Breathing circuit device

Patent metadata

Field	Value
Publication number	US-9950196-B2
Application number	US-201113044167-A
Country	US
Kind code	B2
Filing date	Mar 9, 2011
Priority date	Apr 8, 2010
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A breathing circuit device has a breathing gas line for forming a closed breathing system, with a cooling device with at least one cooling element for cooling a breathing gas sent through the breathing gas line. The at least one cooling element is separated from the breathing gas with a wall and the wall is a deformable wall, so that a direct contact can be established between the at least one cooling element and the deformable wall by means of a deformation of the deformable wall.

First claim

What is claimed is:

1. A breathing circuit device, comprising:
a breathing gas line forming a closed breathing system, wherein a breathing bag is part of the breathing gas line, said breathing bag comprising a breathing bag interior and a partition wall, said partition wall extending within said breathing bag interior;
a cooling device with at least one cooling element for cooling a breathing gas sent through the breathing gas line; and
a deformable wall separating the at least one cooling element from the breathing gas, the deformable wall establishing a direct contact between the at least one cooling element and the deformable wall by a deformation of the deformable wall, said deformable wall and said partition wall defining a channel, said breathing gas exiting said breathing bag via said channel, said at least one cooling element engaging said deformable wall in an area adjacent to said channel.

2. A breathing circuit device in accordance with claim 1 , further comprising:
a spring, wherein said spring applies a force to said breathing bag such that a pressure on a first side of the deformable wall with the cooling element is higher than a pressure on a second side of the deformable wall, so that the deformable wall is pressed onto the cooling element based on a pressure difference between the first side and the second side.

3. A breathing circuit device in accordance with claim 1 , wherein the cooling element lies directly on the area of said deformable wall adjacent to said channel.

4. A breathing circuit device in accordance with claim 2 , wherein the breathing gas is directly in contact with the first side of the deformable wall.

5. A breathing circuit device in accordance with claim 1 , further comprising heat insulation arranged at the cooling element on an outside.

6. A breathing circuit device in accordance with claim 1 , wherein the cooling element is arranged at least partly within the breathing bag and the deformable wall separates the cooling element from the breathing gas in the breathing bag.

7. A breathing circuit device in accordance with claim 1 , wherein a part of a breathing bag wall of the breathing bag forms the deformable wall, on which the cooling element directly lies.

8. A breathing circuit device in accordance with claim 1 , further comprising:
a container; and
a liquid or gel, wherein the liquid or gel is enclosed in the container with walls of the container and at least one of said walls of the container is formed by the deformable wall and the cooling element lies on the deformable wall of the container.

9. A breathing circuit device in accordance with claim 8 , wherein a hot side of the container is in thermal contact with the breathing gas and the cooling element lies on the deformable wall of the container as a cold side of the container.

10. A breathing circuit device in accordance with claim 1 , wherein the deformable wall is a film and/or a two-dimensional flexible surface part and/or a fabric.

11. A breathing circuit device in accordance with claim 1 , wherein the cooling element is a cooling container containing water ice or a latent heat storage means or a liquid of a sorption cooler or a zeolite cooler, which said liquid is to be evaporated.

12. A breathing circuit device in accordance with claim 1 , further comprising a carbon dioxide absorber for removing carbon dioxide from the breathing gas sent through the closed breathing system.

13. A breathing circuit device in accordance with claim 1 , further comprising an oxygen tank for storing oxygen and an oxygen feeding unit for introducing oxygen from the oxygen tank into the breathing gas line.

14. A breathing circuit device in accordance with claim 1 , wherein the breathing gas is indirectly or directly in thermal connection with the deformable wall.

15. A breathing circuit device in accordance with claim 2 , further comprising:
a housing wherein the deformable wall forms an outer wall of the housing, said spring being in direct contact with said housing and said breathing bag.

16. A breathing circuit device, comprising:
a breathing gas line forming a breathing system, said breathing system comprising a breathing bag, said breathing bag comprising a breathing gas inlet, a breathing gas outlet and a partition wall extending in an interior thereof;
a carbon dioxide absorber connected to the breathing system;
a cooling element for cooling a breathing gas sent through the breathing gas line;
a deformable wall separating the at least one cooling element from the breathing gas;
a breathing circuit device housing, said deformable wall and said partition wall defining a breathing gas channel, said breathing gas channel being in communication with said breathing gas inlet and said breathing gas outlet, said breathing gas entering said breathing bag via said breathing gas inlet and said breathing gas exiting said breathing bag via said breathing gas channel and said breathing gas outlet, said cooling element being arranged in direct contact with said deformable wall in an area of said deformable wall adjacent to said breathing gas channel; and
a pressure means for establishing a pressure on a side of the deformable wall opposite to the cooling element that is higher than a pressure on a side of the deformable wall with the cooling element such that the deformable wall establishes direct contact with the cooling element by a deformation of the deformable wall.

17. A breathing circuit device in accordance with claim 16 , wherein the breathing gas is directly in contact with the first side of the deformable wall.

18. A breathing circuit device in accordance with claim 16 , further comprising heat insulation arranged at the cooling element on an outside.

19. A breathing circuit device in accordance with claim 16 , wherein the deformable wall forms at least a portion of the breathing bag.

20. A breathing circuit device, comprising:
a breathing gas line forming a closed breathing system, said closed breathing system comprising a breathing bag, said breathing bag comprising a deformable wall, a breathing gas inlet, a breathing gas outlet and a partition wall extending in an interior of said breathing bag, said deformable wall forming at least a portion of said breathing bag, said breathing gas outlet being located at a spaced location from said breathing gas inlet, said breathing bag being in communication with said breathing gas line, said partition wall and another portion of said breathing bag forming a first fluid flow path portion, said deformable wall and said partition wall defining a second fluid flow path portion, said breathing gas inlet being in communication with said first fluid flow path portion, said second fluid flow path portion and said breathing gas outlet to define a breathing bag fluid flow path;
a housing, said breathing bag being arranged in said housing; and
a cooling device with at least one cooling element for cooling a breathing gas sent through the breathing gas line, said deformable wall separating the at least one cooling element from the breathing gas, the deformable wall establishing a direct contact between the at least one cooling element and the deformable wall by a deformation of the deformable wall, said breathing gas passing through said first fluid flow path portion in a first fluid flow direction, said breathing gas passing through said second fluid flow path portion in a second fluid flow direction, said first fluid flow direction being opposite said second fluid flow direction, said breathing

Assignees

• Koch Jochim
• Draeger Safety Ag & Co Kgaa

Inventors

• Koch Jochim

Classifications

• B63C11/24

  in closed circulation · CPC title

• A62B9/003

  Means for influencing the temperature or humidity of the breathing gas · CPC title

• A62B7/00 Primary

  Respiratory apparatus (for medical purposes A61M16/00) · CPC title