Described is a needle assembly magazine comprising of a housing adapted to contain a plurality of needle assemblies and a slider movably disposed within the housing. The housing has a first opening providing access to an unused needle assembly and a second opening for receiving into the housing a used needle assembly. The slider separates the housing into a first region for unused needle assemblies and a second region for used needle assemblies. Movement of the slider advances the unused needle assemblies within the housing toward the first opening.