Anchoring device and system for an intervertebral implant, intervertebral implant and implantation instrument
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-002/44
A61B-017/70
A61F-002/46
A61F-002/30
A61B-017/80
출원번호
US-0774547
(2013-02-22)
등록번호
US-9039774
(2015-05-26)
우선권정보
FR-12 51733 (2012-02-24)
발명자
/ 주소
Chataigner, Hervé
Chebuhar, Craig
Dinville, Hervé
Bougere, Emmanuel
출원인 / 주소
LDR Medical
대리인 / 주소
Denko Coburn Lauff LLP
인용정보
피인용 횟수 :
17인용 특허 :
422
초록▼
Various embodiments of intervertebral implants, anchoring devices for intervertebral implants, and implantation instrumentation are provided, along with various embodiments of methods for using one or more of the devices. Some embodiments of an anchoring device have a body comprising at least one cu
Various embodiments of intervertebral implants, anchoring devices for intervertebral implants, and implantation instrumentation are provided, along with various embodiments of methods for using one or more of the devices. Some embodiments of an anchoring device have a body comprising at least one curve and a rigid plate elongated along a longitudinal axis so that its front end enters at least one vertebra while its rear end remains in the passage of an implant. In some embodiments, the plate comprises at least one longitudinal slot separating at least one posterior portion of the plate into two branches, with at least one branch comprising at least one withdrawal stop configured to retain the device in the implant.
대표청구항▼
1. A system for treatment of a spine comprising: an intervertebral implant comprising a first contact surface adapted and configured to contact a first vertebral endplate,a second contact surface adapted and configured to contact a second vertebral endplate,a peripheral surface extending between at
1. A system for treatment of a spine comprising: an intervertebral implant comprising a first contact surface adapted and configured to contact a first vertebral endplate,a second contact surface adapted and configured to contact a second vertebral endplate,a peripheral surface extending between at least a part of the first contact surface and at least a part of the second contact surface,a first passage having an opening on the peripheral surface, the first passage extending from the opening toward the first contact surface and being adapted and configured for transit of a front end of an elongated, curved anchor from the peripheral surface to project from the first contact surface,a first insertion stop surface proximate to the first passage configured to abut a corresponding second insertion stop surface of an anchor, anda first withdrawal stop surface proximate to the first passage configured to abut a corresponding second withdrawal stop surface of an anchor;an anchor having a front end, a rear edge, and a longitudinal axis extending between the front end and the rear edge, the anchor comprising at least one plate that is elongated and curved along the longitudinal axis of the anchor and that has a width transverse to the longitudinal axis of the anchor,at least one slot oriented generally along the longitudinal axis of the anchor and separating the rear edge and at least a reward portion of the plate into a first branch and a second branch, with the first branch being resiliently movable with respect to the second branch,a second insertion stop surface oriented angularly to the longitudinal axis of the anchor that is adapted and configured to abut the first insertion stop surface and hold the implant against the first vertebral endplate, anda second withdrawal stop surface disposed on one of the branches and oriented angularly to the longitudinal axis of the anchor, the second withdrawal stop surface being adapted and configured to abut the first withdrawal stop surface and inhibit withdrawal of the anchor from the implant; andinstrumentation adapted and configured for insertion of the implant into an intervertebral space, for insertion of the anchor in the implant, and for fixation of the implant to the first vertebral endplate, the instrumentation comprising a holder for the anchor comprising a body and a guide surface formed in the body that corresponds to the curvature of the anchor plate, the body having a width less than the width of the plate,an impactor comprising a first head configured and adapted to receive the holder and a driver configured and adapted to drive the anchor, anda guide elongated along a longitudinal axis extending between a gripping end of the guide and a pushing end of the guide, the gripping end having a second head configured and adapted to grip the implant and comprising a second passage along the longitudinal axis of the guide, the second passage having a shape and dimensions adapted and configured for passage of the anchor and at least part of the holder. 2. The system of claim 1, in which the slot separates the plate in the width of the plate. 3. The system of claim 2, in which the slot extends generally perpendicular to the width of the plate. 4. The system of claim 2, in which the anchor has a thickness transverse to the longitudinal axis of the anchor and to the width of the plate, and the slot extends diagonally through the thickness. 5. The system of claim 4, in which the rear edge of the first branch and the rear edge of the second branch are offset along the thickness. 6. The system of claim 1, in which the anchor has a thickness transverse to the longitudinal axis of the anchor and to the width of the plate, and the slot separates the plate in its thickness. 7. The system of claim 6, in which the second withdrawal stop surface extends from one of the branches in the thickness. 8. The system of claim 6, in which the slot also separates the plate in the width of the plate. 9. The system of claim 1, in which the slot is wider at the rear edge. 10. The system of claim 9, in which the slot has a stress-relief portion opposite the rear edge. 11. The system of claim 1, in which the slot has a beveled first edge along the first branch and a beveled second edge along the second branch, with the beveled first edge generally facing the beveled second edge. 12. The system of claim 1, in which the slot is curved along the longitudinal axis of the anchor. 13. The system of claim 1, in which the second withdrawal stop surface faces toward the rear edge and the anchor comprises a beveled surface disposed on same branch as the second withdrawal stop surface with the beveled surface being oriented obliquely to the longitudinal axis of the anchor and facing away from the rear edge. 14. The system of claim 1, in which the second withdrawal stop surface is disposed on the first branch;the implant comprises a third withdrawal stop surface; andthe anchor comprises a fourth withdrawal stop surface disposed on the second branch and oriented angularly to the longitudinal axis of the anchor, the fourth withdrawal stop surface being adapted and configured to abut the third withdrawal stop surface and inhibit withdrawal of the anchor from the implant. 15. The system of claim 1, in which the second insertion stop surface is formed by a thickening at the rear edge. 16. The system of claim 1, in which the second insertion stop surface is formed by lug extending along the width of the plate. 17. The system of claim 1, in which the first branch has a curvature greater than the curvature of the second branch. 18. The system of claim 1, in which: the holder body has a length transverse to the width of the holder body; andthe driver comprises generally parallel first and second arms, each of the first and second arms having a length greater than a length of the holder body, anda gap between the first and second arms at least as wide as the width of the holder body. 19. The system of claim 18, in which: the holder body has a height transverse to the length and width of the holder body, with opposing first and second planes generally parallel to the length and the width of the holder body defining the height of the holder body;the holder comprises opposing first and second plates, the first plate oriented generally in the first plane and the second plate oriented generally in the second plane, with the first and second plates spaced apart by the height of the holder body and each of the first and second plates having a width greater than the width of the gap between the first and second arms; andeach of the first and second arms have a height less than the height of the holder body. 20. The system of claim 18, in which the first head comprises a passageway having sufficient dimensions to enclose the holder.
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