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US 8,527,023 B2Granted
Device and method for transcutaneous determination of blood gases
AssigneeSentec Ltd
InventorsJosef Hayoz, Rolf Wagner
Life of this patent
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AssigneeSentec Ltd
InventorsJosef Hayoz, Rolf Wagner
Estimating the term…
The device for the transcutaneous determination of blood gases including a transcutaneous sensor for the measurement of at least one of the parameters of skin carbon dioxide partial pressure (PsCO2) and skin oxygen partial pressure (PsO2) includes at least one sensor for the measurement of the tissue blood flow (F) local with respect to the transcutaneous sensor, and includes a device for the calculation of at least one of the parameters of transcutaneous carbon dioxide partial pressure (tcpCO2) and transcutaneous oxygen partial pressure (tcpO2) from the measured skin carbon dioxide partial pressure (PsCO2) or the measured skin oxygen partial pressure (PsO2), with a factor dependent on the local tissue blood flow (F) being taken into account in the calculation of at least one of the parameters of transcutaneous carbon dioxide partial pressure (tcpCO2) and transcutaneous oxygen partial pressure (tcpO2).
A device for a transcutaneous determination of blood gases comprising:
A method for transcutaneous blood gas monitoring, comprising:
A method comprising using a sensor for a transcutaneous determination of blood gases, the sensor comprising a transcutaneous sensor for a measurement of a skin carbon dioxide partial pressure (PsCO2) and comprising sensor for a pulse spectroscopic or pulse oximetric measurement of the arterial oxygen saturation (SpO2), the method comprising determining a local tissue blood flow (F) using the sensor for the pulse spectroscopic or pulse oximetric measurement mid calculating the transcutaneous carbon dioxide partial pressure (tcpCO2) from the measured skin carbon dioxide partial pressure (PsCO2) taking into account the local tissue blood flow (F) in accordance with the equation:
A method comprising using a sensor for a transcutaneous determination of blood gases, the sensor comprising a transcutaneous sensor for a measurement of the skin carbon dioxide partial pressure (PsCO2), the sensor comprising a sensor for a pulse spectroscopic or pulse oximetric measurement of an arterial oxygen saturation (SpO2) and comprising a heating device, the method comprising calculating local tissue blood flow (F) wherein at least the pulse spectroscopic or pulse oximetric measurement or at least the heating device is taken into account for a determination of the local tissue blood flow (F) and comprising calculating transcutaneous carbon dioxide partial pressure (tcpC02) from the measured skin carbon dioxide partial pressure (PsC02) taking into account the local tissue blood flow (F), wherein the at least one sensor for the measurement of the local tissue blood flow (F) detects a region of up to 2 cm distance from a contact surface of the transcutaneous sensor.
Dependencies are inferred from the claim text.