US20160166395A9 - Expandable Intervertebral Spacer and Method of Posterior Insertion Thereof - Google Patents
Expandable Intervertebral Spacer and Method of Posterior Insertion Thereof Download PDFInfo
- Publication number
- US20160166395A9 US20160166395A9 US13/763,012 US201313763012A US2016166395A9 US 20160166395 A9 US20160166395 A9 US 20160166395A9 US 201313763012 A US201313763012 A US 201313763012A US 2016166395 A9 US2016166395 A9 US 2016166395A9
- Authority
- US
- United States
- Prior art keywords
- arm
- gear
- axis
- arms
- spacer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
- A61F2002/30523—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts by means of meshing gear teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30556—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting thickness
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30579—Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. fixation devices
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
An expandable intervertebral spacer has a plurality of arms. The arms can be retracted or extended. The spacer has a width that is narrower than the width between the nerve roots near the posterior approach to an intervertebral space. Once inserted into the intervertebral space, the arms can be deployed. The deployed arms expand the height and width of the spacer. Once deployed, the spacer stabilizes two adjacent vertebrae. The arms are interconnected mechanically to deploy simultaneously.
Description
- This application claims priority to U.S. patent application Ser. No. 13/031,313 which claims priority to U.S. Provisional Application Ser. No. 61/307,659 filed on Feb. 24, 2010, which is incorporation herein in its entirety be reference.
- The present disclosure generally relates to intervertebral spacers and surgical methods for inserting intervertebral spacers, in particular, insertion via a posterior approach.
- The spine includes a series of joints routinely called motion segment units, which are the smallest component of the spine that exhibits kinematic behavior characteristic of the entire spine. The motion segment unit is capable of flexion, extension, lateral bending, and translation. The components of each motion segment unit include two adjacent vertebrae and their apophyseal joints, the intervertebral disc, and the connecting ligamentous tissue. Each component of the motion segment unit contributes to the mechanical stability of the joint.
- Components of a motion segment that move out of position or become damaged can lead to serious pain and may lead to further injury to other components of the spine. Depending upon the severity of the structural changes that occur, treatment may include fusion, discectomy, or laminectomy.
- Underlying causes of structural changes in the motion segment unit leading to instability include trauma, degeneration, aging, disease, surgery, and the like. Thus, rigid stabilization of one or more motion segment units may be an important element of a surgical procedure in certain cases (i.e., injuries, deformities, tumors, etc.), whereas it is a complementary element in others (i.e., fusion performed due to degeneration). The purpose of rigid stabilization is the immobilization of a motion segment unit.
-
FIG. 6 shows the anatomy of atypical vertebra 100. Thevertebra 100 includes avertebral body 101. Anintervertebral disc 130 is supported by thevertebral body 101. Theintervertebral disc 130 includes adisc annulus 131 surrounding nucleus pulposus 132. The vertebra includes number of processes: thetransverse process 102, superiorarticular process 103, inferiorarticular process 104, and thespinous process 105. Thetransverse process 102 includes ananterior tubercle 106 and aposterior tubercle 107. Thetransverse process 102 has aforamen transversium 108 formed therein. Thevertebra 100 has aforamen 109 formed therein. Thespinal cord 120 runs vertically in theforamen 109. Themeninges 121 surrounds thespinal cord 120. Within thespin cord 120,gray matter 122 is surrounded bywhite matter 123.Nerve roots 124 exit thespinal cord 120 and descend laterally. Thenerve roots 124 partially cover a posterior approach to thevertebral body 101. Each nerve root includes adorsal root 125 andventral root 126. - As mentioned above, current surgical techniques typically involve fusing one or more unstable motion segment units and possibly, the removal of ligaments, bone, disc, or combinations thereof included in the unstable motion segment unit or units prior to fusing. There are several disadvantages to fusion, however. For example, the fusing process results in a permanent or rigid internal fixation of all or part of the intervertebral joints and usually involves the implantation of metallic rods, plates, and the like for stabilization. In all cases, the systems are intended to rigidly immobilize the motion segment unit to promote fusion within that motion segment unit.
- When inserting a prosthesis into an intervertebral space via a posterior approach, the nerve roots can be damaged. These nerve roots from the adjacent vertebra are spaced apart at a distance narrower than the width of the intervertebral disc. The nerve roots block the posterior of the intervertebral space. To insert a prosthesis that is as wide as the intervertebral disc, the nerve roots are retracted.
- Vertically expandable intervertebral prostheses are known. Most of these devices employ mechanical means to expand their height. The device is placed into an intervertebral space and then expanded vertically to support the adjacent vertebrae.
- According to one aspect of the invention, an expandable intervertebral spacer for posterior approach to an intervertebral space without needing retraction of a nerve root is provided. The spacer has a body and at least one rotatable extension. The rotatable extension will be hereafter referred to as “arm”. The body has a width that is narrow enough to fit between the nerve roots at the posterior entrance to an intervertebral space. The arm or arms retract within the body when the spacer is being passed between the nerve roots. The arm or arms are then deployed once the body has passed between the nerve roots into the intervertebral space. The arm or arms increase the overall height and width of the spacer when the arm or arms are deployed. The overall height of the spacer is adjusted to stabilize the adjacent vertebrae relative to each other. The expanding overall width of the spacer provides a broader base upon which the vertebrae are stabilized.
- The spacer can include a plurality of arms. Deploying L-shaped arms from a superior and inferior surface of the body has been found by the inventors to be an advantageous way to provide a spacer that is narrow enough to fit between the nerve roots and that can expand after being inserted to be wide enough to provide a stabile base. Deploying the L-shaped arms also allows the spacer to expand enough vertically to fill the intervertebral space. Deploying some of the L-shaped arms by rotating them clockwise and others counterclockwise provides a useful way to expand the width of the spacer from both sides. Providing a spacer with arms that alternate between clockwise rotating arms and counterclockwise rotating arms along a depth (i.e. posterior to anterior) of the spacer has been found to provide a particularly stabile spacer. The number of arms along the depth of the spacer can be adjusted depending on the depth of the intervertebral space and the patient's anatomy. An implant with six pairs (i.e. superior and anterior) of arms has been found to provide a particularly stabile spacer.
- The arms are generally L-shaped. The arms can include a relatively short rotatable extensions connected to the spacer body that end with a relatively long extension that compliments the body surface when retracted. The arms have an axis of rotation. The axis of rotation is eccentric from the center of the body of the spacer. The arms have a cam extending from the axis of rotation. A contact surface for providing a stable abutment with the adjacent vertebra is connected to the cam. As the arm rotates on the eccentric axis, the contact surface extends beyond the perimeter (i.e. the circumference in a cylindrical embodiment) of the body.
- It has been found to be advantageous to configure the arm so that it is short enough to be fully retracted within the body when retracted and long enough to extend beyond the body when deployed. To create this configuration, a furthest distance on the arm from the axis of rotation of the arm should be greater than the shortest distance from the axis of rotation to the perimeter of the body in the plane of rotation of the arm. A furthest distance on the arm from the axis of rotation should be less than a furthest distance on the perimeter of the body in a given plane of rotation of the arm.
- The arms are generally L-shaped. The contact surfaces of the arms can be curved to complement the perimeter of the body of the spacer when the arms are retracted. By complementing the shape of the body, the arms when retracted provide a narrow cross section that can be passed between the posterior nerve roots of an intervertebral space.
