Medical Device Registration Expert Dossier Filing

Before any form is filed, one decision shapes everything that follows: the risk class of your device. CDSCO classifies devices from Class A (low risk, such as surgical dressings and tongue depressors) through Class B and C to Class D (high risk, such as heart valves, cardiac stents and implantable devices). That single classification determines which licensing authority reviews your file, which application form applies, the government fee, the depth of technical evidence required, and whether a physical plant inspection is triggered.

Misclassification is the most expensive early mistake we see. A device filed one class too low is flagged during technical review and forced back for refiling under the correct class — often after test reports and documentation have already been prepared against the wrong requirements, costing months. We begin every engagement with a formal classification assessment mapped against CDSCO's published classification lists and risk-rule logic, so the pathway is correct before a rupee is spent on testing.

• Class A — low risk: state-level MD-5 licence, lightest documentation.
• Class B — low-moderate risk: state MD-5 with fuller technical evidence.
• Class C — moderate-high risk: central MD-9, joint inspection likely.
• Class D — high risk: central MD-9 with expert-committee scrutiny and full clinical evidence.

A CDSCO application succeeds or fails on the quality of its technical dossier. The core of the file is the Device Master File — design and manufacturing detail, material specifications, sterilisation validation, biocompatibility data under the ISO 10993 series, and a risk management file to ISO 14971 — supported by a Plant Master File describing the manufacturing site. For imports, a Free Sale Certificate from the country of origin and evidence of the device's regulatory status elsewhere strengthen the file considerably.

The single most common cause of delay after submission is the query cycle. Reviewers routinely return clarification requests on test methodology, labelling claims, or a gap in the Device Master File, and each unanswered query stalls the clock. Our query desk is staffed by the same specialists who built the dossier, so responses go back with full technical context and typically close a query in one round rather than triggering a second. This is what keeps a Class C or D registration inside the six-to-nine-month band rather than stretching well beyond it.