A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/32 (2006.01) A61B 18/12 (2006.01) A61B 18/14 (2006.01) A61B 17/39 (1990.01)
Patent
CA 2110921
A surgical instrument (10) is described that incorporates bipolar electrodes on opposing shear- ing members (20, 30) 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 shear- ing 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 (21, 31). The insulating material has a higher hardness than the opposing members to reduce wear of the insulation and provide a self-sharpen- ing feature. Methods of simultaneously causing tis- sue and severing tissue are also provided. The use of a constant voltage high frequency power supply (110) to deliver current to the tissue to cause hemos- tasis is described in conjunction with those meth- ods.
Gowling Lafleur Henderson Llp
Vital Medical Products Corporation
LandOfFree
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