Implantable wireless sensor for blood pressure measurement...

A - Human Necessities – 61 – B

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A61B 5/02 (2006.01) A61B 5/04 (2006.01) A61B 6/00 (2006.01)

Patent

CA 2494989

Intra-arterial blood pressure is monitored by inserting a pressure transducer sensor (250) using a catheter (258) into an artery and then using a small, hand-held read out device to measure pressure easily, safely, inexpensively and accurately. In one aspect a sensor (250) is introduced into the body by the steps of folding or rolling the sensor into a cylinder, loading it into a catheter, and deploying into the artery by allowing it to unroll or unfold, either by itself or facilitated by the incorporation of a super-elastic allow component.

Selon l'invention, la pression intra-artérielle est surveillée par insertion d'un capteur transducteur de pression au moyen d'un cathéter dans une artère, puis par utilisation d'un petit dispositif manuel d'affichage afin de mesurer la pression de manière facile, sûre, peu onéreuse et précise. Selon un aspect, un capteur est introduit dans le corps d'un patient en suivant les étapes qui consistent: à plier ou à rouler le capteur sous forme de cylindre; à le placer dans un cathéter; puis à provoquer le déploiement dudit capteur dans l'artère en le laissant se déplier ou se dérouler soit par ses propres moyens soit par incorporation d'un composant en alliage super-élastique.

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