| US 7,462,169 B2 | ||
| Safety shield system for an injection pen needle | ||
| Mark A. Follman, New Jersey, N.J. (US); David R. Stonehouse, Cambridge (United Kingdom); and Michael J. Newman, Hunsdon Ware Herts (United Kingdom) | ||
| Assigned to Becton, Dickinson and Company, Franklin Lakes, N.J. (US) | ||
| Filed on Jan. 23, 2007, as Appl. No. 11/626,209. | ||
| Prior Publication US 2008/0177238 A1, Jul. 24, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A61M 5/32 (2006.01) | ||
| U.S. Cl. 604—198 [604/192] | 8 Claims |
| 1. A safety shield system for an injection pen needle comprising:
a needle hub;
a needle mounted in the hub and having an injection end and a non-injection end, wherein the hub has a first recess surrounding
the injection end of the needle and a second recess surrounding the non-injection end of the needle to receive a pen-injector;
a first shield moving coaxially over the first recess of the hub and having an aperture in an end wall thereof for passage
of the needle, and traveling from a retracted position in which the needle is exposed to a full travel position in which the
shield covers the injection end of the needle;
a second shield moving within the second recess of the hub and having an aperture to permit passage of the non-injection end
of the needle into the pen-injector, and traveling inside the second recess from a position in which the pen injector is installed
in the hub to a full travel position in which the pen injector is removed from the hub and the second shield covers the non-injection
end of the needle;
a first elastic member housed between the first shield and the hub, engaging the first shield to hold the first shield in
the full travel position;
a second elastic member housed between the second shield and the hub, engaging the second shield to hold the second shield
in its full travel position; and wherein
the first elastic member is a clip positioned against the hub and having a tab that in a locked position engages aligned slots
in both the radial wall of the hub and the radial wall of the first shield.
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