Surgical retraction system

Patent metadata

Field	Value
Publication number	US-12171420-B2
Application number	US-202217589369-A
Country	US
Kind code	B2
Filing date	Jan 31, 2022
Priority date	Jan 31, 2022
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

An example retraction system includes a first retraction assembly, the first retraction assembly including a first arm coupled to a rack, a second arm coupled to the rack, a first retractor blade coupled to the first arm and a second retractor blade coupled to the second arm. The retraction system also includes a second retraction assembly, the second retraction assembly including a carriage configured to engage a blade post having a blade coupled to a distal end and a handle coupled to a proximal end, the blade post adjustable relative to the carriage. The retraction system also includes a third retractor blade coupled to the blade post.

First claim

What is claimed is:

1. A retraction system, comprising:
a first retraction assembly, the first retraction assembly including:
a first arm coupled to a rack;
a second arm coupled to the rack;
a first retractor blade coupled to the first arm;
a second retractor blade coupled to the second arm;

a second retraction assembly, the second retraction assembly including:
a carriage configured to engage a blade post having a blade coupled to a distal end and a handle coupled to a proximal end, the blade post adjustable relative to the carriage;
a third retractor blade coupled to the blade post; and
an adaptor having a first region configured to engage the rack and a second region configured to receive a portion of the carriage, wherein the second region permits the carriage to translate in a longitudinal direction of the rack while the first region remains engaged to the rack;
wherein the carriage includes a projection, and wherein the adaptor includes a groove configured to engage the projection such that the projection is configured to translate within the groove of the adaptor, and wherein translation of the projection within the groove of the adaptor moves the third retractor blade in a cranial-caudal direction relative to a patient.

2. The retraction system of claim 1 ,
wherein the adaptor is configured to translate relative to the rack.

3. The retraction system of claim 1 , wherein the adaptor is fixed to the rack.

4. The retraction system of claim 1 , wherein the adaptor includes a clamping mechanism configured to releasably secure the adaptor to the rack.

5. The retraction system of claim 1 ,
wherein the adaptor includes an aperture; and
wherein the rack extends through the aperture.

6. The retraction system of claim 1 ,
wherein the coupling between the first retractor blade and the first arm is such that height of the first retractor blade is adjustable relative to the first arm;
wherein the coupling between the second retractor blade and the second arm is such that height of the second retractor blade is adjustable relative to the second arm;
wherein the retractor system further includes a first wag mechanism configured to cause a first distal end of the first retractor blade to wag side to side;
wherein the retractor system further includes a second wag mechanism configured to cause a second distal end of the second retractor blade to wag side to side;
wherein the retractor further includes a first telescoping section configured to permit the first retractor blade to be moved closer to or further from the rack; and
wherein the retractor further includes a second telescoping section configured to permit the second retractor blade to be moved closer to or further from the rack.

7. The retraction system of claim 1 , wherein the third retractor blade is configured to retract away from the first retractor blade and the second retractor blade to establish an operative corridor anterior to the psoas.

8. The retraction system of claim 1 ,
wherein the first retractor blade and the second retractor blade are configured to translate along a first plane;
wherein the third retractor blade is configured to retract along a second plane relative to the first plane; and
wherein retraction of the third retractor blade is configured to establish an operative corridor anterior to the psoas.

9. A retraction system for accessing the spine of a patient from an anterior-to-psoas approach, comprising:
a first retraction assembly having a first retractor blade assembly coupled to a rack and a second retractor blade assembly coupled to the rack;
a second retraction assembly having a third retractor blade assembly;
an adaptor configured to couple the first retraction assembly to the second retraction assembly, the adaptor having a first region configured to engage the rack of the first retraction assembly and a second region configured to receive a portion of the second retraction assembly, and wherein the second region permits the second retraction assembly to translate in a longitudinal direction of the rack while the first region remains engaged to the rack; and
a carriage configured to engage a blade post having a blade coupled to a distal end;
wherein the carriage includes a projection, and wherein the adaptor includes a groove configured to engage the projection such that the projection is configured to translate within the groove of the adaptor, and wherein translation of the projection within the groove of the adaptor moves a third retractor assembly in a cranial-caudal direction relative to a patient; and
wherein the first retraction assembly is coupled to the second retraction assembly such that adjustment of the first retractor blade assembly, the second retractor blade assembly or the third retractor blade assembly establishes an anterior-to-psoas operative corridor.

10. The retraction system of claim 9 , wherein retraction of the second retraction assembly in an anterior direction relative to the first retraction assembly expands the operative corridor.

11. The retraction system of claim 9 , wherein retraction of the third blade assembly in an anterior direction relative to the first retraction assembly expands the operative corridor.

12. The retraction system of claim 9 , wherein retraction of the third retractor blade assembly in an anterior direction relative to the first retractor blade assembly, the second retractor blade assembly or both the first and second retractor blade assemblies expands the operative corridor.

13. The retraction system of claim 9 , wherein the adaptor is configured to translate relative to the first retraction assembly.

14. The retraction system of claim 9 , wherein the adaptor is releasably adjustable relative to the first retraction assembly.

Assignees

• Nuvasive Inc

Inventors

• Serra Michael
• Tome Samuel
• Riemhofer Byron
• Fedon Shane

Classifications

• A61B2017/00486

  Adaptors for coupling parts with incompatible geometries · CPC title

• A61B2017/0042

  with special provisions for gripping · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title

• A61B2017/00407

  Ratchet means · CPC title

• A61B17/0206 Primary

  with antagonistic arms as supports for retractor elements · CPC title