Custom CNC machining of medical device parts requires adherence to very strict standards, particularly in material selection, precision, and surface treatment. Key factors include:
Material Selection:
Stainless Steel: Commonly used types include 316L and 304 stainless steel, known for their excellent corrosion resistance and biocompatibility, making them suitable for long-term contact with human tissue and fluids.
Titanium Alloys: Widely used in medical implants due to their lightweight, high strength, and good biocompatibility.
Machining Precision:
Medical device parts often require high-precision machining with tightly controlled tolerances to ensure dimensional consistency and assembly accuracy.
During machining, it is important to avoid burrs or rough surfaces to prevent harm to patients.
Surface Treatment:
Polishing: Medical device parts typically require precision polishing to achieve a high level of surface finish, reducing friction and making cleaning easier.
Electropolishing: Further improves the surface finish and corrosion resistance of stainless steel.
Cleaning and Sterilization Requirements:
After production, parts must undergo strict cleaning and sterilization to meet medical hygiene standards.