Surgical instrument and method of use

• US 10,219,798 B2
• Filed: 07/15/2015
• Issued: 03/05/2019
• Est. Priority Date: 07/15/2015
• Status: Active Grant

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Capote, Cristian A.
• Primary Examiner(s): Ramana, Anu
• Application Number:
  US14/800,302
• Publication Number:
  US 20170014117A1
• Time in Patent Office: 1,329 Days
• Field of Search: 600214, 600215, 600222, 600227, 600228-231, 600234
• CPC Class Codes: A61B 17/0206 with antagonistic arms as supports for retractor elements
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements
• CPC Class Codes: A61B 2090/508 with releasable brake mechanisms
• CPC Class Codes: A61B 2090/571 for clamping a support arm to a bed or other supports
• CPC Class Codes: A61B 90/57 Accessory clamps

Abstract

A surgical instrument comprises an element connectable with a fixture. A first member is independently and selectively movable relative to the element and includes a part engageable with tissue of a substantially posterior portion of an incision relative to a body. A second member is independently and selectively movable relative to the element and includes a part engageable with tissue of a substantially anterior portion of the incision relative to the body. A third member is independently and selectively movable relative to the element and includes a part engageable with tissue of a substantially cephalad portion of the incision relative to the body. Systems and methods are disclosed.

Claims

1. A surgical instrument assembly comprising:

an element connectable with a fixture and comprising a shaft having a linear portion and spaced apart first, second and third projections that each extend directly from an outer surface of the linear portion wherein the projections are each fixed relative to the shaft, each projection defining an axis, the axes extending parallel to one another;

a first member comprising a collar that directly engages the first projection such that the first member is independently and selectively movable relative to the element, the first member including a part engageable with tissue of a substantially posterior portion of an incision relative to a body;

a second member comprising a collar that directly engages the second projection such that the second member is independently and selectively movable relative to the element, the second member including a part engageable with tissue of a substantially anterior portion of the incision relative to the body; and

a third member comprising a collar that directly engages the third projection such that the third member is independently and selectively movable relative to the element, the third member including a part engageable with tissue of a substantially cephalad portion of the incision relative to the body.

2. A surgical instrument assembly as recited in claim 1, wherein at least one of the members includes a first extension and a second extension.

3. A surgical instrument assembly as recited in claim 2, wherein at least one of the extensions is selectively rotatable relative to the element.

4. A surgical instrument assembly as recited in claim 2, wherein the second extension is selectively rotatable relative to the first extension.

5. A surgical instrument assembly as recited in claim 1, wherein at least one of the members includes a spheroidal joint connection with the element.

6. A surgical instrument assembly as recited in claim 1, wherein at least one of the members includes an adaptor disposed between the member and the part, the adaptor including a ramp interface such that the part is releasably engageable with the member.

7. A surgical instrument assembly as recited in claim 6, wherein the adaptor includes a quick release connection including a push button release.

8. A surgical instrument assembly as recited in claim 1, wherein one of the parts includes a posterior blade.

9. A surgical instrument assembly as recited in claim 1, wherein one of the parts includes an anterior blade.

10. A surgical instrument assembly as recited in claim 1, wherein one of the parts includes a cephalad blade.

11. A surgical instrument assembly as recited in claim 1, wherein the parts are disposable in a configuration to space tissue of an incision to define an oblique surgical pathway relative to a bilateral axis of a body.

12. A surgical instrument assembly as recited in claim 1, wherein the shaft comprises a linear configuration.

13. A surgical instrument assembly as recited in claim 1, wherein the projections each define a ball and the collars each define a socket having one of the balls disposed therein to form a ball and socket joint.

14. A surgical instrument assembly as recited in claim 1, wherein the part of the first member is a retractor blade, the first member including a clamp disposed between the collar of the first member and the retractor blade, the clamp comprising a cavity and a jaw, the law being configured for translation within the cavity to engage the retractor blade to fix the retractor blade with the clamp.

15. A surgical instrument assembly comprising:

an element connectable with a fixture and comprising a shaft having a linear portion, the linear portion spaced apart first, second and third projections that each extend directly from an outer surface of the linear portion wherein the projections are each fixed relative to the shaft, the projections each defining an axis, the axes each extending parallel to one another;

a first arm comprising a collar that directly engages the first projection such that the first arm is independently and selectively movable relative to the element, the first arm including a posterior blade;

a second arm comprising a collar that directly engages the first projection such that the second arm is independently and selectively movable relative to the element, the second arm including an anterior blade; and

a third arm comprising a collar that directly engages the first projection such that the third arm is independently and selectively movable relative to the element, the third arm including a cephalad blade,

wherein the arms are disposable in a configuration to space tissue of an incision to define an oblique surgical pathway relative to a bilateral axis of a body.

16. A surgical instrument assembly as recited in claim 15, wherein at least one of the arms includes a first extension and a second extension.

17. A surgical instrument assembly as recited in claim 16, wherein at least one of the extensions is selectively rotatable and/or translatable relative to the element.

18. A surgical instrument assembly as recited in claim 15, wherein at least one of the arms includes an adaptor disposed between the arm and the blade such that the blade is releasably engageable with the arm.

19. A surgical instrument assembly comprising:

an element connectable with a fixture and comprising a shaft and spaced apart first, second and third projections that each extend outwardly from an outer surface of the shaft;

a first member comprising a collar that directly engages the first projection such that the first member is independently and selectively movable relative to the element, the first member including a part engageable with tissue of a substantially posterior portion of an incision relative to a body;

a second member comprising a collar that directly engages the second projection such that the second member is independently and selectively movable relative to the element, the second member including a part engageable with tissue of a substantially anterior portion of the incision relative to the body; and

a third member comprising a collar that directly engages the third projection such that the third member is independently and selectively movable relative to the element, the third member including a part engageable with tissue of a substantially cephalad portion of the incision relative to the body,

wherein the part of the first member is a retractor blade, the first member including an adaptor disposed between the collar of the first member and the retractor blade,

wherein the retractor blade comprises a cylinder including a first wedge disposed within a channel of the cylinder,

wherein the adaptor comprises a housing having a cavity configured for disposal of the cylinder, the adaptor comprising a push button having an extension comprising a second wedge disposed in a channel of the extension, the extension being configured for disposal in an axial cavity of the housing, and

wherein the push button is inserted into the housing such that the wedges move from a first orientation in which the second wedge is movable relative to the first wedge and the retractor arm is removable from the adaptor and a second orientation in which the second wedge is engaged with the first wedge in an interference fit to prevent the retractor arm from disengaging the adaptor.

20. A surgical instrument assembly as recited in claim 19, wherein the first wedge is fixed relative to the cylinder.