Movable handle for vessel sealer

• US 20090292282A9
• Filed: 11/18/2004
• Published: 11/26/2009
• Est. Priority Date: 04/06/2001
• Status: Abandoned Application

• Current Assignee: Sherwood Services AG
• Original Assignee: Sherwood Services AG
• Inventors: Dycus, Sean
• Application Number:
  US10/991,975
• Publication Number:
  US 20050149017A1
• Time in Patent Office: Days
• 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 2018/00916 with means for switching or controlling the main function of the instrument or device

Abstract

Bipolar forceps are provided including a shaft having opposing jaw members at a distal end thereof, the shaft defining a longitudinal axis; a drive assembly for moving the jaw members relative to one another 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 cooperate to grasp tissue therebetween; and a handle assembly operatively connected to a proximal end of the shaft. The handle assembly includes a first handle and a second handle, wherein the handle assembly is pivotable between a first position in which handle assembly is angled with respect to the longitudinal axis and a second position in which the handle assembly is substantially axially aligned with the longitudinal axis.

Claims

1. A bipolar forceps, comprising:

a shaft having opposing jaw members at a distal end thereof, the shaft defining a longitudinal axis;

a drive assembly for moving the jaw members relative to one another 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 cooperate to grasp tissue therebetween; and

a handle assembly operatively connected to a proximal end of the shaft, the handle assembly including;

a first handle and a second handle, wherein the handle assembly is pivotable between a first position in which handle assembly is angled with respect to the longitudinal axis and a second position in which the handle assembly is substantially axially aligned with the longitudinal axis.

2. The forceps according to claim 1, wherein the second handle is selectively movable from a first position in spaced relation relative to the first handle and a second position in relatively close proximity to the first handle.

3. The forceps according to claim 2, wherein movement of the second handle between the first and second positions imparts movement of the jaw members between the first and second positions.

4. The forceps according to claim 3, further comprising a rotating assembly for rotating the jaw members about the longitudinal axis.

5. The forceps according to claim 4, further comprising a source of electrical energy connected to each jaw member such that the jaw members are capable of conducting energy through tissue held therebetween to effect a seal.

6. The forceps according to claim 5, further comprising a generally tube-like cutter slidably engaged about said elongated shaft which is selectively movable about the elongated shaft to engage and cut tissue on at least one side of the jaw members while the tissue is engaged between the jaw members.

7. The forceps according to claim 6, further comprising opposing electrically conductive sealing surfaces disposed on inner facing surfaces of the jaw members.

8. The forceps according to claim 7, wherein at least one of the jaw members is made from a hard anodized aluminum having high dielectric properties.

9. The forceps according to claim 8, wherein the handle assembly is dimensioned to maintain a closure pressure in the range of about 3 kg/cm² to about 16 kg/cm² between the electrically conductive sealing surfaces.

10. The forceps according to claim 9, wherein the electrically conductive sealing surfaces include a non-stick coating disposed thereon which is designed to reduce tissue adherence.

11. The forceps according to claim 10, further comprising at least one non-conductive stop which creates a gap between the electrically conductive sealing surfaces within the range of about 0.001 inches to about 0.006 inches.

12. An electrosurgical instrument for performing at least one of sealing and dividing tissue, comprising:

a housing having a shaft attached thereto, the shaft defining a longitudinal axis;

a first jaw member movable relative to a second jaw member, the first jaw member attached to the shaft and being relatively movable from a first open position wherein the jaw members are disposed in spaced relation relative to one another to a second closed position wherein the jaw members cooperate to grasp tissue therebetween;

a drive rod assembly for imparting movement of the jaw members between the first and second positions;

a rotating assembly attached to the housing for rotating the jaw members about the longitudinal axis;

a knife assembly attached to the housing for separating tissue grasped between the jaw members;

a handle assembly pivotally attached to the housing for actuating the drive rod assembly, the handle assembly including;

a first handle and a second handle, wherein the handle assembly is pivotable between a first position in which handle assembly is angled with respect to the longitudinal axis and a second position in which the handle assembly is substantially axially aligned with the longitudinal axis;

first and second electrical leads which connect the jaw members to a source of electrical energy such that the jaw members are capable of conducting energy through tissue held therebetween; and

a handswitch attached to the housing which allows a user to selectively energize the jaw members.

13. The electrosurgical instrument according to claim 12, further comprising a source of electrical energy connected to each jaw member such that the jaw embers are capable of conducting energy through tissue held therebetween to effect a seal.

14. The electrosurgical instrument according to claim 13, wherein the second handle is selectively movable from a first position in spaced relation relative to the first handle and a second position in relatively close proximity to the first handle.

15. The electrosurgical instrument according to claim 14, wherein movement of the second handle between the first and second positions imparts movement of the jaw members between the first and second positions.

16. The electrosurgical instrument according to claim 15, further comprising a generally tube-like cutter slidably engaged about said elongated shaft which is selectively movable about the elongated shaft to engage and cut tissue on at least one side of the jaw members while the tissue is engaged between the jaw members.

17. The electrosurgical instrument according to claim 16, further comprising opposing electrically conductive sealing surfaces disposed on inner facing surfaces of the jaw members.

18. The electrosurgical instrument according to claim 17, wherein at least one of the jaw members is made from a hard anodized aluminum having high dielectric properties.

19. The electrosurgical instrument according to claim 18, wherein the handle assembly is dimensioned to maintain a closure pressure in the range of about 3 kg/cm² to about 16 kg/cm² between the electrically conductive sealing surfaces.

20. The electrosurgical instrument according to claim 19, further comprising at least one non-conductive stop which creates a gap between the electrically conductive sealing surfaces within the range of about 0.001 inches to about 0.006 inches.

21. A bipolar forceps, comprising:

a shaft having opposing jaw members at a distal end thereof and a drive assembly for moving the jaw members relative to one another 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 cooperate to grasp tissue therebetween; and

a multi-position handle assembly operatively connected to a proximal end of the shaft, the handle assembly pivotable between a first and at least a second gripping position for actuating the drive assembly to move the jaw members.

22. The bipolar forceps according to claim 21, further comprising a source of electrosurgical energy electrically connected to the jaw members such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal.

23. The bipolar forceps according to claim 22, further comprising a rotating assembly for rotating the jaw members about a longitudinal axis defined by the shaft.