Patents by Inventor Yongwei Pan

Yongwei Pan 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: 12279781
    Abstract: A 2D image-guided surgical robot system for distal locking operations includes surgical image acquisition equipment, a robot arm, a robot end effector attached to the robot arm, and a remote operation workstation. To perform a distal locking operation, the position of the image acquisition device is adjusted to obtain a round outline of a lockhole in the image. A distortion correction is performed. The position of the target lockhole is assigned by a user through the GUI of the remote operation workstation, and the remote operation workstation calculates a robot motion quantity using image feedback control law and moves the robot accordingly. The “image-and-move” procedure is repeated several times until the drill guide is accurately aligned to the lockhole, then the distal locking operation is accomplished by first drilling a guide hole using a guide wire through the drill guide, and then screwing a locking screw through the guide hole.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: April 22, 2025
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Gangtie Zheng, Shijie Zhu, Zhe Zhao, Yongwei Pan
  • Publication number: 20250013260
    Abstract: In accordance with an embodiment, a foldable apparatus includes a first shielding plate and a second shielding plate; when the foldable apparatus is in an unfolded state, the first shielding plate and the second shielding plate are configured to be interconnected; and when the foldable apparatus is in a folded state, the first shielding plate and the second shielding plate are configured to be disposed between a first mounting plate and a second mounting plate in a stacked manner.
    Type: Application
    Filed: September 20, 2024
    Publication date: January 9, 2025
    Inventors: Linhui Niu, Wenjie Jiang, Zhengyi Xu, Cong Xi, Delong Zhu, Yongwei Pan
  • Publication number: 20230310090
    Abstract: A target tracking method and system for use with a surgical robot is disclosed. The method includes: acquiring a visible light image and a depth image of a marker attached on a patient's body surface, where the marker is provided with a black and white checkerboard pattern, and a two-dimensional code is arranged inside squares of the checkerboard; performing two-dimensional code detection on the visible light image to obtain the checkerboard corners' 2D coordinates and the IDs of the two-dimensional codes on the marker; and obtaining 3D coordinates of checkerboard corners in the marker by using the depth image, 2D code corners' coordinates and 2D code ID. According to the 3D coordinates of the checkerboard corner, the position information of the tracked target in the 3D space is obtained.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Inventors: Gangtie Zheng, Shijie Zhu, Yu Chen, Bicong Zhang, Yongwei Pan, Zhe Zhao, Jiuzheng Deng
  • Patent number: 11751951
    Abstract: A surface tracking-based surgical robot system for drilling operations includes surface scanning equipment, a robot arm, and a workstation. To perform a drilling operation, surface information for the target surgery area and the surgical tool held by the robot arm is simultaneously collected with the same surface scanning equipment. A preoperative 3D image of a surgical area and a CAD model of the surgical tool are registered to the collected surface information, through which the relative position between a surgical path and the surgical tool is obtained. Using this relative position, the robot arm aligns to the predefined surgical path using a feedback control method running on a workstation. The drilling operation is then autonomously executed by the robot arm or manually performed under the guidance of the surgical tool held by the robot arm.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: September 12, 2023
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Gangtie Zheng, Shijie Zhu, Zhe Zhao, Yongwei Pan
  • Publication number: 20220031398
    Abstract: A surface tracking-based surgical robot system for drilling operations includes surface scanning equipment, a robot arm, and a workstation. To perform a drilling operation, surface information for the target surgery area and the surgical tool held by the robot arm is simultaneously collected with the same surface scanning equipment. A preoperative 3D image of a surgical area and a CAD model of the surgical tool are registered to the collected surface information, through which the relative position between a surgical path and the surgical tool is obtained. Using this relative position, the robot arm aligns to the predefined surgical path using a feedback control method running on a workstation. The drilling operation is then autonomously executed by the robot arm or manually performed under the guidance of the surgical tool held by the robot arm.
    Type: Application
    Filed: September 30, 2020
    Publication date: February 3, 2022
    Inventors: Gangtie Zheng, Shijie Zhu, Zhe Zhao, Yongwei Pan
  • Publication number: 20210259711
    Abstract: A 2D image-guided surgical robot system for distal locking operations includes surgical image acquisition equipment, a robot arm, a robot end effector attached to the robot arm, and a remote operation workstation. To perform a distal locking operation, the position of the image acquisition device is adjusted to obtain a round outline of a lockhole in the image. A distortion correction is performed. The position of the target lockhole is assigned by a user through the GUI of the remote operation workstation, and the remote operation workstation calculates a robot motion quantity using image feedback control law and moves the robot accordingly. The “image-and-move” procedure is repeated several times until the drill guide is accurately aligned to the lockhole, then the distal locking operation is accomplished by first drilling a guide hole using a guide wire through the drill guide, and then screwing a locking screw through the guide hole.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 26, 2021
    Inventors: Gangtie Zheng, Shijie Zhu, Zhe Zhao, Yongwei Pan
  • Publication number: 20210128261
    Abstract: A 2D image-guided surgical robot system for drilling operations includes surgical image acquisition equipment, robot positioning and drilling equipment, and a remote operation workstation. To perform a drilling operation, images of the surgery area are acquired with the image acquisition equipment and are registered to the robot, and a distortion correction is performed. A drilling path is assigned by a doctor through the GUI of the remote operation workstation, and the remote operation workstation calculates the robot motion quantity using a position-based method and moves the robot accordingly. Based on the relative position of the surgical tool and drilling path in the images, the remote operation workstation calculates a motion quantity using image feedback and controls the robot to make further fine adjustments to the drilling path. The robot then performs the drilling operation with an electric drill or holds a drill guide for doctors to perform the drilling manually.
    Type: Application
    Filed: May 15, 2020
    Publication date: May 6, 2021
    Inventors: Gangtie Zheng, Shijie Zhu, Yu Chen, Qizhong Li, Yongwei Pan, Zhe Zhao, Jiuzheng Deng, Jianjin Zhu, Dawei He
  • Patent number: 10874469
    Abstract: A remotely operated orthopedic surgical robot system for performing a fracture reduction operation using a visual-servo control method is provided. The system includes the surgical image acquisition equipment, the fracture reduction robot and the remote operation workstation. The fracture reduction robot has a plurality of types. The remote operation workstation includes a graphical user interface for doctors to examine the fracture reduction path planning result made by an artificial intelligence algorithm and to manually perform the path planning. The remote operation workstation calculates the robot control quantity using the visual servo control method according to the path planning result and sends it to the robot.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: December 29, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Gangtie Zheng, Shijie Zhu, Yu Chen, Bicong Zhang, Yongwei Pan, Zhe Zhao, Jiuzheng Deng
  • Publication number: 20190125461
    Abstract: A remotely operated orthopedic surgical robot system for performing a fracture reduction operation using a visual-servo control method is provided. The system includes the surgical image acquisition equipment, the fracture reduction robot and the remote operation workstation. The fracture reduction robot has a plurality of types. The remote operation workstation includes a graphical user interface for doctors to examine the fracture reduction path planning result made by an artificial intelligence algorithm and to manually perform the path planning The remote operation workstation calculates the robot control quantity using the visual servo control method according to the path planning result and sends it to the robot.
    Type: Application
    Filed: September 21, 2018
    Publication date: May 2, 2019
    Inventors: Gangtie Zheng, Shijie Zhu, Yu Chen, Bicong Zhang, Yongwei Pan, Zhe Zhao, Jiuzheng Deng