Probe tip ultrasonic transducers and method of manufacture

Details Probe tip ultrasonic transducers and method of manufacture Probe tip ultrasonic transducers and method of manufacture

1988-03-28

1990-03-27

Jaworski, Francis

Surgery

Truss

Pad

12866205, A61B 812

Patent

active

049111728

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: 3938502 (1976-02-01), Bonn
patent: 4407294 (1983-10-01), Vilkomerson
patent: 4582067 (1986-04-01), Silverstein et al.
patent: 4697595 (1987-10-01), Breyer et al.
patent: 4794931 (1989-01-01), Yoak

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