Patents by Inventor Michael L. Garrison
Michael L. Garrison 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: 7670366Abstract: Implantable medical devices comprising a support frame and a graft member attached to the support frame. The support frame can define one or more structural features that substantially prevent migration of the graft member along the support frame.Type: GrantFiled: April 8, 2004Date of Patent: March 2, 2010Assignee: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Ram H. Paul, Andrew K. Hoffa, Michael L. Garrison, Joseph F. Obermiller
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Patent number: 7658759Abstract: Implantable frames for use in body passages are provided herein. The implantable frames comprise one or more of certain preferred structural features that are generally applicable to frames comprising a plurality of curved and straight member portions that together define an interior lumen extending along a longitudinal axis between a proximal end and a distal end. The implantable frames have an exterior surface comprising a plurality of openings between the interior lumen and the exterior surface, and preferably include one or more undulating hoop members attached to one or more longitudinal connecting members. The implantable frames can be formed from any suitable material, but preferably comprise material permitting the frame to radially self-expand from a radially compressed configuration to a radially expanded configuration. The implantable frames are useful for endolumenal implantation within a body vessel, for example as a stent or as a support frame of an implantable valve.Type: GrantFiled: July 17, 2006Date of Patent: February 9, 2010Assignee: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Michael L. Garrison
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Publication number: 20100030314Abstract: Implantable medical devices comprising a support frame and a graft member attached to the support frame. The support frame can define one or more structural features that substantially prevent migration of the graft member along the support frame.Type: ApplicationFiled: October 9, 2009Publication date: February 4, 2010Inventors: Brian C. Case, Jacob A. Flagle, Ram H. Paul, Andrew K. Hoffa, Michael L. Garrison, Joseph F. Obermiller
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Patent number: 7628803Abstract: An valve prosthesis, such as an artificial venous valve, having a support frame and leaf structure comprising one or more leaflets in which the outer edge of each leaflet engages the inner circumference of the bodily passageway along a serpentine path urged against the passageway by an expandable frame, while the inner edges move in response to fluid to restrict retrograde flow. Optionally, one or more elements can extend from the support frame/leaf structure to provide centering support and/or protection from the leaflet adhering to the vessel wall. In one embodiment, the centering support structure comprises a second or third expandable frames attached to and extending from the proximal and/or distal ends of main valve structure and support frame. In another embodiment, one or more support elements extend outward from the valve support frame to engage the vessel wall to provide greater longitudinal stability.Type: GrantFiled: August 15, 2003Date of Patent: December 8, 2009Assignees: Cook Incorporated, Oregon Health Science UniversityInventors: Dusan Pavcnik, Thomas A. Osborne, Brian C. Case, Jacob A. Flagle, Michael L. Garrison, Andrew K. Hoffa, Raymond B. Leonard, II, Darin G. Schaeffer, Richard B. Sisken
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Patent number: 7625399Abstract: Implantable frames for use in body passages are provided herein. The implantable frames can include a plurality of hoop members joined by a plurality of longitudinal connecting members to form a tubular frame defining a cylindrical lumen. The plurality of longitudinal connecting members may include one or more pairs of closely-spaced longitudinal connecting members aligned substantially parallel to the longitudinal axis of the implantable frame. The circumferential distance between the closely-spaced longitudinal connecting members preferably subtends an angle less than (2?/n) radians, where (n) is an integer equal to the total number of longitudinal connecting members connecting two longitudinally adjacent hoop members.Type: GrantFiled: October 10, 2006Date of Patent: December 1, 2009Assignee: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Michael L. Garrison
