Retractable syringe sheath with bottle engagement

摘要

A safety hypodermic device includes a protective sleeve carried on the barrel of a syringe or the needle holder of an intravenous line. The sleeve has an extended position which envelops and protects the needle and a retracted position which exposes the needle for injection purposes. A coil spring carried on the barrel urges the sleeve toward the extended position. The open end of the sleeve may be provided with internal resilient tabs and a flange for receiving and grasping the head of a medicine bottle and for allowing the needle to penetrate the medicine bottle to the proper depth for filling. The spring may extend into the interior of the sleeve and abut against an internal rim of the sleeve. The plunger and barrel may be provided with tactile feedback to enable a visually impaired person to determine the amount of medicine being filled or dispensed.