Non-reusable syringe for medical purposes
Patent 5328484 Issued on July 12, 1994. Estimated Expiration Date: 
July 30, 2013. 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 30, 2013. 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 References 1592462 2457859 2474496 2502639 2828743 3320954 3478937 Syringe with retractable cannula Disposable syringe Self-resheathing needle assembly InventorsApplicationNo. 099597 filed on 07/30/1993US Classes:604/195, Portion of body entering conduit stored in material receiving syringe reservoir604/110, Having means for preventing reuse of device604/196, And extended therefrom by piston when syringe is used604/208Including means for controlling piston stroke lengthExaminersPrimary: Rosenbaum, C. FredAssistant: Wilkens, III, Frank Attorney, Agent or FirmForeign Patent References
International ClassesA61M 005/32A61M 005/00 Foreign Application Priority Data1992-08-12 CHAbstractA syringe comprises a cylindrical body (1), a plunger (11, 15) movable linearly in the body (1), a needle carrier (28) also movable linearly in the body (1) and relatively to the plunger (11, 15) and a needle (24). The needle (24) before the use of the syringe is disposed inside a watertight cylinder (1) and is mounted on the needle carrier through a coupling of the snap on type which makes possible its separation from the needle carrier. The body (1) of the syringe is obturated at its distal end by a closing member (4) provided with an elastomeric plug (9) which can be perforated by the needle. The needle carrier (28) and the distal closing member (4) are provided with a coupling (31, 10) which cannot disengage once engaged. The rear end of the needle (24) and the plunger (11, 15) have a snap on coupling (20, 26) which cannot disengage once engaged. The minimal distance between the plunger (11, 15) and the needle carrier (28) is determined by a member (29), the resistance of which to compression is lesser in the moist or wet state than in the dry state.Field of SearchHaving means for preventing reuse of devicePortion of body entering conduit stored in material receiving syringe reservoir And extended therefrom by piston when syringe is used Removable cover or protector for body inserted conduit Including means for controlling piston stroke length Removable plug | |
