Classification Overview

NMRA · EU-derived classification · General devices + IVDs

Two Classification Systems

Device Type	Framework	Classes
General medical devices	EU Medical Device Directive-derived (NMRA adapted)	Listed Device · Class I · IIa · IIb · III
IVD medical devices	NMRA IVD rules	Class A · B · C · D

General Medical Device Classification — LK-Unique

Sri Lanka's classification for general devices is derived from EU Medical Device Directive principles (with local NMRA adaptations), not from ASEAN AMDD. This gives Sri Lanka a uniquely EU-aligned classification system among South and Southeast Asian markets.

Class	Risk Level	MDEC Review?	Examples
Listed Device	Very low / well-established	No	Certain simple, well-known low-risk devices
Class I	Low	No	Non-sterile bandages, examination gloves (non-sterile), tongue depressors
Class IIa	Moderate-low	No	Hearing aids, dental filling materials, ultrasound diagnostic equipment
Class IIb	Moderate-high	Typically Yes	Lung ventilators, infusion pumps, bone fixation plates
Class III	High	Yes	Heart valves, coronary stents, implantable defibrillators

Reliance Pathway and Classification

The reliance pathway introduced in October 2025 is available for Class I, IIa, and IIb devices. Class III devices continue to require MDEC review regardless of reference country approval.

IVD Classification — Class A, B, C, D

Class	Risk	Examples	Notes
A	Low	General lab instruments, culture media	May still require registration — check NMRA
B	Moderate-low	Pregnancy tests, blood glucose self-test	Registration required
C	Moderate-high	HIV confirmatory, hepatitis B, PSA tests	Registration required; MDEC may review
D	High	Blood donor screening: HIV, HCV, West Nile	Registration required; highest scrutiny

Classification Rules

Classification rules for both general devices and IVDs are published in the NMRA Guideline for Classification of Medical Devices in Sri Lanka. General device rules follow EU MDD classification logic based on:

• Intended purpose — the manufacturer's stated clinical function
• Invasiveness — non-invasive, orifice-invasive, body cavity invasive, implantable
• Duration of contact — transient (< 60 min), short-term, long-term
• Active or non-active — energy-dependent or not
• Anatomical location — central nervous system and cardiovascular contact = higher risk

Tie-Breaking Rule

If a device falls under multiple classification rules, the highest class applies.

Practical Classification Steps

1. Obtain the NMRA Classification Guideline from the NMRA website
2. Define the device's intended purpose as the manufacturer states it
3. Apply all applicable classification rules
4. Assign the highest class indicated
5. Document the classification rationale — this is required in the Consolidated Dossier
6. If uncertain, contact the NMRA Medical Devices Regulatory Division for a classification opinion before submitting

EU classification knowledge transfers

Regulatory professionals familiar with EU MDR classification will find the Sri Lanka rules highly familiar. Existing EU classification justification documentation can form the basis of the NMRA classification rationale, adapted for NMRA's specific rules.