Patents by Inventor Gregory Burgreen
Gregory Burgreen 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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Patent number: 11918727Abstract: An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment. The system further includes a fiber bundle with a plurality of hollow gas permeable fibers extending generally perpendicular to the direction of bulk flow of blood through the fiber bundle compartment from the flow channel to the blood flow outlet.Type: GrantFiled: May 24, 2021Date of Patent: March 5, 2024Assignees: University of Pittsburgh—Of the Commonwealth System of Higher Education, Carnegie Mellon University, Mississippi State UniversityInventors: Shalv Madhani, Brian Joseph Frankowski, William J. Federspiel, Gregory Burgreen, James F. Antaki
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Publication number: 20220080095Abstract: A system for lung assist includes a plurality of fiber bundle sections. Each of the fiber bundle sections includes a fiber bundle housing defining a fiber bundle compartment therein and a fiber bundle positioned within the fiber bundle compartment. The fiber bundle includes a plurality of hollow gas permeable fibers configured to permit diffusion of gas between blood and an interior of the plurality of hollow gas permeable fibers. The plurality of hollow gas permeable fibers is positioned such that blood flows around the plurality of hollow gas permeable fibers when flowing through the fiber bundle compartment. Each fiber bundle is different in at least one property from each other fiber bundle.Type: ApplicationFiled: January 15, 2019Publication date: March 17, 2022Inventors: William J. Federspiel, Shalv Madhani, Ryan A. Orizondo, Peter Drew Wearden, Brian Joseph Frankowski, Alexandra May, Gregory Burgreen
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Publication number: 20210283324Abstract: An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment for pressurizing blood entering the pressurizing stator compartment from the blood flow inlet. The system further includes a fiber bundle positioned within the fiber bundle compartment. The fiber bundle includes a plurality of hollow gas permeable fibers. The plurality of hollow gas permeable fibers is adapted to permit diffusion of gas between blood and an interior of the hollow gas permeable fibers. The plurality of hollow gas permeable fibers is positioned such that blood flows around the plurality of hollow gas permeable fibers when flowing through the fiber bundle compartment.Type: ApplicationFiled: May 24, 2021Publication date: September 16, 2021Inventors: Shalv Madhani, Brian Joseph Frankowski, William J. Federspiel, Gregory Burgreen, James F. Antaki
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Patent number: 11045597Abstract: An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment. The system further includes a fiber bundle within the fiber bundle compartment. A plurality of hollow gas permeable fibers of the fiber bundle extend generally perpendicular to the direction of bulk flow of blood through the fiber bundle compartment from the flow channel to the blood flow outlet.Type: GrantFiled: June 23, 2016Date of Patent: June 29, 2021Assignees: University of Pittsburgh—Of the Commonwealth System of Higher Education, Carnegie Mellon University, Mississippi State UniversityInventors: Shalv Madhani, Brian Joseph Frankowski, William J. Federspiel, Gregory Burgreen, James F. Antaki
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Publication number: 20210077706Abstract: A system for lung assist includes a plurality of fiber bundle sections which includes a fiber bundle housing defining a fiber bundle compartment with a fiber bundle positioned within. The fiber bundle includes a plurality of hollow gas permeable fibers. The fiber bundle housing further includes a gas inlet in fluid connection with the fiber bundle housing and in fluid connection with inlets of the plurality of hollow gas permeable fibers, a gas outlet in fluid connection with the housing and in fluid connection with outlets of the plurality of hollow gas permeable fibers, and a blood outlet in fluid connection with a first end of the fiber bundle. The system further includes a base section including a housing including a pressurizing compartment, a pressurizing mechanism within the pressurizing compartment, a blood inlet in fluid connection with the pressurizing compartment and a conduit.Type: ApplicationFiled: January 15, 2019Publication date: March 18, 2021Applicants: University of Pittsburgh - Of theCommonwealth System of Higher Education, Mississippi State UniversityInventors: William J. Federspiel, Shalv Madhani, Ryan A. Orizondo, Peter Drew Wearden, Brian Joseph Frankowski, Alexandra May, Gregory Burgreen
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Publication number: 20180353673Abstract: An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment for pressurizing blood entering the pressurizing stator compartment from the blood flow inlet. The system further includes a fiber bundle positioned within the fiber bundle compartment. The fiber bundle includes a plurality of hollow gas permeable fibers. The plurality of hollow gas permeable fibers is adapted to permit diffusion of gas between blood and an interior of the hollow gas permeable fibers. The plurality of hollow gas permeable fibers is positioned such that blood flows around the plurality of hollow gas permeable fibers when flowing through the fiber bundle compartment.Type: ApplicationFiled: June 23, 2016Publication date: December 13, 2018Inventors: Shalv Madhani, Brian Joseph Frankowski, William J. Federspiel, Gregory Burgreen, James F. Antaki
