Infusion connectors are commonly used infusion add-on devices in clinical practice, including ordinary heparin caps and needleless infusion connectors.

Ordinary heparin cap is mainly composed of tightening seat and film, can withstand repeated puncture of multiple infusions to ensure no leakage, clinically generally matched with arteriovenous indwelling needles, can be punctured multiple times, repeated punctures for infusion, injection of drugs. During the infusion process, since the heparin cap needs to be repeatedly puncture with a scalp needle, the particles fall off and enter the blood circulation, which is easy to bring the risk of potential infection and increase the risk of occupational exposure of nursing staff.

A needleless infusion system is a type of device designed to repeatedly deliver or draw liquid to an infusion line without needling, enabling one-way or two-way flow of liquid, which allows the user to administer or withdraw liquid. One of the important components of a needleless infusion system is a needleless infusion connector, which eliminates the connection of the steel needle puncture rubber stopper and connects the infusion set or syringe to the indwelling cannula, including CVC, PICC and peripheral intravenous catheters; change the needle injection to a needleless injection system, and maintain the closing function of the infusion channel after the infusion set or syringe is disconnected. Needleless infusion connectors can avoid repeated punctures with needles and reduce stab injuries to healthcare personnel.

In 2013, China's hygiene industry standard WS/T433-2013 "Technical Operation Code for Intravenous Nursing Care" was issued (implemented since May 1, 2014), which included needleless infusion into the operating specifications and promoted the rapid development of the domestic needleless infusion connector market. Internationally, the 2016 U.S. INS Standards of Practice for Intravenous Infusion Nursing emphasized needleless infusion as a safety concept. With the improvement of the living standards of Chinese, the deepening of medical insurance work, and the continuous enhancement of residents' safety awareness, the utilization rate of needleless infusion connectors in intravenous infusion therapy has gradually increased, from 7.5% in 2013 to 74.63% in 2019.