Patents by Inventor Douglas Owen Hankner

Douglas Owen Hankner 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).

  • Catheter for target specific drug delivery
    Patent number: 7153292
    Abstract: A medical catheter comprising a proximal end having an opening for fluid containing a therapeutic drug, a distal end, the distal end defining at least one opening, and a porous portion covering the opening defined by the distal end. In one embodiment, the medical catheter comprises a proximal end having an opening for fluid containing a therapeutic drug, at least two distal ends, the proximal end connected to the two distal ends with a connector, the distal ends each defining at least one opening, a diffuser covering the opening of each distal end, and a separate restrictor downstream of the connector and upstream of each distal end to provide substantially equal flow through each distal end. An additional restrictor can also be placed upstream of the connector. In another embodiment, a combination diffuser and restrictor covers the opening of each distal end.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: December 26, 2006
    Assignee: Medtronic, Inc.
    Inventors: Mary M Morris, Douglas Owen Hankner
  • Catheter for target specific drug delivery
    Patent number: 6945969
    Abstract: A medical catheter comprising a proximal end having an opening for fluid containing a therapeutic drug, a distal end, the distal end defining at least one opening, and a porous portion covering the opening defined by the distal end. In one embodiment, the medical catheter comprises a proximal end having an opening for fluid containing a therapeutic drug, at least two distal ends, the proximal end connected to the two distal ends with a connector, the distal ends each defining at least one opening, a diffuser covering the opening of each distal end, and a separate restrictor downstream of the connector and upstream of each distal end to provide substantially equal flow through each distal end. An additional restrictor can also be placed upstream of the connector. In another embodiment, a combination diffuser and restrictor covers the opening of each distal end.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: September 20, 2005
    Assignee: Medtronic, Inc.
    Inventors: Mary M. Morris, Douglas Owen Hankner
  • Catheter for target specific drug delivery
    Publication number: 20040199128
    Abstract: A medical catheter comprising a proximal end having an opening for fluid containing a therapeutic drug, a distal end, the distal end defining at least one opening, and a porous portion covering the opening defined by the distal end. In one embodiment, the medical catheter comprises a proximal end having an opening for fluid containing a therapeutic drug, at least two distal ends, the proximal end connected to the two distal ends with a connector, the distal ends each defining at least one opening, a diffuser covering the opening of each distal end, and a separate restrictor downstream of the connector and upstream of each distal end to provide substantially equal flow through each distal end. An additional restrictor can also be placed upstream of the connector. In another embodiment, a combination diffuser and restrictor covers the opening of each distal end.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 7, 2004
    Applicant: Medtronic, Inc.
    Inventors: Mary M. Morris, Douglas Owen Hankner
  • Occlusion resistant medical catheter with flexible core
    Publication number: 20030216700
    Abstract: A medical catheter comprising a flexible tube having an outer wall and an inner wall, the inner wall defining a lumen, the lumen extending longitudinally along the flexible tube and having a cross-sectional area; and a flexible core within the lumen substantially extending longitudinally along the flexible tube, the flexible core having a cross-sectional area smaller than the cross-sectional area of the lumen at any given longitudinal point along the flexible tube and flexible core, the flexible tube and the flexible core defining a passageway, and which in combination provides structure resistant to occlusion of the passageway.
    Type: Application
    Filed: June 17, 2003
    Publication date: November 20, 2003
    Applicant: Medtronic, Inc.
    Inventors: Robert Mark Pearson, Mary M. Morris, Douglas Owen Hankner
  • Catheter for target specific drug delivery
    Patent number: 6551290
    Abstract: A medical catheter comprising a proximal end having an opening for fluid containing a therapeutic drug, a distal end, the distal end defining at least one opening, and a porous portion covering the opening defined by the distal end. In one embodiment, the medical catheter comprises a proximal end having an opening for fluid containing a therapeutic drug, at least two distal ends. the proximal end connected to the two distal ends with a connector, the distal ends each defining at least, one opening, a diffuser covering the opening of each distal end, and a separate restrictor downstream of the connector and upstream of each distal end to provide substantially equal flow through each distal end. An additional restrictor can also be placed upstream of the connector. In another embodiment, a combination diffuser and restrictor covers the opening of each distal end.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: April 22, 2003
    Assignee: Medtronic, Inc.
    Inventors: Dennis D. Elsberry, Chris Christiansen, Mary M. Morris, Douglas Owen Hankner, Robert Cushing Hamlen