Title:
インピーダンスフィードバック電気外科用システム
Document Type and Number:
Japanese Patent JP3585491
Kind Code:
B2
Abstract:
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 electrodes (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.
Inventors:
Nadera, Paul Sea.
Application Number:
JP52451494A
Publication Date:
November 04, 2004
Filing Date:
April 29, 1994
Export Citation:
Assignee:
Medical Scientific Incorporated
International Classes:
A61B18/12; A61B18/14; A61B17/00; A61B17/072; A61B17/128; A61B17/34; A61B18/08; (IPC1-7): A61B18/12
Domestic Patent References:
| JP4030509U | ||||
| JP4051176B2 | ||||
| JP59077844A | ||||
| JP7505325A |
Attorney, Agent or Firm:
Motohiro Kurauchi
Hiroshi Kazama
Hiroshi Kazama