Method and apparatus for the high frequency coagulation of protein for surgical purposes
Patent 4474179 Issued on October 2, 1984. Estimated Expiration Date: 
May 13, 2002. 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.
May 13, 2002. 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 ReferencesInsertion detecting probe and electrolysis system Impedance sensing epilator Patent #: 4372315 InventorAssigneeApplicationNo. 06/377932 filed on 05/13/1982US Classes:606/40, Coagulation606/38With feed back controlExaminersPrimary: Cohen, Lee S.Attorney, Agent or FirmInternational ClassA61B 18/12 (20060101)Foreign Application Priority Data1981-05-20 DEAbstractIn the arrangement according to the invention for the high frequency coagulation of protein, in particular for surgical purposes, the protein impedance is continuously determined during application of high frequency power and the differential quotient for the impedance curve is formed according to time. The values of the differential quotient serve on the one hand for adjusting the initial power and on the other hand for establishing the optimal time for switching off the high frequency power. For both situations, provision is made for presettings making the arrangement according to the invention flexible and simple to adapt. The arrangement is preferably intended for bipolar coagulation instruments but use with unipolar instruments is also possible. | |
