Apparatus for the treatment of biological tissue and corporal concretions
US5795311A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Jun 17, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is an apparatus for the treatment of biological tissue as well as for destroying concretions by means of focussed acoustic waves, having PA1 a sound generating unit which a control unit triggers in such a manner that the unit generates acoustic waves of a specific frequency and energy, and PA1 a focussing unit which focusses the generated waves in a focal area. The present invention is distinguished by the sound generating unit (2) being provided, in an as such known manner, with a plane or only slightly curved radiation area in such a manner that the generated wave is an essentially plane wave and that the focussing unit (5) disposed in a fixed spatial relationship to the sound generating unit being provided with a Fresnel lenslike structure on the sound entry and/or sound exit area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.