Antenna arrangements for implantable therapy device
First Claim
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1. An implantable medical device comprising:
- an inner housing containing a processor and a communications circuit;
an antenna arrangement including a first antenna and a second antenna capacitively coupled to the first antenna, the first antenna being wrapped circumferentially around an exterior of the inner housing in a loop, the first antenna having a first port at which the first antenna enters the inner housing, and the first antenna including a loop antenna, the second antenna being arranged external of the inner housing, the second antenna having a second port at which the second antenna enters the inner housing, the second antenna being electrically coupled to the communications circuit via the second port;
wherein the implantable medical device is configured for implantation within a body of a patient.
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Abstract
Embodiments of an implantable medical device includes a loop antenna wound about an inner housing. The loop antenna may form a partial winding, a complete winding, or multiple windings about the inner housing. One or more additional antennae may be capacitively coupled to the loop antenna external to the inner housing to increase efficiency and decrease Return Loss Response of the implantable device. The additional antenna may be balanced or unbalanced antennae.
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Citations
19 Claims
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1. An implantable medical device comprising:
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an inner housing containing a processor and a communications circuit; an antenna arrangement including a first antenna and a second antenna capacitively coupled to the first antenna, the first antenna being wrapped circumferentially around an exterior of the inner housing in a loop, the first antenna having a first port at which the first antenna enters the inner housing, and the first antenna including a loop antenna, the second antenna being arranged external of the inner housing, the second antenna having a second port at which the second antenna enters the inner housing, the second antenna being electrically coupled to the communications circuit via the second port; wherein the implantable medical device is configured for implantation within a body of a patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for communicating with an implantable device, the method comprising:
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providing an implantable device including a loop antenna wound in a loop around an exterior of an inner housing containing a processor, a communications circuit, a rechargeable power source, and a switching circuit, the implantable device also including a second antenna capacitively coupled to the loop antenna; implanting the implantable device within the patient; transmitting a power signal to the implantable device to provide power to the rechargeable power source, the power signal having a first frequency; and transmitting a communications signal to the implantable device to provide data or commands to the communications circuit, the communications signal having a second frequency that is higher than the first frequency. - View Dependent Claims (19)
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Specification