Medical device with sensor cooperating with expandable member

Details Medical device with sensor cooperating with expandable member Medical device with sensor cooperating with expandable member

A - Human Necessities

61

B

A61B 18/14 (2006.01)

Patent

CA 2391051

Disclosed is a method for attaching a sensor (3816) to an inflatable balloon (3810). The method involves bonding the sensor to the balloon with an adhesive while the balloon is in an expanded state and then collapsing the balloon after the adhesive has at least partially cured, and afterwards inverting the balloon such that the inner surface of the wall is exposed. This way the sensor and the leads will be inside the balloon. The method reduces the possibility of a failure of the bond between the sensor and the balloon. The method is particularly useful in the construction of a tissue ablation catheter for forming a lesion along a substantially circumferential region of tissue wherein a sensor is used for monitoring the temperature of the tissue being ablated.

L'invention concerne un procédé servant à fixer un capteur (3816) à un ballonnet gonflable (3810). Ce procédé consiste à coller le capteur au ballonnet au moyen d'un adhésif, pendant que ce ballonnet est gonflé, à dégonfler le ballonnet après le durcissement au moins partiel de l'adhésif et ensuite à retourner le ballonnet, de façon à exposer la surface intérieure de sa paroi. De ce fait, le capteur et les conducteurs se trouveront à l'intérieur du ballonnet. Ce procédé permet de limiter l'éventualité d'une défaillance de l'adhérence entre le capteur et le ballonnet. Ce procédé est particulièrement utile pour l'élaboration d'un cathéter d'ablation tissulaire servant à créer une liaison le long d'une zone pratiquement périphérique d'un tissu, où on met en application un capteur afin de contrôler la température du tissu en cours d'ablation.

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