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Patent number: 7618447Abstract: An expandable venous valve having a support structure that configured to enlarge the area adjacent to the valve structure such that the flow patterns of retrograde flow are modified in a way that facilitates the flushing of the pockets at the base of the valve area to prevent stagnation of bodily fluid, which in the venous system, can lead to thrombus formation. The enlarged pocket areas can be created by forming an artificial sinus adjacent the valve structure in an unsupported section of vessel wall between two support frame section or the support frame can comprise an expanded-diameter intermediate or proximal section that forms an artificial sinus adjacent the valve structure.Type: GrantFiled: August 30, 2004Date of Patent: November 17, 2009Assignee: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Andrew K. Hoffa, Darin G. Schaeffer, Michael L. Garrison
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Patent number: 7604661Abstract: An valve prosthesis, such as an artificial venous valve, having a support frame and leaf structure comprising one or more leaflets in which the outer edge of each leaflet engages the inner circumference of the bodily passageway along a serpentine path urged against the passageway by an expandable frame, while the inner edges move in response to fluid to restrict retrograde flow. Optionally, one or more elements can extend from the support frame/leaf structure to provide centering support and/or protection from the leaflet adhering to the vessel wall. In one embodiment, the centering support structure comprises a second or third expandable frames attached to and extending from the proximal and/or distal ends of main valve structure and support frame. In another embodiment, one or more support elements extend outward from the valve support frame to engage the vessel wall to provide greater longitudinal stability.Type: GrantFiled: October 31, 2007Date of Patent: October 20, 2009Assignees: Cook Incorporated, William Cook Europe ApS, MED Institute, Oregon Health Sciences UniversityInventors: Dusan Pavcnik, Thomas A. Osborne, Brian C. Case, Jacob A. Flagle, Michael L. Garrison, Ram H. Paul, Jr., Andrew K. Hoffa, Raymond B. Leonard, II, Darin G. Schaeffer, Richard B. Sisken
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Patent number: 7458987Abstract: Described are vascular valve devices for implantation in a patient. The vascular valve devices are designed to compensate for the retraction characteristics of a remodelable material used to form one or more leaflets. Alternatively, or in addition, the devices are designed to reduce retraction of the remodelable leaflet-forming material. Further described are methods for preparing and using these vascular valve devices.Type: GrantFiled: October 27, 2005Date of Patent: December 2, 2008Assignee: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Michael L. Garrison, F. Joseph Obermiller, Dusan Pavcnik
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Patent number: 7128759Abstract: Medical devices for implantation in a body vessel are provided. A medical device according to the invention comprises a support structure and one or more graft members comprising a valve portion and a constraining portion. The support structure has a first, unexpanded configuration and a second, expanded configuration. The constraining portion is adapted to substantially prevent the support structure from achieving the second, expanded configuration. The valve portion is adapted to permit fluid flow through a body vessel in a first direction and substantially prevent fluid flow through the vessel in a second, opposite direction.Type: GrantFiled: May 19, 2004Date of Patent: October 31, 2006Assignee: Cook IncorporatedInventors: Thomas A. Osborne, Brian C. Case, Jacob A. Flagle, Andrew K. Hoffa, Michael L. Garrison
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Publication number: 20040260389Abstract: An expandable venous valve having a support structure that configured to enlarge the area adjacent to the valve structure such that the flow patterns of retrograde flow are modified in a way that facilitates the flushing of the pockets at the base of the valve area to prevent stagnation of bodily fluid, which in the venous system, can lead to thrombus formation. The enlarged pocket areas can be created by forming an artificial sinus adjacent the valve structure in an unsupported section of vessel wall between two support frame section or the support frame can comprise an expanded-diameter intermediate or proximal section that forms an artificial sinus adjacent the valve structure.Type: ApplicationFiled: August 30, 2004Publication date: December 23, 2004Applicant: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Andrew K. Hoffa, Darin G. Schaeffer, Michael L. Garrison
