Surgical instrument including a wire guide

• US 10,639,093 B2
• Filed: 12/01/2016
• Issued: 05/05/2020
• Est. Priority Date: 12/01/2016
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Keffeler, David M., Hess, Kris
• Primary Examiner(s): Hupczey, Jr., Ronald
• Application Number:
  US15/366,045
• Publication Number:
  US 20180153614A1
• Time in Patent Office: 1,251 Days
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/00607 Coagulation and cutting with the same instrument
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/1455 having a moving blade for cutting tissue grasped by the jaws

Abstract

A surgical instrument including a housing, a shaft, an end effector assembly, a first electrical wire, and a wire guide. The shaft defines a lumen and extends distally from the housing. The end effector assembly is disposed at a distal end portion of the shaft and includes a first electrically-conductive tissue-treating surface. The first electrical wire extends from the housing, through the shaft, and into electrical communication with the first electrically-conductive tissue-treating surface. The electrical wire is adapted to connect to a source of energy and configured to supply energy to the first electrically-conductive tissue-treating surface. The wire guide is disposed within the housing and engaged about a proximal portion of the shaft within the housing. The wire guide is also configured to guide the first electrical wire from the housing into the shaft.

Claims

1. A surgical instrument, comprising:

a housing;

a shaft extending distally from the housing and defining a lumen therethrough and a longitudinal axis;

an end effector assembly disposed at a distal end portion of the shaft, the end effector assembly including a first electrically-conductive tissue-treating surface;

a first electrical wire extending from the housing, through the shaft, and into electrical communication with the first electrically-conductive tissue-treating surface, the first electrical wire adapted to connect to a source of energy and configured to supply energy to the first electrically-conductive tissue-treating surface; and

a wire guide disposed within the housing and engaged about a proximal portion of the shaft within the housing, the wire guide configured to guide the first electrical wire from the housing into the shaft, the wire guide including;

a shaft attachment defining a passageway therethrough, the shaft having a proximal end received in the passageway; and

a first wire snap feature disposed within the passageway of the shaft attachment and configured to secure a portion of the first electrical wire to the wire guide and direct the first electrical wire into the shaft, wherein the first electrical wire has a first portion extending perpendicularly relative to the longitudinal axis of the shaft, a bent second portion disposed within the first wire snap feature, and a third portion extending distally relative to the first and second portions and through the shaft, such that the first and third portions of the first electrical wire are perpendicular to one another and disposed on opposite sides of the first wire snap feature.

2. The surgical instrument of claim 1, wherein the wire guide includes at least one guiding feature configured to receive the first electrical wire and guide the first electrical wire along the wire guide.

3. The surgical instrument according to claim 2, wherein the wire guide includes a plurality of guiding features spaced-apart on the wire guide.

4. The surgical instrument of claim 1, wherein the shaft attachment has a proximal end portion and distal end portion, wherein the proximal end portion of the shaft attachment includes the first wire snap feature.

5. The surgical instrument of claim 1, further including a second electrical wire extending from the housing, through the shaft, and into electrical communication with a second electrically-conductive tissue-treating surface of the end effector assembly, the second electrical wire adapted to connect to a source of energy and configured to supply energy to the second electrically-conductive tissue-treating surface, wherein the wire guide is configured to guide the second electrical wire from the housing into the shaft.

6. The surgical instrument according to claim 5, wherein the wire guide includes at least one guiding feature, each guiding feature configured to receive each of the first and second electrical wires.

7. The surgical instrument according to claim 6, wherein the wire guide includes a second wire snap feature, the first wire snap feature configured to receive the first electrical wire and the second wire snap feature configured to receive the second electrical wire.

8. The surgical instrument according to claim 7, wherein the first and second wire snap features are spaced-apart to maintain the first and second electrical wires in spaced-apart relation in the vicinity of the first and second wire snap features.

9. The surgical instrument of claim 8, wherein the first and second wire snap features each define a channel in direct communication with an interior of the proximal end of the shaft.

10. The surgical instrument of claim 1, wherein the wire guide further includes a housing attachment, the housing attachment engaging the wire guide to the housing.

11. The surgical instrument of claim 1, wherein the housing includes a longitudinally-extending barrel portion, and a fixed handle portion extending perpendicularly from the barrel portion, and the wire guide has a proximal portion aligned with the fixed handle portion, and a distal portion aligned with the barrel portion.

12. A surgical instrument, comprising:

a housing;

a shaft extending distally from the housing and defining a lumen therethrough;

an end effector assembly disposed at a distal end portion of the shaft;

a first electrical wire extending from the housing, through the shaft, and into electrical communication with the end effector assembly; and

a wire guide disposed within the housing, the wire guide including;

a body including a proximal end portion and a distal end portion;

a plurality of spaced-apart wire guiding features disposed on the body between the proximal and distal end portions thereof;

a shaft attachment disposed at the distal end portion of the body, the shaft attachment defining a passageway therethrough, the shaft having a proximal end received in the passageway; and

a first wire snap feature disposed on the shaft attachment and configured to secure a portion of the first electrical wire to the wire guide and direct the first electrical wire into the shaft, wherein the plurality of spaced-apart wire guiding features are configured to guide the first electrical wire along the body of the wire guide from the proximal end portion thereof to the distal end portion thereof, the body, the plurality of spaced-apart wire guiding features, the shaft attachment, and the first wire snap feature of the wire guide are integrally formed with one another, wherein the proximal end of the shaft has a bottom wall defining a cutout having the first electrical wire extending therethrough.

13. The surgical instrument of claim 12, further including a second electrical wire extending from the housing, through the shaft, and into electrical communication with the end effector assembly, wherein the wire guide is configured to guide the second electrical wire from the housing into the shaft.

14. The surgical instrument of claim 13, wherein the plurality of spaced-apart wire guiding features is configured to receive each of the first and second electrical wires.

15. The surgical instrument of claim 14, wherein the wire guide includes a second wire snap feature, wherein the first wire snap feature is configured to receive the first electrical wire and the second wire snap feature is configured to receive the second electrical wire.

16. The surgical instrument of claim 15, wherein the first and second wire snap features are spaced-apart to maintain the first and second electrical wires in spaced-apart relation to the vicinity of the first and second wire snap features.

17. The surgical instrument of claim 12, wherein the wire guide further includes a housing attachment, the housing attachment engaging the wire guide to the housing.