Syringe which automatically make the hypodermic needle harmless after use
Patent 5084029 Issued on January 28, 1992. Estimated Expiration Date: 
July 17, 2010. 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.
July 17, 2010. 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 ReferencesAnti-stick contagion free disposable hypodermic safety syringe Cannula insertion set with safety retracting needle Retractable needle syringe Safety syringe Hypodermic syringe with retractable needle Patent #: 4955870 InventorsApplicationNo. 543816 filed on 07/17/1990US Classes:604/195, Portion of body entering conduit stored in material receiving syringe reservoir604/198Cover or protector for body entering conduit movable axially relative to one anotherExaminersPrimary: Yasko, John D.Foreign Patent References
International ClassA61M 005/00Foreign Application Priority Data1988-12-07 ITAbstractThe danger of hypodermic syringes is neutralized and they are made monouse by an arrangement including a needle (a), which shall be referred to as the perforated stiletto. This needle is provided with a female hook (k) and a cylindrical container (m), inserted coaxially in the piston rod (v) of the syringe. The cylindrical container can receive the perforated needle (a) by interacting with a male hooking pawl (n) and its support structure (o) and a cylindrical helicoidal pull string (q).Field of SearchPortion of body entering conduit stored in material receiving syringe reservoirCover or protector for body entering conduit movable axially relative to one another Injector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.) Having means for preventing reuse of device With piston or plunger for expelling material from body or injector reservoir | |
