Patents by Inventor Rajen Kumar

Rajen 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).

  • Publication number: 20210252199
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter module arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during distal piston translation from a first position to a second position, thereby drawing a fluid, such as blood, through the filter module into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body. The filter module may include a filter housing, a filter medium disposed within the housing, and a body valve configured to seal an open distal face of the filter housing.
    Type: Application
    Filed: May 3, 2021
    Publication date: August 19, 2021
    Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
  • Patent number: 10994063
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter module arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during distal piston translation from a first position to a second position, thereby drawing a fluid, such as blood, through the filter module into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body. The filter module may include a filter housing, a filter medium disposed within the housing, and a body valve configured to seal an open distal face of the filter housing.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: May 4, 2021
    Assignee: Sisu Global Health, Inc.
    Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
  • Publication number: 20190167871
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter module arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during distal piston translation from a first position to a second position, thereby drawing a fluid, such as blood, through the filter module into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body. The filter module may include a filter housing, a filter medium disposed within the housing, and a body valve configured to seal an open distal face of the filter housing.
    Type: Application
    Filed: February 4, 2019
    Publication date: June 6, 2019
    Applicant: Sisu Global Health, Inc.
    Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
  • Patent number: 10226367
    Abstract: Methods and apparatus are disclosed for filling a therapeutic substance or drug within a hollow wire that forms a stent. The stent is placed within a chamber housing a fluid drug formulation. During filling, the chamber is maintained at or near the vapor-liquid equilibrium of the solvent of the fluid drug formulation. To fill the stent, at least a portion of the stent is placed into contact with the fluid drug formulation until a lumenal space defined by the hollow wire is at least partially filled with the fluid drug formulation via capillary action. After filling is complete, the stent is retracted such that the stent is no longer in contact with the fluid drug formulation. The solvent vapor pressure within the chamber is reduced to evaporate a solvent of the fluid drug formulation. A wicking means may control transfer of the fluid drug formulation into the stent.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: March 12, 2019
    Assignee: MEDTRONIC VASCULAR, INC.
    Inventors: Justin Peterson, James Mitchell, Abby S. Pandya, Nathanael Glucklich, Justin Goshgarian, Rajen Kumar, Andrew Czyzowski
  • Patent number: 10195320
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter module arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during distal piston translation from a first position to a second position, thereby drawing a fluid, such as blood, through the filter module into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body. The filter module may include a filter housing, a filter medium disposed within the housing, and a body valve configured to seal an open distal face of the filter housing.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: February 5, 2019
    Assignee: Sisu Global Health, Inc.
    Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
  • Publication number: 20180168834
    Abstract: Methods and apparatus are disclosed for filling a therapeutic substance or drug within a hollow wire that forms a stent. The stent is placed within a chamber housing a fluid drug formulation. During filling, the chamber is maintained at or near the vapor-liquid equilibrium of the solvent of the fluid drug formulation. To fill the stent, at least a portion of the stent is placed into contact with the fluid drug formulation until a lumenal space defined by the hollow wire is at least partially filled with the fluid drug formulation via capillary action. After filling is complete, the stent is retracted such that the stent is no longer in contact with the fluid drug formulation. The solvent vapor pressure within the chamber is reduced to evaporate a solvent of the fluid drug formulation. A wicking means may control transfer of the fluid drug formulation into the stent.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 21, 2018
    Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nathanael Glucklich, Justin Goshgarian, Rajen Kumar, Andrew Czyzowski
  • Patent number: 9867722
    Abstract: Methods and apparatus are disclosed for filling a therapeutic substance or drug within a hollow wire that forms a stent. The stent is placed within a chamber housing a fluid drug formulation. During filling, the chamber is maintained at or near the vapor-liquid equilibrium of the solvent of the fluid drug formulation. To fill the stent, a portion of the stent is placed into contact with the fluid drug formulation until a lumenal space defined by the hollow wire is filled with the fluid drug formulation via capillary action. After filling is complete, the stent is retracted such that the stent is no longer in contact with the fluid drug formulation. The solvent vapor pressure within the chamber is reduced to evaporate a solvent of the fluid drug formulation. A wicking means may control transfer of the fluid drug formulation into the stent.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 16, 2018
    Assignee: Medtronic Vascular, Inc.
    Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nathanael Glucklich, Joseph Traina, Rajen Kumar
  • Publication number: 20160151550
    Abstract: An apparatus including a hollow body, an inlet fluidly coupled to the hollow body, a piston slidably engaged within the hollow body, and a filter module arranged within the hollow body between the inlet and piston. The piston and hollow body cooperatively generate a negative pressure, relative to ambient, within the hollow body during distal piston translation from a first position to a second position, thereby drawing a fluid, such as blood, through the filter module into the hollow body. The piston and hollow body cooperatively generate a positive pressure, relative to ambient, within the hollow body during piston translation from the second position to the first position to egress the filtered fluid from the hollow body. The filter module may include a filter housing, a filter medium disposed within the housing, and a body valve configured to seal an open distal face of the filter housing.
    Type: Application
    Filed: February 8, 2016
    Publication date: June 2, 2016
    Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
  • Publication number: 20160120666
    Abstract: Methods and apparatus are disclosed for filling a therapeutic substance or drug within a hollow wire that forms a stent. The stent is placed within a chamber housing a fluid drug formulation. During filling, the chamber is maintained at or near the vapor-liquid equilibrium of the solvent of the fluid drug formulation. To fill the stent, a portion of the stent is placed into contact with the fluid drug formulation until a lumenal space defined by the hollow wire is filled with the fluid drug formulation via capillary action. After filling is complete, the stent is retracted such that the stent is no longer in contact with the fluid drug formulation. The solvent vapor pressure within the chamber is reduced to evaporate a solvent of the fluid drug formulation. A wicking means may control transfer of the fluid drug formulation into the stent.
    Type: Application
    Filed: October 29, 2015
    Publication date: May 5, 2016
    Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nathanael Glucklich, Joseph Traina, Rajen Kumar
  • Patent number: 9204982
    Abstract: Methods and apparatus are disclosed for filling a therapeutic substance or drug within a hollow wire that forms a stent. The stent is placed within a chamber housing a fluid drug formulation. During filling, the chamber is maintained at or near the vapor-liquid equilibrium of the solvent of the fluid drug formulation. To fill the stent, a portion of the stent is placed into contact with the fluid drug formulation until a lumenal space defined by the hollow wire is filled with the fluid drug formulation via capillary action. After filling is complete, the stent is retracted such that the stent is no longer in contact with the fluid drug formulation. The solvent vapor pressure within the chamber is reduced to evaporate a solvent of the fluid drug formulation. A wicking means may control transfer of the fluid drug formulation into the stent.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 8, 2015
    Assignee: Medtronic Vascular, Inc.
    Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nate Glucklich, Joe Traina, Rajen Kumar
  • Publication number: 20130284311
    Abstract: Methods and apparatus are disclosed for filling a therapeutic substance or drug within a hollow wire that forms a stent. The stent is placed within a chamber housing a fluid drug formulation. During filling, the chamber is maintained at or near the vapor-liquid equilibrium of the solvent of the fluid drug formulation. To fill the stent, a portion of the stent is placed into contact with the fluid drug formulation until a lumenal space defined by the hollow wire is filled with the fluid drug formulation via capillary action. After filling is complete, the stent is retracted such that the stent is no longer in contact with the fluid drug formulation. The solvent vapor pressure within the chamber is reduced to evaporate a solvent of the fluid drug formulation. A wicking means may control transfer of the fluid drug formulation into the stent.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Applicant: Medtronic Vascular, Inc.
    Inventors: Justin PETERSON, James Mitchell, Abby Schlichting, Nate Glucklich, Jose Traina, Rajen Kumar