Large volume tissue reduction and removal system and method
US9522034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2015 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Jul 21, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1475
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tissue removal system for extracting a tissue specimen from a patient is disclosed. The system has a retrieval bag, a first electrode, and a return electrode. The retrieval bag has a flexible container with an opening. The first electrode is coupled to an interior of the flexible container, and has a conductive wire with an exposure area, a first load-bearing area, a coating having a first active electrode surface area, and an impedance that is greater than an impedance of the conductive wire. The first active electrode surface area is less than the exposure area. The coating is configured to degrade during application of electrosurgical power and wherein the degradation expands the first active electrode surface area during the application of the electrosurgical power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.