Histotripsy using very short ultrasound pulses

    公开(公告)号:US11819712B2

    公开(公告)日:2023-11-21

    申请号:US17008369

    申请日:2020-08-31

    IPC分类号: A61N7/00 A61B17/32

    摘要: Apparatus and methods are provided for applying ultrasound pulses into tissue or a medium in which the peak negative pressure (P−) of one or more negative half cycle(s) of the ultrasound pulses exceed(s) an intrinsic threshold of the tissue or medium, to directly form a dense bubble cloud in the tissue or medium without shock-scattering. In one embodiment, a microtripsy method of Histotripsy therapy comprises delivering an ultrasound pulse from an ultrasound therapy transducer into tissue, the ultrasound pulse having at least a portion of a peak negative pressure half-cycle that exceeds an intrinsic threshold in the tissue to produce a bubble cloud of at least one bubble in the tissue, and generating a lesion in the tissue with the bubble cloud. The intrinsic threshold can vary depending on the type of tissue to be treated. In some embodiments, the intrinsic threshold in tissue can range from 15-30 MPa.

    ALDH1 ANTIGEN-PULSED DENDRITIC CELLS
    79.
    发明公开

    公开(公告)号:US20230338492A1

    公开(公告)日:2023-10-26

    申请号:US18318912

    申请日:2023-05-17

    发明人: Qiao Li

    摘要: The present invention relates to compositions, systems, kits, and methods for generating and using ALDH1 antigen-pulsed dendritic cells (DCs). In certain embodiments, initial DCs are pulsed in vitro with a composition comprising ALDH1A1 and/or ALDH1A3 immunogenic peptide(s) to generate ALDH1 antigen-pulsed DCs, wherein the composition is free of tumor cells, cell lysates, and full-length ALDH1 proteins. In some embodiments, the ALDH1 antigen-pulsed DCs are administered to a subject in order to at least partially treat cancer (e.g., to kill at least some cancer stem cells in the subject).