A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 18/14 (2006.01) A61B 18/12 (2006.01) A61B 17/00 (2006.01) A61B 17/072 (2006.01) A61B 17/128 (2006.01) A61B 17/34 (2006.01) A61B 18/08 (2006.01) A61B 17/39 (1995.01)
Patent
CA 2161422
An impedance feedback electrosurgical system (100) is useful with electrosurgical tools (104) to maintain a substantially constant level of current wihtin the tissue in contact with the tool. The system comprises active and return elechndes (108, 112) associated with an electrosurgical tool (104), an impedance monitoring device (116) and a power control unit (118). Energy sufficient to affect tissue is delivered through the active electrode (108) to tissue and to the return electrode (112). The impedance measuring device (116) is in circuit with the return electrodes (112) and measures the impedance of tissue. A signal representative of tissue impedance is communicated from the impedance measuring device (116) to the power control unit (118). The power control unit (118) adjusts the energy applied to tissue to maintain tissue impedance within a pre-selected and desired range.
Medical Scientific Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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