CN101842057B - Variable angle locked bone plate - Google Patents
Variable angle locked bone plate Download PDFInfo
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- CN101842057B CN101842057B CN200880114463.3A CN200880114463A CN101842057B CN 101842057 B CN101842057 B CN 101842057B CN 200880114463 A CN200880114463 A CN 200880114463A CN 101842057 B CN101842057 B CN 101842057B
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- Prior art keywords
- fixed component
- bone
- receiver hole
- plate
- screw
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- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
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- 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
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
Abstract
A plate for fixation to a target portion of bone to be treated, comprises a first fixation element receiving opening extending therethrough from a proximal surface to a distal surface, the first fixation element receiving opening including a plurality of columns distributed about a circumference thereof and a plurality of radially expanded sections separating adjacent ones of the columns from one another in combination with a plurality of projections formed on the columns, the projections extending from surfaces of the columns, shapes of the surfaces of the columns on which the projections are formed being selected so that, when engaged by a head of a bone fixation element, the projections engage a thread of a head of the bone fixation element to lock the bone fixation element in the first fixation element receiving opening at any user selected angle within a permitted range of angulation.
Description
Prioity claim
The application requires the priority of following application: (1) on October 30th, 2007 submit to be entitled as " variable angle locked hone lamella (Variable Angle Locked Bone Plate) " the 61/000th, No. 907 U.S. Provisional Applications, (2) on July 29th, 2008 submit to be entitled as " variable angle locked hone lamella (Variable Angle Locked Bone Plate) " the 61/084th, No. 281 U.S. Provisional Applications.The description of above-mentioned application is incorporated herein by reference.
Background technology
The present invention relates to the bone fastening assembly of locking, relate to particularly the assembly that allows surgeon to select with respect to the angle of fixture bone screw.
Usually use the securing member of for example screw, bolt or pin to connect with bone with outside orthopedic fixation devices inside.For example, can hone lamella be anchored on to bone by the bone screw of inserting threading hole.Screw fastening provided between plate and screw to fixing angular relationship in plate and reduced loosening generation.Screw fastening is comprised and uses so-called " expansion-head screws " in a kind of method of plate.The 4th, 484, No. 570 United States Patent (USP) discloses a kind of expansion-head screws, and this expansion-head screws has the head that comprises recess, and the wall of recess comprises multiple slits.Expansion-head screws, is inserted lock screw in recess so that the wall of recess expands after inserting bone through being arranged in the hole of fixture, thus by screw lock for example, due to fixture (, plate, inner fixture, nail or bar).Screw fastening is comprised and being used as the 5th in the another kind of method of plate, 053, No. 036, the 5th, 151, No. 103 and the 6th, 206, conical nose shown in No. 881 United States Patent (USP)s, these three United States Patent (USP)s disclose cone screw hole, and this cone screw hole is suitable for receiving the screw with the conical nose that is predetermined cone angle, and plate can not slided from the head of screw.Screw fastening is comprised and uses so-called " lock screw " in the third method of plate.Lock-screw has screw thread on the outer surface of its head, and this screw thread mates that with the lip-deep corresponding screw thread of plate hole screw lock is scheduled to plate.The hone lamella with the screwed hole for holding lock screw is known, as the 5th, and 079, No. 686 and the 6th, shown in 730, No. 091 United States Patent (USP)s.
Except by screw fastening in fixture, also often expect that the angle with respect to fixture to be selected by surgeon is inserted screw.Prior art discloses multiple this so-called " multi-axial cord " system, and the great majority in these " multi-axial cord " systems adopt the lining in the hole that is arranged in fixture, so that the locking of carrying out with respect to the angle of the different number of degrees of fixture with screw to be provided.For example, the 5th, 954, No. 722 United States Patent (USP) discloses multi-axial cord (through the variable axis of the selecting) lockplate that comprises plate hole, and this plate hole has the lining that can rotate in plate hole.When screw is inserted in bone through lining and plate hole, the threaded convergent head of screw engages with the threaded inner surface of lining with expanded liner and against the wall of plate hole, thereby with the expectation angular orientation with respect to plate, screw is carried out to friction lock.The 6th, 575, No. 975 United States Patent (USP) discloses the multi-axial cord lockplate that comprises plate hole, hold-down screw and lock screw, and plate hole has the lining that can rotate in plate hole.The head of hold-down screw comprises radial wall, and this radial wall allows outwards to expand the sidewall of lining is outwards expanded, thereby hold-down screw is locked in to lining and fixture.The 7th, in 273, No. 481 United States Patent (USP)s, similar device is disclosed.
Some other what is called " multi-axial cord " system adopts the annular element of locating in the hole of fixture.For example, the 6th, 454, No. 769 United States Patent (USP) discloses plate system and fixing means, comprises hone lamella, bone screw and annular element, thus described annular element inflatable against hone lamella with through select angle with respect to hone lamella, bone screw is fixed.
For operating at during surgery to obtain for bone screw being introduced for the expected angle in patient body, these multipart conventional panels assemblies may be heavy and trouble.The 6th, 955, No. 677 United States Patent (USP)s and No. 2005/0165400 and No. 2005/0277937 United States Patent (USP) disclose other multi-axial cord system.
Summary of the invention
The present invention relates to a kind of plate being fixed for the target part of the bone to be treated, comprise: the first fixed component receiver hole, from proximal face to distal surface, running through plate extends, when plate is connected to the target part of bone with the form of expecting, proximal face is towards the direction away from bone, distal surface is when the form lower time in expecting is towards bone, the first fixed component receiver hole comprises: multiple columns, around the circle distribution of the first fixed component receiver hole, each column extends to distal surface from proximal face, multiple radial expansion portion, makes adjacent column separated from one another, and the multiple protuberances that form on column, multiple protuberances extend from the surface of column along the part in the path of the inner surface spiral extension around the first fixed component receiver hole, the surperficial shape that is formed with protuberance of column is selected as making when the engagement of protuberance and the bone fixed component locking in described the first fixed component receiver hole, thereby being threadedly engaged with any angle of selecting through user within the scope of the angulation in allowing of the head of protuberance and bone fixed component is locked in bone fixed component in the first fixed component receiver hole.
Accompanying drawing explanation
Fig. 1 shows the axonometric chart of the bone fastening assembly of first embodiment of the invention, wherein shows and has the hone lamella in 4 holes and insert hone lamella threaded ball screw before;
Fig. 2 is the axonometric chart with the screw of spherical head;
Fig. 3 is the front view with the bone fastening assembly of the screw of two separation, and each screw, with the different angles locking with respect to plate, wherein removes hone lamella the latched position that screw is shown with the best;
Fig. 4 is the axonometric chart of the plate hole of first embodiment of the invention;
Fig. 5 is the sectional block diagram at the 1A-1A place at Fig. 4 of plate hole;
Fig. 6 is the sectional front view at the 1A-1A place at Fig. 4 of plate hole;
Fig. 7 is the axonometric chart of the bone fastening assembly of first embodiment of the invention, and wherein, screw is vertically locked in hone lamella, and wherein, the first half of plate has been moved forward to allow to observe better locking system;
Fig. 8 is the axonometric chart of the bone fastening assembly of first embodiment of the invention, and wherein, screw locks obliquely, and wherein, the first half of plate has been moved forward to allow to observe better locking system;
Fig. 9 is the front view of the bone fastening assembly of first embodiment of the invention, and wherein, screw vertically locks, and wherein, the first half of plate has been removed to allow better to observe locking system;
Figure 10 is the front view of the bone fastening assembly of first embodiment of the invention, and wherein, screw locks obliquely, and wherein, the first half of plate has been removed to allow to observe better locking system;
Figure 11 illustrates the axonometric chart of bone fastening assembly second embodiment of the invention, wherein shows and has the hone lamella in 4 holes and insert hone lamella threaded ball screw before;
Figure 12 is the axonometric chart with the screw of frustoconical head;
Figure 13 is the front view with the bone fastening assembly of the screw of two separation, and each screw locks with the different angles with respect to plate, and wherein, hone lamella is removed to the latched position that screw is shown with the best;
Figure 14 is the axonometric chart of plate hole second embodiment of the invention;
Figure 15 is the sectional block diagram at the 1A-1A place at Fig. 4 of plate hole;
Figure 16 is the sectional front view at the 1A-1A place at Fig. 4 of plate hole;
Figure 17 is the axonometric chart of bone fastening assembly second embodiment of the invention, and wherein, screw is vertically locked in hone lamella, and wherein, the first half of plate has been moved forward to allow to observe better locking system;
Figure 18 is the axonometric chart of bone fastening assembly second embodiment of the invention, and wherein, screw locks obliquely, and wherein, the first half of plate has been moved forward to allow to observe better locking system;
Figure 19 is the front view of bone fastening assembly second embodiment of the invention, and wherein, screw vertically locks, and wherein, the first half of plate has been removed to allow better to observe locking system; And
Figure 20 is the front view of bone fastening assembly second embodiment of the invention, and wherein, screw locks obliquely, and wherein, the first half of plate has been removed to allow to observe better locking system.
The specific embodiment
The present invention relates to for the treatment of the device fractureing, relate to particularly for the treatment of the internal fixing device fractureing, can further understand the present invention with reference to the following description and drawings.Example embodiment of the present invention is described improved bone fastening assembly, and this improved bone fastening assembly allows surgeon in single motion, bone screw to be selected with respect to the angle of plate.Thereby this assembly is only used two parts without any annular element, lining or expansion-head screws.Although those skilled in the art will appreciate that about screw/pin and plate example embodiment is described, this device can be fixed fractureing with any known fixed component.
As shown at Fig. 1-Figure 10, according to the device 100 of the first example embodiment of the present invention, comprise screw or pin 102 and plate 104.As shown in fig. 1, plate 104 comprises at least one hole 106 that receives screw or pin 102.As shown in Figure 2, screw or pin 102 also comprise head 108 and bar portion 110.Bar portion 110 extends lengthwise into near-end 114 from far-end 112.Head 108 is substantially spherical in shape and comprise screw thread 116, screw thread 116 with for example along axis or radially surface can be essentially constant tooth apart from extending around the outer surface 118 of head.The near-end 120 of head 108 can comprise and screws member 122, to screw screw or pin 102 holes 106 through plate 104.Hexagon recess or any other recess or projection shown in screwing member 122 and can being for example, makes screw or pin 102 around the axis of screw or pin 102, rotate to screw screw or pin 102 through hole 106 thereby can make recess or protrusion engagement so that apply twisting resistance to screw or pin 102.Screw or pin 102 can also comprise cervical region 124, and cervical region 124 is connected to the far-end of head 108 125 near-end 114 of bar portion 110.As at following, the diameter of cervical region 124 is less than the diameter of head 108 and bar portion 110 in greater detail, to improve screw or pin 102 scopes with respect to plate 104 angulations.Those skilled in the art will appreciate that equally with traditional bone screw, along the length of screw or pin 102 bar portion 110, provide screw thread alternatively.Those skilled in the art it is also understood that, screw thread 116 can be with such tooth apart from extending to far-end 112 around the outer surface 118 of head 108 and along the length of bar portion 110 from near-end 114, is convenient to screw or pin 102 to insert in bones when this tooth distance is selected as in head 108 is screwed into plate 104.
As shown in Figure 3, the hole 106 of plate 104 is suitable for and is configured to receiving screw or selling 102 head 108 with any angle with respect to 106 axis, hole in the scope of the angulation in license.Can from any angle with respect to 106 axis, hole of 0 ° to 45 °, insert screw or pin 102 coaxially or with scope with hole 106.In replaceable embodiment, the scope of angulation is that axis with respect to hole 106 is from 0 ° to about 15 °.Because head 108 is substantially spherical in shape, the insertion angle that therefore changes screw or pin 102 can make head 108 with circular-mode (pattern) 101 rotations.As shown in Fig. 4-Fig. 6, hole slave plate 104 runs through plate 104 towards the proximal face 126 of the direction away from bone to the surface 128 towards bone of far-end.Hole 106 comprises multiple concave parts 130 (being 4 concave parts 130 in this embodiment), and multiple concave parts 130 are around the circumference in hole 106 and make multiple columns 132 separated from one another.Each column 132 has complicated shape, it comprises Part I 134, Part I 134 from proximal face 126 to far-end 138 towards the axis in hole 106 inside convergent radially, Part I 134 is connected to Part II 136 at far-end 138 places, the distal surface 128 radially outward flaring of Part II 136 from the far-end of Part I 134 to plate 102.The Part I 134 of column 132 is along the first tapered arrangement substantially of line centered by the axis by hole 106, and the Part II 136 of column 132 is along the second tapered arrangement substantially of line centered by the axis by hole 106.As described in more detail below, concave part 130 between these columns 132 be for example radially outward exceed that the first taper and the second taper extend to the columniform additive of being essentially of hole 106, the first taper and the second conical expansion the screw of slotting perforation 106 or the angulation scope of pin 102.
In the exemplary embodiment, hole 106 can comprise 4 columns 132, and these 4 columns 132 are around the circumference in hole 106 equally-spaced substantially each other, and the width of concave part 130 is substantially equal to one another.But those skilled in the art will appreciate that hole 106 can comprise any amount of column 132 with any amount of mode arrangement.In addition, those skilled in the art be further appreciated that column 132 needn't be each other equidistantly (that is, and they can around the circumference in hole 106 with change apart from interval), and they can also have different width.
Part I 134 preferably extends radially inwardly from proximal face 126 with the angle of the axis with respect to hole corresponding with the maximum angulation of screw.In this embodiment, this angle can be between 0 ° to 45 ° or more preferably between 0 ° and 15 ° according to desired angulation.Part I 134 also comprises the multiple row threaded line (threads) 140 extending to from the surface of Part I 134 hole 106.Each column 132 can comprise at least two independent threaded line 140.But those skilled in the art will appreciate that column 132 can comprise any amount of threaded line 140.If threaded line 140 is suitable for and is configured to engage with the screw thread 116 of head 108 and for example strides across along continuity the path that the interval being formed by concave part 130 may form helical thread extending, this helical thread has the tooth distance of the substantial constant corresponding with the screw thread 116 of the head 108 of screw or pin 102.Alternatively, the threaded line 140 on each column 132 can be located along Part I 134, threaded line 140 is arranged with respect to threaded line 140 substantial symmetry of all the other columns 132.In addition, as understood by the skilled person in the art, threaded line 140 by corners so that engage with the screw thread 116 of screw or pin 102 head 108.
Part II 136 with scope from 0 ° to 45 ° but the angle that is preferably the axis with respect to hole 106 of about 15 ° from the far-end 138 of Part I 134, to the distal surface 128 of plate 104, extend radially outwardly, the tapered portion substantially that makes to be formed by the Part II 136 of multiple columns 132 is suitable for and the angle that is configured to change is held the near-end 114 of bar portion 110.The length of Part I 134 can be substantially long than the length of Part II 136, allows to make the head 108 of screw 102 to be fixed in the hole 106 of plate 102.
As shown in Fig. 7-Figure 10, the spherical form of screw head 108 allows the screw thread 116 of screw head 108 to engage with threaded line 140, and no matter be to insert coaxially screw head 108 with the axis in hole 106 as shown in Fig. 7 and Fig. 9, still as shown in Fig. 8 and Figure 10, therefrom screw head 108 is inserted in journal offset.Those skilled in the art will appreciate that according to the angle of the quantity of threaded line 140 and screw 102, the screw thread 116 of head 108 can not engage with all threaded line 140.Diameter also can hold the far-end 138 of the Part I 134 of column 132 than the little cervical region 124 of diameter of head 108 and bar portion 110 both any, its king-rod portion 110 tilts towards far-end 138.As understood by the skilled person in the art, this has formed the recess that receives therein bar portion 110, thereby allows to increase the angulation of screw 102 with respect to the axis in hole 106.
In use, plate 104 as above is positioned at and the desired locations for the treatment of that firm a part of bone is contiguous.As mentioned above, according to pending bone, screw or pin 102 are inserted to perforation 106 coaxially or to be offset an angle from the axis in hole 106 with hole 106.For example, can before inserting screw or pin 102, be that each screw and/or the pin 102 in multiple screws and/or pin 102 determined the insertion angle of expecting, to realize the effect of expecting in the target part at bone.Then by each screw or pin 102 angle patchholes 106 with its expectation, the screw thread 116 of head 108 is engaged with threaded line 140, thereby this angle hold-down screw or pin 102 with the axis with respect to hole 106 are fixed on target part by plate 104, have realized the angle locking of any expectation etc.
As shown in Figure 11-Figure 20, according to the device 200 of the second illustrative embodiments of the present invention, comprise the plate 204 that is suitable for use together with screw or pin 202, screw or pin 202 have the heads 208 of the taper of being essentially to replace the spherical head of screw or pin 102.Device 200 can be substantially similar with device 100 as above, except aspect the geometry of the head 208 of the geometry in the hole 206 in plate 204 described below and screw or pin 202.As shown in Figure 11, plate 204 comprises at least one hole 206 (being 4 holes 206 in this case), at least one hole 206 is suitable for and is configured to receiving screw and pin 202 with the expected angle with respect to 206 axis, hole, wherein in screw and pin 202 patchholes 206.As shown in Figure 12, screw 202 comprises head 208 and bar portion 210.Bar portion 210 extends to near-end 214 from far-end 212, and head 208 is formed on the near-end 214 of bar portion 210.But different from screw or pin 102, the head 208 of screw or pin 202 is taper substantially, and the near-end 218 of head 208 has the diameter larger than the far-end of head 208 216.Conical nose 208 with respect to the axis of screw or pin with scope the angle between 5 degree and 15 degree but preferably with the angle that is approximately 10 degree from near-end 218 to far-end 216 convergents.
As described about screw or pin 102 above, the far-end 216 of head 208 can be connected to the near-end 214 of bar portion 210, but has the more cervical region of minor diameter without comprising.When screw or pin 202 the axis with respect to hole 204 tilt time, screw or pin 202 without undercut any part with accommodation hole 206.If needed, bar portion 210 can also comprise the screw thread arranging along any part of bar portion 210 length.As understood by the skilled person in the art, can also be with the tooth of substantial constant of tooth distance that is substantially equal to screw thread 220 apart from forming the screw thread of bar portion 210, make when screw 202 is rotatably screwed in hole 206, the helical of bar portion 210 advances in bone with phase same rate.
As shown in Figure 13, screw or pin 202 can with the axis in hole 206 coaxially or with respect to axis, be offset an angle and be received in hole 206.As will be following described, then the screw thread 220 of head 208 engages with the part in hole 206, with by screw or sell 202 and be fixed to plate 204 with the angle of expectation.Screw or pin 202 can be with scope from the angle of 0 ° to 20 ° but preferably scope from 0 ° until the angle patchhole 206 of 15 °.As shown in Figure 14-Figure 16, hole 206 slave plates 204 extend to the distal surface 228 towards bone towards the proximal face 226 of the direction away from bone, and plate 204 is arranged on bone.Similar with plate 104, the hole 206 of plate 204 comprises multiple concave parts 230, and multiple concave parts 230 are around the circumference in hole 206, thereby makes multiple columns 232 separated from one another.If each column forms a surperficial part that is not divided into fragment and may has circular cross-section by concave part 230 in the plane vertical with the axis in hole 206.Each column 232 has on curved surface 240 complicated shape extending and does not comprise Part I and the Part II of inclination, and curved surface 240 comprises the proximal portion 234 contiguous with proximal face 226 and the extremity 236 contiguous with distal surface 228.Proximal portion 234 radially curves inwardly (towards the axis in hole 206) when its far-end 238 from proximal face 226 proximad portions 234 extends, and extremity 236 is from the far-end 238 of proximal portion 234 to radially outward bending (leaving the axis in hole 206) of distal surface 228.Curved surface 240 forms substantially continuous convex shape, substantially continuous convex shape radially extends in hole 206 towards the part between distal surface 228 and proximal face 226 in hole 206 respectively, and each in distal surface 228 and proximal face 226 radially outward moves respectively.Concave part 230 between column 232 for example can be formed as extending radially outwardly is essentially columniform additament.
In a preferred embodiment, hole 206 can comprise 232 and 3 concave parts 230 of 3 columns, and column 232 is around the interval, even circumferential ground in hole 206, and concave part 230 is between the adjacent pillar of these columns 232.But those skilled in the art will appreciate that interiorly in hole 206 can adopt any amount of column 232 and concave part 230, as long as the structure forming allows screw or pin 202 to have the angulation of expectation in hole 206.
The arc that can select based on various factors column 232, these factors include but not limited to: the greatest hope angle of inclination of size, screw or pin 202 axis with respect to hole 206 in hole 206 and the bevel angle of the head 208 of screw or pin 202.Those skilled in the art will appreciate that can be than large with the mutually tangent angle of arc at extremity 236 places of column 232, to hold the taper of head 208 with the mutually tangent angle of arc of the proximal portion 234 of column.Can be by by screw or pin the greatest hope angle of inclination of 202 axis with respect to hole 206 and the bevel angle phase Calais of head 208 determine and the mutually tangent angle of proximal portion 234 of column 232.For example, if the bevel angle of head 208 is 10 °, the greatest hope angle of inclination of screw or pin 102 is 15 °, and proximal portion 234 should be formed as making the tangent line tangent with proximal portion 234 in respect to axis being the angle of 25 ° so.Can determine and the mutually tangent angle of extremity 236 by the bevel angle that deducts head 208 from the greatest hope angle of inclination of screw or pin 202.Thereby if adopt preferred angle same as described above and bevel angle, extremity 236 should be formed as providing the tangent line tangent with surface that becomes 5 ° of angles with respect to the axis in hole 206 so.
Be similar to above-mentioned hole 106, each column 232 comprises string threaded line 242, and this row threaded line 242 is extended and be separated from one another along the length of column 232 to distal surface 228 from proximal face 226 on whole column 232.Threaded line 242 extends in hole 206 in the identical mode of mode of extending at known screwed hole place with screw thread.In one embodiment, each threaded line 242 is substantially perpendicularly to extend to hole 206 from the outstanding similar mode of curved surface and with the tangent tangent line in the surface of column 232 with the tooth of gear, and in replaceable embodiment, each threaded line 242 (for example, with the plane of the axis perpendicular in hole 206 in) in substantially parallel plane extends in hole 106.Similar with the threaded line 140 in hole 106, if threaded line 242 is extended on each column 232 along not separated the path that may form the spirality path with tooth distance by concave part 230, this tooth apart from be selected as when head 208 by precession hole 206 in time be convenient to make in screw or pin 102 insertion bones.But those skilled in the art will appreciate that and can position with any double thread line 242 in various patterns, as long as threaded line 242 engages with the screw thread 220 of head 208, in hole 206 by the head 208 of screw or pin 202 directional lock with expectation.
As shown in Figure 17-Figure 20, the taper of head 208 allows the screw thread 220 of head 208 to engage with a part of threaded line 242 in the gamut of the expectation angulation across screw or pin 202 axis with respect to hole 206, and is no matter with the coaxial mode in the axis in hole 206 or be offset an angle with respect to axis as shown in Figure 18 and Figure 20 as shown in Figure 17 and Figure 19.Can with as above about the described like that substantially the same mode operative installationss 200 of device 100.In addition, as understood by the skilled person in the art, screw or pin 202 can be used together with the plate 104 of device 100, make when with hole 106 coaxially or while inserting conical nose 208 with respect to the axis in hole 106 with an angle, the screw thread 220 of conical nose 208 engages with the threaded line 140 of plate 104.
It will be apparent to those skilled in the art that in the situation that not deviating from the spirit or scope of the present invention, can carry out various modifications and variant to structure of the present invention and method.Thereby, if modification of the present invention and variant fall into claims and the scope that is equal in, the present invention comprises these modifications and variant so.
Claims (12)
1. the plate being fixed for the target part of the bone to be treated, comprising:
The first fixed component receiver hole, from proximal face to distal surface, running through described plate extends, described in when described plate is connected to the target part of described bone with the form of expecting, proximal face is towards the direction away from described bone, described distal surface is when the form lower time in described expectation is towards described bone, described the first fixed component receiver hole extends to described distal surface along axis from described proximal face, and described the first fixed component receiver hole comprises:
Multiple columns, around the circle distribution of described the first fixed component receiver hole, each column extends to described distal surface from described proximal face;
Multiple radial expansion portion, makes adjacent column separated from one another; And
The multiple protuberances that form on column, described multiple protuberance extends from the surface of column along the part in the path of the inner surface spiral extension around described the first fixed component receiver hole, each protuberance stretches out from the surface of corresponding column in the direction that is substantially perpendicular to described axis, the surperficial shape that is formed with protuberance of column is selected as making when the engagement of protuberance and the bone fixed component locking in described the first fixed component receiver hole, thereby being threadedly engaged with any angle of selecting through user within the scope of the angulation in allowing of the head of protuberance and described bone fixed component is locked in described bone fixed component in described the first fixed component receiver hole.
2. plate as claimed in claim 1, wherein, the size and dimension of described the first fixed component receiver hole is confirmed as with the expected angle of the axis with respect to described the first fixed component receiver hole, bone fixed component being locked in described the first fixed component receiver hole, protuberance along the axis of described the first fixed component receiver hole with the tooth of the helical thread on head in described bone fixed component apart from corresponding distance separation, the helical thread of the head of a part of protuberance in multiple protuberances and described bone fixed component is threadedly engaged with.
3. plate as claimed in claim 1, wherein, each column comprises Part I, described Part I in described the first fixed component receiver hole from described proximal face to radially inside convergent of flex point, each described column comprises Part II, described Part II, from described flex point to radially outward flaring of described distal surface, makes the cross-sectional area of described the first fixed component receiver hole little in described proximal face and distal surface place at described flex point place ratio.
4. plate as claimed in claim 1, wherein, the first radial expansion part in radial expansion portion is formed as being essentially columniform chamber, described in be essentially columniform chamber be arranged essentially parallel to described the first fixed component receiver hole axis extend.
5. plate as claimed in claim 4, wherein, the cross section of the part being formed by column of described the first fixed component receiver hole in the plane vertical with the axis of described the first fixed component receiver hole is circular substantially, and wherein, described the first radial expansion part radially extends beyond the diameter of described the first fixed component receiver hole in the part at described proximal face and distal surface place.
6. plate as claimed in claim 1, wherein, the surperficial shape that is formed with protuberance of column is formed as being threadedly engaged with the screw thread forming on the head that is essentially taper of bone fixed component, described bone fixed reception member with within the scope of the angulation in described permission through user select angle locking in described the first fixed component receiver hole.
7. plate as claimed in claim 1, wherein, the surface that is formed with protuberance of column is the curved surface of shape bending in the plane parallel with the axis of described the first fixed component receiver hole, make the maximum expectation angulation that equals bone fixed component with respect to the angle of the axis of the first fixed component receiver hole of central authorities at the position of contiguous described proximal face and the tangent tangent line of described curved surface add the bevel angle of the conical nose of the above bone fixed component, described bone fixed component is locked in described the first fixed component receiver hole.
8. plate as claimed in claim 7, wherein, at the position of contiguous described proximal face and the tangent tangent line of described curved surface in the scope from 25 ° to 35 °.
9. plate as claimed in claim 8, wherein, the scope of the angulation of the bone fixed component locking in described the first fixed component receiver hole is from 0 ° to 45 °.
10. plate as claimed in claim 7, wherein, be the maximum angular skew of bone fixed component and the bevel angle sum of the conical nose of described bone fixed component locking in described the first fixed component receiver hole with the mutually tangent angle of arc of the proximal portion of each column.
11. plates as claimed in claim 10, wherein, be the poor of the maximum angular skew of bone fixed component that locks in described the first fixed component receiver hole and the bevel angle of the conical nose of described bone fixed component with the mutually tangent angle of arc of the extremity of each column.
