Acoustic communication transducer in implantable medical device header
First Claim
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1. An implantable medical device for implantation into body tissue comprising:
- a housing and a header coupled to the housing;
a cavity located in the header;
a casing disposed within the cavity, the casing having a wall defining a coupling surface;
an ultrasonic transducer disposed inside the casing, the transducer adapted to transmit acoustic waves at a communication frequency; and
control circuitry disposed in the housing, the control circuitry adapted to communicate with a remote device by driving the transducer at the communication frequency and processing electrical signals received from the transducer;
wherein the coupling surface is configured to be interposed between the ultrasonic transducer and the body tissue, the coupling surface having a resonance frequency greater than about 20 kHz and the coupling surface configured to be acoustically coupled with the body tissue.
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Abstract
An implantable medical device is adapted for implantation into body tissue. The implantable medical device comprises a housing and a header coupled to the housing. A cavity is located in the header. An ultrasonic transducer adapted to transmit acoustic waves at a communication frequency is located in the cavity, and a coupling surface is interposed between the ultrasonic transducer and the body tissue and is acoustically coupled with the body tissue.
181 Citations
19 Claims
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1. An implantable medical device for implantation into body tissue comprising:
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a housing and a header coupled to the housing; a cavity located in the header; a casing disposed within the cavity, the casing having a wall defining a coupling surface; an ultrasonic transducer disposed inside the casing, the transducer adapted to transmit acoustic waves at a communication frequency; and control circuitry disposed in the housing, the control circuitry adapted to communicate with a remote device by driving the transducer at the communication frequency and processing electrical signals received from the transducer; wherein the coupling surface is configured to be interposed between the ultrasonic transducer and the body tissue, the coupling surface having a resonance frequency greater than about 20 kHz and the coupling surface configured to be acoustically coupled with the body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable medical device for implantation into body tissue comprising:
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a housing and a header coupled to the housing; a cavity located in the header; a casing disposed within the cavity, the casing having a surface defining a coupling surface; a means for communicating ultrasonic signals, the means for communicating located in the casing; and control circuitry disposed in the housing, the control circuitry adapted to communicate with a remote device by driving the means for communication at the communication frequency and processing electrical signals received from the means for communication; wherein the coupling surface is configured to be interposed between the means for communicating ultrasonic signals and the body tissue, the coupling surface a resonance frequency greater than about 20 kHz and the coupling surface is configured to be acoustically coupled with the body tissue. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification