Patents by Inventor Subhadeep SAHA

Subhadeep SAHA 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: 20230248420
    Abstract: A method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 10, 2023
    Inventors: Stephen J. Stamm, Purvishkumar H. Soni, Alyssa M. Sawyer, Subhadeep Saha, Jessica E. C. Olson
  • Patent number: 11642164
    Abstract: A method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: May 9, 2023
    Assignee: COVIDIEN LP
    Inventors: Stephen J. Stamm, Purvishkumar H. Soni, Alyssa M. Sawyer, Subhadeep Saha, Jessica E. C. Olson
  • Patent number: 11283095
    Abstract: The present invention to provide a highly proton conducting metal organic material constituting of phosphate ester based ligand immobilized via gelation with Fe3 ion in DMF which is used as conducting electrolyte in PEFMCs.
    Type: Grant
    Filed: April 19, 2020
    Date of Patent: March 22, 2022
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sreekumar Kurungot, Rahul Banerjee, Harshitha Barike Aiyappa, Subhadeep Saha, Pritish Wadge
  • Patent number: 11259864
    Abstract: An endoscopic bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly disposed at a distal end thereof having jaw members. A movable handle is pivotable relative to the housing from an initial position wherein the jaw members are spaced relative to one another to a compressed position wherein the jaw members are closed about tissue. A trigger assembly is pivotably coupled to the movable handle and includes a trigger operably coupled to a knife assembly having a knife, a knife drive bar and a cam pin. The trigger includes an elongated slot defined therein configured to house the cam pin for translation therein. Upon actuation of the movable handle, the trigger moves in unison with the movable handle to the compressed position and the cam pin rides within the elongated slot maintaining consistent angle between the movable handle and the trigger during movement thereof.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: March 1, 2022
    Assignee: COVIDIEN LP
    Inventors: Stephen J. Stamm, Subhadeep Saha, Purvishkumar H. Soni, Jessica E. C. Olson, Alyssa M. Sawyer
  • Publication number: 20220000542
    Abstract: A method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Inventors: STEPHEN J. STAMM, PURVISHKUMAR H. SONI, ALYSSA M. SAWYER, SUBHADEEP SAHA, JESSICA E.C. OLSON
  • Patent number: 11123133
    Abstract: A method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: September 21, 2021
    Assignee: Covidien LP
    Inventors: Stephen J. Stamm, Purvishkumar H. Soni, Alyssa M. Sawyer, Subhadeep Saha, Jessica E. C. Olson
  • Patent number: 11026710
    Abstract: A surgical instrument includes a housing having a movable handle operably coupled to the housing and movable relative thereto between an initial position and a compressed position. A trigger is operably coupled to the housing within a slot defined therein and movable relative to the housing and the movable handle between an un-actuated position and an actuated position. A flange is disposed on the trigger and configured to extend distally therefrom. The flange is dimensioned to cover the slot when the trigger is moved between the un-actuated and actuated positions to avoid creating a potential pinch point between the trigger and the slot.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: June 8, 2021
    Assignee: Covidien LP
    Inventors: Stephen J. Stamm, Subhadeep Saha, Purvishkumar H. Soni, Jessica E. C. Olson, Alyssa M. Sawyer
  • Publication number: 20210100607
    Abstract: A surgical instrument includes a housing having a rounded barrel with a distal end and proximal end configured to seat within a palm of a user. A shaft extends from the distal end of the barrel and supports an end effector at a distal end thereof including first and second jaw members. A rotating assembly is disposed on the barrel and is actuatable to rotate the jaw members. A jaw actuation assembly is disposed on the barrel and is actuatable to move the jaw members between open and closed positions. An energy activation assembly is disposed on the barrel and is actuatable to supply electrosurgical energy to the jaw members. A knife actuation assembly is disposed on the barrel and is actuatable to cut tissue disposed between the jaw members.
