Patent · US Expired

System for measuring bleeding time in vitro

US4604894A · kind A · utility

34Cited by

7References

18Claims

0Family size

Inventors

Michael Kratzer · Munich, DE
Gustav V. R. Born

Key dates

Filing date	Dec 20, 1983
Grant date	Aug 12, 1986
Priority date	—
Expiry date	Dec 20, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/4905
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A system for measuring bleeding time in vitro is disclosed in which blood is passed under pressure through a porous element and the resulting volumetric flow is measured. The porous element is provided with a through aperture and supported in such a manner that the blood moves through the aperture and not laterally into the porous element. The porous element can be soaked in a solution, for example, adenosine diphosphate, which coagulates the platelets and in this manner it is possible to reproduce in vivo bleeding conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.