Insulating boot for electrosurgical forceps with exohinged structure

• US 8,235,993 B2
• Filed: 09/24/2008
• Issued: 08/07/2012
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Hushka, Dylan, Townsend, Jeffrey R.
• Primary Examiner(s): Mehta, Bhisma
• Application Number:
  US12/236,624
• Publication Number:
  US 20090088749A1
• Time in Patent Office: 1,413 Days
• Field of Search: 606/46, 606/47, 606/48, 606/49, 606/50, 606/51, 606/52, 606/206, 606/207, 606/205
• US Class Current: 606/51
• 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 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/00196 reciprocating lengthwise
• CPC Class Codes: A61B 2018/00589 Coagulation
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/1497 Electrodes covering only part of the probe circumference

Abstract

An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof that are movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle is included that actuates the shaft to move the jaw members relative to one another. One or both of the jaw members are adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. An insulating boot is disposed on at least a portion of an exterior surface of one or both jaw members, about the pivot and at a distal end of the shaft. The insulating boot includes an inner flexible portion and an outer shell that is operably engaged with one or both of the pair of jaw members.

Claims

1. An electrosurgical forceps, comprising:

a shaft having a pair of jaw members at a distal end thereof, the jaw members being movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue;

a movable handle that actuates the shaft to move the jaw members relative to one another;

at least one of the jaw members adapted to connect to a source of electrical energy such that the at least one jaw member is capable of conducting energy to tissue held therebetween; and

an insulating boot disposed on at least a portion of an exterior surface of at least one jaw member, about the pivot and at a distal end of the shaft, the insulating boot including an inner flexible portion and an outer shell, the outer shell being operably engaged with at least one of the pair of jaw members, wherein the inner flexible portion of the insulating boot includes an outer periphery that includes a non-stick material on at least a portion thereof to prevent the inner flexible portion from sticking to an inner periphery of the outer shell.

2. An electrosurgical forceps according to claim 1, wherein the outer shell includes a series of slits defined therearound, said slits being configured to facilitate radial expansion of the outer shell upon actuation of the shaft to move the jaw members.

3. An electrosurgical forceps according to claim 1, wherein the outer shell includes a latch portion at a distal end thereof that operatively engages the at least one of the pair of jaw members.

4. An electrosurgical forceps according to claim 1, wherein the outer shell includes a thermoplastic material.

5. An electrosurgical forceps according to claim 1, wherein the flexible inner portion includes silicone.

6. An electrosurgical forceps, comprising:

a shaft having a pair of jaw members at a distal end thereof, the jaw members being movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue;

a movable handle that actuates the shaft to move the jaw members relative to one another;

at least one of the jaw members adapted to connect to a source of electrical energy such that the at least one jaw member is capable of conducting energy to tissue held therebetween; and

an insulating boot disposed on at least a portion of an exterior surface of at least one jaw member, about the pivot and at a distal end of the shaft, the insulating boot including an inner flexible portion and an outer shell, the outer shell being operably engaged with at least one of the pair of jaw members, wherein the inner flexible portion of the insulating boot includes an adhesive at a distal end thereof that secures the inner flexible portion to the outer shell.

7. An electrosurgical forceps according to claim 6, wherein the outer shell includes a series of slits defined therearound, said slits being configured to facilitate radial expansion of the outer shell upon actuation of the shaft to move the jaw members.

8. An electrosurgical forceps according to claim 6, wherein the outer shell includes a latch portion at a distal end thereof that operatively engages the at least one of the pair of jaw members.

9. An electrosurgical forceps according to claim 6, wherein the outer shell includes a thermoplastic material.

10. An electrosurgical forceps according to claim 6, wherein the flexible inner portion includes silicone.