Charging system for an implantable medical device employing magnetic and electric fields
First Claim
1. An implantable medical device, comprising:
- a first antenna configured to receive an electric field for powering the implantable medical device;
a second antenna configured to receive a magnetic field for powering the implantable medical device; and
control circuitry configured to determine whether either or both of the electric field and the magnetic field have been received at the first or second antennas respectively, and for issuing at least one control signal enabling powering the implantable medical device either by the electric field or the magnetic field.
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Abstract
A base station for passively recharging a battery in an implant without patient involvement is disclosed. The base station can be hand held or may comprise equipment configured to be placed at a fixed location, such as under a bed, on or next to a wall, etc. The base station can generate electric and magnetic fields (E-field and B-field) that couple with an antenna and a receiving coil within the implant to generate a charging current for charging the implant'"'"'s battery. No handling or manipulation on part of the patient is necessary; the implant battery is passively charged whenever the patient is within range of either the magnetic or electric charging fields generated by base station. Charging using the B-field occurs when the IPG is at a relatively short distance from the base station, while charging using the E-field occurs at longer distances.
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Citations
19 Claims
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1. An implantable medical device, comprising:
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a first antenna configured to receive an electric field for powering the implantable medical device; a second antenna configured to receive a magnetic field for powering the implantable medical device; and control circuitry configured to determine whether either or both of the electric field and the magnetic field have been received at the first or second antennas respectively, and for issuing at least one control signal enabling powering the implantable medical device either by the electric field or the magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable medical device, comprising:
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a first antenna configured to receive a first field for powering the implantable medical device, wherein the first field is less than or equal to 100 kHz; a second antenna configured to receive a second field for powering the implantable medical device, wherein the second field has a frequency ranging from 1 MHz to 10 GHz; and control circuitry configured to determine whether either or both of the first field and the second field have been received at the first or second antennas respectively, and for issuing at least one control signal enabling powering the implantable medical device either by the first field or the second field. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification