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Probe tip ultrasonic transducers and method of manufacture
   
Document Number
US Patent 4911172
Issued Date
March 27, 1990
Link
Inventors
Bui; Tuan (Lane Cove,AU)
Nasr; Saad (Brighton Lesands,AU)
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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.
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Probe tip ultrasonic transducers and method of manufacture - US Patent 4911172 Drawing
Drawing from US Patent 4911172
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Number of Claims:
5
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Owner
Published
March 27, 1990
Application Number
07/174,740
Filed
March 28, 1988
US Classification
600/466   600/461
Int'l Classification
A61B   8/12   (20060101)   B06B   1/06   (20060101)   A61B   19/00   (20060101)  
Attorney/Law Firm
USPTO Field of Search
128/662.05   128/662.06   73/622   73/623  
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Claims
Description
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