Surgical instrument and method

Patent metadata

Field	Value
Publication number	US-9402660-B2
Application number	US-201314018897-A
Country	US
Kind code	B2
Filing date	Sep 5, 2013
Priority date	Sep 5, 2013
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A surgical instrument includes a first member defining a longitudinal axis. A second member is disposed with the first member and is axially translatable relative to the first member. A first body is connected to the first member and is translatable along an arcuate path relative to the first member. The first body is connected to a first implant support. A second body is connected to the second member and is translatable along an arcuate path relative to the second member. The second body is connected to a second implant support. Systems and methods of use are disclosed.

First claim

What is claimed is:

1. A surgical instrument comprising:
a first member defining a longitudinal axis;
a second member disposed with the first member and being axially translatable relative to the first member;
a first body connected to the first member and being translatable along an arcuate path relative to the first member, the first body being connected to a first implant support;
a second body connected to the second member and being translatable along an arcuate path relative to the second member, the second body being connected to a second implant support; and
a first gear rack disposed with the first member and the first body such that the first body is translatable along the arcuate path,
wherein the rack defines a first cavity disposed on a first lateral side and a second cavity disposed on a second lateral side and the first body includes opposing flanges configured for mating engagement with the first and second cavities.

2. A surgical instrument as recited in claim 1 , wherein the flanges extend from a female mating part having an inner surface defining a passageway and the cavities extend into a male mating part configured for mating engagement with the inner surface.

3. A surgical instrument as recited in claim 1 , further comprising a second gear rack disposed with the second member and the second body such that the second body is translatable along the arcuate path.

4. A surgical instrument as recited in claim 1 , wherein the first rack includes a toothed outer surface and the first body includes a rotatable shaft having a gear portion configured for mating engagement with the toothed outer surface to translate the first body along the rack.

5. A surgical instrument as recited in claim 4 , wherein the shaft is axially translatable within a cavity defined by the first body between a first position such that the gear portion engages the toothed outer surface and a second position such that the first body is translatable along the arcuate path.

6. A surgical instrument as recited in claim 1 , further comprising a coupling member including a first portion having an arcuate configuration and a second portion extending substantially perpendicularly from the first portion, the first portion being disposable with the first body and the second portion being disposable in an inner passageway defined in the first member.

7. A surgical instrument as recited in claim 6 , wherein the second portion is connected to the first portion via a hinge.

8. A surgical instrument as recited in claim 6 , wherein the inner passageway includes a tapered configuration and the second portion is disposable in a friction fit engagement with the first member.

9. A surgical instrument as recited in claim 8 , wherein the second portion is translatable along the inner passageway in a first direction and a second opposing direction, the second portion including a bearing configuration to resist translation in the first direction.

10. A surgical instrument as recited in claim 1 , wherein the second member includes a lock that resists axial translation of the second member relative to the first member.

11. A surgical instrument as recited in claim 10 , wherein the lock is resiliently biased to a locking orientation.

12. A surgical instrument as recited in claim 1 , wherein the first member includes a threaded shaft and the second member includes an inner threaded surface engageable with the shaft.

13. A surgical instrument as recited in claim 1 , wherein the first member includes a gear rack and the second member includes an inner threaded surface engageable with the gear rack, and further comprising a third member including an inner surface engageable with the gear rack such that as the inner threaded surface of the second member rotates relative to the gear rack, the second member linearly translates along the gear rack.

14. A surgical instrument as recited claim 1 , wherein at least one of the bodies include a capture element to engage the implant support.

15. A surgical instrument as recited in claim 14 , wherein the capture element is releasably engageable with the at least one of the bodies.

16. A surgical instrument comprising:
a first member including a linear shaft;
a second member being axially translatable along the shaft and including a lock configured to selectively fix the second member relative to the first member;
a first gear rack having an arcuate configuration and being disposable with the first member;
a first body including a gear portion connected with the first gear rack and being translatable along the first gear rack in an arcuate path and relative to the first member, the first body including a lock configured to selectively fix the first body relative to the first gear rack and defining a cavity configured for disposal of a first implant support;
a second gear rack having an arcuate configuration and being disposable with the second member; and
a second body including a gear portion connected with the second gear rack and being translatable along the second gear rack in an arcuate path and relative to the second member, the second body including a lock configured to selectively fix the second body relative to the second gear rack and defining a cavity configured for disposal of a second implant support.

17. A surgical instrument as recited claim 16 , wherein at least one of the bodies include a capture element to engage the implant support.

18. A surgical instrument comprising:
a first member defining a longitudinal axis and including a gear rack;
a second member disposed with the first member and being axially translatable relative to the first member, the second member including an inner threaded surface engageable with the gear rack;
a third member including an inner surface engageable with the gear rack such that as the inner threaded surface of the second member rotates relative to the gear rack, the second member linearly translates along the gear rack;
a first body connected to the first member and being translatable along an arcuate path relative to the first member, the first body being connected to a first implant support; and
a second body connected to the second member and being translatable along an arcuate path relative to the second member, the second body being connected to a second implant support.

19. A surgical instrument as recited claim 18 , further comprising a coupling member including a first portion having an arcuate configuration and a second portion extending substantially perpendicularly from the first portion, the first portion being disposable with the first body and the second portion being disposable in an inner passageway defined in the first member.

20. A surgical instrument as recited claim 19 , wherein the second portion is connected to the first portion via a hinge.

Assignees

• Warsaw Orthopedic Inc

Inventors

• Brinkman Jennifer
• Mcbride Jr Larry Thomas

Classifications

• A61B17/7077

  for moving bone anchors attached to vertebrae, thereby displacing the vertebrae · CPC title

• A61B17/708 Primary

  with tubular extensions coaxially mounted on the bone anchors · CPC title