Surgical instrument
US8343148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Nov 13, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for morcellating tissue within a body cavity of a patient comprises a stationary tube having a distal end portion, and a bipolar electrosurgical electrode assembly located at the distal end of the tube. The electrosurgical electrode assembly comprises first and second electrodes separated by an insulation member. When an electrosurgical cutting voltage is applied to the electrode assembly, and relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The tube comprises a twin-walled construction with an inner wall, an outer wall and an air gap therebetween. This twin-walled construction reduces the heat that is able to travel proximally along the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.