Surgery – Instruments – Electrical application
Patent
1992-05-01
1994-06-28
Green, Randall L.
Surgery
Instruments
Electrical application
606 49, 606 32, 606 34, 606 37, A61B 1739
Patent
active
053242890
ABSTRACT:
A surgical instrument is described that incorporates bipolar electrodes on opposing shearing members for passing a high frequency current through the tissue for causing hemostasis of the tissue and for cutting the tissue. An electrically insulating material is interposed between the shearing members so that the electrodes are spaced apart from 0.002 to 0.050 inches and the current passes between the opposing electrodes through the tissue and not between the opposing shearing surfaces. The insulating material has a higher hardness than the opposing members to reduce wear of the insulation and provide a self-sharpening feature. Methods of simultaneously causing tissue and severing tissue are also provided. The use of a constant voltage high frequency power supply to deliver current to the tissue to cause hemostasis is described in conjunction with those methods.
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Green Randall L.
Hemostatic Surgery Corporation
Pisano Nicola A.
Zuttarelli P.
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