Patents by Inventor Michael Hegland
Michael Hegland 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: 9320571Abstract: Image data can be obtained with an imaging device. A location of the imaging device relative to a subject can be determined. A location of an instrument can be tracked relative to the subject using a tracking system. Also, the tracked location of the instrument can be illustrated relative to the image data.Type: GrantFiled: December 30, 2009Date of Patent: April 26, 2016Assignee: Medtronic, Inc.Inventors: Dale F. Seeley, Phillip Falkner, Michael Hegland, Steven L. Hartmann, Brad Jacobsen
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Patent number: 9220893Abstract: Shields within implantable leads increase the torsional stiffness of the leads. The torsional stiffness may be reduced by cutting the shield axially to break the circumferential mechanical continuity of the shield. The circumferential shielding continuity of the shield may be re-established to preserve the shielding effect in various manners. The shield may overlap onto itself to close the slot created by the cut. A shield patch may be placed across the slot created by the cut. The shield may be located between two insulation layers of the lead. The shield may be cut and then the slot closed prior to application of the outer insulation layer. The outer insulation layer may then be added over the shield. The outer insulation layer may be compliant so that once covered, the circumferential mechanical continuity of the shield remains broken.Type: GrantFiled: December 1, 2014Date of Patent: December 29, 2015Assignee: MEDTRONIC, INC.Inventors: Michael Hegland, Gary W. Salminen, Richard T. Stone, Spencer M. Bondus
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Publication number: 20150082618Abstract: Shields within implantable leads increase the torsional stiffness of the leads. The torsional stiffness may be reduced by cutting the shield axially to break the circumferential mechanical continuity of the shield. The circumferential shielding continuity of the shield may be re-established to preserve the shielding effect in various manners. The shield may overlap onto itself to close the slot created by the cut. A shield patch may be placed across the slot created by the cut. The shield may be located between two insulation layers of the lead. The shield may be cut and then the slot closed prior to application of the outer insulation layer. The outer insulation layer may then be added over the shield. The outer insulation layer may be compliant so that once covered, the circumferential mechanical continuity of the shield remains broken.Type: ApplicationFiled: December 1, 2014Publication date: March 26, 2015Inventors: Michael Hegland, Gary W. Salminen, Richard T. Stone, Spencer M. Bondhus
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Publication number: 20150080995Abstract: A medical lead may be fabricated using an electrode fixture ((130A)-(130D)) configured to facilitate circumferential and axial alignment between electrodes of the lead. In one example, a method includes positioning an electrode fixture around at least one conductor of a plurality of conductors (122) for a medical lead, wherein the electrode fixture at least partially retains an electrode assembly. The method also includes electrically coupling a portion of the at least one conductor with at least a portion of the electrode assembly at an attachment area defined by the electrode assembly when the electrode assembly is at least partially retained by the electrode fixture.Type: ApplicationFiled: March 15, 2013Publication date: March 19, 2015Applicant: Medtronic, Inc.Inventors: Dale Seeley, Evan Gustafson, Michael Hegland, Seth Humphrys, Darren Janzig, Gerald Lindner
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Patent number: 8903504Abstract: Shields within implantable leads increase the torsional stiffness of the leads. The torsional stiffness may be reduced by cutting the shield axially to break the circumferential mechanical continuity of the shield. The circumferential shielding continuity of the shield may be re-established to preserve the shielding effect in various manners. The shield may overlap onto itself to close the slot created by the cut. A shield patch may be placed across the slot created by the cut. The shield may be located between two insulation layers of the lead. The shield may be cut and then the slot closed prior to application of the outer insulation layer. The outer insulation layer may then be added over the shield. The outer insulation layer may be compliant so that once covered, the circumferential mechanical continuity of the shield remains broken.Type: GrantFiled: April 28, 2010Date of Patent: December 2, 2014Assignee: Medtronic Inc.Inventors: Michael Hegland, Gary W. Salminen, Richard T. Stone, Spencer M. Bondhus
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Patent number: 8739403Abstract: A method of manufacturing a segmented electrode assembly. An electrically conducting tube is coupled to an electrically insulating material. The tube is generally cylindrical and hollow and defines one or more gaps at a first axial position. The tube also includes one or more bridges located at a second axial position. The method includes removing at least a portion of the bridge resulting in a segmented electrode assembly having at least one segment. A number embodiments of making a tube are also provided. In another embodiment a method of manufacturing a medical lead using a segmented electrode assembly is provided.Type: GrantFiled: November 17, 2010Date of Patent: June 3, 2014Assignee: Medtronic, Inc.Inventors: Michael Hegland, Richard T. Stone
