Disposable indwelling needles are medical devices used to establish intravenous channels in patients for infusion, blood transfusion, drug injection and monitoring. Used in conjunction with infusion sets and blood transfusion sets, it can be left in blood vessels for a period of time and used for puncture and input of human fluids, blood collection, or arterial blood pressure monitoring and continuous arterial blood gas monitoring.
It usually consists of an elastic drug storage bag (without drug), a dosing device, an extension tube and a flow rate controller. Mechanical elasticity is used as kinetic energy to provide power for the pump body. Supplied sterile for single use.