WO2005081690A2 - Closure for rod receiving orthopedic implant having left handed thread removal - Google Patents
Closure for rod receiving orthopedic implant having left handed thread removal Download PDFInfo
- Publication number
- WO2005081690A2 WO2005081690A2 PCT/US2004/031934 US2004031934W WO2005081690A2 WO 2005081690 A2 WO2005081690 A2 WO 2005081690A2 US 2004031934 W US2004031934 W US 2004031934W WO 2005081690 A2 WO2005081690 A2 WO 2005081690A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- closure
- advancement
- splay
- bone
- structural member
- Prior art date
Links
- 239000007943 implant Substances 0.000 title claims abstract description 58
- 230000000399 orthopedic effect Effects 0.000 title description 4
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 79
- 230000013011 mating Effects 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 35
- 230000000295 complement effect Effects 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 4
- 238000002513 implantation Methods 0.000 claims description 2
- 239000011324 bead Substances 0.000 description 13
- 208000027418 Wounds and injury Diseases 0.000 description 11
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7091—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for applying, tightening or removing longitudinal element-to-bone anchor locking elements, e.g. caps, set screws, nuts or wedges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
- F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
- F16B35/047—Specially-shaped ends for preventing cross-threading, i.e. preventing skewing of bolt and nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
- F16B2033/025—Shape of thread; Special thread-forms with left-hand thread
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
Definitions
- the present invention is directed to a closure for operably securing a rod to an orthopedic implant
- said closure includes a break off head, a left hand threaded axially aligned bore for use in removal of the closure from the implant and a structure for use in interlocking together the closure and the implant.
- the interlocking structure includes a first interlocking form on the closure and a mating second interlocking form on the implant .
- the closure is operably rotated into the implant and against the rod for securing the rod in the implant .
- the first and second interlocking forms are both helically wound so that the first interlocking form advances relative to the second interlocking form and toward the rod, when the closure with the first interlocking form is inserted in the implant and rotated.
- At least one of the first or second interlocking forms includes a projection that overlaps and radially locks with the other interlocking form, when the two forms are mated.
- Medical implants present a number of problems to both surgeons installing the implants and to engineers designing them. It is always desirable to have an implant that is strong and unlikely to fail or break during usage. It is also desirable for the implant to be as small and lightweight as possible so that it is less intrusive on the patient. These are normally conflicting goals and often difficult to resolve.
- One particular type of implant presents special problems. In particular, spinal bone screws, hooks, etc. are used in many types of back surgery for repair of injury, disease or congenital defect.
- spinal bone screws of this type are designed to have one end that inserts threadably into a vertebra and a head at an opposite end thereof.
- the head is designed to receive a rod or rodlike member in a channel in the head.
- the rod is then both captured in the channel and locked in the head to prevent relative movement between the various elements subsequent to installation.
- There are two different major types of bone screws and similar devices which are classified as closed headed and open headed. While the closed headed devices are highly effective at capturing and securing a rod, it is very difficult during surgery to insert the rod through the heads, since the rod must be introduced through an opening in the head. This is because there are many bone screw heads used and the rod is often curved or the heads do not align.
- the second type of head is an open head wherein a channel is formed in the head and the rod is simply laid in an open channel. The channel is then closed with a closure member.
- the open headed bone screws and related devices are much easier to use and in some situations must be used instead of the closed headed devices . While the open headed devices are often necessary and often preferred for usage, there is a significant problem associated with them.
- the open headed devices conventionally have two upstanding arms that are on opposite sides of a channel that receives the rod member. The top of the channel is closed by a closure member after the rod member is placed in the channel .
- the closure can be of a slide in type, but such are not easy to use. Threaded nuts are sometimes used that go around the outside of the arms . Such nuts prevent splaying of the arms, but nuts substantially increase the size and profile of the implant which is not desirable. Many open headed implants are closed by plugs that screw into threads between the arms, because such have a low profile.
- threaded plugs have encountered problems also in that they especially produce forces that ' are radially outward directed and that lead to splaying or spreading of the arms or at least do not prevent splaying due to other causes that in turn loosens or completely releases the rod relative to the implant.
- a significant force must be exerted on the relatively small plug or screw. The forces are required to provide enough torque to insure that the rod member is clamped or locked in place relative to the bone screw, so that the rod does not move axially or rotationally therein. This typically requires torques on the order of 100 inch-pounds.
- the rod is preferably compressed and set by the plug by advancement of the plug into the channel in order to assure that the plug will securely hold the rod and that the rod and plug will not loosen when post assembly forces are placed on the rod. Because it takes substantial force to seat the rod, it is difficult to both place the plug fully in the channel and rotate the plug for locking while also trying to line up wedges on the plug with the mating structure. It is much easier to align the closure plug or mating structure with the mating structure of the arms at the top of the arms and then rotate the plug so as to advance the plug_ in a plug receiver toward the rod. In this way, the plug starts applying significant force against the rod only after parts of the mating structure have at least partly joined at which time torque can be applied without having to worry about alignment.
- V-threads have leading and trailing sides oriented at angles to the screw axis.
- torque on the plug is translated to the bone screw head at least partially in an axial direction, tending to push or splay the arms of the bone screw head outward in a radial direction.
- This in turn spreads the arms of an internally threaded receptacle away from the thread axis so as to loosen the plug in the receptacle.
- the radial expansion problem of V-threads has been recognized in various types of threaded joints. To overcome this problem, so-called "buttress" threadforms were developed.
- closures of the type described herein to function properly are "set” or torqued to a preferred torque, often 95 to 100 inch pounds.
- the operating region where the implants are installed is within the body and the parts are relatively very small. Consequently, the closures of the present invention preferably can be readily gripped and torqued.
- a driving or installation head is designed to break away at a preselected torque . After the closure is installed, it is sometimes necessary to remove the closure. For purposes of removal, the driving head, is no longer available, so structure is required to allow quick easy removal and which cooperates effectively with the guide and advancement structure utilized with the closure.
- a non threaded guide and advancement structure is provided for securing a plug or closure in a receiver in an orthopedic implant.
- the receiver is a rod receiving channel in an open headed bone screw, hook or other medical implant wherein the channel has an open top and is located between two spaced arms of the implant .
- the guide and advancement structure has a first part or interlocking form located on the closure and a second part or interlocking form that is located on the interior of the receiving channel. The interlocking forms lock and resist sidewise or radial movement of load bearing leading or trailing surfaces rather than simply interfere with movement due to placement .
- Both parts of the guide and advancement structure are spirally or more preferably helically wound and extend about the closure and receiving channel for at least one complete 360° pass or turn.
- both parts include multiple turns such as 2 to 4 complete 360° rotations about the helixes formed by the parts.
- the helixes formed by the parts are coaxial with the closure when the closure is fully received in or being rotated into the receiving channel between the arms .
- One major distinguishing feature of the guide and advancement structure is that each of the parts include elements that mechanically interlock with the opposite part or mating piece as the closure is rotated and thereby advanced into the receiving channel toward the bottom of the channel and into engagement with a rod received in the channel .
- Each part of the guide and advancement structure preferably has a generally constant and uniform cross section, when viewed in any cross sectional plane fully passing through the axis of rotation of the closure during insertion, with such uniform cross section preferably extending along substantially the entire length of the interlocking form.
- Opposite ends of each interlocking form are feathered or the like so the cross section does change some at such locations, while retaining part of the overall shape.
- the outer surfaces of each interlocking form remain sufficiently uniform to allow interlocking forms to be rotated together and slide tangentially with respect to each other through one or more complete turns of the closure relative to the receiving channel.
- Each part may be continuous from near a bottom of the closure or receiving channel to the top thereof respectively " .
- one or both parts may be partly discontinuous, while retaining an overall helical configuration with a generally uniform cross sectional shape.
- each of the sections has a substantially uniform cross section along substantially the entire length thereof.
- the parts of the structure include helical wound projections or interlocking forms that extend radially outward from the closure and radially inward from the receiving channel.
- the interlocking forms may be of many different shapes when viewed in crossection with respect to a plane passing through the axis of rotation of the plug during insertion.
- the interlocking forms increase in axial aligned width or have a depression at a location spaced radially outward from where the interlocking form attaches to a respective closure or receiving channel, either upward (that is, parallel to the axis of rotation of the closure in the direction from which the closure comes or initially starts) or downward or in both directions .
- the opposite interlocking form has a second mating element with a gripping or overlapping portion that generally surrounds or passes around at least part of the first mating element in such a way that the two are radially or sideways mechanically locked together when the closure is advanced into the receiving channel . Therefore, in accordance with the invention a mating and advancement structure is provided for joining two devices, that are preferably medical implants and especially are an open headed implant that includes a rod receiving channel and a closure for closing the receiving channel after the rod is received therein.
- the mating and advancement structure includes a pair of mateable and helical wound interlocking forms with a first interlocking form located on an outer surface of the closure and a second interlocking form located on an inner surface of the receiving channel, or receiver.
- the first and second interlocking forms are startable so as to mate and thereafter rotatable relative to each other about a common axis so as to provide for advancement of the closure into the receiver during assembly when the closure interlocking form is rotated into the receiver interlocking form.
- the first and second interlocking forms have a .helical wound projection that extends radially from the closure and the receiver respectively.
- Each interlocking form projection has a base that is attached to the closure or receiver respectively and preferably includes multiple turns that may each be continuous or partially discontinuous with constant or uniform cross-sectional shape.
- the interlocking forms have substantial axial width near an outer end thereof that prevents or resists misalignment of the interlocking form during initial engagement and rotation thereof.
- each turn of each projection generally snugly engages turns of the other projection on either side thereof.
- the opposite or mating interlocking form has elements that wrap around or into such extensions or depressions of the other interlocking form. That is, the forms axially interdigitate with each other and block radial outward movement or expansion. In this way and in combination with the interlocking forms preferably being snug or close relative to each other with sufficient clearance to allow rotation, the interlocking forms, once assembled or mated lock to prevent radial or sideways slipping or sliding relative to each other, even if forces are applied that would otherwise bend the base of one or both relative to the device upon which it is mounted.
- the present invention provides such an interlocking form for use in a medical implant closure which resists splaying tendencies of arms of a receiver.
- the interlocking form of the present invention preferably provides a compound or "non-linear" surface on a trailing face, thrust face or flank of the interlocking form, although the "non-linear" surface may also be placed on the leading face.
- the interlocking form located on the closure is helically wound about a cylindrical outer surface of the closure and has an inner root, and an outer crest that remain constant over substantially the entire length of the interlocking form.
- the receiver has a mating or similar shaped interlocking form wound about the interior thereof.
- the interlocking form has leading or clearance surfaces and trailing or thrust surfaces, referenced to the direction of axial movement of the form when rotated into one another.
- the structure also includes an internal helical wound interlocking form located on an internal surface, of ' a receiver member and has an outer root ' and. an inner crest.
- the internal interlocking form has thrust surfaces which are oriented in such a direction so as to be engaged by the thrust surfaces of the external interlocking form of a member engaged therewith.
- the thrust surfaces are "nonlinear" or. compound. That is, the thrust surfaces have a non-linear appearance when represented in cross section.
- the purpose for the non-linear or compound surface is to provide a portion of the thrust surface which is oriented in such a direction so as to resist a tendency of the receiver to expand or splay when tightening torque is applied to rotate the interlocking forms into a mating relationship or when other forces are encountered.
- the non-linear or compound surfaces of the interlocking forms whether on tracking surfaces, leading surfaces or both interlock and resist splaying tendencies of the., arms of the head.
- the objective of the interlocking form is not necessarily to generate a radially inwardly directed force on the receptacle in tightening the fastener (although this may occur in some embodiments) , but importantly to resist outward forces generated by engagement of the closure with the closure receptacle or by other forces applied to the components joined by the closure and closure receptacle and prevent splaying.
- the present invention requires that only a portion of the thrust surfaces of a closure be so configured as to face toward the closure axis and only a portion of thrust surfaces of a closure receptacle. face away from the axis.
- an axial extension or depression is located on the thrust or trailing surface, or alternatively for such to be located on the opposite or leading surface or both.
- a section of the interlocking form at the crest, that is located radially outward of the root is enlarged in cross sectional area to create a gripping, locking or stopping surface that resists slippage or sliding in a radial direction relative to an opposed interlocking form.
- a section of the interlocking form between the root and the crest which is radially spaced from the root is enlarged in cross sectional area to create a gripping, locking or stopping surface that engages a like surface of the opposite interlocking form.
- the enlarged sections of the inner and outer interlocking forms are created by cutting, molding, machining or the, like grooves or channels or the like into a radially inward portion of the thrust surface of the external interlocking form and mating grooves or channels into a radially outward portion of the thrust surface of the internal interlocking form.
- Such grooves or channels may be formed by specially shaped taps and dies, cutting elements or by other suitable manufacturing processe.s and technologies, including molding.
- the interlocking forms of the present invention may be implemented in a variety of configurations of non-linear, compound, or complex trailing and/or leading surfaces.
- the nomenclature used to describe variations in the interlocking forms of the present invention is especially referenced to the external interlocking forms located on a closure, with complementary, mating or similar shapes applied to the internal interlocking forms on a receiver.
- a somewhat squared gripping shoulder is formed near an outer periphery of the external interlocking forms and an inner gripping surface on the internal interlocking forms .
- the axial shoulder interlocking form results in complementary cylindrical surfaces on the external and internal interlocking forms which mutually engage 'when the fastener or closure is rotated into a closure receptacle.
- the external interlocking form is provided with a rounded peripheral bead or lateral lip which projects in an axial direction along the interlocking form crest and a complementary rounded concave channel in the internal interlocking ' form. The reverse occurs with the internal interlocking form.
- Other alternative forms include a radial bead interlocking form wherein a rounded bead enlargement is formed on the radially outward periphery at the crest of the external interlocking form, while the internal interlocking form is formed in a complementary manner to receive the radial bead interlocking form.
- a scalloped or scooped interlocking form which is, in effect, a reciprocal of the axial bead interlocking form and has a rounded channel or groove located along the thrust surface of the external interlocking form with a complementary rounded convex bead shape associated with the internal interlocking form.
- a variation of the axial bead interlocking form is a medial bead embodiment .
- a bead projects from a base thrust surface of an external interlocking form in an axial direction at a location medially between, the root and crest of the interlocking form.
- an axial groove is formed in a base thrust surface between the root and crest .
- an axial groove is formed in a base thrust surface of the external interlocking form medially between the root and crest, while ' the internal interlocking form, has an axial bead located medially between the root and crest .
- interlocking forms are envisioned with respect to relative extensions or enlargements and depressions or depth of grooves of the various interlocking forms.
- the opposite interlocking forms have the same but reversed and inverted cross section, whereas in others the cross section of the paired interlocking forms mates but is different. It is noted that many other configurations of interlocking forms with non-linear, compound or complex thrust surfaces are envisioned, which would be encompassed by the present invention.
- the interlocking forms of the present invention find particularly advantageous application in various types of bone implant devices.
- the interlocking forms also have advantages in reducing misalignment problems of cross- interlocking and isinterlocking of interlocking forms when the opposed interlocking forms are joined and rotated which is commonly encountered in such devices when threads of various types are used.
- a breakoff head is provided for rotating and driving the closure along the axis of the receiver. .
- the breakoff head is axially secured to the closure and breaks from the remainder of the closure after the closure is set against a rod and a predetermined torque is obtained, for example 100 inch pounds .
- Axially penetrating the closure from the top thereof and being fully exposed by the breakoff head being broken therefrom is a bore.
- the bore may be fully penetrating or partially penetrating from top to bottom of the closure.
- the bore has an interior left handed thread that is sized and shaped to receive a like threaded tool that can be rotated counterclockwise after insertion to also rotate the closure body counterclockwise to remove the body should removal be required after installation.
- pbjects of the present invention include providing an improved closure plug or closure top for use with an open headed bone screw; providing such a closure having a cylindrical base and a driving or installation head that breaks away from the base at a breakaway region to provide a low or minimized profile subsequent to installation ' of the closure; providing such a closure having removal structure enabling positive, non-slip engagement of the closure by a removal tool which securely grips and holds the closure; providing such a closure having an axially extending bore that passes through the installation head and at least into the closure; providing such a closure in which the bore has an internal left handed thread that is sized and shaped to receive a removal tool with a matingly threaded projection; providing such a closure in combination with an open headed bone implant screw for use in anchoring a bone fixation structural member, such as a rod; providing such a closure combination in which the open headed bone screw includes a pair of spaced apart arms forming a rod receiving channel; providing such a closure combination including an external guide and advancement flange on the closure
- Fig. 1 is an enlarged perspective view of an anti-splay closure with a break off driving head in accordance with the present invention.
- Fig. 2 is a side elevational view of the closure at a further enlarged scale.
- Fig. 3 is a top plan view of the closure.
- Fig. 4 is a bottom plan view of the closure that illustrates a V-ring and point on the bottom of the closure.
- Fig. 5 is a cross sectional view of the closure, taken on line 5-5 of Fig. 3 and illustrates internal details of the break off head and an internal threaded bore.
- Fig. 6 is a fragmentary side elevational view at a reduced scale of the closure in combination with an open headed bone screw implant, prior to separation of the break off head.
- Fig. 1 is an enlarged perspective view of an anti-splay closure with a break off driving head in accordance with the present invention.
- Fig. 2 is a side elevational view of the closure at a further enlarged scale.
- FIG. 7 is a view similar to Fig. 6 and illustrates separation of the break off head of the closure due to exceeding a preselected torque thereon.
- Fig. 8 is an enlarged top plan view of the closure within the open headed bone screw subsequent to breaking away of the break ' off head.
- Fig. 9 is an enlarged cross sectional view of the closure of the present invention, taken along the line 5-5 of Fig. 3 but subsequent to installation in the bone screw and illustrates details of anti-splay structure of the closure and bone screw head, further illustrating a removal tool inserted in the bore for effecting removal of the closure from the bone screw.
- the reference numeral 1 generally designates an anti -splay closure with a partial axial bore 2.
- the closure 1 generally includes a closure plug or body 4 and a breakaway head 6 for installation.
- the closure 4 is used in cooperation with an open headed bone implant screw 8 (Figs.
- the bone screw 8 includes a threaded shank 14 for threadably implanting the screw 8 into the bone 12 and an open head 16 having a pair of upwardly extending and spaced apart arms 18 defining a U-shaped channel 20 therebetween to receive the rod 10. Inner surfaces of the arms 18 have an internal guide and advancement structure 22 (Fig. 9) tapped, or otherwise formed, therein.
- the head 16 includes grip indentations 23 (Fig. 9) to facilitate gripping the bone screw 8 by an appropriate screw gripping tool (not shown) during manipulation for implantation of the bone screw 8 into the bone 12.
- the closure body 4 is cylindrical in external shape about a closure axis 25 (Fig. 7) and has a forward, leading, or inner end 27 on the bottom and a rear, trailing, or outer end 28 on the top.
- the breakaway or breakoff head 6 is connected to the body 4 at the rear end 28 by way of a weakened region represented by a breakaway line or ring 30 formed by selectively reducing the wall thickness of the closure 1 in that region so as to weaken the region.
- the breakaway ring 30 is thinned in such a manner that it fails when a preselected torque is applied to the body 4, as a result of torque being applied to the head 6 by conventional socket tools ' or the like to rotate and tighten the body 4 within the bone screw 8.
- the break off head 6 has a hexagonal outer surface 31 to facilitate non-slip engagement by an installation tool (not shown) .
- the head 6 may also be provided with a set of tool slots 32 for alternative or more positive non-slip engagement of the head 6 by the installation tool.
- the head 6 has a central and axially aligned bore 34 that is coaxial with the removal bore 2 and that defines the break off point of the head 6 in conjunction with the ring 30 and ends in a chamfer 33. Separation of the head 6 from the body 4, as shown in Fig. 7, is desirable to control or limit torque applied by the body 4 to the rod 10 within the bone screw head 16, preferably such that the body 4 is at or below the tops of the arms 18 so as to present a low profile.
- the body 4 is provided with a guide and advancement flange 35 which coaxially extends helically about the cylindrical body, 4 V
- the flange 35 is enlarged at its outer periphery or radial crest to form a generally inwardly facing or inward anti-splay surface 37.
- the bone screw guide and advancement structures 22 which are discontinuous but which matingly engage and receive the body flange 35 are enlarged at their radially outward peripheries or roots to form generally outwardly facing or outward anti-splay surfaces 39.
- the anti-splay or splay resisting surfaces 37 and 39 face each other and mutually engage when the body 4 is advanced into the bone screw head 16 and particularly when the body 4 is strongly torqued within the head 16 to resist any tendency of the arms 18 to be urged outwardly, or splayed, in reaction to such torque .
- particular contours of the flange 35 and mating structure 22 are shown herein, other contours of anti-splay guide and advancement flanges and mating structure are foreseen. Examples of such alternative configurations of anti-splay or splay resisting guide and advancement flange and mating structures are disclosed in U. S. Patent application, Serial No. 10/236,123 which is now U.
- the closure 4 is provided with penetrating structure such as a V-ring 42 and an axially aligned point 43 on the inner or fqrward end 27 thereof.
- the V-ring 42 cuts into the surface of the rod 10 when the body 4 is tightly torqued into the head 16.
- the V- ring 42 extends about a periphery of the inner end 27 of the body 4 and, thus, provides two possible areas of engagement between the body 4 and the rod 10, particularly if the rod 10 is relatively straight and acts with the point 43 to help secure the rod 10 in the bone screw 8.
- the body 4 is torqued into engagement with the rod 10 in the bone screw 8, the installation head 6 is broken away, and the anchor assembly 9 is permanently implanted in the bone 12.
- spinal alignment geometry is complex, and it is sometimes necessary to make adjustments to a spinal fixation system. Additionally, slippage or failure of spinal fixation components can occur due to injury to the patient, deterioration of t bone tissue, or the like.
- implant anchor assemblies require a structure or mechanism for removing an anchor assembly 9 to make such adjustments or changes in the spinal fixation system.
- the anchor assembly 9 of the present invention allows retraction and removal of the closure body 4 from the bone screw head 16 to release the rod 10 to allow repositioning of the rod 10 relative to the bone screw 8 or overall removal of the bone screw 8 and rod 10.
- the body 4 includes the bore 2 which extends from the outer surface 28 axially partially therethrough.
- the bore 2 has an inner cylindrical surface 45 that has a left handed thread 47 thereon.
- the bore surface 45 has a short shoulder 48 whereat it engages the top of the body 4 that becomes part of the outer surface 28 when the head 6 breaks from the body 4.
- the body 4 is removed from the screw 8 by placement of a tool 50 (see Fig. 9) having a projection 51 that is joined to a remainder of the tool 50 by a shoulder 53.
- the projection 51 has thereon a left handed thread 55 that is sized and shaped to mate with the bore thread 47.
- the tool. 50 includes a handle (not shown) or the like to provide for rotation.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/784,066 | 2004-02-20 | ||
US10/784,066 US8257402B2 (en) | 2002-09-06 | 2004-02-20 | Closure for rod receiving orthopedic implant having left handed thread removal |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005081690A2 true WO2005081690A2 (en) | 2005-09-09 |
WO2005081690A3 WO2005081690A3 (en) | 2006-05-18 |
Family
ID=34911414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/031934 WO2005081690A2 (en) | 2004-02-20 | 2004-09-29 | Closure for rod receiving orthopedic implant having left handed thread removal |
Country Status (2)
Country | Link |
---|---|
US (1) | US8257402B2 (en) |
WO (1) | WO2005081690A2 (en) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7717939B2 (en) | 2004-03-31 | 2010-05-18 | Depuy Spine, Inc. | Rod attachment for head to head cross connector |
US7717938B2 (en) | 2004-08-27 | 2010-05-18 | Depuy Spine, Inc. | Dual rod cross connectors and inserter tools |
US8444681B2 (en) | 2009-06-15 | 2013-05-21 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert |
US9980753B2 (en) * | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
US8273088B2 (en) * | 2005-07-08 | 2012-09-25 | Depuy Spine, Inc. | Bone removal tool |
US8628582B2 (en) * | 2005-08-22 | 2014-01-14 | Vilex In Tennessee, Inc. | Subtalar implant and methods of use thereof |
US20070255284A1 (en) * | 2006-04-28 | 2007-11-01 | Sdgi Holdings, Inc. | Orthopedic implant apparatus |
US8361117B2 (en) * | 2006-11-08 | 2013-01-29 | Depuy Spine, Inc. | Spinal cross connectors |
US8317843B2 (en) * | 2007-07-11 | 2012-11-27 | Perumala Corporation | Multi-axis connection and methods for internal spinal stabilizers |
EP2135574B1 (en) * | 2008-06-19 | 2011-10-12 | BIEDERMANN MOTECH GmbH | Bone anchoring assembly |
EP2442739A1 (en) * | 2008-08-01 | 2012-04-25 | Jackson, Roger P. | Longitudinal connecting member with sleeved tensioned cords |
US11464549B2 (en) | 2009-06-15 | 2022-10-11 | Roger P. Jackson | Pivotal bone anchor assembly with horizontal tool engagement grooves and insert with upright arms having flared outer portions |
CN103917181A (en) | 2009-06-15 | 2014-07-09 | 罗杰.P.杰克逊 | Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock |
WO2013043218A1 (en) | 2009-06-15 | 2013-03-28 | Jackson Roger P | Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet |
CA2774471A1 (en) | 2009-10-05 | 2011-04-14 | James L. Surber | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
US20110218574A1 (en) * | 2010-03-03 | 2011-09-08 | Warsaw Orthopedic, Inc. | Dynamic vertebral construct |
DE112011104028A1 (en) | 2010-11-02 | 2013-12-12 | Roger P. Jackson | Polyaxial bone anchor with quick-release shaft and rotatable holder |
BR112013019837B1 (en) * | 2011-02-04 | 2020-12-01 | Spinesave Ag | bone screw and fixing element |
US8956361B2 (en) | 2011-12-19 | 2015-02-17 | Amendia, Inc. | Extended tab bone screw system |
US8911478B2 (en) * | 2012-11-21 | 2014-12-16 | Roger P. Jackson | Splay control closure for open bone anchor |
US9486256B1 (en) | 2013-03-15 | 2016-11-08 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
US9717533B2 (en) * | 2013-12-12 | 2017-08-01 | Roger P. Jackson | Bone anchor closure pivot-splay control flange form guide and advancement structure |
US10543021B2 (en) | 2014-10-21 | 2020-01-28 | Roger P. Jackson | Pivotal bone anchor assembly having an open ring positioner for a retainer |
DE102016113495A1 (en) | 2016-07-21 | 2018-01-25 | Aesculap Ag | Pedicle screw system with a locking screw with threaded section |
US11648037B2 (en) | 2017-05-03 | 2023-05-16 | Advance Research System, Llc | Extension-ready spinal support system with vascular-safe pedicle screw |
US10646260B2 (en) | 2017-05-03 | 2020-05-12 | Advance Research System, Llc | Extension ready spinal support systems |
US11051861B2 (en) | 2018-06-13 | 2021-07-06 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
WO2020102787A1 (en) | 2018-11-16 | 2020-05-22 | Surber, James L. | Pivotal bone anchor assembly having a deployable collet insert with internal pressure ring |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6004349A (en) * | 1997-01-06 | 1999-12-21 | Jackson; Roger P. | Set screw for use with osteosynthesis apparatus |
US6063090A (en) * | 1996-12-12 | 2000-05-16 | Synthes (U.S.A.) | Device for connecting a longitudinal support to a pedicle screw |
US6296642B1 (en) * | 1998-11-09 | 2001-10-02 | Sdgi Holdings, Inc. | Reverse angle thread for preventing splaying in medical devices |
Family Cites Families (369)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE373809C (en) | 1923-04-16 | Willy Seck | Fuel sucker | |
US791548A (en) | 1903-05-23 | 1905-06-06 | Hollow Screw Company | Set-screw. |
US1300275A (en) | 1914-09-03 | 1919-04-15 | Johnson Service Co | Screw-threaded fastening. |
US1330673A (en) | 1919-07-16 | 1920-02-10 | Anderson Ross | Drift for staybolt-sleeves |
GB203508A (en) | 1922-08-24 | 1923-09-13 | Thomas Turner Hindle | Improvements in and relating to set screws for securing wheels, bosses, collars, and the like, upon shafts and the like |
US2083092A (en) | 1936-01-20 | 1937-06-08 | Joseph R Richer | Screw |
BE434038A (en) | 1938-04-28 | |||
US2239352A (en) | 1939-02-23 | 1941-04-22 | Economy Screw Corp | Setscrew and method of producing same |
US2295314A (en) | 1940-05-04 | 1942-09-08 | Ernest C Whitney | Setscrew |
US2445978A (en) | 1945-05-07 | 1948-07-27 | Domnic V Stellin | Socket head screw |
US2537029A (en) | 1946-08-06 | 1951-01-09 | Phillips Screw Co | Method for manufacturing screw drivers |
US2532815A (en) | 1947-08-29 | 1950-12-05 | Hagerstown Engineering Company | Special lock screw |
US2553337A (en) | 1948-09-21 | 1951-05-15 | Julius E Shafer | Bearing assembly |
US2778265A (en) | 1953-06-15 | 1957-01-22 | Set Screw & Mfg Company | Solid cup-point set screw |
US2877681A (en) | 1954-04-16 | 1959-03-17 | Set Screw & Mfg Company | Screw having deformable temporary head disposed in a groove |
US2927332A (en) | 1957-11-12 | 1960-03-08 | Moore Harrington | Method of making a setscrew |
US2969250A (en) | 1959-01-05 | 1961-01-24 | Standard Pressed Steel Co | Socket drive |
US3143029A (en) | 1960-03-28 | 1964-08-04 | Set Screw & Mfg Company | Set screw with center of gravity located to permit orientation |
