Vessel sealer an divider
First 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 for imparting movement of the jaw members between the first and second positions; and
a handle assembly attached to the housing for actuating the drive rod assembly, the handle assembly including a four-bar mechanical linkage.
5 Assignments
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 for imparting movement of the jaw members between the first and second positions; and
a handle assembly attached to the housing for actuating the drive rod assembly, the handle assembly including a four-bar mechanical linkage. - 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 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; and
a handle assembly attached to the housing for actuating the drive rod assembly, the handle assembly including a four-bar mechanical linkage which includes a handle and a cam-like piston which cooperate with a spring to impart a uniform closure pressure against tissue grasped between the jaw members.
-
Specification