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How To Make Medical Parts With CNC Machining


The items CNC manufactures include a variety of surgical instruments used in medical procedures, such as trocars (piercers), bone drills and saws. When cnc machining is used, parts are typically milled using 3 to 5 shafts or turned using a moveable tool CNC lathe. The most common types of machines used in the manufacturing of medical parts include CNC milling machines, lathes, drill presses, and computerized milling machines. Reliability and high quality is the top priority of medical parts processing, so the medical device industry has put forward new requirements for professional precision tools difficult to process materials, complex workpiece shape and frequent CNC small batch production for the processing of professional medical equipment tools put forward high requirements.

Requirements for medical parts

The requirements for cnc machining machine tools are relatively high

Advanced medical device processing equipment, such as Swiss automatic lathe, multi-spindle machine tool and rotary table, are completely different from the usual processing center and lathe, their size is very small, very compact structure; To comply with such requirements, the structure of the tool also needs to have a special design, the size of the tool is required to be small, but also to ensure the rigidity of the tool.

How To Make Medical Parts With CNC Machining

High requirements on cnc processing efficiency

For medical devices, the most important thing is the processing efficiency, that is, the processing tempo, which requires that the blade can be replaced in the shortest time.

From the workpiece itself, and other mechanical parts have a great difference; The medical instruments implanted into human body are required to have a very good finish and a very high precision without any deviation, which requires the cutting tools from the design of blade structure to the design of blade coating to meet high processing requirements.

CNC machining requirements

Tolerances in the micron range are common in the medical industry, and choosing the right tool requires keen insight and a wealth of experience. On the one hand, even drilling small holes requires the use of lubricants to reduce friction, reliable heat dissipation and treatment of fine iron filings at the blade; On the other hand, in the production of cutting-edge medical devices (without burrs), sharp and smooth running cutting tools are needed to obtain high quality surfaces.

How to use CNC machining technology to make medical parts.

Medical parts not only need to have a high degree of precision and quality, but also need to undergo strict certification to ensure their patient safety. Therefore, when CNC machining medical parts, we need to consider the following factors:

Material selection: Materials used for medical parts need to meet demanding requirements. Because they come into direct contact with patients, they need to be non-toxic, corrosion-resistant, sterile and so on. Common medical materials include stainless steel, titanium alloy, ceramics and so on.

Machining accuracy: The manufacturing of medical parts requires extremely high accuracy and reliability. Therefore, in CNC machining, we need to use high-precision machine tools, and select high-precision machining tools.

Surface treatment: The surfaces of medical parts require special treatment to ensure their finish and sterility. Such as electrolytic polishing, anodic oxidation, sand blasting and other surface treatment.

Medical parts processing procedure

Through the above requirements, we can determine the specific steps of CNC processing of medical parts:

Determine the design of parts: before CNC machining, the first need to carry out the design of parts. According to the required function, size, material and other elements, design to meet the requirements of the parts CAD files.

Material selection: According to the characteristics of the parts, select the appropriate materials and ensure that they meet the standards of the medical industry.

Processing: parts processing technology on CNC machining machine. Strictly control the processing parameters to ensure the precision and quality of parts.

Surface treatment: Surface treatment of parts and components to ensure their finish and sterility.

Quality inspection: Quality inspection is carried out after the parts are manufactured. Inspection includes appearance quality, dimensional accuracy, material quality and so on. Only parts that pass the inspection can be put into use.

Through the above steps, we can ensure that the medical parts processed by CNC meet the requirements of the medical industry and reach the high precision and high quality standards.

Common processing techniques are used to make medical parts

In the medical industry, machining is one of the most commonly used production modes. The following is a list of commonly used processing techniques in the manufacture of medical parts:

cNC machine tool machining

CNC machine tools are designed to produce parts with high accuracy, high complexity and large quantities, making them ideal for manufacturing medical devices. CNC machining provides high precision manufacturing, repeatability and rapid production, which can meet diverse and complex needs in a relatively short time.

CNC milling

CNC milling is a kind of high precision machining technology, which can produce a variety of complex medical parts. Because the machine is so precise, editors and designers can control the precision and speed of each step. This method of production can ensure high quality production, so it is widely used in the medical field.

Injection molding

Injection molding is one of the most popular processing techniques for making medical parts. The process is suitable for making very small parts and large components. When making medical parts, injection molding can produce complex parts, reducing potential contamination and splicing problems. Since the manufacturing process can be completed in one go, production efficiency is improved accordingly.

Injection molding


Edm is usually used to manufacture precise parts. It processes a workpiece by applying a voltage between the workpiece and the electrode to produce a high-voltage electrical spark. Edm is an excellent way to produce high-quality, precision parts, but it requires a high technology content, so the cost is correspondingly high.

Laser cutting

Laser cutting is another effective process and is widely used in the medical device industry. It uses high-powered laser lines to cut the material into the desired shape. Laser cutting is a contactless processing technique that does not damage the area around the part and allows for high repeatable productivity. Due to the high processing accuracy and resolution of the materials, the products produced by laser cutting have stability of size and quality, thus reducing the risk of contamination and splicing.

Injection molding, precision CNC machining or laser cutting are all widely used in the medical industry. Depending on the size and complexity of the component, you can choose between these processes. Whether you are manufacturing parts for medical devices or improving medical devices, these processing technologies are available.

Application of CNC machining technology in medical industry

In the medical industry, CNC machining technology can be used in the manufacture of almost all medical parts. Some of the most common applications include:

Manufacture of surgical instruments and knives. Traditional surgical procedures require instruments of high precision, high quality and high reliability. These instruments can be manufactured quickly and accurately using high quality CNC machining equipment. High-quality materials are also essential to ensure surgical reliability and patient safety.

The manufacture of medical devices. In addition to surgical instruments, online CNC machining can also be used in the manufacture of medical equipment. The most common medical devices are scanners and X-ray devices. The manufacture of these devices requires high-precision components and assemblies to ensure accurate detection and diagnosis. With high precision and high quality parts, CNC machining equipment can also provide assistance for other internal machinery manufacturing.

Corrective device. Familial myxoid encephalopathy (FMD) is a genetics-based disease also known as “Alzheimer’s disease”. To treat the condition, doctors create custom corrective devices to slightly correct the patient’s gait. This type of corrective device can only be manufactured with CNC, as it requires high precision and super accurate manufacturing standards to be achieved.

Longsheng medical parts manufacturing capacity

We guarantee a one-stop solution for your rapid prototyping and parts manufacturing needs. The entire manufacturing process takes place within our own factory, allowing us to closely monitor the quality and consistency of the final product. In addition, we work with highly vetted suppliers to ensure that all required materials are readily available at all times.

Our products have been widely used in medical devices, including medical catheters, surgical instruments and artificial joints. We know the importance of manufacturing medical equipment, so we have been committed to improving our strength and ability to serve more customers.

If you need medical equipment parts, please contact us, we will serve you wholeheartedly.


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