Patents by Inventor Mark S. Lent
Mark S. Lent 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: 20040220543Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc. Methods for treating diseases, including pain and spasticity are also discussed, as well as methods for screening patients and optimizing therapies.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent, Justin A. Blanco
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Publication number: 20040220545Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc. Methods for treating diseases, including pain and spasticity are also discussed, as well as methods for screening patients and optimizing therapies.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent, Justin A. Blanco
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Publication number: 20040220547Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, IncInventors: Kenneth T. Heruth, Mark S. Lent, Justin A. Blanco
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Publication number: 20040220548Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent, Justin A. Blanco
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Publication number: 20040220544Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc. Methods for treating diseases, including pain and spasticity are also discussed, as well as methods for screening patients and optimizing therapies.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent
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Publication number: 20040220552Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent, Justin A. Blanco
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Publication number: 20040220546Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc. Methods for treating diseases, including pain and spasticity are also discussed, as well as methods for screening patients and optimizing therapies.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent
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Publication number: 20040220518Abstract: Devices, systems and methods for delivering one or more drugs to one or more internal body locations (such as the cerebrospinal fluid) are disclosed. In various aspects, the systems and methods may involve catheters having infusion sections with permeable membranes that develop significant back pressure to enhance uniform delivery of the drug over an infusion section; catheters that have two or more infusion sections spaced apart along the length of the same catheter, catheters that include two or more infusion sections serviced by independent lumens (such that, e.g., different drug solutions can be delivered to the different infusion sections); implantable drug delivery systems with pumps and multiple reservoirs from which drugs can be delivered; systems that are capable of delivering drug solutions with selected densities; etc.Type: ApplicationFiled: December 23, 2003Publication date: November 4, 2004Applicant: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent, Justin A. Blanco
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Publication number: 20040172090Abstract: In an implantable medical device having individual modules, a coupling module couples the modules to one another. The coupling module supports electrical and/or mechanical coupling of the modules. The coupling module may assume a variety of shapes or configurations. The various embodiments of the coupling module may offer the modules varying degrees of freedom of movement relative to one another.Type: ApplicationFiled: December 9, 2003Publication date: September 2, 2004Inventors: Darren A. Janzig, Carl D. Wahlstrand, Robert M. Skime, Mark S. Lent, Keith Miesel, James E. Cabak
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Patent number: 6733476Abstract: An implantable drug infusion device includes a pump tube for holding a liquid to be pumped. A race is configured to support the pump tube. A roller assembly is configured to compress the tube against the race at one or more points along the path, and the roller assembly includes at least one roller. A drive assembly drives the roller assembly relative to the tube along the path so as to move the liquid through the tube. At least two biasing members are operably connected to the roller to bias the roller against the tube, the two biasing members forming an angle.Type: GrantFiled: April 13, 2001Date of Patent: May 11, 2004Assignee: Medtronic, Inc.Inventors: Steven R. Christenson, James Randall, Micheal Thomas Hegland, James M. Haase, Mark S. Lent, William H. Monsen
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Publication number: 20030225372Abstract: A medical device known as an implantable infusion device is configured for implanting in humans to deliver a therapeutic substance such as pharmaceutical compositions, genetic materials, and biologics to treat a variety of medical conditions such as pain, spasticity, cancer, and many other conditions. The infusion device incorporates a motor coil connector and mechanical sealing system between the clean motor compartment and the potentially corrosive pump compartment that provides a reliable electrical connection between the motor coil and the motor drive electronics. The motor coil connector provides for bonding of a very small diameter coil wire to one end of the connector and a highly corrosion resistant connection at the other end of the connector. Additionally, the motor coil connector and mechanical sealing system provides a seal against harmful corrosion materials that could emanate from the pump compartment and reach the motor compartment and cause malfunction of the motor.Type: ApplicationFiled: May 31, 2002Publication date: December 4, 2003Inventors: Steven R. Christenson, Mark S. Lent, Christian Peclat
