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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0825842 (1997-04-04) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 964 인용 특허 : 18 |
An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one interfacing
An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between one pole of a bipolar energy source located on one interfacing surface, and a second interfacing surface. A second pole is located one of the two interfacing surfaces. In a preferred embodiment, the second pole is located on the same interfacing surface as the first pole and an insulator electrically isolates the two poles. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
[ What is claimed is:] [1.] An electrosurgical instrument comprising:a shaft having a distal end;an end effector located at the distal end of the shaft, said end effector adapted to receive electrosurgical energy therein, said end effector comprising:first and second pivotally connected elements com
[ What is claimed is:] [1.] An electrosurgical instrument comprising:a shaft having a distal end;an end effector located at the distal end of the shaft, said end effector adapted to receive electrosurgical energy therein, said end effector comprising:first and second pivotally connected elements comprising first and second opposed tissue contacting surfaces respectively, said surfaces moveable relative to each other from an open, spaced-apart position for positioning tissue therebetween, to a closed position for approximating the tissue, at least a portion of one of said surfaces being an elongated electrical conductor at least partially surrounded by electrically insulating regions which form a second portion on said surface and said electrical conductor being arranged to receive the electrosurgical energy, and each of said first and second opposed tissue contacting surfaces having a proximal and distal portion and a longitudinal axis extending proximal to distal through said end effector wherein said elongated electrical conductor is arranged to be substantially parallel to said longitudinal axis;a first channel formed in said first surface,a second channel formed in said second surface, wherein said first and second channels form an enclosed cutting path when said surfaces are in said closed position, a cutting element moveable along said cutting path in a direction from the proximal to distal portions of said surfaces to cut tissue positioned between said surfaces, wherein said cutting path is enclosed by said first and second elements.
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