Application of injection molding in medical device field

With the continuous advancement of modern medical technology, the importance of medical devices has become increasingly prominent. From routine diagnosis to complex surgical treatment, every link is inseparable from the support of medical devices. In the manufacturing process of medical devices, injection molding processing technology is playing a vital role and becoming a key force driving the progress of the medical industry.

Injection molding, involves heating plastic raw material to a molten state, injecting it into a mold under high pressure, and then cooling and solidifying it, producing a plastic product with a specific shape and size. This process is widely used in the medical device manufacturing industry, encompassing everything from disposable medical consumables to complex medical device components and precision implants.

The principle of injection molding may seem simple, but it embodies a high degree of technical complexity and precision. By precisely controlling the injection molding machine's parameters, such as temperature, pressure, and speed, and meticulously designing the mold, it is possible to produce medical device components with complex shapes, precise dimensions, and excellent surface quality, meeting the medical industry's stringent requirements for high precision and reliability.

The various applications of injection molding in medical devices:

1. Disposable medical supplies: Disposable syringes, infusion sets, and lancets are among the most commonly used products in the medical field. Injection molding enables scalable and efficient production at a relatively low cost, ensuring an adequate supply of these disposable products. Furthermore, strict control over hygiene conditions and material selection during the production process ensures product sterility and safety, effectively reducing the risk of cross-infection.

2. Medical device components: Medical devices such as ultrasound diagnostic equipment, magnetic resonance imaging (MRI), and CT scanners contain numerous complex plastic parts. Injection molding allows for the production of high-precision, complex components such as device housings, internal brackets, and connectors. These components must not only exhibit excellent mechanical properties to ensure stable operation but also meet certain electromagnetic compatibility requirements.

3. Implantable devices: With the continuous advancement of medical technology, an increasing number of implantable devices are being used in clinical treatments, such as artificial joints, pacemaker housings, and vascular stents. These implantable devices directly contact human tissue, placing extremely high demands on the biocompatibility, corrosion resistance, and mechanical properties of the materials used. Injection molding can utilize specialized medical-grade polymer materials such as polyetheretherketone (PEEK) and polysulfone (PSU) to manufacture implantable devices that meet these stringent requirements.