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    METHODS OF SOLENOID VALVE CONTROL OPTIMIZATION
    23.
    发明专利
    METHODS OF SOLENOID VALVE CONTROL OPTIMIZATION 未知

    公开(公告)号：CA3117863A1

    公开(公告)日：2020-06-18

    申请号：CA3117863

    申请日：2019-11-15

    Applicant: ALCON INC

    Inventor： ZHOU JIANSHENG ,  AGAHI DARYUSH

    IPC: A61F9/007

    Abstract: Systems and methods for optimizing the application of pulse width modulation (PWM) in a voltage signal for delivering a current in a valve used to alternatively deliver pressurized gas to and vent from chambers in a vitrectomy probe used to drive a cutter.

    Vacuum oscillation prevention in a venturi surgical system
    28.
    发明专利
    Vacuum oscillation prevention in a venturi surgical system 未知

    公开(公告)号：AU2021207362A1

    公开(公告)日：2022-06-23

    申请号：AU2021207362

    申请日：2021-01-12

    Applicant: ALCON INC

    Inventor： ZHOU JIANSHENG

    IPC: A61F9/007 ,  G05B11/42 ,  G05D16/00

    Abstract: Control methods for generating a venturi vacuum in a substantially oscillation-free manner for a surgical system. The control methods generally include utilizing real-time readings from a venturi vacuum generator inlet pressure transducer and a vacuum pressure transducer on the vacuum side of the venturi vacuum generator. These values may be employed in real-time to ascertain the emergence of an oscillation region on the vacuum side which may then be addressed by way of a bleed control proportional valve. When employed in combination with a throttle control proportional valve at the inlet side of the venturi vacuum generator, pressures may be manipulated in light of one another and/or individually as directed through a central controller. Thus, the presentation of oscillations on the vacuum side may be avoided to provide for a more stable vacuum supported surgical procedure.

    VALVE COOLING AND NOISE SUPPRESSION
    29.
    发明专利
    VALVE COOLING AND NOISE SUPPRESSION 未知

    公开(公告)号：CA3131494A1

    公开(公告)日：2020-10-29

    申请号：CA3131494

    申请日：2020-04-09

    Applicant: ALCON INC

    Inventor： ZHOU JIANSHENG ,  FRITCH CRAIG

    IPC: A61F9/007

    Abstract: Certain embodiments provide a cover mounted on top of a manifold, the cover comprising an exhaust opening and an inner surface forming a space between the inner surface of the cover and an outer surface of the manifold, wherein the space is configured to receive pressurized gas at an inlet positioned on a first side of a valve. The valve is coupled to the outer surface of the manifold and positioned within the space. The exhaust opening is positioned on a second side of the valve opposite the first side of the valve such that pressurized gas circulates from the inlet around the valve and exits through the exhaust opening.

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