Patents Assigned to Sherwood Medical Co.
  • Patent number: 4838870
    Abstract: A needle attachment to be removably attached to the distal end of a syringe cylinder. The needle attachment comprises a needle carrying hub and a coaxially aligned hypodermic needle which is retained by friction within a hole extending through the hub. The needle includes a needle stop to prevent the detachment of the needle from the hub in a distal direction through the hole. The needle terminates at a needle catch that is spaced inwardly from the distal end of the cylinder. A piston assembly having a needle capturing receptacle located at one end thereof moves axially and distally through the syringe cylinder to expulse fluid medication and to selectively engage the needle catch of the hypodermic needle at the most distal aspect of the cylinder. The piston assembly is then moved axially and proximally through the syringe cylinder to detach the hypodermic needle from the needle carrying hub and relocate said needle from the distal end to a relatively proximal position within the cylinder.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: June 13, 1989
    Assignee: Sherwood Medical Co.
    Inventors: Terry M. Haber, Jack E. Maze, Roger R. Crouse
  • Patent number: D293215
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: December 15, 1987
    Assignee: Sherwood Medical Co.
    Inventors: Robert H. Bruno, Laurie J. Burger, Stuart Kipperman, Geoffrey R. Mayer, Donald E. Protzmann, Robert F. Uhl