Patents by Inventor Raymond B. Leonard
Raymond B. Leonard 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: 10028849Abstract: A flexible stent graft for deployment in a body vessel at a treatment site that includes a tubular body of graft material having circumferential crimps with alternative troughs and crests along its length, and a stent system comprising a plurality of circumferential turns which are attached at the crest.Type: GrantFiled: July 23, 2015Date of Patent: July 24, 2018Assignee: Cook Medical Technologies LLCInventors: Bao Bui, Werner D. Ducke, David E. Hartley, Raymond B. Leonard, II
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Publication number: 20150320578Abstract: A flexible stent graft for deployment in a body vessel at a treatment site that includes a tubular body of graft material having circumferential crimps with alternative troughs and crests along its length, and a stent system comprising a plurality of circumferential turns which are attached at the crest.Type: ApplicationFiled: July 23, 2015Publication date: November 12, 2015Applicant: Cook Medical Technologies LLCInventors: Bao Bui, Werner D. Ducke, David E. Hartley, Raymond B. Leonard, II
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Patent number: 9107741Abstract: A flexible stent graft for deployment in a body vessel at a treatment site includes a tubular body, at least a first portion of which comprises a graft material and a coiled stent comprising a plurality of helical turns with spacings between the turns. The coiled stent is affixed to the graft material of the first portion. The first portion has a first portion diameter and the coiled stent has a helix diameter which is substantially the same as the first portion diameter. The coiled stent comprises a ratio of helical pitch to helix diameter of from about 1:2 to about 1:20, where the helical pitch is the spacing between adjacent turns of the coiled stent.Type: GrantFiled: October 30, 2008Date of Patent: August 18, 2015Assignee: Cook Medical Technologies LLCInventors: Bao Bui, Werner D. Ducke, David E. Hartley, Raymond B. Leonard
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Patent number: 9078746Abstract: A valve prosthesis, such as an artificial venous valve, is described. The valve prosthesis has a support frame formed from a cannula and an attached covering that defines an opening adapted to move between a first position in which the opening is open to fluid flow and a second position in which the opening is closed to fluid flow. The support frame includes a leaflet support portion and a circumferential centering support element disposed adjacent the leaflet support portion with respect to a lengthwise axis of the support frame and mirroring the leaflet support portion with respect to a transverse axis of the support frame.Type: GrantFiled: February 25, 2013Date of Patent: July 14, 2015Assignees: COOK MEDICAL TECHNOLOGIES LLC, OREGON HEALTH AND SCIENCE UNIVERSITYInventors: Dusan Pavcnik, Brian C. Case, Jacob A. Flagle, Michael Garrison, Andrew K. Hoffa, Raymond B. Leonard, II, Thomas A. Osborne, Ram H. Paul, Jr., Darin G. Schaeffer, Richard B Sisken
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Patent number: 8613763Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: GrantFiled: October 27, 2008Date of Patent: December 24, 2013Assignees: Cook Medical Technologies LLC, Cook Biotech Incorporated, Oregon Health Science UniversityInventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, John A. DeFord, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, II, Joseph F. Obermiller
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Publication number: 20130226291Abstract: A valve prosthesis, such as an artificial venous valve, is described. The valve prosthesis has a support frame formed from a cannula and an attached covering that defines an opening adapted to move between a first position in which the opening is open to fluid flow and a second position in which the opening is closed to fluid flow. The support frame includes a leaflet support portion and a circumferential centering support element disposed adjacent the leaflet support portion with respect to a lengthwise axis of the support frame and mirroring the leaflet support portion with respect to a transverse axis of the support frame.Type: ApplicationFiled: February 25, 2013Publication date: August 29, 2013Inventors: DUSAN PAVCNIK, BRIAN C. CASE, JACOB A. FLAGLE, MICHAEL GARRISON, ANDREW K. HOFFA, RAYMOND B. LEONARD, II, THOMAS A. OSBORNE, RAM H. PAUL, JR., DARIN G. SCHAEFFER, RICHARD B. SISKEN
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Patent number: 8444687Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame using heat or pressure welding crimping, adhesive, or other techniques to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: GrantFiled: February 26, 2009Date of Patent: May 21, 2013Assignees: Cook Medical Technologies LLC, Cook Biotech Incorporated, Oregon Health Science UniversityInventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, II, Joseph F. Obermiller, John A. DeFord, Joseph W. Roberts
