Device for the combined measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure on an ear lobe
First Claim
1. A device for a combined measurement of arterial oxygen saturation and transcutaneous CO2 partial pressure on an ear lobe, comprising a sensor which has means for pulse oximetric measurement of the arterial oxygen saturation;
- means for measurement of the transcutaneous CO2 partial pressure; and
means for warming a sensor contact surface intended for contact with the ear lobe;
said device further comprising means for attaching said device to an ear lobe such that said device is in contact with the ear lobe with a minimal pressure on the ear lobe for minimizing interference with the pulse oximetric measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure, said sensor being rotatably attached to said means for attaching said device to an ear lobe, said means for pulse oximetric measurement of the arterial oxygen saturation including at least two LEDs and one photodiode which are arranged so that when the device is attached to an ear lobe they are located on the same side of the ear lobe, and which are arranged in depressions forming light channels and point towards the sensor contact surface.
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Accused Products
Abstract
A device for the combined measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure on an ear lobe comprises a sensor. The sensor has means for pulse oximetric measurement of the arterial oxygen saturation, means for measurement of the transcutaneous CO2 partial pressure and means for warming a sensor contact surface intended for contact with the ear lobe. The device makes simple and reliable measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure possible on an ear lobe.
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Citations
29 Claims
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1. A device for a combined measurement of arterial oxygen saturation and transcutaneous CO2 partial pressure on an ear lobe, comprising a sensor which has means for pulse oximetric measurement of the arterial oxygen saturation;
- means for measurement of the transcutaneous CO2 partial pressure; and
means for warming a sensor contact surface intended for contact with the ear lobe;
said device further comprising means for attaching said device to an ear lobe such that said device is in contact with the ear lobe with a minimal pressure on the ear lobe for minimizing interference with the pulse oximetric measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure, said sensor being rotatably attached to said means for attaching said device to an ear lobe, said means for pulse oximetric measurement of the arterial oxygen saturation including at least two LEDs and one photodiode which are arranged so that when the device is attached to an ear lobe they are located on the same side of the ear lobe, and which are arranged in depressions forming light channels and point towards the sensor contact surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- means for measurement of the transcutaneous CO2 partial pressure; and
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19. A device for combined measurement of arterial oxygen saturation and transcutaneous CO2 partial pressure on an ear lobe, comprising a sensor which has means for pulse oximetric measurement of the arterial oxygen saturation;
- means for measurement of the transcutaneous CO2 partial pressure; and
means for warming a sensor contact surface intended for contact with the ear lobe, said device further comprising means for attaching said device to an ear lobe such that said device is in contact with the ear lobe with a minimal pressure on the ear lobe for minimizing interference with the pulse oximetric measurement of the arterial oxygen saturation and measurement of the transcutaneous CO2 partial pressure, said sensor being rotatably attached to said means for attaching said device to an ear lobe. - View Dependent Claims (20, 21, 22, 23, 24)
- means for measurement of the transcutaneous CO2 partial pressure; and
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25. A method for measuring arterial oxygen saturation and trancutaneous CO2 partial pressure on an ear lobe, comprising the steps of
attaching, to an ear lobe, a device comprising means for attaching said device to the ear lobe and a sensor having means for pulse oximetric measurement of the arterial oxygen saturation, means for measurement of the transcutaneous CO2 partial pressure, and a contact surface for contacting the ear lobe, said sensor being rotatable attached to said means for attaching said device to the ear lobe, so that said contact surface of the sensor contacts the ear lobe so as to minimize interference with the pulse oximetric measurement of the arterial oxygen saturation and the measurement of the transcutaneous CO2 partial pressure; -
warming said contact surface to a temperature such as produces dilation and arterialization of the ear lobe in proximity to said contact surface, and measuring said arterial oxygen saturation; and
measuring said transcutaneous CO2 partial pressure, wherein the steps of measuring said arterial oxygen saturation and measureing said transcutaneous CO2 partial pressure are performed concurrently with one another. - View Dependent Claims (26, 27, 28, 29)
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Specification