Vessel sealer and divider
DC CAFCFirst Claim
1. An electrosurgical instrument for performing at least one of sealing and dividing tissue, comprising:
- a housing having a shaft attached thereto;
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 which imparts movement of the jaw members between the first and second positions; and
a handle assembly attached to the housing which actuates the drive rod assembly, the handle assembly including a four-bar mechanical linkage designed to reciprocate the drive rod assembly to actuate the jaw members between the first and second positions, said four-bar mechanical linkage including two handles, a link and a rotating cam-like piston, the rotating cam-like piston, upon movement of the handles relative to one another, rotates to correspondingly translate the drive rod assembly to impart movement to the jaw members between the first and second positions.
5 Assignments
Litigations
0 Petitions
Accused Products
Abstract
A electrosurgical instrument includes a housing having a shaft attached thereto which connects a pair of first and second jaw members in an opposing manner relative to one another. The jaw members are movable relative to one another 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. The instrument also includes a handle assembly having a four-bar mechanical linkage which cooperates with a drive assembly to impart movement to the first and second jaw members from the first and second positions.
-
Citations
10 Claims
-
1. An electrosurgical instrument for performing at least one of sealing and dividing tissue, comprising:
-
a housing having a shaft attached thereto; 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 which imparts movement of the jaw members between the first and second positions; and a handle assembly attached to the housing which actuates the drive rod assembly, the handle assembly including a four-bar mechanical linkage designed to reciprocate the drive rod assembly to actuate the jaw members between the first and second positions, said four-bar mechanical linkage including two handles, a link and a rotating cam-like piston, the rotating cam-like piston, upon movement of the handles relative to one another, rotates to correspondingly translate the drive rod assembly to impart movement to the jaw members between the first and second positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. 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; first and second jaw members pivotally attached to the shaft in opposing relation relative to one another, the jaw members 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 which imparts movement of the jaw members between the first and second positions; a rotating assembly attached to the housing which rotates the jaw members about the longitudinal axis; a knife assembly attached to the housing which separates tissue; and a handle assembly attached to the housing which actuates the drive rod assembly, the handle assembly including a four-bar mechanical linkage designed to reciprocate the drive rod assembly to actuate the jaw members between the first and second positions, the handle assembly including two handles, a link and a rotating cam-like piston which cooperate with a spring to impart a uniform closure pressure against tissue grasped between the jaw members.
-
Specification