Improved architectures for an implantable medical device system

Details Improved architectures for an implantable medical device system Improved architectures for an implantable medical device system

A - Human Necessities

61

N

A61N 1/372 (2006.01) G06F 13/12 (2006.01)

Patent

CA 2687183

An improved architecture for an implantable medical device such as an implantable pulse generator (IPG) is disclosed. In one embodiment, the various functional blocks for the IPG are incorporated into a signal integrated circuit (IC). Each of the functional blocks communicate with each other, and with other off-chip devices if necessary, via a centralized bus governed by a communication protocol. To communicate with the bus and to adhere to the protocol, each circuit block includes bus interface circuitry adherent with that protocol. Because each block complies with the protocol, any given block can easily be modified or upgraded without affecting the design of the other blocks, facilitating debugging and upgrading of the IPG circuitry. Moreover, because the centralized bus can be taken off the integrated circuit, extra circuitry can easily be added off chip to modify or add functionality to the IPG without the need for a major redesign of the main IPG IC.

L'invention porte sur l'architecture améliorée d'un dispositif médical implantable tel qu'un générateur d'impulsion implantable (IPG). Dans une exécution, les différents blocs fonctionnels de l'IPG sont incorporés à un circuit intégré de signaux (IC). Les différents blocs fonctionnels communiquent entre eux, et si nécessaire avec d'autres dispositifs sur puce, via un bus central régi par un protocole de communication. Pour communiquer avec le bus et adhérer au protocole, chaque bloc de circuit comporte un circuit interface avec le bus adhérant audit protocole. Puisque chaque bloc observe le protocole, tout bloc peut facilement être modifié ou mis à jour sans affecter la conception des autres blocs, ce qui facilite le déverminage et la mise à niveau du circuit IPG. De plus, puisque le bus central peut être retiré du circuit intégré, un circuit peut facilement être ajouté à la puce pour modifier ou ajouter une fonctionnalité à l'IPG, et cela sans avoir à effectuer de reconfiguration importante du circuit intégré principal de l'IPG.

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