Package integrated accelerometer

A - Human Necessities – 61 – N

Patent

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Details

A61N 1/365 (2006.01) G01P 1/02 (2006.01) G01P 15/08 (2006.01) G01P 15/09 (2006.01)

Patent

CA 2214023

A method and apparatus for creating a cantilever accelerometer beam by mechanically forming an accelerometer from a piezoelectric substrate. The inherent structure of the accelerometer provides a means for employing surface mount technology (SMT), or a protective package may be utilized to couple the accelerometer to the hybrid circuit within an implantable pacemaker. The sensor's structure is defined by three members. The first and second members are used to couple the sensor to the hybrid circuit and the third member defines the cantilever accelerometer beam, which generates an electrical output signal indicative of patient's activity.

L'invention porte sur une technique, ainsi que sur l'appareil correspondant, permettant de fabriquer une plaque en porte-à-faux d'accéléromètre en constituant un accéléromètre de manière mécanique à partir d'un substrat piézo-électrique. La structure inhérente de l'accéléromètre autorise l'emploi de la technique de montage en surface (SMT) ou bien alors, il est possible de faire appel à une enveloppe de protection pour coupler l'accéléromètre au circuit hybride dans un stimulateur cardiaque implantable. Trois éléments définissent la structure du palpeur et l'on utilise les premier et second éléments pour coupler le palpeur au circuit hybride tandis que le troisième élément permet de définir la plaque en porte-à-faux de l'accéléromètre produisant un signal électrique en sortie, témoin de l'activité d'un patient.

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