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Development of a simple compatibility inspection method using pressure in a BD PhaSeal™ system and hazardous drug vials

Background Many reports support the use of closed system drug transfer devices (CSTDs) to protect against exposure to hazardous drugs during their preparation. However, leakage may occur if the CSTD fails to maintain hermeticity when fitted into the vial. Our aims were to devise a measure to prevent HD exposure and to develop a test method to verify CSTD function when a BD PhaSeal™ protector is used in HD preparation. Methods We selected the BD PhaSeal™ System, which is the most commonly used CSTD device in Japan. The sealability of the BD PhaSeal™ protector and vial is considered to be due to the hermeticity of the protector and the rubber stopper of the vial. We constructed a protector with a damaged sealing rim and monitored the pressure fluctuation 10 times when the BD PhaSeal™ injector was connected to the pressurized vial. Results The reduction in pressure of the protector in the group without a damaged sealing rim was 5%, while that in the group with the damaged sealing rim was 84.9%. Conclusion It was suggested that leakage occurred through the gap between the protector and the rubber stopper when using a vial that was not in close contact with the sealing rim. In this study, we developed a test that can be easily used to verify the compatibility of the BD PhaSeal™ protector and a vial in the clinical setting. Thus, when new hazardous drugs are being prepared, these measures can be taken to ensure that the risk of exposure is reduced or eliminated.