Medical Parts Processing Scheme

The processing scheme of medical parts should be formulated according to the specific part type, material and precision requirements. The following are some examples and general points of processing scheme of common medical parts:

Examples of 1. common medical component processing solutions

Bone plate processing

Material: titanium alloy (such as TC4), cobalt chromium molybdenum alloy, etc.

Processing technology:

Roughing using high-performance rounded end mills (such as SS600 series), cycloid milling to remove most of the material, cutting speed 7500r/min, feed 2000 mm/min.

Finishing using titanium alloy finishing end mill, control the depth of cut in 0.1-0.8mm, to ensure surface accuracy.

The cooling method is water-based external cooling to avoid material deformation.

Medical catheter processing

Molding process:

Tip melt head molding: by heating the mold shaped into a smooth cone, control the temperature and mold accuracy.

Flaring molding: pre-cooling after using heating block flaring to prevent deformation.

Surface treatment:

Plasma surface treatment enhances hydrophilicity or antibacterial properties.

Apply an ultra-lubricious or antibacterial coating to improve biocompatibility.

Denture processing

Crown processing:

Material is zirconium dioxide or titanium alloy, using five axis machining center milling forming.

Ball end milling cutter (such as JMB500 series) machining complex shape, coating tool to extend the service life.

base and nail processing:

Outside the circle turning, thread turning mainly, the use of mind machine or slitting machine.

The whole hard thread milling cutter processes small hole threads to avoid the risk of cutter breakage.

Key Points of General 2. Processing Scheme

Material selection

Metal materials: stainless steel (such as 316L), titanium alloy, cobalt chromium molybdenum alloy, etc., taking into account the strength, biocompatibility and processing performance.

Plastic materials: medical grade PP, PE, PEEK, PPSU, etc., suitable for non-implanted parts.

Processing equipment

Five-axis machining center: suitable for complex surfaces and multi-angle machining, such as Haas VF series, Makino N2-5XA, etc.

Turning center: used for shaft, thread processing, equipped with automatic tool change system to improve efficiency.

Injection molding machine: suitable for plastic parts, to meet the health and precision requirements of the medical industry.

Cutting Tools and Coatings

Special tools are selected, such as coated end mills for titanium alloy processing, small hole thread milling cutters, etc.

Coating technologies (e. g. DLC coating, niobium nitride coating) improve tool wear and adhesion resistance.

Quality Control

Whole process inspection: raw material inspection, random inspection during processing and final inspection of finished products.

Test items include dimensional accuracy, surface roughness, coating adhesion, etc.

Meets medical industry quality standards such as ISO 13485.

3. considerations

Biocompatibility: avoid pollution during processing and ensure no adverse reactions between materials and human tissues.

Precision requirements: the implanted parts shall achieve micron-level precision with surface roughness Ra<0.1 μm.

Regulatory Compliance: Processing companies are required to be ISO 13485 certified to meet regulatory requirements such as the FDA.

The above plan needs to be adjusted according to the needs of specific projects, and it is recommended to cooperate with professional processors to ensure product quality and safety.