Syringe fitted with a clamping device for the needle and with means to enable the needle to be automatically retractable into the syringe body at the end of an injection
Patent 5201710 Issued on April 13, 1993. Estimated Expiration Date: 
March 4, 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.
March 4, 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 ReferencesOne-time use medical syringe invention Needle bearing medical device with three-position shield Retractable needle hypodermic syringe system Disposable syringe with automatic needle retraction Single-use safety syringe Safety syringe with retractable needle Safety syringe Patent #: 5084018 InventorApplicationNo. 845965 filed on 03/04/1992US Classes:604/110, Having means for preventing reuse of device604/195Portion of body entering conduit stored in material receiving syringe reservoirExaminersPrimary: Yasko, John D.Attorney, Agent or FirmForeign Patent References
International ClassA61M 005/00Foreign Application Priority Data1991-05-29 EPAbstractA syringe fitted with a clamping device for the needle and with means to enable the needle to be automatically retractable into the syringe body at the end of an injection comprises: outer and inner cylinders; openings at the ends of the outer cylinder; a third opening at an end of said inner cylinder; closing means for said third opening; a needle with a head; sealing means in said closing means; a first spring to push said needle against said closing means; a clamping device loaded by a second spring to maintain outward said syringe and to release said needle; a diaphragm in said closing means which bends before its breaking; a sharp element to break said diaphragm; closing means to prevent said needle from being reached and stopping means to prevent said second cylinder from being moved outward said syringe after its use.Field of SearchHaving means for preventing reuse of deviceInjector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.) Portion of body entering conduit stored in material receiving syringe reservoir Cover or protector for body entering conduit movable axially relative to one another Removable cover or protector for body inserted conduit | |
