Microwave coagulating scalpel
Patent 4534347 Issued on August 13, 1985. Estimated Expiration Date: 
April 8, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 8, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re29088 3089496 3786814 3826263 3903891 Electrosurgical devices having sesquipolar electrode structures incorporated therein Combined electrosurgery/cautery system and method Coaxial applicator for microwave hyperthermia Method for cutting and coagulating tissue Apparatus for localized heating of a living tissue, using electromagnetic waves of ultra high frequency, for medical applications InventorAssigneeApplicationNo. 06/483219 filed on 04/08/1983US Classes:606/33Electromagnetic wave irradiationExaminersPrimary: Cohen, Lee S.Attorney, Agent or FirmInternational ClassesA61B 17/32 (20060101)A61B 18/18 (20060101) A61B 17/00 (20060101) AbstractA microwave coagulating scalpel which simultaneously severs and coagulates highly vascular tissue is disclosed. The scalpel blade forms both a cutting edge and a microwave radiator loop, with the diameter of the loop related to the wave length of the microwave frequency, when the microwave energy is propogated in highly vascular tissue. A range of 100 MHz to 13,000 MHz is disclosed with preferential frequencies at 915 MHz, 2450 MHz and 5800 MHz. A bolometer and threshold switch to de-energize the microwave source when the blade is removed from the highly vascular tissues also is disclosed.Other References
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