Ultrasonic transducer
US5002058A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Apr 18, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/2063
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A miniature transducer designed for use in a medical imaging system catheter probe is disclosed. The transducer has an electric cavity and coaxial construction for preventing electric fields from being emitted or received by the transducers. The construction of the transducer enables two to be mounted very close to one another on a thin catheter probe, one for transmitting acoustic pulses and the other for sensing echoes in response to the acoustic pulses, for imaging extremely close targets. The transducers can be secured to the catheter probe in such a way as to substantially acoustically isolate one from the other. A method of making the transducer by applying several electrically-conductive and insulating coatings and layers to a core in selected sequence so as to create a transducer having an electrical cavity, coaxial construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.