Air core antenna for implantable device and method of production
First Claim
1. An implantable medical device, having means for being in telemetric communication with an external device, comprising:
- a substrate, said substrate having a thickness and an outer perimeter;
said substrate having a groove within said thickness around said perimeter;
an antenna coil wound within said groove; and
a circuit mounted on said substrate and electrically connected to said antenna coil.
1 Assignment
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Accused Products
Abstract
There is provided an air core antenna, and method of production of same, suitable for use in implantable device, the antenna being used for telemetric communication with an outside programmer unit. The air core antenna is fabricated upon a hybrid substrate, which substrate is subsequently processed to contain electronic circuits for use in the implantable device. A groove is milled into the perimeter side walls of the antenna, and the coil wire is wound within the groove, the two ends of the coil then being attached to connector pads on the substrate. There is thus provided an antenna which is integrally incorporated into the substrate so that space requirements of the antenna are minimized, providing an antenna which has a sufficient loop area to provide the receiving and transmission characteristics required of a modern programmable implanted device. The production process of the air core antenna is suitable for use on an automated assembly line, eliminating separate mounting of an antenna, and minimizing manual interactions.
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Citations
18 Claims
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1. An implantable medical device, having means for being in telemetric communication with an external device, comprising:
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a substrate, said substrate having a thickness and an outer perimeter; said substrate having a groove within said thickness around said perimeter; an antenna coil wound within said groove; and a circuit mounted on said substrate and electrically connected to said antenna coil. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable pacemaker, said pacemaker having generator means for generating pacing pulses, telemetric means for receiving telemetric programming signals from an external source, and control means for controlling pacemaker function in accordance with said received signals,
said telemetric means comprising a substrate having first and second substantially planar surfaces with a thickness therebetween and a predetermined perimeter around said surfaces, a groove within said thickness and around said perimeter, and an antenna coil wound within said groove.
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10. A method of making an air core antenna for use in an implantable device, comprising:
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providing a substrate having opposed substantially planar surfaces of a predetermined area and outer perimeter, said substrate having a predetermined thickness between said surfaces; cutting a shallow groove within said thickness and around said perimeter; positioning an antenna coil of a predetermined number of windings within said groove, so that said windings have a loop area just less than said predetermined area; and providing connecting means for enabling an electrical connection to said antenna coil. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A hybrid electrical unit, comprising:
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a substrate having a predetermined thickness and an outer of perimeter; a groove around said perimeter and within said thickness; a coil with plural windings, positioned within said groove; an electrical circuit fixed to said substrate; and
connecting means for connecting said coil to said circuit, whereby said coil acts as an antenna.
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Specification