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Patent number: 8382822Abstract: A 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 7, 2009Date of Patent: February 26, 2013Assignees: Cook Medical Technologies LLC, Oregon Health & Science UniversityInventors: Dusan Pavcnik, Brian C. Case, Jacob A. Flagle, Michael Garrison, Andrew K. Hoffa, Raymond B. Leonard, II, Thomas A. Osborne, Ram H. Paul, Jr., Darin G. Schaeffer, Richard B Sisken
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Publication number: 20100057191Abstract: 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: October 7, 2009Publication date: March 4, 2010Inventors: 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: 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: 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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Publication number: 20090157169Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame using heat or pressure welding crimping, adhesive, or other techniques to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: ApplicationFiled: February 26, 2009Publication date: June 18, 2009Inventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, II, Joseph F. Obermiller, John A. DeFord, Joseph W. Roberts
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Publication number: 20090125095Abstract: A flexible stent graft for deployment in a body vessel at a treatment site includes a tubular body, at least a first portion of which comprises a graft material and a coiled stent comprising a plurality of helical turns with spacings between the turns. The coiled stent is affixed to the graft material of the first portion. The first portion has a first portion diameter and the coiled stent has a helix diameter which is substantially the same as the first portion diameter. The coiled stent comprises a ratio of helical pitch to helix diameter of from about 1:2 to about 1:20, where the helical pitch is the spacing between adjacent turns of the coiled stent.Type: ApplicationFiled: October 30, 2008Publication date: May 14, 2009Applicants: Cook Incorporated, William Cook Australia Pty. Ltd.Inventors: Bao Bui, Werner D. Ducke, David E. Hartley, Raymond B. Leonard
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Patent number: 7520894Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame using heat or pressure welding crimping, adhesive, or other techniques to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: GrantFiled: June 22, 2005Date of Patent: April 21, 2009Assignees: Cook Incorporated, Cook Biotech Incorporated, Oregon Health & Science UniversityInventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, II, Joseph F. Obermiller, John A. DeFord, Joseph W. Roberts
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Publication number: 20090048662Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: ApplicationFiled: October 27, 2008Publication date: February 19, 2009Inventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, John A. DeFord, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, II, Joseph F. Obermiller
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Patent number: 7452371Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: GrantFiled: February 5, 2001Date of Patent: November 18, 2008Assignees: Cook Incorporated, Oregon Health & Science University, Cook Biotech, Inc.Inventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, II, Joseph F. Obermiller, John A. DeFord, Joseph W. Roberts
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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: 20020193828Abstract: Endovascular filter (10) including a plurality of struts (14) with distal ends (18) adapted to anchor the filter to the vessel wall after deployment, such as by having barbs (20), the filter being adapted to be retrieved if desired. Strut distal ends (18) are coated with an antiproliferative agent (40) that inhibits the ingrowth of tissue around the filter, thereby permitting the filter to be retrieved and removed atraumatically after a prolonged period of time, thus extending the useful life of the retrievable filter. Optionally, the proximal end (22) of the filter may also be so coated, or the entire filter.Type: ApplicationFiled: June 14, 2002Publication date: December 19, 2002Applicant: COOK INCORPORATEDInventors: Dennis Griffin, Arne Molgaard-Nielsen, Anthony O. Ragheb, Raymond B. Leonard
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Publication number: 20010039450Abstract: A multiple-sided medical device comprises a frame comprising wire or other resilient material and having a series of bends and interconnecting sides. The device has both a flat configuration and a second, folded configuration which a generally serpentine shape. The device is pushed from a delivery catheter into the lumen of a duct or vessel and may include one or more barbs for anchoring purposes. A full or partial covering of fabric or other flexible material such as DACRON, PTFE, or a collagen-based material such as small intestinal submucosa (SIS), may be sutured or attached to the frame to form an occlusion device, a stent graft, or an implantable, intraluminal valve such as for correcting incompetent veins in the lower legs and feet.Type: ApplicationFiled: February 5, 2001Publication date: November 8, 2001Inventors: Dusan Pavcnik, Frederick S. Keller, Josef Rosch, Thomas A. Osborne, Brian L. Bates, John A. Deford, Christopher G. Dixon, Andrew K. Hoffa, Raymond B. Leonard, Joseph F. Obermiller