Patents by Inventor Philip Litwak
Philip Litwak 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: 7122151Abstract: A combination mass transfer and pump apparatus, which in a single step actively mixes a first mass and a second mass and simultaneously pumps one of the first mass and the second mass through the apparatus. The combination mass transfer and pump apparatus substantially comprises a housing and at least one distributor element having a plurality of selectively fluid-permeable membrane elements wherein the at least one distributor element is agitated within the second mass such that the first mass diffuses across the selectively fluid-permeable membrane elements, mixing with the second mass, and in the same step the second mass is pumped through the housing.Type: GrantFiled: April 19, 2004Date of Patent: October 17, 2006Assignee: University of PittsburghInventors: Gary D. Reeder, Mark J. Gartner, Harvey S. Borovetz, Philip Litwak
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Patent number: 6929777Abstract: A fluid pump used to circulate and oxygenate blood, the fluid pump having an electrical or pneumatic motor having a motor shaft, a gas exchange assembly connected to one end of the motor shaft, and a hollow venturi that defines a venturi inlet opening, a venturi exhaust opening, and a venturi suction opening, wherein the venturi suction opening is fluidly connected to the gas exchange assembly to aspirate carbon dioxide rich gas.Type: GrantFiled: July 26, 2002Date of Patent: August 16, 2005Assignee: Ension, Inc.Inventors: Philip Litwak, Mark J. Gartner
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Publication number: 20040219061Abstract: A combination mass transfer and pump apparatus, which in a single step actively mixes a first mass and a second mass and simultaneously pumps one of the first mass and the second mass through the apparatus. The combination mass transfer and pump apparatus substantially comprises a housing and at least one distributor element having a plurality of selectively fluid-permeable membrane elements wherein the at least one distributor element is agitated within the second mass such that the first mass diffuses across the selectively fluid-permeable membrane elements, mixing with the second mass, and in the same step the second mass is pumped through the housing.Type: ApplicationFiled: April 19, 2004Publication date: November 4, 2004Applicant: University of PittsburghInventors: Gary D. Reeder, Mark J. Gartner, Harvey S. Borovetz, Philip Litwak
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Patent number: 6723284Abstract: A combination mass transfer and pump apparatus, which in a single step actively mixes a first mass and a second mass and simultaneously pumps one of the first mass and the second mass through the apparatus. The combination mass transfer and pump apparatus substantially comprises a housing and at least one distributor element having a plurality of selectively fluid-permeable membrane elements wherein the at least one distributor element is agitated within the second mass such that the first mass diffuses across the selectively fluid-permeable membrane elements, mixing with the second mass, and in the same step the second mass is pumped through the housing.Type: GrantFiled: November 6, 2000Date of Patent: April 20, 2004Assignee: University of PittsburghInventors: Gary D. Reeder, Mark J. Gartner, Harvey S. Borovetz, Philip Litwak
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Patent number: 6348175Abstract: A blood membrane oxygenator having a housing defining a blood flow path, a rotor hub in the form of a double lumen shaft, and a plurality of distributor disks each having a plurality of hollow fibers which extend across the housing blood flow path. The plurality of distributor disks rotate within the housing to mix the blood resulting in three-dimensional mixing, disruption of the blood boundary layer and efficient blood oxygenation.Type: GrantFiled: October 5, 1999Date of Patent: February 19, 2002Assignee: University of PittsburghInventors: Harvey S. Borovetz, Philip Litwak, Mark Gartner, Gary D. Reeder, Patricia Sawzik
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Patent number: 6217826Abstract: A combination mass transfer and pump apparatus, which in a single step actively mixes a first mass and a second mass and simultaneously pumps one of the first mass and the second mass through the apparatus. The combination mass transfer and pump apparatus substantially comprises a housing and at least one distributor element having a plurality of selectively fluid-permeable membrane elements wherein the at least one distributor element is agitated within the second mass such that the first mass diffuses across the selectively fluid-permeable membrane elements, mixing with the second mass, and in the same step the second mass is pumped through the housing.Type: GrantFiled: September 21, 1998Date of Patent: April 17, 2001Assignee: University of PittsburghInventors: Gary D. Reeder, Mark J. Gartner, Harvey S. Borovetz, Philip Litwak
