-
公开(公告)号:US12263122B2
公开(公告)日:2025-04-01
申请号:US18181267
申请日:2023-03-09
Applicant: Alcon Inc.
Inventor: Daryush Agahi , Jiansheng Zhou
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.
-
公开(公告)号:US11642243B2
公开(公告)日:2023-05-09
申请号:US16661157
申请日:2019-10-23
Applicant: Alcon Inc.
Inventor: Daryush Agahi , Jiansheng Zhou
CPC classification number: A61F9/00763 , F16K31/0603 , F16K37/0041 , G05D7/0623 , G05D7/0635 , H01F7/064 , H01F7/16 , A61B2017/0019 , A61B2017/00544
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.
-
公开(公告)号:US20220381369A1
公开(公告)日:2022-12-01
申请号:US17816798
申请日:2022-08-02
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou , Craig Fritch
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.
-
公开(公告)号:US20200340600A1
公开(公告)日:2020-10-29
申请号:US16844145
申请日:2020-04-09
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou , Craig Fritch
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.
-
公开(公告)号:US11441700B2
公开(公告)日:2022-09-13
申请号:US16844145
申请日:2020-04-09
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou , Craig Fritch
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.
-
公开(公告)号:US20200179169A1
公开(公告)日:2020-06-11
申请号:US16661157
申请日:2019-10-23
Applicant: Alcon Inc.
Inventor: Daryush Agahi , Jiansheng Zhou
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.
-
公开(公告)号:US11796084B2
公开(公告)日:2023-10-24
申请号:US17816798
申请日:2022-08-02
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou , Craig Fritch
CPC classification number: F16K49/00 , A61F9/00736 , F16K27/12 , F16K47/02 , A61B2017/00544 , G05D16/2024
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.
-
公开(公告)号:US11540942B2
公开(公告)日:2023-01-03
申请号:US16511950
申请日:2019-07-15
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou
Abstract: Systems, methods, and computer-readable media for enhancing the reliability of a pneumatically driven surgical tool by providing a redundant, backup pneumatic circuit for supplying the surgical tool with pneumatic pressure at a normal pressure.
-
公开(公告)号:US20210213183A1
公开(公告)日:2021-07-15
申请号:US17146665
申请日:2021-01-12
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou
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.
-
公开(公告)号:US20210173191A1
公开(公告)日:2021-06-10
申请号:US17181341
申请日:2021-02-22
Applicant: Alcon Inc.
Inventor: Jiansheng Zhou
IPC: G02B21/24 , G02B27/64 , G01P15/18 , G02B21/00 , A61B90/20 , G01P13/00 , A61B3/13 , G02B7/00 , A61B34/20
Abstract: The present disclosure provides a system for active vibration reduction of a surgical microscope. The system includes a surgical microscope with an optical head connected to a control device that adjusts the position of the optical head in any of the X, Y, and Z-directions. The system also includes a processor and an accelerometer that detects motion of the optical head and generates data relating to the motion. The disclosure also provides a method for active vibration reduction, which includes receiving data relating to motion of an optical head of a surgical microscope, determining whether the motion is a vibration event or an intentional movement, determining a distance and direction the optical head must be adjusted to reduce the vibration caused by the motion detected, and generating and transmitting a control signal to adjust the position of the optical head to reduce the vibration of the vibration event.
-
-
-
-
-
-
-
-
-