Patents by Inventor Wangtao CHANG

Wangtao CHANG 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: 11759228
    Abstract: The present application provides an ultrasonic surgical instrument with a detachable cannula component, comprising a cannula component and an instrument body, wherein the instrument body comprises a scalpel bar for realizing an ultrasonic cutting effect. The cannula component is mounted on the instrument body or dismounted from the instrument body along the longitudinal axis of the scalpel bar by a detachable structure. The present application also provides another ultrasonic surgical instrument with a detachable cannula component, comprising a detachable cannula component and an instrument body, wherein the instrument body comprises a non-detachable internal cannula and a scalpel bar capable of realizing an ultrasonic cutting effect. Compared with the prior art, the ultrasonic surgical instrument with a detachable cannula component of the present application has the advantages of being simple in structure, convenient to mount and dismount and low in use cost.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 19, 2023
    Assignees: EZISURG MEDICAL CO., LTD., EZISURG (SUZHOU) MEDICAL CO., LTD.
    Inventors: Honglin Nie, Zhidong Li, Jidong Chen, Wangtao Chang
  • Publication number: 20220087707
    Abstract: An ultrasonic surgical instrument (3) having a side-button triggered coagulation function, including a cutting button (7), a coagulation button (5), a scalpel bar (31), a clamp (32), a cannula assembly (33), a handle (6), and an internal structure thereof, wherein the cutting button (7) is pressed by an index finger to trigger a cutting function, and the coagulation button (5) is pressed by a thumb to trigger the coagulation function. The ultrasonic surgical instrument can reduce misoperation of a surgeon during actual surgery, and relieves fatigue of the surgeon. Moreover, the side-button triggered coagulation function can be triggered by a left or a right hand of the surgeon, and the surgeon who can operate with both the left hand and the right hand can operate the ultrasonic surgical instrument conveniently.
    Type: Application
    Filed: December 20, 2019
    Publication date: March 24, 2022
    Inventors: Honglin NIE, Jidong CHEN, Zhidong LI, Guozheng ZHU, Wangtao CHANG, Guangbin ZHANG, Xiaoye GU
  • Publication number: 20210161552
    Abstract: The present application provides a reusable ultrasonic surgical instrument, comprising a cannula subassembly, a scalpel waveguide, a base and a clamping driving component, wherein the cannula subassembly comprises a pair of clamp forceps at a distal end, an external cannula and an internal cannula, and the external cannula and the internal cannula are both provided by being coaxial with the scalpel bar; two rotating shafts are provided at a proximal end of the clamp forceps, one of the two rotating shafts is rotatably connected with the external cannula, the other rotating shaft is rotatably connected with the internal cannula; the cannula subassembly can be dismounted from the base and the clamping driving component towards a distal end direction of the axis of the scalpel bar or be mounted on the base or the clamping driving component towards a proximal end direction of the axis of the scalpel bar; the external cannula is connected with the base by one or multiple first detachable structures; and the intern
    Type: Application
    Filed: July 9, 2018
    Publication date: June 3, 2021
    Inventors: Guoxin LI, Zhidong LI, Yubin ZHENG, Changjiang SUN, Yu ZHANG, Hao DING, Ruixuan LIU, Wangtao CHANG
  • Publication number: 20210085358
    Abstract: The present application provides a surgical instrument with an electric drive clamping mechanism, comprising a clamping arm and an electric drive clamping mechanism, wherein the electric drive clamping mechanism comprises a moving component, a static component and a driving component; the surgical instrument is characterized in that: the driving component comprises a magnetizing body and a magnetized body; one of the magnetizing body and the magnetized body is connected with the moving component, and the other one is connected with the static component; the moving component is connected with the clamping arm; the magnetizing body generates a magnetic force when current is connected, the direction and degree of the magnetic force can be changed by changing current direction and degree; the magnetized body is attracted or repelled by the magnetic force generated by the magnetizing body, thereby driving the moving component to get close to or keep far away from the static component and further driving the clampi
    Type: Application
    Filed: July 9, 2018
    Publication date: March 25, 2021
    Inventors: Zhidong LI, Yu ZHANG, Wangtao CHANG
  • Publication number: 20200360046
    Abstract: The present application provides an ultrasonic surgical instrument with a detachable cannula component, comprising a cannula component and an instrument body, wherein the instrument body comprises a scalpel bar for realizing an ultrasonic cutting effect. The cannula component is mounted on the instrument body or dismounted from the instrument body along the longitudinal axis of the scalpel bar by a detachable structure. The present application also provides another ultrasonic surgical instrument with a detachable cannula component, comprising a detachable cannula component and an instrument body, wherein the instrument body comprises a non-detachable internal cannula and a scalpel bar capable of realizing an ultrasonic cutting effect. Compared with the prior art, the ultrasonic surgical instrument with a detachable cannula component of the present application has the advantages of being simple in structure, convenient to mount and dismount and low in use cost.
    Type: Application
    Filed: December 21, 2018
    Publication date: November 19, 2020
    Inventors: Honglin NIE, Zhidong LI, Jidong CHEN, Wangtao CHANG