Method for measuring the transcutaneous CO2 partial pressure on an ear lobe
US7474908B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jun 16, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1491
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a process for measuring partial transcutaneous CO2 pressure on an earlobe by means of a sensor having a measuring device for measuring the partial transcutaneous CO2 pressure and a heating system for heating a sensor contact surface for contact with the earlobe, the sensor contact surface is heated. During a first phase, the sensor contact surface is kept at an elevated temperature of at least 41.5° C. in order to prevent the measured value of partial transcutaneous CO2 pressure from exceeding, due to the measurement process itself, the partial transcutaneous CO2 pressure achieved after stabilization. The temperature of the sensor contact surface is then reduced to between 37° C. and 41° C. This facilitates considerably faster evaluation of the measured values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.