Spring loaded reciprocating tissue cutting mechanism in a forceps-style electrosurgical instrument
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United States of America Patent
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Mar 10, 2009
Grant Date -
Apr 6, 2006
app pub date -
Oct 3, 2005
filing date -
Nov 19, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Open electrosurgical forceps for sealing tissue which include a pair of first and second shaft portions each having a jaw member disposed at a distal end thereof. Each of the jaw members includes an electrically conductive sealing surface which communicates electrosurgical energy through tissue held therebetween with at least one of the jaw members including a knife slot defined along a length thereof. The knife slot is dimensioned to reciprocate a knife blade therefrom. The forceps also have a cutting mechanism which selectively actuates the knife blade from a first position wherein the knife blade is disposed at least substantially entirely within the knife slot of the jaw member to at least one subsequent position wherein the knife blade is at least partially deployed from the knife slot of the jaw member. The knife blade is displaceable in a direction transverse to a longitudinal axis of the forceps.
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