| US 7,572,227 B2 | ||
| Blood pressure measuring apparatus | ||
| Akira Kondo, Fujinomiya (Japan); Takashi Watanabe, Fujinomiya (Japan); Masaru Nakanishi, Fujinomiya (Japan); Shuichi Oonishi, Fujinomiya (Japan); Hitoshi Ozawa, Fujinomiya (Japan); Koichiro Asama, Kanagawa-ken (Japan); and Shinji Mino, Atsugi (Japan) | ||
| Assigned to Terumo Kabushiki Kaisha, Shibuya-ku, Tokyo (Japan); and Nippon Telegraph and Telephone Corporation, Chiyoda-ku, Tokyo (Japan) | ||
| Filed on Sep. 20, 2007, as Appl. No. 11/902,350. | ||
| Application 11/902350 is a continuation of application No. PCT/JP2006/305953, filed on Mar. 24, 2006. | ||
| Claims priority of application No. 2005-112578 (JP), filed on Apr. 08, 2005. | ||
| Prior Publication US 2008/0091112 A1, Apr. 17, 2008 | ||
| Int. Cl. A61B 5/02 (2006.01) | ||
| U.S. Cl. 600—485 [600/490; 600/500] | 16 Claims |
| 1. A blood pressure measuring apparatus comprising:
an inner cuff to be inserted into an ear hole, and an outer cuff to be positioned outside a tragus;
holding means for holding said inner cuff and said outer cuff;
pulse wave detecting means incorporated into at least one of said inner cuff and said outer cuff to detect a pulse wave signal
obtained by light from blood flowing through a blood vessel;
pressurizing/depressurizing means for pressurizing and depressurizing said inner cuff and said outer cuff by using a fluid,
after said inner cuff and said outer cuff clamp the tragus;
a tube connected from said inner cuff and said outer cuff to said pressurizing/depressurizing means to supply the fluid;
pressure detecting means connected to said tube to detect pressures of said inner cuff and said outer cuff; and
blood pressure measurement control means for measuring a blood pressure value from the pulse wave signal,
wherein said inner cuff and said outer cuff oppose each other, and a thickness of a lid portion of each of said inner cuff
and said outer cuff is made larger than a thickness of a cylindrical portion.
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