Cooled ablation catheter with reciprocating flow
US7951143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Jun 19, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an ablation catheter which controls the temperature and reduces the coagulation of biological fluids on an electrode of a catheter, prevents the impedance rise of tissue in contact with the electrode, and maximizes the potential energy transfer to the tissue, thereby allowing an increase in the lesion size produced by the ablation. The electrode includes passages positioned to allow blood and other biological fluids to flow into and out of an inner cavity of the electrode. This fluid flow produced the desired cooling effect and is accomplished, for example, by a reciprocating plunger or piston, or by a balloon that is alternately inflated and deflated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.