- The spacer includes a means for deploying two or more arms simultaneously in the spacer in a same rotational direction. At least two arms may be configured advantageously to rotate in the same plane of rotation. A respective arm gear is formed around the axis of rotation of each arm. A central gear is intermeshed between both arm gears. When the central gear is rotated, then both arm gears rotate in order to deploy both arms. So that both arms rotate in the same direction (i.e. both clockwise or both counterclockwise), the arm gears are not directly intermeshed with each other.
- The spacer includes a means for deploying two arms simultaneously in the spacer in different rotational directions. A respective arm gear is formed around the axis of rotation of each arm. The arm gear of the first arm directly (i.e. without an intervening gear) engages the arm gear of the second arm. When deploying the arms, one of the arms will rotate clockwise while the other arm rotates counterclockwise. The first arm and the second arm can be found at different depths axially (i.e. posterior to anterior). The arm gear or gears of at least one of the arms can reach to a deeper depth to intermesh with the other arm gear. A central gear can be added to turn the first arm gear. The central gear can be configured not to enmesh directly with the second arm gear. The central gear does not enmesh directly with gears at every other depth because the rotations direction in which the arms rotate alternates at alternating depths.
- The two means for deploying the arms can be combined to produce a spacer in which two arms deploy simultaneously in one rotational direction at a given depth and two arms deploy simultaneously in an opposite direction at a different depth. A central gear is enmeshed with two arm gears of two arms at a given depth of the spacer. The arm gears at the first depth enmesh with arm gears of two additional arms at a different depth. When the central gear is turned, all four arms rotate to deploy or retract.
- The arms can be disposed depthwise (i.e. posterior to anterior) along the spacer in order to provide a spacer that is both compact in size in the retracted state and that is stabile in the deployed state. The arms can be disposed in pairs at given depths along the spacer. Both arms at a given depth rotate in the same direction (both clockwise or both counterclockwise). To maximize the length of the arm while allowing the arm to retract fully, the axes of rotation of each arm in the pair can be disposed on opposite sides of the central gear. The pairs of arms at adjacent depths can open in the opposite direction to the opening direction at the given depth. In other words, the arms alternate depthwise clockwise, then counterclockwise.
- The spacer is sized so that the overall width of the body with the arms retracted is narrower than a space between nerve roots blocking a posterior approach to an intervertebral space to be filled by the spacer. In this way, the spacer can be inserted into the intervertebral space by moving it between the nerve roots without needing to retract the nerve roots. Once the spacer is inserted into the intervertebral space, the arm or arms can be deployed to expand the overall width of the spacer to a width greater than the space between the nerve roots.
- The overall height of the spacer (i.e. the body plus arms) when the arms are displaced is configurable to match a height of the intervertebral space to be filled. The overall height is configured by controlling the amount that arms are deployed. The height may not exactly match the height of the intervertebral disc being replaced because the disc may be damaged or compressed. Because the actual desired height might be different than the actual height of the disc, the height approximates the desirable height of the intervertebral disc being replaced. When the arms are in the retracted position, the height of the spacer may be smaller than the height of the intervertebral space. Once the spacer is inserted in the intervertebral space, the arms can be deployed to expand the height. When the arms are deployed, the arms operate to support the adjacent vertebrae.
- When deployed, the spacer can have an overall width that approximates the width of the body of the vertebrae being stabilized. As discussed, when the arms are retracted the overall width of the spacer should be less than the space between the nerve roots along the posterior approach to the intervertebral space. However, once the spacer is inserted into the intervertebral space, the arms can be deployed. The arms not only expand vertically as discussed previously. The arms can spread horizontally to approximate the width of the body of the vertebrae being stabilized. By being wider, a more stabile connection is formed between the implant and the vertebrae.
- The depth (i.e. posterior to anterior length) of the space can approximate a depth of the intervertebral disc to be replaced. By having a depth that matches the depth of the disc being replaced, a stable connection between the spacer and the adjacent vertebrae can be established. In spacers having a longer depth, the number of arms along the length can be increased. In spacers having a shorter depth, the number of arms along the length can be decreased.
- The body of the expandable intervertebral spacer can have a slot, in particular, a superior slot and/or an inferior slot formed in the body. The arms can extend from within the body through the slots to outside the body. The mechanism such as the parts can be contained by the body yet the arms can still extend through the slots.
- A method of using the spacer for stabilizing a first vertebra relative to a second vertebra via a posterior approach has the advantage that the nerve roots along with posterior of the intervertebral space do not need to be retracted. A first step of the method involves forming an incision to a posterior of an intervertebral space. The next step involves inserting an expandable intervertebral spacer in a retracted position into the intervertebral space. The intervertebral spacer has a height and width less than a distance between nerve root stems at the posterior of the intervertebral space. The next step is expanding a width and height of the expandable intervertebral spacer to a width wider than the distance between the nerve root stems and/or a height approximating a height of an intervertebral disc being replaced.
- The spacer can be implanted endoscopically. That is, an endoscopic tube can be inserted in the incision to allow the spacer to be moved from outside the patient to the intervertebral space via the endoscopic tube.
-
FIG. 1A is a diagrammatic right side view of an expandable intervertebral spacer and insertion tool according to the invention where the expandable intervertebral spacer is in a retracted position. -
FIG. 1B is a front view of the expandable intervertebral spacer shown inFIG. 1A . -
FIG. 2A is right side view of the expandable intervertebral spacer shown inFIG. 1A with the expandable intervertebral spacer in a first state of expansion. -
FIG. 2B is front side view of the expandable intervertebral spacer shown inFIG. 2A . -
FIG. 2C is a front sectional view of the expandable intervertebral spacer shown inFIG. 2A taken along line B-B inFIG. 2A . -
FIG. 3A is right side view of the expandable intervertebral spacer shown inFIG. 1A with the expandable intervertebral spacer in a second state of expansion. -
FIG. 3B is a front side view of the expandable intervertebral spacer shown inFIG. 3A . -
FIG. 3C is a front sectional view of the expandable intervertebral spacer shown inFIG. 3A taken along line B-B inFIG. 3A . -
FIG. 4A is a right side view of the expandable intervertebral spacer shown inFIG. 1A with the expandable intervertebral spacer in a third state of expansion. -
FIG. 4B is a front side view of the expandable intervertebral spacer shown inFIG. 4A . -
FIG. 4C is front section view of the expandable intervertebral spacer shown inFIG. 4A taken along line B-B inFIG. 4A . -
FIG. 4D is a front section view of the expandable intervertebral spacer shown inFIG. 4A taken along line A-A inFIG. 4A . -
FIG. 4E is rear side view of the expandable intervertebral spacer shown inFIG. 4A . -
