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).
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Publication number: 20210252199Abstract: 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: ApplicationFiled: May 3, 2021Publication date: August 19, 2021Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
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Patent number: 10994063Abstract: 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: GrantFiled: February 4, 2019Date of Patent: May 4, 2021Assignee: Sisu Global Health, Inc.Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
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Publication number: 20190167871Abstract: 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: ApplicationFiled: February 4, 2019Publication date: June 6, 2019Applicant: Sisu Global Health, Inc.Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
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Patent number: 10226367Abstract: 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: GrantFiled: December 19, 2016Date of Patent: March 12, 2019Assignee: MEDTRONIC VASCULAR, INC.Inventors: Justin Peterson, James Mitchell, Abby S. Pandya, Nathanael Glucklich, Justin Goshgarian, Rajen Kumar, Andrew Czyzowski
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Patent number: 10195320Abstract: 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: GrantFiled: February 8, 2016Date of Patent: February 5, 2019Assignee: Sisu Global Health, Inc.Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
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Publication number: 20180168834Abstract: 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: ApplicationFiled: December 19, 2016Publication date: June 21, 2018Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nathanael Glucklich, Justin Goshgarian, Rajen Kumar, Andrew Czyzowski
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Patent number: 9867722Abstract: 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: GrantFiled: October 29, 2015Date of Patent: January 16, 2018Assignee: Medtronic Vascular, Inc.Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nathanael Glucklich, Joseph Traina, Rajen Kumar
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Publication number: 20160151550Abstract: 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: ApplicationFiled: February 8, 2016Publication date: June 2, 2016Inventors: Theresa Fisher, Gene Parunak, Rick Routson, Steve Meines, Gillian Henker, Caitlin Winget, Rajen Kumar
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Publication number: 20160120666Abstract: 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: ApplicationFiled: October 29, 2015Publication date: May 5, 2016Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nathanael Glucklich, Joseph Traina, Rajen Kumar
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Patent number: 9204982Abstract: 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: GrantFiled: April 26, 2012Date of Patent: December 8, 2015Assignee: Medtronic Vascular, Inc.Inventors: Justin Peterson, James Mitchell, Abby Schlichting, Nate Glucklich, Joe Traina, Rajen Kumar
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Publication number: 20130284311Abstract: 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: ApplicationFiled: April 26, 2012Publication date: October 31, 2013Applicant: Medtronic Vascular, Inc.Inventors: Justin PETERSON, James Mitchell, Abby Schlichting, Nate Glucklich, Jose Traina, Rajen Kumar