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Patent number: 6106776Abstract: A blood membrane oxygenator has a housing defining a blood flow path, a rotor hub in the form of a double lumen shaft, and a plurality of distributor disks each having a plurality of hollow fibers which extend across the housing blood flow path. The plurality of distributor disks rotate within the housing to mix the blood resulting in three-dimensional mixing, disruption of the blood boundary layer and efficient blood oxygenation.Type: GrantFiled: April 11, 1997Date of Patent: August 22, 2000Assignee: University of PittsburghInventors: Harvey S. Borovetz, Philip Litwak, Mark Gartner, Gary D. Reeder, Patricia Sawzik
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Patent number: 5984857Abstract: This invention provides a simple skeletal muscle linear pull energy convertor which can harness the maximal amount of muscle power for a wide variety of implantable medical devices, including the full range of circulatory support devices. The muscle powered system provides completely implantable circulatory support as an alternative to cardiac transplantation, with a quality of life relatively free from external batteries, transcutaneous energy transmission and other electromechanical hardware.Type: GrantFiled: August 29, 1994Date of Patent: November 16, 1999Assignee: Thoratec Laboratories CorporationInventors: Keith Evan Buck, David John Farrar, Robert Joseph Harvey, Philip Litwak, John Robert Rueff
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Patent number: 5701919Abstract: This invention provides a simple skeletal muscle linear pull energy convertor which can harness the maximal amount of muscle power for a wide variety of implantable medical devices, including the full range of circulatory support devices. The muscle powered system provides completely implantable circulatory support as an alternative to cardiac transplantation, with a quality of life relatively free from external batteries, transcutaneous energy transmission and other electromechanical hardware.Type: GrantFiled: June 7, 1995Date of Patent: December 30, 1997Assignee: Thoratec Laboratories CorporationInventors: Keith Evan Buck, David John Farrar, Robert Joseph Harvey, Philip Litwak, John Robert Rueff
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Patent number: 5653676Abstract: This invention provides a simple skeletal muscle linear pull energy convertor which can harness the maximal amount of muscle power for a wide variety of implantable medical devices, including the full range of circulatory support devices. The muscle powered system provides completely implantable circulatory support as an alternative to cardiac transplantation, with a quality of life relatively free from external batteries, transcutaneous energy transmission and other electromechanical hardware.Type: GrantFiled: June 7, 1995Date of Patent: August 5, 1997Assignee: Thoratec Laboratories CorporationInventors: Keith Evan Buck, David John Farrar, Robert Joseph Harvey, Philip Litwak, John Robert Rueff
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Patent number: 5344385Abstract: This invention provides a simple skeletal muscle linear pull energy convertor which can harness the maximal amount of muscle power for a wide variety of implantable medical devices, including the full range of circulatory support devices. The muscle powered system provides completely implantable circulatory support as an alternative to cardiac transplantation, with a quality of life relatively free from external batteries, transcutaneous energy transmission and other electromechanical hardware.Type: GrantFiled: September 30, 1991Date of Patent: September 6, 1994Assignee: Thoratec Laboratories CorporationInventors: Keith E. Buck, David J. Farrar, Robert J. Harvey, Philip Litwak, John R. Rueff
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Patent number: 4430998Abstract: A closure band of water-vapor permeable, flexible, elastic plastic spans a cut in the flesh and holds the cut closed. Flesh-engaging penetrants such as hooks are partly embedded in or are part of the band and engage the flesh either side of the cut. Adhesive on the band also contacts the flesh and helps hold the penetrants embedded. A tear strip overlying openings through the band, when removed, allows inspection of the cut.Type: GrantFiled: June 1, 1982Date of Patent: February 14, 1984Assignee: Thoratec Laboratories CorporationInventors: Robert J. Harvey, Philip Litwak, William A. Ribich, John M. Dubowik