Coaxial catheter instruments for ablation with radiant energy
US8025661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2003 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Aug 10, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N7/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiac ablation instrument includes a catheter body and a tear-shaped balloon that is connected to the catheter body. The instrument further includes a radiant energy emitter that is axially movable within a central lumen of the catheter body. A radiant energy transparent body surrounds the energy emitter and includes a plurality of illumination fibers disposed circumferentially about the energy emitter. A detector communicates with a contact sensing element and is configured to determine an amount of at least one color component of the reflected light The amount of the at least one color component being indicative of contact between the balloon and a target tissue site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.