Vessel sealer and divider for large tissue structures
First Claim
1. A bipolar forceps, comprising:
- a housing;
a shaft affixed to the housing having jaw members at a distal end thereof, the shaft having a longitudinal axis defined therethrough, the jaw members adapted to connect to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal;
a drive assembly that moves 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 are closer to one another for manipulating tissue;
a movable handle rotatable about a pivot to force a drive flange of the drive assembly to move the jaw members between the first and second positions, the pivot located a fixed distance above the longitudinal axis and the drive flange located generally along the longitudinal axis; and
a knife assembly having a movable knife rod that operatively engages a knife blade, the knife rod having a first longitudinal section having a first predetermined shape and a second longitudinal section having a second predetermined shape, wherein the first and second longitudinal sections are separated by a third longitudinal section having a circular cross-section and the first predetermined shape is different than the second predetermined shape such that at least a onion of a profile of the knife rod increases from a proximal end thereof toward a distal end thereof.
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Accused Products
Abstract
An endoscopic bipolar forceps includes a housing having a shaft affixed thereto, the shaft including jaw members at a distal end thereof. The shaft includes jaw members adapted to connect to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. The forceps include a drive assembly that moves the jaw members relative to one another from a first position to a second position for manipulating tissue. A movable handle is included that is rotatable about a pivot. A knife assembly is also included having a movable knife rod to operatively engage a knife blade, the knife rod having a first longitudinal section having a first predetermined shape, and a second longitudinal section having a second predetermined shape. The first predetermined shape is different than the second predetermined shape.
1118 Citations
20 Claims
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1. A bipolar forceps, comprising:
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a housing; a shaft affixed to the housing having jaw members at a distal end thereof, the shaft having a longitudinal axis defined therethrough, the jaw members adapted to connect to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal; a drive assembly that moves 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 are closer to one another for manipulating tissue; a movable handle rotatable about a pivot to force a drive flange of the drive assembly to move the jaw members between the first and second positions, the pivot located a fixed distance above the longitudinal axis and the drive flange located generally along the longitudinal axis; and a knife assembly having a movable knife rod that operatively engages a knife blade, the knife rod having a first longitudinal section having a first predetermined shape and a second longitudinal section having a second predetermined shape, wherein the first and second longitudinal sections are separated by a third longitudinal section having a circular cross-section and the first predetermined shape is different than the second predetermined shape such that at least a onion of a profile of the knife rod increases from a proximal end thereof toward a distal end thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification