Electrosurgical apparatus and methods for treating tissue
US6589237B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Electrosurgical methods and apparatus for removing tissue from a target site of a patient. An electrosurgical suction apparatus includes an aspiration channel in communication with a distal aspiration port, and an electrode support having a plurality of active electrodes disposed thereon, the plurality of active electrodes spanning the aspiration port. Each of the plurality of active electrodes is adapted for removing tissue from a target site to form low molecular weight ablation by-products. Each of the plurality of active electrodes is also adapted for digesting resected tissue fragments to yield low molecular weight ablation by-products. Ablation by-products and resected tissue fragments are readily removed from the target site via an aspiration stream flowing proximally through the aspiration channel. In one embodiment, each of a plurality of active electrodes protrude in different directions from a beveled treatment surface of the electrode support, and each of the plurality of active electrodes extend from the beveled treatment surface by substantially the same orthogonal distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.