[특허]Peripheral blood flow evaluating apparatus

Peripheral blood flow evaluating apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-005/00
출원번호	US-0218811 (1994-03-28)
발명자 / 주소	Takatani Setsuo (Houston TX) Sakai Hiroshi (Komaki JPX)
출원인 / 주소	Colin Corporation (Aichi JPX 03)
인용정보	피인용 횟수 : 64 인용 특허 : 0

초록 ▼

An apparatus for evaluating a peripheral blood flow of a living subject, including a reflection-type pulse wave detecting device including two pairs of light-emitting and light-receiving elements provided such that a distance between the light-emitting and light-receiving elements of one pair is different from that of the other pair; and a determining device for determining an attenuation coefficient of the light beam emitted by the light-emitting element of each pair, based on (a) an intensity of the light beam which is emitted by the light-emitting element of each pair and (b) an intensity of the light which has been emitted from the light-emitting element of each pair, reflected from skin of the subject, and subsequently received by the light-receiving element of each pair. The apparatus further includes an evaluating device for evaluating peripheral blood flow of the subject, based on a ratio of the attenuation coefficient of the light beam emitted by the light-emitting element of one pair to the attenuation coefficient of the light beam emitted by the light-emitting element of the other pair, and/or, a display which displays a change of the ratio of the attenuation coefficient of the light beam emitted by the light-emitting element of one pair to the attenuation coefficient of the light beam emitted by the light-emitting element of the other pair.

대표청구항 ▼

An apparatus for evaluating a peripheral blood flow of a living subject, comprising: a reflection-type pulse detecting device including at least two pairs of light-emitting and light-receiving means provided such that a distance between the light-emitting and light-receiving means of one of said at least two pairs is different from a distance between the light-emitting and light-receiving means of the other, or each of the others, of said at least two pairs, said at least two pairs of light-emitting and light-receiving means being adapted to be opposed to a skin of said subject, the light-emitting means of each one of said at least two pairs emitting a light beam having a wavelength equal to a wavelength of a light beam emitted by the light-emitting means of the other, or each of the others, of said at least two pairs toward said skin so that the light-receiving means of said each pair receives the light which has been emitted from said light-emitting means of said each pair and subsequently reflected from said skin, and generates a reflected-light signal representing the reflected light received from said skin and containing a pulse wave signal resulting from flowing of blood in said skin; attenuation-coefficient determining means for determining an attenuation coefficient of the light beam emitted by said light-emitting means of said each pair, based on (a) an intensity of the light beam which is emitted by said light-emitting means of said each pair and (b) an intensity of the light beam which has been emitted from said light-emitting means of said each pair, reflected from said skin of said subject, and subsequently received by said light-receiving means of said each pair; and peripheral-blood-flow evaluating means for evaluating said peripheral blood flow of said subject, based on a ratio of the attenuation coefficient of the light beam emitted by the light-emitting means of one of said at least two pairs, to the attenuation coefficient of the light beam emitted by the light-emitting means of the other or another of said at least two pairs.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Peripheral blood flow evaluating apparatus 원문보기

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