The 510(k) pathway is the most common route to market for Class II medical devices in the United States. The core of a successful 510(k) is proving that your new device is "substantially equivalent" to a legally marketed predicate device. This doesn't mean identical; it means the device has the same intended use and the same technological characteristics, or different technological characteristics that do not raise new questions of safety and effectiveness.

The eSTAR Mandate

As of late 2023, the FDA requires all 510(k) submissions to be provided using the electronic Submission Template And Resource (eSTAR). This interactive PDF template is designed to ensure all required components are present before the submission can be finalized, drastically reducing Refuse to Accept (RTA) holds.

Top Reasons for 510(k) Additional Information (AI) Requests

• Inadequate Biocompatibility Testing: Failing to fully test according to FDA's specific guidance on ISO 10993-1.
• Software Documentation Gaps: Incomplete architecture diagrams or cybersecurity risk assessments for Software in a Medical Device (SiMD).
• Poor Predicate Selection: Choosing a predicate that has been subject to recalls, or relying on "split predicates" incorrectly.

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