Vial adapter having a needleless valve for use with vial closures of different sizes having a rigid set of claws

摘要

A vial adapter (21) to interconnect with closures bottle for drugs of different diameters, each closure stamp, comprising the vial adapter: An adapter housing (23) having a first end (25) with an inner periphery (67) and a circular claws (97) extending radially inwardly from the inner periphery (67), and having a second end (35), the adapter housing (23) having a thickness at the inner periphery series (67); including the first end (25) a base (61) with a pointed central cannula (33) extending from the base; characterized in that the circular set of claws (97) comprises a first set of claws (29), each of which has a first length and a second set of claws (31), each of which has a second length that is greater than the first length; wherein each claw of the second set of claws (31) is thinner than the inner periphery (67) and plastic deformation of the second set of claws (31) occurs at a point in the second set of claws (31 ) are attached to the inner periphery (67) so that, when the adapter (21) is located on a closure exceeding a selected diameter, each of the second set of claws (31) is deflected upon contact with the closure and it deforms plastically, allowing the claws (31) deflect sufficiently to accommodate the larger closure; and a valve needle (37) comprising a valve housing (49) within which a deformable piston element (45) providing a flow path of fluid through its interior is disposed element having piston (45) an open hole naturally (47) in which the hole is closed to prevent fluid flow when not accessed to the valve needle (37) and wherein the hole (47) opens to its open form of naturally allowing fluid flow when the valve browsing (37).