FIG. 4F is a top view of the expandable intervertebral spacer shown inFIG. 4A . -
FIG. 5 is a partial perspective exploded view of the intervertebral spacer shown inFIGS. 1-4 . -
FIG. 6 is a diagrammatic top sectional view of a vertebra. - Referring now to the figures of the drawing in detail, there is seen an expandable
intervertebral spacer 1. The expandableintervertebral spacer 1 is typically inserted in a retracted state as shown inFIGS. 1A-1B into an intervertebral space. Once inserted into the intervertebral space, a width w and height h of the expandableintervertebral spacer 1 can be expanded as shown inFIGS. 2A-4F . The construction and operation of the expandableintervertebral spacer 1 are detailed below. - The expandable
intervertebral spacer 1 includes acylindrical body 2. Thebody 2 has aright side surface 4 and aleft side surface 5. Asuperior slot 3 is formed in thebody 2 at a superior position on the wall of thebody 2. Aninferior slot 8 is formed in thebody 2 at an inferior position on the wall of thebody 2.Arms superior slots FIG. 4D , the left and right side surfaces 4 and 5 havefins cylindrical body 2 to strengthen thebody 2, to key or alignarms arms - In an embodiment, four
arm assemblies body 2. Thearm assemblies FIG. 5 . Eacharm assembly rotation 72. Eacharm assembly rotation 72. Anarm gear 13 is formed about each axis ofrotation 72 on the counterclockwise extendingarm assemblies 71. Anarm gear 23 is formed about each axis ofrotation 72 on the clockwise extendingarm assemblies 70. Threecounterclockwise arms 10 are included in eachcounterclockwise arm assembly 71. Eachcounterclockwise arm 10 has acam 11 extending from thearm gear 13. Acontact surface 12 is formed on eachcam 11 at an end of thecam 11 opposing thearm gear 13. Likewise, threeclockwise arms 20 are included in eachclockwise arm assembly 70. Each of theclockwise arms 20 has acam 21 extending from thearm gear 23. Acontact surface 22 is formed on eachcam 21 at an end of the cam opposing thearm gear 23. Thearms 10 of a counterclockwise extendingarm assembly 71 are spaced to intermesh with the spacedarms 20 of a clockwise extendingarm assembly 70. - The
counterclockwise arm assembly 71 intermeshes with theclockwise arm assembly 72. Thearms 20 of the clockwise extendingarm assembly 70 have a width measured from a posterior position to an anterior point. The width of thearms 20 is less than the spacing between thearms 10 on the counterclockwise extendingarm assembly 71. Preferably, the width of thearms 20 is nearly as wide as the spacing between thearms 10 on the counterclockwise extendingarm assembly 71. Thearms 10 of the counterclockwise extendingarm assembly 71 have a width measured from a posterior position to an anterior point. The width of thearm 10 is no greater than the spacing between thearms 20 on the clockwise extendingarm assembly 70. Preferably, the width of thearms 10 is nearly as wide as the spacing between thearms 20 on the clockwise extendingarm assembly 70. - A
central axle 31 extends lengthwise inside thebody 2. Thecentral axle 31 has threecentral gears 30 formed around thecentral axle 31 at different depths of thecentral axle 31. In the embodiment shown, thecentral gears 30 are at depths to intermesh with arm gears 13 of thecounterclockwise arm 10; seeFIG. 4D . Thecentral axle 31 has no gears at depths where thecentral gears 30 would intermesh with arm gears 23 of theclockwise arm 20; seeFIGS. 2C, 3C , and 4C. - The
arm gear 13 of thecounterclockwise arm 10 engages thearm gear 23 of theclockwise arm 20 that extends through thesame slot FIGS. 2C, 3C, and 4C show the arm gears 13 engaged with the arm gears 23. - As shown in
FIG. 4D , when thecentral axle 31 is rotated, thecentral gear 30 rotates.Central gear 30 turns thearm gear 13. As thearm gear 13 turns, thecounterclockwise arm 10 moves (i.e. deploys or retracts). As shown inFIGS. 2C, 3C, and 4C , as thearm gear 13 turns, theclockwise arm 20 turns in an opposite direction as thecounterclockwise arm 10. - In an alternate embodiment, which is not shown in the figures, the
central gears 30 intermesh with the arm gears 23 of theclockwise arm 20 but not the arm gears 13 ofcounterclockwise arm 10. - As shown in
FIGS. 2C, 3C, and 4C , thecentral gears 30 intermesh with the arm gears 13. As a result, when thecentral axle 31 is turned clockwise, the counterclockwise arm assemblies rotate counterclockwise. As the counterclockwise arm assemblies rotate clockwise, thearms 10, extend outwards, through theslots spacer 1. - The axes of
rotation 72 of thecounterclockwise arms 10 and theclockwise arms 20 are eccentric from thecentral axle 31. Thearms arms - The
arms cams cams cams - The
arms body 2.FIGS. 1A and 1B show thearms FIGS. 2A, 2B, and 2C show thearms FIGS. 3A, 3B, and 3C show thearms FIGS. 4A, 4B, 4C, 4D, 4E, and 4F show thearms arm body 20 - To be able to fully retract against the
body 2, thearms respective axis 72 to a furthest point on thearm axle 72 to the furthest edge of thebody 2. The width of the arm, vis-à-vis the length of thecam body 2 when thearm - To be able to extend, the
arms body 2. More particularly, thearms 10 and 20 a furthest distance on the arm from itsrespective axis 72 is longer than the shortest distance from theaxis 72 to the nearest edge of thebody 2. - As seen in
FIG. 1B , thespacer 1 has a circular cross section.FIG. 1A shows that thespacer 1 has a generally cylindrical shape when in a retracted position. To aid in insertion, thedistal end 40 has a frustoconical shape. Embodiments with other inclined, ramped, or sloping distal surfaces are also possible. -
FIG. 1B shows a front view of thespacer 1 with thearms FIG. 2B shows thespacer 1 with thearms FIG. 2B , thespacer 1 has a height h2 and width w2. The height and width are greater inFIG. 2B thanFIG. 1B (i.e. h2>h1 and w2>w1).FIG. 3B show thespacer 1 with thearms FIG. 1B (i.e. h3>h1 and w3>w1). In the medium deployed position, the height h3 is greater than the height in slightly deployed position h2 and the width w3 is narrower than the width in the slightly deployed position w2 (i.e. h3>h2 and w3<w2).FIG. 4B shows thespacer 1 with thearms -
FIGS. 1A, 2A, 3A, and 4A show side views of thespacer 1. As thearms superior slot 3 andinferior slot 8, which are both formed in thebody 2. Along the length of thespacer 1, thearms 10 alternate witharms 20. -
FIG. 4E shows theproximal end 50 thespacer 1.Sockets proximal end 50 to aid in attaching atool 60 during insertion and/or removal of thespacer 1. Areceptacle 51 is formed in theproximal end 50. Atool 60 is insertable in thereceptacle 51 to operate thecentral gear 30 in order to retract or deploy thearms -
FIG. 1A shows atool 60 attached to thespacer 1. Thetool 60 has aconnector 62 on its distal end. Theconnector 62 inserts in thesockets proximal end 50 of thespacer 1. Theconnector 62 holds thespacer 1 in place rotationally with respect to thetool 60. Thetool 60 allows thespacer 1 to be inserted via an endoscopic tube leading from outside the patient to the intervertebral space that is to be filled. Aknob 61 on the proximal end of thetool 60 can be rotated relative to the rest of thetool 60 to turn thecentral gear 30 of thespacer 1. Thecentral gear 30 is accessed through theport 51 and engages thetool connector 62 through a mating engagement, such as a hex connection or the like. - The
spacer 1 is sized to have a width w1 in a retracted position that is narrower than the space between nerve roots stems extending near the posterior entrance to an intervertebral space. Because thespacer 1 is narrower than the space between the nerve roots, the nerve roots do not need to be retracted, displaced, or disturbed during insertion. Once in the intervertebral space, thecentral gear 30 is operated to deploy thearms spacer 1. The deployedarms spacer 1 is adjusted until the overall height h of thespacer 1 fills the height of the invertebral space and properly supports the adjacent vertebrae. - A method of using the
spacer 1 is the following. First, an incision is made in a patient to the posterior of the intervertebral space that is to be stabilized. Next, an endoscopic tube is inserted in the incision from outside the patient to the intervertebral space. Aspacer 1 is seated on atool 60. The spacer/tool assembly is then inserted via the endoscopic tube to the intervertebral space. Thespacer 1 is inserted between the nerve roots near the intervertebral space while thespacer 1 is in a retracted position. Theknob 61 on the proximal end of thetool 60 is rotated to turn thecentral gear 30 in thespacer 1 relative to thebody 2. Thebody 2 remains stationary relative to thetool 61 during relative movement of thearms central gear 30 is rotated counterclockwise while looking from the distal position (i.e.FIG. 4D ), thecounterclockwise arms 10 rotate clockwise to deploy. In turn, the arm gears 13 of thecounterclockwise arms 10 engage the arm gears 23 of theclockwise arms 20 and cause theclockwise arm 20 to rotate counterclockwise to deploy. In this way, turning thecentral gear 30 causes both sets ofarms arms spacer 1 has an overall height h equal to the intervertebral space being filled and the adjacent vertebrae are stabile. Thetool 60 is separated from thespacer 1 and removed via the endoscopic tube from the patient. In embodiments, that are not shown, thespacer 1 is further stabilized by screws and plates that secure thespacer 1 to adjacent vertebrae. - The
spacer 1 can be removed by performing the following steps. An incision is made to a proximal side of the intervertebral space where thespacer 1 is installed. An endoscopic tube or cannula is delivered via the incision to the intervertebral space. Stabilizers such as screws and plates that connect thespacer 1 to anatomy are disconnected. Thecentral gear 30 is turned clockwise (as seen by looking from the distal view inFIG. 4D ). Thearms body 2. Thespacer 1 is passed between the nerve roots on the proximal side of the intervertebral space while thespacer 1 is in the retracted position. A replacement stabilizer may then be inserted into the intervertebral space. - While it is apparent that the invention disclosed herein is well calculated to fulfill the objects stated above, it will be appreciated that numerous modifications and embodiments may be devised by those skilled in the art.
- All references cited herein are expressly incorporated by reference in their entirety. In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. There are many different features to the present invention and it is contemplated that these features may be used together or separately. Thus, the invention should not be limited to any particular combination of features or to a particular application of the invention. Further, it should be understood that variations and modifications within the spirit and scope of the invention might occur to those skilled in the art to which the invention pertains. Accordingly, all expedient modifications readily attainable by one versed in the art from the disclosure set forth herein that are within the scope and spirit of the present invention are to be included as further embodiments of the present invention.
Claims (17)
1. An expandable intervertebral implant comprising:
a body having a height and a width and configured for being positioned between adjacent vertebral bodies and in an intervertebral disc space; and
an arm having an axis of rotation, said arm having a contact surface, a distance from said axis to a furthest distance on said contact surface being greater than a distance from said axis to a nearest edge of said body, said distance from said axis to a furthest distance on said contact surface being no greater than a distance from said axis to a furthest edge of said body, said arm being deployable, an overall height and an overall width of said body and said arm when deployed being greater than said height and said with of said body.
2. The expandable intervertebral implant according to claim 1 , further comprising:
a further arm having an axis of rotation disposed within said body, said further arm having a contact surface, a distance from said axis to a furthest distance on said contact surface being greater than a distance from said axis to a nearest edge of said body, said distance from said axis to a furthest distance on said contact surface being no greater than a distance from said axis to a furthest edge of said body.
3. The expandable intervertebral implant according to claim 2 , wherein:
said arm has an arm gear encircling said axis of rotation of said arm;
said further arm has an arm gear encircling said axis of rotation of said further arm; and
a central gear is intermeshed with said arm gear of said arm and is intermeshed with said arm gear of said further arm.
4. The expandable intervertebral implant according to claim 3 , wherein said arm gear of said arm and said arm gear of said further arm do not directly intermesh.
5. The expandable intervertebral implant according to claim 2 , wherein:
said arm rotates in a given direction; and
said further arm rotates in said given direction.
6. The expandable intervertebral implant according to claim 2 , wherein:
said arm rotates in a first given direction; and
said further arm rotates in a second given direction, said second given direction being opposite to said first given direction.
7. The expandable intervertebral implant according to claim 2 , wherein:
said arm has an arm gear encircling said axis of rotation of said arm;
said further arm has an arm gear encircling said axis of rotation of said further arm; and
said arm gear of said arm engaging said arm gear of said further arm.
8. The expandable intervertebral implant according to claim 7 , wherein:
said further arm is at a different depth axially than said arm; and
said arm gear extends axially at least to said different depth of said further arm.
9. The expandable intervertebral implant according to claim 8 , further comprising a central axle having a central gear engaged with said arm gear of said arm, said central axle extending axially at least to said different depth of said further arm, said central axle not engaging said arm gear of said further arm.
10. The expandable intervertebral implant according to claim 1 , wherein said body is narrower than a space between nerve roots in an intervertebral space to be filled when said arm is retracted.
11. The expandable intervertebral implant according to claim 1 , wherein said body has a height and width approximating an intervertebral disc that is to be replaced when said arm is deployed.
12. The expandable intervertebral implant according to claim 1 , wherein said axis of rotation of said arm is disposed within said body.
13. The expandable intervertebral spacer according to claim 1 , wherein:
said arm includes a cam extending from said axis of rotation; and
said contact surface is connected to said cam.
14. An expandable intervertebral implant comprising:
a body having a height and a width and having a left lateral slot formed therein and a right lateral slot formed therein, said height and said width being narrower than a space between nerve roots in an intervertebral space to be filled, said body having a depth approximating a depth of the intervertebral space;
a first arm assembly with three curved arms, each of said arms being connected by an axial spine, a first arm gear being formed around said axial spine;
a second arm assembly with three curved arms, each of said arms being connected by the axial spine, a second arm gear being formed around said axial spine;
said arms of said first arm assembly, said second arm assembly being configured to deploy to a height and width greater than said body when said central gear is operated and said implant having a height and width approximating an intervertebral disc that is to be replaced when said arm assemblies are deployed;
15. A method for stabilizing a first vertebra relative to a second vertebra which comprises:
inserting an expandable intervertebral spacer in a retracted position into the intervertebral space;
expanding the expandable intervertebral spacer; and
wherein the expandable intervertebral spacer comprises a first arm having an axis of rotation and a second arm having an axis of rotation, and a central axle having a central gear engaged with the arm gear of the first arm.
16. The method according to claim 15 , which further comprises delivering the expandable intervertebral spacer to the posterior of the intervertebral space via an endoscopic tube.
17. The method according to claim 16 , which further comprises:
providing an expandable intervertebral spacer with a body having a height and a width and an arm, said arm having a contact surface, said arm having an arm gear encircling said axis of rotation of said arm, and a central gear being enmeshed with said arm gear; and
rotating said central gear to turn said arm gear in order to move said contact surface at least partially outside of said body.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/763,012 US9913726B2 (en) | 2010-02-24 | 2013-02-08 | Expandable intervertebral spacer and method of posterior insertion thereof |
US15/884,493 US10864086B2 (en) | 2010-02-24 | 2018-01-31 | Expandable intervertebral spacer and method of posterior insertion thereof |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30765910P | 2010-02-24 | 2010-02-24 | |
US13/031,313 US8394145B2 (en) | 2010-02-24 | 2011-02-21 | Expandable intervertebral spacer and method of posterior insertion thereof |
US13/763,012 US9913726B2 (en) | 2010-02-24 | 2013-02-08 | Expandable intervertebral spacer and method of posterior insertion thereof |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/031,313 Continuation US8394145B2 (en) | 2010-02-24 | 2011-02-21 | Expandable intervertebral spacer and method of posterior insertion thereof |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/884,493 Continuation US10864086B2 (en) | 2010-02-24 | 2018-01-31 | Expandable intervertebral spacer and method of posterior insertion thereof |
Publications (3)
Publication Number | Publication Date |
---|---|
US20140228956A1 US20140228956A1 (en) | 2014-08-14 |
US20160166395A9 true US20160166395A9 (en) | 2016-06-16 |
US9913726B2 US9913726B2 (en) | 2018-03-13 |
Family
ID=51297998
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/763,012 Active 2032-04-05 US9913726B2 (en) | 2010-02-24 | 2013-02-08 | Expandable intervertebral spacer and method of posterior insertion thereof |
US15/884,493 Active 2031-04-27 US10864086B2 (en) | 2010-02-24 | 2018-01-31 | Expandable intervertebral spacer and method of posterior insertion thereof |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/884,493 Active 2031-04-27 US10864086B2 (en) | 2010-02-24 | 2018-01-31 | Expandable intervertebral spacer and method of posterior insertion thereof |
Country Status (1)
Country | Link |
---|---|
US (2) | US9913726B2 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9707100B2 (en) | 2015-06-25 | 2017-07-18 | Institute for Musculoskeletal Science and Education, Ltd. | Interbody fusion device and system for implantation |
US10580725B2 (en) | 2017-05-25 | 2020-03-03 | Corning Incorporated | Articles having vias with geometry attributes and methods for fabricating the same |
US10756003B2 (en) | 2016-06-29 | 2020-08-25 | Corning Incorporated | Inorganic wafer having through-holes attached to semiconductor wafer |
US10794679B2 (en) | 2016-06-29 | 2020-10-06 | Corning Incorporated | Method and system for measuring geometric parameters of through holes |
US11078112B2 (en) | 2017-05-25 | 2021-08-03 | Corning Incorporated | Silica-containing substrates with vias having an axially variable sidewall taper and methods for forming the same |
US11114309B2 (en) | 2016-06-01 | 2021-09-07 | Corning Incorporated | Articles and methods of forming vias in substrates |
US11152294B2 (en) | 2018-04-09 | 2021-10-19 | Corning Incorporated | Hermetic metallized via with improved reliability |
US11554984B2 (en) | 2018-02-22 | 2023-01-17 | Corning Incorporated | Alkali-free borosilicate glasses with low post-HF etch roughness |
US11760682B2 (en) | 2019-02-21 | 2023-09-19 | Corning Incorporated | Glass or glass ceramic articles with copper-metallized through holes and processes for making the same |
US11872143B2 (en) | 2016-10-25 | 2024-01-16 | Camber Spine Technologies, LLC | Spinal fusion implant |
US11877935B2 (en) | 2016-10-18 | 2024-01-23 | Camber Spine Technologies, LLC | Implant with deployable blades |
US11972993B2 (en) | 2021-05-14 | 2024-04-30 | Corning Incorporated | Silica-containing substrates with vias having an axially variable sidewall taper and methods for forming the same |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9913726B2 (en) * | 2010-02-24 | 2018-03-13 | Globus Medical, Inc. | Expandable intervertebral spacer and method of posterior insertion thereof |
US20180049754A1 (en) * | 2015-03-13 | 2018-02-22 | Redemed S.R.L. | Intervertebral prosthesis, apparatus for implanting intervertebral prostheses and surgical method for implanting intervertebral prostheses, particularly for percutaneous mini-invasive surgery procedures |
JP6768001B2 (en) | 2015-04-29 | 2020-10-14 | インスティテュート フォー マスキュロスケレタル サイエンス アンド エジュケイション,リミテッド | Coiled implants and systems and how to make them |
US10492921B2 (en) * | 2015-04-29 | 2019-12-03 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with arched bone contacting elements |
US10449051B2 (en) | 2015-04-29 | 2019-10-22 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with curved bone contacting elements |
FR3058043B1 (en) * | 2016-10-27 | 2020-11-13 | Ldr Medical | EXPANDABLE INTERSOMATIC CAGE |
US10512549B2 (en) | 2017-03-13 | 2019-12-24 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with structural members arranged around a ring |
US10744001B2 (en) | 2017-11-21 | 2020-08-18 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with improved bone contact |
US10940015B2 (en) | 2017-11-21 | 2021-03-09 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with improved flow characteristics |
US11247956B2 (en) | 2018-04-20 | 2022-02-15 | Wisconsin Alumni Research Foundation | Catalytic production of 1,2,5,6-hexanetetrol from levoglucosenone |
US10722380B1 (en) * | 2019-02-04 | 2020-07-28 | Bret Michael Berry | Laterally expandable spinal implant |
US11382761B2 (en) | 2020-04-11 | 2022-07-12 | Neurostructures, Inc. | Expandable interbody spacer |
US11304817B2 (en) | 2020-06-05 | 2022-04-19 | Neurostructures, Inc. | Expandable interbody spacer |
US11717419B2 (en) | 2020-12-10 | 2023-08-08 | Neurostructures, Inc. | Expandable interbody spacer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080215152A1 (en) * | 2005-06-07 | 2008-09-04 | Flex Partners, Inc. | System and Method for Restoration of Nutrient Flow to Nucleus Pulposa |
Family Cites Families (129)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1146301A (en) | 1980-06-13 | 1983-05-17 | J. David Kuntz | Intervertebral disc prosthesis |
US4599086A (en) | 1985-06-07 | 1986-07-08 | Doty James R | Spine stabilization device and method |
SU1424826A1 (en) | 1986-05-22 | 1988-09-23 | Белорусский научно-исследовательский институт травматологии и ортопедии | Fixative for spinal column |
GB8620937D0 (en) | 1986-08-29 | 1986-10-08 | Shepperd J A N | Spinal implant |
US4863477A (en) | 1987-05-12 | 1989-09-05 | Monson Gary L | Synthetic intervertebral disc prosthesis |
CA1333209C (en) | 1988-06-28 | 1994-11-29 | Gary Karlin Michelson | Artificial spinal fusion implants |
DE4012622C1 (en) | 1990-04-20 | 1991-07-18 | Eska Medical Luebeck Medizintechnik Gmbh & Co, 2400 Luebeck, De | Two-part metal vertebra implant - has parts locked by two toothed racks, pre-stressed by elastic cushion between both implant parts |
AT394307B (en) | 1990-07-24 | 1992-03-10 | Mohamed Ibrahim Dr Rasheed | SPINE PROSTHESIS |
US5390683A (en) | 1991-02-22 | 1995-02-21 | Pisharodi; Madhavan | Spinal implantation methods utilizing a middle expandable implant |
US5123926A (en) | 1991-02-22 | 1992-06-23 | Madhavan Pisharodi | Artificial spinal prosthesis |
DE4128332A1 (en) | 1991-08-27 | 1993-03-04 | Man Ceramics Gmbh | SPINE BONE REPLACEMENT |
US5290312A (en) | 1991-09-03 | 1994-03-01 | Alphatec | Artificial vertebral body |
FR2692952B1 (en) | 1992-06-25 | 1996-04-05 | Psi | IMPROVED SHOCK ABSORBER WITH MOVEMENT LIMIT. |
US5676701A (en) | 1993-01-14 | 1997-10-14 | Smith & Nephew, Inc. | Low wear artificial spinal disc |
ES2161725T3 (en) | 1993-02-09 | 2001-12-16 | Depuy Acromed Inc | INTERVERTEBRAL DISC. |
US5645596A (en) | 1993-07-07 | 1997-07-08 | Asahi Kogaku Kogyo Kabushiki Kaisha | Ceramic vertebrae prosthesis |
DE4327054C1 (en) | 1993-08-12 | 1995-04-13 | Schaefer Micomed Gmbh | Ventral intervertebral implant |
FR2715293B1 (en) | 1994-01-26 | 1996-03-22 | Biomat | Vertebral interbody fusion cage. |
AU2212695A (en) | 1994-03-23 | 1995-10-09 | Schnorrenberg Chirurgiemechanik Gmbh | Positioning and support device for the spinal column |
DE4423257C2 (en) | 1994-07-02 | 2001-07-12 | Ulrich Heinrich | Implant to be inserted between the vertebral body of the spine as a placeholder |
US5665122A (en) | 1995-01-31 | 1997-09-09 | Kambin; Parviz | Expandable intervertebral cage and surgical method |
US5653763A (en) | 1996-03-29 | 1997-08-05 | Fastenetix, L.L.C. | Intervertebral space shape conforming cage device |
US6039761A (en) | 1997-02-12 | 2000-03-21 | Li Medical Technologies, Inc. | Intervertebral spacer and tool and method for emplacement thereof |
US6641614B1 (en) | 1997-05-01 | 2003-11-04 | Spinal Concepts, Inc. | Multi-variable-height fusion device |
US6045579A (en) | 1997-05-01 | 2000-04-04 | Spinal Concepts, Inc. | Adjustable height fusion device |
US6258125B1 (en) | 1998-08-03 | 2001-07-10 | Synthes (U.S.A.) | Intervertebral allograft spacer |
DE19807236C2 (en) | 1998-02-20 | 2000-06-21 | Biedermann Motech Gmbh | Intervertebral implant |
US6126689A (en) | 1998-06-15 | 2000-10-03 | Expanding Concepts, L.L.C. | Collapsible and expandable interbody fusion device |
US6099531A (en) | 1998-08-20 | 2000-08-08 | Bonutti; Peter M. | Changing relationship between bones |
FR2782632B1 (en) | 1998-08-28 | 2000-12-29 | Materiel Orthopedique En Abreg | EXPANSIBLE INTERSOMATIC FUSION CAGE |
EP1185221B1 (en) | 1999-06-04 | 2005-03-23 | SDGI Holdings, Inc. | Artificial disc implant |
US6419705B1 (en) | 1999-06-23 | 2002-07-16 | Sulzer Spine-Tech Inc. | Expandable fusion device and method |
WO2002009626A1 (en) | 1999-07-26 | 2002-02-07 | Advanced Prosthetic Technologies, Inc. | Improved spinal surgical prosthesis |
US7918888B2 (en) | 1999-10-13 | 2011-04-05 | Hamada James S | Spinal fusion instrumentation, implant and method |
FR2799638B1 (en) | 1999-10-14 | 2002-08-16 | Fred Zacouto | FIXATOR AND VERTEBRAL JOINT |
US8535378B2 (en) | 2004-05-10 | 2013-09-17 | Roger P. Jackson | Vertebral interbody spacer |
US6666891B2 (en) | 2000-11-13 | 2003-12-23 | Frank H. Boehm, Jr. | Device and method for lumbar interbody fusion |
DE10065232C2 (en) | 2000-12-27 | 2002-11-14 | Ulrich Gmbh & Co Kg | Implant for insertion between the vertebral body and surgical instrument for handling the implant |
AU2002244116A1 (en) | 2001-02-16 | 2002-09-04 | Sulzer Spine-Tech Inc. | Bone implants and methods |
US6849093B2 (en) | 2001-03-09 | 2005-02-01 | Gary K. Michelson | Expansion constraining member adapted for use with an expandable interbody spinal fusion implant and method for use thereof |
US7128760B2 (en) | 2001-03-27 | 2006-10-31 | Warsaw Orthopedic, Inc. | Radially expanding interbody spinal fusion implants, instrumentation, and methods of insertion |
DE10138079B4 (en) | 2001-08-03 | 2004-02-12 | Biedermann Motech Gmbh | Placeholder with variable axial length |
US6648917B2 (en) | 2001-10-17 | 2003-11-18 | Medicinelodge, Inc. | Adjustable bone fusion implant and method |
JP2005516669A (en) | 2002-02-07 | 2005-06-09 | イービーアイ,エル.ピー. | Anterior spinal implant |
US7070598B2 (en) | 2002-06-25 | 2006-07-04 | Sdgi Holdings, Inc. | Minimally invasive expanding spacer and method |
US20040087947A1 (en) | 2002-08-28 | 2004-05-06 | Roy Lim | Minimally invasive expanding spacer and method |
US7018415B1 (en) | 2002-09-23 | 2006-03-28 | Sdgi Holdings, Inc. | Expandable spinal fusion device and methods of promoting spinal fusion |
FR2846550B1 (en) | 2002-11-05 | 2006-01-13 | Ldr Medical | INTERVERTEBRAL DISC PROSTHESIS |
WO2004054475A1 (en) | 2002-12-17 | 2004-07-01 | Mathys Medizinaltechnik Ag | Intervertebral implant with joint parts mounted on roller bodies |
US7828849B2 (en) | 2003-02-03 | 2010-11-09 | Warsaw Orthopedic, Inc. | Expanding interbody implant and articulating inserter and method |
WO2004080356A2 (en) * | 2003-03-07 | 2004-09-23 | Smart Disc, Inc. | Spinal implant with securement spikes |
KR101129769B1 (en) | 2003-04-28 | 2012-03-23 | 신세스 게엠바하 | Intervertebral implant |
ATE480203T1 (en) | 2003-05-27 | 2010-09-15 | Spinalmotion Inc | INTERVERTEBRAL DISC PROSTHESIS FOR INTERVERTEBRAL INSERTION |
US7909869B2 (en) | 2003-08-05 | 2011-03-22 | Flexuspine, Inc. | Artificial spinal unit assemblies |
US7316714B2 (en) | 2003-08-05 | 2008-01-08 | Flexuspine, Inc. | Artificial functional spinal unit assemblies |
