Regulatory Q&A Forum
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When a manufacturer develops a new, low-risk medical device, such as a simple software tool for organizing patient information or a basic patient-examination accessory, they may initially determine it...
While the FDA's risk-based classification system establishes that General Controls apply to all medical devices and Special Controls are required for most Class II devices, how does a sponsor translat...
What biocompatibility testing is required for a 510k under ISO 10993?
For a medical device requiring patient contact, such as a new surgical instrument or catheter, how does a sponsor develop a robust and defensible biocompatibility evaluation plan for a 510(k) submissi...
The annual FDA medical device establishment registration and listing renewal, mandated between October 1st and December 31st, is a critical compliance activity. For establishments that manufacture or ...
When a medical device manufacturer receives an FDA Form 483 with observations pointing to systemic quality system deficiencies, such as inadequate CAPA procedures or gaps in design control documentati...
How to determine substantial equivalence if my device has new technology?
When a manufacturer develops a device with the same intended use as a predicate but incorporates novel technological characteristics—such as an AI-based diagnostic algorithm or a new composite materia...
What is the real 510k review time including FDA holds?
While the FDA's performance goal for a 510(k) review is often cited as 90 FDA Days, experienced regulatory professionals understand that the total calendar time from submission to clearance is typical...
How do I respond to an FDA RTA hold on my 510k submission?
When a 510(k) submission for a Class II device, such as a novel patient monitor or orthopedic implant, receives a Refuse to Accept (RTA) hold, the 90-day review clock is paused, creating significant p...
When a medical device manufacturer receives an FDA Form 483 with observations citing systemic deficiencies, such as an inadequate CAPA process or insufficient process validation, what are the key stra...
For a manufacturer of a Class I medical device, such as a manual surgical instrument or a basic health data application, that is exempt from 510(k) premarket notification, what constitutes a comprehen...
How to properly format a substantial equivalence comparison table?
When preparing a 510(k) submission for a medical device that has technological differences compared to its predicate—such as a patient monitoring system with a novel sensor material or a significantly...
What are the most common reasons for a 510k Refuse to Accept (RTA) letter?
Beyond common administrative oversights like incorrect user fees or missing organizational forms, what are the critical, yet often overlooked, content-related deficiencies that cause a 510(k) submissi...
How do I respond to an FDA 510k Additional Information request letter?
For a medical device sponsor navigating an FDA Additional Information (AI) request during a 510(k) review, what constitutes a best-practice framework for developing a response that is not only complet...
How to justify substantial equivalence with multiple predicate devices?
When preparing a 510(k) submission for a device that combines features from multiple legally marketed products—such as an orthopedic implant using a well-established core design from Predicate A but i...
For a manufacturer of a Class I medical device exempt from 510(k) premarket notification, what is a comprehensive and practical framework for implementing FDA’s General Controls? Moving beyond a simpl...
For manufacturers of Class I medical devices that are exempt from 510(k) premarket notification, such as non-sterile tongue depressors or elastic bandages, what are the specific, non-negotiable requir...
What is the total cost of a 510k submission including consultant fees?
For a medical device company planning a 510(k) submission for a Class II device, such as a new surgical instrument, what is a comprehensive framework for budgeting beyond the standard FDA user fee, wh...
What are common eSTAR rejection reasons for a 510k submission?
With the mandatory transition to the eSTAR format for 510(k) submissions, avoiding a Refuse-to-Accept (RTA) decision has become a critical first hurdle. While the template provides structure, it also ...
How do FDA hold days affect the 510k review clock?
While the FDA’s goal for a traditional 510(k) review is 90 calendar days, this timeline represents "FDA Days" and can be paused. A common event that disrupts this clock is the issuance of an Additiona...
What is the response time for an FDA 510k Additional Information request?
When a 510(k) submission is placed on hold due to an FDA Additional Information (AI) request, sponsors face a critical 180-day window to submit a complete response before the submission is considered ...