Ultrasonic doppler blood flow meter apparatus

Details Ultrasonic doppler blood flow meter apparatus Ultrasonic doppler blood flow meter apparatus

1994-02-28

1995-05-30

Manuel, George

Surgery

Truss

Pad

A61B 800

Patent

active

054193338

ABSTRACT:
An ultrasonic Doppler blood flow meter apparatus includes a wall filter for eliminating clutter from an echo signal of an ultrasonic pulse signal sent to a living being under test. The wall filter includes a switch for cutting a part of input data and a control unit for controlling the switch such that the switch is opened during a period in which first m data (where m is integer) is inputted to undergo filtering by the wall filter while the switch is closed during a period in which data following the (m+1)-th data inclusive thereof are inputted.

REFERENCES:
patent: 5152292 (1992-10-01), Karp
patent: 5163434 (1992-11-01), Kumazawa
patent: 5211169 (1993-05-01), Freeland

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