Method of manufacture of probe tip ultrasonic transducer

Details Method of manufacture of probe tip ultrasonic transducer Method of manufacture of probe tip ultrasonic transducer

1991-09-19

1993-07-20

Hall, Carl E.

Metal working

Piezoelectric device making

427100, H01L 4122

Patent

active

052281760

ABSTRACT:
An improved ultrasonic transducer for a catheter tip has a thin strip of piezoelectric polymer film formed into a spiral ring and adhesively mounted on the support structure near the catheter tip. Electrical connection between the back face of the film and the support structure negative electrode is via capacitive coupling. Connection to the front face of the film is via a wire connected to the positive electrode of the catheter. A further embodiment suitable for a needle transducer is formed by coating the tip with a solution of PVDF co-polymer to form the actual transducer.

REFERENCES:
patent: 4784915 (1988-11-01), Sakagami et al.
patent: 4951370 (1990-08-01), Reid
patent: 5002058 (1991-03-01), Martinelli

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