Butterfly assembly with retractable needle cannula
April 18, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSyringe with retractable cannula Disease control syringe having a retractable needle Disposable safety syringe having means for retracting its needle cannula into its medication cartridge Retracting hypodermic needle Removable needle attachment having a detachable needle Disposable syringe Disposable syringe with retractable needle Fluid passing apparatus with means for covering the same Retractable intravenous needle assembly Safety needle syringe InventorApplicationNo. 424942 filed on 04/18/1995US Classes:604/198, Cover or protector for body entering conduit movable axially relative to one another128/919, Syringe, means to protect user604/110, Having means for preventing reuse of device604/177, And used as conduit manipulator (e.g., foldable gripper wings, etc.)604/192, Having cover or protector for body entering conduit604/263Removable cover or protector for body inserted conduitExaminersPrimary: Green, Randall L.Assistant: Van Over, Perry E. Attorney, Agent or FirmInternational ClassA61M 005/32AbstractA butterfly needle system provides a housing including a hollow central hub and a winged extension projecting from each side of the hub. The central hub has front and rear ends and a clip opening on an outer surface thereof. The needle cannula has a sharpened first end and extends axially through the central hub. A retaining clip is disposed on the outer surface of the central hub and extends at least partially through the clip opening. When the needle cannula is positioned in the normal extended position with the sharpened first end extending through the forward end of the hub, a lower terminal end of the retaining clip is held biased against the needle cannula. When the needle cannula is positioned in a retracted position with the sharpened first end housed within the central hub, the lower terminal end of the retaining clip is disposed in an active position adjacent the inner wall surface of the hub generally opposite to the clip opening. The needle cannula in the retracted positioned is disposed rearward of the clip opening in the central hub and the retaining clip disposed in the active position extends substantially through the vertical plane of the central hub to thereby retain the needle cannula within the central hub.Field of SearchCover or protector for body entering conduit movable axially relative to one anotherHaving cover or protector for body entering conduit Having means for preventing reuse of device Removable cover or protector for body inserted conduit And used as conduit manipulator (e.g., foldable gripper wings, etc.) Syringe, means to protect user | |
