Piezoelectric transducer
First Claim
1. An implantable medical device, comprising:
- an acoustic transducer configured to receive an acoustic interrogation signal; and
a means for modulating a reflected acoustic wave from the acoustic transducer, the reflected acoustic wave including data to be transmitted from the implantable medical device.
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Accused Products
Abstract
Devices and systems for transmitting information within a body are disclosed. An example system includes a signal generator configured for transmitting an acoustic interrogation signal, a sensor for sensing at least one parameter within the body and generating an electrical sensor signal, an acoustic transducer coupled to the sensor and configured to convert a received acoustic interrogation signal into an electrical signal, and a switching element adapted to modulate a reflected acoustic wave from the acoustic transducer based on the electrical sensor signal. The switching element is configured to controllably change the mechanical impedance of the acoustic transducer based a parameter of the electrical sensor signal, such as frequency.
205 Citations
15 Claims
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1. An implantable medical device, comprising:
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an acoustic transducer configured to receive an acoustic interrogation signal; and a means for modulating a reflected acoustic wave from the acoustic transducer, the reflected acoustic wave including data to be transmitted from the implantable medical device. - 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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at least one sensor configured for sensing at least one parameter of a physiological condition and for generating an electrical sensor signal representative of the physiological condition; an acoustic transducer coupled to the at least one sensor, the acoustic transducer configured to convert a received acoustic interrogation signal into an electrical signal; a means for modulating a reflected acoustic wave from the acoustic transducer based on the electrical sensor signal, the reflected acoustic wave including one or more encoded sensor measurements sensed by the at least one sensor. - View Dependent Claims (13, 14, 15)
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Specification