Focused ultrasound split-foci control using spherical-confocal-split array with dual frequency of fundamental and harmonic superimposition
US10596395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2015 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Feb 5, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2007/0082
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spherical-confocal-split array with dual frequency of fundamental and harmonic superimposition includes: array elements which are spherically confocal, whose quantity is an even number, wherein a half of the array elements operate with a lower frequency, and the other half of the array elements operate with a higher frequency; both the lower frequency and the higher frequency are MHz high-frequencies; each of the array elements corresponds to a frequency drive; array element beams don't superimpose outside the focal region; each of the array elements is connected to a channel amplifier (3) through corresponding impedance matching (2); and a multi-channel waveform controller (4) is connected to the channel amplifier (3) for controlling amplitudes and phases of all channels. The dual-frequency spherical sectorial split array is able to generate split multi-foci of the focal plane with the dual frequencies; and control strong interference of transient cavitation clouds at the adjacent foci.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.