Protector for self-retractile hypodermic needles
Patent 5232456 Issued on August 3, 1993. Estimated Expiration Date: 
May 22, 2012. 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.
May 22, 2012. 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 ReferencesDental syringe having an automatically retractable needle Retractable needle Disposable safety medical syringe Injection devices Patent #: 5104384 InventorApplicationNo. 887287 filed on 05/22/1992US Classes:604/192, Having cover or protector for body entering conduit604/198, Cover or protector for body entering conduit movable axially relative to one another604/263Removable cover or protector for body inserted conduitExaminersPrimary: Yasko, John D.Attorney, Agent or FirmInternational ClassA61M 005/32AbstractA protector for self-retractile hypodermic needles, the purpose of which is to hide and protect the needle used in injections, both before and after its use. Its basic features are a tubular body opened on both ends and cylindrical, at least inside, including an inner ring-shaped projection with minimum width and thickness, which holds the needle-holder. The body includes as well an expansion spring placed between the end projection of the needle-holder provided to be held against the inner projection of the tubular body, and the strangled front end of the latter. The spring pushes the needle-holder in, hiding the needle, once the syringe has been used for an injection. The tubular body is provided with elongated side windows to simultaneously hold both the tubular body and the syringe during use.Field of SearchRemovable cover or protector for body inserted conduitCover or protector for body entering conduit movable axially relative to one another Portion of body entering conduit stored in material receiving syringe reservoir Having cover or protector for body entering conduit Having means for preventing reuse of device Injector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.) Material reservoir (e.g., cartridge, etc.) removably mounted in syringe | |
