Implantable intracranial and cerebrospinal fluid pressure...

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/03 (2006.01) A61B 5/00 (2006.01)

Patent

CA 2384877

The present invention relates to a completely implantable intracranial pressure monitor (10), which can couple to existing fluid shunting systems (35) as well as other internal monitoring probes. The implant sensor produces an analog data signal which is then converted by electronic means to a digital pulse by generation of a spreading code signal and then transmitted to a location outside the patient by means of a radio-frequency transmitter (15) to an external receiver (44). The implanted device can receive power from an internal source (16) as well as an inductive external source (50). Remote control of the implant is also provided by a control receiver (60) which passes commands from an external source to the implant system logic. Alarm parameters can be programmed into the device which are capable of producing an audible or visual alarm signal. The utility of the monitor can be greatly expanded by using multiple pressure sensors simultaneously or by combining sensors of various physiological types.

La présente invention concerne un dispositif totalement implantable de surveillance de la pression intracrânienne (10) pouvant se coupler à des systèmes existants de dérivation des fluides (35) ainsi que d'autres sondes de surveillance interne. La sonde de l'implant produit un signal de données analogiques qui est ensuite converti par des dispositifs électroniques en impulsions numériques par génération d'un signal d'étalement de code, et qui est ensuite transmis à un site extérieur au patient au moyen d'un émetteur HF (15) à destination d'un récepteur externe (44). Le dispositif implanté peut recevoir l'électricité d'une source interne (16) ainsi que d'une source inductive externe (50). La télécommande de l'implant est également réalisée au moyen d'un récepteur de commande (60) qui transmet à la logique du système de l'implant les commandes d'une source externe. Des paramètres d'alarme peuvent programmables dans le dispositif sont capables de produire un signal d'alarme sonore ou visuel. L'utilité du dispositif de surveillance peut être fortement accrue par l'utilisation simultanée de plusieurs sondes de manométriques, ou en combinant des sondes de divers types physiologiques.

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