1987-07-16
1989-04-18
Jaworski, Francis
Surgery
Truss
Pad
128687, A61B 502
Patent
active
048217344
ABSTRACT:
A non-invasive manometer comprises a bladder to be attached to an appendage such as a finger, a leg, a tail or the like in order to apply a pressure thereto. A pressure changing device changes the pressure. Two pairs of photoelectric sensors sense a change in the diameter of the blood vessel due to the applied pressure and the internal pressure of the blood vessel. Each sensor includes a light emitting unit and a photosensitive unit. At least one of the units includes a plurality of elements. The photoelectric sensors are shielded from possible external light and operated alternately in a time-divisional manner. One sensor is disposed closer to the heart than the other sensor. The output of the other sensor is used to determine the highest blood pressure while the outputs of both the sensors are compared to determine the lowest blood pressure.
REFERENCES:
patent: 3104661 (1963-09-01), Halpern
patent: 3920004 (1975-11-01), Nakayama
patent: 4172450 (1979-10-01), Rogers et al.
patent: 4245648 (1981-01-01), Trimmer et al.
patent: 4406289 (1983-09-01), Wessiling et al.
patent: 4407290 (1983-10-01), Wilber
patent: 4437470 (1984-03-01), Prost
patent: 4566463 (1986-01-01), Taniguchi et al.
patent: 4597393 (1986-07-01), Yamakoshi et al.
Jaworski Francis
Nihon Seimitsu Sokki Co., Ltd.
LandOfFree
Sphygmomanometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sphygmomanometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sphygmomanometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2390607