Medical Plastic Injection Molding

Turnkey Solutions for Your Medical Device Development.

ISO 13485 certified and FDA registered.

Aggressive timing and delivery of products.
Medical Device Development

Reliable medical devices can often spell life or death, and we take that responsibility very seriously.

The Art and Science of Injection Molding for Medical Devices

PTI Engineered Plastics provides medical device manufacturers with full-service advanced product development delivered in a compressed timeframe. With superior design for manufacturability, tooling, and molding capabilities, PTI turns product visions into reality and gets your product to market first.

Having served the medical industry for nearly 40 years, we understand medical device manufacturing.   Plastic Injection Molding remains one of the best manufacturing methods for achieving precision and cost-efficiency as well as maintaining patient safety. 

Injection molding allows medical design engineers the freedom to design complex or intricate parts, a vast selection of suitable materials and the consistency to produce both low and high volumes of devices.

Medical Applications for Injection Molding

  • Endoscopy
  • Laparoscopy
  • Cardiovascular
  • Drug Delivery
  • Neurological Surgery
  • Robotic Surgery
  • Patient Monitoring and Care
  • Orthopedic
  • Laboratory Organ and Cell Growth

Keys to Successful Injection Molding for Medical Devices

Mold Design

Mold Design is a crucial step in the injection molding process.  Once you’ve finalized your part in CAD software for fit and function, it must then be transformed into a design for molding to ensure the capture of all the specified details.  In some cases, certain features of the part design may not be manufacturable via the injection molding process. 

At PTI, we collaborate with you to achieve the best possible design for manufacturability.  In fact, we have a FREE guide to help you with this.

DFM Guide for Medical Device Injection Molding

Material Selection

Careful selection of materials is extremely important within the medical industry. Materials must meet FDA and other regulatory standards, ensuring patient safety, biocompatibility, sterilizability and durability.  As Injection molding allows for a vast selection of both thermoplastic and thermoset materials to choose from, there is certain to be a material suitable for just about any application.

Some of the most common materials used in medical devices are: Polypropylene, ABS, Polyurethane, Polyvinylchloride, Polycarbonate, Polystyrene, Polysulfone, Acetal and Polyethylene.

Get a quick reference materials chart for the most common materials used in medical devices:

Top 10 injection molding materials for medical devices

Clean Rooms

At PTI, we have over 16,000 square feet of ISO Class 8 cleanroom space that we utilize in our injection molding process to ensure as little contamination as possible.  We adhere to strict protocols that meet the demands the medical industry requiring ISO 14644 Cleanroom specifications, including bioburden and electrostatic discharge (ESD).

Furthermore, we have over 5,000 square feet of controlled environment space.  This segregated area is temperature controlled and pressurized, and can accommodate part decorating, assembly and packaging needs.

Class 8 cleanroom

Process Validation

In many cases, our medical device customers look to process validation to ensure quality parts.  After all, patients lives depend on PTI to deliver high quality parts each and every time.

Process Validation as defined by the FDA is “The collection and evaluation of data, from the process design stage throughout production, which establishes scientific evidence that a process is capable of consistently delivering quality products.”

Process validation is the best way to ensure the production of safe parts, to reduce rejection rates, to prevent part failures in the field and to ensure the part meets with application, specification and regulatory obligations.

Benefits of Injection Molding for Medical Devices

Precision and Consistency

Injection molding offers unmatched precision and consistency in the production of medical device components. The process allows for intricate designs and tight tolerances, ensuring that each part is identical to the next. This uniformity is crucial in the medical field, where reliability and precision are paramount.

Design Flexibility

One of the most significant advantages of injection molding is its design flexibility. Engineers can create complex, customized components with minimal tooling changes. This adaptability is essential in a field where the demand for innovative and unique medical devices is ever-expanding.

Cost Efficiency

The high initial tooling costs can be a barrier to entry for some manufacturers. However, once the molds are in place, injection molding is incredibly cost-effective for large production runs. The ability to produce a large number of parts in a short time reduces unit costs significantly, making it an ideal choice for mass production.

Speed to Market

With streamlined production processes, injection molding can significantly reduce time-to-market for medical devices. This is crucial in a rapidly evolving industry where innovations can make a significant impact on patient care and outcomes.

Regulatory Compliance

Meeting stringent regulatory requirements is a non-negotiable in the medical device industry. Injection molding excels in this regard. The ability to use FDA-approved materials and consistently produce parts that meet these standards ensures compliance from the outset.


Many medical devices must be in direct contact with the human body. Injection molding allows manufacturers to choose biocompatible materials, ensuring patient safety. These materials can be sterilized without affecting their properties, making them suitable for a wide range of medical applications.


Injection molding is scalable, which means it can cater to a variety of production volumes, from small-scale prototypes to mass production. This scalability offers manufacturers the flexibility to meet different market demands.

Reduced Material Waste

The injection molding process generates minimal material waste compared to other manufacturing methods. This not only contributes to cost savings but also aligns with the increasing focus on sustainable and environmentally friendly manufacturing practices.

Post-Processing Versatility

Injection molded parts can undergo a variety of post-processing operations, such as assembly, machining, laser marking, pad printing or surface finishing, to meet the exact requirements of the medical device.

Enhanced Performance

Injection molding produces parts with a high level of structural integrity, ensuring they can withstand the rigors of their intended application. These parts are less prone to defects and offer superior performance over their lifecycle.

Injection molding for medical devices represents the perfect synergy of precision engineering and advanced manufacturing technology. Its benefits, from precision and consistency to cost-efficiency and regulatory compliance, make it a top choice for design engineers and medical device manufacturers. The process empowers engineers to innovate, create intricate components, and bring lifesaving devices to market faster than ever before. The future of medical device manufacturing is being molded with precision, and injection molding is at the forefront of this revolution.

Our medical plastic injection molding capabilities include:

  • Medical Device Design Development and Assistance
  • Design for Manufacturability
  • Medical Device Molding
  • Cleanroom Molding and Assembly, Class 8
  • ISO 13485 Registered and Compliant
  • FDA Registered
  • RJG Certified Mold Builder and Tryout Facility
  • Cavity Pressure Sensing and Scientific Injection Molding

We have been serving the medical industry for nearly 40 years, specializing in handling complex, multi-part programs and medical device molding for a variety of customers. Our direct contact with doctors and other medical professionals gives us insight into their needs and helps define and assist with final product solutions.