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Advantages of Plastic Injection Molding for Medical Parts

Plastic Injection Molding

Plastic has revolutionized the medical industry. Plastics not only reduce the spread of infection, but they are also an affordable material that provides a precise, lightweight, and durable device when used during injection molding. There is a wide variety of different polymers available that can be specifically formulated for healthcare applications. These plastics do not harbor pathogens and can withstand different sterilization processes. Plastics provide us with single-use tools and equipment, such as surgical gloves, syringes, and IV lines. These materials are also used in durable applications such as hospitals and medical equipment.

From dentistry to orthopedics, the benefits of plastics in the medical field are many. The same is true of the advantages of the manufacturing process of medical injections. Examples of plastic injection molded products for the medical device industry are:

  • Beaker
  • Test Tube
  • Laboratory and Clinic Enclosures and Housings
  • Implantable component
  • Surgical blade
  • Surgical tools
  • Pacemaker
  • Parts Orthopaedic and dental instruments
  • Needle Shell
  • Instrument handle
  • Suture delivery
  • Prosthetic device

Advantages of plastic injection molding for medical supplies:


Injection molded medical components are significantly cost effective.Forming tools and molds require a higher upfront cost than other manufacturing processes, but the mold only needs to be created once. It may need to be replaced after hundreds of thousands of runs, but it would be easier and cheaper to remake.

Injection molding is efficient and fast. You can produce in large quantities at a low cost per piece. In other words, the more parts you produce, the lower the cost. Plastic injection molding is almost always the most cost-effective option if you are manufacturing components or equipment in bulk.


The tolerances for the molding of medical devices are very strict. As technology continues to advance, these tolerances become more stringent.The more complex the part, the smaller the tolerances should be to ensure uniform performance at scale, making plastic injection molding an ideal manufacturing process for critical parts.

Design flexibility

Plastic injection molding does have some limitations, such as the need to avoid sharp corners, which can increase stress concentrations.In addition, the wall thickness should be uniform to prevent inconsistencies during cooling, which can lead to defects.

Still, you have a lot of leeway in terms of design. Medical plastic molding, for example, allows for complex geometries and complex designs. Medical plastic parts are molded in the mold cavity, so different functions can be achieved with only one injection. Designing a different function using another process would require multiple components that would be costly.

Reduce the weight of the equipment

Plastics in the medical field have unique mechanical properties designed to improve the performance of medical devices while reducing their weight. Lightweight medical injection components can enable patients who rely on constant monitoring from wearable medical devices to go about their daily lives.


Resins are used in injection molding because they have another quality: durability.Plastic injection-molded medical parts are very strong and can withstand the high temperatures found in autoclaves.These materials are also resistant to shock and vibration, making them useful in medical applications.