Electrosurgical instrument and method
First Claim
1. A surgical instrument for delivery electrosurgical energy and having a working end, comprising:
- openable-closeable first and second jaw members having curved distal portions that close about a curved axis;
a reciprocatable member having an I-beam cross-section configuration that is axially moveable in a channel in the jaw members between a first non-extended position and second extended position wherein flanges of the I-beam slidably engage outward-facing surfaces of the jaw members to move the jaw members from an open position to a closed position; and
a flexible tissue-cutting member that is axially moveable relative to the jaw members between a first non-extended position and a second extended position that extends distally beyond the second position of the I-beam member.
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0 Petitions
Accused Products
Abstract
An electrosurgical working end and method for sealing and transecting tissue. An exemplary working end provides curved jaw members that are positioned on opposing sides of the targeted anatomic structure. The working end carries a slidable extension member having flange portions with inner surfaces that slide over the jaw members to clamp tissue therebetween. The working end carries an independent slidable cutting member that is flexible to follow the curved axis of the jaws. The electrosurgical surfaces of the jaws include partially-resistive bodies for carrying a current or load which modulates ohmic heating in the engaged tissue to prevent charring and desiccation of tissue to create a high strength thermal seal.
501 Citations
7 Claims
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1. A surgical instrument for delivery electrosurgical energy and having a working end, comprising:
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openable-closeable first and second jaw members having curved distal portions that close about a curved axis; a reciprocatable member having an I-beam cross-section configuration that is axially moveable in a channel in the jaw members between a first non-extended position and second extended position wherein flanges of the I-beam slidably engage outward-facing surfaces of the jaw members to move the jaw members from an open position to a closed position; and a flexible tissue-cutting member that is axially moveable relative to the jaw members between a first non-extended position and a second extended position that extends distally beyond the second position of the I-beam member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification