Patent · US Expired

Flow-through measurement cell for extracorporeal measurement of blood parameters

US5871627A · kind A · utility

8Cited by

0References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Klaus Abraham-Fuchs · Erlangen, DE
Walter Gumbrecht · Herzogenaurach, DE
Christofer Hierold · Munich, DE

Key dates

Filing date	May 23, 1997
Grant date	Feb 16, 1999
Priority date	—
Expiry date	May 23, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG01L19/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A flow-through cell for extra-corporeal measurement of blood parameters has a pressure sensor arranged in a measurement chamber. The pressure sensor has an active pressure sensor part and an inactive pressure sensor part. The inactive pressure sensor part is constructed identically to the active pressure sensor part, and is insulated from the pressure prevailing in the measurement chamber by a rigid covering. The active and inactive sensor parts produce respective electrical signals which are subject to the same disturbing influences, so that by subtracting the signal of the inactive sensor part from the signal of the active sensor part, a measured value free of disturbing influences is obtained.

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