Surgery – Instruments – Electrical application
Patent
1995-07-07
2000-02-01
Cohen, Lee
Surgery
Instruments
Electrical application
606 32, 606 40, 606135, A61B 1736
Patent
active
060197579
ABSTRACT:
An apparatus and method for occluding a lumen, such as a vessel, in a mammal using alternating current and monitoring reflected power from the occlusion site to determine vessel constriction and/or electrocoagulation. The apparatus is provided with an alternating current (AC) power generator, a first electrode electrically coupled to the generator, a dispersive electrode electrically coupled to the generator and forming in-part with the generator and the first electrode a drive circuit and a reflected power monitoring circuit coupled to the drive circuit for monitoring power reflected back toward the generator from the first electrode. With this construction, occlusion and/or thermocoagulation can be accurately detected so that the power delivered to the first electrode when positioned in the mammal can be terminated. In this manner, the risk of overheating tissue in the vicinity of the constricted vessel is minimized or eliminated.
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Cohen Lee
Target Therapeutics Inc.
Yarnell Bryan K.
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