Package for medical devices including a pinch-open closure

A package for at least one medical device comprising a vascular access device, a disposable syringe, and/or a prefilled syringe, the package comprising:

• a flexible body configured to contain the at least one medical device and to transition between a collapsed configuration and an expanded configuration, the flexible body comprising an open first end, a closed second end, and sides extending between the first end and the second end;
• and
• a closure connected to the flexible body comprising:
• a first end,
• a second end,
• at least one slit extending at least partially between the first end and the second end of the closure,
• a first buckling portion on one side of the at least one slit, and
• a second buckling portion on an opposing side of the at least one slit, wherein the buckling portions define an opening with longitudinal sides that are angled outwardly relative to a longitudinal axis of the closure, such that, for each longitudinal side, a shortest distance between an intermediate point of the longitudinal side and the longitudinal axis of the closure is greater than a shortest distance between ends of the longitudinal sides and the longitudinal axis of the closure,
• wherein the closure is configured to transition between a first configuration, in which the closure retains the flexible body in the collapsed configuration preventing removal of the at least one medical device from the flexible body through the open first end, and a second configuration, which permits removal of the at least one medical device from the flexible body through the at least one slit of the closure, upon application of a biaxial force to the first end and the second end of the closure, which causes the flexible body to transition to the expanded configuration.