Home

Primary Examiner: Michell, Robert W.
Assistant Examiner: Cohen, Lee S.
Attorney: Sjoquist; Paul L.

Next ten patents ordered by date:

Method for measuring externally of the human body magnetic susceptibility changes
Method for aiding diagnostic scanning of the body of a patient
Endoscope with cleaning device
Massaging and relaxing device
Air filtration gas mass
Self-rescue breathing apparatus
Venous pressure indicator
Ostomy gasket
High frequency apparatus for heat treatment of biological tissue
Fluid conveying surgical instrument

Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh

Title: Photoelectric physiological measuring apparatus

Abstract: An apparatus is disclosed which comprises a photoelectric probe for introducing light pulses into a measurement area and for producing a measurement signal representative of the light as modulated in the measurement area, such modulation including modulations characteristic of the circulatory system blood volume variations of the area. Demodulation circuitry is disclosed which demodulates the meaningful from the non-meaningful data of the measurement signal, and utilization devices responsive to various characteristics of the meaningful data are disclosed, which utilization devices include a pulse wave meter, pulse amplitude meter, pulse rate meter, and tissue perfusion meter.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Heule, James E. (Minneapolis, MN, US)

Application Number: 510006
Filing Date: 1974-09-27
Publication_date: 1976-09-14
Assignee: Audronics, Inc. (Minneapolis, MN)
Primary Class(es): 600/479
Other Classes:
US Patent Ref:

3051165	Aug, 1962	Kompelien	128/2.
3139086	Jun, 1964	Botsch et al.	128/2.
3228391	Jan, 1966	Fitter et al.	128/2.
3412729	Nov, 1968	Smit, Jr.	128/2.
3575162	Apr, 1971	Gaarder	128/2.
3628525	Dec, 1971	Polanyi	128/2.
3638640	Feb, 1972	Shaw	128/2.
3704706	Dec, 1972	Herezfeld	128/2.
3776221	Dec, 1973	McIntyre	128/2.
3796213	Mar, 1974	Stephens	128/2.
3815583	Jun, 1974	Scheldt	128/2.
3858574	Jan, 1975	Page	128/2.

Other Refs: 1,962,3351,186,123987,504

Mar, 1972	DT
Apr, 1970	UK
Mar, 1965	UK

Other References: Rentsch, "Thermistor Pulse Transducer", Med. and Biol. Eng., vol. 10, pp. 301-305, Permagon Press, 1972.
Cohen, "Led Skin Reflectance Oximeter", Med. and Biol. Eng., vol. 10, pp. 385-391, 1972.