Patents by Inventor Deepak K. Sharma

Deepak K. Sharma 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: 20220202436
    Abstract: An elongated tissue traction device adhered to target tissue and configured to lift the target tissue away from surrounding tissue. The tissue traction device may lift the target tissue as a surgical procedure is performed, such as resecting or cutting of the target tissue. The tissue traction device may be a bistable spring. The tissue traction device is in a first stable configuration when initially adhered to the target tissue. The tissue traction device may be shifted (e.g., actuated) into the second configuration, such as when the tissue is resected or cut around the target tissue to which the tissue traction device is adhered. In the second stable configuration, the tissue traction device curls and lifts the target tissue from the surrounding tissue.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 30, 2022
    Inventors: Nabarun Bhowmick, Deepak K. Sharma, Subodh Morey, Shrikant V. Raut, James J. Scutti, Lauren S. Lydecker, Barry Weitzner, James Weldon
  • Publication number: 20220192648
    Abstract: A tissue traction device including a scaffold structure configured to anchor the tissue traction device in place such that a tissue traction element is anchored upon deployment of the scaffold structure and without further manipulation of the tissue traction device (such as to grasp tissue or otherwise anchor the tissue traction element to tissue). The scaffold structure may be self-supporting/self-standing to be in a deployed expanded configuration to anchor the tissue traction device with respect to the tissue. The tissue traction element may be pivotably coupled to the scaffold structure, such as to a rigid element of the scaffold structure. The tissue traction element, when anchored by the scaffold, exerts a force (e.g., traction force) on a region of target tissue to which the tissue traction element is coupled, such as via a tissue engagement member.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Inventors: Nabarun Bhowmick, Deepak K. Sharma, Shrikant V. Raut
  • Publication number: 20210236160
    Abstract: A device for draining cysts includes a catheter system configured to deploy an absorbent material, including but not limited to a foam, into a cyst. The absorbent material advantageously absorbs fluid contained within the cyst, for example fluid that may remain following aspiration, reducing the potential for cyst recurrence. In various embodiments, the absorbent material may be bioabsorbable, radiolucent, echogenic, drug eluting, or a combination thereof. In some embodiments the device may further include or be coupled to a vacuum source which applies negative pressure to the cyst during foam delivery, thereby reduce the overall size and/or profile of the cyst.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 5, 2021
    Inventors: Hitendra Purohit, Agrim Mishra, Deepak K. Sharma, Subodh Morey, Nabarun Bhowmick
  • Publication number: 20090114623
    Abstract: One method of the invention is for welding and includes obtaining first and second members each including an extrusion having a through hole and includes obtaining first and second electrodes each having an electrode portion. The second member is positioned to have the second extrusion nest in the first through hole against the first extrusion. The first electrode is positioned to have the first-electrode portion nest in the second through hole against the inside of the second extrusion. The second electrode is positioned to have the second-electrode portion contact the outside of the first extrusion. Another method of the invention is for welding and includes obtaining a tube having an end form and a member having first and second portions. The tube and the member are positioned with the end form contacting the first portion while leaving a recess between the end form and the second portion.
    Type: Application
    Filed: January 31, 2008
    Publication date: May 7, 2009
    Inventors: Ryan J. Suhre, Venkatasubramanian Ananthanarayanan, Johnny R. Gentry, Andrzej Marian Pawlak, James M. Payne, Deepak K. Sharma, Kenneth E. Johnson
  • Patent number: 7476824
    Abstract: Welding apparatus includes a first electrode having an electrode surface adapted to contact an outward end fold of a heat-exchanger tube which is positioned in an orifice of a tubesheet with the fold contacting an outward-facing side of the tubesheet. A second electrode has an electrode surface adapted to contact the outward-facing side of the tubesheet. Another welding apparatus includes a first electrode having an electrode surface adapted to contact an end of a heat exchanger tube positioned in an orifice of a tubesheet. The first electrode is movable to create an outward end fold in the tube and deform the fold against the outward-facing side of the tubesheet. Another welding apparatus includes a second electrode having an electrode surface adapted to contact the outward-facing side of a tubesheet and having cutouts which surround each of a plurality of heat-exchanger tubes and which are adapted to receive a first electrode.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: January 13, 2009
    Assignee: Delphi Technologies, Inc.
