Explanation

It is the main equipment of interventional radiology. According to the purpose of use, it can be divided into imaging catheter, drainage catheter, balloon dilation catheter, etc., which are respectively used for imaging, drainage, and dilation of narrow lumens. In contrast catheter, there are also those that have been molded at the factory, such as C-shaped catheter; The length, thickness, and shape of the drainage tube vary depending on the location and purpose of use, such as the drainage tube; Balloon catheter is only the difference between catheter diameter and balloon diameter. According to materials and composition, it can be divided into three categories: ordinary catheter, special catheter and other catheter. The development trend of medical catheter technology is mainly to develop completely new medical catheter materials, develop functional catheter and conduct surface modification of medical catheter materials. From the technical trend of developing completely new catheter materials, because silicone rubber has good histocompatibility and polyurethime has good Wood compatibility, and materials is relatively cheap and easy to process and shape, it has been affirmed through strict long-term verification, and it is difficult to generate suitable and better medical catheter materials from macromolecule materials, plastics and rubber, in the short term; From the perspective of the development trend of functional medical catheter technology, functional medical catheter is often combined with relatively single clinical application. Even though the technology is advanced, the amount of clinical use is relatively small and has little influence on the whole industry; From the perspective of the trend of surface modification technology of existing medical catheter materials, increasing lubricity can widely improve the clinical performance of medical catheter. Surface modification of anticoagulant function of medical catheter in contact with blood plays a very good role in promoting the development of interposition medicine, and increasing the antibacterial performance of external access catheter can reduce the risk of iatrogenic infection in clinical practice. Therefore, the surface modification of catheter is the research hotspot and development direction.

Classification