Invention Grant
- Patent Title: Method for controlling histotripsy using confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses
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Application No.: US16423004Application Date: 2019-05-25
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Publication No.: US10772646B2Publication Date: 2020-09-15
- Inventor: Mingzhu Lu , Yizhe Geng , Ruixin Li , Xuan Wang , Yanshan Liu , Dan Han , Yehui Liu , Yujiao Li , Rui Wang , Mingxi Wan
- Applicant: Xi'an Jiaotong University
- Applicant Address: CN Xi'an
- Assignee: Xi'an Jiaotong University
- Current Assignee: Xi'an Jiaotong University
- Current Assignee Address: CN Xi'an
- Agency: Wayne & Ken, LLC
- Agent Tony Hom
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@34b05080
- Main IPC: A61B17/22
- IPC: A61B17/22 ; A61N7/00 ; A61B17/00

Abstract:
A method for controlling a histotripsy using a confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses, including: 1) positioning a target tissue by a monitoring and guiding system and adjusting a position of the target tissue to a focal point of a transducer; 2) first stage: controlling the confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses to form a shock wave in a focal zone; wherein a negative acoustic pressure exceeds a cavitation threshold; an inertial cavitation occurs to generate boiling bubbles; the boiling bubbles collapse and achieve partial homogenization of the target tissue; 3) second stage: controlling the confocal fundamental and harmonic superposition combined with hundred-microsecond pulsed-ultrasound sequences to simultaneously irradiate a target zone and further mechanically disintegrate and homogenize the target tissue.
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