Patents by Inventor Steven K. Stringer
Steven K. Stringer 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: 20220160499Abstract: Tricuspid valve repair devices and associated systems and methods are disclosed herein. A tricuspid valve repair device configured in accordance with embodiments of the present technology can include, for example, a coaptation member configured to be positioned between one or more native leaflets of the tricuspid valve to at least partially fill a space between the native leaflets. The tricuspid valve repair device can further include one or more fixation mechanisms for securing the coaptation member in position between the leaflets. The fixation mechanisms can include clip mechanisms, lock mechanisms, stabilization members, anchors, and/or other structures configured to engage cardiac anatomy local to or remote from the tricuspid valve, such as the native leaflets, the tricuspid valve annulus, the right ventricular outflow tract, the superior vena cava, the inferior vena cava, and so on.Type: ApplicationFiled: November 22, 2021Publication date: May 26, 2022Inventors: Katherine Miyashiro, Hanson S. Gifford, III, James I. Fann, Ben F. Brian, III, Gaurav Krishnamurthy, Jose Gonzalez, Paul Gunning, Matthew McLean, Neil Zimmerman, Robert O'Grady, Douglas S. Sutton, Steven K. Stringer
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Patent number: 7541000Abstract: Apparatus and methods for pumping and oxygenating blood are provided that include a gas removal system. An integrated blood processing unit is provided in which a gas removal/blood filter, pump and blood oxygenation element are mounted within a common housing. The gas removal system includes a sensor mounted on the housing to sense the presence of gas, and a valve is operably coupled to the sensor to evacuate gas from the system when the sensor detects an accumulation of gas.Type: GrantFiled: September 26, 2005Date of Patent: June 2, 2009Assignee: Cardiovention, Inc.Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Ben F. Brian, III, Fred I. Linker, James M. Culp, Jean-Pierre Dueri, Thomas A. Afzal
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Patent number: 7291124Abstract: A tubing set for use with a blood handling system is described that decreases the priming volume and surface area of the blood handling circuit, lowering the risk of hemodilution, platelet activation, and hemolysis. The tubing set also reduces the number of manual connections required, and uses quick-disconnect couplings to facilitate connections between the various lines, and between the lines and the arterial and venous cannulae.Type: GrantFiled: May 6, 2005Date of Patent: November 6, 2007Assignee: Cardiovention, Inc.Inventors: Thomas A. Rawles, A. Kenneth Litzie, David M. Fallen, Steven K. Stringer
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Patent number: 7022284Abstract: Apparatus for oxygenating and pumping blood includes a housing defining a blood flow path including, in series, a gas collection plenum, a pump space and a blood oxygenation element. A pump disposed in the pump space is configured to draw blood from the gas collection plenum and propel blood from the pump space through a heat exchanger and the blood oxygenation element. The heat exchanger includes a heat exchange plate and a coolant space.Type: GrantFiled: May 9, 2003Date of Patent: April 4, 2006Assignee: Cardiovention, Inc.Inventors: Ben F. Brian, John Thomas Buckley, Jean-Pierre Dueri, Mehrdad Farhangnia, Steven K. Stringer
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Patent number: 7022099Abstract: Apparatus for processing blood in an extracorporeal circuit with automatic flow control is provided in which error conditions are sensed and system operation is modulated responsive to the error conditions. The apparatus includes an extracorporeal blood processing system, at least one sensor that senses the presence or absence of gas or monitors venous pressure, and a controller operably coupled to the blood processing system to selectively reduce pump speed or to reconfigure flow paths within the blood processing system responsive to the sensor output.Type: GrantFiled: March 17, 2003Date of Patent: April 4, 2006Assignee: Cardiovention, Inc.Inventors: A. Kenneth Litzie, Steven K. Stringer, Mehrdad Farhangnia, Muslim Tyebjee, Thomas A. Afzal, Ben F. Brian, III
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Patent number: 6960322Abstract: Apparatus and methods for pumping and oxygenating blood are provided that include a gas removal system. An integrated blood processing unit is provided in which a gas removal/blood filter, pump and blood oxygenation element are mounted within a common housing. The gas removal system includes a sensor mounted on the housing to sense the presence of gas, and a valve is operably coupled to the sensor to evacuate gas from the system when the sensor detects an accumulation of gas.Type: GrantFiled: July 8, 2003Date of Patent: November 1, 2005Assignee: Cardiovention, Inc.Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Ben F. Brian, III, Fred I. Linker, James M. Culp, Jean-Pierre Dueri, Thomas A. Afzal
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Patent number: 6890316Abstract: A tubing set for use with a blood handling system is described that decreases the priming volume and surface area of the blood handling circuit, lowering the risk of hemodilution, platelet activation, and hemolysis. The tubing set also reduces the number of manual connections required, and uses quick-disconnect couplings to facilitate connections between the various lines, and between the lines and the arterial and venous cannulae.Type: GrantFiled: April 25, 2002Date of Patent: May 10, 2005Assignee: Cardiovention, Inc.Inventors: Thomas A. Rawles, A. Kenneth Litzie, David M. Fallen, Steven K. Stringer
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Publication number: 20040228760Abstract: Apparatus and methods for removing gas from a blood handling system. A filter apparatus for monitoring and removing gas is provided comprising of a gas removal/blood filter, a sensor to sense the presence of gas, and a valve operably coupled to the sensor to evacuate gas from the apparatus when the sensor detects an accumulation of gas. When used with a previously known blood handling system, the present filter apparatus facilitates priming and the addition of additional blood handling elements during operation of the blood handling system.Type: ApplicationFiled: June 21, 2004Publication date: November 18, 2004Applicant: Cardiovention, Inc.Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Fred I. Linker, Ben F. Brian
