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US 4,148,216 AGranted
Apparatus for determining the viscous behavior of a liquid during coagulation thereof
OwnerMau T. Do, Serge H. A. Saffar +1inventors
InventorsMau T. Do, Serge H. A. Saffar, Daniel S. Meimoun
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Abstract
A thromboelastographic apparatus comprises a body suspended to a resilient tape and immersed in operation in a liquid to be studied. The liquid is received in a receptacle which is oscillated about the axis of the tape with a predetermined frequency and amplitude. The amount of oscillatory movement impressed to the body is measured by induction.
Claims11
Apparatus for determining the viscous behaviour of a liquid during coagulation and lysis thereof and the like, comprising:
- support means,
- vertical torsion means having an end connected to said support means,
- an oscillatory body suspended to the other end of said vertical torsion means, whereby said torsion means tends to return said body to a predetermined angular position about the axis of the torsion means,
- means for supporting a receptacle for said liquid and for imparting to said receptacle an oscillatory movement of predetermined frequency and amplitude substnatially about said axis,
- and amplitude measuring means for measuring the amplitude of the oscillations of said oscillatory body when immersed in said liquid,
- said amplitude measuring means comprising:
- electrical induction means having a movable element operatively connected to said body for oscillatory movement therewith and a stationary element, having output terminal means, for delivering to said terminal means, an electrical signal whose amplitude is representative of the amplitude of the oscillatory movements of said body,
- and means for measuring the amplitude of said electrical signal.
5 more elements
Dependencies are inferred from the claim text.