| US 7,591,816 B2 | ||
| Irrigated ablation catheter having a pressure sensor to detect tissue contact | ||
| Huisun Wang, Maple Grove, Minn. (US); and Hong Cao, Savage, Minn. (US) | ||
| Assigned to St. Jude Medical, Atrial Fibrillation Division, Inc., St. Paul, Minn. (US) | ||
| Filed on Dec. 28, 2006, as Appl. No. 11/646,270. | ||
| Prior Publication US 2008/0161794 A1, Jul. 03, 2008 | ||
| Int. Cl. A61B 18/14 (2006.01) | ||
| U.S. Cl. 606—41 | 32 Claims |
| 1. An ablation catheter comprising:
(a) an elongated tubing having a distal end, a proximal end, and a lumen;
(b) an electrode having an inner cavity, a plurality of passages from the inner cavity to an outer surface of the electrode,
a distal end and a proximal end;
(c) a shaft having a distal end and a proximal end, said distal end attached to the proximal end of electrode, the shaft being
external to the tubing; and
(d) a pressure sensor mounted inside the inner cavity of the electrode for sensing pressure change due to a change in fluid
flow exiting through at least one of the passages.
|