Intraocular pressure sensor

A - Human Necessities – 61 – B

Patent

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Details

A61B 3/16 (2006.01)

Patent

CA 2758801

An implantable intraocular pressure sensor system has a sealed geometric shape with an internal pressure at a first value. A strain gauge wire is embedded in a surface of the sealed geometric shape. When the surface is deflected by intraocular pressure, a measured resistance of the strain gauge wire indicates the intraocular pressure. The system also has a processor coupled to a power source and memory. The processor is configured to read the measured resistance and write values corresponding to intraocular pressure to the memory.

La présente invention concerne un système capteur de pression intraoculaire présentant une forme géométrique fermée, tarée à une première valeur de pression interne. Un fil de jauge extensométrique est enchâssé dans une surface de la forme géométrique fermée. Quand la pression intraoculaire crée une déflexion de la surface, une résistance mesurée du fil de la jauge extensométrique indique la pression intraoculaire. Le système comporte également un processeur couplé à une source électrique et à une mémoire. Le processeur est configuré pour lire la résistance mesurée et écrire dans la mémoire les valeurs correspondant à la pression intraoculaire.

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