Patents by Inventor Mark R. Leadbetter

Mark R. Leadbetter 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: 4932945
    Abstract: A disposable, shielded catheter-cannula insertion needle wherein a catheter-cannula assembly is detachably connected to the distal end of a housing having a piston assembly slidably mounted therein. The insertion needle extends through the catheter-cannula and is connected to the piston assembly. A stem, including a cap, is detachably connected to the housing to provide a cover for the catheter-cannula and connectable to the piston assembly for drawing the contaminated insertion needle into a shielded position within the housing. The catheter-cannula assembly includes a self-sealing bushing for closing the flow-through passage in the catheter-cannula when the insertion needle has been removed therefrom.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: June 12, 1990
    Inventors: Paul A. Braginetz, Mark R. Leadbetter, Joseph A. Peduto
  • Patent number: 4888002
    Abstract: A disposable shielded medical syringe wherein the contaminated needle is connected to a piston slidably mounted in the syringe barrel. The syringe plunger piston is threadably connectable to the needle piston for pulling the contaminated needle into the barrel to the shielded position. The syringe plunger is disconnectable from the plunger piston after the needle has been moved to the shielded position and a cap is insertable into the open end of the syringe barrel to completely enclose the contaminated needle.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: December 19, 1989
    Inventors: Paul A. Braginetz, Mark R. Leadbetter, Joseph Peduto
  • Patent number: 4883471
    Abstract: A disposable shielded medical syringe wherein the contaminated needle is drawn into the syringe barrel and a cap or scabbard is insertable into the open end of the syringe barrel to completely enclose the contaminated needle. A spring clip is mounted on the proximate end portion of the syringe barrel providing a stop member to prevent the syringe plunger from being pulled completely out of the barrel.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: November 28, 1989
    Inventors: Paul A. Braginetz, Mark R. Leadbetter, Joseph A. Peduto