Laser cutting: used to cut human transplantation equipment and surgical tools

In the field of medical devices, laser cutting includes implantable stents, endoscopes and arthroscopic tools, flexible shafts, needles, catheters and waveguides, as well as flat appliances, such as fixtures, which are critical to achieving advanced surgery and improving the health and quality of life of millions of patients.

Laser cutting of medical devices usually requires the use of pressurized auxiliary gas, usually oxygen, argon or nitrogen. The gas flows coaxial with the speed of light. The laser source for cutting is microsecond level, and nanosecond fiber laser or USP laser with pulse width of 100/s can be selected. Fiber laser is widely used because of its low price, good beam quality and easy integration with fiber.

Fiber laser can well cut stainless steel, titanium, cobalt chromium, nickel titanium alloy and other thick metals with a cutting thickness of 0.5~3mm.

Therefore, fiber laser is an ideal choice for large surgical drills with cutting saws, blades and couplings. However, as optical fiber laser cutting is a hot processing process, burrs, slag inclusions and heat affected zones usually appear after cutting parts. Therefore, only after electropolishing and other post-treatment cleaning technologies are used for rolling and deburring, can the processed products be polished and cleaned before use.

In the manufacture of medical devices, laser has become laser marking and welding. It is widely used in cutting and other technological processes. It is very important to select the laser suitable for each processing process to achieve the desired processing effect and stable repeatability. Therefore, a comprehensive understanding of the process foundation provides new opportunities to promote innovation in the field of medical devices.