The device and manner in order to maintain sterile catheter environment. The device in order to maintain the sterile catheter environment of this disclosure with one typical execution configuration, as for the device, the first and second housing to be concatenated with one coupler at least at least mutually, when being closing layout, engage mutually, when being closing layout, in order to demarcate the internal space, the first housing which is formed and the second housing, and the first housing and at least to include one where the second housing is demarcated at least in one opening and/or the notch, the aforementioned opening and/or as for the notchIt has reached size and the kind of form which can lay out at least the portion of the catheter through there.< Choice figure >Figure 2F無菌カテーテル環境を維持するための装置および方法。本開示の無菌カテーテル環境を維持するための装置の少なくとも一つの典型的実施形態では、装置は、第一と第二のハウジングが少なくとも一つのカプラーで互いに連結されており、閉鎖配置にある時に互いに係合し、閉鎖配置にある時に内部空間を画定するように構成された第一のハウジングおよび第二のハウジング、および第一のハウジングと第二のハウジングの少なくとも一つの中に画定された少なくとも一つの開口部および/またはノッチを含み、前述の開口部および/またはノッチはそこを通してカテーテルの少なくとも一部を配置できるような寸法と形状になっている。【選択図】図2F