Medical treatment system
    29.
    发明授权

    公开(公告)号:US11963713B2

    公开(公告)日:2024-04-23

    申请号:US17303590

    申请日:2021-06-02

    申请人: Covidien LP

    IPC分类号: A61B18/14 A61B18/00 A61B18/12

    摘要: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.

    Apparatus and method for fractional treatment of skin tissue of a patient and electrode for use in said apparatus

    公开(公告)号:US11963710B2

    公开(公告)日:2024-04-23

    申请号:US17324989

    申请日:2021-05-19

    申请人: POLLOGEN LTD.

    IPC分类号: A61B18/14 A61B18/00

    摘要: The present disclosure relates to an apparatus (1) for fractional treatment of skin tissue of a patient. The apparatus (1) comprises a handpiece with a housing, at least one first electrode (11) and at least one second electrode (15) located on a distal end of the handpiece and an energy source, which is connected to said at least one first (11) and said at least one second (15) electrode. The apparatus (1) is adapted for applying radio frequency (RF) energy to the tissue. The at least one second electrode (15) is arranged on a base plate (13) and the at least one first electrode (11) is or comprises a pin or a needle (11), in particular a microneedle, which penetrates the base plate (13) through a through hole (17). The apparatus (1) further comprises a vacuum chamber (9) behind the base plate (13) and inside of the housing of the handpiece, which is in fluid communication with the at least one through hole (17) provided in the base plate (13) for exerting attraction onto a surface (33) of the skin tissue towards the at least one first electrode (11) and towards the at least one second electrode (15), when the first electrode (11) and the at least one second electrode (15) is placed in proximity of or is touching the surface (33) of the tissue.