Airway adaptor

Patent metadata

Field	Value
Publication number	US-9566018-B2
Application number	US-83688210-A
Country	US
Kind code	B2
Filing date	Jul 15, 2010
Priority date	Jul 16, 2009
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

An airway adaptor includes: an airway case; and an expired gas guiding portion which is connected to the airway case to introduce a respiratory gas to the airway case. The airway case includes: a first respiratory gas flow path in which the respiratory gas flows in a first direction; and a second respiratory gas flow path in which the respiratory gas flows in a second direction opposite to the first direction.

First claim

What is claimed is:

1. An airway adaptor comprising:
an airway case to which a gas sensor is attachable;
an expired gas guiding portion which is connected to the airway case to introduce a respiratory gas to the airway case;
a partition wall;
an elongated first passage adapted to introduce the respiratory gas from the expired gas guiding portion of the airway case; and
an elongated second passage adapted to discharge the respiratory gas from the elongated first passage, which has been introduced to the airway case and returned in the airway case without being communicated with the expired gas guiding portion, to outside of the airway case,
wherein the partition wall partitions the elongated first passage and the elongated second passage such that a portion of the elongated first passage is parallel to a portion of the elongated second passage, and
wherein the respiratory gas in the portion of the elongated first passage flows in a first direction and the respiratory gas in the portion of the elongated second passage flows in a second direction opposite and in reverse with respect to the first direction.

2. The airway adaptor according to claim 1 , wherein the expired gas guiding portion is detachably connected to the airway case.

3. The airway adaptor according to claim 1 , wherein the airway case includes a first side face and a second side face which are opposed to each other, and a carbon dioxide sensor is attachable to the first side face and the second side face.

4. The airway adaptor according to claim 1 , wherein the elongated first passage and the elongated second passage are juxtaposed to each other.

5. The airway adaptor according to claim 1 , wherein one of the elongated first passage and the elongated second passage surrounds the other of the elongated first passage and the elongated second passage.

6. The airway adaptor according to claim 1 , wherein a nose cup for surrounding a periphery of nostrils is disposed on one of the expired gas guiding portion and the airway case.

7. The airway adaptor according to claim 1 , wherein a part of the airway adaptor is disposed on a nasal mask shell of a nasal mask in which positive pressure ventilation is enabled, and the airway case is projected to an outside of the nasal mask shell.

8. The airway adaptor according to claim 1 , wherein the expired gas guiding portion is a nasal tube which is to be inserted into nostrils of a living body.

9. The airway adaptor according to claim 1 , wherein the expired gas guiding portion includes:
a first guiding portion which guides the respiratory gas from nostrils of a living body; and
a second guiding portion which guides the respiratory gas from a mouth of the living body.

10. The airway adaptor according to claim 9 , wherein the respiratory gas which is guided by the first guiding portion and the respiratory gas which is guided by the second guiding portion are joined together in the airway case or at an upstream side of the airway case.

11. The airway adaptor according to claim 1 , wherein a part of the airway adaptor is disposed on a face mask shell of a face mask in which positive pressure ventilation is enabled, and the airway case is projected to an outside of the face mask shell.

12. The airway adaptor according to claim 9 , wherein the first guiding portion is a nasal tube which is to be inserted into the nostrils of the living body.

13. The airway adaptor according to claim 1 , wherein the elongated first passage is separate from and adjacent to the elongated second passage.

14. The airway adaptor according to claim 1 , wherein the airway case includes a respiratory gas flow path through which the respiratory gas passes, the respiratory gas flow path includes:
the elongated first passage in which the respiratory gas flows in the first direction; and
the elongated second passage in which the respiratory gas flows in the second direction opposite and in reverse with respect to the first direction, and
the elongated first passage and the elongated second passage are connected to each other in the respiratory gas flow path through which the respiratory gas passes.

15. The airway adaptor according to claim 14 , wherein the portion of the elongated first passage is parallel to the entire elongated second passage.

16. The airway adaptor according to claim 1 , wherein the elongated first passage is connected to the expired gas guiding portion to introduce the expiratory gas from the expired gas guiding portion to the airway case, and the elongated second passage is connected to the airway case without being directly connected to the expired gas guiding portion to discharge the expiratory gas from the elongated first passage to the outside of the airway case.

17. The airway adaptor according to claim 1 , wherein the partition wall is arranged between a part of the elongated first passage and a part of the elongated second passage, and the partition wall is defined by at least one of the part of the elongated first passage and the part of the elongated second passage.

18. The airway adaptor according to claim 1 , further comprising:
the gas sensor is configured to measure a gas in the respiratory gas, and is attached to the airway case.

19. The airway adaptor according to claim 18 , wherein the gas sensor is a carbon dioxide sensor, and the gas to be measured includes carbon dioxide.

20. The airway adaptor according to claim 1 , wherein a first part of the airway case is fixed to a shell of a mask, which is to be attached to a face of a living body.

21. The airway adaptor according to claim 20 , wherein a part of the expired gas guiding portion is disposed in the shell of the mask, and at least a second part of the airway case is projected to an outside of the shell of the mask.

22. A mask adapted to be attached to a face of a living body, the mask comprising:
a shell configured to cover at least one of a nose and a mouth of the living body when the mask is attached to the face of the living body; and
the airway adaptor of claim 1 , wherein the airway adapter is attached to the shell.

Assignees

• Yamamori Shinji
• Nihon Kohden Corp

Inventors

• Yamamori Shinji

Classifications

• A61B5/682

  Mouth, e.g., oral cavity; tongue; Lips; Teeth · CPC title

• A61B5/6803

  Head-worn items, e.g. helmets, masks, headphones or goggles · CPC title

• A61B5/097 Primary

  Devices for facilitating collection of breath or for directing breath into or through measuring devices · CPC title

• A61B5/0836 Primary

  Measuring rate of CO2 production · CPC title

• A61B5/6819

  Nose · CPC title