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Publication number: 20040223872Abstract: Apparatus for oxygenating and pumping blood includes a housing defining a blood flow path including, in series, a gas collection plenum, a pump space and a blood oxygenation element. A pump disposed in the pump space is configured to draw blood from the gas collection plenum and propel blood from the pump space through a heat exchanger and the blood oxygenation element. The heat exchanger includes a heat exchange plate and a coolant space.Type: ApplicationFiled: May 9, 2003Publication date: November 11, 2004Inventors: Ben F. Brian, John Thomas Buckley, Jean-Pierre Dueri, Mehrdad Farhangnia, Steven K. Stringer
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Publication number: 20040184953Abstract: Apparatus for processing blood in an extracorporeal circuit with automatic flow control is provided in which error conditions are sensed and system operation is modulated responsive to the error conditions. The apparatus comprises an extracorporeal blood processing system, at least one sensor to sense the presence of gas or to monitor venous pressure, and a controller operably coupled to the blood processing system to selectively reduce pump speed or reconfigure flow paths the blood processing system responsive to the sensor output.Type: ApplicationFiled: March 17, 2003Publication date: September 23, 2004Inventors: A. Kenneth Litzie, Steven K. Stringer, Mehrdad Farhangnia, Muslim Tyebjee, Thomas A. Afzal, Ben F. Brian
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Patent number: 6773670Abstract: Apparatus and methods for removing gas from a blood handling system. A filter apparatus for monitoring and removing gas is provided comprising of a gas removal/blood filter, a sensor to sense the presence of gas, and a valve operably coupled to the sensor to evacuate gas from the apparatus when the sensor detects an accumulation of gas. When used with a previously known blood handling system, the present filter apparatus facilitates priming and the addition of additional blood handling elements during operation of the blood handling system.Type: GrantFiled: February 5, 2002Date of Patent: August 10, 2004Assignee: CardioVention, Inc. c/o The Brenner Group, Inc.Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Fred I. Linker, Ben F. Brian, III
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Patent number: 6730267Abstract: Apparatus and methods for pumping and oxygenating blood are provided that include a gas removal system. An integrated blood processing unit is provided in which a gas removal/blood filter, pump and blood oxygenation element are mounted within a common housing. The gas removal system includes a sensor mounted on the housing to sense the presence of gas, and a valve is operably coupled to the sensor to evacuate gas from the system when the sensor detects an accumulation of gas.Type: GrantFiled: February 9, 2001Date of Patent: May 4, 2004Assignee: Cardiovention, Inc.Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Ben F. Brian, III, Fred I. Linker, James M. Culp, Jean-Pierre Dueri, Thomas A. Afzal
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Publication number: 20040009097Abstract: Apparatus and methods for pumping and oxygenating blood are provided that include a gas removal system. An integrated blood processing unit is provided in which a gas removal/blood filter, pump and blood oxygenation element are mounted within a common housing. The gas removal system includes a sensor mounted on the housing to sense the presence of gas, and a valve is operably coupled to the sensor to evacuate gas from the system when the sensor detects an accumulation of gas.Type: ApplicationFiled: July 8, 2003Publication date: January 15, 2004Applicant: CardioVention, Inc.Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Ben F. Brian, Fred I. Linker, James M. Culp, Jean-Pierre Dueri, Thomas A. Afzal
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Publication number: 20030204127Abstract: A tubing set for use with a blood handling system is described that decreases the priming volume and surface area of the blood handling circuit, lowering the risk of hemodilution, platelet activation, and hemolysis. The tubing set also reduces the number of manual connections required, and uses quick-disconnect couplings to facilitate connections between the various lines, and between the lines and the arterial and venous cannulae.Type: ApplicationFiled: April 25, 2002Publication date: October 30, 2003Inventors: Thomas A. Rawles, A. Kenneth Litzie, David M. Fallen, Steven K. Stringer
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Publication number: 20020114731Abstract: Apparatus and methods for removing gas from a blood handling system. A filter apparatus for monitoring and removing gas is provided comprising of a gas removal/blood filter, a sensor to sense the presence of gas, and a valve operably coupled to the sensor to evacuate gas from the apparatus when the sensor detects an accumulation of gas. When used with a previously known blood handling system, the present filter apparatus facilitates priming and the addition of additional blood handling elements during operation of the blood handling system.Type: ApplicationFiled: February 5, 2002Publication date: August 22, 2002Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Fred I. Linker, Ben F. Brian
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Publication number: 20020110485Abstract: Apparatus and methods for pumping and oxygenating blood are provided that include a gas removal system. An integrated blood processing unit is provided in which a gas removal/blood filter, pump and blood oxygenation element are mounted within a common housing. The gas removal system includes a sensor mounted on the housing to sense the presence of gas, and a valve is operably coupled to the sensor to evacuate gas from the system when the sensor detects an accumulation of gas.Type: ApplicationFiled: February 9, 2001Publication date: August 15, 2002Inventors: Steven K. Stringer, Kevin L. Hultquist, Mehrdad Farhangnia, Ben F. Brian, Fred I. Linker, James M. Culp, Jean-Pierre Dueri, Thomas A. Afzal