Product features and scope of use: This product adopts imported silicon capsule and advanced flow control technology, which has the characteristics of stable flow, flexible use and free from any electromagnetic interference. Patients can add additional dose control according to their own conditions to truly achieve the purpose of individualized medication. Mainly applicable to the following scope: Subcutaneous, intravenous and epidural sedatives, local anesthetics, etc. (postoperative analgesia, chronic pain, herpes zoster, cancer pain, painless childbirth, etc.) are given. Intravenous and arterial injections of anticancer drugs and advanced antibiotics. Other types of continuous drug injections. Product structure and method of use: The disposable infusion pump product consists of a one-way valve dosing device, an elastic liquid storage device, a liquid medicine filter, a flow limiting device, a self-control liquid feeding device, a pipeline and an outer cone joint.