Patents by Inventor Lan Chang

Lan 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).

  • Publication number: 20250329803
    Abstract: A surgical instrument includes a handle assembly and a battery assembly configured to removably couple to the handle assembly. The handle assembly includes a handle housing, an electronic component within the housing, a handle finger extending from the handle housing, and an electrical contact electrically coupled to the electronic component. The battery assembly includes a battery housing, a battery disposed in the battery housing, a battery contact electrically coupled to the battery, and a discharge circuit board. The discharge circuit board is configured to discharge the battery and is movable within the battery housing from a first position to a second position by the handle finger upon coupling the battery assembly to the handle assembly.
    Type: Application
    Filed: May 9, 2023
    Publication date: October 23, 2025
    Applicant: Covidien LP
    Inventors: Lan CHANG, Xingrui CHEN, Anthony D. CALDERONI, John M. PANTAZIS, Eric WIGFORSS
  • Patent number: 12414770
    Abstract: A surgical device includes an elongate body, a tool assembly supported on the elongate body for articulation, and an articulating mechanism for selectively articulating the tool assembly in relation to the elongate body. The articulation mechanism includes an articulation lever and a pair of locking assemblies. The articulation lever is movable to articulate the tool assembly in relation to the elongate body about an articulation axis. The locking assemblies are configured to prevent movement of the articulation lever until one of the locking assemblies is moved from a locked position to an unlocked position. The locking assemblies are movable from their locked positions to their unlocked positions prior to movement of the articulation lever to reduce the force required to manipulate the articulation lever and to facilitate articulation in continuous fashion.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: September 16, 2025
    Assignee: Covidien LP
    Inventor: Lan Chang
  • Patent number: 12279773
    Abstract: A surgical stapling instrument (10) includes anvil and cartridge portions (100, 200) operably coupled together. The anvil and cartridge portions (100, 200) are transitionable between clamped and unclamped configurations. The surgical stapling instrument (10) also includes a clamp detection assembly (300) with a plunger (312) slidably disposed in a chamber (310) of a housing (302), a block (314) with an aperture (316) attached to the plunger (312), a spring (318) disposed in the chamber (310), and a button (340) slidably disposed in a recess (180) of the anvil portion (100).
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: April 22, 2025
    Assignee: Covidien LP
    Inventor: Lan Chang
  • Publication number: 20240341760
    Abstract: A surgical stapling instrument (10) includes anvil and cartridge portions (100, 200) operably coupled together. The anvil and cartridge portions (100, 200) are transitionable between clamped and unclamped configurations. The surgical stapling instrument (10) also includes a clamp detection assembly (300) with a plunger (312) slidably disposed in a chamber (310) of a housing (302), a block (314) with an aperture (316) attached to the plunger (312), a spring (318) disposed in the chamber (310), and a button (340) slidably disposed in a recess (180) of the anvil portion (100).
    Type: Application
    Filed: August 4, 2021
    Publication date: October 17, 2024
    Inventor: Lan Chang
  • Patent number: 12089838
    Abstract: A shipping cover for a staple cartridge includes a body having an upper surface and a lower surface that is in close opposition to the staple cartridge when the shipping cover is secured to the staple cartridge. The shipping cover includes a latch that is received within a body of the staple cartridge to secure the shipping cover to the cartridge body. The latch is manually movable by a clinician to facilitate removal of the shipping cover from the staple cartridge.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: September 17, 2024
    Assignee: Covidien LP
    Inventors: Lan Chang, Xiao Zhou, Hui Zhan, Jun Zhang
  • Publication number: 20240252169
    Abstract: A surgical device includes an elongate body, a tool assembly supported on the elongate body for articulation, and an articulating mechanism for selectively articulating the tool assembly in relation to the elongate body. The articulation mechanism includes an articulation lever and a pair of locking assemblies. The articulation lever is movable to articulate the tool assembly in relation to the elongate body about an articulation axis. The locking assemblies are configured to prevent movement of the articulation lever until one of the locking assemblies is moved from a locked position to an unlocked position. The locking assemblies are movable from their locked positions to their unlocked positions prior to movement of the articulation lever to reduce the force required to manipulate the articulation lever and to facilitate articulation in continuous fashion.
    Type: Application
    Filed: May 21, 2021
    Publication date: August 1, 2024
    Inventor: Lan Chang
  • Publication number: 20230277172
    Abstract: A shipping cover for a staple cartridge includes a body having an upper surface and a lower surface that is in close opposition to the staple cartridge when the shipping cover is secured to the staple cartridge. The shipping cover includes a latch that is received within a body of the staple cartridge to secure the shipping cover to the cartridge body. The latch is manually movable by a clinician to facilitate removal of the shipping cover from the staple cartridge.
    Type: Application
    Filed: July 21, 2020
    Publication date: September 7, 2023
    Inventors: Lan Chang, Xiao Zhou, Hui Zhan, Jun Zhang
  • Patent number: 8112644
    Abstract: A dynamic voltage scaling scheduling method executes one of the steps. When one task in the delayed task set requires for being executed, a working voltage required for executing the task is increased, and the task is removed from the delayed task set; when one task in the delayed task set requires for sharing resources, the working voltage required by the task is set as the current working voltage or a larger one in the minimum upper bounds of all the works requiring for sharing resources; and when one task does not belong to the delayed task set, but the waiting time has exceeded the period of the work, the working voltage for executing the task is reduced, and the task is added in the delayed task set.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: February 7, 2012
    Assignee: Institute for Information Industry
    Inventors: Chih-Hsiang Huang, Jeng-Wei Lee, Mong-Fong Horng, Yau-Hwang Kuo, Pau-Choo Chung, Lan Chang, Jen-Wei Hu
  • Publication number: 20080148273
    Abstract: A dynamic voltage scaling scheduling method executes one of the steps. When one task in the delayed task set requires for being executed, a working voltage required for executing the task is increased, and the task is removed from the delayed task set; when one task in the delayed task set requires for sharing resources, the working voltage required by the task is set as the current working voltage or a larger one in the minimum upper bounds of all the works requiring for sharing resources; and when one task does not belong to the delayed task set, but the waiting time has exceeded the period of the work, the working voltage for executing the task is reduced, and the task is added in the delayed task set.
    Type: Application
    Filed: November 8, 2007
    Publication date: June 19, 2008
    Applicant: INSTITUTE FOR INFORMATION INDUSTRY
    Inventors: Chih-Hsiang Huang, Jeng-Wei Lee, Mong-Fong Horng, Yau-Hwang Kuo, Pau-Choo Chung, Lan Chang, Jen-Wei Hu
  • Publication number: 20020147701
    Abstract: A method for searching in multiple human resource hosts via a computer. Wherein the computer comprises a user interface (UI) for accessing a search condition. The method firstly begins with inputting the search conditions on the UI. Next, the search conditions are transmitted to the human resource hosts with each of the human resource hosts' data format retrieved from a server data format database in the computer. After that, each human resource host retrieves a search result according to the search conditions, and then posts the search result to the computer. Then the search result is stored in a found profile database of the computer and displayed in UI. The method enables a user to register and search the suitable job seekers or position-vacant companies simultaneously in the multiple human resource hosts, instead of repeatedly inputting processes in different hosts.
    Type: Application
    Filed: October 24, 2001
    Publication date: October 10, 2002
    Inventor: Lan Chang
  • Publication number: 20010054041
    Abstract: A method for searching in multiple relationship-searching hosts. The method can be installed in a computer, wherein the computer comprises a user interface (UI) to access search conditions. Firstly the method begins with inputting the search conditions on the UI. Next, the search conditions are transmitted to the hosts with each of the hosts' data format retrieved from a server data format database in the computer. Then the hosts retrieve search results according to the search conditions and transmit the search results to the computer. Next, the search results are stored in a found profile database of the computer. The method makes a user be capable to register and search matched users in the multiple relationship-searching hosts, instead of repeatedly behavior of search in different hosts.
    Type: Application
    Filed: December 27, 2000
    Publication date: December 20, 2001
    Inventor: Lan Chang