Surgical forceps

• US 9,034,009 B2
• Filed: 05/01/2012
• Issued: 05/19/2015
• Est. Priority Date: 05/01/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Twomey, John R., Allen, James D. IV, Brandt, Kim V., Hart, Keir, Joseph, Daniel A., Unger, Jeffrey R.
• Primary Examiner(s): McEvoy, Thomas
• Assistant Examiner(s): SZPIRA, JULIE ANN
• Application Number:
  US13/461,410
• Publication Number:
  US 20130296923A1
• Time in Patent Office: 1,113 Days
• Field of Search: 606/174, 606/205, 606/208
• US Class Current: 606/205
• CPC Class Codes: A61B 17/2812 with a single pivotal connection A61B17/29 takes precedence
• CPC Class Codes: A61B 17/2816 Pivots
• CPC Class Codes: A61B 17/285 combined with cutting implements
• 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 2018/00077 high, i.e. electrically conducting
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/00345 Vascular system
• 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 of the jaw members includes a proximal flange extending therefrom. Each of the proximal flanges defines a bifurcated configuration having first and second spaced-apart flange components. The first flange component of the first jaw member is configured to pivotably engage the second flange component of the second jaw member via a first protrusion-aperture coupling. The first flange component of the second jaw member is configured to pivotably engage the second flange component of the first jaw member via a second protrusion-aperture coupling different from the first protrusion-aperture coupling. One or both of the jaw members is pivotable relative to the other about the first and second protrusion-aperture couplings between a spaced-apart position and an approximated position for grasping tissue therebetween.

Claims

1. A forceps, comprising:

an 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 component of the first jaw member having a protrusion extending outwardly therefrom configured to pivotably engage an aperture defined in the second flange component of the second jaw member via a first protrusion-aperture coupling and the first flange component of the second jaw member having a protrusion extending outwardly therefrom configured to pivotably engage an aperture defined in the second flange component of the first jaw member via a second protrusion-aperture coupling different from the first protrusion-aperture coupling, at least one of the first and second jaw members pivotable relative to the other about the first and second protrusion-aperture couplings between a spaced-apart position and an approximated position for grasping tissue therebetween.

2. The forceps according to claim 1, wherein the proximal flanges are disposed in an overlapping, offset configuration relative to one another.

3. The forceps according to claim 1, wherein the proximal flanges are formed via molding.

4. The forceps according to claim 1, wherein each of the proximal flanges is monolithically formed with the respective jaw member thereof via molding.

5. The forceps according to claim 1, wherein the proximal flanges are formed from an electrically-insulative material.

6. The forceps according to claim 1, wherein the proximal flanges each define a channel extending longitudinally therethrough, the channels of the proximal flanges cooperating with one another to permit reciprocation of a drive sleeve therethrough for moving the jaw members between the spaced-apart and approximated positions.

7. The forceps according to claim 1, further comprising a knife assembly operatively coupled to the end effector assembly, the knife assembly including a knife that is selectively translatable between a retracted position and an extended position, wherein the knife is advanced between the jaw members to cut tissue grasped therebetween.

8. The forceps according to claim 7, wherein the proximal flanges each define a channel extending longitudinally therethrough, the channels of the proximal flanges cooperating with one another to permit reciprocation of the knife therethrough for cutting tissue grasped between the jaw members.

9. The forceps according to claim 1, wherein each of the jaw members includes an electrically-conductive tissue sealing plate disposed thereon, at least one of the sealing plates adapted to connect to a source of energy for conducting energy through tissue grasped therebetween to treat tissue.

10. A forceps, comprising:

a shaft having an end effector assembly disposed at a distal end thereof, the shaft including first and second opposed, transverse shaft apertures defined within an outer periphery thereof, the end effector assembly, including;

first and second jaw members pivotable relative to one another between a spaced-apart position and an approximated position for grasping tissue therebetween, 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 component of the first jaw member including a protrusion extending outwardly therefrom that is configured for pivotable engagement within a transverse aperture defined through the second flange component of the second jaw member, the first flange component of the second jaw member including a protrusion extending outwardly therefrom that is configured for pivotable engagement within a transverse aperture defined through the second flange component of the first jaw member, at least a portion of each of the protrusions configured to extend outwardly from the respective transverse aperture engaged therewith, the at least a portion of each protrusion configured for pivotable engagement within one of the shaft apertures for engaging the first and second jaw members to the shaft.

11. The forceps according to claim 10, wherein the proximal flanges are disposed in an overlapping, offset configuration relative to one another.

12. The forceps according to claim 10, wherein each of the proximal flanges is monolithically formed with the respective jaw member thereof via molding.

13. The forceps according to claim 10, wherein the proximal flanges are formed from an electrically-insulative material.

14. The forceps according to claim 10, wherein the proximal flanges each define a channel extending longitudinally therethrough, the channels of the proximal flanges cooperating with one another to permit reciprocation of a drive sleeve therethrough for moving the jaw members between the spaced-apart and approximated positions.

15. The forceps according to claim 10, further comprising a knife assembly operatively coupled to the end effector assembly, the knife assembly including a knife that is selectively translatable between a retracted position and an extended position, wherein the knife is advanced between the jaw members to cut tissue grasped therebetween.

16. The forceps according to claim 15, wherein the proximal flanges each define a channel extending longitudinally therethrough, the channels of the proximal flanges cooperating with one another to permit reciprocation of the knife therethrough for cutting tissue grasped between the jaw members.