Custom-Made and Special Access Medical Devices in Thailand

Not every medical device that reaches a Thai patient fits the standard registration model, and Thailand's Medical Device Act B.E. 2562 (2019) recognizes that with two narrow, well-defined exceptions: custom-made devices manufactured for a single patient, and special access to devices that aren't registered in Thailand at all. Both pathways exist for genuine clinical need, not as a way around registration, and Thai FDA actively monitors their use for exactly that reason. Manufacturers and healthcare institutions that understand where the boundaries of these exemptions actually sit can use them correctly; those who treat them as a shortcut expose themselves to the same enforcement consequences as anyone supplying an unregistered commercial device.

Why these pathways exist at all

Standard device registration assumes a commercially produced product intended for distribution to many users, and that model breaks down for devices built to one patient's unique anatomy, where a full registration for each individual unit isn't practical. It also breaks down when a patient has an urgent clinical need for a device that hasn't been registered in Thailand yet, and waiting for a full registration cycle isn't clinically acceptable. Thailand's Medical Device Act addresses both situations directly, but frames them explicitly as exceptions to the registration requirement, not alternative routes for avoiding it. Thai FDA takes enforcement action against manufacturers or importers who use either provision systematically to supply devices that should properly go through standard registration.

What actually qualifies as custom-made

A custom-made device is one manufactured for a specific individual patient, based on a written prescription or order from a qualified healthcare professional, and intended exclusively for that patient. The definition is strict, and it excludes more than manufacturers sometimes assume: a device built to a design that isn't patient-specific doesn't become custom-made just because it's adjusted for size or color. Genuine examples include patient-specific orthopedic implants designed from a patient's own imaging data, maxillofacial implants fabricated from a patient's CT scan, custom prosthetics built to an individual's anatomy, and dental prosthetics made to a specific patient's impression.

Several conditions have to be met for a device to qualify. A written prescription or work order from a licensed physician or dentist must accompany the device, identifying the patient, describing the clinical need, and carrying the prescribing professional's signature; without it, the device simply doesn't qualify as custom-made. The manufacturer also has to prepare a declaration for each device, confirming the patient it was made for, the prescribing practitioner, a description of the device and its intended purpose, a statement that it meets applicable design and manufacturing standards, and any special instructions for use, and this declaration has to be kept on file and available to Thai FDA on request. Critically, a custom-made device cannot be produced in series: if the same design is made for multiple patients, even with minor adjustments per patient, Thai FDA will determine it isn't custom-made and requires standard registration instead. ISO 13485 certification isn't formally required for custom-made devices the way it is for registered ones, but manufacturers are still expected to maintain design controls, materials traceability, and manufacturing records to a comparable standard.

How special access for unregistered devices actually works

Special access, sometimes called compassionate use, lets a healthcare institution access a device that isn't registered in Thailand when a genuine patient need can't be met by a registered alternative. It's granted case by case, is time-limited, and is restricted to the specific patient or clinical situation named in the application. It is not an alternative registration route for a device that already has a commercial market in Thailand: Thai FDA will not grant special access for a device that is simply awaiting registration review or hasn't had an application submitted at all.

The process starts with clinical justification from the treating physician, who has to document the clinical need, explain why no registered alternative is suitable, and confirm that the patient or their guardian has consented to use of an unregistered device. For experimental devices or ones without established safety and performance data from a foreign regulatory approval, an institutional ethics committee review is often required at research or university hospitals, serving as the patient protection mechanism that would otherwise come from standard regulatory review. The healthcare institution then applies to Thai FDA for a special import and use authorization, including the clinical justification, physician's declaration, patient consent, and manufacturer documentation covering safety and performance data. If Thai FDA approves it, the resulting import authorization is strictly limited to the specific quantity and patient named, cannot be exceeded, and applies only at the institution identified in the authorization; post-use reporting may also be required depending on the device type.

The narrower institutional exemption

A separate, even narrower exemption applies to devices produced entirely in-house by a healthcare institution's own clinical or pharmacy staff for that institution's own patients. This covers things like devices assembled from already-registered components within the hospital, reagents or solutions prepared by a hospital laboratory for its own diagnostic use, and assistive devices or adaptations built by rehabilitation staff for individual patients. It does not extend to anything sold, transferred, or supplied to another institution or to patients for home use. Institutions relying on this exemption need to keep records of what was produced, for which patients, and on what clinical basis, since Thai FDA can and does inspect hospital facilities to confirm the exempt activity genuinely stays within scope rather than functioning as an unregistered commercial supply channel.

Getting the determination right before supply begins

The cost of misjudging where these boundaries sit is high: supplying a device through the custom-made exemption without meeting its strict definitional criteria carries the same regulatory consequences as supplying an unregistered commercial device outright. For manufacturers unsure whether a product genuinely qualifies as custom-made or should go through standard registration, and for institutions weighing whether a special access application is realistic for a given clinical situation, getting that determination right before any device reaches a patient is the only way to use these pathways safely. DeeMED Consulting works through device classification and pathway determination with manufacturers and Thai healthcare institutions before supply begins, so custom-made, special access, and standard registration routes are matched correctly to the actual product and clinical situation from the start.