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US 7,540,858 B2Granted
Retracting safety pen needle
AssigneeBecton, Dickinson and Company
InventorMichael A. DiBiasi
Life of this patent
Estimating the term…
Abstract
A retracting safety injector pen needle has the needle mounted on a carrier which is movable with respect to the hub, so that the non-patient end of an injection pen needle device is retracted into the hub after an injection for safety.
Claims8
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.
4 more elements
Dependencies are inferred from the claim text.