Spinal implant system and methods of use

Patent metadata

Field	Value
Publication number	US-2016106473-A1
Application number	US-201414518760-A
Country	US
Kind code	A1
Filing date	Oct 20, 2014
Priority date	Oct 20, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A spinal implant system comprises a plurality of alternate first members. Each of the first members includes an inner surface defining an implant cavity. A second member is configured to penetrate tissue and includes a mating element engageable with a first member such that the second member is interchangeable with the plurality of first members. A first member is selected for connection with the second member to comprise a bone fastener having a selected movement. Fasteners, instruments and methods are disclosed.

First claim

What is claimed is:

1 . 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 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, wherein a first member is selected for connection with the second member to comprise a bone fastener having a selected movement.

2 . A spinal implant system as recited in claim 1 , wherein the plurality of first members include at least one first member having an inner surface engageable with the mating element for rotation of the second member about a plurality of axes relative to the at least one first member and at least one first member having an inner surface engageable with the mating element for rotation of the second member about a single axis relative to the at least one first member.

3 . A spinal implant system as recited in claim 1 , wherein the plurality of first members include at least one first member having an inner surface that interfaces with the mating element such that the members comprise a multi-axial bone fastener and at least one first member having an inner surface that interfaces with the mating element such that the members comprise a uni-axial bone fastener.

4 . A spinal implant system as recited in claim 1 , wherein the mating element interfaces with a selected first member such that the second member is rotatable about a single axis relative to the selected first member.

5 . A spinal implant system as recited in claim 1 , wherein the mating element interfaces with a selected first member such that the second member is rotatable about a plurality of axes relative to the selected first member.

6 . A spinal implant system as recited in claim 1 , wherein the mating element includes a head and the second member includes a shaft configured to penetrate the tissue, the shaft being rotatable about one or a plurality of axes relative to the selected first member.

7 . A spinal implant system as recited in claim 6 , wherein the head is movable relative to the inner surface such that the shaft pivots through a plurality of planes relative to the selected first member.

8 . A spinal implant system as recited in claim 6 , wherein the head includes flats engageable with the inner surface to resist and/or prevent rotation of the head relative to the selected first member.

9 . A spinal implant system as recited in claim 6 , wherein the head includes flats disposed with a keyway of the inner surface such that the flats are keyed to the selected first member and the shaft pivots through only one plane relative to the selected first member.

10 . A spinal implant system as recited in claim 1 , wherein the inner surface includes flats and the mating element includes flats that interface in a keyed connection such that the second member pivots through only one plane relative to the selected first member.

11 . A spinal implant system as recited in claim 1 , wherein the inner surface defines a groove configured for disposal of a circumferential ring that defines a gap.

12 . A spinal implant system as recited in claim 11 , wherein the gap defines a dimension that is less than at least one dimension of the ring.

13 . A spinal implant system as recited in claim 11 , wherein the gap defines a slot thickness that is less than a height and a width of the ring.

14 . A spinal implant system as recited in claim 1 , further comprising a crown disposed with the implant cavity and engageable with the second member.

15 . A spinal implant system as recited in claim 1 , further comprising a spinal rod disposable with the implant cavity.

16 . A method of assembly for a bone fastener, the method comprising the steps of:
providing a plurality of alternate first members, each of the first members including an inner surface defining an implant cavity; providing a second member being configured to penetrate tissue and including a mating element such that the second member is interchangeable with the plurality of first members; and selecting a first member for connection with the second member to comprise a bone fastener having a selected movement.

17 . A method as recited in claim 16 , wherein the plurality of first members include at least one first member having an inner surface that interfaces with the mating element such that the members comprise a multi-axial bone fastener and at least one first member having an inner surface that interfaces with the mating element such that the members comprise a uni-axial bone fastener.

18 . A method as recited in claim 16 , wherein the inner surface defines a groove and further comprising the step of inserting a band with the groove to connect the members.

19 . A method as recited in claim 16 , further comprising the step of attaching a spinal rod with the implant cavity.

20 . A spinal implant system comprising:
a plurality of alternate implant receivers; and a bone screw shaft including a head engageable with an implant receiver such that the shaft is compatible with the plurality of implant receivers, wherein an implant receiver is selected for connection with the shaft to comprise a bone fastener having a selected movement.

Assignees

• Rezach William Alan
• May Jason
• Warsaw Orthopedic Inc

Inventors

• Rezach William Alan
• May Jason

Classifications

• A61B17/7035 Primary

  Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other · CPC title

• A61B17/7032

  Screws or hooks with U-shaped head or back through which longitudinal rods pass · CPC title

• A61B17/7038

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

• A61B17/7002

  Longitudinal elements, e.g. rods · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title