Silicone insulated electrosurgical forceps

• US 8,236,025 B2
• Filed: 09/23/2008
• 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, Guerra, Paul
• Primary Examiner(s): Mehta, Bhisma
• Application Number:
  US12/236,076
• Publication Number:
  US 20090088741A1
• Time in Patent Office: 1,414 Days
• Field of Search: 606/46, 606/47, 606/48, 606/49, 606/50, 606/51, 606/52, 606/206, 606/207
• US Class Current: 606/207
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• 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

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 a drive assembly to move the jaw members relative to one another. One or both of the jaw members is adapted to connect to a source of electrical energy to conduct energy to tissue held therebetween. A flexible insulating boot is disposed on at least a portion of an exterior surface of one or both jaw members and about the pivot. The flexible insulating boot includes an internal cavity defined therein that retains a free-flowing material therein configured to disperse from the internal cavity when ruptured.

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 a drive assembly to move the jaw members relative to one another;

at least one of the jaw members including at least one mechanical interface and at least one jaw member being 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

a flexible insulating boot disposed on at least a portion of an exterior surface of at least one jaw member and about the pivot, the flexible insulating boot including an internal cavity defined therein which retains a free flowing material therein, the free flowing material being configured to disperse from the internal cavity when the internal cavity is ruptured, wherein the free flowing material is configured to include a first solid state and a second liquid state, the solid state transitioning to a liquid state upon application of at least one of heat and UV energy.

2. An electrosurgical forceps according to claim 1 wherein the free flowing material includes at least one of an adhesive material, insulating material, and lubricating material.

3. An electrosurgical forceps according to claim 1, wherein the free flowing material includes a high resistance adhesive material.

4. An electrosurgical forceps according to claim 1 wherein the free-flowing material is disposed in a distal portion of the flexible insulating boot.

5. An electrosurgical forceps according to claim 1 wherein the free-flowing material is disposed in a proximal portion of the flexible insulating boot.

6. An electrosurgical forceps according to claim 1 wherein the internal cavity is an annular cavity.

7. An electrosurgical forceps according to claim 1 wherein the internal cavity is a longitudinal cavity.

8. An electrosurgical forceps, comprising:

a shaft having a pair of jaw members at a distal end thereof, the jaw members 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 operably coupled to a drive assembly to move the jaw members relative to one another between the first and second positions;

at least one of the jaw members including at least one mechanical interface and at least one jaw member being 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 between the jaw members; and

a flexible insulating boot disposed on at least a portion of an exterior surface of at least one jaw member and about the pivot, the flexible insulating boot including an internal cavity defined therein configured to retain a free flowing material therein, the free flowing material configured to disperse from the internal cavity when the internal cavity is ruptured, wherein the free-flowing material includes a high resistance adhesive material.

9. The electrosurgical forceps of claim 8, wherein the free flowing material further includes an insulating material, lubricating material, or other adhesive material.

10. An electrosurgical forceps according to claim 8 wherein the free-flowing material is configured to include a first solid state and a second liquid state, the solid state transitioning to a liquid state upon application of heat or UV energy.

11. An electrosurgical forceps according to claim 8 wherein the free-flowing material is disposed in a distal portion of the flexible insulating boot.

12. An electrosurgical forceps according to claim 8 wherein the free-flowing material is disposed in a proximal portion of the flexible insulating boot.

13. An electrosurgical forceps according to claim 8 wherein the internal cavity is an annular cavity.

14. An electrosurgical forceps according to claim 8 wherein the internal cavity is a longitudinal cavity.