Resonance tuning module for implantable devices and leads
First Claim
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1. An electrode, comprising:
- a conductive housing having an axis;
an inner conductive layer positioned coaxially to the axis of the conductive housing;
a dielectric material positioned coaxially to the axis of the conductive housing between said conductive housing and said inner conductive layer to form a capacitor;
an inductor coil positioned coaxially to the axis of the conductive housing and having a first end and a second end, wherein the first end of the inductor coil is connected to said inner conductive layer and the second end of the inductor coil is connected to the conductive housing to form a resonant circuit; and
a conductive connection element adapted to electrically couple the first end of the inductor coil to a wire of a lead.
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Abstract
An implantable medical assist device includes a medical device. The medical device has a housing and electronics contained therein. A lead provides an electrical path to or from the electronics within the medical device. A resonance tuning module is located in the housing and is connected to the lead. The resonance tuning module includes a control circuit for determining a resonant frequency of the implantable medical assist device and an adjustable impedance circuit to change the combined resonant frequency of the medical device and lead.
19 Citations
19 Claims
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1. An electrode, comprising:
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a conductive housing having an axis; an inner conductive layer positioned coaxially to the axis of the conductive housing; a dielectric material positioned coaxially to the axis of the conductive housing between said conductive housing and said inner conductive layer to form a capacitor; an inductor coil positioned coaxially to the axis of the conductive housing and having a first end and a second end, wherein the first end of the inductor coil is connected to said inner conductive layer and the second end of the inductor coil is connected to the conductive housing to form a resonant circuit; and a conductive connection element adapted to electrically couple the first end of the inductor coil to a wire of a lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electrode, comprising:
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a substantially cylindrical conductive housing having an axis; a substantially cylindrical inner conductive layer positioned coaxially to the axis of the conductive housing; a dielectric material positioned coaxially to the axis of the conductive housing between said conductive housing and said inner conductive layer to form a capacitor; and an inductor coil positioned coaxially to the axis of the conductive housing and connected to said inner conductive layer and to said conductive housing to form a parallel resonant circuit; and a conductive connection element adapted to electrically couple the parallel resonant circuit in series with a wire of a lead. - View Dependent Claims (16, 17, 18, 19)
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Specification