12. plates as claimed in claim 1, wherein, column equidistantly distributes around the circumference of described the first fixed component receiver hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8428108P | 2008-07-29 | 2008-07-29 | |
| US61/084,281 | 2008-07-29 | ||
| PCT/US2008/081739 WO2009058969A1 (en) | 2007-10-30 | 2008-10-30 | Variable angle locked bone plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101842057A CN101842057A (en) | 2010-09-22 |
| CN101842057B true CN101842057B (en) | 2014-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880114463.3A Expired - Fee Related CN101842057B (en) | 2008-07-29 | 2008-10-30 | Variable angle locked bone plate |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2207491A1 (en) |
| JP (1) | JP2011529346A (en) |
| KR (1) | KR101520418B1 (en) |
| CN (1) | CN101842057B (en) |
| BR (1) | BRPI0818869A2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8518090B2 (en) | 2010-10-05 | 2013-08-27 | Acumed Llc | Fastener with serrated thread for attachment to a bone plate at a selectable angle |
| US11259851B2 (en) | 2003-08-26 | 2022-03-01 | DePuy Synthes Products, Inc. | Bone plate |
| US11291484B2 (en) | 2004-01-26 | 2022-04-05 | DePuy Synthes Products, Inc. | Highly-versatile variable-angle bone plate system |
| BR112015003783B1 (en) * | 2012-08-22 | 2021-06-01 | Synthes Gmbh | CONNECTION CONFIGURED FOR USE IN AN ANCHOR-IN-ANCHOR SYSTEM AND ANCHOR-IN- ANCHOR SYSTEM |
| US9510880B2 (en) | 2013-08-13 | 2016-12-06 | Zimmer, Inc. | Polyaxial locking mechanism |
| KR101629719B1 (en) * | 2015-11-17 | 2016-06-13 | 김정엽 | Assembly for bone plate having tension means and assembling method for same |
| US10820930B2 (en) * | 2016-09-08 | 2020-11-03 | DePuy Synthes Products, Inc. | Variable angle bone plate |
| US10624686B2 (en) * | 2016-09-08 | 2020-04-21 | DePuy Synthes Products, Inc. | Variable angel bone plate |
| US10426535B2 (en) | 2017-01-05 | 2019-10-01 | Stryker European Holdings I, Llc | Self-holding screw head |
| US11766282B2 (en) * | 2017-02-22 | 2023-09-26 | In2Bones Usa, Llc | Adjustable angle bone fixation assembly |
| KR102009785B1 (en) | 2017-12-28 | 2019-08-14 | 에이블 주식회사 | Bone joint poly axial plate |
| US10765461B2 (en) * | 2018-06-01 | 2020-09-08 | DePuy Synthes Products, Inc. | Variable angle bone fixation device |
| CN113924054A (en) * | 2019-06-07 | 2022-01-11 | 史密夫和内修有限公司 | Orthopedic implant with improved variable angle locking mechanism |
| KR20210062857A (en) | 2019-11-22 | 2021-06-01 | (주)올소테크 | Angle-adjustable bone fixation screw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343117A1 (en) * | 1993-12-17 | 1995-06-22 | Wolter Dietmar | Bone fixation system for Osteosynthesis |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858889B4 (en) * | 1998-12-19 | 2008-08-07 | Wolter, Dietmar, Prof. Dr.Med. | Fixation system for bones |
| 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 |
| EP1643923A4 (en) | 2003-06-20 | 2010-10-06 | Acumed Llc | Bone plates with intraoperatively tapped apertures |
| DE20321551U1 (en) * | 2003-08-26 | 2007-12-27 | Synthes Gmbh | bone plate |
| DE102004035546A1 (en) * | 2004-07-19 | 2006-02-16 | Wolter, Dietmar, Prof. Dr.Med. | Fixation system for bones and filling bodies for a bone fixation system |
-
2008
- 2008-10-30 EP EP08844195A patent/EP2207491A1/en not_active Ceased
- 2008-10-30 JP JP2010531334A patent/JP2011529346A/en active Pending
- 2008-10-30 KR KR1020107009701A patent/KR101520418B1/en not_active IP Right Cessation
- 2008-10-30 CN CN200880114463.3A patent/CN101842057B/en not_active Expired - Fee Related
- 2008-10-30 BR BRPI0818869 patent/BRPI0818869A2/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343117A1 (en) * | 1993-12-17 | 1995-06-22 | Wolter Dietmar | Bone fixation system for Osteosynthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0818869A2 (en) | 2015-05-05 |
| KR101520418B1 (en) | 2015-05-14 |
| EP2207491A1 (en) | 2010-07-21 |
| JP2011529346A (en) | 2011-12-08 |
| KR20110039512A (en) | 2011-04-19 |
| CN101842057A (en) | 2010-09-22 |
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