Patent · US Expired

Process for measuring blood platelet aggregation or blood coagulation

US6159741A · kind A · utility

6Cited by

8References

12Claims

0Family size

Assignees

Dr. Michael Kratzer GmbH · DE
VDG-Von der Goltz GmbH · DE

Inventors

Michael Kratzer · Munich, DE
Volker Freiherr Von Der Goltz · Dorfen, DE

Key dates

Filing date	Dec 11, 1998
Grant date	Dec 12, 2000
Priority date	—
Expiry date	Dec 11, 2018

Classification

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

Abstract

A process and device are disclosed for measuring blood platelet aggregation or blood coagulation. The blood flows through an opening in a part and the occlusion of the opening is measured. The pressure fall (.DELTA.P) formed during occlusion of the opening is measured at predetermined time intervals (dt) and the volume flow (I) is changed to correspond to a predetermined function which simulates the flow resistance (R.sub.v) of a capillary upstream of the opening. Alternatively, the pressure (.DELTA.P) is kept constant during the predetermined time intervals (dt) and afterwards, when the volume flow (I) has diminished by a certain value, the pressure is adjusted until it corresponds to the function.

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