Coagulometer and method of measuring of the time of coagulation of samples of fluid products
First Claim
1. A method, for ascertaining the progress of coagulation of a sample of liquid, comprising the steps of:
- (i) introducing the sample into a cup having its base shaped to form an endless path for rolling of a ball disposed in said cup,(ii) imparting to the cup, with the ball and sample therein, a constant non-rotary circulating motion to cause the ball to roll, in the liquid, in said path, and(iii) detecting the occurrence of a slowing of the rolling of the ball resulting from thickening of the liquid.
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Accused Products
Abstract
Method of measuring the time of coagulation of samples of fluid products such as, for example, samples of blood plasma, wherein the dose of liquid substance to be analyzed is introduced into a small cup (1) the base (1a) of which is shaped to serve as a circular rolling path (1b) for a ball (2) disposed in the lower part of the cup which is actuated with a non-rotary circular movement be means of an eccentric (3-3a) causing a rotation of the ball in a circular path in the base of the cup. The gradual slowing and/or halting of the rotary movement of the ball caused by the thickening or coagulation of the sample of the medium or liquid substance contained in the cup, for example following the introduction of a reactant, is ascertainable visually or, preferably, by any suitable automatic detection system.
21 Citations
12 Claims
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1. A method, for ascertaining the progress of coagulation of a sample of liquid, comprising the steps of:
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(i) introducing the sample into a cup having its base shaped to form an endless path for rolling of a ball disposed in said cup, (ii) imparting to the cup, with the ball and sample therein, a constant non-rotary circulating motion to cause the ball to roll, in the liquid, in said path, and (iii) detecting the occurrence of a slowing of the rolling of the ball resulting from thickening of the liquid. - View Dependent Claims (2, 3)
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4. A coagulometer comprising:
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(a) a cup to receive a sample of liquid, said cup including a base shaped to provide an endless rolling path for a ball; (b) a ball disposed in said cup and rollable on said path; (c) a base structure; (d) guiding means interconnecting said base structure and said cup and permitting motion of the cup relative to said base structure; (e) driving means connected to said cup for imparting to the cup a non-rotary circulating motion urging said ball to travel along said endless path. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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Specification