Clearing the Path: Essential FDA and Manufacturing Insights for Device Developers

Bringing a medical device to market involves navigating a maze of regulations to ensure safety, effectiveness, and FDA compliance. From managing material selection and conducting biocompatibility tests to collaborating with a supplier’s compliance team, there are several key steps that need to be in place for a successful product launch.

In this article, we’ll break down some key areas where suppliers can provide valuable assistance to medical device developers: submission of device master file (MAF) to FDA, biocompatibility testing, custom formulations, and compliance support.

Mastering Materials

A MAF may be submitted to the FDA for a variety of functions, including facilities and manufacturing procedures and controls; synthesis, formulation, purification, and specifications for chemicals, materials (e.g., an alloy, plastic, etc.), or subassemblies for a device; packaging materials; contract packaging and other manufacturing (e.g., sterilization); nonclinical study data; and clinical study data. This submission by a material or component supplier generally includes proprietary details about the materials or processes used in the manufacturing of a medical device. The purpose of an MAF is to allow the FDA to review the technical data for a material that is necessary to support the approval of a device without the supplier having to reveal proprietary information to the device manufacturer.

It’s worth noting that maintaining MAFs is voluntary—it’s not required by law. However, many suppliers maintain MAFs for their products because they streamline the approval process for manufacturers. A supplier who has an MAF on file can simply give the FDA a letter of authorization to access it, avoiding the need for repeated data submissions and potentially speeding up the approval process.

For many developers, the MAF might seem like a minor detail, but it can make a significant difference in the speed and efficiency of getting a device to market. And while the FDA does not officially approve or disapprove a file, it acts as a resource that helps them review key information on a material without needing to reveal proprietary details. This is especially useful when materials are highly specialized, giving both the supplier and manufacturer peace of mind during the review process.

Testing for Biocompatibility

Biocompatibility testing is performed to determine if there is a potential adverse biological response resulting from contact of the device’s component materials with the body and whether the associated risks are unacceptable. Additionally, the impact of sterilization must be considered to ensure that the material’s properties remain stable and biocompatible after undergoing processes such as gamma radiation or ethylene oxide (EtO).

Generally, the biocompatibility of materials including polymer resins is determined by conducting select ISO 10993 and/or USP <1031> testing based on whether the material is intended for surface contact or in-body applications and for the expected duration of exposure. Biocompatibility data on materials give manufacturers confidence in the materials they’re working with, but it’s still the manufacturer’s job to make sure the entire device meets all biocompatibility requirements.

A device consisting of material that has been well characterized and has a long history of safe use may not need testing for all endpoints. The evaluation and testing of medical devices is based on consideration of physical and chemical characteristics of device materials and the nature, degree, frequency and duration of device exposure to the body, as well as how the device materials respond to sterilization methods. 

For example, Lubrizol’s development work with interventional catheter-based products shows that component dimensions/tolerances and interactions with other device materials can impact a material’s overall biological performance. If tolerances are too tight, this can put extra stress on materials and change how they behave in the body over time. Knowing how a device will perform in real-world conditions—like after it’s been shipped, stored or sterilized—can help you avoid unexpected problems when it comes time for final testing.

Customizing Materials

Device manufacturers often need a specialized solution—whether it’s a material that can handle specific sterilization methods or one that degrades safely inside the body. This is where custom formulations come in.

Take, for example, a material that needs to have exceptional tensile strength to withstand constant stress or one that has to withstand exposure to high heat during sterilization or harsh chemicals. Manufacturers can work with their suppliers to optimize the material properties to ensure the integrity of the material throughout the design and use process.

When it comes to catheter production, Lubrizol often teams up with customers to create materials that not only meet specific clinical needs but also work smoothly in the manufacturing process without causing complications. Something as seemingly minor as the interaction between different materials—like TPU and nylon—can create challenges in extrusion or bonding, which is why early collaboration between material science and manufacturing teams is essential.

Keeping Up with Changes

The medical device industry doesn’t stand still. That’s why it’s vital for suppliers to keep a close watch on changing regulations so that their materials stay compliant and competitive in world markets. This is where your supplier’s compliance team becomes especially valuable. They stay on top of ever-changing regulations, helping you steer clear of unnecessary holdups.

This is especially important, for instance, with Europe’s new Medical Device Regulation (MDR) and In Vitro Diagnostic Regulation (IVDR). These regulations took effect in 2021 and 2022 and bring tougher requirements for medical devices, including more rigorous premarket reviews, stricter clinical evidence standards, and better tracking of devices through the Unique Device Identification (UDI) system.

While suppliers do not usually deal directly with a regulatory agency on behalf of the manufacturer, they provide the necessary data and documentation on the material and/or device subassembly to support the submission. 

Now Launching

Teaming up with the right suppliers equipped to navigate your project to completion can make the development process run a lot smoother.

Whether you’re using ready-made materials or working with a supplier to develop something custom, having the right people on board—both in-house and on the supplier side—makes all the difference. It can help speed up approvals and get safe, effective products to market faster.

Meera Raghuram is currently the Director, Regulatory Strategy and Policy for Lubrizol Life Sciences. She has over 25 years of experience in complex regulatory and sustainability strategy for pharmaceutical/OTC, dietary supplements, medical device and personal care (beauty) ingredients. She is a member of the IPEC Executive Board and actively participates in technical and advocacy activities with various industry trade organizations.