Patents by Inventor Gregory N. Nordgren

Gregory N. Nordgren 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).

  • Publication number: 20020004680
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Application
    Filed: August 24, 2001
    Publication date: January 10, 2002
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 6090135
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: July 18, 2000
    Assignee: Endovascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent Reger, Gregory N. Nordgren
  • Patent number: 5934284
    Abstract: A method of enlarging the lumen of a vessel is disclosed, by which an access opening or passageway is provided to the vessel, a head is inserted through the opening and advanced to a constriction within the vessel. The head engages, severs, and removes plaque. A vascular graft lining is inserted into the vessel and to the site of enlargement where it is secured within the vessel at the site of enlargement.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: August 10, 1999
    Assignee: Endovascular Instruments, Inc
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5904146
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: May 18, 1999
    Assignee: EndoVascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5873905
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: February 23, 1999
    Assignee: EndoVascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5865844
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: February 2, 1999
    Assignee: Endovascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5843165
    Abstract: A method of restoring lost blood flow capacity to an artery is disclosed. The artery is enlarged by enlarging the flow path of a plaque-ridden segment of the artery using a plaque-removing instrument. The instrument is introduced through a small arteriotomy located remote from the segment. Next, a vascular lining is inserted through the small arteriotomy to a position co-extensive with the segment where the lining is secured.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: December 1, 1998
    Assignee: EndoVascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5842479
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: December 1, 1998
    Assignee: Endovascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5836316
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 17, 1998
    Assignee: EndoVascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5824057
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: October 20, 1998
    Assignee: Endo-Vascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5782847
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: July 21, 1998
    Assignee: Endovascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5746758
    Abstract: Disposable intra-arterial augering and dottering-instruments for use in patients in clearing pathways at obstructed or nearly obstructed arterial sites are disclosed. A number of augering tips used on the instruments are disclosed along with a method for releasibly affixing augering tips to the instruments. In addition, a dottering tip is disclosed for use in procedures where it is desired to open a pathway without excising material from the obstructed site. A combined augering and dottering tip is disclosed for a procedure in which material displacement followed by excising of material from within an artery is accomplished without removal of the combined augering and dottering tip until the procedure is complete.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: May 5, 1998
    Assignee: Evi Corporation
    Inventors: Gregory N. Nordgren, Thomas L. Kelly
  • Patent number: 5662701
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: September 2, 1997
    Assignee: Endovascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5643297
    Abstract: Disposable intra-arterial augering and dottering instruments for use in patients in clearing pathways at obstructed or nearly obstructed arterial sites are disclosed. A number of augering tips used on the instruments are disclosed along with a method for releasibly affixing augering tips to the instruments. In addition, a dottering tip is disclosed for use in procedures where it is desired to open a pathway without excising material from the obstructed site. A combined augering and dottering tip is disclosed for a procedure in which material displacement followed by excising of material from within an artery is accomplished without removal of the combined augering and dottering tip until the procedure is complete.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: July 1, 1997
    Assignee: Endovascular Instruments, Inc.
    Inventors: Gregory N. Nordgren, Thomas L. Kelly
  • Patent number: 5643298
    Abstract: Disposable intra-arterial augering and dottering instruments for use in patients in clearing pathways at obstructed or nearly obstructed arterial sites are disclosed. A number of augering tips used on the instruments are disclosed along with a method for releasibly affixing augering tips to the instruments. In addition, a dottering tip is disclosed for use in procedures where it is desired to open a pathway without excising material from the obstructed site. A combined augering and dottering tip is disclosed for a procedure in which material displacement followed by excising of material from within an artery is accomplished without removal of the combined augering and dottering tip until the procedure is complete.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: July 1, 1997
    Inventors: Gregory N. Nordgren, Thomas L. Kelly
  • Patent number: 5632755
    Abstract: Disposable intra-arterial augering and dottering instruments for use in patients in clearing pathways at obstructed or nearly obstructed arterial sites are disclosed. A number of augering tips used on the instruments are disclosed along with a method for releasibly affixing augering tips to the instruments. In addition, a dottering tip is disclosed for use in procedures where it is desired to open a pathway without excising material from the obstructed site. A combined augering and dottering tip is disclosed for a procedure in which material displacement followed by excising of material from within an artery is accomplished without removal of the combined augering and dottering tip until the procedure is complete.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: May 27, 1997
    Assignee: Endo Vascular Intruments, Inc.
    Inventors: Gregory N. Nordgren, Thomas L. Kelly
  • Patent number: 5622188
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: April 22, 1997
    Assignee: Endovascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5571169
    Abstract: Methods of artificially lining a vessel, especially an artery, of a medical patient to address the existence of a flow-inhibiting atheroma and to significantly alleviate the probability of restenosis, and the resulting products.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: November 5, 1996
    Assignee: EndoVascular Instruments, Inc.
    Inventors: Mark Plaia, Vincent A. Reger, Gregory N. Nordgren
  • Patent number: 5511965
    Abstract: An apparatus for making extruded tubing having one or more lumens therein with a variable outer diameter. The apparatus is useful for forming tubing of an extrudable material such as an elastomer or thermoplastic. The extrudable material is forced around a mandrel and through a die aperture over a mandrel wherein the inside surface of the tubing is of uniform diameter along its length but the wall thickness varies throughout its length. Such an apparatus may be used, for example, to make kink-resistant tubing. In one embodiment, the aperture in the extrusion die has a variable diameter while the mandrel remains constant. In a second preferred embodiment, a moveable ring with a central aperture is disposed within the extrusion chamber coaxially with the mandrel. The ring is capable of reciprocal motion in the direction of extrusion. During extrusion, when the moveable ring is moved toward the die opening, it constricts the outer diameter of the tubing thus formed.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: April 30, 1996
    Assignee: Specialty Silicone Fabricators, Inc.
    Inventors: David B. Batdorf, Gregory N. Nordgren, Charles A. Schryver
  • Patent number: 5160325
    Abstract: Catheter tubes of elastomeric material having novel lumen shapes which prevent occlusion and accommodate continued liquid flow even when kinked. Also, catheter tube slit valves are disclosed, the walls of which are not chemically weakened. Symmetrical and asymmetrical versions of said slit valves are disclosed. Combinations of highly reliable slit valves and catheter tubes are disclosed. Independently operable multi-lumen catheter assemblies of synthetic material, such as silicone rubber are disclosed, wherein the distal end of each lumen is normally closed by a three-position slit valve formed in a catheter tube covering.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: November 3, 1992
    Assignee: C. R. Bard, Inc.
    Inventors: Colin J. Nichols, Gregory N. Nordgren, Harvey R. Moorehead