The core components include a soft catheter/cannula that can be left in the blood vessel and a stainless steel puncture guide core. The Vein Detained Needle consists of a stainless steel core, a soft outer cannula, and a plastic needle holder.
The indwelling needles are divided into open and closed types, open types are divided into regular and safety (anti-needle-stick injury) types, and closed types are divided into regular and safety (anti-needle-stick injury) types. When using intravenous indwelling needles, aseptic technical operation procedures must be strictly implemented.
Expanded information
In 1962, the German company Beltran invented the first indwelling needle "Braunüle". in the early 80's, intravenous indwelling needles entered the developed countries and regions of Asia; in the 90's, the open-type indwelling needles were the first to enter the Chinese operating room, and since then, due to the development of the open-type indwelling needle, it has been the first to enter the Chinese operating room. In the 1990s, the open needle was the first to enter the operating room in China, and since then, because of its ability to reduce the pain of multiple punctures compared to ordinary steel needles, it has been widely used in pediatrics, and has gradually influenced other departments in the inpatient wards.
The design of indwelling needles has evolved from open to airtight, and from normal to needlestick-safe. Catheter materials for indwelling needles have also changed from ordinary polyplastics to TEFLON to polyurethane (represented by BD Vialon).
The connector of the indwelling needle has also progressed from the open needle without connector to the closed needle with heparin cap with connector, to the needleless positive pressure connector: the mechanical valve needleless positive pressure connector and the diaphragm needleless connector. The history of the indwelling needle is also the history of its core components, including the catheter material, the infusion connector, and the features that prevent blood exposure and needlestick injuries.
Baidu Encyclopedia - Intravenous Indwelling Needle