A three-way stopcock is a type of medical flow control valve. Its core function is to regulate or switch the direction of liquid flow within infusion pathways. By rotating the internal valve core, it enables different combinations of flow directions between three ports. This design provides a flexible liquid pathway management solution for clinical use, and it is particularly indispensable in scenarios such as multiple drug administration, blood sampling, or pressure monitoring.

Understanding Scalp Vein SetScalp vein set, commonly referred to as winged infusion set, is a medical device specifically designed for puncturing superficial veins, particularly in areas such as the scalp, the back of the hand, or the wrist. Its primary purpose is to facilitate intravenous injection

A disposable infusion pump is a medical device designed for single-use application, used to deliver liquid medications slowly into the body. It requires no external power supply or connection and relies on an internal elastic reservoir to control the infusion rate through self-generated pressure. This device is also known as an elastomeric infusion pump, as its core mechanism depends on elasticity to enable continuous fluid delivery.

A dressing kit refers to an integrated component set containing the sterile items required for wound management. Its core purpose is to provide a clean and isolated environment that facilitates wound healing. Such packaging ensures convenient operation by assembling key consumables into a single-use unit. The essential design principle lies in efficient protection, effectively blocking contaminants from entering the wound site.

Epidural anesthesia is a regional anesthetic technique that involves injecting local anesthetic into the epidural space of the spine to block nerve signal transmission, thereby alleviating pain or inducing anesthesia. This method is commonly used to manage pain in the lower part of the body.