Patents by Inventor Walter L. Carpenter
Walter L. Carpenter 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: 7829018Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: June 13, 2007Date of Patent: November 9, 2010Assignee: Medtronic, Inc.Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Mark D. Stringham
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Patent number: 7740800Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: February 5, 2007Date of Patent: June 22, 2010Assignee: Medtronic, Inc.Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Frederick A. Shorey, Laura A. Yonce, Mark D. Stringham
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Patent number: 7704455Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: February 5, 2007Date of Patent: April 27, 2010Assignee: Medtronic, Inc.Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Mark D. Stringham
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Patent number: 7682563Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: February 14, 2007Date of Patent: March 23, 2010Assignee: Medtronic, Inc.Inventors: Walter L. Carpenter, Robert W. Olsen, Frederick A. Shorey, Jr., Mark G. Bearss, Bruce R. Jones, Laura A. Yonce
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Patent number: 7335334Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: December 22, 2003Date of Patent: February 26, 2008Assignee: Medtronic, Inc.Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Mark D. Stringham
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Patent number: 7204958Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: December 22, 2003Date of Patent: April 17, 2007Assignee: Medtronic, Inc.Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Frederick A. Shorey, Laura A. Yonce, Mark D. Stringham
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Patent number: 7201870Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: December 22, 2003Date of Patent: April 10, 2007Assignee: Medtronic, Inc.Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Mark D. Stringham
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Patent number: 7198751Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: December 22, 2003Date of Patent: April 3, 2007Assignee: Medtronic, Inc.Inventors: Walter L. Carpenter, Robert W. Olsen, Stefanie Heine, Frederick A. Shorey, Jr., Laura A. Yonce
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Patent number: 7189352Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: GrantFiled: December 22, 2003Date of Patent: March 13, 2007Assignee: Medtronic, Inc.Inventors: Walter L. Carpenter, Robert W. Olsen, Frederick A. Shorey, Jr., Mark G. Bearss, Bruce R. Jones, Laura A. Yonce
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Publication number: 20040217054Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: ApplicationFiled: December 22, 2003Publication date: November 4, 2004Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Frederick A. Shorey, Laura A. Yonce, Mark D. Stringham
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Publication number: 20040220509Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: ApplicationFiled: December 22, 2003Publication date: November 4, 2004Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Mark D. Stringham
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Publication number: 20040195178Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: ApplicationFiled: December 22, 2003Publication date: October 7, 2004Inventors: Walter L. Carpenter, Robert W. Olsen, Frederick A. Shorey, Mark G. Bearss, Bruce R. Jones, Laura A. Yonce
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Publication number: 20040197223Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.Type: ApplicationFiled: December 22, 2003Publication date: October 7, 2004Inventors: Robert W. Olsen, Walter L. Carpenter, John B. Dickey, Mark D. Stringham
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Patent number: 5807326Abstract: A coronary sinus catheter assembly for the retrograde infusion of cardioplegia solutions into the coronary sinus. The assembly comprises a catheter having a balloon with a plurality of segmented annular ribs, and a stylet having a relatively stiff proximal sleeve and a relatively flexible malleable wire extending distally from the sleeve.Type: GrantFiled: March 6, 1995Date of Patent: September 15, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: William G. O'Neill, Christopher M. Boykin, Nelson L. Huldin, Sheila J. Hanson, Walter L. Carpenter, Thomas T. Vaalburg
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Patent number: 5620418Abstract: A coronary sinus catheter for the retrograde infusion of cardioplegia solutions into the coronary sinus. The catheter is adapted for improved retention in the coronary sinus. The catheter comprises a catheter tube having infusion, pressure-sensing and balloon-inflation lumens, an inflatable balloon and a pressure sensor tube in fluid communication with the balloon-inflation lumen for sensing pressure in the inflatable balloon. The internal volume of the pressure sensor tube is relatively non-expansible relative to the internal volume of the inflation balloon in normal operation of the catheter. The balloon includes a plurality of segmented annular ribs.Type: GrantFiled: December 7, 1994Date of Patent: April 15, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: William G. O'Neill, Nelson L. Huldin, Sheila J. Hanson, Walter L. Carpenter
