Patents Assigned to William P. Waters
  • Catheter/heparin lock and method of using same
    Patent number: 4954130
    Abstract: An improved intravenous catheter/heparin lock combination having a tip, a body, an IV port and a movable hollow plug; the exterior of the plug having a self-sealing membrane through which needles may be inserted. The plug is movable within the body so as to function as a valve in relation to fluid flow through the port.A method of using the combination wherein the plug may be positioned to control fluid flow through the port and medications may be administered by needle through the plug independently of fluid flow through the port.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: September 4, 1990
    Assignee: William P. Waters
    Inventor: John Edwards