Solution

Email:cynthiazheng@dpxlaser.com
Address: Room 601, Building 4, Huidongsheng Industrial Park, No. 1028 Guangqiao Avenue, Yulu Community, Guangming District, Shenzhen (South Gate)

As minimally invasive interventional therapies gain widespread adoption, medical spring guidewires—key instruments in interventional procedures—depend on welding quality for clinical safety. These guidewires are typically made of stainless steel or nickel‑titanium alloy, with diameters less than 1 mm, and must be joined to dissimilar metals such as platinum‑iridium coils and tungsten radiopaque rings. Conventional resistance welding and brazing generate significant thermal input, readily causing spring deformation, degrading the superelasticity of nickel‑titanium alloys, and yielding inconsistent welds—conditions that fail to meet the stringent standards of the medical device industry. In contrast, laser welding, with its high precision and low heat input, has emerged as the preferred process for manufacturing medical guidewires.

Laser welding achieves micro‑zone fusion bonding through a high‑energy beam, producing welds that are strong and smooth, free of porosity and spatter, and requiring no post‑weld grinding. The heat‑affected zone is reduced by 80% compared with conventional processes, preserving the material properties of nickel‑titanium alloys. Combined with vision‑based positioning, it delivers welding accuracy within ±5 μm, enabling seamless welding of ultra‑thin 0.36 mm guidewires. The joints exhibit excellent fatigue resistance, while also enabling reliable dissimilar‑metal welding between stainless steel–platinum–iridium and nickel‑titanium–platinum–tungsten, among other combinations.
 

The Horizon Laser Technology DPX W‑Series handheld laser welding machine features highly integrated design, breaking free from the limitations of stationary equipment and ideal for prototyping and small‑batch production of medical guidewire components. With power ratings ranging from 1,000 to 3,000 W, it supports both spot and continuous welding, offering precise control over weld penetration to effectively prevent burn‑through in ultra‑thin workpieces. The system incorporates multiple safety safeguards; its lightweight welding torch weighs just 0.75 kg, is easy to operate, and enables storage of process parameters. Equipped with a multilingual user interface, it meets the needs of medical device manufacturers worldwide. Featuring a fiber laser with a service life of up to 100,000 hours, it requires minimal consumables, delivers low operating costs, and generates minimal welding fumes, making it well suited for cleanroom environments in the medical industry.
 

This equipment can be operated flexibly by hand or integrated into automated production lines, fully capturing welding process data to meet the quality traceability and compliance requirements of medical devices. It addresses key challenges such as deformation during guidewire welding, uneven welds, and insufficient weld strength, thereby supporting the domestic upgrade and localization of high-end interventional consumables.

The DPX‑W series handheld laser welders serve not only the medical precision manufacturing sector but are also widely employed in sheet metal fabrication, new‑energy automotive components, kitchen and bathroom hardware, chassis and cabinet assembly, and other general‑purpose industries. They can replace traditional TIG and arc welding, seamlessly handling both precision small parts and standard workpieces.
 

Whether for medical‑grade components or various industrial metal‑working applications, Horizon’s handheld laser welders deliver reliable welding solutions. Feel free to contact us for process evaluation and customized solutions.