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February 3, 2026
Approximately 5 minutes
Frequently Asked Questions on Medical Devices in Portugal
Frequently Asked Questions on Medical Devices in Portugal
1. Overview
INFARMED, I.P., the Portuguese authority for medical devices, provides a comprehensive set of FAQs covering definitions, classifications, responsibilities, and regulatory processes under Law-Decree nº 145/2009 of 17 June, which transposes Directive 93/42/EEC. These FAQs aim to clarify key concepts and ensure compliance to maintain safety and efficacy. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
2. Key Definitions
Medical Device
A medical device is defined as any instrument, apparatus, appliance, software, material, or other article intended for human use in diagnosis, prevention, monitoring, treatment, or alleviation of disease, injury, or handicap; investigation, replacement, or modification of anatomy or physiological processes; or conception control. It does not achieve its primary action by pharmacological, immunological, or metabolic means. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Active Medical Device
An active medical device relies on electrical energy or other power sources (not human body or gravity) for operation, converting such energy. Standalone software is considered active. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Devices for Clinical Investigation
These are devices used by qualified medical practitioners in clinical investigations under Annex XVI, nº 13 of Law-Decree nº 145/2009, in appropriate clinical environments. They must be labeled 'solely for clinical research' and used only under authorized supervision. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Custom-Made Medical Device
A custom-made device is manufactured according to a qualified medical practitioner's written prescription with specific design characteristics for sole use by a particular patient, excluding mass-produced adapted devices. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Medical Device Systems and Sets
These are collections of devices packaged and marketed together under one trade name for specific medical procedures. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
3. Boundaries and Responsibilities
Boundary with Other Products
The boundaries between medical devices and other products are defined in separate guidelines. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Distributor's Role
Distributors are not responsible for placing devices on the market; this falls to the manufacturer. Distributors handle distribution activities. Under other laws, the entity placing products on the national market may bear liability. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Manufacturer Definition
The manufacturer is the natural or legal person responsible for design, manufacture, packaging, and labeling before placing the device on the market under their name, even if operations are outsourced. Only the manufacturer can request conformity evaluation and place devices on the market. They must train and select distributors to ensure quality, safety, and performance. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Authorized Representative
Non-EEA manufacturers must appoint an Authorized Representative established in the Community, who assumes liability to authorities. One representative per device type is required. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
4. Classification and Risk
Medical devices are classified into four risk classes under Directive 93/42/EEC: Class I (low risk), Class IIa and IIb (medium risk), and Class III (high risk). Classification is based on duration of contact, degree of invasion, affected anatomy, and technical risks. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
5. CE Marking and Conformity
Meaning of CE Marking
The CE marking is a prerequisite for market placement and free circulation, guaranteeing conformity to essential requirements. It must be affixed legibly, visibly, and indelibly by the manufacturer on devices, except custom-made or for clinical research. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Characteristics of CE-Marked Devices
CE-marked devices must suit their intended purpose with specified technical specifications, materials, and processes. They must be safe with acceptable risks versus benefits and maintain characteristics without endangering health over their lifespan. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Code Number
A four-digit code indicates involvement of a Notified Body for certain devices (sterile or measuring Class I, IIa, IIb, III, and active implantable). Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Notified Body
A Notified Body is appointed by National Authorities and recognized by the European Commission. It conducts conformity evaluations, authorizes CE marking, issues/renews certificates, ensures quality system compliance, and cooperates with authorities. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Proving Authenticity
Authenticity is proven by the EC Declaration of Conformity plus Competent Authority confirmation for Class I or custom-made devices, and plus the EC Certificate for higher classes. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Recognizing EC Certificate
An EC Certificate includes references to the Directive, procedure/annex, device description, manufacturer/representative details, issue and validity dates, and Notified Body information. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Obtaining CE Marking
The process varies by class under Law-Decree nº 145/2009: Annex VIII for custom-made; Annex VII + EC Declaration for Class I; combinations of annexes for sterile/measuring Class I and higher classes. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
6. Authority and Surveillance
Market Control
The Portuguese Competent Authority (INFARMED) ensures implementation of the Directive, compliance, and safety for patients, users, and third parties. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
INFARMED Competence
INFARMED has competence over all types of medical devices, including active, custom-made, implantable, in vitro, and those for clinical investigation, as well as market surveillance. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Authority Functions
Functions include adopting rules, participating in EU bodies, settling disputes, assessing clinical research, evaluating/recording Class I/custom-made notices, conducting market surveillance, and contributing to the EU database. Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
Checking Compliance
Compliance is checked by the manufacturer for Class I/custom-made/systems (Declaration + notification) and by a Notified Body for higher classes/sterile/measuring (Certificate). Source: https://www.infarmed.pt/web/infarmed-en/medical-devices/medical-devices-md-faq
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