Spinal implant system and methods of use

Patent metadata

Field	Value
Publication number	US-9707013-B2
Application number	US-201514701231-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	Apr 30, 2015
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

A bone fastener comprises a first member including an inner surface defining an implant cavity and a wall defining a groove. A first element is disposed within the groove. A second member is configured to penetrate tissue and engageable with the first element to dispose the first element in a capture orientation within the groove to connect the members. A second element is engageable with the first element to urge the first element to the capture orientation. Systems, instruments and methods are disclosed.

First claim

What is claimed is:

1. A bone fastener comprising:
a first member including an inner surface defining an implant cavity and a wall defining a groove;
a first element disposed within the groove;
a second member being configured to penetrate tissue and engageable with the first element to dispose the first element in a capture orientation within the groove to connect the members; and
a second element engageable with the first element to urge the first element to the capture orientation, the second element comprising a first cam and a second cam spaced apart from the first cam, the cams being rotatable relative to the first member into engagement with the first element,
wherein the groove includes a first circumferential channel and a second circumferential channel, the first element being disposed in the first circumferential channel in the capture orientation and in the second circumferential channel in an expanded orientation.

2. A bone fastener as recited in claim 1 , further comprising a crown disposed with the implant cavity, the second member being engageable with the crown such that the crown engages the second element to urge the first element to the capture orientation.

3. A bone fastener as recited in claim 1 , wherein the second element includes a collar disposed within the groove.

4. A bone fastener as recited in claim 3 , wherein the groove includes a first circumferential channel and a second circumferential channel, the first element being disposed in the first circumferential channel and the collar being disposed in the second circumferential channel in the capture orientation.

5. A bone fastener as recited in claim 3 , wherein the collar is fixed with the second member in the capture orientation.

6. A bone fastener as recited in claim 1 , wherein the second element includes a circumferential collar that defines a gap and is disposed within the groove.

7. A bone fastener as recited in claim 1 , wherein the second element includes a biasing member.

8. A bone fastener as recited in claim 7 , wherein the groove includes a first circumferential channel and a second circumferential channel, the first element being disposed in the first circumferential channel and the biasing member being disposed in the second circumferential channel in the capture orientation.

9. A bone fastener as recited in claim 1 , wherein the second element includes a spring.

10. A bone fastener as recited in claim 9 , wherein the spring is circumferentially disposed in the groove.

11. A bone fastener as recited in claim 1 , wherein the second element includes an elastomeric O-ring.

12. A bone fastener as recited in claim 1 , wherein the first element is expandable between the capture orientation and an expanded orientation.

13. A bone fastener as recited in claim 1 , wherein the second member is axially translatable relative to the first member to expand the first element.

14. A bone fastener as recited in claim 1 , wherein the first element includes a circumferential ring that defines a gap.

15. A bone fastener as recited in claim 1 , further comprising a crown disposed with the implant cavity and engageable with the second member.

16. A bone fastener as recited in claim 1 , wherein the cams are rotatable relative to the first member to urge the first element into the capture orientation.

17. A bone fastener as recited in claim 1 , a head of the second member is inserted into the first member and translates through and relative to the first element as the first element moves from the capture orientation to the expanded configuration.

18. A bone fastener as recited in claim 1 , further comprising a crown disposed with the implant cavity, wherein a head of the second member engages the crown as the first element moves from the expanded orientation to the capture orientation such that a shoulder of the crown translates and engages first surfaces of the cams to rotate the cams relative to the first member and second surfaces of the cams engage the first element to urge the first element into the capture configuration.

19. A spinal implant system comprising:
a plurality of alternate first members, each of the first members including an inner surface defining an implant cavity and a wall defining a groove;
a first element disposed within the groove;
a second member being configured to penetrate tissue and including a mating element engageable with a first member such that the second member is interchangeable with the plurality of first members, the second member being engageable with the first element to dispose the first element in a capture orientation within the groove to connect the members; and
a second element engageable with the first element to urge the first element to the capture orientation, the second element comprising a first cam and a second cam spaced apart from the first cam, the cams being rotatable relative to the first member into engagement with the first element,
wherein the groove includes a first circumferential channel and a second circumferential channel, the first element being disposed in the first circumferential channel in the capture orientation and in the second circumferential channel in an expanded orientation.

20. A spinal implant system comprising:
a plurality of alternate implant receivers, each of the implant receivers including a wall defining a groove;
a ring disposed within the groove;
a bone screw shaft including a head engageable with an implant receiver such that the shaft is compatible with the plurality of implant receivers, the shaft being engageable with a band to dispose the band in a capture orientation within the groove to connect the shaft with the implant receiver; and
an element engageable with the band to urge the band to the capture orientation, the element comprising a first cam and a second cam spaced apart from the first cam, the cams being rotatable relative to the plurality of implant receivers into engagement with the ring,
wherein the groove includes a first circumferential channel and a second circumferential channel, the ring being disposed in the first circumferential channel in the capture orientation and in the second circumferential channel in an expanded orientation.

Assignees

• Warsaw Orthopedic Inc

Inventors

• Rezach William Alan
• May Jason M
• Ballard Rodney R
• Rice Molly K

Classifications

• A61B17/7037 Primary

  wherein pivoting is blocked when the rod is clamped · CPC title

• A61B17/7038

  to a different extent in different directions, e.g. within one plane only · CPC title