Patents by Inventor Douglas F. Walker

Douglas F. Walker 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).

  • Patent number: 7488305
    Abstract: A catheter handpiece apparatus and method for delivering a desired dose with minimal potential for contamination of the injected substance and rapid, accurate delivery of the desired dose. In one embodiment, a carriage assembly affixed to an inner lumen is slidably located within a handpiece housing equipped with an outer lumen. The carriage assembly receives a dose carpule. An actuator knob cocks the carriage assembly and a spring-powered actuator mechanism. After the catheter is maneuvered to a desired injection site and a desired dose is set, depressing a first trigger causes the inner lumen tip to extend beyond the outer lumen into the injection site. Depressing a second trigger causes the actuator mechanism to push the desired dose from the dose carpule through the inner lumen into the injection site. A second embodiment provides a catheter handpiece with a carriage assembly cocking lever and an operator-powered dose delivery mechanism.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: February 10, 2009
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Timothy J. Mickley, Bruce Arthur Christie, Douglas F. Walker, Jeremy L. Connell
  • Patent number: 6802824
    Abstract: A catheter handpiece apparatus and method for delivering a desired dose with minimal potential for contamination of the injected substance and rapid, accurate delivery of the desired dose. In one embodiment, a carriage assembly affixed to an inner lumen is slidably located within a handpiece housing equipped with an outer lumen. The carriage assembly receives a dose carpule. An actuator knob cocks the carriage assembly and a spring-powered actuator mechanism. After the catheter is maneuvered to a desired injection site and a desired dose is set, depressing a first trigger causes the inner lumen tip to extend beyond the outer lumen into the injection site. Depressing a second trigger causes the actuator mechanism to push the desired dose from the dose carpule through the inner lumen into the injection site. A second embodiment provides a catheter handpiece with a carriage assembly cocking lever and an operator-powered dose delivery mechanism.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: October 12, 2004
    Assignee: SciMed Life Systems, Inc.
    Inventors: Timothy J. Mickley, Bruce Arthur Christie, Douglas F. Walker, Jeremy L. Connell
  • Publication number: 20030233076
    Abstract: A catheter handpiece apparatus and method for delivering a desired dose with minimal potential for contamination of the injected substance and rapid, accurate delivery of the desired dose. In one embodiment, a carriage assembly affixed to an inner lumen is slidably located within a handpiece housing equipped with an outer lumen. The carriage assembly receives a dose carpule. An actuator knob cocks the carriage assembly and a spring-powered actuator mechanism. After the catheter is maneuvered to a desired injection site and a desired dose is set, depressing a first trigger causes the inner lumen tip to extend beyond the outer lumen into the injection site. Depressing a second trigger causes the actuator mechanism to push the desired dose from the dose carpule through the inner lumen into the injection site. A second embodiment provides a catheter handpiece with a carriage assembly cocking lever and an operator-powered dose delivery mechanism.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 18, 2003
    Inventors: Timothy J. Mickley, Bruce Arthur Christie, Douglas F. Walker, Jeremy L. Connell
  • Patent number: 6287041
    Abstract: An adapter for attaching to the edge of a door, such as a freezer door, to permit coupon dispensers, display devices and the like to be mounted to the edge of the door. The adapter is held in place with a clamp that bears against the door handle. The adapter includes a mounting plate perpendicular to the door so that a coupon dispenser or other display device can be mounted substantially parallel to the door. The mounting plate includes a portion of a price rail so that the same coupon dispensers and mounting brackets used with grocery shelves may also be used with the present invention. The price rail may be a separate piece that is welded to the mounting plate or formed from the same piece of material as the mounting plate.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: September 11, 2001
    Assignee: News America FSI, Inc.
    Inventors: Francis Dudley, Douglas F. Walker
  • Patent number: D376207
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: December 3, 1996
    Assignee: Alcon Laboratories, Inc.
    Inventors: Mark Buczek, Bruno Dacquay, James R. Dennewill, K. Allen Le, Leonard Rodriguez, Philip J. D'Almada Remedios, Douglas F. Walker
  • Patent number: D389723
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: January 27, 1998
    Assignee: Printrak International, Inc.
    Inventors: Raymond C. Godard, Gilbert Cardwell, Philip J. Remedios, Douglas F. Walker, Daniel J. Driscoll, Eliseo R. Ranalli
  • Patent number: D776055
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: January 10, 2017
    Assignee: Nidec Motor Corporation
    Inventors: Craig E. Wallace, Douglas F. Walker, Jason D. LeBloch, Jonathan R. Lucas, John Scott Lee, Scott J. Durfee