Radio frequency antenna in a header of an implantable medical device
First Claim
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1. An implantable cardiac rhythm management device, comprising:
- an implantable housing, the housing including a conductive surface;
an electronic circuit within said implantable housing, said electronic circuit configured to provide cardiac rhythm management for a patient in whom the device is implanted, said electronic circuit configured to communicate through radio frequency communications; and
an inverted F antenna coupled to the electronic circuit, said antenna configured for facilitating said radio frequency communications with said electronic circuit, wherein said antenna includes a planar conductor, and wherein the conductive surface of the implantable housing functions as a ground plane for said antenna;
a header housing said inverted F antenna, said header proximate said housing and configured to provide an electrical connection for a lead extending away from the header; and
wherein said header is configured to isolate said inverted F antenna from tissue of said patient when said implantable cardiac rhythm management device is implanted, and to dispose said planar conductor a specified distance from a surface of said header, said specified distance configured to load said antenna with a predictable dielectric constant.
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Abstract
An apparatus and method for enabling far-field radio frequency communications with an implantable medical device in which an antenna structure is disposed within a header assembly of the device. The antenna structure, in various embodiments, includes a monopole antenna, a dipole antenna, an inverted F antenna, a patch antenna and a slot antenna.
129 Citations
19 Claims
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1. An implantable cardiac rhythm management device, comprising:
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an implantable housing, the housing including a conductive surface; an electronic circuit within said implantable housing, said electronic circuit configured to provide cardiac rhythm management for a patient in whom the device is implanted, said electronic circuit configured to communicate through radio frequency communications; and an inverted F antenna coupled to the electronic circuit, said antenna configured for facilitating said radio frequency communications with said electronic circuit, wherein said antenna includes a planar conductor, and wherein the conductive surface of the implantable housing functions as a ground plane for said antenna; a header housing said inverted F antenna, said header proximate said housing and configured to provide an electrical connection for a lead extending away from the header; and wherein said header is configured to isolate said inverted F antenna from tissue of said patient when said implantable cardiac rhythm management device is implanted, and to dispose said planar conductor a specified distance from a surface of said header, said specified distance configured to load said antenna with a predictable dielectric constant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An implantable cardiac rhythm management device, comprising:
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an implantable housing, the housing including a conductive surface; an electronic circuit within said implantable housing, said electronic circuit configured to provide cardiac rhythm management for a patient in whom the device is implanted, said electronic circuit configured to communicate through radio frequency communications; and an inverted F antenna coupled to the electronic circuit, said antenna configured for facilitating said radio frequency communications with said electronic circuit, wherein said antenna includes a planar conductor, and wherein the conductive surface of the implantable housing functions as a ground plane for said antenna; a header housing said inverted F antenna, said header proximate said housing and configured to provide an electrical connection for a lead extending away from the header; wherein said planar conductor of said inverted F antenna is placed in generally parallel relation to a surface of said header; and wherein said header is configured to isolate said inverted F antenna from tissue of said patient when said implantable cardiac rhythm management device is implanted, and to dispose said planar conductor a specified distance from a surface of said header, said specified distance configured to load said antenna with a predictable dielectric constant. - View Dependent Claims (16, 17)
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18. An implantable cardiac rhythm management device, comprising:
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an implantable housing, the housing including a conductive surface; an electronic circuit within said implantable housing, said electronic circuit configured to provide cardiac rhythm management for a patient in whom the device is implanted, said electronic circuit configured to communicate through radio frequency communications; and an inverted F antenna coupled to the electronic circuit, said antenna configured for facilitating said radio frequency communications with said electronic circuit, wherein said antenna includes a planar conductor, wherein the conductive surface of the implantable housing functions as a ground plane for said antenna, and wherein said antenna is configured to be resonant at a plurality of resonant frequencies; a header housing said inverted F antenna, said header proximate said housing and configured to provide an electrical connection for a lead extending away from the header; and wherein said header is configured to isolate said inverted F antenna from tissue of said patient when said implantable cardiac rhythm management device is implanted, and to dispose said planar conductor a specified distance from a surface of said header, said specified distance configured to load said antenna with a predictable dielectric constant. - View Dependent Claims (19)
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Specification