US7753958B2 (en) | 2003-08-05 | 2010-07-13 | Gordon Charles R | Expandable intervertebral implant |
US20060229729A1 (en) | 2003-08-05 | 2006-10-12 | Gordon Charles R | Expandable intervertebral implant for use with instrument |
US7204853B2 (en) | 2003-08-05 | 2007-04-17 | Flexuspine, Inc. | Artificial functional spinal unit assemblies |
US7217293B2 (en) | 2003-11-21 | 2007-05-15 | Warsaw Orthopedic, Inc. | Expandable spinal implant |
US7217291B2 (en) | 2003-12-08 | 2007-05-15 | St. Francis Medical Technologies, Inc. | System and method for replacing degenerated spinal disks |
US20050171541A1 (en) | 2003-12-19 | 2005-08-04 | Boehm Frank H.Jr. | Device for lumbar surgery |
US7850733B2 (en) | 2004-02-10 | 2010-12-14 | Atlas Spine, Inc. | PLIF opposing wedge ramp |
US8021428B2 (en) | 2004-06-30 | 2011-09-20 | Depuy Spine, Inc. | Ceramic disc prosthesis |
WO2006026425A2 (en) | 2004-08-25 | 2006-03-09 | Spine Wave, Inc. | Expandable interbody fusion device |
US7799081B2 (en) | 2004-09-14 | 2010-09-21 | Aeolin, Llc | System and method for spinal fusion |
US20060069436A1 (en) * | 2004-09-30 | 2006-03-30 | Depuy Spine, Inc. | Trial disk implant |
KR20070104337A (en) | 2004-10-25 | 2007-10-25 | 알파스파인, 아이엔씨. | Expandable intervertebral spacer method and apparatus |
US20060095136A1 (en) * | 2004-11-03 | 2006-05-04 | Mcluen Design, Inc. | Bone fusion device |
US20060122701A1 (en) | 2004-11-23 | 2006-06-08 | Kiester P D | Posterior lumbar interbody fusion expandable cage with lordosis and method of deploying the same |
US8057548B2 (en) | 2005-03-16 | 2011-11-15 | Dennis Lee Abernathie | Spinal fusion cage, method of design, and method of use |
US7780732B2 (en) | 2005-03-16 | 2010-08-24 | Dennis Lee Abernathie | Spinal fusion cage and method of use |
US7655043B2 (en) | 2005-04-29 | 2010-02-02 | Warsaw Orthopedic, Inc. | Expandable spinal implant and associated instrumentation |
WO2007009107A2 (en) | 2005-07-14 | 2007-01-18 | Stout Medical Group, P.L. | Expandable support device and method of use |
WO2007024990A2 (en) | 2005-08-23 | 2007-03-01 | Kim Richard C | Expandable implant device with interchangeable spacer |
US20070050032A1 (en) | 2005-09-01 | 2007-03-01 | Spinal Kinetics, Inc. | Prosthetic intervertebral discs |
US9028550B2 (en) | 2005-09-26 | 2015-05-12 | Coalign Innovations, Inc. | Selectively expanding spine cage with enhanced bone graft infusion |
US8070813B2 (en) | 2005-09-26 | 2011-12-06 | Coalign Innovations, Inc. | Selectively expanding spine cage, hydraulically controllable in three dimensions for vertebral body replacement |
US7985256B2 (en) | 2005-09-26 | 2011-07-26 | Coalign Innovations, Inc. | Selectively expanding spine cage, hydraulically controllable in three dimensions for enhanced spinal fusion |
US7674294B2 (en) | 2005-12-01 | 2010-03-09 | Warsaw Orthopedic, Inc. | End device for a vertebral implant |
WO2007076377A2 (en) | 2005-12-19 | 2007-07-05 | Stout Medical Group, L.P. | Expandable support device |
EP1965713A2 (en) | 2005-12-28 | 2008-09-10 | Stout Medical Group, L.P. | Expandable support device and method of use |
US7901409B2 (en) | 2006-01-20 | 2011-03-08 | Canaveral Villegas Living Trust | Intramedullar devices and methods to reduce and/or fix damaged bone |
US20070270963A1 (en) | 2006-04-27 | 2007-11-22 | Sdgi Holdings, Inc. | Intervertebral implants and methods of use |
JP5542273B2 (en) | 2006-05-01 | 2014-07-09 | スタウト メディカル グループ,エル.ピー. | Expandable support device and method of use |
US7708779B2 (en) | 2006-05-01 | 2010-05-04 | Warsaw Orthopedic, Inc. | Expandable intervertebral spacers and methods of use |
US20080021559A1 (en) | 2006-07-06 | 2008-01-24 | Lanx, Llc | Expandable spinal fusion cage |
US7771473B2 (en) | 2006-07-06 | 2010-08-10 | Lanx, Inc. | Expandable spinal fusion cage |
US20080039942A1 (en) * | 2006-08-11 | 2008-02-14 | Bergeron Brian J | Spinal implant |
US8062303B2 (en) | 2006-08-16 | 2011-11-22 | K2M, Inc. | Apparatus and methods for inserting an implant |
US7815683B2 (en) | 2006-10-16 | 2010-10-19 | Warsaw Orthopedic, Inc. | Implants with helical supports and methods of use for spacing vertebral members |
WO2008070863A2 (en) | 2006-12-07 | 2008-06-12 | Interventional Spine, Inc. | Intervertebral implant |
US20080167657A1 (en) | 2006-12-31 | 2008-07-10 | Stout Medical Group, L.P. | Expandable support device and method of use |
US8142479B2 (en) * | 2007-05-01 | 2012-03-27 | Spinal Simplicity Llc | Interspinous process implants having deployable engagement arms |
US8273124B2 (en) | 2007-05-17 | 2012-09-25 | Depuy Spine, Inc. | Self-distracting cage |
US7967867B2 (en) | 2007-05-31 | 2011-06-28 | Spine Wave, Inc. | Expandable interbody fusion device |
US8114092B2 (en) | 2007-06-07 | 2012-02-14 | Exactech, Inc. | Inserter for a spinal implant |
US8403961B2 (en) | 2007-06-22 | 2013-03-26 | Simpirica Spine, Inc. | Methods and devices for controlled flexion restriction of spinal segments |
US8133232B2 (en) | 2007-07-17 | 2012-03-13 | Expanding Orthopedics Inc. | Expandable bone device |
US8241331B2 (en) | 2007-11-08 | 2012-08-14 | Spine21 Ltd. | Spinal implant having a post-operative adjustable dimension |
CA2715578A1 (en) | 2007-11-19 | 2009-05-28 | Magellan Spine Technologies, Inc. | Spinal implants and methods |
US8216314B2 (en) | 2008-02-13 | 2012-07-10 | Marc Richelsoph | Distractable spinal implant assembly |
US8932355B2 (en) | 2008-02-22 | 2015-01-13 | Coalign Innovations, Inc. | Spinal implant with expandable fixation |
US20100145455A1 (en) | 2008-12-10 | 2010-06-10 | Innvotec Surgical, Inc. | Lockable spinal implant |
US8696751B2 (en) | 2008-12-10 | 2014-04-15 | Coalign Innovations, Inc. | Adjustable distraction cage with linked locking mechanisms |
US8992620B2 (en) | 2008-12-10 | 2015-03-31 | Coalign Innovations, Inc. | Adjustable distraction cage with linked locking mechanisms |
US8267939B2 (en) | 2008-02-28 | 2012-09-18 | Stryker Spine | Tool for implanting expandable intervertebral implant |
US20090240334A1 (en) | 2008-03-19 | 2009-09-24 | Richelsoph Marc E | Vertebral device for restoration of vertebral body height |
WO2009125242A1 (en) | 2008-04-08 | 2009-10-15 | Vexim | Apparatus for restoration of the spine and methods of use thereof |
ES2361099B1 (en) | 2008-05-26 | 2012-05-08 | Rudolf Morgenstern Lopez | "INTERVERTEBRAL PROSTHESIS" |
