System and method for control of tissue welding

The present invention is related to bonding or welding of soft tissue and, more particularly, to a system and method for controlling tissue welding. A system and method for welding of biological tissue by applying an RF voltage during a first stage to electrodes of a tissue welding tool; monitoring...

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Bibliographic Details
Main Authors Paton, Boris E, Lebedev, Vladimir K, Lebedev, Alexei V, Masalov, Yurii A, Ivanova, Olga N, Zakharash, Mykhailo P, Furmanov, Yuri A
Format Patent
LanguageEnglish
Published 11.05.2004
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Summary:The present invention is related to bonding or welding of soft tissue and, more particularly, to a system and method for controlling tissue welding. A system and method for welding of biological tissue by applying an RF voltage during a first stage to electrodes of a tissue welding tool; monitoring tissue impedance, and determining a minimum tissue impedance value during the first stage; determining relative tissue impedance; detecting when the relative tissue impedance reaches a predetermined relative tissue impedance value and starting a second stage; calculating the duration of the second stage as a function of the duration of the first stage; and applying the RF voltage during the second stage to the electrodes of the tissue welding tool.