An improved 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 on one of the two interfacing surfaces. In a preferred embodiment, the second pole is located on the same interfacin g 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.
申请公布号
CA2233820(C)
申请公布日期
2007.01.16
申请号
CA19982233820
申请日期
1998.04.02
申请人
ETHICON ENDO-SURGERY, INC.
发明人
YATES, DAVID C.;VOEGELE, JAMES W.;MERSCH, STEVEN H.;KUHNS, JESSE;WILLIAMSON, WARREN P., IV;NALAGATLA, ANIL;NUCHOLS, RICHARD P.;MADDEN, MARTIN