US3370341A (en) | 1965-12-20 | 1968-02-27 | G K N Serews & Fasteners Ltd | Method of and apparatus for use in tightening a nut and bolt assembly |
US3584667A (en) | 1966-09-19 | 1971-06-15 | Textron Inc | Coupling arrangement and tools for same |
US3498174A (en) | 1968-11-19 | 1970-03-03 | Hi Shear Corp | Inherently torque-limited bolt having removal means |
US3812757A (en) | 1969-11-04 | 1974-05-28 | Textron Inc | Threaded fastener with torque control head |
US3640416A (en) | 1970-10-16 | 1972-02-08 | John J Temple | Reverse angle thread system for containers |
SU371359A1 (en) | 1971-06-15 | 1973-02-22 | В. И. Соколовский, В. П. Банков , В. С. Паршин Уральский политехнический институт С. М. Кирова | SCREW PAIR |
US3963322A (en) | 1975-01-23 | 1976-06-15 | Ite Imperial Corporation | Torque controlling set screw for use with the cable of solderless connectors, or the like |
US4103422A (en) | 1975-03-07 | 1978-08-01 | Oratronics, Inc. | Threaded self-tapping endodontic stabilizer |
US4373754A (en) | 1978-08-09 | 1983-02-15 | Hydril Company | Threaded connector |
US4269246A (en) | 1979-05-10 | 1981-05-26 | Textron Inc. | Fastener and driver assembly |
FR2467312A1 (en) | 1979-10-08 | 1981-04-17 | Boulay Ste Indle | Lock nut for screw - has double, internal, hexagonal key drive hole to facilitate complete dismantling |
GB2082709A (en) | 1980-08-23 | 1982-03-10 | Robinson Derek Hugh | Disc nut and disc-headed bolt |
US4577448A (en) | 1981-06-17 | 1986-03-25 | The British Picker Company, Ltd. | Floors |
US4506917A (en) | 1982-07-22 | 1985-03-26 | Interfit, Inc. | Pipe connection fitting |
FR2545350B1 (en) | 1983-05-04 | 1985-08-23 | Cotrel Yves | DEVICE FOR SHRINKAGE OF THE RACHIS |
GB2140523A (en) | 1983-05-17 | 1984-11-28 | Hepworth Electrical Developmen | Shear head screws or bolts, or shear head adapter |
US4600224A (en) | 1983-12-23 | 1986-07-15 | Interlock Technologies Corporation | Tubular connection having a chevron wedge thread |
GB2173104B (en) | 1984-02-28 | 1987-11-25 | Peter John Webb | Spinal fixation apparatus |
US4703954A (en) | 1985-11-08 | 1987-11-03 | Hydril Company | Threaded pipe connection having wedge threads |
DE3614101C1 (en) | 1986-04-25 | 1987-10-22 | Juergen Prof Dr Med Harms | Pedicle screw |
US4707001A (en) | 1986-06-20 | 1987-11-17 | Seal-Tech, Inc. | Liner connection |
US5427418A (en) | 1986-07-18 | 1995-06-27 | Watts; John D. | High strength, low torque threaded tubular connection |
DE3630863A1 (en) | 1986-09-08 | 1988-03-17 | Mecron Med Prod Gmbh | Bone screw |
US4805602A (en) | 1986-11-03 | 1989-02-21 | Danninger Medical Technology | Transpedicular screw and rod system |
DE3701765C1 (en) | 1987-01-22 | 1988-06-09 | Ethicon Gmbh | Bone screw |
US4764068A (en) | 1987-03-06 | 1988-08-16 | Sps Technologies, Inc. | Knurled cup-point set screw |
US4790297A (en) | 1987-07-24 | 1988-12-13 | Biotechnology, Inc. | Spinal fixation method and system |
US4838264A (en) | 1987-08-18 | 1989-06-13 | Bremer Orthopedics, Inc. | Torque limiting device for use with bone penetrating pins |
US4850775A (en) | 1988-04-26 | 1989-07-25 | Lee Jae B | Screw-type fastening device |
FR2633177B1 (en) | 1988-06-24 | 1991-03-08 | Fabrication Materiel Orthopedi | IMPLANT FOR A SPINAL OSTEOSYNTHESIS DEVICE, ESPECIALLY IN TRAUMATOLOGY |
US4961740B1 (en) | 1988-10-17 | 1997-01-14 | Surgical Dynamics Inc | V-thread fusion cage and method of fusing a bone joint |
NO900391L (en) | 1989-02-06 | 1990-08-07 | Weidmann H Ag | PROCEDURE, ANCHORING ELEMENT AND TENSION FOR TENSIONING OF A BAR. |
FR2642643B1 (en) | 1989-02-09 | 1991-05-10 | Vignaud Jean Louis | SPINAL INSTRUMENTATION FOR UNIVERSAL PEDICULAR FIXATION WITH MICROMETRIC ADJUSTMENT DIAPASON SCREW |
FR2645732B1 (en) | 1989-04-13 | 1997-01-03 | Cotrel Yves | VERTEBRAL IMPLANT FOR OSTEOSYNTHESIS DEVICE |
DE3923996A1 (en) | 1989-07-20 | 1991-01-31 | Lutz Biedermann | RECORDING PART FOR JOINTLY CONNECTING TO A SCREW FOR MAKING A PEDICLE SCREW |
FR2658413B1 (en) | 1990-02-19 | 1997-01-03 | Sofamor | OSTEOSYNTHESIS DEVICE FOR THE CORRECTION OF SPINAL DEVIATIONS. |
FR2658414B1 (en) | 1990-02-19 | 1992-07-31 | Sofamor | IMPLANT FOR OSTEOSYNTHESIS DEVICE IN PARTICULAR OF THE RACHIS. |
FR2659225B1 (en) | 1990-03-08 | 1995-09-08 | Sofamor | TRANSVERSE FIXING DEVICE FOR PROVIDING A RIGID CROSS-LINK BETWEEN TWO RODS OF A SPINAL OSTEOSYNTHESIS SYSTEM. |
GB9007519D0 (en) | 1990-04-03 | 1990-05-30 | Trisport Ltd | Studded footwear |
US5360431A (en) | 1990-04-26 | 1994-11-01 | Cross Medical Products | Transpedicular screw system and method of use |
US5092635A (en) | 1990-04-27 | 1992-03-03 | Baker Hughes Incorporated | Buttress thread form |
GB9014817D0 (en) | 1990-07-04 | 1990-08-22 | Mehdian Seyed M H | Improvements in or relating to apparatus for use in the treatment of spinal disorders |
US5129900B1 (en) | 1990-07-24 | 1998-12-29 | Acromed Corp | Spinal column retaining method and apparatus |
US5073074A (en) | 1990-07-26 | 1991-12-17 | Sps Technologies, Inc. | Set screw |
CH681853A5 (en) | 1990-08-21 | 1993-06-15 | Synthes Ag | |
US5176483A (en) | 1991-01-21 | 1993-01-05 | Inq. Walter Hengst Gmbh & Co. | Detachment lock for a bolt connection |
FR2676354B1 (en) | 1991-05-17 | 1997-11-07 | Vignaud Jean Louis | LOCKABLE CONNECTION DEVICE OF SPINAL OSTEOSYNTHESIS ANCHORING ELEMENTS. |
MX9204122A (en) | 1991-07-15 | 1993-04-01 | Danek Group Inc | SPINAL FIXATION SYSTEM. |
FR2680461B1 (en) | 1991-08-19 | 1993-11-26 | Fabrication Mat Orthopedique | IMPLANT FOR OSTEOSYNTHESIS DEVICE, ESPECIALLY OF THE RACHIS, AND CORRESPONDING DEVICE FOR ITS PLACEMENT. |
US5275601A (en) | 1991-09-03 | 1994-01-04 | Synthes (U.S.A) | Self-locking resorbable screws and plates for internal fixation of bone fractures and tendon-to-bone attachment |
US5257993A (en) | 1991-10-04 | 1993-11-02 | Acromed Corporation | Top-entry rod retainer |
US5713896A (en) * | 1991-11-01 | 1998-02-03 | Medical Scientific, Inc. | Impedance feedback electrosurgical system |
AU672596B2 (en) | 1992-02-14 | 1996-10-10 | Smith & Nephew, Inc. | Polymeric screws and coatings for surgical uses |
DE9202745U1 (en) | 1992-03-02 | 1992-04-30 | Howmedica Gmbh, 2314 Schoenkirchen, De | |
US5358289A (en) | 1992-03-13 | 1994-10-25 | Nkk Corporation | Buttress-threaded tubular connection |
US5281222A (en) | 1992-06-30 | 1994-01-25 | Zimmer, Inc. | Spinal implant system |
US5545165A (en) | 1992-10-09 | 1996-08-13 | Biedermann Motech Gmbh | Anchoring member |
US5382248A (en) | 1992-09-10 | 1995-01-17 | H. D. Medical, Inc. | System and method for stabilizing bone segments |
US5334203A (en) | 1992-09-30 | 1994-08-02 | Amei Technologies Inc. | Spinal fixation system and methods |
FR2697992B1 (en) | 1992-11-18 | 1994-12-30 | Eurosurgical | Device for attaching to a rod of an organ, in particular for spinal orthopedic instrumentation. |
US5354299A (en) | 1992-12-07 | 1994-10-11 | Linvatec Corporation | Method of revising a screw in a tunnel |
US5387212A (en) | 1993-01-26 | 1995-02-07 | Yuan; Hansen A. | Vertebral locking and retrieving system with central locking rod |
US5282707A (en) | 1993-02-22 | 1994-02-01 | Detroit Tool Industries Corporation | Fastening system for locking nut with torque indicating marks |
DE9302700U1 (en) | 1993-02-25 | 1993-04-08 | Howmedica Gmbh, 2314 Schoenkirchen, De | |
DE4307576C1 (en) | 1993-03-10 | 1994-04-21 | Biedermann Motech Gmbh | Bone screw esp. for spinal column correction - has U=shaped holder section for receiving straight or bent rod |
FR2704133B1 (en) | 1993-04-19 | 1995-07-13 | Stryker Corp | Implant for osteosynthesis device in particular of the spine. |
FR2705226B1 (en) | 1993-05-17 | 1995-07-07 | Tornier Sa | Spine fixator to maintain a spine. |
ATE148328T1 (en) | 1993-05-18 | 1997-02-15 | Schaefer Micomed Gmbh | BONE SURGICAL HOLDING DEVICE |
DE4316542C1 (en) | 1993-05-18 | 1994-07-21 | Schaefer Micomed Gmbh | Osteosynthesis device |
US6077262A (en) | 1993-06-04 | 2000-06-20 | Synthes (U.S.A.) | Posterior spinal implant |
US5379505A (en) | 1993-06-16 | 1995-01-10 | Lock-N-Stitch International | Method for repairing cracks |
AU693498B2 (en) | 1993-11-19 | 1998-07-02 | Cross Medical Products, Inc. | Rod anchor seat having sliding closure member |
US5466237A (en) | 1993-11-19 | 1995-11-14 | Cross Medical Products, Inc. | Variable locking stabilizer anchor seat and screw |
DE4339804A1 (en) | 1993-11-23 | 1995-06-01 | Haerle Anton | Power transmission link for osteosynthesis work |
DE9402839U1 (en) | 1994-02-22 | 1994-04-14 | Howmedica Gmbh | Device for setting up a spine with damaged vertebrae |
US5507747A (en) | 1994-03-09 | 1996-04-16 | Yuan; Hansen A. | Vertebral fixation device |
ATE189589T1 (en) | 1994-03-10 | 2000-02-15 | Schaefer Micomed Gmbh | OSTEOSYNTHESIS DEVICE |
US5662652A (en) | 1994-04-28 | 1997-09-02 | Schafer Micomed Gmbh | Bone surgery holding apparatus |
DE4425391C2 (en) | 1994-04-28 | 1996-12-19 | Schaefer Micomed Gmbh | Bone surgery holding device |
US5641256A (en) | 1994-06-09 | 1997-06-24 | Npc, Inc. | Anchoring device for a threaded member |
US5961517A (en) | 1994-07-18 | 1999-10-05 | Biedermann; Lutz | Anchoring member and adjustment tool therefor |
DE4425357C2 (en) | 1994-07-18 | 1996-07-04 | Harms Juergen | Anchoring element |
DE9413471U1 (en) | 1994-08-20 | 1995-12-21 | Schaefer Micomed Gmbh | Ventral intervertebral implant |
US5601553A (en) | 1994-10-03 | 1997-02-11 | Synthes (U.S.A.) | Locking plate and bone screw |
US5474551A (en) | 1994-11-18 | 1995-12-12 | Smith & Nephew Richards, Inc. | Universal coupler for spinal fixation |
FR2729291B1 (en) | 1995-01-12 | 1997-09-19 | Euros Sa | RACHIDIAN IMPLANT |
US5620443A (en) | 1995-01-25 | 1997-04-15 | Danek Medical, Inc. | Anterior screw-rod connector |
US5643260A (en) | 1995-02-14 | 1997-07-01 | Smith & Nephew, Inc. | Orthopedic fixation system |
DE19507141B4 (en) | 1995-03-01 | 2004-12-23 | Harms, Jürgen, Prof. Dr.med. | Locking |
DE19509331C2 (en) | 1995-03-15 | 1998-01-15 | Juergen Harms | Element for stabilizing the cervical vertebrae |
DE19509332C1 (en) | 1995-03-15 | 1996-08-14 | Harms Juergen | Anchoring element |
US5591235A (en) | 1995-03-15 | 1997-01-07 | Kuslich; Stephen D. | Spinal fixation device |
US5591166A (en) | 1995-03-27 | 1997-01-07 | Smith & Nephew Richards, Inc. | Multi angle bone bolt |
US6206922B1 (en) | 1995-03-27 | 2001-03-27 | Sdgi Holdings, Inc. | Methods and instruments for interbody fusion |
US5569247A (en) | 1995-03-27 | 1996-10-29 | Smith & Nephew Richards, Inc. | Enhanced variable angle bone bolt |
US6780186B2 (en) | 1995-04-13 | 2004-08-24 | Third Millennium Engineering Llc | Anterior cervical plate having polyaxial locking screws and sliding coupling elements |
US5520690A (en) | 1995-04-13 | 1996-05-28 | Errico; Joseph P. | Anterior spinal polyaxial locking screw plate assembly |
US5882350A (en) | 1995-04-13 | 1999-03-16 | Fastenetix, Llc | Polyaxial pedicle screw having a threaded and tapered compression locking mechanism |
US5669911A (en) | 1995-04-13 | 1997-09-23 | Fastenetix, L.L.C. | Polyaxial pedicle screw |
US5607304A (en) | 1995-04-17 | 1997-03-04 | Crystal Medical Technology, A Division Of Folsom Metal Products, Inc. | Implant connector |
US5683391A (en) | 1995-06-07 | 1997-11-04 | Danek Medical, Inc. | Anterior spinal instrumentation and method for implantation and revision |
US5562663A (en) | 1995-06-07 | 1996-10-08 | Danek Medical, Inc. | Implant interconnection mechanism |
US5584834A (en) | 1995-07-13 | 1996-12-17 | Fastenetix, L.L.C. | Polyaxial locking screw and coupling element assembly for use with side loading rod fixation apparatus |
US5586984A (en) | 1995-07-13 | 1996-12-24 | Fastenetix, L.L.C. | Polyaxial locking screw and coupling element assembly for use with rod fixation apparatus |
US5554157A (en) | 1995-07-13 | 1996-09-10 | Fastenetix, L.L.C. | Rod securing polyaxial locking screw and coupling element assembly |
US6193719B1 (en) | 1995-08-24 | 2001-02-27 | Sofamor S.N.C. | Threaded clamping plug for interconnecting two implants of a spinal osteosynthesis instrumentation or other implants |
US5697929A (en) | 1995-10-18 | 1997-12-16 | Cross Medical Products, Inc. | Self-limiting set screw for use with spinal implant systems |
US5713705A (en) | 1996-03-01 | 1998-02-03 | Gruenbichler; Carl | Fastener bolt with limited torque head |
US6679833B2 (en) | 1996-03-22 | 2004-01-20 | Sdgi Holdings, Inc. | Devices and methods for percutaneous surgery |
WO1997038639A1 (en) | 1996-04-18 | 1997-10-23 | Tresona Instrument Ab | Device and method for correcting and stabilising a deviating curvature of a spinal column |
FR2748387B1 (en) | 1996-05-13 | 1998-10-30 | Stryker France Sa | BONE FIXATION DEVICE, IN PARTICULAR TO THE SACRUM, IN OSTEOSYNTHESIS OF THE SPINE |
US6019759A (en) | 1996-07-29 | 2000-02-01 | Rogozinski; Chaim | Multi-Directional fasteners or attachment devices for spinal implant elements |
US6149533A (en) | 1996-09-13 | 2000-11-21 | Finn; Charles A. | Golf club |
US6053078A (en) | 1996-09-18 | 2000-04-25 | Pst Products, Inc. | Wrench for soft golf spikes |
US5797911A (en) | 1996-09-24 | 1998-08-25 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5885286A (en) | 1996-09-24 | 1999-03-23 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5879350A (en) | 1996-09-24 | 1999-03-09 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US6261039B1 (en) | 1996-10-02 | 2001-07-17 | Gary Jack Reed | Thread repair insert |
US5800435A (en) | 1996-10-09 | 1998-09-01 | Techsys, Llc | Modular spinal plate for use with modular polyaxial locking pedicle screws |
JP4128224B2 (en) | 1996-10-09 | 2008-07-30 | ケーツー メディカル, エルエルシー | Modular multi-axis locking stem screw |
US5725528A (en) | 1997-02-12 | 1998-03-10 | Third Millennium Engineering, Llc | Modular polyaxial locking pedicle screw |
US5964760A (en) | 1996-10-18 | 1999-10-12 | Spinal Innovations | Spinal implant fixation assembly |
US5863293A (en) | 1996-10-18 | 1999-01-26 | Spinal Innovations | Spinal implant fixation assembly |
WO1998017188A1 (en) | 1996-10-24 | 1998-04-30 | Spinal Concepts, Inc. | Method and apparatus for spinal fixation |
US6416515B1 (en) | 1996-10-24 | 2002-07-09 | Spinal Concepts, Inc. | Spinal fixation system |
US5728098A (en) | 1996-11-07 | 1998-03-17 | Sdgi Holdings, Inc. | Multi-angle bone screw assembly using shape-memory technology |
US6485494B1 (en) | 1996-12-20 | 2002-11-26 | Thomas T. Haider | Pedicle screw system for osteosynthesis |
US6224596B1 (en) | 1997-01-06 | 2001-05-01 | Roger P. Jackson | Set screw for use with osteosynthesis apparatus |
US6001098A (en) | 1997-01-17 | 1999-12-14 | Howmedica Gmbh | Connecting element for spinal stabilizing system |
DE29701099U1 (en) | 1997-01-23 | 1997-03-06 | Aesculap Ag | Pin-shaped holding element for an orthopedic holding system |
DE69839498D1 (en) | 1997-02-11 | 2008-06-26 | Warsaw Orthopedic Inc | Plate for the anterior cervical spine with fixation system for one screw |
US6139550A (en) | 1997-02-11 | 2000-10-31 | Michelson; Gary K. | Skeletal plating system |
US5733286A (en) | 1997-02-12 | 1998-03-31 | Third Millennium Engineering, Llc | Rod securing polyaxial locking screw and coupling element assembly |
FR2762986B1 (en) | 1997-05-07 | 1999-09-24 | Aesculap Jbs | OSTEOSYNTHESIS SYSTEM FOR VERTEBRAL ARTHRODESIS |
US6413257B1 (en) | 1997-05-15 | 2002-07-02 | Surgical Dynamics, Inc. | Clamping connector for spinal fixation systems |
USD407302S (en) | 1997-05-15 | 1999-03-30 | R & B, Inc. | Supplemental restraint system (SRS) anti-theft fastener |
US6248105B1 (en) | 1997-05-17 | 2001-06-19 | Synthes (U.S.A.) | Device for connecting a longitudinal support with a pedicle screw |
FR2763831B1 (en) | 1997-05-29 | 1999-08-06 | Materiel Orthopedique En Abreg | VERTEBRAL ROD OF CONSTANT SECTION FOR RACHIDIAN OSTEOSYNTHESIS INSTRUMENTATIONS |
DE29710484U1 (en) | 1997-06-16 | 1998-10-15 | Howmedica Gmbh | Receiving part for a holding component of a spinal implant |
US6287308B1 (en) | 1997-07-14 | 2001-09-11 | Sdgi Holdings, Inc. | Methods and apparatus for fusionless treatment of spinal deformities |
US5891145A (en) | 1997-07-14 | 1999-04-06 | Sdgi Holdings, Inc. | Multi-axial screw |
US5944465A (en) | 1997-08-04 | 1999-08-31 | Janitzki; Bernhard M. | Low tolerance threaded fastener |
WO1999021502A1 (en) | 1997-10-24 | 1999-05-06 | Bray Robert S Jr | Bone plate and bone screw guide mechanism |
DE29720022U1 (en) | 1997-11-12 | 1998-01-15 | Schaefer Micomed Gmbh | Intervertebral implant |
EP0933065A1 (en) | 1998-02-02 | 1999-08-04 | Sulzer Orthopädie AG | Pivotable attachment system for a bone screw |
FR2776915B1 (en) | 1998-04-03 | 2000-06-30 | Eurosurgical | SPINAL OSTEOSYNTHESIS DEVICE ADAPTABLE TO DIFFERENCES IN ALIGNMENT, ANGULATION AND DRIVING OF PEDICULAR SCREWS |
US6010503A (en) | 1998-04-03 | 2000-01-04 | Spinal Innovations, Llc | Locking mechanism |
DE19818765A1 (en) | 1998-04-07 | 1999-10-14 | Schaefer Micomed Gmbh | Synthetic bone device for fixing bone fractures |
DE29806563U1 (en) | 1998-04-09 | 1998-06-18 | Howmedica Gmbh | Pedicle screw and assembly aid for it |
US6533786B1 (en) | 1999-10-13 | 2003-03-18 | Sdgi Holdings, Inc. | Anterior cervical plating system |
EP1079753B1 (en) | 1998-05-19 | 2003-12-17 | SYNTHES AG Chur | Osteosynthetic implant with an embedded hinge joint |
US6258089B1 (en) | 1998-05-19 | 2001-07-10 | Alphatec Manufacturing, Inc. | Anterior cervical plate and fixation system |
US6113601A (en) | 1998-06-12 | 2000-09-05 | Bones Consulting, Llc | Polyaxial pedicle screw having a loosely coupled locking cap |
US6565565B1 (en) | 1998-06-17 | 2003-05-20 | Howmedica Osteonics Corp. | Device for securing spinal rods |
DE29810798U1 (en) | 1998-06-17 | 1999-10-28 | Schaefer Micomed Gmbh | Osteosynthesis device |
US6090111A (en) | 1998-06-17 | 2000-07-18 | Surgical Dynamics, Inc. | Device for securing spinal rods |
US6056753A (en) | 1998-07-13 | 2000-05-02 | Jackson; Roger P. | Set screw for use with osteosynthesis apparatus |
US6110172A (en) | 1998-07-31 | 2000-08-29 | Jackson; Roger P. | Closure system for open ended osteosynthesis apparatus |
DE19835816C2 (en) | 1998-08-08 | 2002-02-07 | Schaefer Micomed Gmbh | osteosynthesis |
JP2002523129A (en) | 1998-08-21 | 2002-07-30 | ジンテーズ アクチエンゲゼルシャフト クール | Bone fixation element with snap-fit spherical head |
EP1109502B1 (en) | 1998-09-11 | 2006-03-15 | Synthes AG Chur | Variable angle spinal fixation system |
DE19841801C1 (en) | 1998-09-12 | 2000-05-04 | Hewing Gmbh | Fitting for a pipe |
NZ509937A (en) | 1998-09-29 | 2002-12-20 | Synthes Ag | Device for joining a longitudinal support and bone fixation means |
US6102913A (en) | 1998-10-22 | 2000-08-15 | Jackson; Roger P. | Removeable set screw for medical implant |
FR2785787B1 (en) | 1998-11-12 | 2001-04-13 | Materiel Orthopedique En Abreg | OSTEOSYNTHESIS DEVICE OF AN ANTERIORALLY SPACHED SEGMENT |
JP4488625B2 (en) | 1998-11-26 | 2010-06-23 | ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング | screw |
FR2787014B1 (en) | 1998-12-11 | 2001-03-02 | Dimso Sa | INTERVERTEBRAL DISC PROSTHESIS WITH REDUCED FRICTION |
FR2787016B1 (en) | 1998-12-11 | 2001-03-02 | Dimso Sa | INTERVERTEBRAL DISK PROSTHESIS |
US6302888B1 (en) | 1999-03-19 | 2001-10-16 | Interpore Cross International | Locking dovetail and self-limiting set screw assembly for a spinal stabilization member |
US6280445B1 (en) | 1999-04-16 | 2001-08-28 | Sdgi Holdings, Inc. | Multi-axial bone anchor system |
US6315779B1 (en) | 1999-04-16 | 2001-11-13 | Sdgi Holdings, Inc. | Multi-axial bone anchor system |
US6471703B1 (en) | 1999-04-21 | 2002-10-29 | Sdgi Holdings, Inc. | Variable angle connection assembly for a spinal implant system |
US6254146B1 (en) | 1999-04-23 | 2001-07-03 | John Gandy Corporation | Thread form with multifacited flanks |
US6349794B2 (en) | 1999-04-30 | 2002-02-26 | R. Wilson Spencer | Protection plug |
DE59913885D1 (en) | 1999-05-14 | 2006-11-09 | Synthes Ag | BONE FIXING DEVICE WITH ROTATING JOINT |
US6273888B1 (en) | 1999-05-28 | 2001-08-14 | Sdgi Holdings, Inc. | Device and method for selectively preventing the locking of a shape-memory alloy coupling system |
US6254602B1 (en) | 1999-05-28 | 2001-07-03 | Sdgi Holdings, Inc. | Advanced coupling device using shape-memory technology |
ATE243003T1 (en) | 1999-07-07 | 2003-07-15 | Synthes Ag | BONE SCREW WITH AXIAL TWO-PIECE SCREW HEAD |
FR2796545B1 (en) | 1999-07-22 | 2002-03-15 | Dimso Sa | POLY-AXIAL LINK FOR OSTEOSYNTHESIS SYSTEM, ESPECIALLY FOR THE RACHIS |
FR2796546B1 (en) | 1999-07-23 | 2001-11-30 | Eurosurgical | POLYAXIAL CONNECTOR FOR SPINAL IMPLANT |
DE19936286C2 (en) | 1999-08-02 | 2002-01-17 | Lutz Biedermann | bone screw |
ES2153331B1 (en) | 1999-08-05 | 2001-09-01 | Traiber S A | INTERVERTEBRAL FIXING SYSTEM FOR COLUMN TREATMENTS. |
ES2203173T5 (en) | 1999-08-14 | 2007-05-01 | AESCULAP AG & CO. KG | BONE SCREW. |
US6280442B1 (en) | 1999-09-01 | 2001-08-28 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
AU1493301A (en) | 1999-09-27 | 2001-04-30 | Blackstone Medical, Inc. | A surgical screw system and related methods |
US6554834B1 (en) | 1999-10-07 | 2003-04-29 | Stryker Spine | Slotted head pedicle screw assembly |
DE19950252C2 (en) | 1999-10-18 | 2002-01-17 | Schaefer Micomed Gmbh | bone plate |
US6530929B1 (en) | 1999-10-20 | 2003-03-11 | Sdgi Holdings, Inc. | Instruments for stabilization of bony structures |
CA2386504C (en) | 1999-10-22 | 2008-07-15 | Mark A. Reiley | Facet arthroplasty devices and methods |
DE19951145C2 (en) | 1999-10-23 | 2003-11-13 | Schaefer Micomed Gmbh | osteosynthesis |
DE19957332B4 (en) | 1999-11-29 | 2004-11-11 | Bernd Schäfer | cross-connector |
US6331179B1 (en) | 2000-01-06 | 2001-12-18 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
US6767351B2 (en) | 2000-02-01 | 2004-07-27 | Hand Innovations, Inc. | Fixation system with multidirectional stabilization pegs |
US6440135B2 (en) | 2000-02-01 | 2002-08-27 | Hand Innovations, Inc. | Volar fixation system with articulating stabilization pegs |
US6716247B2 (en) | 2000-02-04 | 2004-04-06 | Gary K. Michelson | Expandable push-in interbody spinal fusion implant |
DE10005385A1 (en) | 2000-02-07 | 2001-08-09 | Ulrich Gmbh & Co Kg | Pedicle screw |
US6443953B1 (en) | 2000-02-08 | 2002-09-03 | Cross Medical Products, Inc. | Self-aligning cap nut for use with a spinal rod anchor |
US6224598B1 (en) | 2000-02-16 | 2001-05-01 | Roger P. Jackson | Bone screw threaded plug closure with central set screw |
US6375657B1 (en) | 2000-03-14 | 2002-04-23 | Hammill Manufacturing Co. | Bonescrew |
US6309391B1 (en) | 2000-03-15 | 2001-10-30 | Sdgi Holding, Inc. | Multidirectional pivoting bone screw and fixation system |
US7322979B2 (en) | 2000-03-15 | 2008-01-29 | Warsaw Orthopedic, Inc. | Multidirectional pivoting bone screw and fixation system |
AR019513A1 (en) | 2000-03-21 | 2002-02-27 | Levisman Ricardo | IMPLANT OF FIXATION. |
US6440137B1 (en) | 2000-04-18 | 2002-08-27 | Andres A. Horvath | Medical fastener cap system |
EP1274354B8 (en) | 2000-04-19 | 2007-04-18 | Synthes GmbH | Device for the articulated connection of two bodies |
JP2001309923A (en) | 2000-04-28 | 2001-11-06 | Robert Reed Shokai Co Ltd | System supporting spinal rod and connection parts to be used therefor |
JP2002000611A (en) | 2000-05-12 | 2002-01-08 | Sulzer Orthopedics Ltd | Bone screw to be joined with the bone plate |
FR2810532B1 (en) | 2000-06-26 | 2003-05-30 | Stryker Spine Sa | BONE IMPLANT WITH ANNULAR LOCKING MEANS |
EP1294295A4 (en) | 2000-06-30 | 2009-12-23 | Stephen Ritland | Polyaxial connection device and method |
GB0016681D0 (en) * | 2000-07-06 | 2000-08-23 | Merck Sharp & Dohme | Therapeutic compounds |
AU2001273356A1 (en) | 2000-07-10 | 2002-01-21 | Gary K. Michelson | Flanged interbody spinal fusion implants |
EP1174092A3 (en) | 2000-07-22 | 2003-03-26 | Corin Spinal Systems Limited | A pedicle attachment assembly |
GB2365345B (en) | 2000-07-22 | 2002-07-31 | Corin Spinal Systems Ltd | A pedicle attachment assembly |
CA2416115C (en) | 2000-07-28 | 2009-09-08 | Synthes (U.S.A.) | Spinal fixation system |
US6533787B1 (en) | 2000-07-31 | 2003-03-18 | Sdgi Holdings, Inc. | Contourable spinal staple with centralized and unilateral prongs |
US6524315B1 (en) | 2000-08-08 | 2003-02-25 | Depuy Acromed, Inc. | Orthopaedic rod/plate locking mechanism |
MXPA03001628A (en) | 2000-08-24 | 2003-06-24 | Synthes Ag | A DEVICE FOR THE UNION OF A BONE FIXING ELEMENT WITH A LONGITUDINAL ROD. |
ES2240384T3 (en) | 2000-09-18 | 2005-10-16 | Zimmer Gmbh | PEDICULAR SCREW FOR INTERVERTEBRAL SUPPORT ELEMENT. |
US6620164B2 (en) | 2000-09-22 | 2003-09-16 | Showa Ika Kohgyo Co., Ltd. | Rod for cervical vertebra and connecting system thereof |
US6755829B1 (en) | 2000-09-22 | 2004-06-29 | Depuy Acromed, Inc. | Lock cap anchor assembly for orthopaedic fixation |
US6953462B2 (en) | 2000-10-05 | 2005-10-11 | The Cleveland Clinic Foundation | Apparatus for implantation into bone |
US6872208B1 (en) | 2000-10-06 | 2005-03-29 | Spinal Concepts, Inc. | Adjustable transverse connector |
US6520962B1 (en) | 2000-10-23 | 2003-02-18 | Sdgi Holdings, Inc. | Taper-locked adjustable connector |
US6551320B2 (en) | 2000-11-08 | 2003-04-22 | The Cleveland Clinic Foundation | Method and apparatus for correcting spinal deformity |
DE10055888C1 (en) | 2000-11-10 | 2002-04-25 | Biedermann Motech Gmbh | Bone screw, has connector rod receiving part with unsymmetrically arranged end bores |
