Temperature measuring balloon

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/00 (2006.01)

Patent

CA 2429371

A balloon catheter (10) for locating vulnerable plaque lesions within a body lumen. The balloon includes a temperature responsive material (30) thereon. The temperature responsive material is designed to exhibit a predetermined color when the material is in contact with an object having an elevated temperature, such as a vulnerable plaque lesion. The catheter (10) has a lumen which allows a light source (32) to transmit light into the inside of the balloon. The light is directed to illuminate at least a portion of the temperature responsive material. A light detector (40) is positioned to detect light received from the temperature responsive meterial and detect a temperature therefrom. The detected temperature can be used to indicate the presence of a lesion.

Cette invention a trait à un cathéter à ballonnet servant à localiser des lésions en plaques vulnérables dans une lumière corporelle. Ce ballonnet renferme un matériau réagissant à la température, lequel matériau est conçu pour prendre une certaine couleur lorsqu'il entre en contact avec un élément dont la température est élevée, notamment une lésion en plaque vulnérable. Ce cathéter comporte un canal permettant à une source lumineuse d'émettre une lumière vers le ballonnet. Cette lumière est orientée de manière à éclairer au moins une partie du matériau réagissant à la lumière. Le cathéter est pourvu d'un capteur de lumière détectant la lumière renvoyée par ledit matériau et, partant, évaluant la température. Il est possible d'utiliser cette évaluation thermique pour déceler la présence d'une lésion.

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