Surgery – Truss – Pad
Patent
1982-10-29
1985-08-13
Howell, Kyle L.
Surgery
Truss
Pad
A61B 502
Patent
active
045343616
ABSTRACT:
To improve the accuracy of blood pressure measurement by utilizing the Korotkoff noises, the frequency spectrum of the Korotkoff noises is analyzed, either by a plurality of filters (16, 17, 18; FIG. 1) or by a Fast Fourier Transform (FFT) system (54, 55; FIG. 2). If a plurality of filters are used (FIG. 1), which may be analog or digital, then the output amplitudes are rectified (19, 20, 21) and quotients are formed. If the quotients have a predetermined relationship, as determined by a discriminator (27, 28), a control logic provides output signals to a manometer (31) to indicate, respectively, systolic and diastolic blood pressure. For Fast Fourier Transform, a microprocessor can be used which, simultaneously, can provide clock sources to digitize output from the microphone coupled to the cuff of the blood pressure measuring instrument.
REFERENCES:
patent: 3308811 (1967-03-01), Gillette et al.
patent: 3633568 (1969-09-01), Hobel
patent: 3814083 (1974-06-01), Fletcher et al.
patent: 4026277 (1977-05-01), Toda et al.
patent: 4112929 (1978-09-01), Affeldt et al.
Golden, D. et al. "Development of a Korotkoff Sound Processor for Automatic Identification of Auscultatory Events-part 1: Specification of Preprocessing BP Filters", IEEE Trans. on Biomed. Engrg., vol. BME-21, No. 2, pp. 114-118, Mar. 1974.
Wolthius, R. et al., "Development of Korotkoff Sound Processor for Automatic Identification of Auscultatory Events part 2: Decision Logic Specifications and Operational Verification", IEEE Trans. on Biomed. Engrg., vol. BME-21, No. 2, pp. 119-124, Mar. 1974.
Schulze, A. et al., "A System for the Automatic Measurement and Digital Display of Systolic & Distolic BPs", Southwestern IEEE Conference Records, Apr. 1968, pp. 17F1-17F5.
Graham, M., "Series I Made Medical Transducers, UP's Monitor EKG and BP", Electronic Design 19, Sep. 13, 1976.
Affeldt Karl-Heinz
Berger Klaus
Bottcher Lutz
Howell Kyle L.
Jaworski Francis J.
Robert & Bosch GmbH
LandOfFree
Method and apparatus for measuring blood pressure by instantaneo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring blood pressure by instantaneo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring blood pressure by instantaneo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2313482