Surgery – Instruments – Electrical application
Patent
1994-05-03
1996-03-05
Rimell, Sam
Surgery
Instruments
Electrical application
606 46, 128751, A61B 1700
Patent
active
054963176
ABSTRACT:
A laparoscopic surgical instrument which may be in the form of forceps or a cutter has, at the end of a hollow tube for introduction through the body cavity wall, a housing, a pair of pivotally mounted metallic jaws, a reciprocable control rod in the tube, and an actuator secured to the control rod. The actuator has a pair of guide grooves which are oppositely inclined with respect to a longitudinal axis of the instrument, and each jaw has a lug which fits in a respective groove, the lugs being spaced from the jaw pivots so that reciprocation of the control rod causes opening and closing of the jaws. The housing and the actuator are electrically insulating and the jaw pivots are spaced apart to achieve electrical isolation of one jaw from the other, for applying a radio frequency voltage across the jaws for bipolar electrosurgery.
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Goble Colin C. O.
Goble Nigel M.
Gyrus Medical Limited
Rimell Sam
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