SPINAL CORD STIMULATOR SYSTEM
First Claim
1. A wireless charger for automatically tuning an optimum frequency to inductively charge a rechargeable battery of an implantable pulse generator (IPG) that generates spinal cord stimulation signals for a human body, the wireless charger comprising:
- a charging coil adapted to be wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery;
a reflected impedance sensor coupled to the charging coil to detect a reflected impedance of the charging coil;
an optimization circuit coupled to the reflected impedance sensor and adapted to select an optimum frequency of a charging signal supplied to the charging coil based on the detected reflected impedances of a plurality of charging frequencies in a selected frequency range.
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Accused Products
Abstract
A wireless charger for automatically tuning an optimum frequency to inductively charge a rechargeable battery of an implantable pulse generator (IPG) that generates spinal cord stimulation signals for a human body is provided. The charging coil in the charger is wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery. An optimization circuit detects a reflected impedance of the charging coil through a reflected impedance sensor, and select an optimum frequency of a charging signal supplied to the charging coil based on the detected reflected impedances of a plurality of charging frequencies in a selected frequency range. Advantageously, the optimum charging frequency provides a more efficient way to charge the IPG'"'"'s rechargeable battery.
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Citations
18 Claims
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1. A wireless charger for automatically tuning an optimum frequency to inductively charge a rechargeable battery of an implantable pulse generator (IPG) that generates spinal cord stimulation signals for a human body, the wireless charger comprising:
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a charging coil adapted to be wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery; a reflected impedance sensor coupled to the charging coil to detect a reflected impedance of the charging coil; an optimization circuit coupled to the reflected impedance sensor and adapted to select an optimum frequency of a charging signal supplied to the charging coil based on the detected reflected impedances of a plurality of charging frequencies in a selected frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for a wireless charger to automatically tune an optimum frequency to inductively charge a rechargeable battery of an implantable pulse generator (IPG) that generates spinal cord stimulation signals for a human body, the method comprising:
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applying a plurality of charging frequencies in a selected frequency range to a charging coil; detecting a reflected impedance of the charging coil for each applied charging frequency; selecting an optimum frequency of the charging coil based on the detected reflected impedances of the plurality of charging frequencies. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification