Back to results
US 2002/0177818 A1Published application
Needle guard
AssigneePatricia B. Vaillancourt
InventorVincent L. Vaillancourt
Life of this patent
Estimating the term…
Abstract
A plastic needle guard is mounted on a hub in which a needle is secured. In order to cover the end of the needle, the needle guard is slid manually off the hub and over the end of the needle to position the needle end within the guard. A washer that is loosely mounted within the guard and through which the needle passes drops off the end of the needle to block any return movement of the needle out of the guard. Other embodiments use lock-type washers to prevent a return movement of the needle.
Claims1
A needle guard comprising
- a plastic hollow housing having an opening at one end for passage of a needle;
- a lock ring mounted in said housing and having an aperture for passage of the needle therethrough;
- a centering washer mounted in said housing and having an aperture for passage of the needle therethrough;
- a float washer disposed in said housing between said centering washer and said one end of said housing and having an aperture for passage of the needle therethrough;
- said float washer being of a reduced size whereby upon withdrawal of the needle therethrough said float washer moves out of alignment with said opening in said one end of said housing to block a return movement of the needle.
2 more elements
Dependencies are inferred from the claim text.