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Patent number: 5395331Abstract: A coronary sinus catheter for the retrograde infusion of cardioplegia solutions into the coronary sinus. The catheter is adapted for improved retention in the coronary sinus. The catheter comprises a catheter tube having infusion, pressure-sensing and balloon-inflation lumens, an inflatable balloon and a pressure sensor tube in fluid communication with the balloon-inflation lumen for sensing pressure in the inflatable balloon. The internal volume of the pressure sensor tube is relatively non-expansible relative to the internal volume of the inflation balloon in normal operation of the catheter. The balloon includes a plurality of segmented annular ribs.Type: GrantFiled: February 23, 1993Date of Patent: March 7, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: William G. O'Neill, Nelson L. Huldin, Sheila J. Hanson, Walter L. Carpenter
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Patent number: 5067879Abstract: The invention relates to a tube for peristaltic pumps wherein rotating members progressively compress the tube to force fluid therethrough for discharging at an outlet end. The tube includes a pair of oppositely disposed longitudinally extending notches or grooves defined in the exterior surface thereof which enhance the flexing characteristics of the tube, permit the flattened cross-sectional area to completely seal with minimal force applied by the rotating members and controls the vacuum pressures generated. The depth and geometric configuration of the notches and the durometer of the tube may be selected to control the compression and expansion characteristics of the tube section to generate and control the desired vacuum or subatmospheric pressure levels for a particular application.Type: GrantFiled: September 18, 1990Date of Patent: November 26, 1991Inventor: Walter L. Carpenter
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Patent number: 4416280Abstract: A system for achieving cardioplegia, a protective cessation of the heart muscle activity during open heart surgery which includes providing a circulation system in parallel with the main life support system and deriving a blood source from the arterial reservoir of the main life support system, moving blood from said source through a cooling heat exchanger for selective discharge to the aorta of the heart patient or to a cardiotomy reservoir in the main life support system. The system includes a means for titration of medication to the blood and temperature control and monitoring equipment.Type: GrantFiled: December 10, 1981Date of Patent: November 22, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventors: Walter L. Carpenter, Bruce A. Amrine
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Patent number: 4198080Abstract: A telescoping-type connector comprising outer and inner telescoping members, the inner telescoping member defining an outer circumferential groove, and adapted to sealingly fit in telescoping relation within an aperture of the outer telescoping member. The outer telescoping member includes retention means for releasably projecting into the outer circumferential groove, to retain the inner and outer members in the desired sealing, telescoping relation. In accordance with this invention, the inner telescoping member defines, between the circumferential groove and the forward end of the inner member relative to the outer member, a recessed portion on its outer surface for facilitating molding and the like. Ribbed members are positioned within the recessed portion, to prevent the retention means from projecting therein and providing inadequate locking of the connector.Type: GrantFiled: May 19, 1978Date of Patent: April 15, 1980Assignee: Baxter Travenol Laboratories, Inc.Inventor: Walter L. Carpenter
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Patent number: 4151088Abstract: A diffusion system for blood including a membrane diffusion device comprising a plurality of blood flow paths positioned in interleaving diffusion exchange relation, with second fluid flow paths positioned on opposite sides of semi-permeable membrane means. The first and second flow paths each communicate with an inlet and an outlet. Heat exchange means having an inlet and an outlet is connected at the inlet thereof to the outlet of the first flow paths. A rigid reservoir, also having an inlet and an outlet is connected at its inlet to the outlet of the heat exchange means. A blood flow circuit is defined through the membrane diffusion device, heat exchange means, and reservoir. The flow circuit defines an essentially constant width, perpendicular to the directions of blood flow, from its beginning to end, to provide a system having good flow distribution in combination with a low pressure drop.Type: GrantFiled: January 23, 1978Date of Patent: April 24, 1979Assignee: Baxter Travenol Laboratories, Inc.Inventors: Ludwig Wolf, Jr., Walter L. Carpenter