Magnetic induction communication system for an implantable medical device
First Claim
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1. An implantable communication system for an active implantable medical device comprising:
- an isolation transformer;
a coil coupled to said isolation transformer;
a first communication component coupled to said isolation transformer so as to receive power and data from a first external component over a closely coupled magnetic induction (MI) link operating at a first frequency and formed between the coil and the first external component; and
a second communication component coupled to said isolation transformer so as to receive data from a second external component over a weakly coupled MI link formed between the coil and the second external component, wherein the weakly coupled MI link operates at a second frequency that is different from the first frequency of the closely coupled MI link.
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Abstract
A communication system for an active implantable medical device. The communication system includes an isolation transformer a coil coupled to the isolation transformer, and first and second communication components each coupled to the isolation transformer such that the first and second communication components are electrically isolated from the coil, and such that the isolation transformer enables the first and second communication components to communicate, via magnetic induction (MI) using the coil, with at least one external component.
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Citations
21 Claims
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1. An implantable communication system for an active implantable medical device comprising:
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an isolation transformer; a coil coupled to said isolation transformer; a first communication component coupled to said isolation transformer so as to receive power and data from a first external component over a closely coupled magnetic induction (MI) link operating at a first frequency and formed between the coil and the first external component; and a second communication component coupled to said isolation transformer so as to receive data from a second external component over a weakly coupled MI link formed between the coil and the second external component, wherein the weakly coupled MI link operates at a second frequency that is different from the first frequency of the closely coupled MI link. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. An implantable component of an implantable medical device comprising:
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an isolation transformer; a coil coupled to said isolation transformer; first and second communication components each coupled to said isolation transformer such that said first and second communication components are electrically isolated from said coil, and such that said isolation transformer enables said first and second communication components to communicate, via said coil, with a first external component, wherein said isolation transformer, said coil, and said first and second communication components are each part of a circuit equivalent to an LC tank circuit having a single resonant frequency, wherein said first communication component is configured to receive power and data from the first external component over a closely coupled MI link operating at a first frequency and formed between the coil and the first external component and wherein said second communication component is configured to receive data from a second external component over an MI radio link operating at a second frequency that is different than the closely coupled MI link. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system comprising:
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first and second external components; and an implantable component comprising; an isolation transformer; a coil coupled to said isolation transformer; and a first communication component coupled to said isolation transformer so as to receive power and data from the first external component over a closely coupled magnetic induction (MI) link operating at a first frequency and formed between the coil and the first external component; and a second communication component coupled to said isolation transformer so as to receive data from the second external component over a weakly coupled MI link formed between the coil and the second external component, wherein the weakly coupled MI link operates at a second frequency that is different from the first frequency of the closely coupled MI link. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification