Ultrasonic transducer devices

Details Ultrasonic transducer devices Ultrasonic transducer devices

1975-01-03

1976-10-26

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

System

128 205F, G01F 166, A61B 502

Patent

active

039876730

ABSTRACT:
A flowmeter for measuring blood flow in a vascular channel by Doppler Techniques has an assembly of electro-ultrasonic transducers which direct ultrasonic radiation to a zone spaced from the assembly and receive radiation reflected therefrom. The transducers are spaced apart and capable of providing two radiation beam paths from transmitting to receiving transducers after reflection from the zone. The transducers are directed such that part of one of the beam paths forms an acute angle with the direction of blood flow and part of the other beam path forms an obtuse angle with the direction of blood flow. The reflected signals are shifted in frequency by Doppler effect and their instantaneous difference frequency is monitored and expressed directly in terms of velocity.

REFERENCES:
patent: 3498290 (1970-03-01), Shaw et al.
patent: 3710792 (1973-01-01), Light
patent: 3712119 (1973-01-01), Cross et al.
patent: 3766517 (1973-10-01), Fahrbach
patent: 3889533 (1975-06-01), Balser

Affiliated with

Also associated with

Rating

Ultrasonic transducer devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrasonic transducer devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic transducer devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-178531