Airway adaptor and biological information acquiring system

Patent metadata

Field	Value
Publication number	US-9393376-B2
Application number	US-201313768514-A
Country	US
Kind code	B2
Filing date	Feb 15, 2013
Priority date	Mar 5, 2012
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

An airway adaptor includes: an airway case including a gas passage, the airway case adapted to be attachable to a part of a carbon dioxide sensor configured to detect a concentration of carbon dioxide contained in exhalation, flowing into the gas passage, of the subject, the exhalation; a nasal cannula having a pair of insertion portions inserted into nostrils of the subject to guide exhalation from the nostrils to the gas passage; a mouth guide placed in front of a mouth of the subject to guide exhalation from the mouth to the gas passage; a light-emitting element supported by one of the insertion portions; and a light-receiving element supported by the other of the insertion portions. When the insertion portions are inserted into the nostrils, the light-emitting element and the light-receiving element are opposed to each other across a nasal septum of the subject.

First claim

What is claimed is:

1. An airway adaptor which is adapted to be attached to a face of a subject, the airway adaptor comprising:
an airway case which includes a gas passage, the airway case adapted to be attachable to a part of a carbon dioxide sensor configured to detect a concentration of carbon dioxide contained in exhalation of the subject, the exhalation flowing into the gas passage, the part of the carbon dioxide sensor including a first light-emitting element and a first light-receiving element;
a nasal cannula having a pair of insertion portions which are adapted to be inserted respectively into nostrils of the subject to guide exhalation from the nostrils to the gas passage when the airway adaptor is attached to the face;
a mouth guide adapted to be placed in front of a mouth of the subject to guide exhalation from the mouth to the gas passage when the airway adaptor is attached to the face;
a second light-emitting element supported by one of the pair of insertion portions; and
a second light-receiving element supported by the other of the pair of insertion portions, wherein
when the pair of insertion portions are inserted into the nostrils of the subject, the second light-emitting element and the second light-receiving element are opposed to each other across a nasal septum of the subject, and
the second light-receiving element operates as a part of a temperature sensor for acquiring body temperature of the subject.

2. The airway adaptor according to claim 1 , wherein at least a part of the pair of insertion portions is elastically deformable, the part being to be opposed to the nasal septum.

3. The airway adaptor according to claim 1 , wherein the nasal cannula includes a branch gas passage which is configured to guide a pressure generated by the exhalation from the nostrils to a pressure sensor.

4. A biological information acquiring system comprising:
an airway case which is adapted to be attached to a face of a subject, and which includes a gas passage;
a carbon dioxide sensor which is attached to the airway case, and which is configured to detect a concentration of carbon dioxide contained in exhalation of the subject, the exhalation flowing into the gas passage, the carbon dioxide sensor including a first light-emitting element and a first light-receiving element;
an arterial oxygen saturation sensor which is configured to detect an arterial oxygen saturation of the subject;
a nasal cannula having a pair of insertion portions which are adapted to be inserted respectively into nostrils of the subject to guide exhalation from the nostrils to the gas passage when the airway case is attached to the face;
a mouth guide adapted to be placed in front of a mouth of the subject to guide exhalation from the mouth to the gas passage when the airway case is attached to the face;
a second light-emitting element supported by one of the pair of insertion portions; and
a second light-receiving element supported by the other of the pair of insertion portions, wherein
when the pair of insertion portions are inserted into the nostrils of the subject, the second light-emitting element and the second light-receiving element are opposed to each other across a nasal septum of the subject to operate as a part of the arterial oxygen saturation sensor, and
the second light-receiving element operates as a part of a temperature sensor for acquiring body temperature of the subject.

5. The biological information acquiring system according to claim 4 , wherein at least a part of the pair of insertion portions is an elastically deformable portion, the part being to be opposed to the nasal septum.

6. The biological information acquiring system according to claim 4 , further comprising:
a pressure sensor, wherein
the nasal cannula includes a branch gas passage which is configured to guide a pressure generated by the exhalation from the nostrils to the pressure sensor.

7. A biological information acquiring system comprising:
a pressure sensor;
an arterial oxygen saturation sensor configured to detect an arterial oxygen saturation of a subject;
a nasal cannula having: a pair of insertion portions which are adapted to be inserted respectively into nostrils of the subject; and a gas passage which is configured to guide a pressure generated by exhalation from the nostrils to the pressure sensor, the gas passage communicating with gas passages formed in respective interiors of the pair of insertion portions;
a light-emitting element supported by an interior of one of the pair of insertion portions; and
a light-receiving element supported by an interior of the other of the pair of insertion portions, wherein
when the pair of insertion portions are inserted into the nostrils of the subject, the light-emitting element and the light-receiving element are opposed to each other across a nasal septum of the subject to operate as a part of the arterial oxygen saturation sensor,
at least a part of the pair of insertion portions is formed as an elastically deformable portion, the part being to be opposed to the nasal septum, and
the light-receiving element operates as a part of a temperature sensor for acquiring body temperature of the subject.

8. A biological information acquiring system comprising:
a carbon dioxide sensor configured to detect a concentration of carbon dioxide contained in exhalation of a subject, the carbon dioxide sensor including a first light-emitting element and a first light-receiving element;
an arterial oxygen saturation sensor configured to detect an arterial oxygen saturation of the subject;
a nasal cannula having: a pair of insertion portions which are adapted to be inserted respectively into nostrils of the subject; and a gas passage which is configured to guide a pressure generated by exhalation from the nostrils to the carbon dioxide sensor;
a second light-emitting element supported by an interior of one of the pair of insertion portions; and
a second light-receiving element supported by an interior of the other of the pair of insertion portions, wherein
when the pair of insertion portions are inserted into the nostrils of the subject, the second light-emitting element and the second light-receiving element are opposed to each other across a nasal septum of the subject to operate as a part of the arterial oxygen saturation sensor, and
at least a part of the pair of insertion portions is formed as an elastically deformable portion, the part being to be opposed to the nasal septum, and
the second light-receiving element operates as a part of a temperature sensor for acquiring body temperature of the subject.

Assignees

• Nihon Kohden Corp

Inventors

• Inoue Masayuki
• Ono Yoshinobu

Classifications

• A61M16/0666 Primary

  Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02) · CPC title

• A61B5/682

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

• A61B5/14552

  Details of sensors specially adapted therefor · CPC title

• A61M16/0488

  Mouthpieces; Means for guiding, securing or introducing the tubes (guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02) · CPC title

• A61B5/097

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