A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 18/14 (2006.01) A61B 17/00 (2006.01) A61B 18/00 (2006.01) A61M 1/00 (2006.01)
Patent
CA 2211183
The invention features a bipolar electrosurgical apparatus having a first electrode (14) that has a relatively large surface area for creating a diffuse current sufficient to heat a region of tissue to coagulation temperatures, and a second electrode (12) that has a relatively small surface area for creating a concentrated current region sufficient to heat tissue adjacent to the second electrode (12) to resection temperatures. The first and second electrodes (12, 14) are relatively positioned along a treatment path, such that tissue is coagulated and resected as the electrosurgical apparatus is disposed along the path.
L'invention concerne une appareil électrochirurgical bipolaire doté d'une première électrode (14), dont la surface relativement étendue permet de produire un courant diffus suffisant pour porter une zone de tissu aux températures de coagulation, et une seconde électrode (12), dont la surface relativement peu étendue permet de créer une région de courant concentré suffisante pour porter aux températures de résection le tissu contigu à cette deuxième électrode (12). Les deux électrodes (12, 14) occupent une position relative le long du trajet retenu pour le traitement, de sorte que le tissu puisse être soumis à coagulation et résection alors que l'appareil électrochirurgical est placé sur ce trajet.
Lennox Charles D.
Moreci Stephen F.
Boston Scientific Corporation
Smart & Biggar
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