Hemostasis analyzer and method
First Claim
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1. An apparatus for measuring hemostasis comprising:
- a container adapted to hold a blood sample such that a surface of the blood sample is substantially unconstrained in one direction;
a shaker adapted to displace the container in order to cause an excitation of the blood sample and corresponding resonant displacement of the surface along the one direction; and
a sensor adapted to determine the resonant displacement of the surface along the one direction, wherein the direction is vertical and the surface is a bottom surface of the blood sample.
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Abstract
A method and device for blood hemostasis analysis is disclosed. A blood sample is displaced to reach a resonant state. The resonant frequency of the blood sample is determined before, during and after a hemostasis process. The changes in the resonant frequency of the blood sample are indicative of the hemostasis characteristics of the blood sample.
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Citations
8 Claims
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1. An apparatus for measuring hemostasis comprising:
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a container adapted to hold a blood sample such that a surface of the blood sample is substantially unconstrained in one direction; a shaker adapted to displace the container in order to cause an excitation of the blood sample and corresponding resonant displacement of the surface along the one direction; and a sensor adapted to determine the resonant displacement of the surface along the one direction, wherein the direction is vertical and the surface is a bottom surface of the blood sample.
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2. A method for measuring hemostasis comprising:
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providing a blood sample; exciting the blood sample to a resonant state by displacing the blood sample to create displacement of a surface of the blood sample in a direction; observing the amplitude and frequency of the displacement of the surface of the blood sample; determining a resonant frequency of the blood sample to provide a plurality of resonant frequencies of the blood sample based upon the observed amplitude and frequency of the surface; and deriving a hemostasis characteristic of the blood sample from the plurality of resonant frequencies of the blood sample. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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Specification