Patents Assigned to Cobra, Inc.
  • Cannula needle for catheter
    Patent number: 4377165
    Abstract: A cannula needle for a catheter is provided from flat metal sheet blank stock. A groove of controlled depth is formed on the metal sheet which is then rolled to produce a hollow barrel having a slit parallel to the longitudinal axis; the barrel is then cut into individual needles. Gripping wings are then welded to each needle on either side of the slit in a separate operation.In use, when the wings are flexed, the needle will easily split in half along the groove. This enables the cannula to be separated from the catheter.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: March 22, 1983
    Assignees: Luther Medical Products, Inc., Cobra, Inc.
    Inventors: Ronald B. Luther, Peter F. Frey, Marshall F. Sparks