Patent ID: 6723216
Filing Date: 2004-04-20
Classification: A61M,G01N

Abstract:
A method for detection of a bubble in a liquid which is placed in a measuring chamber and is in contact with a sensor for measuring the partial pressure of a particular gas in the liquid characterized in(a) performing a first measurement of the partial pressure of the particular gas in the liquid at a first pressure in the measuring chamber, (b) changing the pressure in the measuring chamber to a second pressure, (c) performing a second measurement of the partial pressure of said gas in the liquid at the second pressure in the measuring chamber, (d) providing an expected result of the second measurement based on the first measurement and assuming that no bubbles are present in the measuring chamber during any of the measurements, and (e) comparing the actual result of the second measurement with the expected result and drawing a conclusion on the presence of a gas bubble in the liquid based on said comparison.