    Type: Application
    Filed: October 6, 2019
    Publication date: April 8, 2021
    Inventors: STEPHEN J. STAMM, SUBHADEEP SAHA, PURVISHKUMAR H. SONI, JESSICA E.C. OLSON, ALYSSA M. SAWYER
  • Publication number: 20200390488
    Abstract: A surgical instrument includes a housing having a barrel with distal and proximal end portions. The barrel includes a handle depending from a lower end thereof and a concave portion defined within and extending along an upper surface thereof from the proximal end portion of the barrel to the distal end portion of the barrel. A shaft extends from the distal end portion of the housing and supports an end effector assembly at a distal end thereof configured to treat tissue. The concave portion is configured to enhance visibility of the end effector assembly during tissue treatment.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 17, 2020
    Inventors: STEPHEN J. STAMM, SUBHADEEP SAHA, PURVISHKUMAR H. SONI, JESSICA E.C. OLSON, ALYSSA M. SAWYER
  • Publication number: 20200383720
    Abstract: An endoscopic bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly disposed at a distal end thereof having jaw members. A movable handle is pivotable relative to the housing from an initial position wherein the jaw members are spaced relative to one another to a compressed position wherein the jaw members are closed about tissue. A trigger assembly is pivotably coupled to the movable handle and includes a trigger operably coupled to a knife assembly having a knife, a knife drive bar and a cam pin. The trigger includes an elongated slot defined therein configured to house the cam pin for translation therein. Upon actuation of the movable handle, the trigger moves in unison with the movable handle to the compressed position and the cam pin rides within the elongated slot maintaining consistent angle between the movable handle and the trigger during movement thereof.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 10, 2020
    Inventors: STEPHEN J. STAMM, SUBHADEEP SAHA, PURVISHKUMAR H. SONI, JESSICA E.C. OLSON, ALYSSA M. SAWYER
  • Publication number: 20200321642
    Abstract: The present Invention to provide a highly proton conducting metal organic material constituting of phosphate ester based ligand immobilized via gelation with Fe3 ion in DMF which is used as conducting electrolyte in PEFMCs.
    Type: Application
    Filed: April 19, 2020
    Publication date: October 8, 2020
    Inventors: Sreekumar KURUNGOT, Rahul BANERJEE, Harshitha Barike AIYAPPA, Subhadeep SAHA, Pritish WADGE
  • Publication number: 20200222070
    Abstract: A surgical instrument includes a housing having a movable handle operably coupled to the housing and movable relative thereto between an initial position and a compressed position. A trigger is operably coupled to the housing within a slot defined therein and movable relative to the housing and the movable handle between an un-actuated position and an actuated position. A flange is disposed on the trigger and configured to extend distally therefrom. The flange is dimensioned to cover the slot when the trigger is moved between the un-actuated and actuated positions to avoid creating a potential pinch point between the trigger and the slot.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 16, 2020
    Inventors: STEPHEN J. STAMM, SUBHADEEP SAHA, PURVISHKUMAR H. SONI, JESSICA E.C. OLSON, ALYSSA M. SAWYER
  • Patent number: 10658690
    Abstract: The present invention to provide a highly proton conducting metal organic material constituting of phosphate ester based ligand immobilized via gelation with Fe3+ ion in DMF which is used as conducting electrolyte in PEFMCs.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: May 19, 2020
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sreekumar Kurungot, Rahul Banerjee, Harshitha Barike Aiyappa, Subhadeep Saha, Pritish Wadge
  • Publication number: 20190321094
    Abstract: A method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.
    Type: Application
    Filed: April 24, 2018
    Publication date: October 24, 2019
    Inventors: STEPHEN J. STAMM, PURVISHKUMAR H. SONI, ALYSSA M. SAWYER, SUBHADEEP SAHA, JESSICA E.C. OLSON
  • Publication number: 20170229725
    Abstract: The present invention to provide a highly proton conducting metal organic material constituting of phosphate ester based ligand immobilized via gelation with Fe3+ ion in DMF which is used as conducting electrolyte in PEFMCs.
    Type: Application
    Filed: August 12, 2015
    Publication date: August 10, 2017
    Inventors: SREEKUMAR KURUNGOT, Rahul BANERJEE, Harshitha Barike AIYAPPA, Subhadeep SAHA, Pritish WADGE