Respiratory monitoring
First Claim
1. A patient interface configured to receive gas exhaled by a patient, said patient interface comprising:
- a cannula tube having a first end and a second end, the first end configured to be inserted into a nostril of a patient, the cannula tube configured to direct exhaled gas from the patient from the first end to the second end;
a sensor positioned proximate the second end, the sensor configured to provide a signal based upon the gas, wherein the signal is indicative of a physiological parameter of the patient; and
an information element coupled to the sensor, wherein the information element comprises calibration information regarding the sensor.
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Accused Products
Abstract
A patient interface in accordance with one embodiment of the present invention is configured to be at least partially carried by a patient and to receive gas exhaled by the patient. The patient interface includes first and second cannula tubes each having a first end and a second end, the first ends are configured to be inserted into the nostrils of a patient, the first and second cannula tubes are configured to direct exhaled gas from the patient from the first ends to said second ends. The patient interface also includes first and second sensors positioned near the second ends, and the first and second sensors are configured to provide first and second signals based upon the gas, wherein the first and second signals are indicative of a physiological parameter of the patient. The patient interface also includes a communications link configured to provide the signal to a physiological monitor.
666 Citations
22 Claims
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1. A patient interface configured to receive gas exhaled by a patient, said patient interface comprising:
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a cannula tube having a first end and a second end, the first end configured to be inserted into a nostril of a patient, the cannula tube configured to direct exhaled gas from the patient from the first end to the second end; a sensor positioned proximate the second end, the sensor configured to provide a signal based upon the gas, wherein the signal is indicative of a physiological parameter of the patient; and an information element coupled to the sensor, wherein the information element comprises calibration information regarding the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for detecting a physiological parameter of a patient, comprising:
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a cannula tube having a first end and a second end, the cannula tube configured to direct gas exhaled by a patient from the first end to the second end; and a sensing module positioned proximate the second end, the sensing module comprising; a plurality of sensors, each sensor configured, when activated, to provide a signal generated based at least in part on a composition of gas incident on the sensor, the signal indicative of a physiological parameter of a patient; and a sensor selector configured to cause the gas exhaled by the patient to be directed to an active sensor, the active sensor selected from the plurality of sensors. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of determining a physiological parameter of a patient, comprising:
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receiving, in a patient interface, gas exhaled from a patient, wherein the patient interface comprises a sensor and an information element, wherein the information element comprises calibration information regarding the sensor; and generating a signal indicative of a physiological parameter of the patient by sensing a parameter of the gas with the sensor. - View Dependent Claims (19, 20, 21, 22)
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Specification