The present invention refers to improvements in disposable items, particularly self-destructing or otherwise automatically non-reusable hypodermic syringes having a self-destructing element which is actuated during the injection stroke of the piston. The invention provides an upper stop member, generally provided by a plate with a circular hole having a diameter permitting withdrawal of the plunger but not the piston and also a cylindrical protuberance adjacent the injection end of the cylinder and extending beyond the cylindrical wall so as to shield the fingers of the user from a self-destructing pin forced through the bottom wall of the cylinder under completion of the injection stroke. A cover plate for said cylindrical protuberance having an interior hole for the injection needle is also shown.
展开▼
