Patent · US Active

System and method for determining electrode-tissue contact based on amplitude modulation of sensed signal

US8489184B2 · kind B2 · utility

24Cited by

16References

26Claims

0Family size

Assignee

Hansen Medical, Inc. · US

Inventors

Brian P. Wilfley · Los Altos, US
Joseph Anthony Heanue · Oakland, US
Stuart L. Friedman · Palo Alto, US

Key dates

Filing date	Mar 16, 2012
Grant date	Jul 16, 2013
Priority date	—
Expiry date	Mar 16, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2090/065
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Methods and systems for monitoring contact between a medical probe and tissue are provided. A medical probe is introduced into a patient adjacent the tissue. An electrical parameter, e.g., electrical admittance, is measured between a first electrode located on the medical probe and a second electrode remote from the first electrode. The electrical parameter is amplitude modulated in response to a physiological cycle of the patient. Contact between the medical probe and the tissue is detected based on the amplitude modulation of the measured electrical parameter.

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