Screw guide and tissue retractor instrument

Patent metadata

Field	Value
Publication number	US-11253274-B2
Application number	US-201715427201-A
Country	US
Kind code	B2
Filing date	Feb 8, 2017
Priority date	May 15, 2009
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

An apparatus is provided for performing spinal surgery having a handle assembly, a screw guide, and a retractor. A shaft is provided with a handle, a neck portion and a connecting portion. The screw guide is provided with a connecting element coupled to the connecting portion of the handle assembly. A retractor for retracting tissue is coupled to the screw guide, wherein the neck portion of the handle assembly is provided with a spring loaded sleeve adapted to engage one of a plurality of holes positioned on a portion of the connecting element. The connecting portion is pivotably coupled to the connecting element.

First claim

We claim:

1. An apparatus for performing spinal surgery comprising:
a handle assembly including:
a shaft having a handle, a neck portion and a connecting portion;

a screw guide having a connecting element coupled to the connecting portion of the handle assembly, the screw guide having at least one guide rail; and
a retractor for retracting tissue and adapted to engage the guide rail for sliding movement relative to the screw guide,
wherein the neck portion of the handle assembly comprises a spring loaded sleeve adapted to engage one of a plurality of holes positioned on a portion of the connecting element,
wherein the connecting element includes a pin assembly configured to open a through hole in the connecting element to allow access to a surgical site by a surgical instrument,
wherein a curvature of a distal end of the screw guide is configured to match a curvature of a portion of the spine at the surgical site,
wherein the screw guide includes a cylindrical body and a protrusion on an outer surface of the cylindrical body, and the connecting element includes an outer surface, an inner surface and an elongated slot that extends from the outer surface to the inner surface and wherein the elongated slot receives the protrusion to attach the screw guide to the connecting element,
wherein the handle is movably coupled to the connecting element such that the handle can pivot with respect to the connecting element, the screw guide, and the retractor.

2. The apparatus of claim 1 , wherein the spring loaded sleeve comprises a dowel which is adapted to couple to one of the plurality of holes.

3. The apparatus of claim 1 , wherein the pin assembly is spring loaded.

4. The apparatus of claim 3 , wherein the pin assembly is configured to lock the surgical instrument.

5. The apparatus of claim 1 , wherein the screw guide comprises at least two guide rails for slidably engaging with the retractor.

6. The apparatus of claim 5 , wherein the retractor is configured with at least two axial slots for engaging with the at least two guide rails of the screw guide.

7. The apparatus of claim 1 , wherein the retractor comprises an instrument engaging element positioned on an outer surface of the retractor.

8. The apparatus of claim 1 , wherein the retractor and the screw guide comprise radioopaque markers.

9. The apparatus of claim 1 , wherein the screw guide comprises a distal end having protrusions to access the surgical site.

10. An apparatus for performing spinal surgery comprising:
a handle assembly including:
a shaft having a handle, a neck portion and a connecting portion;

a screw guide having a connecting element coupled to the connecting portion of the handle assembly, the screw guide having at least one guide rail; and
a retractor for retracting tissue and adapted to engage the guide rail for sliding movement relative to the screw guide, the retractor having a concave shaped tip sized for seating on an anterior vertebral body of a patient,
wherein the connecting portion is pivotably coupled to the connecting element,
wherein the connecting element includes a pin assembly configured to open a through hole in the connecting element to allow access to a surgical site by a surgical instrument, wherein
a curvature of a distal end of the screw guide is configured to match a curvature of a portion of the spine at the surgical site,
wherein the handle is movably coupled to the connecting element such that the handle can pivot with respect to the connecting element, the screw guide, and the retractor,
wherein the screw guide includes a cylindrical body and a protrusion on an outer surface of the cylindrical body, and the connecting element includes an outer surface, an inner surface and an elongated slot that extends from the outer surface to the inner surface and wherein the elongated slot receives the protrusion to attach the screw guide to the connecting element.

11. The apparatus of claim 10 , wherein the neck portion of the handle assembly comprises a spring loaded sleeve adapted to engage one of a plurality of holes positioned on a portion of the connecting element.

12. The apparatus of claim 11 , wherein the spring loaded sleeve comprises a dowel which is adapted to couple to the one of the plurality of holes.

13. The apparatus of claim 10 , wherein the pin assembly is spring loaded.

14. The apparatus of claim 13 , wherein the pin assembly is configured to lock the surgical instrument.

15. The apparatus of claim 10 , wherein the screw guide comprises at least two guide rails for slidably engaging with the retractor.

16. The apparatus of claim 15 , wherein the retractor is configured with at least two axial slots for engaging with the at least two guide rails of the screw guide.

17. The apparatus of claim 10 , wherein the retractor comprises an instrument engaging element positioned on an outer surface of the retractor.

18. The apparatus of claim 10 , wherein the retractor and the screw guide comprise radioopaque markers.

19. The apparatus of claim 10 , wherein the screw guide comprises a distal end having protrusions to access the surgical site.

Assignees

• Globus Medical Inc
• Globus Mediccal Inc

Inventors

• Black Michael
• Dix Gary
• Lauryssen Carl

Classifications

• A61B2017/0046

  with a releasable handle; with handle and operating part separable · CPC title

• A61B17/1703

  using imaging means, e.g. by X-rays · CPC title

• A61B17/1757 Primary

  for the spine · CPC title

• A61B17/0218

  for minimally invasive surgery (A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61B2017/0256

  for the spine · CPC title