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Publication number: 20020173755Abstract: An implantable drug infusion device includes a pump tube for holding a liquid to be pumped. A race is configured to support the pump tube. A roller assembly is configured to compress the tube against the race at one or more points along the path, and the roller assembly includes at least one roller. A drive assembly drives the roller assembly relative to the tube along the path so as to move the liquid through the tube. At least two biasing members are operably connected to the roller to bias the roller against the tube, the two biasing members forming an angle.Type: ApplicationFiled: April 13, 2001Publication date: November 21, 2002Inventors: Steven R. Christenson, James Randall, Michael Thomas Hegland, James M. Haase, Mark S. Lent, William H. Monsen
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Patent number: 6458118Abstract: An implantable drug delivery device comprising a microencapsulated drug contained within at least one capsule, a carrier fluid that will dissolve the drug when freed from the capsule, a drug releaser for freeing the microencapsulated drug from the capsule, a reservoir in which the carrier fluid dissolves the drug, and an electromechanical pump to convey the dissolved drug to a catheter, through which the drug is delivered to a target site within a patient.Type: GrantFiled: February 23, 2000Date of Patent: October 1, 2002Assignee: Medtronic, Inc.Inventors: Mark S. Lent, Kenneth T. Heruth, Thomas R. Prentice
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Patent number: 5606946Abstract: An auxiliary power system includes an engine balance system, an integrated alternator/starter, a thermal management system, noise-vibration-harshness control system, an emissions/fuel economy system, an APU master control unit, and a vehicle control system.Type: GrantFiled: June 7, 1995Date of Patent: March 4, 1997Assignee: Onan CorporationInventors: Stanley E. Data, Robert P. Koziara, Mark S. Lent, Patrick A. O'Gorman, Thomas K. Rose, Eugene G. Shanks, Daniel A. Norrick
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Patent number: 5469820Abstract: An auxiliary power system includes an engine balance system, an integrated alternator/starter, a thermal management system, noise-vibration-harshness control system, an emissions/fuel economy system, an APU master control unit, and a vehicle control system.Type: GrantFiled: January 20, 1995Date of Patent: November 28, 1995Assignee: Onan CorporationInventors: Stanley E. Data, Robert P. Koziara, Mark S. Lent, Patrick A. O'Gorman, Thomas K. Rose, Eugene G. Shanks, Daniel A. Norrick
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Patent number: 5240222Abstract: An apparatus as a secondary vibration isolation system for use in mounting a mechanism having a vibrating element, a housing and a primary vibration isolation system to a separate structure. The apparatus is comprised of a hanging element attached to the separate structure, a secondary vibration isolator for dampening the vibration transmitted from the mechanism to the separate structure, and a securing element to secure the mechanism to the hanging element so that the secondary vibration isolator is positioned between the mechanism and the hanging element.Type: GrantFiled: March 13, 1992Date of Patent: August 31, 1993Assignee: ONAN CorporationInventors: Dale F. Seeley, Stephen M. Clancey, Gary A. Salmonson, Keith Ewer, Mark S. Lent
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Patent number: 5125236Abstract: A combined generator set and air conditioning compressor drive system is disclosed for use in a mobile vehicle. The disclosed device includes an auxiliary engine, a compressor, and a motor-generator. When an external source of electricity is unavailable, the motor-generator is shaft driven by the auxiliary engine and operated as a generator to provide electricity to the vehicle. The compressor is also shaft driven. When an external source of electricity is available, the motor-generator operates as a motor so as to drive the compressor.Type: GrantFiled: September 26, 1991Date of Patent: June 30, 1992Assignee: Onan CorporationInventors: Stephen M. Clancey, David A. Overland, Deborah A. Klinkert, Mark S. Lent, Paul H. Plahn
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Patent number: 4835405Abstract: A generator set including an internal combustion engine which drives an alternator or generator to generate electricity. The engine and the generator are air cooled by air driven by a fan along two parallel air cooling circuits through the generator set. The components of the set are enclosed in a two-piece housing or enclosure having two openings, an air inlet and an air outlet.Type: GrantFiled: November 30, 1987Date of Patent: May 30, 1989Assignee: Onan CorporationInventors: Stephen M. Clancey, Stanely D. Hjelmstad, Mark S. Lent, Michael C. Miller
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Patent number: 4528966Abstract: A liquid propane gas fuel system includes a propane fuel tank. A two stage pressure regulator defined by a housing with a fuel inlet and a fuel outlet is also included. A first fuel conduit extends from an outlet in the fuel tank to the fuel inlet in the pressure regulator. The system supplies fuel to an engine that includes an exhaust gas manifold. A thermoconductive mounting bracket is secured to the housing of the pressure regulator and manifold to transmit heat from the manifold to the regulator in proportion to the load imposed on the engine. A chokeless carburetor is also included in the system and is in fluid communication through a second fuel conduit with the outlet of the pressure regulator. In an alternative embodiment, a heat exchanger is included in the first fuel conduit. In a second alternative embodiment, an electric heating element is positioned within the housing of the pressure regulator.Type: GrantFiled: August 6, 1984Date of Patent: July 16, 1985Assignee: McGraw-Edison CompanyInventors: Mark S. Lent, Paige R. Nelson
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Patent number: D295621Type: GrantFiled: August 5, 1985Date of Patent: May 10, 1988Assignee: Onan CorporationInventors: Mark S. Lent, Paul W. Haverly