Technique and apparatus for ultrasound therapy
US6589174B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jun 28, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2007/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to an imaging-compatible device for insertion into a region of tissue under image guidance, which employs ultrasound energy for the generation of thermal lesions. Coagulation can be confined to particular sectors in tissue through rotational control of the device. The depth of coagulation can be controlled through simultaneous modulation of the operating frequencies and powers. Described is a device which comprises a transducer located within a housing suitable for tissue insertion. The transducer comprises at least one piezoceramic element with at least one acoustic matching layer comprising a high acoustic impedance material for generating acoustic energy in narrow passbands around multiple resonant frequencies with high acoustic efficiency. The magnitude and frequency of the electrical power delivered to each element can be manipulated simultaneously providing control over the 3-dimensional shape of the thermal lesion created in tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.