Ultrasonic transducer
US3958559A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/905
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
For use in ultrasound pulse-echo imaging and neurosurgery systems, a plano-concave lens of elliptical shape is positioned in front of a transducer for producing an extremely narrow ultrasonic beam, and at the same time provides a large aperture to maximize the ultrasound power output from the transducer and the capture angle of reflected echoes. The lens is preferably formed of plastic, selected from a wide variety of available plastics in accordance with desired acoustical properties for a given application, and is preferably bonded to a flat, disc-shaped transducer. By proper selection of the material used to construct the lens it is possible to produce the correct amount of transducer apodization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.