A method and apparatus for supplying energy to a medical device

Details A method and apparatus for supplying energy to a medical device A method and apparatus for supplying energy to a medical device

A - Human Necessities

61

N

A61N 1/378 (2006.01) A61F 2/02 (2006.01) H02J 17/00 (2006.01)

Patent

CA 2739852

In a method and apparatus for supplying wireless energy to a medical device (100) implanted in a patient, wireless energy is transmitted from an external energy source (104) located outside a patient and is received by an internal energy receiver (102) located inside the patient, for directly or indirectly supplying received energy to the medical device. An energy balance is determined between the energy received by the internal energy receiver and the energy used for the medical device, and the transmission of wireless energy is then controlled based on the determined energy balance. The energy balance thus provides an accurate indication of the correct amount of energy needed, which is sufficient to operate the medical device properly, but without causing undue temperature rise.

La présente invention a pour objet un procédé et un appareil permettant de fournir de l'énergie sans fil à un dispositif médical (100) implanté dans le corps d'un patient, l'énergie étant transmise depuis une source d'énergie externe (104) située à l'extérieur du corps du patient et reçue par un récepteur d'énergie interne (102) situé dans le corps du patient, pour fournir directement ou indirectement l'énergie reçue au dispositif médical. Un équilibre énergétique est déterminé entre l'énergie reçue par le récepteur interne et l'énergie utilisée pour le dispositif médical, et la transmission d'énergie sans fil est ensuite contrôlée sur la base de l'équilibre énergétique déterminé. L'équilibre énergétique fournit ainsi une indication précise de la quantité satisfaisante d'énergie nécessaire et suffisante pour faire fonctionner le dispositif médical correctement, mais sans provoquer une élévation excessive de la température.

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