Determining mechanical properties via ultrasound-induced resonance
First Claim
1. A device for evaluation of hemostasis, the device being configured for used with an acoustic interrogation system to measure at least one viscoelastic property of a test sample of blood, the device comprising:
- a housing; and
a plurality of test chambers, each comprising a resonant portion, wherein the plurality of test chambers are each at least partially defined by the housing, wherein each of the plurality of test chambers is designed to hold a test sample of blood combined with a reagent or combination of reagent and to be interrogated by an acoustic interrogation system to determine a plurality of hemostatic parameters of the test samples,wherein each resonant portion of a test chamber of the plurality of test chambers is configured to generate resonance from one or more acoustic pulses directed into the test chamber by the acoustic interrogation system, and wherein the each resonant portion is configured to generate a shear wave that is axisymmetric, in part, from applied acoustic radiation force exerted by the applied one or more acoustic pulses.
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Accused Products
Abstract
A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms. The device also includes a data processor that can receive the received electrical waveforms; estimate a difference in the received electrical waveforms that results at least partially from movement of the sample; and estimate a mechanical property of the sample by comparing at least one feature of the estimated difference to at least one predicted feature, wherein the at least one predicted feature is based on a model of an effect of the chamber wall. Finally, the device can also include a controller configured to control the timing of the ultrasound transmitter and data processor.
465 Citations
28 Claims
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1. A device for evaluation of hemostasis, the device being configured for used with an acoustic interrogation system to measure at least one viscoelastic property of a test sample of blood, the device comprising:
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a housing; and a plurality of test chambers, each comprising a resonant portion, wherein the plurality of test chambers are each at least partially defined by the housing, wherein each of the plurality of test chambers is designed to hold a test sample of blood combined with a reagent or combination of reagent and to be interrogated by an acoustic interrogation system to determine a plurality of hemostatic parameters of the test samples, wherein each resonant portion of a test chamber of the plurality of test chambers is configured to generate resonance from one or more acoustic pulses directed into the test chamber by the acoustic interrogation system, and wherein the each resonant portion is configured to generate a shear wave that is axisymmetric, in part, from applied acoustic radiation force exerted by the applied one or more acoustic pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification