Doppler flow velocity meter

Details Doppler flow velocity meter Doppler flow velocity meter

1991-05-09

1993-02-02

Jaworski, Francis

Surgery

Truss

Pad

A61B 806

Patent

active

051830477

ABSTRACT:
Doppler Flow Velocity Meter for the irradiation of a fluid with pulses of ultrasonic waves which are fed at a predetermined pulse repetition frequency, and for the reception of echo waves reflected by fluid particles and to emit corresponding echo signals; and having receiver connected to an ultrasonic transducer for the reception and processing of echo signals which correspond to at least two different echo waves, which are reflected by the particles in a fixed point of the flow path in response to a first and a second wave pulse emitted, in which the adjacent but separate frequency bands of the echo signal are each processed in a separate signal processing channel;

REFERENCES:
patent: 4966153 (1990-10-01), Nakamura et al.
patent: 4979513 (1990-12-01), Sakai et al.
patent: 5035245 (1991-07-01), Nakamura et al.
patent: 5046500 (1991-09-01), Fehr

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