Patents by Inventor Tejashri Kumar

Tejashri Kumar 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: 12364793
    Abstract: Injectable biopolymer compositions and associated systems and methods are disclosed herein. In some embodiments, a biopolymer composition for treating an aneurysm is provided. The biopolymer composition can include an injectable hydrogel including: a biopolymer; a chemical crosslinker forming covalent bonds with the biopolymer; and a stabilizer configured to inhibit ex vivo precipitation of the biopolymer. The injectable hydrogel can have an ex vivo storage modulus of at least 100 Pa at 37° C. over a linear viscoelastic region of the injectable hydrogel. The ex vivo storage modulus can be greater than an ex vivo loss modulus of the injectable hydrogel over the linear viscoelastic region of the injectable hydrogel.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: July 22, 2025
    Assignee: COVIDIEN LP
    Inventors: Ali M. Hussain, Tejashri Kumar, John M. Wainwright, Junwei Li, Drew P. Amery, Jie Wen
  • Publication number: 20250032759
    Abstract: A guidewire comprising: a core wire; an elongated member extending along a longitudinal axis and defining: an inner surface defining an inner lumen, a plurality of openings disposed along the elongated member, each opening extending from an outer surface of the elongated member towards the inner surface, a first locking recess extending through the elongated member from the outer surface to the inner surface, a second locking recess extending from the inner surface towards a second location on the outer surface, wherein the first locking recess and the second locking recess defines a locking channel; and a locking element disposed within the locking channel and affixed to the elongated member, the locking element defining an aperture configured to receive the core wire, wherein the locking element is configured to inhibit unintended proximal movement of the core wire along the longitudinal axis relative to the elongated member.
    Type: Application
    Filed: July 25, 2024
    Publication date: January 30, 2025
    Inventors: Daniel J. Deen, Ashok R. Nageswaran, Tejashri Kumar
  • Publication number: 20240374266
    Abstract: Systems and methods for removing clots via aspiration are disclosed herein. A catheter includes an elongate body defining a lumen. The distal region includes a distal openings region, a proximal openings region and a thrombus interface region between the distal and the proximal openings regions. The distal and proximal openings regions each includes one or more openings in fluid communication with the lumen. In use, the catheter is positioned from a proximal side of the clot so that the distal openings region positioned at least partially distal of the clot and the proximal openings region positioned at least partially proximal of the clot. An aspiration catheter is positioned with its distal end at the proximal end of the clot. The clot is then withdrawn in the proximal direction with a combination of aspiration applied to one or more of the catheter or the aspiration catheter.
    Type: Application
    Filed: February 7, 2024
    Publication date: November 14, 2024
    Inventors: Tejashri Kumar, Mark Ashby, Ya Guo, Jia Sun, Maria De Jesus Sanson, Arshia Amin Ehsanipour, Danyong Zeng
  • Publication number: 20220296788
    Abstract: Injectable biopolymer compositions and associated systems and methods are disclosed herein. In some embodiments, a biopolymer composition for treating an aneurysm is provided. The biopolymer composition can include an injectable hydrogel including: a biopolymer; a chemical crosslinker forming covalent bonds with the biopolymer; and a stabilizer configured to inhibit ex vivo precipitation of the biopolymer. The injectable hydrogel can have an ex vivo storage modulus of at least 100 Pa at 37° C. over a linear viscoelastic region of the injectable hydrogel. The ex vivo storage modulus can be greater than an ex vivo loss modulus of the injectable hydrogel over the linear viscoelastic region of the injectable hydrogel.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 22, 2022
    Inventors: Ali M. Hussain, Tejashri Kumar, John M. Wainwright, Junwei Li, Drew P. Amery, Jie Wen
  • Patent number: 11263923
    Abstract: Vasculature models and associated systems and methods are disclosed herein. In some embodiments, the model comprises a tube including a lumen extending therethrough, a synthetic thrombus including a magnetic component, and a magnetized member. The thrombus is sized to be positioned within the lumen, and the magnetized member is positioned peripheral to the thrombus such that a radially outward force is exerted on the thrombus via the magnetized member. The tube may be part of a network of tubes that generally resemble human neurovasculature.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: March 1, 2022
    Assignee: COVIDIEN LP
    Inventors: Tejashri Kumar, Hoai Nguyen, John Wainwright, Evan Epstein, Gaurav Girdhar, Ujwal Jalgaonkar, Eric Mintz
  • Publication number: 20210125525
    Abstract: Vasculature models and associated systems and methods are disclosed herein. In some embodiments, the model comprises a tube including a lumen extending therethrough, a synthetic thrombus including a magnetic component, and a magnetized member. The thrombus is sized to be positioned within the lumen, and the magnetized member is positioned peripheral to the thrombus such that a radially outward force is exerted on the thrombus via the magnetized member. The tube may be part of a network of tubes that generally resemble human neurovasculature.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 29, 2021
    Inventors: Tejashri Kumar, Hoai Nguyen, John Wainwright, Evan Epstein, Gaurav Girdhar, Ujwal Jalgaonkar, Eric Mintz