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March 1, 2025

Approximately 5 minutes

Thailand Medical Device Grouping Rules: Simplifying Registration and Saving Costs

Thailand Medical Device Grouping Policy

The Thai FDA has implemented new grouping guidance for medical devices to simplify the application process, offering manufacturers a more cost-effective and time-saving route for market access. Grouping allows multiple similar products to be included under a single registration submission.


📜 Three General Grouping Rules

To qualify for any grouping category, products must adhere to three fundamental criteria:

  1. One generic proprietary name: The devices must share a common recognized name.
  2. One product owner: They must be owned and controlled by the same legal entity.
  3. One common intended purpose: They must be used for the same general clinical objective.

📦 Grouping Categories and Definitions

The Thai FDA recognizes several specific grouping categories:

  • Single Device: Complies with the three general rules and only varies in package size or number of units.
  • System: Follows the general rules and contains a medical device working in combination with accessories to achieve a common intended purpose.
  • Family: Complies with the general rules and has a common risk classification, design, and manufacturing process, but allows for minor permissible variants (e.g., color, size, sterilization method).
  • Set: Consists of two types of medical devices that follow the general rules and are imported and sold in the same packaging. Classification is based on the highest-risk device in the set.
  • IVD Test Kit: Complies with the general rules, is labeled as a kit, and does not include an analyzer.
  • IVD Cluster: Complies with the general rules, is manufactured by a common entity, is either Type 1 or Type 2 risk, and has a common methodology (e.g., containing two different test kits and reagents).

➕ Permissible Variants for a 'Family' Grouping

The 'Family' grouping is the most flexible and allows for differences in characteristics that do not impact the core safety or efficacy of the device. Examples of permitted variants include:

  • Physical Dimensions: Diameter, Length, Width, Gauge, Shape, Size, and Volume.
  • Aesthetics/Non-Functional: Color, Flavor (for devices like condoms), and Texture.
  • Operational Differences: Sterility status (sterile vs. non-sterile), Radiopacity, Printing capability, and Method of sterilization (to achieve the same sterility outcome).
  • Product-Specific Variants: For catheters, this includes the number of lumens or the material (PVC, PU, Nylon, Silicone).

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Questions & Answers (4)

W
Guest

We are registering an IVD Cluster for clinical chemistry reagents. Some reagents are Class 2, while others (like the HBV test in the same methodology) are Class 4. If we include a "Universal Calibrator" that is used across 10 different test kits in this cluster, will the TFDA charge us for the calibrator separately? Additionally, if the methodology is the same but the "Detection Principle" differs slightly (e.g., Colorimetric vs. Enzymatic), can they remain in one Cluster?

ElendiLabs

To group as an IVD Cluster, the detection principle and manufacturer must be identical. If you have different principles (Colorimetric vs. Enzymatic), you must split them into two Clusters. Regarding the Calibrator: If it is a shared component used by all reagents in the Cluster, you can list it as a "Shared Component" within the Cluster application at no extra cost. However, if that same calibrator is sold separately for use with other systems, it requires its own separate registration. Note that a Class 4 reagent in a Cluster will pull the entire administrative review of that Cluster into the Licensed (Class 4) timeline and fee structure.

C
Guest

We have a patient monitoring hardware (Class 2) and a separate AI-driven diagnostic software (Class 3) that is installed on the device but can also be purchased as a cloud-based license. Should we group them as a System, or should the software be a Single registration? If grouped as a System, does the software's frequent version updates (e.g., v1.1 to v1.2) trigger a full "System" license amendment every time?

ElendiLabs

If the software is available for purchase and use independent of the hardware, it is highly recommended to register the software as a Single SaMD and the hardware as another Single device. If you group them as a System, any major update to the Class 3 software will "lock" the hardware's license during the amendment review period, potentially disrupting your hardware sales. For AI-driven software, TFDA's 2026 guidelines require a specific Software Change Management Protocol. By keeping them separate, you can update the software version via a more agile SaMD amendment process without affecting the hardware's market status.

J
Guest

我们计划在泰国推出一款脊柱手术成套工具(Set),其中包含第 3 类植入物(椎弓根螺钉)和多件第 1 类或 2 类的不锈钢手术器械。TFDA 是否允许将这些高低风险不同的产品放在一个申请号下?如果未来我们仅更换了其中的 1 类工具(如更改了手柄材质),是否需要针对整个第 3 类许可证提交重大的“变更申请(Change Notification)”?

ElendiLabs

TFDA 允许将这些产品作为 Set 分组。根据“以高定低”原则,整个 Set 将按照 第 3 类(Licensed) 进行审批,并缴纳最高等级的评审费。关于变更,如果 Set 中的 1 类组件发生变动但不影响核心植入物的临床性能,通常仍需提交 Change Notification。但在 2026 年的 Skynet 数字化系统下,此类非核心组件的微小变动可以走简易备案路径,前提是您在初始 CSDT 文件中清晰界定了各组件的物料清单(BOM)。

A
Guest

我们有一系列伤口敷料,材质完全相同,但有 5 种不同的形状(圆形、方形、条形)和 2 种不同的涂层(一种含银,一种不含银)。它们可以全部划入一个 Family 分组吗?如果含银敷料因为药械组合属性被定为第 3 类,而普通敷料是第 2 类,分组策略该如何调整?

ElendiLabs

不能。Family 分组的核心要求是:1. 风险等级必须一致;2. 预期用途必须一致。 即使材质相同,由于含银涂层具备抗菌功能(属于 3 类),而普通敷料仅为物理覆盖(属于 2 类),TFDA 要求必须拆分为两个 Family。此外,形状的不同(Variant)只要不改变基本设计原理,可以在同一个 Family 证下通过增加 SKU 列表来体现。

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