Surgical implant system and method

Patent metadata

Field	Value
Publication number	US-9724149-B2
Application number	US-201313789180-A
Country	US
Kind code	B2
Filing date	Mar 7, 2013
Priority date	Mar 7, 2013
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A surgical instrument includes a first member defining a longitudinal axis and including a drive interface engageable with a first surface of a bone fastener. The first surface is configured for penetrating a sacrum. A second member includes a drive interface engageable with a second surface of the bone fastener to translate the second surface relative to the first surface such that the second surface engages an outer non-articular surface of an ilium to draw separated articular surfaces of the sacrum and the ilium into fixation. In some embodiments, systems and methods are disclosed. Systems and methods are disclosed.

First claim

What is claimed is:

1. A surgical system comprising:
a bone fastener comprising a shaft having a threaded outer surface, a head having a threaded inner surface that engages the threaded outer surface, and a washer positioned between the head and the shaft;
a first member defining a longitudinal axis and including a first drive interface engageable with a drive interface of the head and a second drive interface engageable with a drive interface of the shaft; and
a second member including a drive interface engageable with the drive interface of the head,
wherein the head is rotatable relative to the shaft to translate the head axially relative to the shaft and the washer is movable between a first configuration in which the washer is rotatable relative to the head and a second configuration in which the washer is fixed relative to the head.

2. A surgical system as recited in claim 1 , wherein the first member comprises an anchor driver including an elongated shaft extending to the first drive interface and a T-shaped handle.

3. A surgical system as recited in claim 1 , wherein the first drive interface and the second drive interface are disposed in a serial configuration along the longitudinal axis.

4. A surgical system as recited in claim 3 , wherein the serial configuration includes a stepped orientation of the first and second drive interfaces.

5. A surgical system as recited in claim 1 , wherein the second member comprises a compression driver including an elongated shaft extending to the drive interface of the second member and a T-shaped handle.

6. A surgical system as recited in claim 1 , wherein the first member is separate from the second member.

7. A surgical system as recited in claim 1 , wherein the second member is spaced apart from the drive interface of the shaft when the drive interface of the second member engages the drive interface of the head.

8. A surgical system as recited in claim 1 , wherein the second drive interface is distal to the first drive interface along the longitudinal axis.

9. A surgical system as recited in claim 1 , wherein the washer is rotatable relative to the shaft when the washer is in the first configuration.

10. A surgical system as recited in claim 1 , wherein serrations of the washer engage a serrated surface of the head when the washer is in the second configuration.

11. A surgical system as recited in claim 1 , wherein the bone fastener defines a second longitudinal axis and the washer includes at least one penetrating element that extends parallel to the second longitudinal axis.

12. A surgical system as recited in claim 1 , wherein the bone fastener defines a second longitudinal axis and the washer includes a plurality of spikes disposed circumferentially about the washer that each extend parallel to the second longitudinal axis.

13. A surgical system as recited in claim 1 , wherein the shaft and the head each include a flange and the head is configured to translate axially relative to the shaft in a first direction to engage the flanges with one another to prevent further translation of the head relative to the shaft in the first direction.

14. A surgical system as recited in claim 1 , wherein the drive interface of the head comprises a socket having hex socket configuration and the drive interface of the shaft comprises a socket having a hexalobular socket configuration.

15. A surgical implant system comprising:
a first member defining a longitudinal axis and including a first drive interface and a second drive interface;
a second member that is separate from the first member and includes a drive interface; and
a bone fastener comprising an inner member configured for penetrating a sacrum, an outer member configured to engage an outer non-articular surface of an ilium, and a washer positioned between the inner and outer members,
wherein the second drive interface is engageable with the inner member and the first drive interface is engageable with the outer member to rotate the inner and outer members for fixation of the inner member with the sacrum,
wherein the drive interface of the second member is engageable with the outer member to rotate the outer member relative to the inner member to cause axial translation of the inner member relative to the outer member in a configuration such that separated articular surfaces of the sacrum and the ilium are drawn into fixation, and
wherein the washer is movable between a first configuration in which the washer is rotatable relative to the outer member and a second configuration in which the washer is fixed relative to the outer member.

16. A surgical implant system as recited in claim 15 , wherein the first member comprises an anchor driver including an elongated shaft extending to the first drive interface and a T-shaped handle and the second member comprises a compression driver including an elongated shaft extending to the drive interface of the second member and a T-shaped handle.

17. A surgical implant system as recited in claim 15 , wherein the outer member includes at least one fixation element oriented to penetrate an outer surface of the ilium.

18. A surgical implant system as recited in claim 15 , wherein the first drive interface engages a socket of the outer member having a hex socket configuration and the second drive interface engages a socket of the inner member having a hexalobe socket configuration.

19. A surgical implant system as recited in claim 15 , wherein:
serrations of the washer engage a serrated surface of the head when the washer is in the second configuration; and
the bone fastener defines a second longitudinal axis and the washer includes a plurality of spikes disposed circumferentially about the washer that each extend parallel to the second longitudinal axis.

20. A surgical system comprising:
a bone fastener comprising a shaft having a threaded outer surface, a head having a threaded inner surface that engages the threaded outer surface, and a washer that is positioned between the head and the shaft;
a first member defining a longitudinal axis and including a first drive interface engageable with a drive interface of the head having a hex socket configuration and a second drive interface engageable with a drive interface of the shaft having a hexalobe socket configuration; and
a second member including a drive interface engageable with the drive interface of the head,
wherein the head is rotatable relative to the shaft to translate the head axially relative to the shaft and the washer is movable between a first configuration in which the washer is rotatable relative to the head and a second configuration in which the washer is fixed relative to the head,
wherein serrations of the washer engage a serrated surface of the head when the washer is in the second configuration, and
wherein the bone fastener defines a second longitudinal axis and the washer includes a plurality of spikes disposed circumferentially about the washer that each extend parallel to the second longitudinal axis.

Assignees

• Warsaw Orthopedic Inc
• Warsaw Orhtopedic Inc

Inventors

• Trieu Hai H
• Burd Brian
• Mcmahon Amanda
• Simmons Michael

Classifications

• A61B17/8695

  Washers (surrounding screw head in plate hole A61B17/8047, between bone plate and bone A61B17/8028) · CPC title

• A61B17/866

  Material or manufacture · CPC title

• A61B17/888

  the driver bit acting on the central region of the screw head · CPC title

• A61B17/68

  Internal fixation devices {, including fasteners and spinal fixators, even if a part thereof projects from the skin (bone staples A61B17/0642)} · CPC title

• A61B17/8875 Primary

  Screwdrivers, spanners or wrenches · CPC title