--- title: "IDE Supplement, Definition | MedTech Terms" description: "Amendment to an approved Investigational Device Exemption for protocol or device changes. 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[Home](/) 2. / 3. [Terms](/terms) 4. / 5. [Clinical & Trials](/terms?cat=Clinical%20%26%20Trials) 6. / 7. IDE Supplement [All terms](/terms) Clinical & Trials [Clinical Evidence](/ecosystems/clinical-evidence) # IDE Supplement Amendment to an approved Investigational Device Exemption for protocol or device changes. Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 5, 2026 ## Definition An [IDE](/terms/ide) supplement notifies FDA of changes to an approved IDE - including device modifications, protocol amendments, and investigator additions - and may require prior FDA approval depending on significance. What the regulation says The FDA, under 21 CFR 812.35, outlines the requirements for [Institutional Review Board](/terms/irb) (IRB) and FDA approval of an [Investigational Device Exemption](/terms/ide) (IDE) application, including modifications and supplements. Sponsors must notify the FDA of changes to an approved IDE, and the need for prior FDA approval depends on the significance of the change to the investigation as detailed in 21 CFR 812.35 (a) and (b). ## What this means in practice Significant changes (e.g., risk profile, indication, [primary endpoint](/terms/primary-secondary-endpoint)) require approval before implementation; minor changes can be reported in the annual report. ## Examples - A sponsor submits an IDE supplement for a device modification that changes the material of a patient-contacting component, requiring prior FDA approval. - An investigator adds a new study site and principal investigator, which is submitted as an IDE supplement for FDA review and approval. - A change to the primary efficacy endpoint of a clinical trial necessitates an IDE supplement requiring prior FDA approval before continuing the study. Common pitfalls - • Failing to distinguish between significant and minor changes can lead to unapproved study modifications and regulatory non-compliance. - • Submitting supplements with insufficient data or justification can result in delays and requests for additional information from the FDA. - • Not understanding the specific reporting timelines for different types of changes can lead to non-conformance with FDA regulations. - • Assuming that all changes can be reported in the annual report without prior FDA review is a common mistake. - • Neglecting to update all relevant study documents, such as the IDE application and informed consent forms, after a supplemental approval can create inconsistencies. ## Frequently asked questions What constitutes a 'significant' change in an IDE supplement? A significant change, as per 21 CFR 812.35(a), includes modifications that could affect the study's scientific soundness, the rights, safety, or welfare of subjects, or the investigation's design, such as changes in device material, [primary endpoint](/terms/primary-secondary-endpoint), or patient population. When is prior FDA approval required for an IDE supplement? How are minor changes handled for an IDE? What is the typical timeframe for FDA review of an IDE supplement? ## Cross-references ### Follows Comes after in a typical workflow or lifecycle. - [ Investigational Device Exemption(IDE) ](/terms/ide) ## Related terms Grouped by theme ### Editor's picks · Hand-selected related concepts [ Clinical & Trials Investigational Device Exemption(IDE) FDA authorization to use an investigational device in a clinical study. ](/terms/ide)[ Clinical & Trials Institutional Review Board(IRB) Board that reviews and approves human-subjects research at an institution. ](/terms/irb) ### Clinical Trials & Evidence · From this learning path [ Clinical & Trials IDE Annual Progress Report Annual report sponsors must submit to FDA summarizing the progress of an approved IDE study, including enrollment, deviations, and adverse events. Adjacent lesson ](/terms/ide-annual-report?from=clinical-trials-and-evidence)[ Clinical & Trials Adaptive Trial Design Trial design that pre-specifies opportunities to modify aspects (sample size, arms, endpoints) based on interim data. ](/terms/adaptive-trial?from=clinical-trials-and-evidence)[ Clinical & Trials Adverse Event(AE) Any untoward medical occurrence in a subject, whether or not related to the device. ](/terms/adverse-event?from=clinical-trials-and-evidence)[ Clinical & Trials Clinical Evaluation Report(CER) Documented assessment of clinical data demonstrating EU MDR conformity for a device. ](/terms/cer?from=clinical-trials-and-evidence) ### More in Clinical & Trials · Same category [ Clinical & Trials Feasibility Study Small clinical study evaluating initial safety, usability, and design parameters of an investigational device. ](/terms/feasibility-study)[ Clinical & Trials Informed Consent Voluntary, informed agreement to participate in research after disclosure of risks and benefits. ](/terms/informed-consent) Cited by Where this term appears across MedTech Terms. Learning paths (1) - [Clinical Trials & Evidence](/paths/clinical-trials-and-evidence)Lesson 2 of 18 Ecosystems (1) - [Clinical Evidence](/ecosystems/clinical-evidence) ## Primary references 3 sources Link health: 3 verified · last checked 2026-06-20 FDA· 1 NIH· 1 ICH· 1 1. [1 IDE Modifications Verified FDA · fda.gov ](https://www.fda.gov/medical-devices/investigational-device-exemption-ide/ide-approval-process) 2. [2 ClinicalTrials.gov Verified NIH · clinicaltrials.gov ](https://clinicaltrials.gov/) 3. [3 ICH Guidelines Verified ICH · ich.org ](https://www.ich.org/page/ich-guidelines) Inline markers like \[1\] jump to the matching reference above. Sponsor note ### Clinical evidence intersecting with device security? We support clinical-stage MedTech teams whose investigational devices touch patient data or hospital networks. [Book a 30-minute discovery session](https://go.bluegoatcyber.com/meetings/blue-goat-cyber/discovery-session) - No obligation - Expert-led from minute one - NDA available on request MedTech Terms is a community resource sponsored by [Blue Goat Cyber](https://bluegoatcyber.com). Definitions are independent of any vendor. On this term Category Clinical & Trials Sources 3 Updated 5/5/2026 [Compare with another term](/compare?a=ide-supplement) Learn in 60 seconds Card Lesson Quiz Amendment to an approved Investigational Device Exemption for protocol or device changes. - · Significant changes (e.g., risk profile, indication, primary endpoint) require approval before implementation; minor changes can be reported in the annual report. Remember this Watch out: Failing to distinguish between significant and minor changes can lead to unapproved study modifications and regulatory non-compliance. Related terms - [Investigational Device Exemption(IDE) ](/terms/ide) - [Institutional Review Board(IRB) ](/terms/irb) You may also need Auto-suggested from Clinical & Trials and shared keywords. - [Investigator Brochure(IB) ](/terms/investigator-brochure) - [Protocol Deviation ](/terms/protocol-deviation) - [IDE Annual Progress Report ](/terms/ide-annual-report) - [Decentralized Clinical Trial(DCT) ](/terms/decentralized-clinical-trial) - [Investigator-Initiated Trial(IIT) ](/terms/investigator-initiated-trial) - [Trial Master File(TMF) ](/terms/trial-master-file) [All Clinical & Trials terms](/terms?cat=Clinical%20%26%20Trials) From the Blue Goat network Related resources and services on this topic. - [ MedTech Launchpad MedTech funding rounds, accelerators, and launch resources. ](https://medtechlaunchguide.com) MedTech Terms An authoritative, plain-language reference for the regulatory, quality, cybersecurity, and software terms that shape modern medical devices. 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