CATHETER UTILIZING OPTICAL SPECTROSCOPY FOR MEASURING TISSUE CONTACT AREA

PROBLEM TO BE SOLVED: To provide a catheter with an irrigated distal tip ablation electrode adapted to assess and measure the extent of contact between the ablation electrode and surrounding tissue.SOLUTION: A catheter comprises an elongated catheter body 12, a control handle 16, and a hollow tip el...

Full description

Saved in:
Bibliographic Details
Main Authors GEORGE KAMIN, JOHN H ASHTON, JOSEPH KEYES, JEFFREY L CLARK
Format Patent
LanguageEnglish
Japanese
Published 16.07.2015
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:PROBLEM TO BE SOLVED: To provide a catheter with an irrigated distal tip ablation electrode adapted to assess and measure the extent of contact between the ablation electrode and surrounding tissue.SOLUTION: A catheter comprises an elongated catheter body 12, a control handle 16, and a hollow tip electrode. Light interacting with tissue is reflected back into a cavity for collection whereas light interacting with fluid, such as blood, is absorbed. By analyzing the light collected in the cavity, the amount of contact between the tip electrode and the tissue is indicated. Alternatively, fluorescence may similarly be employed (light is emitted at one wavelength and detected at one or more different wavelengths) since tissue and blood have different fluorescence properties at various wavelengths. An integrated ablation and spectroscopy system further comprises an RF generator, a light source and a light analyzer adapted to analyze the light collected in the cavity. 【課題】アブレーション電極と周囲組織との間の接触度合いを評価し測定するように適合された灌注式遠位先端アブレーション電極を備えるカテーテルを提供する。【解決手段】細長いカテーテル本体12と、制御ハンドル16と、中空先端電極と、を具備する。組織と相互作用する光は収集のために反射されて空洞内に戻るのに対し、血液等の流体と相互作用する光は吸収される。空洞内に収集された光を分析することによって、先端電極と組織との間の接触量が示される。組織及び血液は様々な波長において異なる蛍光特性を有するため、代替として、螢光(光が1つの波長にて放出され、1つ又は複数の異なる波長において検出される)を同様に利用することができる。統合型アブレーション及び分光法システムは、RF発生器と、光源と、空洞内に収集された光を分析するように適合された光分析装置と、を更に備える。【選択図】図1
Bibliography:Application Number: JP20140264019