Carbon dioxide-sensing airway products and technique for using the same
An airway device is provided that may track the flow of respiratory gases through the device with sensing elements at a plurality of locations along the gas flow path of the device. Such a device may be useful for assessing a variety of clinical states, for adjusting patient ventilator settings, or for determining whether or not an airway device has been properly inserted into a patient airway.
1. A medical device comprising:
a conduit adapted to transfer a gas to or from a patient; and
a plurality of sensing components associated with a respective plurality of locations on the conduit, wherein the plurality of sensing components is adapted to provide a signal related to a carbon dioxide gas in the conduit at the respective plurality of locations, wherein at least one of the plurality of sensing components comprises a borosilicate substrate having an acrylic binder incorporated within the borosilicate substrate, and a carbon dioxide-responsive indicator solution disposed on the borosilicate substrate wherein the acrylic binder increases a hydrophobicity of the borosilicate substrate relative to borosilicate alone.
2. The medical device of claim 1 , wherein the conduit comprises an endotracheal tube.
3. The medical device of claim 1 , comprising a ventilator to which the conduit is operatively connected.
4. The medical device of claim 1 , comprising a selective barrier disposed on at least one sensing component that is substantially impermeable to water.
5. The medical device of claim 1 , comprising a temperature sensor adapted to provide signal related to a gas temperature, a humidity sensor, or an ambient pressure sensor.
6. The medical device of claim 1 , wherein at least one of the plurality of sensing components comprises a chemical indicator.
7. The medical device of claim 1 , wherein at least one of the plurality of sensing components comprises an electrochemical transducer.
8. The medical device of claim 1 , wherein at least one of the plurality of sensing components comprises a non-optical transducer.
9. The medical device of claim 1 , wherein at least one of the plurality of sensing components comprises an optical transducer.
10. The medical device of claim 1 , wherein at least one of the plurality of sensing components comprises a quantum-restricted element.
11. The medical device of claim 1 , wherein the conduit comprises at least one lumen adapted to transfer gas to at least one of the plurality of sensing components.
12. The medical device of claim 1 , wherein at least one of the plurality of sensing components is embedded in the conduit.
13. A system comprising:
a conduit adapted to transfer a gas to or from a patient;
a plurality of sensing components associated with a respective plurality of locations on the conduit, wherein the plurality of sensing components is adapted to provide a signal related to a carbon dioxide gas in the conduit at the respective plurality of locations, wherein at least one of the plurality of sensing components comprises a borosilicate substrate having an acrylic binder incorporated within the borosilicate substrate, and a carbon dioxide-responsive indicator solution is disposed on the borosilicate substrate and wherein the borosilicate substrate having the acrylic binder is more hydrophobic than borosilicate alone; and
a monitor adapted to be operatively coupled to the plurality of sensing components.
14. The system of claim 13 , wherein the conduit comprises an endotracheal tube.
15. The system of claim 13 , comprising a ventilator to which the conduit is operatively connected.
16. The system of claim 13 , comprising a selective barrier disposed on at least one sensing component that is substantially impermeable to water.
17. The system of claim 13 , comprising a temperature sensor adapted to provide signal related to a gas temperature, a humidity sensor, or an ambient pressure sensor.
18. The system of claim 13 , wherein at least one of the plurality of sensing components comprises a chemical indicator.
19. The system of claim 13 , wherein at least one of the plurality of sensing components comprises an electrochemical transducer.
20. The system of claim 13 , wherein at least one of the plurality of sensing components comprises a non-optical transducer.
21. The system of claim 13 , wherein at least one of the plurality of sensing components comprises an optical transducer.
22. The system of claim 13 , wherein at least one of the plurality of sensing components comprises a quantum-restricted element.
23. The system of claim 13 , wherein the conduit comprises at least one lumen adapted to transfer gas to at least one of the plurality of sensing components.
24. The system of claim 13 , wherein at least one of the plurality of sensing components is embedded in the conduit.
25. A method of manufacturing a medical device, comprising:
providing a conduit adapted to transfer a gas to or from a patient; and
providing a plurality of sensing components associated with a respective plurality of locations on the conduit, wherein the plurality of sensing components is adapted to provide a signal related to a carbon dioxide gas in the conduit at the respective plurality of locations, and wherein at least one of the plurality of sensing components comprises a borosilicate substrate having an acrylic binder incorporated within the borosilicate substrate, and a carbon dioxide-responsive indicator solution is disposed on the borosilicate substrate and wherein the borosilicate substrate having the acrylic binder is more hydrophobic than borosilicate alone.
26. The method of claim 25 , wherein the providing the conduit comprises providing an endotracheal tube.
27. The method of claim 25 , comprising providing a selective barrier disposed on at least one sensing component that is substantially impermeable to water.
28. The method of claim 25 , comprising providing a temperature sensor adapted to provide signal related to a gas temperature.
29. The method of claim 25 , wherein providing the plurality of sensing components comprises providing at least one sensing component comprising a chemical indicator.
30. The method of claim 25 , wherein providing the plurality of sensing components comprises providing at least one sensing component comprising an electrochemical transducer.
31. The method of claim 25 , wherein providing the plurality of sensing components comprises providing at least one sensing component comprising a non-optical transducer.
32. The method of claim 25 , wherein providing the plurality of sensing components comprises providing at least one sensing component comprising an optical transducer.
33. The method of claim 25 , wherein providing the plurality of sensing components comprises providing at least one sensing component comprising a quantum-restricted element.
34. The method of claim 25 , wherein providing the conduit comprises providing at least one lumen adapted to transfer gas to at least one of the plurality of sensing components.
35. The method of claim 25 , wherein providing the plurality of sensing components comprises embedding at least one of the plurality of sensing components is in the conduit.
36. The method of claim 25 , comprising providing a humidity sensor.
37. The method of claim 25 , comprising providing an ambient pressure sensor.