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Publication number: 20040243222Abstract: Medical devices for implantation in a body vessel are provided. A medical device according to the invention comprises a support structure and one or more graft members comprising a valve portion and a constraining portion. The support structure has a first, unexpanded configuration and a second, expanded configuration. The constraining portion is adapted to substantially prevent the support structure from achieving the second, expanded configuration. The valve portion is adapted to permit fluid flow through a body vessel in a first direction and substantially prevent fluid flow through the vessel in a second, opposite direction.Type: ApplicationFiled: May 19, 2004Publication date: December 2, 2004Inventors: Thomas A. Osborne, Brian C. Case, Jacob A. Flagle, Andrew K. Hoffa, Michael L. Garrison
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Publication number: 20040225344Abstract: Devices, kits, and methods for delivering multiple intraluminal medical devices into a body vessel are provided.Type: ApplicationFiled: April 23, 2004Publication date: November 11, 2004Inventors: Andrew K. Hoffa, Jacob A. Flagle, Michael L. Garrison
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Publication number: 20040225322Abstract: Methods and devices for delivering and deploying expandable intraluminal medical devices at a desired point of treatment within a body vessel are provided. A portion of a delivery device is spaced from an interior wall surface of the body vessel prior to deployment of the expandable intraluminal device.Type: ApplicationFiled: March 19, 2004Publication date: November 11, 2004Inventors: Michael L. Garrison, Brian C. Case, Andrew K. Hoffa, Jacob A. Flagle, Dusan Pavcnik
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Publication number: 20040225348Abstract: Implantable medical devices comprising a support frame and a graft member attached to the support frame. The support frame can define one or more structural features that substantially prevent migration of the graft member along the support frame.Type: ApplicationFiled: April 8, 2004Publication date: November 11, 2004Inventors: Brian C. Case, Jacob A. Flagle, Ram H. Paul, Andrew K. Hoffa, Michael L. Garrison, Joseph F. Obermiller
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Publication number: 20040193209Abstract: A long-term retrievable, permanent blood filtration unit is to be implanted in a vessel of a patient's body, particularly for capturing blood clots, comprising a filter, a stent and a locking mechanism for releasably attaching the filter to the stent.Type: ApplicationFiled: September 12, 2003Publication date: September 30, 2004Inventors: Dusan Pavcnik, Brian C. Case, John A. Kaufman, Michael L. Garrison, Jacob A. Flagle
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Publication number: 20040186558Abstract: An valve prosthesis, such as an artificial venous valve, having a support frame and leaf structure comprising one or more leaflets in which the outer edge of each leaflet engages the inner circumference of the bodily passageway along a serpentine path urged against the passageway by an expandable frame, while the inner edges move in response to fluid to restrict retrograde flow. Optionally, one or more elements can extend from the support frame/leaf structure to provide centering support and/or protection from the leaflet adhering to the vessel wall. In one embodiment, the centering support structure comprises a second or third expandable frames attached to and extending from the proximal and/or distal ends of main valve structure and support frame. In another embodiment, one or more support elements extend outward from the valve support frame to engage the vessel wall to provide greater longitudinal stability.Type: ApplicationFiled: August 15, 2003Publication date: September 23, 2004Applicants: COOK INCORPORATED, OREGON HEALTH & SCIENCE UNIVERSITY, WILLIAM COOK EUROPE ApS, MED INSTITUTE INC.Inventors: Dusan Pavcnik, Thomas A. Osborne, Brian C. Case, Jacob A. Flagle, Michael L. Garrison, Andrew K. Hoffa, Raymond B. Leonard, Darin G. Schaeffer, Richard B. Sisken
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Publication number: 20040167619Abstract: A expandable prosthesis having an imageable structure comprising one or more elements visually distinguishable by an external (e.g., radiographic or ultrasonic) imaging system, the structure being located about a first axis that corresponds to a structural feature of the prosthesis that is configured to perform a specific function particular to that axis. The imageable structure is configured to assist in the rotational orientation of the prosthesis during placement within the implantation site. In one embodiment, the prosthesis comprises a venous valve that includes imageable elements or structure, such as a pair of radiopaque markers, that defines the orifice of the valve structure such that the orifice can be oriented with a particular anatomical feature under imaging, such as to align the orifice with the long axis of the vessel.Type: ApplicationFiled: February 26, 2004Publication date: August 26, 2004Applicant: Cook IncorporatedInventors: Brian C. Case, Jacob A. Flagle, Michael L. Garrison, Andrew K. Hoffa, Ray Leonard