Implantable medical device with integrated acoustic transducer
First Claim
Patent Images
1. An implantable medical device, comprising:
- a pulse generator including a hermetically sealed housing having a housing wall with an interior surface; and
an ultrasonic acoustic transducer comprising one or more piezoelectric discs disposed within the housing and coupled to a metallic membrane, the membrane interposed between the interior surface of the housing wall and the piezoelectric discs, the membrane coupling the piezoelectric discs to the interior surface of the housing wall and including an annular ring that surrounds the piezoelectric discs, wherein the housing wall is configured to act as a diaphragm in response to induced movement by the one or more piezoelectric discs.
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Abstract
An implantable medical device comprises a hermetically sealed housing having a housing wall with an interior surface, and an ultrasonic acoustic transducer, the transducer comprising one or more piezoelectric discs fixed to the interior surface of the housing wall, such that the housing wall acts as a diaphragm in response to induced movement by the one or more piezoelectric material discs.
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Citations
22 Claims
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1. An implantable medical device, comprising:
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a pulse generator including a hermetically sealed housing having a housing wall with an interior surface; and an ultrasonic acoustic transducer comprising one or more piezoelectric discs disposed within the housing and coupled to a metallic membrane, the membrane interposed between the interior surface of the housing wall and the piezoelectric discs, the membrane coupling the piezoelectric discs to the interior surface of the housing wall and including an annular ring that surrounds the piezoelectric discs, wherein the housing wall is configured to act as a diaphragm in response to induced movement by the one or more piezoelectric discs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An implantable medical device, comprising:
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a pulse generator including a hermetically sealed housing having a housing wall with an interior surface; an ultrasonic acoustic transducer comprising one or more piezoelectric discs disposed within the housing and coupled to a metallic membrane, the membrane interposed between the interior surface of the housing wall and the piezoelectric discs, the membrane coupling the piezoelectric discs to the interior surface of the housing wall; wherein the transducer is configured to operate at a resonance frequency that is within the range of 20 KHz to 3 MHz; and wherein the housing wall acts as a diaphragm in response to induced movement by the one or more piezoelectric discs. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An implantable medical device, comprising:
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a pulse generator including a hermetically sealed housing having a housing wall with an interior surface; an ultrasonic acoustic transducer comprising a piezoelectric disc disposed within the housing and attached about an outer circumference of the disc to a support structure, the support structure including a membrane interposed between the interior surface of the housing wall and the piezoelectric disc and being configured to elevate the piezoelectric disc from the interior surface of the housing wall to allow the disc to flex into a space defined between the disc and the housing wall; and wherein the membrane is mounted on a pedestal attached to the interior surface of the housing wall.
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Specification