    Inventors: Venkatasubramanian Ananthanarayanan, Andrzej Marian Pawlak, James M. Payne, Deepak K. Sharma, Kenneth E Johnson
  • Patent number: 7253372
    Abstract: One method for welding includes obtaining a heat-exchanger tube having an outward fold. The tube is inserted at least partially through the orifice of a tubesheet with the fold contacting one of the outward and inward facing sides of the tubesheet. A first electrode is positioned in contact with the outward fold and a second electrode in contact with the one side of the tubesheet. Another method for welding includes obtaining a heat-exchanger tube having a tube end. The tube is inserted at least partially through the orifice of a tubesheet. A first electrode is positioned in contact with the first tube end and a second electrode is positioned in contact with one of the outward and inward facing sides of the tubesheet. The first electrode is moved against the first tube end to create an outward fold with the outward fold contacting the one side of the tubesheet.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: August 7, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Venkatasubramanian Ananthanarayanan, James M. Payne, Deepak K. Sharma, Kenneth E Johnson, Andrzej Marian Pawlak
  • Patent number: 6960625
    Abstract: A transparent polyurethane-hydrogel composition includes a reaction product in aqueous solvent of a prepolymer and a water-soluble crosslinker in the substantial absence of organic solvent, and such a composition can be prepared by admixing a prepolymer and a water-soluble crosslinker in aqueous solvent and in the substantial absence of organic solvent. A prepolymer is present in an amount of no greater than about 5 weight percent based on total weight of all hydrogel components. The prepolymer is generally prepared from at least one water-soluble polyol and an isocyanate. A water-soluble crosslinker generally has a crosslinker functionality of at least 2 and is selected to provide a site ratio of initial isocyanate to crosslinker (i.e., moles NCO×functionality/moles crosslinker×functionality) of at least about 1.5 and no greater than about 2.6. In one embodiment, a crosslinker is effective to react with and solubilize residual isocyanate concurrently with the reaction between prepolymer and crosslinker.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: November 1, 2005
    Assignee: Dow Global Technologies Inc.
    Inventors: Christopher P. Christenson, Stan Wrobel, Deepak K. Sharma, Joey W. Storer, Andrew F. Sandford
  • Publication number: 20030134294
    Abstract: A biologic can be immobilized in a transparent polyurethane-hydrogel composition. Such a polyurethane-hydrogel composition can be prepared from forming a polyurethane-hydrogel mixture and immobilizing a biologic in the mixture. The mixture can be formed by admixing a prepolymer and a water-soluble crosslinker in aqueous solvent and in the substantial absence of organic solvent. A suitable prepolymer generally includes at least one water-soluble polyol and at least one isocyanate and can be added to the mixture in an amount of no greater than about 5 weight percent based on total weight of all components. A suitable crosslinker generally has a crosslinker functionality of at least 2. A biologic includes cells, peptides, nucleics, peptide nucleic acids, saccharides, lipopolysaccharides, glycolipids, and combinations of these. A polyurethane-hydrogel composition having an immobilized biologic can be particularly useful for biomedical applications.
    Type: Application
    Filed: May 21, 2002
    Publication date: July 17, 2003
    Inventors: Andrew F. Sandford, Venkiteswaran Subramanian, Jeffrey R. Allen, Paul E. Swanson, Joey W. Storer, Deepak K. Sharma
  • Publication number: 20030105221
    Abstract: A transparent polyurethane-hydrogel composition includes a reaction product in aqueous solvent of a prepolymer and a water-soluble crosslinker in the substantial absence of organic solvent, and such a composition can be prepared by admixing a prepolymer and a water-soluble crosslinker in aqueous solvent and in the substantial absence of organic solvent. A prepolymer is present in an amount of no greater than about 5 weight percent based on total weight of all hydrogel components. The prepolymer is generally prepared from at least one water-soluble polyol and an isocyanate. A water-soluble crosslinker generally has a crosslinker functionality of at least 2 and is selected to provide a site ratio of initial isocyanate to crosslinker (i.e., moles NCO×functionality/moles crosslinker×functionality) of at least about 1.5 and no greater than about 2.6.
    Type: Application
    Filed: May 21, 2002
    Publication date: June 5, 2003
    Inventors: Christopher P. Christenson, Stan Wrobel, Deepak K. Sharma, Joey W. Storer, Andrew F. Sandford