Charger for implant
First Claim
1. A system for supplying energy to an implanted medical device for implantation in a patient'"'"'s body, comprising an internal charger arranged to be implanted in the patient'"'"'s body, the internal charger comprising a first coil,an external charger arranged to wirelessly transmit energy with an electromagnetic field to supply the internal charger with energy, the external charger comprising a second coil, anda wireless passive feedback system adapted to be powered by a wireless signal transmitted by the external charger and arranged to transmit feedback information from the internal charger to the external charger, wherein the feedback information is based on information obtained from at least one radio frequency identification (RFID) transmitter,wherein an RFID signature is set in response to a magnitude of the electromagnetic field received as actively measured by a measurement unit in the internal charger, measuring an electric parameter, wherein the measuring unit of the internal charger provides to the at least one RFID transmitter a determined value related to the magnitude of the received electromagnetic field and the at least one RFID transmitter is adapted to set and change its identification according to the determined value related to the magnitude of the received electromagnetic field and to be passively powered by the wireless energy, transmit the changed identification as feedback, and whereinthe external charger is arranged to regulate the wirelessly transmitted energy based on a relation between;
- the feedback information being related to an amount of energy received in the first coil, and an amount of wirelessly transmitted energy by the second coil.
3 Assignments
0 Petitions
Accused Products
Abstract
A system for supplying energy to an implantable medical device when implanted in a patient'"'"'s body can comprise an internal charger arranged to be implanted in the patient'"'"'s body, the internal charger comprising a first coil. The system can further comprise an external charger arranged to wirelessly transmit energy to supply power to the internal charger, using a second coil. The system also comprises a wireless feedback system arranged to transmit feedback information from the internal charger to the external charger. The feedback information is based on information from at least one Radio Frequency Identification (RFID) transmitter. Hereby a user of the system can optimize the position of the external power supply in relation to the internal power supply based on the received feedback information. This in turn will result in a better and more robust energy transfer to the implanted medical device.
47 Citations
25 Claims
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1. A system for supplying energy to an implanted medical device for implantation in a patient'"'"'s body, comprising an internal charger arranged to be implanted in the patient'"'"'s body, the internal charger comprising a first coil,
an external charger arranged to wirelessly transmit energy with an electromagnetic field to supply the internal charger with energy, the external charger comprising a second coil, and a wireless passive feedback system adapted to be powered by a wireless signal transmitted by the external charger and arranged to transmit feedback information from the internal charger to the external charger, wherein the feedback information is based on information obtained from at least one radio frequency identification (RFID) transmitter, wherein an RFID signature is set in response to a magnitude of the electromagnetic field received as actively measured by a measurement unit in the internal charger, measuring an electric parameter, wherein the measuring unit of the internal charger provides to the at least one RFID transmitter a determined value related to the magnitude of the received electromagnetic field and the at least one RFID transmitter is adapted to set and change its identification according to the determined value related to the magnitude of the received electromagnetic field and to be passively powered by the wireless energy, transmit the changed identification as feedback, and wherein the external charger is arranged to regulate the wirelessly transmitted energy based on a relation between; - the feedback information being related to an amount of energy received in the first coil, and an amount of wirelessly transmitted energy by the second coil.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 24, 25)
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17. A method of supplying, to an implantable medical device, when the medical device is implanted in a patient'"'"'s body, the medical device comprising an internal power supply comprising a first coil arranged to be implanted in the patient'"'"'s body and is configured to receive energy from an external power supply comprising a second coil, the method comprising the steps of:
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wirelessly transmitting energy by the external power supply via the second coil as an electromagnetic field to supply power to the internal power supply, and receiving, the external power supply via the first coil feedback information can be passively transmitted from the internal power supply, wherein the feedback information is based on information from at least one radio frequency identification (RFID) transmitter, wherein an RFID signature is set in response to a magnitude of the electromagnetic field received as actively measured by a measurement unit in the internal power supply, measuring an electric parameter, wherein the measuring unit of the internal power supply provides to the at least one RFID transmitter a determined value related to the magnitude of the received electromagnetic field and the at least one RFID transmitter is adapted to set and change its identification accordingly and to passively transmit the changed identification as feedback information, detecting a relation between the feedback information being related to an amount of energy received in the first coil, and an amount of wirelessly transmitted energy by the second coil, and regulating by the external power supply the wirelessly transmitted energy based on the relation. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification