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Apparatus for assaying viscosity changes in fluid samples and method of conducting same

  • US 5,447,440 A
  • Filed: 10/28/1993
  • Issued: 09/05/1995
  • Est. Priority Date: 10/28/1993
  • Status: Expired due to Term
First Claim
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1. A method of measuring a change in the viscosity of a fluid sample comprising:

  • (a) charging a housing adapted for insertion into an external reading device with a fluid sample, said housing (i) equipped with sample displacement means for applying a force against said fluid sample effective to displace at least a portion of said fluid sample within said housing, (ii) contained within said housing, at least one reagent capable after contact with said fluid sample of promoting a change in the viscosity of said fluid sample, and (iii) contained within said housing, at least one sensing means capable of detecting the displacement of said fluid sample;

    (b) applying said force to said fluid sample, such that said reagent comes into contact with said fluid sample and at least a portion of said fluid sample is displaced across said sensing means;

    (c) detecting changes through said sensing means, in the displacement of said fluid sample, which changes are a measure of the change in the viscosity of said fluid sample.

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