Transducer apparatus and method for intravascular blood flow...

Details Transducer apparatus and method for intravascular blood flow... Transducer apparatus and method for intravascular blood flow...

2007-11-20

2011-11-08

Casler, Brian (Department: 3737)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S407000, C600S437000, C600S459000, C600S454000, C600S438000

Reexamination Certificate

active

08052608

ABSTRACT:
Transducers to measure fluid flow using Doppler ultrasound that are suitable for integrating into or connecting to intravascular devices are disclosed. These transducers meet the requirement for long, thin, flexible transducers, and consist of one or more diffraction-grating transducers, with or without non-diffraction-grating transducers. An exemplary configuration of the transducers utilizes the diffraction caused by narrow transducers to produce beam overlap for Doppler detection of moving blood, and stripline transmission lines are used to bring energy to and receive energy from the transducers and may carry the disclosed transducer configurations as well as carry signals into and out of the blood vessels.

REFERENCES:
patent: 5488953 (1996-02-01), Vilkomerson
patent: 5807258 (1998-09-01), Cimochowski et al.
patent: 2005/0070799 (2005-03-01), Vilkomerson et al.
Evans et al, Doppler Ultrasound, John Wiley & Sons, (2000).

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