RF ablation device with jam-preventing electrical coupling member
US8241276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Mar 19, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1475
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The inventive ablation element comprises an elongated cannula having a proximal end and a distal end. The cannula defines an internal lumen within the cannula and a cannula axis. A plurality of conductors contained within the lumen, each of the conductors has a proximal end proximate the proximal end of the cannula, and a distal end proximate the distal end of the cannula. A plurality of ablation stylets each has a proximal end and a distal end, and each coupled at the respective proximal end of the stylet to the distal end of a respective conductor, the stylets comprise a deflectable material, the conductors together with their respective stylets being mounted for axial movement. A trocar point defined proximate the distal end of the cannula. A deflection surface positioned between the trocar point and the proximal end of the cannula, the deflection surface being configured and positioned to deflect, in response to axial movement of the stylets in a direction from the proximate end of the cannula to the distal end of the cannula, at least some of the stylets laterally with respect to the cannula axis in different directions along substantially straight paths, the paths defining an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.