Method and apparatus for supplying energy to a medical device
First Claim
1. A method of controlling the transmission of wireless energy supplied to an electrically operable medical device implanted in a mammal patient, said wireless energy being transmitted by means of a primary coil in an external energy source located outside the patient and received inductively by means of a secondary coil in an internal energy receiver located inside the patient, the internal energy receiver being connected to the medical device for directly or indirectly supplying received energy thereto, the method comprising the steps of:
- transferring feedback control information from the secondary coil to the primary coil by switching the secondary coil on and off to induce a detectable impedance load variation in the primary coil encoding the feedback control information, the feedback control information relating to the energy for operating the medical device,using the transferred feedback control information to control the transmission of wireless energy from the external energy source, andconsuming, storing or consuming and storing the energy after it has been stabilized in at least one energy stabilizing unit of the medical device, the wireless energy being first transmitted with a predetermined energy rate, and then transmitted based on an energy balance, which is determined by detecting the direction and rate of change in the current amount of accumulated energy in the at least one energy stabilizing unit, where the rate of change is direction and speed of change of the energy balance measured as energy in the stabilizing unit, repeating detecting the direction and speed of change in the current amount of accumulated energy in the at least one energy stabilizing unit intermittently at certain intervals during ongoing energy transfer, which is executed on a continuous basis during the energy transfer.
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Accused Products
Abstract
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.
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Citations
20 Claims
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1. A method of controlling the transmission of wireless energy supplied to an electrically operable medical device implanted in a mammal patient, said wireless energy being transmitted by means of a primary coil in an external energy source located outside the patient and received inductively by means of a secondary coil in an internal energy receiver located inside the patient, the internal energy receiver being connected to the medical device for directly or indirectly supplying received energy thereto, the method comprising the steps of:
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transferring feedback control information from the secondary coil to the primary coil by switching the secondary coil on and off to induce a detectable impedance load variation in the primary coil encoding the feedback control information, the feedback control information relating to the energy for operating the medical device, using the transferred feedback control information to control the transmission of wireless energy from the external energy source, and consuming, storing or consuming and storing the energy after it has been stabilized in at least one energy stabilizing unit of the medical device, the wireless energy being first transmitted with a predetermined energy rate, and then transmitted based on an energy balance, which is determined by detecting the direction and rate of change in the current amount of accumulated energy in the at least one energy stabilizing unit, where the rate of change is direction and speed of change of the energy balance measured as energy in the stabilizing unit, repeating detecting the direction and speed of change in the current amount of accumulated energy in the at least one energy stabilizing unit intermittently at certain intervals during ongoing energy transfer, which is executed on a continuous basis during the energy transfer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of controlling the transmission of wireless energy supplied to an electrically operable medical device implanted in a mammal patient, said wireless energy being transmitted by means of a primary coil in an external energy source located outside the patient and received inductively by means of a secondary coil in an internal energy receiver located inside the patient, the internal energy receiver being connected to the medical device for directly or indirectly supplying received energy thereto, the method comprising the steps of:
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transferring feedback control information relating to the energy for operating the medical device, generating the feedback control information requiring artificial intelligence storing the transferred feedback control information in a internal control unit switching the secondary coil on and off controlling the switching by the internal control unit, using the transferred feedback control information to control the transmission of wireless energy from the external energy source, and consuming, storing or consuming and storing the energy after it has been stabilized in at least one energy stabilizing unit of the medical device, the wireless energy being first transmitted with a predetermined energy rate, and then transmitted based on an energy balance, which is determined by detecting the direction and rate of change in the current amount of accumulated energy in the at least one energy stabilizing unit, where the rate of change is direction and speed of change of the energy balance measured as energy in the stabilizing unit, repeating intermittently at certain intervals during ongoing energy transfer executing on a continuous basis during the energy transfer.
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Specification