| US 7,462,154 B2 | ||
| Sensor for measuring carbon dioxide in respiratory gas | ||
| Shinji Yamamori, Tokyo (Japan); Yoshinobu Ono, Tokyo (Japan); Takeshi Kojima, Tokyo (Japan); and Noriaki Todokoro, Tokyo (Japan) | ||
| Assigned to Nihon Kohden Corporation, Tokyo (Japan) | ||
| Filed on Mar. 08, 2002, as Appl. No. 10/92,591. | ||
| Claims priority of application No. P2001-064901 (JP), filed on Mar. 08, 2001; application No. P2001-107179 (JP), filed on Apr. 05, 2001; and application No. P2002-046480 (JP), filed on Feb. 22, 2002. | ||
| Prior Publication US 2002/0122746 A1, Sep. 05, 2002 | ||
| Int. Cl. G01N 21/00 (2006.01); G01N 7/00 (2006.01); G01N 27/00 (2006.01); G01N 31/00 (2006.01); G01N 33/00 (2006.01); G01N 1/22 (2006.01); G01N 37/00 (2006.01); G01N 35/00 (2006.01); A61L 9/00 (2006.01); B01J 7/00 (2006.01); A61M 16/00 (2006.01); A62B 7/00 (2006.01); A62B 18/02 (2006.01); F16K 31/02 (2006.01) | ||
| U.S. Cl. 600—532 [422/83; 422/84; 422/82.05; 422/305; 73/1.05; 128/204.22; 128/204.23; 128/205.25] | 21 Claims |
| 1. A sensor adapted to measure the concentration or presence/absence of carbon dioxide in respiratory gas from a living body,
comprising:
a light-emitting light element operable to emit light;
a light-receiving element adapted to receive the light emitted from the light-receiving element;
a support member supporting the light-emitting element and the light-receiving element such that they are opposed to each
other on a single optical axis, the support member having a size adapted to contact a part between nostrils and a mouth of
the living body;
a respiratory flow path formed in the support member so as to cross over the optical axis and adapted to allow the respiratory
gas to pass therethrough when the support member is located between the nostrils and the mouth; and
ear straps adapted to be hooked around ears of the living body for holding the supporting member below the nostrils.
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