DEVICE AND METHOD FOR TRANSCUTANEOUS DETERMINATION OF BLOOD GASES
First Claim
1. A device for the transcutaneous determination of blood gases comprising:
- 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), at least one sensor for the measurement of the tissue blood flow (F) local with respect to the transcutaneous sensor, and 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) respectively, 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).
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Accused Products
Abstract
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).
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Citations
28 Claims
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1. A device for the transcutaneous determination of blood gases comprising:
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), at least one sensor for the measurement of the tissue blood flow (F) local with respect to the transcutaneous sensor, and 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) respectively, 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). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 24, 25, 26)
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12. A method for transcutaneous blood gas monitoring, comprising:
detecting at least one of the parameters of skin carbon dioxide partial pressure (PsCO2) and skin oxygen partial pressure (PsO2), and detecting a local tissue blood flow (F), and calculating 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), wherein the local tissue blood flow (F) is 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). - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 27, 28)
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22. A method comprising using a sensor for the transcutaneous determination of blood gases, the sensor comprising a transcutaneous sensor for the measurement of the skin carbon dioxide partial pressure (PsCO2) and comprising sensor for the 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 and 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).
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23. A method comprising using a sensor for the transcutaneous determination of blood gases, the sensor comprising a transcutaneous sensor for the measurement of the skin carbon dioxide partial pressure (PsCO2), the sensor comprising a sensor for the pulse spectroscopic or pulse oximetric measurement of the 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 the determination of the local tissue blood flow (F) and comprising calculating transcutaneous carbon dioxide partial pressure (tcpCO2) from the measured skin carbon dioxide partial pressure (PsCO2) taking into account the local tissue blood flow (F).
Specification