US20090299478A1 (en) | 2008-06-03 | 2009-12-03 | Warsaw Orthopedic, Inc. | Lordotic Implant for Posterior Approach |
US8361152B2 (en) | 2008-06-06 | 2013-01-29 | Providence Medical Technology, Inc. | Facet joint implants and delivery tools |
US8110004B2 (en) | 2008-08-21 | 2012-02-07 | The Trustees Of The Stevens Institute Of Technology | Expandable interbody fusion cage with rotational insert |
US20100082109A1 (en) | 2008-09-22 | 2010-04-01 | Stout Medical Group, L.P. | Expandable intervertebral implant |
US8252054B2 (en) | 2009-01-14 | 2012-08-28 | Stout Medical Group, L.P. | Expandable support device and method of use |
IN2012DN00952A (en) | 2009-07-22 | 2015-04-10 | Spinex Tec Llc | |
US8328870B2 (en) * | 2009-08-06 | 2012-12-11 | Alphatec Spine, Inc. | Stand-alone interbody fixation system |
US9913726B2 (en) * | 2010-02-24 | 2018-03-13 | Globus Medical, Inc. | Expandable intervertebral spacer and method of posterior insertion thereof |
US8377140B2 (en) | 2011-01-12 | 2013-02-19 | Ebi, Llc | Expandable spinal implant device |
US20120277861A1 (en) | 2011-04-28 | 2012-11-01 | Warsaw Orthopedic, Inc. | Expandable spinal interbody implant |
US8628578B2 (en) | 2011-12-19 | 2014-01-14 | Warsaw Orthopedic, Inc. | Expandable interbody implant and methods of use |
US10159583B2 (en) | 2012-04-13 | 2018-12-25 | Neuropro Technologies, Inc. | Bone fusion device |
US9532883B2 (en) | 2012-04-13 | 2017-01-03 | Neuropro Technologies, Inc. | Bone fusion device |
ES2882166T3 (en) | 2013-08-29 | 2021-12-01 | Spineex Inc | Expandable and adjustable lordosis intervertebral fusion system |
EP3079637B1 (en) | 2013-12-11 | 2018-03-21 | NLT Spine Ltd. | Worm-gear actuated orthopedic implants. |
US8940049B1 (en) | 2014-04-01 | 2015-01-27 | Ex Technology, Llc | Expandable intervertebral cage |
US10278831B2 (en) | 2014-06-02 | 2019-05-07 | Zimmer Biomet Spine, Inc. | Expandable intervertebral fusion device |
EP3217926A4 (en) | 2014-11-12 | 2018-10-24 | iOrthopedics, Inc. | Universally expanding cage |
US10363142B2 (en) | 2014-12-11 | 2019-07-30 | K2M, Inc. | Expandable spinal implants |
EP3111896B1 (en) | 2015-06-30 | 2020-03-04 | Werner Consulting AG | Prosthetic device |
-
2013
- 2013-02-08 US US13/763,012 patent/US9913726B2/en active Active
-
2018
- 2018-01-31 US US15/884,493 patent/US10864086B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080215152A1 (en) * | 2005-06-07 | 2008-09-04 | Flex Partners, Inc. | System and Method for Restoration of Nutrient Flow to Nucleus Pulposa |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9707100B2 (en) | 2015-06-25 | 2017-07-18 | Institute for Musculoskeletal Science and Education, Ltd. | Interbody fusion device and system for implantation |
US11114309B2 (en) | 2016-06-01 | 2021-09-07 | Corning Incorporated | Articles and methods of forming vias in substrates |
US10794679B2 (en) | 2016-06-29 | 2020-10-06 | Corning Incorporated | Method and system for measuring geometric parameters of through holes |
US10756003B2 (en) | 2016-06-29 | 2020-08-25 | Corning Incorporated | Inorganic wafer having through-holes attached to semiconductor wafer |
US11774233B2 (en) | 2016-06-29 | 2023-10-03 | Corning Incorporated | Method and system for measuring geometric parameters of through holes |
US11877935B2 (en) | 2016-10-18 | 2024-01-23 | Camber Spine Technologies, LLC | Implant with deployable blades |
US11872143B2 (en) | 2016-10-25 | 2024-01-16 | Camber Spine Technologies, LLC | Spinal fusion implant |
US11062986B2 (en) | 2017-05-25 | 2021-07-13 | Corning Incorporated | Articles having vias with geometry attributes and methods for fabricating the same |
US11078112B2 (en) | 2017-05-25 | 2021-08-03 | Corning Incorporated | Silica-containing substrates with vias having an axially variable sidewall taper and methods for forming the same |
US10580725B2 (en) | 2017-05-25 | 2020-03-03 | Corning Incorporated | Articles having vias with geometry attributes and methods for fabricating the same |
US11554984B2 (en) | 2018-02-22 | 2023-01-17 | Corning Incorporated | Alkali-free borosilicate glasses with low post-HF etch roughness |
US11152294B2 (en) | 2018-04-09 | 2021-10-19 | Corning Incorporated | Hermetic metallized via with improved reliability |
US11201109B2 (en) | 2018-04-09 | 2021-12-14 | Corning Incorporated | Hermetic metallized via with improved reliability |
US11760682B2 (en) | 2019-02-21 | 2023-09-19 | Corning Incorporated | Glass or glass ceramic articles with copper-metallized through holes and processes for making the same |
US11972993B2 (en) | 2021-05-14 | 2024-04-30 | Corning Incorporated | Silica-containing substrates with vias having an axially variable sidewall taper and methods for forming the same |
Also Published As
Publication number | Publication date |
---|---|
US10864086B2 (en) | 2020-12-15 |
US20140228956A1 (en) | 2014-08-14 |
US20180147064A1 (en) | 2018-05-31 |
US9913726B2 (en) | 2018-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10864086B2 (en) | Expandable intervertebral spacer and method of posterior insertion thereof | |
US8394145B2 (en) | Expandable intervertebral spacer and method of posterior insertion thereof | |
US11007067B2 (en) | Expandable spinal fusion cage | |
US10500059B2 (en) | Methods of 3D printing universally expanding cages | |
US9119729B2 (en) | Steerable interbody fusion cage | |
US9566167B2 (en) | Expandable spinal implant | |
US9980822B2 (en) | Expandable interbody spacer | |
JP5885270B2 (en) | Intervertebral device and method of use | |
KR101657732B1 (en) | Apparatus for bone restoration of the spine and methods of use | |
US8778027B2 (en) | Implant apparatus and method including tee and screw mechanism for spinal fusion | |
JP5784757B2 (en) | Deployable interbody fusion graft | |
US20140194992A1 (en) | Expandable interbody (lateral, posterior, anterior) multi-access cage for spinal surgery | |
US20150148908A1 (en) | Articulating Interbody Cage and Methods Thereof | |
EP2508150A1 (en) | Adjustable apparatus for inserting an implant | |
CN115297812A (en) | Expandable intervertebral implant | |
RU2817675C1 (en) | Expandable modular intervertebral implant |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GLOBUS MEDICAL, INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEIMAN, MARK;REEL/FRAME:035346/0015 Effective date: 20150407 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |