RECHARGE SYSTEM AND METHOD FOR DEEP OR ANGLED DEVICES
First Claim
1. For use in recharging an Implantable Medical Device (IMD) implanted in a patient, the IMD having a secondary recharge coil and a rechargeable power source, a recharging system comprising:
- a first coil lying in a first plane and a second coil lying in a second plane substantially parallel to the first plane, wherein the IMD lies between the first and second planes; and
a recharging device coupled to each of the first and the second coils to generate a current in the first and the second coils that electromagnetically couples the first and the second coils to the secondary recharge coil to recharge the rechargeable power source.
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Accused Products
Abstract
Techniques are disclosed for recharging an Implantable Medical Device (IMD). In one embodiment, a first external coil is positioned on one side of a patient'"'"'s body, such as on a front side of the torso in proximity to the IMD. A second external coil is positioned on an opposite side of the patient'"'"'s body, such as on the back of the torso. A recharging device generates a current in each of the coils, inductively coupling the first and the second coils to the secondary recharge coil of the IMD. According to another aspect, each of the two external coils may wrap around a portion of the patient'"'"'s body, such as the torso or head, and are positioned such that the IMD lies between the coils. According to this aspect, current generated in the coils inductively couples to a second recharge coil that is angled within the patient'"'"'s body.
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Citations
39 Claims
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1. For use in recharging an Implantable Medical Device (IMD) implanted in a patient, the IMD having a secondary recharge coil and a rechargeable power source, a recharging system comprising:
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a first coil lying in a first plane and a second coil lying in a second plane substantially parallel to the first plane, wherein the IMD lies between the first and second planes; and a recharging device coupled to each of the first and the second coils to generate a current in the first and the second coils that electromagnetically couples the first and the second coils to the secondary recharge coil to recharge the rechargeable power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. For use in recharging an Implantable Medical Device (IMD) implanted in a patient, the IMD having a secondary recharge coil and a rechargeable power source, a recharging system comprising:
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first and second coils external to the patient'"'"'s body and positioned so that the IMD lies between the first and second coils with a major axis of at least one of the first and second coils intersecting the IMD; and a recharging device coupled to generate a current that electromagnetically couples the first and the second coils to the secondary recharge coil to recharge the rechargeable power source. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of recharging a rechargeable power source of an implantable medical device (IMD) implanted within a patient, comprising:
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providing a first coil and a second coil that lie in a first plane and a second plane, respectively, the first and second coils being external to the patient'"'"'s body; positioning the first and the second coils such that the IMD lies between the first and the second planes and the first and the second planes are substantially parallel to each other; and generating a current in the first coil and the second coil to electromagnetically couple the first and the second coils to a secondary coil of the IMD to recharge the rechargeable power source. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification