Electrosurgical systems and techniques for sealing tissue
US6656177B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 19, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Feb 19, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical instrument and technique for creating thermal seal or welds transected margins of engaged tissue. The working end provides very elongate jaws particularly suited for resecting tissue, such as in a lung resection. The jaw assembly carries a bi-polar electrode arrangement that provides for Rf current flow to targeted tissue described as a subfascial-to-fascial (or medial-to-surface) bi-polar approach. The working end of the device carries an openable and closable jaw assembly with paired first and second jaws for engaging tissue. The paired jaws have an axial channel for receiving a sliding (blade) member for transecting the captured tissue. The paired jaws carry electrode surfaces having a common polarity so that Rf current will not flow d between the jaws which engage the surface or fascial tissue layers. Further, the transecting member had flange-type surface portions that extend over a substantial longitudinal length of the jaws to maintain very high compression on captured tissue even when the jaws have a very small cross section and hence may be somewhat flexible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.