Hybrid rectification for recharging an implantable medical device
First Claim
1. A recharge system, comprising:
- a rechargeable power source;
a half-wave voltage-doubling (HWVD) rectifier coupled to receive energy from a charging power source to recharge the rechargeable power source;
a full-wave rectifier coupled to receive energy from the charging power source to recharge the rechargeable power source; and
control logic configured to increase a rate at which the rechargeable power source is recharged by controlling which one of the HWVD rectifier and the full-wave rectifier is recharging the rechargeable power source at any given time.
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Abstract
A charging system is disclosed. In one embodiment, the system includes a charging unit having a primary coil, and an implantable medical device comprising a secondary coil to receive charge from the primary coil. The implantable medical device further includes a half-wave voltage-doubling rectifier coupled to the secondary coil, a full-wave rectifier coupled to the secondary coil, and a rechargeable power source. Control logic is provided to periodically configure the rechargeable power source to receive charge from a selected one of the voltage-doubling circuit and the full-wave rectifier in a manner that increases rate at which charge is transferred from the secondary coil to the rechargeable power source. The control logic may configure the rechargeable power source to receive charge based on one or more monitored conditions which may include, for example, an indication of a current, a voltage, a coupling coefficient, back-scatter, and temperature.
20 Citations
30 Claims
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1. A recharge system, comprising:
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a rechargeable power source; a half-wave voltage-doubling (HWVD) rectifier coupled to receive energy from a charging power source to recharge the rechargeable power source; a full-wave rectifier coupled to receive energy from the charging power source to recharge the rechargeable power source; and control logic configured to increase a rate at which the rechargeable power source is recharged by controlling which one of the HWVD rectifier and the full-wave rectifier is recharging the rechargeable power source at any given time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20)
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12. A system, comprising:
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a recharging device having a primary coil; and an implantable medical device comprising; a secondary coil configured to receive energy from the primary coil; a half-wave voltage-doubling (HWVD) rectifier coupled to the secondary coil; a full-wave rectifier coupled to the secondary coil; a rechargeable power source; and control logic configured to periodically select to which one of the HWVD rectifier and the full-wave rectifier the rechargeable power source is to be coupled to be recharged, thereby increasing efficiency of recharging the rechargeable power source. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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21. A method, comprising:
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receiving energy, via a charging power source, to recharge a rechargeable power source of an implantable device; and controlling, via control logic, which one of a HWVD rectifier and a full-wave rectifier is coupled to provide charge to the rechargeable power source at a given time to thereby increase a rate at which the received energy recharges the rechargeable power source. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification