Medical catheters and tubing are used in a wide range of clinical applications, including vascular access, drug delivery, and fluid management. These components require precise, biocompatible joints that are smooth, internal-burr-free, and leak-proof to ensure patient safety and comfort. Traditional welding methods may produce internal burrs that can damage blood vessels or tissue, or cause leaks that lead to fluid loss or contamination. DaokeDao plastic laser welding provides smooth, internal-burr-free welds that ensure good fluid flow and patient safety. The non-contact process focuses laser energy precisely on the weld joint, avoiding internal burrs and maintaining the inner diameter of catheters and tubing. It achieves reliable leak-proof seals that meet medical standards, preventing fluid leakage and contamination. The process is compatible with medical-grade plastics commonly used in catheters and tubing, including PE, PP, PVC, and PTFE, all of which meet biocompatibility standards. Our laser systems feature micron-level positioning accuracy, enabling precise welding of small-diameter and thin-wall structures (down to 0.5mm diameter). They support the mass production of catheters and tubing with consistent quality, helping medical device manufacturers improve product reliability and patient comfort.