US6656181B2 (en) | 2000-11-22 | 2003-12-02 | Robert A Dixon | Method and device utilizing tapered screw shanks for spinal stabilization |
US6368321B1 (en) | 2000-12-04 | 2002-04-09 | Roger P. Jackson | Lockable swivel head bone screw |
US6726689B2 (en) | 2002-09-06 | 2004-04-27 | Roger P. Jackson | Helical interlocking mating guide and advancement structure |
US6454772B1 (en) | 2000-12-08 | 2002-09-24 | Roger P. Jackson | Set screw for medical implant with gripping side slots |
US6726687B2 (en) | 2000-12-08 | 2004-04-27 | Jackson Roger P | Closure plug for open-headed medical implant |
DE10064571C2 (en) | 2000-12-22 | 2003-07-10 | Juergen Harms | fixing |
EP1219255B1 (en) | 2000-12-27 | 2003-10-15 | BIEDERMANN MOTECH GmbH | Screw for connection to a rod |
US6964665B2 (en) | 2000-12-29 | 2005-11-15 | Thomas James C | Vertebral alignment system |
US6635059B2 (en) | 2001-01-03 | 2003-10-21 | Bernard L. Randall | Cannulated locking screw system especially for transiliac implant |
US6488681B2 (en) | 2001-01-05 | 2002-12-03 | Stryker Spine S.A. | Pedicle screw assembly |
WO2002054966A2 (en) | 2001-01-12 | 2002-07-18 | Depuy Acromed, Inc. | Polyaxial screw with improved locking |
US6558387B2 (en) | 2001-01-30 | 2003-05-06 | Fastemetix, Llc | Porous interbody fusion device having integrated polyaxial locking interference screws |
US6666867B2 (en) | 2001-02-15 | 2003-12-23 | Fast Enetix, Llc | Longitudinal plate assembly having an adjustable length |
US6451021B1 (en) | 2001-02-15 | 2002-09-17 | Third Millennium Engineering, Llc | Polyaxial pedicle screw having a rotating locking element |
DE10108965B4 (en) | 2001-02-17 | 2006-02-23 | DePuy Spine Sàrl | bone screw |
FR2822052B1 (en) | 2001-03-15 | 2003-09-19 | Stryker Spine Sa | ANCHOR WITH LOCK FOR RACHIDIAN OSTEOSYNTHESIS SYSTEM |
FR2822053B1 (en) | 2001-03-15 | 2003-06-20 | Stryker Spine Sa | ANCHORING MEMBER WITH SAFETY RING FOR SPINAL OSTEOSYNTHESIS SYSTEM |
DE10115014A1 (en) | 2001-03-27 | 2002-10-24 | Biedermann Motech Gmbh | anchoring element |
US6554832B2 (en) | 2001-04-02 | 2003-04-29 | Endius Incorporated | Polyaxial transverse connector |
US6599290B2 (en) | 2001-04-17 | 2003-07-29 | Ebi, L.P. | Anterior cervical plating system and associated method |
US7314467B2 (en) | 2002-04-24 | 2008-01-01 | Medical Device Advisory Development Group, Llc. | Multi selective axis spinal fixation system |
US6770075B2 (en) | 2001-05-17 | 2004-08-03 | Robert S. Howland | Spinal fixation apparatus with enhanced axial support and methods for use |
US6478798B1 (en) | 2001-05-17 | 2002-11-12 | Robert S. Howland | Spinal fixation apparatus and methods for use |
US6440133B1 (en) | 2001-07-03 | 2002-08-27 | Sdgi Holdings, Inc. | Rod reducer instruments and methods |
CH695478A5 (en) | 2001-07-20 | 2006-06-15 | Werner Hermann | Threaded bolt, and Pedrikelschraube Pedrikelschraube with threaded bolt |
DE10136129A1 (en) | 2001-07-27 | 2003-02-20 | Biedermann Motech Gmbh | Bone screw and fastening tool for this |
US6673074B2 (en) | 2001-08-02 | 2004-01-06 | Endius Incorporated | Apparatus for retaining bone portions in a desired spatial relationship |
US6520963B1 (en) | 2001-08-13 | 2003-02-18 | Mckinley Lawrence M. | Vertebral alignment and fixation assembly |
US6746449B2 (en) | 2001-09-12 | 2004-06-08 | Spinal Concepts, Inc. | Spinal rod translation instrument |
US6974460B2 (en) | 2001-09-14 | 2005-12-13 | Stryker Spine | Biased angulation bone fixation assembly |
CA2460183C (en) | 2001-09-28 | 2011-04-12 | Stephen Ritland | Connection rod for screw or hook polyaxial system and method of use |
US6899714B2 (en) | 2001-10-03 | 2005-05-31 | Vaughan Medical Technologies, Inc. | Vertebral stabilization assembly and method |
US6623485B2 (en) | 2001-10-17 | 2003-09-23 | Hammill Manufacturing Company | Split ring bone screw for a spinal fixation system |
US6783527B2 (en) | 2001-10-30 | 2004-08-31 | Sdgi Holdings, Inc. | Flexible spinal stabilization system and method |
DE10157969C1 (en) | 2001-11-27 | 2003-02-06 | Biedermann Motech Gmbh | Element used in spinal and accident surgery comprises a shaft joined to a holding element having a U-shaped recess with two free arms having an internal thread with flanks lying at right angles to the central axis of the holding element |
FR2833151B1 (en) | 2001-12-12 | 2004-09-17 | Ldr Medical | BONE ANCHORING IMPLANT WITH POLYAXIAL HEAD |
DE10164323C1 (en) | 2001-12-28 | 2003-06-18 | Biedermann Motech Gmbh | Bone screw has holder element joined to shaft and possessing two free arms , with inner screw, slot, external nut, cavity and shoulder cooperating with attachment |
US6761723B2 (en) | 2002-01-14 | 2004-07-13 | Dynamic Spine, Inc. | Apparatus and method for performing spinal surgery |
US6648887B2 (en) | 2002-01-23 | 2003-11-18 | Richard B. Ashman | Variable angle spinal implant connection assembly |
US6932817B2 (en) | 2002-02-01 | 2005-08-23 | Innovative Spinal Design | Polyaxial modular skeletal hook |
US7678136B2 (en) | 2002-02-04 | 2010-03-16 | Spinal, Llc | Spinal fixation assembly |
US7335201B2 (en) | 2003-09-26 | 2008-02-26 | Zimmer Spine, Inc. | Polyaxial bone screw with torqueless fastening |
WO2003068088A1 (en) | 2002-02-13 | 2003-08-21 | Cross Medical Products, Inc. | Posterior polyaxial system for the spine |
US20040006342A1 (en) | 2002-02-13 | 2004-01-08 | Moti Altarac | Posterior polyaxial plate system for the spine |
US7163538B2 (en) | 2002-02-13 | 2007-01-16 | Cross Medical Products, Inc. | Posterior rod system |
US7066937B2 (en) | 2002-02-13 | 2006-06-27 | Endius Incorporated | Apparatus for connecting a longitudinal member to a bone portion |
FR2836368B1 (en) | 2002-02-25 | 2005-01-14 | Spine Next Sa | SEQUENTIAL LINK DEVICE |
US6740086B2 (en) | 2002-04-18 | 2004-05-25 | Spinal Innovations, Llc | Screw and rod fixation assembly and device |
US6733502B2 (en) | 2002-05-15 | 2004-05-11 | Cross Medical Products, Inc. | Variable locking spinal screw having a knurled collar |
US6682529B2 (en) | 2002-06-11 | 2004-01-27 | Stahurski Consulting, Inc. | Connector assembly with multidimensional accommodation and associated method |
US7175623B2 (en) | 2002-06-24 | 2007-02-13 | Lanx, Llc | Cervical plate with backout protection |
WO2004021901A1 (en) | 2002-09-04 | 2004-03-18 | Aesculap Ag & Co. Kg | Orthopedic fixation device |
DE50206605D1 (en) | 2002-09-04 | 2006-06-01 | Aesculap Ag & Co Kg | ORTHOPEDIC FIXATION DEVICE |
US8282673B2 (en) | 2002-09-06 | 2012-10-09 | Jackson Roger P | Anti-splay medical implant closure with multi-surface removal aperture |
DE10246177A1 (en) | 2002-10-02 | 2004-04-22 | Biedermann Motech Gmbh | Anchor element consists of screw with head, bone-thread section on shank and holder joining rod-shaped part to screw. with cavities in wall, and thread-free end of shank |
FR2845269B1 (en) | 2002-10-07 | 2005-06-24 | Spine Next Sa | PLATE FASTENING SYSTEM |
US6955677B2 (en) | 2002-10-15 | 2005-10-18 | The University Of North Carolina At Chapel Hill | Multi-angular fastening apparatus and method for surgical bone screw/plate systems |
ES2629625T3 (en) | 2002-10-30 | 2017-08-11 | Zimmer Spine, Inc. | Insertion spinal stabilization system |
US8162989B2 (en) | 2002-11-04 | 2012-04-24 | Altus Partners, Llc | Orthopedic rod system |
FR2847152B1 (en) | 2002-11-19 | 2005-02-18 | Eurosurgical | VERTEBRAL ANCHORING DEVICE AND ITS LOCKING DEVICE ON A POLY AXIAL SCREW |
JP4307388B2 (en) | 2002-12-06 | 2009-08-05 | ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング | Bone stabilization device |
DE10260222B4 (en) | 2002-12-20 | 2008-01-03 | Biedermann Motech Gmbh | Tubular element for an implant and implant to be used in spine or bone surgery with such an element |
US6755836B1 (en) | 2002-12-20 | 2004-06-29 | High Plains Technology Group, Llc | Bone screw fastener and apparatus for inserting and removing same |
US6843791B2 (en) | 2003-01-10 | 2005-01-18 | Depuy Acromed, Inc. | Locking cap assembly for spinal fixation instrumentation |
US20040158247A1 (en) | 2003-02-07 | 2004-08-12 | Arthit Sitiso | Polyaxial pedicle screw system |
US20040162560A1 (en) | 2003-02-19 | 2004-08-19 | Raynor Donald E. | Implant device including threaded locking mechanism |
CA2516791C (en) | 2003-02-25 | 2011-12-13 | Stephen Ritland | Adjustable rod and connector device and method of use |
US20040186473A1 (en) | 2003-03-21 | 2004-09-23 | Cournoyer John R. | Spinal fixation devices of improved strength and rigidity |
