Method and an arrangement for continuously measuring the partial pressure of a gas in a sample
US4094305A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1976 |
| Grant date | Jun 13, 1978 |
| Priority date | — |
| Expiry date | Aug 6, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1477
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and an arrangement for continuously measuring the partial pressure of a gas in a sample, particularly of oxygen dissolved in blood flowing through muscle tissue which is covered by a skin layer, comprises a support probe which is adapted to be positioned intermediate the skin layer and a portion of the sample so that the probe is fixedly held in position against the sample portion. A polarographic cell is mounted on the probe and has a gas-measuring part which is in firm engagement with the sample portion so as to generate a signal indicative of the amount of gas being diffused from the sample portion. The polarographic cell is interchangeably and detachably mounted on the probe so as to facilitate sterilization of the various parts of the arrangement. A plurality of gas-measuring electrodes are utilized in combination with an indicating arrangement to either measure the distribution of the oxygen gas being diffused over an area of the sample portion or to measure the average value of gas being diffused from the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.