Patent · US Expired

Measuring sensor head for determining the contents of gases in liquids

US4207160A · kind A · utility

4Cited by

5References

8Claims

0Family size

Assignee

Hellige GmbH · DE

Inventors

Horst Frankenberger · Bad Schwartau, DE
Dieter Heller · Lübeck, DE
Georg J. Ullrich · Freiburg im Breisgau, DE

Key dates

Filing date	Jun 13, 1977
Grant date	Jun 10, 1980
Priority date	—
Expiry date	Jun 13, 1997

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/4925
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A measuring sensor head for determining the contents of gases in liquids, particularly for transcutaneous determination of oxygen in blood, as well as a method of manufacturing such sensor head are disclosed. In accordance with the invention, the gas-permeable membrane which covers the front face of the sensor head and which, during use, is applied to the human skin, is preshaped to assume a cap-shaped configuration. This eliminates previously occurring measuring errors due to uncontrollable stresses causing thickness variations generated in conventional membranes and, moreover, provides for an improved sealing effect between the housing of the measuring head and the membrane.

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