Original document(32 pages)  中文版
    Partial or total occlusions of fluid passages within the human body are removed by positioning an array of optical fibers in the passage and directing treatment radiation pulses along the fibers, one at a time, to generate a shock wave and hydrodynamic flows that strike and emulsify the occlusions. A preferred application is the removal of blood clots (thrombi and emboli) from small cerebral vessels to reverse the effects of an ischemic stroke. The operating parameters and techniques are chosen to minimize the amount of heating of the fragile cerebral vessel walls occurring during this photoacoustic treatment. One such technique is the optical monitoring of the existence of hydrodynamic flow generating vapor bubbles when they are expected to occur and stopping the heat generating pulses propagated along an optical fiber that is not generating such bubbles.
Application Number
98812224 Application Date
Title 名称 Photoacoustic removal for occlusions from blood vessels
Publication Number
1282230 Publication Date
Approval Pub. Date Granted Pub. Date
International Classification 分类号 A61B18/22;A61B18/26
Applicant(s) Name
The Regents of University of California
Address 地址
Inventor(s) Name 发明人 Steven R. Visuri;Luiz B. Da Silva;Peter M. Celliers
Attorney & Agent 代理人 huang xiaolin

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