Lateral retractor system and methods of use

• US 10,076,320 B2
• Filed: 08/18/2017
• Issued: 09/18/2018
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: Zimmer Biomet Spine, Inc. (Zimvie Incorporated)
• Original Assignee: Zimmer Biomet Spine, Inc. (Zimvie Incorporated)
• Inventors: Mast, Randall G., Burkholder, Alan R., Schifle, Andrew, Kanter, Adam, Okonkwo, David O.
• Primary Examiner(s): SUMMITT, LYNNSY M
• Assistant Examiner(s): Schneider, Lynnsy
• Application Number:
  US15/680,744
• Publication Number:
  US 20170340318A1
• Time in Patent Office: 396 Days
• CPC Class Codes: A61B 17/0206 with antagonistic arms as supports for retractor elements
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/7079 Tools requiring anchors to be already mounted on an implanted longitudinal or transverse element, e.g. where said element guides the anchor motion
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/0256 for the spine

Abstract

Technology disclosed herein relates to retractors and methods of use for surgical procedures, and in particular, spinal surgical procedures. In one embodiment, a surgical retractor includes a pair of pivotable armatures and a translatable armature. A body for supporting the armatures is provided, with a handle connected thereto. The handle includes a first rotary actuator, wherein a rotation of the first rotary actuator moves the pair of pivotable armatures in opposite arcuate directions, and a second rotary actuator, wherein a rotation of the second rotary actuator translates the translatable armature in a linear direction.

Claims

1. A surgical retractor comprising:

a retractor body including a medial longitudinal axis;

a first armature including a first gear and a second armature including a second gear, each armature pivotably coupleable to the retractor body;

a first retractor blade affixed to a distal portion of the first armature;

a second retractor blade affixed to a distal portion of the second armature;

a translatable armature supported by the retractor body between the first and second armatures, the translatable armature linearly translatable to translate a third retractor blade affixed to a distal portion of the translatable armature;

a central drive internal to the body and engageable with both the first gear and the second gear;

a first actuator coupled to the drive, the first actuator operable to operate the drive to concurrently pivot the first armature and the second armature;

a second actuator operable to linearly translate the translatable armature; and

a first shim coupleable to a distal portion of the first retractor blade;

a second shim coupleable to a distal portion of the second retractor blade; and

a third shim coupleable to a distal portion of the third retractor blade.

2. The surgical retractor of claim 1, wherein each shim is sized and configured to insert between two vertebrae during a spinal procedure.

3. The surgical retractor of claim 1, wherein each shim further comprises a pair of tabs extending from a proximal portion of each shim;

and

wherein each blade further comprises a plurality of pairs of grooves configured to receive the pair of tabs such that the pair of tabs can lockingly engage each pair of grooves.

4. The surgical retractor of claim 3, wherein the plurality of grooves are angled to enable a ratcheting engagement between the plurality of grooves and the pair of tabs.

5. The surgical retractor of claim 3, wherein each pair of tabs is cantilevered from a proximal termination of the shim allowing the pair of tabs to flex towards each other to disengage the grooves.

6. The surgical retractor of claim 1, wherein the first armature and the second armature are movable independent of the translatable armature.

7. The surgical retractor of claim 1, wherein the wherein the first actuator rotates the driver, wherein the driver directly interfaces with the first armature and the second armature.

8. An apparatus comprising:

a retractor body;

a first armature including a first gear, the first armature pivotably coupleable to the retractor body;

a second armature including a second gear, the second armature pivotably coupleable to the retractor body;

a retractor blade affixed to a distal portion of the first armature, the first armature pivotable to rotate the retractor blade;

a translatable armature supported by the retractor body between the first and second armatures, the translatable armature linearly translatable to translate a third retractor blade;

a central drive internal to the body and engageable with both the first gear and the second gear;

an actuator operable to pivot the first gear and the second gear;

a second actuator operable to linearly translate the translatable armature; and

a shim coupleable to a distal portion of the retractor blade, the shim further comprising a pair of tabs extending from a proximal portion of the shim, the tabs releasably securable to a pair of grooves of the retractor blade.

9. The surgical retractor of claim 8, wherein the shim is sized and configured to insert between two vertebrae during a spinal procedure.

10. The surgical retractor of claim 8, wherein the blade includes a plurality of pairs of grooves.

11. The surgical retractor of claim 10, wherein each groove of the plurality of pairs of grooves is angled to enable a ratcheting engagement between the plurality of pairs of grooves and the pair of tabs.

12. The surgical retractor of claim 10, wherein each pair of tabs is cantilevered from a proximal end of the shim allowing the pair of tabs to flex towards each other to disengage the grooves.

13. The surgical retractor of claim 8, wherein the actuator rotates the driver and wherein the driver directly interfaces with the first and second gears.