Airway adaptor and biological information acquiring system

• US 9,393,376 B2
• Filed: 02/15/2013
• Issued: 07/19/2016
• Est. Priority Date: 03/05/2012
• Status: Active Grant

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: Inoue, Masayuki, Ono, Yoshinobu
• Primary Examiner(s): MARMOR II, CHARLES ALAN
• Assistant Examiner(s): Cox, Thaddeus
• Application Number:
  US13/768,514
• Publication Number:
  US 20130231540A1
• Time in Patent Office: 1,250 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• 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 5/083 Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6819 Nose
• CPC Class Codes: A61B 5/682 Mouth, e.g., oral cavity; tongue; Lips; Teeth
• CPC Class Codes: A61M 16/0488 Mouthpieces; Means for guiding, securing or introducing the tubes guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02
• CPC Class Codes: A61M 16/0666 Nasal cannulas or tubing devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)

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.

Claims

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.