The application of laser welding machine in medical industry


The application of laser welding machines in the medical field is mainly reflected in the manufacturing of high-precision and high-reliability medical devices, especially in the welding of interventional, implantable, and precision electronic components, where they have irreplaceable advantages. The following are their main application and technical characteristics:

I. Precision Instrument Welding

     Cardiac Stents and Guidewires: Laser welding can achieve welding with an extremely small spot size of 0.02mm, used to precisely rivet radiopaque markers such as gold and tantalum to both ends of the stent, ensuring accurate positioning during surgery.

     Welding of Medical Guidewires (Diameter <1mm): Welding of medical guidewires (diameter <1mm) requires avoiding heat damage. Laser soldering machines, through non-contact low heat-affected zone technology (heat-affected zone <0.05mm²), improve production efficiency and rate of qualified products.

     Endoscopes and Biopsy Forceps: Welding of gastroscopy biopsy forceps requires no burrs and no deformation. Laser welding replaces traditional riveting and resistance welding, meeting tensile strength and surface finish requirements.

     Endoscope Optical Component Sealing:  Sealing of endoscopic optical components requires a flux-free process. Laser welding avoids chemical residues, ensuring image clarity.

II. Electronic Components and Sensors

Connectors and Sensors: RF coil connectors for high-end MRI systems utilize dual-station laser solder ball welding, achieving low-heat input welding in confined spaces and enhancing vibration resistance.

2. Sensor welding for implantable pacemakers employs precise temperature control (pulse width 0.3-1.2ms) to avoid thermal damage and improve corrosion resistance.

III. Technological Advantages and Industry Standards

Precision and Efficiency: Submicron-level positioning system (±0.15mm) and intelligent parameter control ensure welding repeatability error <0.01mm.

2. Material Compatibility: Supports various medical materials such as stainless steel, nickel-titanium alloys, and cobalt-chromium alloys, and is compatible with plastic welding (e.g., earwax protector diaphragms).

IV. Future Exceptation

Laser welding machines, with their micron-level precision, low heat impact, and automation capabilities, have become a core technology in medical device manufacturing, continuously driving the development of precision medicine.