Patent · US Active

Irrigated ablation catheter having a valve to prevent backflow

US7824406B2 · kind B2 · utility

40Cited by

26References

18Claims

0Family size

Assignee

St. Jude Medical, Atrial Fibrillation Division, Inc. · US

Inventors

Huisun Wang · Maple Grove, US
Jeremy D. Dando · Plymouth, US

Key dates

Filing date	Dec 28, 2006
Grant date	Nov 2, 2010
Priority date	—
Expiry date	May 2, 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 saline flow out of an inner cavity of the electrode. This fluid flow produces the desired cooling effect and is accomplished, for example, by saline irrigation flow with a valve element to block flow of blood into the inner cavity of the electrode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.