Patents by Inventor Pu Zhou

Pu Zhou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220379094
    Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
    Type: Application
    Filed: August 8, 2022
    Publication date: December 1, 2022
    Applicant: Edwards Lifesciences Corporation
    Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana Kiran Gowdar, Yong Gao, David Delon Williams
  • Publication number: 20220356888
    Abstract: A pump front chamber automatic compensation device for improving closed impeller backflow is provided. The automatic compensation device is mounted on the inner wall surface of the pump body front chamber, extending from the inner wall surface of the pump body front chamber to the impeller front cover plate, stopping the flow of fluid from the impeller outlet to the pump front chamber. The automatic compensation device includes a spacer plate and a compensation feedback device. One end of the spacer plate extends into the pump front chamber, and the other end is connected to the automatic compensation assembly, through which the length of the spacer extension is automatically compensated. The pump front chamber automatic compensation device can prevent the fluid flowing out of the impeller outlet from entering the front chamber of the centrifugal pump, thus improving the operating efficiency and stability of the centrifugal pump.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 10, 2022
    Applicant: JIANGSU UNIVERSITY
    Inventors: Wei LI, Lei WANG, Ling ZHOU, Yong ZHU, Hao CHANG, Qi CHEN, Pu WU
  • Publication number: 20220345650
    Abstract: A method of removing fixed pattern noise, comprising: S01: performing a single-frame segmented exposure on a pixel array; S02: reading a signal of the pixel array, comprising: S021: performing a soft reset, so as to set the reset signal of the pixel unit to an intermediate voltage, and reading a differential reset signal; S022: performing a hard reset so as to set the reset signal of the pixel unit to a high voltage; S023: turning on a transmission MOS transistor to enable an exposure signal of the photodiode to be transmitted to the floating diffusion area, and reading a differential pixel transmission signal; S03: subtracting the differential reset signal from the differential pixel transmission signal to obtain an exposure signal with fixed pattern noise removed. Another method of removing fixed pattern noise and an image sensor are further provided.
    Type: Application
    Filed: July 23, 2020
    Publication date: October 27, 2022
    Inventors: Xi ZENG, Pu ZHOU, Huijie YAN, Ying LUO, Xuehong HE, Yuan ZHANG, Hailing YANG, Xiameng LIAN
  • Patent number: 11458771
    Abstract: A vacuum cleaner can include an upright section, a surface cleaning head coupled to the upright section, and at least one wheel coupled to the surface cleaning head. The at least one wheel can include a hub, a rim, and an absorber. The absorber can extend between the hub and the rim. The absorber can be configured to deform before the rim experiences substantial deformation. A deformation limiter can be provided that is configured to limit the deformation in the absorber.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 4, 2022
    Assignee: SharkNinja Operating LLC
    Inventors: Jason B. Thorne, Pu Zhou, Ming Yao, Gordon Howes
  • Patent number: 11458015
    Abstract: Disclosed herein are designs for improved inflatable structures for use during minimally invasive cardiovascular procedures. These inflatable structures facilitate the perfusion of blood through an anatomical structure, such as a heart valve, during the cardiovascular procedure. The inflatable structures are formed of a plurality of balloons arranged radially around a central location. The plurality of balloons form a lumen through which blood flows. Each balloon of the plurality is shaped or configured to stabilize the adjacent balloons, limiting their movement relative to each other. For example, some embodiments can feature balloons with a keystone shape that limits movement of the balloons inward toward the lumen. Some implementations can also include a support coil running through the lumen. The support coil holds enables the lumen to be open to perfusion even in the early stages of balloon inflation.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: October 4, 2022
    Assignee: Edwards Lifesciences Corporation
    Inventors: Yidong M. Zhu, Erik Bulman, Baigui Bian, Sam Sok, Pu Zhou
  • Publication number: 20220280011
    Abstract: An autonomous mobile cleaning robot can include an outer shell and a bumper. The outer shell can include a rim extending around at least a portion of a periphery of the outer shell and can include a first feature connected to the rim. The bumper can be connected to the outer shell and can movable with respect to the outer shell when the bumper is connected to the outer shell. The bumper can include a second feature connected to the inner surface.
    Type: Application
    Filed: April 29, 2022
    Publication date: September 8, 2022
    Inventors: Andrew J. Pastore, Pu Zhou, Eric Burbank
  • Patent number: 11420026
    Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: August 23, 2022
    Assignee: Edwards Lifesciences Corporation
    Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana Kiran Gowdar, Yong Gao, David Delon Williams
  • Patent number: 11406796
    Abstract: A delivery sheath includes an outer tubular layer and an initially folded inner tubular layer. When an implant passes therethrough, the outer tubular layer expands and the inner tubular layer unfolds into an expanded lumen diameter. The sheath may also include selectively placed longitudinal support rods that mediate friction between the inner and outer tubular layers to facilitate easy expansion, thereby reducing the push force needed to advance the implant through the sheath's lumen.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: August 9, 2022
    Assignee: Edwards Lifesciences Corporation
    Inventors: Pu Zhou, Erik Bulman, Timothy A. Geiser, Michael G. Valdez, Yidong M. Zhu, Baigui Bian, Sonny Tran, Richard D. White, Thanh Huy Le, Tung T. Le, Alpana Kiran Gowdar, Yong Gao, David Delon Williams
  • Publication number: 20220241563
    Abstract: Inflatable devices are disclosed including a surface which has a network of polymer chains and is configured to be inflatable into a therapeutically or diagnostically useful shape, and at least one ultrashort laser pulse-formed modification in the surface. The network can, for example, include a network morphology that is substantially unchanged by modification with the ultrashort pulse laser. Ultrashort laser pulses can be laser pulses equal to or less than 1000 picoseconds in duration. Advantageously, the etching process uses a relatively low-heat laser to avoid significant heating of surrounding polymers while modifying the surface (and other structures) of the device. The process is configured so that the polymer chain morphology adjacent the modification is substantially unaffected by the low-heat laser. The resulting inflatable device has customized surface features while still retaining substantially homogenous polymer network morphology.
    Type: Application
    Filed: April 19, 2022
    Publication date: August 4, 2022
    Applicant: Edwards Lifesciences Corporation
    Inventors: Pu Zhou, Bin Tian, Yidong M. Zhu
  • Publication number: 20220151372
    Abstract: A cleaning roller is mountable to a cleaning robot. The cleaning roller includes a sheath comprising a shell, an outer diameter of the shell tapering from a first end portion of the sheath and a second end portion of the sheath toward a center of the roller. The cleaning roller further includes a core including a central portion interlocked with the sheath to rotationally couple the core to the sheath and inhibit relative translation of the sheath and the core along an axis of rotation. An inner surface of the sheath and an outer surface of the core define an air gap therebetween, the air gap extending from the central portion of the core longitudinally along the axis of rotation toward the first end portion or the second end portion.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 19, 2022
    Inventors: Matthew Blouin, Pierre Paul Richard Souloumiac, Pu Zhou
  • Patent number: 11330953
    Abstract: An autonomous mobile cleaning robot can include an outer shell and a bumper. The outer shell can include a rim extending around at least a portion of a periphery of the outer shell and can include a first feature connected to the rim. The bumper can be connected to the outer shell and can movable with respect to the outer shell when the bumper is connected to the outer shell. The bumper can include a second feature connected to the inner surface.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: May 17, 2022
    Assignee: iRobot Corporation
    Inventors: Andrew J. Pastore, Pu Zhou, Eric Burbank
  • Patent number: 11305098
    Abstract: Inflatable devices are disclosed including a surface which has a network of polymer chains and is configured to be inflatable into a therapeutically or diagnostically useful shape, and at least one ultrashort laser pulse-formed modification in the surface. The network can, for example, include a network morphology that is substantially unchanged by modification with the ultrashort pulse laser. Ultrashort laser pulses can be laser pulses equal to or less than 1000 picoseconds in duration. Advantageously, the etching process uses a relatively low-heat laser to avoid significant heating of surrounding polymers while modifying the surface (and other structures) of the device. The process is configured so that the polymer chain morphology adjacent the modification is substantially unaffected by the low-heat laser. The resulting inflatable device has customized surface features while still retaining substantially homogenous polymer network morphology.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: April 19, 2022
    Assignee: Edwards Lifesciences Corporation
    Inventors: Pu Zhou, Bin Tian, Yidong M. Zhu
  • Patent number: 11241082
    Abstract: A cleaning roller is mountable to a cleaning robot. The cleaning roller includes a sheath comprising a shell, an outer diameter of the shell tapering from a first end portion of the sheath and a second end portion of the sheath toward a center of the roller. The cleaning roller further includes a core including a central portion interlocked with the sheath to rotationally couple the core to the sheath and inhibit relative translation of the sheath and the core along an axis of rotation. An inner surface of the sheath and an outer surface of the core define an air gap therebetween, the air gap extending from the central portion of the core longitudinally along the axis of rotation toward the first end portion or the second end portion.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: February 8, 2022
    Assignee: iRobot Corporation
    Inventors: Matthew Blouin, Pierre Paul Richard Souloumiac, Pu Zhou
  • Publication number: 20210361424
    Abstract: An implantable prosthetic valve assembly, according to one embodiment, comprises a frame assembly including a plurality of struts and a prosthetic valve secured inside the frame assembly by sutures. At least one of the plurality of spaced struts contains at least one hole that passes from one side of the at least one strut to another side of the at least one strut and a recess disposed around the hole.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: Edwards Lifesciences Corporation
    Inventors: Yong Gao, Pu Zhou, Tianwen Zhao, Jeffrey Wu
  • Patent number: 11083575
    Abstract: An implantable prosthetic valve assembly, according to one embodiment, comprises a frame assembly including a plurality of struts and a prosthetic valve secured inside the frame assembly by sutures. The sutures are inward of the outermost surface of an outer periphery of the frame assembly. In certain embodiments the struts contain recesses in which sutures can be disposed. In other embodiments, the struts can have holes through them which the sutures pass through. The implantable prosthetic valve assembly can also be collapsed within a catheter such that an outermost surface of a periphery of the frame assembly touches the catheter but the sutures are spaced apart from the catheter or are flush with the outer surface of the frame.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 10, 2021
    Assignee: Edwards Lifesciences Corporation
    Inventors: Yong Gao, Pu Zhou, Tianwen Zhao, Jeffrey Wu
  • Publication number: 20210162170
    Abstract: Disclosed herein are expandable introducer sheaths and methods of making and using the same. The sheaths minimize trauma to a patient's vasculature by allowing for temporary expansion of a portion of the sheath to accommodate passage of a delivery system for a cardiovascular device, then return to a non-expanded state after the passage of the device. The sheath includes an elongated annular member having longitudinally extending channels that facilitate the sheath's temporary expansion. The channels are positioned in such a way that, upon expansion, they enable the movement of protruding contact surfaces toward the inner and outer surfaces of the annular member, reducing friction between the surface and the passing device. Some embodiments of the expandable sheath include an elastic outer layer that pushes the protruding contact surfaces back towards their original positions after the passage of the device.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Applicant: Edwards Lifesciences Corporation
    Inventors: Erik Bulman, Pu Zhou
  • Publication number: 20210093146
    Abstract: An autonomous mobile cleaning robot can include an outer shell and a bumper. The outer shell can include a rim extending around at least a portion of a periphery of the outer shell and can include a first feature connected to the rim. The bumper can be connected to the outer shell and can movable with respect to the outer shell when the bumper is connected to the outer shell. The bumper can include a second feature connected to the inner surface.
    Type: Application
    Filed: September 30, 2019
    Publication date: April 1, 2021
    Inventors: Andrew J. Pastore, Pu Zhou, Eric Burbank
  • Patent number: 10958367
    Abstract: A network apparatus connected with a first clock source and at least one second clock source is provided. The network apparatus includes a system clock, a slave port connected to the first clock source, at least one passive port connected to the at least one second clock source, and a processor that controls synchronization of the system clock. The processor determines, from the slave port, a first clock offset between the system clock and a clock of the first clock source. The processor determines, from the at least one passive port, at least one second clock offset between the system clock and at least one clock of the at least one second clock source. The processor determines a true clock offset based on the first clock offset and the at least one second clock offset and synchronizes the system clock using the true clock offset.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: March 23, 2021
    Assignee: UTStarcom Telecom Co., Ltd.
    Inventors: Yong-Lin Tang, Guang-Pu Zhou, Xiao-Mao Gan, Si-Hai Bao
  • Patent number: 10912919
    Abstract: Disclosed herein are expandable introducer sheaths and methods of making and using the same. The sheaths minimize trauma to a patient's vasculature by allowing for temporary expansion of a portion of the sheath to accommodate passage of a delivery system for a cardiovascular device, then return to a non-expanded state after the passage of the device. The sheath includes an elongated annular member having longitudinally extending channels that facilitate the sheath's temporary expansion. The channels are positioned in such a way that, upon expansion, they enable the movement of protruding contact surfaces toward the inner and outer surfaces of the annular member, reducing friction between the surface and the passing device. Some embodiments of the expandable sheath include an elastic outer layer that pushes the protruding contact surfaces back towards their original positions after the passage of the device.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: February 9, 2021
    Assignee: Edwards Lifesciences Corporation
    Inventors: Erik Bulman, Pu Zhou
  • Publication number: 20210023344
    Abstract: An expandable delivery sheath includes an elastic outer tubular layer and an inner tubular layer. The inner tubular layer include a thick wall portion integrally connected to a thin wall portion. The thin wall portion can include longitudinal reinforcing members/rods that facilitate unfolding during the passage of the implant, thus decreasing the push force and increasing the consistency of the push force. The inner tubular layer can have a non-expanded or folded condition wherein the thin wall portion folds onto an outer surface of the thick wall portion under urging of the elastic outer tubular layer. When an implant passes therethrough, the outer tubular layer stretches and the inner tubular layer unfolds into an expanded lumen diameter. Once the implant passes, the outer tubular layer again urges the inner tubular layer into the non-expanded condition with the sheath reassuming its smaller profile.
    Type: Application
    Filed: October 12, 2020
    Publication date: January 28, 2021
    Inventors: Pu Zhou, Erik Bulman, Baigui Bian