Patents by Inventor Fen Du

Fen Du 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).

  • Patent number: 11839376
    Abstract: A handle assembly (12) of a hand-held surgical instrument (10) includes a handle housing (26), a motor (36), and a dual thread lead screw (46) operably coupled to the motor (36) and configured to move proximally and/or distally in response to an actuation of the motor (36). A first thread pitch of the lead screw (46) is suitable for effecting a closing of jaw members (20a, 20b) of an end effector (20), and a second thread pitch of the lead screw (46) is suitable for effecting a stapling function of the end effector (20).
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: December 12, 2023
    Assignee: COVIDIEN LP
    Inventors: Shouwei Li, Yezhou Wu, Fen Du, Zhihua Zhang
  • Publication number: 20230181189
    Abstract: A surgical stapling device includes a staple reload and a handle assembly that supports a drive rack, a motor assembly, a gear assembly, a reload select mechanism, and a safety toggle mechanism. The gear assembly is adapted to facilitate uncoupling of the motor assembly from the drive rack to allow manual movement of the drive rack. The reload select mechanism allows the length of a stroke of the drive rack to be selectively adjusted to allow the stapling device to accommodate different length staple reloads. The safety toggle mechanism is provided to move the stapling device from a non-firing state to a firing state to allow for firing of the stapling device.
    Type: Application
    Filed: February 2, 2023
    Publication date: June 15, 2023
    Inventors: Xiaowen Sun, Yezhou Wu, Lin Chen, Fen Du, Shouwei Li
  • Patent number: 11571214
    Abstract: A surgical stapling device includes a staple reload and a handle assembly that supports a drive rack, a motor assembly, a gear assembly, a reload select mechanism, and a safety toggle mechanism. The gear assembly is adapted to facilitate uncoupling of the motor assembly from the drive rack to allow manual movement of the drive rack. The reload select mechanism allows the length of a stroke of the drive rack to be selectively adjusted to allow the stapling device to accommodate different length staple reloads. The safety toggle mechanism is provided to move the stapling device from a non-firing state to a firing state to allow for firing of the stapling device.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: February 7, 2023
    Assignee: Covidien LP
    Inventors: Xiaowen Sun, Yezhou Wu, Lin Chen, Fen Du, Shouwei Li
  • Publication number: 20220265272
    Abstract: A handle assembly (12) of a hand-held surgical instrument (10) includes a handle housing (26), a motor (36), and a dual thread lead screw (46) operably coupled to the motor (36) and configured to move proximally and/or distally in response to an actuation of the motor (36). A first thread pitch of the lead screw (46) is suitable for effecting a closing of jaw members (20a, 20b) of an end effector (20), and a second thread pitch of the lead screw (46) is suitable for effecting a stapling function of the end effector (20).
    Type: Application
    Filed: August 30, 2019
    Publication date: August 25, 2022
    Inventors: Shouwei Li, Yezhou Wu, Fen Du, Zhihua Zhang
  • Publication number: 20220031321
    Abstract: A surgical stapling device includes a staple reload and a handle assembly that supports a drive rack, a motor assembly, a gear assembly, a reload select mechanism, and a safety toggle mechanism. The gear assembly is adapted to facilitate uncoupling of the motor assembly from the drive rack to allow manual movement of the drive rack. The reload select mechanism allows the length of a stroke of the drive rack to be selectively adjusted to allow the stapling device to accommodate different length staple reloads. The safety toggle mechanism is provided to move the stapling device from a non-firing state to a firing state to allow for firing of the stapling device.
    Type: Application
    Filed: October 16, 2018
    Publication date: February 3, 2022
    Inventors: Xiaowen Sun, Yezhou Wu, Lin Chen, Fen Du, Shouwei Li
  • Publication number: 20200000470
    Abstract: An anvil for use with a linear stapling instrument includes an anvil body defining a longitudinal axis and an anvil plate. The anvil plate includes a base having a first side defining at least one staple forming pocket and a second side having a pair of outer beams extending along the longitudinal axis and a central beam disposed between the outer beams. The central beam includes at least one mounting tab, which is receivable within at least one corresponding tab receiving opening of the anvil body to mount the anvil plate relative to the anvil body.
    Type: Application
    Filed: March 17, 2017
    Publication date: January 2, 2020
    Inventors: Fen Du, Jiangfeng Zhang, Hui Zhan