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Publication number: 20180185567Abstract: An extracorporeal system for lung assist includes a housing which includes a blood flow inlet in fluid connection with a pressurizing stator compartment, a fiber bundle compartment in fluid connection with the pressurizing stator compartment via a flow channel within the housing, and a blood flow outlet in fluid connection with the fiber bundle compartment. An impeller is rotatably positioned within the pressurizing compartment for pressurizing blood entering the pressurizing stator compartment from the blood flow inlet. The system further includes a fiber bundle positioned within the fiber bundle compartment. The fiber bundle includes a plurality of hollow gas permeable fibers. The plurality of hollow gas permeable fibers is adapted to permit diffusion of gas between blood and an interior of the hollow gas permeable fibers. The plurality of hollow gas permeable fibers is positioned such that blood flows around the plurality of hollow gas permeable fibers when flowing through the fiber bundle compartment.Type: ApplicationFiled: June 23, 2016Publication date: July 5, 2018Inventors: Shalv Madhani, Brian Joseph Frankowski, William J. Federspiel, Gregory Burgreen, James F. Antaki
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Patent number: 6447265Abstract: A rotary pump for pumping fluids through a patient having a housing with an internal region, a stator member and an impeller positioned within the housing and having impeller blades, wherein the impeller is magnetically suspended and rotated, and wherein the geometric configuration of the rotary pump is sized and proportioned to minimize stagnant and traumatic fluid flow within the rotary pump. The plurality of magnetic impeller blades are preferably rare earth, high-energy-density magnets selected from the group consisting of samarium cobalt and neodymium-iron-boron alloy.Type: GrantFiled: September 20, 1999Date of Patent: September 10, 2002Assignees: The University of Pittsburgh, The United States of America as represented by the United States National Aeronautics and Space AdministrationInventors: James F. Antaki, Bradley Paden, Gregory Burgreen, Nelson Groom
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Patent number: 6447266Abstract: A blood pump preferably has a magnetically suspended rotor that rotates within a housing. The rotor may rotate about a stator disposed within the housing. Radial magnetic bearings may be defined within the stator and the rotor in order to suspend the rotor. The radial magnetic bearings may be passive magnetic bearings that include permanent magnets disposed within the stator and the rotor or active magnetic bearings. The pump may further include an axial magnetic bearing that may be either a passive or an active magnetic bearing. A motor that drives the rotor may be disposed within the housing in order to more easily dissipate heat generated by the motor. A primary flow path is defined between the rotor and the stator, and a secondary flow path is defined between the stator and the rotor. Preferably, a substantial majority of blood passes through the primary flow path.Type: GrantFiled: April 24, 2001Date of Patent: September 10, 2002Assignees: University of Pittsburgh, The United States of America as represented by the United States National Aeronautics and Space AdministrationInventors: James F. Antaki, Bradley Paden, Gregory Burgreen, Nelson J. Groom
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Publication number: 20010031210Abstract: A blood pump preferably has a magnetically suspended rotor that rotates within a housing. The rotor may rotate about a stator disposed within the housing. Radial magnetic bearings may be defined within the stator and the rotor in order to suspend the rotor. The radial magnetic bearings may be passive magnetic bearings that include permanent magnets disposed within the stator and the rotor or active magnetic bearings. The pump may further include an axial magnetic bearing that may be either a passive or an active magnetic bearing. A motor that drives the rotor may be disposed within the housing in order to more easily dissipate heat generated by the motor. A primary flow path is defined between the rotor and the stator, and a secondary flow path is defined between the stator and the rotor. Preferably, a substantial majority of blood passes through the primary flow path.Type: ApplicationFiled: April 24, 2001Publication date: October 18, 2001Inventors: James F. Antaki, Bradley Paden, Gregory Burgreen, Nelson J. Groom
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Patent number: 6244835Abstract: A blood pump preferably has a magnetically suspended rotor that rotates within a housing. The rotor may rotate about a stator disposed within the housing. Radial magnetic bearings may be defined within the stator and the rotor in order to suspend the rotor. The radial magnetic bearings may be passive magnetic bearings that include permanent magnets disposed within the stator and the rotor or active magnetic bearings. The pump may further include an axial magnetic bearing that may be either a passive or an active magnetic bearing. A motor that drives the rotor may be disposed within the housing in order to more easily dissipate heat generated by the motor. A primary flow path is defined between the rotor and the stator, and a secondary flow path is defined between the stator and the rotor. Preferably, a substantial majority of blood passes through the primary flow path.Type: GrantFiled: July 19, 1999Date of Patent: June 12, 2001Inventors: James F. Antaki, Bradley Paden, Gregory Burgreen, Nelson J. Groom
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Patent number: 6015272Abstract: A rotary pump for pumping fluids through a patient having a housing with an internal region, a stator member and an impeller positioned within the housing and having impeller blades, wherein the impeller is magnetically suspended and rotated, and wherein the geometric configuration of the rotary pump is sized and proportioned to minimize stagnant and traumatic fluid flow within the rotary pump. The plurality of magnetic impeller blades are preferably rare earth, high-energy-density magnets selected from the group consisting of samarium cobalt and neodymium-iron-boron alloy.Type: GrantFiled: June 26, 1996Date of Patent: January 18, 2000Assignees: University of Pittsburgh, The United States of America as represented by Administrator of the National Aeronautics and Space AdministrationInventors: James F. Antaki, Bradley Paden, Gregory Burgreen, Nelson Groom