US6716214B1 (en) | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US20040210216A1 (en) | 2003-04-17 | 2004-10-21 | Farris Robert A | Spinal fixation system and method |
DE10320417A1 (en) | 2003-05-07 | 2004-12-02 | Biedermann Motech Gmbh | Dynamic anchoring device and dynamic stabilization device for bones, in particular for vertebrae, with such an anchoring device |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US8137386B2 (en) | 2003-08-28 | 2012-03-20 | Jackson Roger P | Polyaxial bone screw apparatus |
US20050131413A1 (en) | 2003-06-20 | 2005-06-16 | O'driscoll Shawn W. | Bone plate with interference fit screw |
FR2857850B1 (en) | 2003-06-27 | 2005-08-19 | Medicrea International | MATERIAL OF VERTEBRAL OSTEOSYNTHESIS |
US7731734B2 (en) | 2003-06-27 | 2010-06-08 | Medicrea Technologies | Vertebral osteosynthesis equipment |
US7087057B2 (en) | 2003-06-27 | 2006-08-08 | Depuy Acromed, Inc. | Polyaxial bone screw |
FR2865377B1 (en) | 2004-01-27 | 2006-10-20 | Medicrea | MATERIAL OF VERTEBRAL OSTEOSYNTHESIS |
FR2856578B1 (en) | 2003-06-27 | 2006-03-17 | Medicrea | MATERIAL OF VERTEBRAL OSTEOSYNTHESIS |
FR2856579B1 (en) | 2003-06-27 | 2006-03-17 | Medicrea | VERTEBRAL OSTEOSYNTHESIS EQUIPMENT AND METHOD FOR MANUFACTURING BONE ANCHORING MEMBER INCLUDING THESE MATERIALS |
WO2005006948A2 (en) | 2003-07-03 | 2005-01-27 | Hfsc Company | Top loading spinal fixation device and instruments for loading and handling the same |
US6945975B2 (en) | 2003-07-07 | 2005-09-20 | Aesculap, Inc. | Bone fixation assembly and method of securement |
US6981973B2 (en) | 2003-08-11 | 2006-01-03 | Mckinley Laurence M | Low profile vertebral alignment and fixation assembly |
FR2859095B1 (en) | 2003-09-01 | 2006-05-12 | Ldr Medical | BONE ANCHORING IMPLANT WITH A POLYAXIAL HEAD AND METHOD OF PLACING THE IMPLANT |
US7938858B2 (en) | 2003-09-15 | 2011-05-10 | Warsaw Orthopedic, Inc. | Spinal implant system |
US7875060B2 (en) | 2003-09-24 | 2011-01-25 | Spinefrontier, LLS | Multi-axial screw with a spherical landing |
US20050080415A1 (en) | 2003-10-14 | 2005-04-14 | Keyer Thomas R. | Polyaxial bone anchor and method of spinal fixation |
US7090674B2 (en) | 2003-11-03 | 2006-08-15 | Spinal, Llc | Bone fixation system with low profile fastener |
CA2449883A1 (en) | 2003-11-18 | 2005-05-18 | Terray Corporation | Taper-lock bone screw fixation system |
US7862586B2 (en) | 2003-11-25 | 2011-01-04 | Life Spine, Inc. | Spinal stabilization systems |
US7846190B2 (en) | 2003-12-12 | 2010-12-07 | Integra Lifesciences Corporation | Apparatuses, systems and methods for bone fixation |
US7527638B2 (en) | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US7670360B2 (en) | 2003-12-19 | 2010-03-02 | Orthopaedic International, Inc. | Low profile anterior thoracic and thoracolumbar plate |
AU2004311447A1 (en) | 2003-12-30 | 2005-07-21 | Depuy Spine Sarl | Bone anchor assemblies |
EP2050407A1 (en) | 2003-12-30 | 2009-04-22 | DePuy Spine Sàrl | Bone anchor assemblies |
US7678137B2 (en) | 2004-01-13 | 2010-03-16 | Life Spine, Inc. | Pedicle screw constructs for spine fixation systems |
US7637928B2 (en) | 2004-01-26 | 2009-12-29 | Synthes Usa, Llc | Variable angle locked bone fixation system |
FR2865373B1 (en) | 2004-01-27 | 2006-03-03 | Medicrea International | MATERIAL OF VERTEBRAL OSTEOSYNTHESIS |
FR2865375B1 (en) | 2004-01-27 | 2006-12-15 | Medicrea International | MATERIAL OF VERTEBRAL OSTEOSYNTHESIS |
US7597694B2 (en) | 2004-01-30 | 2009-10-06 | Warsaw Orthopedic, Inc. | Instruments and methods for minimally invasive spinal stabilization |
DE102004009429A1 (en) | 2004-02-24 | 2005-09-22 | Biedermann Motech Gmbh | Bone anchoring element |
US7311712B2 (en) | 2004-02-26 | 2007-12-25 | Aesculap Implant Systems, Inc. | Polyaxial locking screw plate assembly |
US20050203511A1 (en) | 2004-03-02 | 2005-09-15 | Wilson-Macdonald James | Orthopaedics device and system |
DE102004010380A1 (en) | 2004-03-03 | 2005-09-22 | Biedermann Motech Gmbh | Anchoring element and stabilizing device for the dynamic stabilization of vertebrae or bones with such an anchoring element |
DE102004010382B4 (en) | 2004-03-03 | 2006-04-20 | Biedermann Motech Gmbh | Bone anchoring element for anchoring in a bone or in a vertebra and its use in a stabilizing device |
DE102004010844A1 (en) | 2004-03-05 | 2005-10-06 | Biedermann Motech Gmbh | Stabilizing device for the dynamic stabilization of vertebrae or bones and rod-shaped element for such a stabilization device |
US7503924B2 (en) | 2004-04-08 | 2009-03-17 | Globus Medical, Inc. | Polyaxial screw |
US7377922B2 (en) | 2004-04-15 | 2008-05-27 | Warsaw Orthopedic, Inc. | Transfer ring for offset tapered 3D connector |
US7648520B2 (en) | 2004-04-16 | 2010-01-19 | Kyphon Sarl | Pedicle screw assembly |
US7524323B2 (en) | 2004-04-16 | 2009-04-28 | Kyphon Sarl | Subcutaneous support |
WO2005102195A1 (en) | 2004-04-20 | 2005-11-03 | Allez Spine, Llc | Pedicle screw assembly |
US20050240181A1 (en) | 2004-04-23 | 2005-10-27 | Boomer Mark C | Spinal implant connectors |
US7942912B2 (en) | 2004-05-25 | 2011-05-17 | University Of Utah Research Foundation | Occipitocervical plate |
US7901435B2 (en) | 2004-05-28 | 2011-03-08 | Depuy Spine, Inc. | Anchoring systems and methods for correcting spinal deformities |
DE102004027881B4 (en) | 2004-05-28 | 2006-06-01 | Aesculap Ag & Co. Kg | Bone screw and osteosynthesis device |
US7559943B2 (en) | 2004-06-09 | 2009-07-14 | Zimmer Spine, Inc. | Spinal fixation device with internal drive structure |
KR100858306B1 (en) | 2004-06-14 | 2008-09-11 | 엠.에스. 아브두 | Orthopedic device |
US7857834B2 (en) | 2004-06-14 | 2010-12-28 | Zimmer Spine, Inc. | Spinal implant fixation assembly |
US7727266B2 (en) | 2004-06-17 | 2010-06-01 | Warsaw Orthopedic, Inc. | Method and apparatus for retaining screws in a plate |
US7264621B2 (en) | 2004-06-17 | 2007-09-04 | Sdgi Holdings, Inc. | Multi-axial bone attachment assembly |
US7766945B2 (en) | 2004-08-10 | 2010-08-03 | Lanx, Inc. | Screw and rod fixation system |
US7186255B2 (en) | 2004-08-12 | 2007-03-06 | Atlas Spine, Inc. | Polyaxial screw |
US20060052783A1 (en) | 2004-08-17 | 2006-03-09 | Dant Jack A | Polyaxial device for spine stabilization during osteosynthesis |
US20060052784A1 (en) | 2004-08-17 | 2006-03-09 | Zimmer Spine, Inc. | Polyaxial device for spine stabilization during osteosynthesis |
US20060052786A1 (en) | 2004-08-17 | 2006-03-09 | Zimmer Spine, Inc. | Polyaxial device for spine stabilization during osteosynthesis |
US20060058788A1 (en) | 2004-08-27 | 2006-03-16 | Hammer Michael A | Multi-axial connection system |
US7306606B2 (en) | 2004-12-15 | 2007-12-11 | Orthopaedic Innovations, Inc. | Multi-axial bone screw mechanism |
-
2004
- 2004-02-20 US US10/784,066 patent/US8257402B2/en active Active
- 2004-09-29 WO PCT/US2004/031934 patent/WO2005081690A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6063090A (en) * | 1996-12-12 | 2000-05-16 | Synthes (U.S.A.) | Device for connecting a longitudinal support to a pedicle screw |
US6004349A (en) * | 1997-01-06 | 1999-12-21 | Jackson; Roger P. | Set screw for use with osteosynthesis apparatus |
US6296642B1 (en) * | 1998-11-09 | 2001-10-02 | Sdgi Holdings, Inc. | Reverse angle thread for preventing splaying in medical devices |
Also Published As
Publication number | Publication date |
---|---|
WO2005081690A3 (en) | 2006-05-18 |
US8257402B2 (en) | 2012-09-04 |
US20040167526A1 (en) | 2004-08-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6997927B2 (en) | closure for rod receiving orthopedic implant having a pair of spaced apertures for removal | |
US8257402B2 (en) | Closure for rod receiving orthopedic implant having left handed thread removal | |
EP1539004B1 (en) | Helical wound mechanically interlocking mating guide and advancement structure | |
US8128667B2 (en) | Anti-splay medical implant closure with multi-surface removal aperture | |
US20060009773A1 (en) | Helical interlocking mating guide and advancement structure | |
US20220361926A1 (en) | Threaded plugs with splay resisting thread forms for bone anchor receivers | |
AU2005304849B8 (en) | Helical guide and advancement flange with break-off extensions | |
US20040167524A1 (en) | Anti-splay medical implant closure with central multi-surface insertion and removal aperture | |
US20040167525A1 (en) | Anti-splay medical implant closure with multi-stepped removal counterbore | |
AU2006235916B2 (en) | Helical wound mechanically interlocking mating guide and advancement structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase |