Electrosurgical hemostatic device with recessed and/or offset electrodes
US5688270A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Jan 18, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/032
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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 an electrode associated with a first pole of a bipolar energy source located on one interfacing surface off a first element, and a second interfacing surface of a second element. The first and second elements are used to engage and compress tissue between the first and second interfacing surfaces. A second electrode associated with a second pole is located one of the two interfacing surfaces. The first electrode is either recessed into the first tissue contacting surface and/or offset from the second electrode on the same or opposing surfaces. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.