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Patent number: 8282620Abstract: A container for housing a fluid therapeutic composition includes a rigid housing, a collapsible bag and a seal. The housing has an opening and an interior surface. The interior surface forms a cavity having a volume. The bag is disposed in the housing and is expandable to contact the interior surface of the housing and occupy the entire volume of the cavity when filled with the fluid therapeutic composition. The bag has an opening that is fixed in proximity to the opening of the housing. The seal is configured to prevent air from entering the bag via the bag opening and to prevent air from entering the cavity of the housing via the housing opening.Type: GrantFiled: February 5, 2009Date of Patent: October 9, 2012Assignee: Medtronic, Inc.Inventors: James M. Olson, Michael Hegland, Dale F. Seeley
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Publication number: 20120053664Abstract: Shields within implantable leads increase the torsional stiffness of the leads. The torsional stiffness may be reduced by cutting the shield axially to break the circumferential mechanical continuity of the shield. The circumferential shielding continuity of the shield may be re-established to preserve the shielding effect in various manners. The shield may overlap onto itself to close the slot created by the cut. A shield patch may be placed across the slot created by the cut. The shield may be located between two insulation layers of the lead. The shield may be cut and then the slot closed prior to application of the outer insulation layer. The outer insulation layer may then be added over the shield. The outer insulation layer may be compliant so that once covered, the circumferential mechanical continuity of the shield remains broken.Type: ApplicationFiled: April 28, 2010Publication date: March 1, 2012Inventors: Michael Hegland, Gary W. Salminen, Richard T. Stone, Spencer M. Bondhus
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Patent number: 8000808Abstract: A medical lead having a conductor assembly and a segmented electrode assembly. The segmented electrode assembly includes a conductive segment electrically coupled to a conductor of the conductor assembly. A passageway is positioned between an inner surface and outer surface of the conductive segment. An electrically insulating material extends through the first passageway and into a gap adjacent the conductive segment. A segmented electrode assembly is also provided. The segmented electrode assembly includes a conductive segment having a passageway between an inner surface and outer surface of the conductive segment. An electrically insulating material extends through the passageway and into a gap adjacent the conductive segment.Type: GrantFiled: January 31, 2006Date of Patent: August 16, 2011Assignee: Medtronic, Inc.Inventors: Michael Hegland, Richard T. Stone
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Publication number: 20110160568Abstract: Image data can be obtained with an imaging device. A location of the imaging device relative to a subject can be determined. A location of an instrument can be tracked relative to the subject using a tracking system. Also, the tracked location of the instrument can be illustrated relative to the image data.Type: ApplicationFiled: December 30, 2009Publication date: June 30, 2011Applicant: Medtronic, Inc.Inventors: Dale F. Seeley, Phillip Falkner, Michael Hegland
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Publication number: 20110056076Abstract: A method of manufacturing a segmented electrode assembly. An electrically conducting tube is coupled to an electrically insulating material. The tube is generally cylindrical and hollow and defines one or more gaps at a first axial position. The tube also includes one or more bridges located at a second axial position. The method includes removing at least a portion of the bridge resulting in a segmented electrode assembly having at least one segment. A number embodiments of making a tube are also provided. In another embodiment a method of manufacturing a medical lead using a segmented electrode assembly is provided.Type: ApplicationFiled: November 17, 2010Publication date: March 10, 2011Applicant: MEDTRONIC, INC.Inventors: Michael Hegland, Richard T. Stone
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Publication number: 20100198184Abstract: A container for housing a fluid therapeutic composition includes a rigid housing, a collapsible bag and a seal. The housing has an opening and an interior surface. The interior surface forms a cavity having a volume. The bag is disposed in the housing and is expandable to contact the interior surface of the housing and occupy the entire volume of the cavity when filled with the fluid therapeutic composition. The bag has an opening that is fixed in proximity to the opening of the housing. The seal is configured to prevent air from entering the bag via the bag opening and to prevent air from entering the cavity of the housing via the housing opening.Type: ApplicationFiled: February 5, 2009Publication date: August 5, 2010Applicant: MEDTRONIC, INC.Inventors: James M. Olsen, Michael Hegland, Dale F. Seeley
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Patent number: 7766860Abstract: Catheter systems including one or more flow restrictors are disclosed. The catheter systems may include two or more delivery branches. The delivery branches may be connected to a supply catheter section using a branching catheter connector that may include one or more flow restrictors. The flow restrictors may include a restrictor body located within a lumen with a channel located between the restrictor body and interior surface of the lumen, the channel restricting flow through the lumen past the flow restrictor. The channel may be defined by a groove formed in the restrictor body and/or the interior surface of the lumen. Methods of providing pressure relief by flowing fluid past a flow restrictor are also disclosed.Type: GrantFiled: April 22, 2005Date of Patent: August 3, 2010Assignee: Medtronic, Inc.Inventors: James M. Olsen, Mary M. Morris, Michael Hegland, Justin A. Blanco
