Wireless beacon for time-reversal acoustics, method of use and instrument containing thereof
First Claim
1. A time-reversal acoustics system comprising:
- a wireless beacon including a piezoelectric element, anda time-reversal electronic unit having an input connected to an electromagnetic wave receiver and an output connected to an acoustic transmitter means,wherein said electronic unit is to provide said acoustic transmitter means with an initial signal a driving signal formed by time-reversing of an electromagnetic wave feedback signal received from said wireless beacon via the electromagnetic wave receiver in response to an acoustic wave signal generated by said acoustic transmitter means.
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Abstract
A time-reversal acoustics system includes a wireless beacon with a piezoelectric element adapted to receive an initial acoustic signal from each of a plurality of transducers combined in a single transmitter and controlled individually by an electronic unit. The initial acoustic signal is transformed by the piezoelectric element into an electromagnetic wave feedback signal and transmitted wirelessly to the receiver connected to the input of the electronic unit. The electronic unit receives the feedback signal and transforms it using the time-reversal principles to generate a driving signal for each transducer. All such driving signals are then sent simultaneously to all transducers to deliver high intensity acoustic energy to the beacon. The invention can be used advantageously to non-invasively recharge implant batteries, control drug eluting from an implant, in an image-guided drug-delivery apparatus, etc.
35 Citations
10 Claims
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1. A time-reversal acoustics system comprising:
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a wireless beacon including a piezoelectric element, and a time-reversal electronic unit having an input connected to an electromagnetic wave receiver and an output connected to an acoustic transmitter means, wherein said electronic unit is to provide said acoustic transmitter means with an initial signal a driving signal formed by time-reversing of an electromagnetic wave feedback signal received from said wireless beacon via the electromagnetic wave receiver in response to an acoustic wave signal generated by said acoustic transmitter means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for delivery of focused acoustic energy to a target area in an object, said method comprising the steps of:
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a) providing a time-reversal system comprising a time-reversal electronic unit having an input connected to an electromagnetic wave receiver and an output connected to an acoustic transmitter means positioned in contact with said object, b) providing a wireless beacon positioned at the target area and including a piezoelectric element, c) generating an initial signal by said electronic unit to cause said acoustic transmitter means to send an initial acoustic wave towards said wireless beacon, d) generating an initial electromagnetic wave signal by said wireless beacon in response to said initial acoustic wave, e) receiving said initial electromagnetic wave signal by said electromagnetic wave receiver and sending it to the input of said electronic unit, f) generating a driving signal formed by time-reversing of said initial electromagnetic wave signal, and g) sending said driving signal to said acoustic transmitter means to generate an acoustic wave to deliver focused acoustic energy to said target area in said object. - View Dependent Claims (8, 9, 10)
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Specification