Needleless dosing device with infusion device without positive / negative pressure

摘要

The present invention provides a needleless dispenser equipped with an infusion device that does not generate positive and negative pressures and can prevent problems of blood and drug backflow and residuals in a patient. A cover body 1 having a medication port, a connector 2 having a storage chamber, and a positive / negative pressure-free infusion device 3 provided in the cover body and the connector storage chamber are included. The infusion device includes a first fitting component 31, a second fitting component 32, and an infusion component 33 inserted between them, and the first fitting component and the second fitting component are connected to the medication port 10. By being compressed and deformed by the injection head of the syringe, the infusion part is repeatedly connected or closed, thereby achieving a drug flow that does not generate positive and negative pressure. A good closed condition is achieved during normal times, making it difficult for outside contamination to enter and reducing the chances of patient infection. [Selection] Figure 2