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Patent number: 7761985Abstract: A method of manufacturing a segmented electrode assembly. An electrically conducting tube is coupled to an electrically insulating material. The tube is generally cylindrical and hollow and defines one or more gaps at a first axial position. The tube also includes one or more bridges located at a second axial position. The method includes removing at least a portion of the bridge resulting in a segmented electrode assembly having at least one segment. A number embodiments of making a tube are also provided. In another embodiment a method of manufacturing a medical lead using a segmented electrode assembly is provided.Type: GrantFiled: January 31, 2006Date of Patent: July 27, 2010Assignee: Medtronic, Inc.Inventors: Michael Hegland, Richard T. Stone
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Patent number: 7403883Abstract: An in-vitro model apparatus of a human spine and methods for detecting and analyzing substance distribution patterns therein. In one embodiment, the model apparatus includes a column body defining a passageway that substantially mimics the size, shape, and structure of an adult human spinal canal. Also included is a cord structure that may be located and anchored within the passageway. The cord structure substantially mimics the size, shape, and structure of an adult human spinal cord. For example, the cord structure may include connecting elements that resemble nerve roots, dentate ligaments, and the septum posticum of a human spine. The passageway of the model apparatus may be filled with a first fluid that simulates cerebro-spinal fluid (CSF), and a second fluid containing a drug (or simulated drug) may be introduced into the passageway, after which the drug's distribution within the passageway may be analyzed.Type: GrantFiled: October 1, 2004Date of Patent: July 22, 2008Assignee: Medtronic, Inc.Inventors: Kenneth T. Heruth, Mark S. Lent, Michael Hegland
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Patent number: 7217251Abstract: Catheter systems including one or more flow restrictors are disclosed. The catheter systems may include two or more delivery branches. The delivery branches may be connected to a supply catheter section using a branching catheter connector that may include one or more flow restrictors. The flow restrictors may include a restrictor body located within a lumen with a channel located between the restrictor body and interior surface of the lumen, the channel restricting flow through the lumen past the flow restrictor. The channel may be defined by a groove formed in the restrictor body and/or the interior surface of the lumen. Methods of providing pressure relief by flowing fluid past a flow restrictor are also disclosed.Type: GrantFiled: April 22, 2005Date of Patent: May 15, 2007Assignee: Medtronic, Inc.Inventors: James M. Olsen, Mary M. Morris, Michael Hegland, Justin A. Blanco
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Publication number: 20070043335Abstract: A miniature drug delivery pump utilizes a shape memory Ni-Ti alloy. A flow restrictor is provided and the pump is refillable.Type: ApplicationFiled: July 21, 2006Publication date: February 22, 2007Inventors: James Olsen, Mark Lent, James Skakoon, Richard Stone, Laetitia Mayor, Dale Seeley, Michael Hegland
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Publication number: 20060168805Abstract: A method of manufacturing a segmented electrode assembly. An electrically conducting tube is coupled to an electrically insulating material. The tube is generally cylindrical and hollow and defines one or more gaps at a first axial position. The tube also includes one or more bridges located at a second axial position. The method includes removing at least a portion of the bridge resulting in a segmented electrode assembly having at least one segment. A number embodiments of making a tube are also provided. In another embodiment a method of manufacturing a medical lead using a segmented electrode assembly is provided.Type: ApplicationFiled: January 31, 2006Publication date: August 3, 2006Inventors: Michael Hegland, Richard Stone
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Publication number: 20060173262Abstract: A medical lead having a conductor assembly and a segmented electrode assembly. The segmented electrode assembly includes a conductive segment electrically coupled to a conductor of the conductor assembly. A passageway is positioned between an inner surface and outer surface of the conductive segment. An electrically insulating material extends through the first passageway and into a gap adjacent the conductive segment. A segmented electrode assembly is also provided. The segmented electrode assembly includes a conductive segment having a passageway between an inner surface and outer surface of the conductive segment. An electrically insulating material extends through the passageway and into a gap adjacent the conductive segment.Type: ApplicationFiled: January 31, 2006Publication date: August 3, 2006Applicant: Medtronic, Inc.Inventors: Michael Hegland, Richard Stone
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Publication number: 20060084941Abstract: A connector and method of medical tubing is disclosed. The connector defines a fluid passageway, and the connector includes a first end, a first intermediate portion, a middle portion, a second intermediate portion, and a second end. The middle portion is located between the first intermediate portion and the second intermediate portion, and the first end is adapted to fit inside a proximal connector-receiving portion, and the second end is adapted to fit inside a distal connector-receiving portion. The connector includes at least a first protrusion and a second protrusion projecting from the connector, wherein a first protrusion is located between the first end and the first intermediate portion, and the second protrusion is located between the second intermediate portion and the second end.Type: ApplicationFiled: December 1, 2005Publication date: April 20, 2006Applicant: Medtronic, Inc.Inventors: James Olsen, Michael Hegland