Diverging signal tandem doppler probe

Details Diverging signal tandem doppler probe Diverging signal tandem doppler probe

1990-02-01

1992-06-09

Jaworski, Francis

Surgery

Truss

Pad

12866205, 12866206, A61B 806

Patent

active

051198215

ABSTRACT:
A dual transducer probe for measuring blood flow by Doppler effect measurement in which quantitative flow data can be compiled and flow constriction points as small as 10% and less can be pinpointed with relative ease. The probe is formed with two transducers, oriented at about 45.degree. from a bottom contacting surface of the probe so that transmission signals diverge at an angle of about 90.degree.. A first transducer directs pulsed sound waves into the direction of blood flow and a second transducer directs pulsed sound waves with the direction of blood flow. The transducers act as receivers for the respective pulses. Fluid velocity can be calculated due to the Doppler effect. By analyzing the signal frequency shifts from the two transistors the blood flow at a very minute region between the transducers, can be determined. Constrictions, corresponding to changes in flow can be pinpointed by moving the probe along the blood vessel.

REFERENCES:
patent: 3631849 (1972-01-01), Norris
patent: 3766517 (1973-10-01), Fahrbach
patent: 3780725 (1973-12-01), Goldberg
patent: 3940731 (1976-02-01), Cooper et al.
patent: 3987673 (1976-10-01), Hansen
patent: 4097835 (1978-06-01), Green
patent: 4237729 (1980-12-01), McLeod et al.
patent: 4259870 (1981-04-01), McLeod et al.
patent: 4407293 (1983-10-01), Suarez, Jr. et al.
patent: 4413629 (1983-11-01), Durley, III
patent: 4459854 (1984-07-01), Richardson et al.
patent: 4492120 (1985-01-01), Lewis et al.
patent: 4541433 (1985-09-01), Baudino
patent: 4605009 (1986-08-01), Pourcelot et al.
patent: 4674336 (1987-06-01), Johnston
patent: 4722347 (1988-02-01), Abrams et al.
patent: 4757821 (1988-07-01), Snyder
patent: 4869260 (1989-09-01), Young et al.
patent: 4947954 (1990-08-01), Rabinovitz et al.
Born, N. et al, "Early and Recent Intra-Luminal Ultrasound Devices", Intnl Jrnl of Caridac Imaging, v. 4:79-88, 1989.

Affiliated with

Also associated with

Rating

Diverging signal tandem doppler probe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diverging signal tandem doppler probe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diverging signal tandem doppler probe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1798168