Ambulatory medical apparatus and method having telemetry...

A - Human Necessities – 61 – N

Patent

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A61N 1/372 (2006.01) A61M 5/142 (2006.01) A61M 5/172 (2006.01) G06F 9/445 (2006.01) G06F 19/00 (2006.01)

Patent

CA 2396749

An implanted medical device (e.g. infusion pump) and handheld communication device wherein the implantable device is capable of operating under control of different software programs, wherein a first program operates after resetting the implantable device and is not capable of providing significant medical functionality but is capable of selected telemetry operations including telemetry operations that allow replacement software to be downloaded, and wherein a second program may be caused to take control of the device and is capable of significant medical functionality and selected telemetry operations but is incapable of receiving replacement software. A software image may be received in multiple messages where each message is provided with its own validation code and wherein a validation code for the whole image is provided and wherein each provided validation code must be compared to a derived validation code prior to accepting the validity of the replacement software.

L'invention concerne un dispositif médical implantable (p. ex. une pompe à perfusion) et un dispositif de communication portatif. Le fonctionnement du dispositif implantable est capable de répondre à différents programmes logiciels. Un premier programme est actif après l'initialisation du dispositif implantable. Ce premier programme n'est pas capable de mettre en oeuvre des fonctions médicales importantes mais peut effectuer des opérations de télémétrie sélectionnées, notamment des opérations de télémétrie permettant le téléchargement d'un logiciel de remplacement. Le dispositif peut être commandé par une second programme qui assure des fonctions médicales étendues ainsi que des opérations de télémétrie sélectionnées, mais est incapable de recevoir un logiciel de remplacement. Une image logicielle peut être reçue sous forme de messages multiples, chaque message comportant son propre code de validation, un code de validation étant en outre fourni pour l'image entière. Chaque code de validation doit être comparé à un code de validation dérivé avant l'acceptation de la validité du logiciel de remplacement.

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