| US 7,540,858 B2 | ||
| Retracting safety pen needle | ||
| Michael A. DiBiasi, West Milford, N.J. (US) | ||
| Assigned to Becton, Dickinson and Company, Franklin Lakes, N.J. (US) | ||
| Filed on Jan. 23, 2007, as Appl. No. 11/626,236. | ||
| Prior Publication US 2008/0177235 A1, Jul. 24, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A61M 5/32 (2006.01) | ||
| U.S. Cl. 604—192 | 8 Claims |
| 1. A non-injection end passive safety system for an injection pen needle, comprising:
a) a needle having an injection end and a non-injection end;
b) a hub;
c) a needle carrier situated in and moving coaxially with respect to the hub and firmly securing the needle;
d) a shield having a travel element engaging a corresponding element on the carrier permitting axial movement of the shield
with respect to the carrier, said travel element engaging a locking element on the carrier to lock the shield in a position
covering the injection end of the needle;
e) a shield return spring biasing the shield in a direction away from the carrier toward the injection end of the needle;
f) a carrier activation spring biasing the carrier in a direction away from the hub in a direction toward the injection end
of the needle;
wherein the carrier moves the needle toward the injection end and into the hub, effectively storing the needle within the
hub to safely shield the non-injection end of the needle after an injection.
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