Surgical forceps with bifurcated flanged jaw components

• US 9,345,536 B2
• Filed: 12/22/2014
• Issued: 05/24/2016
• Est. Priority Date: 05/01/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Unger, Jeffrey R., Allen, James D. IV, Joseph, Daniel A.
• Primary Examiner(s): Schaetzle, Kennedy
• Application Number:
  US14/579,446
• Publication Number:
  US 20150112338A1
• Time in Patent Office: 519 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61B 17/2816 Pivots
• CPC Class Codes: A61B 17/285 combined with cutting implements
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• 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 2017/2947 Pivots
• 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 forceps includes an end effector assembly having first and second jaw members. Each jaw member includes a bifurcated proximal flange extending therefrom defining first and second spaced-apart flange components. The first flange components are pivotably engaged to one another via a first engagement portion and the second flange components are pivotably engaged to one another via a second engagement portion. One or both of the jaw members is pivotable relative to the other about the first and second engagement portions between an open position and a closed position for grasping tissue therebetween. A guide member is configured for positioning between the proximal flanges of the jaw members. The guide member includes a tab extending transversely therefrom that is configured to operably engaged one of the first and second engagement portions to retain the jaw members in engagement with one another.

Claims

1. An end effector assembly of a surgical instrument, comprising:

first and second jaw members, each of the jaw members including a proximal flange extending therefrom, each proximal flange defining a bifurcated configuration having first and second spaced-apart flange components, the first flange components of the first and second jaw members configured to pivotably engage one another via a first engagement portion and the second flange components of the first and second jaw members configured to pivotably engage one another via a second engagement portion independent of the first engagement portion, at least one of the first and second jaw members pivotable relative to the other about the first and second engagement portions between an open position and a closed position for grasping tissue therebetween.

2. The end effector assembly according to claim 1, wherein the first flange component of one of the first and second jaw members includes a first aperture defined transversely therethrough, and wherein the first flange component of the other of the first and second jaw members includes a boss, the boss configured for pivotable engagement within the first aperture.

3. The end effector assembly according to claim 2, wherein the second flange component of one of the first and second jaw members includes a second aperture defined transversely therethrough, and wherein the second flange component of the other of the first and second jaw members includes a boss, the boss configured for pivotable engagement within the second aperture.

4. The end effector assembly according to claim 1, wherein the proximal flanges are disposed in an overlapping, offset configuration relative to one another.

5. The end effector assembly according to claim 1, wherein the proximal flanges cooperate to define a lumen extending longitudinally therethrough.

6. The end effector assembly according to claim 1, wherein each of the first and second jaw members defines an opposed electrically-conductive tissue sealing surface, at least one of the electrically-conductive tissue sealing surfaces adapted to connect to a source of energy for treating tissue grasped between the first and second jaw members.

7. A forceps, comprising:

at least one shaft member;

an end effector assembly disposed at a distal end of the at least one shaft member, the end effector assembly including;

first and second jaw members, each of the jaw members including a proximal flange extending therefrom, each proximal flange defining a bifurcated configuration having first and second spaced-apart flange components, the first flange components of the jaw members configured to pivotably engage one another via a first engagement portion and the second flange components of the jaw members configured to pivotably engage one another via a second engagement portion independent of the first engagement portion, at least one of the first and second jaw members pivotable relative to the other about the first and second engagement portions between an open position and a closed position for grasping tissue therebetween.

8. The forceps according to claim 7, further including first and second shaft members, each of the first and second shaft members having one of the first and second jaw members disposed at a distal end thereof such that movement of the first and second shaft members relative to one another between a spaced-apart position and an approximated position effects movement of the first and second jaw members between an open position and a closed position for grasping tissue therebetween.

9. The forceps according to claim 7, further including a knife assembly disposed within the at least one shaft member, the knife assembly including a knife selectively translatable between a retracted position, wherein the knife is disposed within the at least one shaft member, and an extended position, wherein the knife is advanced between the first and second jaw members to cut tissue grasped therebetween.

10. The forceps according to claim 9, wherein the knife is configured to translate through a lumen defined between the proximal flanges.

11. The forceps according to claim 7, wherein the first flange component of one of the first and second jaw members includes a first aperture defined transversely therethrough, and wherein the first flange component of the other of the first and second jaw members includes a boss, the boss configured for pivotable engagement within the first aperture.

12. The forceps according to claim 11, wherein the second flange component of one of the first and second jaw members includes a second aperture defined transversely therethrough, and wherein the second flange component of the other of the first and second jaw members includes a boss, the boss configured for pivotable engagement within the second aperture.

13. The end effector assembly according to claim 7, wherein the proximal flanges are disposed in an overlapping, offset configuration relative to one another.

14. The forceps according to claim 7, wherein each of the first and second jaw members defines an opposed electrically-conductive tissue sealing surface, at least one of the electrically-conductive tissue sealing surfaces adapted to connect to a source of energy for treating tissue grasped between the first and second jaw members.