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    HIGH-FREQUENCY POWER SUPPLY
    1.
    发明公开
    HIGH-FREQUENCY POWER SUPPLY 审中-公开

    公开(公告)号：EP4459860A1

    公开(公告)日：2024-11-06

    申请号：EP22915479.4

    申请日：2022-10-20

    申请人： Kyosan Electric Mfg. Co., Ltd.

    发明人： TEI Unbou

    IPC分类号： H02M9/00 ,  H05H1/46

    摘要： A high-frequency power supply (10) uses one pulse conversion/variable gain amplification unit (23) to perform two processing steps which are converting an RF signal into pulses and controlling an output level, and uses one control signal (27) to perform the pulse conversion and the output level control by the pulse conversion/variable gain amplification unit (23), thereby obviating the need for a modulation unit, which is a factor in the generation of jitter, overshoot, and undershoot, and reducing the number of control lines (29) for sending the control signal (27) to one control line. Due to this configuration, the jitter, overshoot, and undershoot generated in an RF pulse signal can be prevented, and the RF-signal pulse conversion and output level control are performed simultaneously using one control line (29).

    ELECTRODE FOR A CONSUMABLE CARTRIDGE OF A PLASMA ARC TORCH
    2.
    发明公开
    ELECTRODE FOR A CONSUMABLE CARTRIDGE OF A PLASMA ARC TORCH 审中-公开

    公开(公告)号：EP4412401A3

    公开(公告)日：2024-11-06

    申请号：EP24183242.7

    申请日：2022-05-11

    申请人： Hypertherm, Inc.

    发明人： Peters, John ,  Currier, Brian J.

    IPC分类号： H05H1/28 ,  H05H1/34

    摘要： An electrode for a consumable cartridge of a plasma arc torch is provided. The electrode comprises a substantially hollow body defining a proximal end, a distal end and a longitudinal axis extending therebetween. The electrode also includes a plurality of flanges, including a proximal flange and a distal flange, disposed circumferentially about an external surface of the hollow body and extending radially outward. Each flange defines one or more holes configured to conduct a gas flow therethrough along the external surface of the hollow body. The one or more holes on the proximal flange define a first combined cross-sectional flow area that is different from a second combined cross-sectional flow area defined by the one or more holes on the distal flange.

    PLASMA GENERATING SYSTEM
    6.
    发明公开
    PLASMA GENERATING SYSTEM 审中-公开

    公开(公告)号：EP4447088A1

    公开(公告)日：2024-10-16

    申请号：EP24167544.6

    申请日：2024-03-28

    申请人： CAPS MEDICAL LTD.

    发明人： YANOVITZ, Leonid ,  UCHITEL, Ilan Oleg ,  KOGAN, Boris

    IPC分类号： H01J37/32 ,  H05H1/46 ,  A61B18/04

    摘要： Power circuitry for cold plasma generation; optionally plasma for therapeutic use. Cold plasma generation occurs at the distal end of a catheter-like device which is flexible, narrow (e.g., less than 5 mm in diameter), and longitudinally extended to reach, e.g., 50-100 cm into body cavities. A cable used for power transmission is a part of the power generating circuit, its intrinsic impedance being a major contributor to and constraint on the time constant of an entraining RC circuit whose resonant frequency entrains the frequency of power generation. In some embodiments, inductive transformer coupling to the entraining/transmission line circuit is used to generate voltage gain. In some embodiments, transformer coupling is divided into a plurality of stages. This potentially enables practically achieving high transmission frequencies with higher gain, lowered sensitivity to variability in distal portions of the entraining RC circuit, and/or longer transmission lines compared to a single-stage transformer configuration.