1
Vincent L Vaillancourt: Post-injection needle sheath. Ralph R Roberts, February 16, 1988: US04725267 (259 worldwide citation)

A post-injection needle sheath for enclosing the sharpened end of a needle used with a syringe is shown with and without spring actuation. This sheath is initially in a compact and secured condition on the needle hub and has a substantial portion of the needle exposed for insertion into a patient or ...


2
Vincent L Vaillancourt: Post-injection needle sheath. Kenyon & Kenyon, February 14, 1989: US04804371 (112 worldwide citation)

A post-injection needle sheath for enclosing the sharpened end of a needle used with a syringe is shown with and without spring actuation. This sheath is initially in a compact and secured condition on the needle hub and has a substantial portion of the needle exposed for insertion into a patient or ...