Central venous catheterThe products are divided into standard packaging and composite packaging. The components include: central venous catheter (with sliding buckle), puncture needle, guide wire (including disposable guide wire control handle), dilator, disposable sterile syringe, and disposable Bacteria injection needle, mobile clamp (mobile inner and mobile outer clamp), disposable sterile infusion connector, sterile plastic handle scalpel, disposable sterile rubber surgical gloves, sterile brush, gauze block (surgical gauze dressing), Cotton balls (medical absorbent cotton products), disposable medical bills, disposable sterile orifice towels, suture needles with thread, pasting wound dressings, disposable catheter fixing wings (optional). In addition, the central venous catheter and accessories should have a tray that can prevent the equipment from colliding with each other.