Gas Sampling Line for Respiratory Gases

• US 20180153442A1
• Filed: 12/05/2017
• Published: 06/07/2018
• Est. Priority Date: 09/15/2008
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: ECKERBOM, Anders, Zyzanski, Robert
• Granted Patent: US 10,952,641 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices

Abstract

A gas sampling line having a channel for conducting respiratory gases from a patient respiratory interface to a gas monitor, the gas sampling line comprising, i.a., a gas sampling tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide. Use of a tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide, for sampling of respiratory gases; and a method for sampling of respiratory gases, the method comprising conducting respiratory gases through such a tube. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined above and a gas monitor connectable to the gas sampling line.

Claims

1-15. -15. (canceled)

16. A gas sampling line having a channel for conducting respiratory gases comprising:

a gas sampling tube surrounding a portion of the channel;

a drying assembly extends along the outside of the gas sampling tube, wherein the drying assembly comprises;

a casing comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide; and

a hydrophilic member disposed within the casing and being in fluid contact with the channel.

17. The gas sampling line according to claim 16, wherein the gas sampling tube is made by a material that is not permeable by moisture and/or water.

18. The gas sampling line according to claim 16, wherein the polyamide segments of the polyether block amide material is selected from the group consisting of polyamide-12, polyamide-11, and polyamide-12.12.

19. The gas sampling line according to claim 16, Wherein the first polyester block amide material comprises polyether segments and polyamide segments in a ratio of polyether to polyamide from about 60:

40 to about 40;

60, preferably from about 60;

40 to about 50;

50.

20. The gas sampling line according to claim 16, wherein the drying assembly further comprises a hydrophobic member disposed across the channel.

21. The gas sampling line according to claim 16, further comprising:

a patient respiratory interface connector adapted to couple the gas sampling line to a patient respiratory interface; and

a gas monitor connector adapted to couple the gas sampling line to a gas monitor.

22. A method for sampling of respiratory gases, the method comprising conducting respiratory gases through the gas sampling line of claim 16.

23. The method according to claim 22, wherein the polyamide segments of the polyether block amide material is selected from the group consisting of polyamide-12, polyamide-11, and polyamide-12.12.

24. The method according to claim 22, Wherein the first polyester block amide material comprises polyether segments and polyamide segments in a ratio of polyether to polyamide from about 60:

40 to about 40;

60, preferably from about 60;

40 to about 50;

50.

25. The method according to claim 22, wherein the drying assembly further comprises a hydrophobic member disposed across the channel.

29. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined in claim 21 and a gas monitor connectable to the gas sampling line.

30. The gas analysis system according to claim 29, further comprising a respiratory device connectable to the patient respiratory interface.

26. A gas drying assembly comprising:

a casing comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide; and

a hydrophilic member disposed within the casing and being in fluid communication with a channel that conduct respiratory gases.

27. The gas drying assembly according to claim 26, wherein the polyamide segments of the polyether block amide material is selected from the group consisting of polyamide-12, polyamide-11, and polyamide-12.12.

28. The gas drying assembly according to claim 26, Wherein the first polyester block amide material comprises polyether segments and polyamide segments in a ratio of polyether to polyamide from about 60:

40 to about 40;

60, preferably from about 60;

40 to about 50;

50.