FDA Updates Biocompatibility Guidelines To Identify Devices And Materials That Do Not Need To Be Tested

On September 8, 2023, the FDA made an important update to its biocompatibility guidance. They have now adopted the Use of International Standard ISO 10993-1, titled "Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process." This updated guidance replaces the previous version that was in effect in 2020. This regulatory change signifies the FDA's commitment to ensuring the safety and effectiveness of medical devices through robust evaluation and testing procedures. By aligning with international standards, the FDA aims to streamline the regulatory process and enhance the overall quality of medical devices in the market. This development will have a significant impact on manufacturers, who will now need to comply with the updated guidelines to gain FDA approval for their medical devices. Overall, the FDA's decision to embrace ISO 10993-1 reflects their dedication to staying current with industry practices and prioritizing patient safety.

 

 

 

The FDA has issued revised guidance for premarket submissions of certain medical devices that come in contact with intact skin. The revised guidance incorporates the recommendations from the draft 2020 guidance on biocompatibility updates. In essence, this guidance outlines what type of biocompatibility information should be provided in premarket submissions. The final guidance reflects the FDA's current perspective on this matter.

 

 

 

【 Update Overview 】
The major update focuses on the inclusion of a new section called Appendix G, which provides important information regarding the biocompatibility of specific devices when they come into contact with undamaged skin. This addition serves to provide a comprehensive description and guidelines for assessing the compatibility of these devices with the skin.

 

In order to ensure safe use of medical devices, it is important to follow certain recommendations for the materials that come into contact with intact skin. Appendix G provides a comprehensive list of commonly used materials that are suitable for this purpose. It is recommended to use these materials in medical devices to minimize the risk of skin irritation or other adverse reactions. Some of the materials listed in Appendix G include polymers, metals, and fabrics. It is important to carefully consider the material used in medical devices, as it can directly impact patient safety and comfort. By following these recommendations, healthcare professionals can ensure that medical devices are used safely and effectively.

 

1) Polymers, such as plastic or silicone, and
2) Fabric, such as cotton or rayon.
There are various ways by which the applicant can determine the appropriate time to apply the policy outlined in Appendix G.

 

The FDA recommends including specific information and labeling in premarket submissions. It is important to provide thorough details and comprehensive labeling to meet the requirements set by the FDA.

 

Manufacturers implement quality management systems and post-market strategies to identify biocompatibility issues. These strategies include procurement and manufacturing process controls, as well as customer complaint reviews. By utilizing these techniques, manufacturers can identify any potential issues that may arise with the biocompatibility of their products. This allows them to take corrective action before any negative outcomes occur. By focusing on quality and customer feedback, manufacturers can ensure that their products meet the highest standards for biocompatibility and overall safety.

 

 

 

There are certain devices that do not require biocompatibility testing.

 

 

Biocompatibility testing is not required for devices that fulfill these criteria:

 

 

Medical devices or components that solely come into contact with undamaged skin are the subject matter. Let us construct a text that is highly similar by reorganizing the provided information.

 

 

The duration of exposure to a certain substance or equipment plays a crucial role in determining its potential effects on human health. Exposure can be categorized into three types based on the duration: limited (less than or equal to 24 hours), extended (more than 24 hours but less than 30 days), and long-term (more than 30 days), which may include repeated use of the equipment. It's vital to understand the duration and intensity of exposure to determine the potential risks associated with it.

 

 

The materials outlined in the following section make up the third point. To generate highly similar content, the information can be rearranged. It is important to ensure that the generated content is based on the original text information, but please avoid using the conversational style of ChapGPT. Instead, focus on using a language model to deliver the information in a different manner.

 

 

 

The following materials of the above devices are exempt from biocompatibility testing: [list materials here]. To provide you with a highly similar content, the exemption of biocompatibility testing applies to specific materials used in these devices. These materials have been determined to have a low risk of biocompatibility concerns based on existing scientific knowledge and regulatory guidelines. It is important to note that exemptions may vary depending on regional regulations and specific product requirements. Consequently, it is essential to consult relevant authorities and industry standards to ensure compliance and safety.

 

 

Biocompatibility testing is not required by the FDA for certain materials found in finished devices that come into contact with intact skin surfaces.

 

 

The premarket submission of devices that come into contact with the skin does not require the disclosure of exposure information for various processing chemicals and additives. These materials, which may include plasticizers, fillers, color additives, cleaners, and release agents, are typically not specified in the submission. However, it is important to note that color additives are an exception to this rule.

 

 

Devices composed of polymer mixtures or a single material are not required to undergo biocompatibility testing. This exemption applies to devices created from a variety of materials.

 

 

 

Acrylonitrile-butadiene-styrene plastic (ABS);

• Cellulose Acetate；

Epoxy adhesives that have been cured are often utilized in the medical field to bond different components of medical devices together.

 

 

• (PTFE)、(ePTFE)、(PVDF) (FEP)

There are several types of fluoropolymers that are commonly used in various industries. These include polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (ePTFE), poly(vinylidene fluoride) (PVDF), and perfluoro(ethylene-propylene) plastic (FEP). These materials are known for their exceptional resistance to heat, chemicals, and extreme conditions, making them ideal for numerous applications. PTFE, for instance, is well-known for its non-stick qualities, making it widely used in the production of cookware and utensils. ePTFE, on the other hand, has superb porosity and is used in the production of surgical implants and filters. PVDF and FEP are known for their high resistance to chemicals and are used in the production of chemical processing equipment and electrical wiring insulation. Overall, fluoropolymers offer a unique combination of properties that make them invaluable in a wide range of industries and applications.

 

 

• Nitrile Butadiene Rubber (NBR);

• Parylene;

• Polyamides (PA), such as nylon and Velcro®;

• Poly(butylene terephthalate) (PBT);

• Polycarbonate (PC);

• Polychloroprene, such as neoprene;

• Polyetheretherketone (PEEK)

• Polyetherketoneketone (PEKK);

PEBA, which is also known as PEBAX®, is a polyether block amide compound. This material is widely used in various industries due to its unique properties. PEBA is known for its excellent flexibility, high elasticity, and good resistance to abrasion, which makes it an ideal choice for manufacturing medical devices, sports equipment, and other products that require durability and toughness. Its versatility also makes it suitable for use in automotive and electronics industries. Overall, PEBA is a superior material that offers a wide range of benefits and has many applications.

 

 

• Polyether imide (PEI);

• (LDPE)  (HDPE)

聚乙烯是一种合成塑料，主要分为低密度聚乙烯（LDPE）和高密度聚乙烯（HDPE）。对于生成高度相似的内容，重排上述内容，确保生成的内容基于原始文本信息。

 

 

Poly(ethylene terephthalate) (PET), commonly known as the material used in the production of Velcro®, is a highly versatile and durable polymer. PET is widely used in the manufacturing of fibers, films, and plastic bottles due to its excellent mechanical, thermal, and chemical properties. PET is also widely applicable in the food and beverage industry due to its ability to resist moisture, gases, and UV light, making it a popular choice for packaging. Additionally, PET products are easily recyclable, making them a sustainable option for various applications. Overall, PET is a vital material in the industry due to its versatility, durability, and eco-friendly attributes.

 

 

• Poly(methyl methacrylate) (PMMA);

• Polyoxymethylene (POM);

• Poly(phenylene sulfone) (PPSU);

• Polypropylene (PP);