Method of manufacture of probe tip ultrasonic transducer
US5228176A · kind A · utility
19Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Sep 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.