COUPLING FOR MEDICAL FLUID DELIVERY SYSTEMS

摘要

A coupling for a medical fluid delivery system for administering liquids to a patient includes male and female members, the female member (1) having an inwardly tapering socket (3) for receiving a complimentary tubular spigot (17) of the male member and having a liquid escape vent (9) for escape of liquid supplied from an incorrect or an incorrectly coupled male member. A collar (18) of the male member is threadedly engageable with a hub (2) of the female member for securing the members against disengagement, and the female member has a sleeve (5) with a pawl (6) which cooperates with ratchet teetch (20) on the collar to lock the collar against answering, the pawl being disengageable by squeezing the sleeve (5). The sleeve (5) has openings (8) to permit treatment of the hub and sleeve interior for destroying bacteria. The male member may be provided at the forward end of a syringe (34). The male and female members have in their gripping regions similar external profiles defined by radial wings (14, 25, 39) to provide a clear tactile indication that the correct parts are being used together.