CER Writing Services by Spiral Medical Development: Precision Clinical Evidence for Regulatory Success

The specialist CER partner medical device manufacturers trust to get it right — first time.

Getting a Clinical Evaluation Report (CER) wrong is potentially a costly mistake for commercial timelines. Since it has become the law of the land (specifically in the EU), Notified Bodies review CER submissions fairly strictly under EU MDR 2017/745 — and the consequences of non-compliance extend far beyond a simple request for additional information. Delayed CE marking, stalled product launches, and even market withdrawal are all real outcomes of a poorly executed CER.

Spiral Medical Development exists to lower your risk of these mishaps. As a specialist medical device regulatory consultancy, Spiral Medical Development provides comprehensive, end-to-end CER writing services built on genuine scientific rigor, deep regulatory expertise, and a thorough understanding of exactly what Notified Bodies demand from clinical evidence submissions today.

This article details everything you need to know about Spiral Medical Development's CER writing services — what they cover, how they work, who they serve, and why manufacturers across the globe choose Spiral as their trusted clinical evaluation partner.

Why Medical Device Manufacturers Choose Spiral Medical Development for CER Writing

The medical device regulatory landscape has transformed dramatically since the full application of EU MDR. Manufacturers who previously relied on legacy CERs prepared under the older MDD framework are discovering that those documents bear little resemblance to what is required today. The gap between an MDD-era CER and a fully MDR-compliant clinical evaluation is substantial — and bridging that gap demands specialist knowledge that most in-house teams simply do not have.

Spiral Medical Development was built specifically to address this challenge. Here is why manufacturers consistently choose Spiral over generalist regulatory consultancies:

• Dedicated clinical evaluation specialists: Spiral's team is composed of clinical evaluation professionals and medical writers who focus on clinical evidence, not generalist regulatory support. This depth of specialisation translates directly into higher-quality CER outputs.

• Notified Body insight: Spiral's consultants have direct experience working with major EU Notified Bodies (BSI, TUV, Dekra, and others) and understand precisely what examiners look for — and what triggers requests for clarification or rejection.

• Scientific credibility: Every CER produced by Spiral is grounded in real clinical science, not regulatory box-ticking. Clinical evidence is analysed with the same rigour expected in peer-reviewed publication.

• Transparent, milestone-driven delivery: Clients always know exactly where their CER stands, with structured review points and clear deliverable timelines built into every engagement.

• Integrated regulatory perspective: Spiral does not write CERs in isolation. Every CER is developed with full awareness of the broader technical file, risk management documentation, and post-market surveillance system — ensuring seamless alignment across the entire regulatory submission.

Spiral Medical Development has supported manufacturers from start-ups to multinationals across cardiovascular, orthopaedics, wound care, SaMD, IVD, and many more device categories — delivering CERs that stand up to the most rigorous Notified Body scrutiny.

Spiral Medical Development's CER Writing Services: Full Service Breakdown

Spiral Medical Development offers a fully integrated suite of CER and clinical evaluation services, designed to support manufacturers at every stage of the clinical evidence lifecycle — from initial regulatory strategy through to ongoing post-market maintenance.

Service 1: Clinical Evaluation Strategy and Regulatory Planning

Before a single word of a CER is written, Spiral's team invests significant effort in understanding your device, its clinical context, and the most viable regulatory strategy for building your clinical evidence case. This strategic foundation is what separates a CER that sails through Notified Body review from one that generates a 40-point request for additional information.

Spiral's regulatory planning service covers:

• Detailed review of your device's intended purpose, indications for use, and target patient population

• Assessment of the existing clinical evidence landscape for your device and comparable technologies

• Evaluation of equivalence viability under MDR criteria, if applicable

• Identification of evidence gaps and development of a strategy to address them

• Regulatory risk assessment and timeline planning aligned to your CE marking milestone

• Guidance on whether a clinical investigation and/or post-market clinical follow-up (PMCF) is required to supplement evidence

This upfront strategic work ensures that every subsequent stage of the CER process is efficient, targeted, and aligned to a clearly defined regulatory outcome.

Service 2: Clinical Evaluation Plan (CEP) Development

The Clinical Evaluation Plan is a mandatory document under EU MDR Annex XIV, Part A — and under-resourced or poorly structured CEPs are a recurring source of Notified Body criticism. Spiral Medical Development develops comprehensive, device-specific CEPs that establish the full framework for the clinical evaluation before any data collection begins.

Spiral's CEPs document:

• The intended purpose and clinical claims to be supported by the evaluation

• The clinical evaluation methodology, including the data identification strategy and appraisal criteria

• The equivalence strategy, with full justification of technical, biological, and clinical equivalence criteria, if applicable

• The clinical outcomes and performance endpoints relevant to the device's intended use

• The predefined acceptance criteria for safety and clinical performance

• The relationship between the CEP, the risk management file, and the PMCF plan

A well-constructed CEP does more than satisfy a regulatory checkbox — it provides a defensible, documented rationale for every methodological decision made in the CER, significantly reducing the risk of challenge during Notified Body review.

 Service 3: Systematic Literature Search and Evidence Identification

The systematic literature search is the empirical backbone of any CER, and it is an area where many in-house CER attempts fall short. Notified Bodies are increasingly critical of literature searches that lack rigour, transparency, or reproducibility — and a poorly conducted search can undermine the credibility of an entire clinical evidence submission.

Spiral Medical Development conducts fully documented, PRISMA-compliant systematic literature searches across all relevant biomedical databases, including:

• PubMed / MEDLINE

• EMBASE

• Cochrane Library

• ClinicalTrials.gov and EU Clinical Trials Register

• Device-specific registries and surveillance databases

• Grey literature sources including regulatory agency databases (MAUDE, EUDAMED, MHRA)

Every search is conducted using pre-defined, reproducible search strings documented in full, with inclusion and exclusion criteria clearly specified and justified. PRISMA flow diagrams are produced for every search, providing Notified Bodies with complete transparency on the evidence identification process.

Crucially, Spiral's literature searches cover not only clinical performance data but also safety data, state-of-the-art information, and data on alternative technologies — ensuring the CER's benefit-risk analysis is grounded in the full clinical landscape.

Service 4: Clinical Data Appraisal and Quality Assessment

Identifying clinical evidence is only part of the challenge — critically appraising that evidence for scientific validity, relevance, and applicability to your specific device is where genuine clinical expertise becomes indispensable.

Spiral Medical Development's clinical evaluation specialists appraise every identified piece of evidence against a pre-defined, methodologically rigorous framework that assesses:

• Study design quality and level of evidence (Randomized Clinical Trials (RCTs), cohort studies, registry data, case series, expert opinion)

• Relevance to the device's intended purpose, patient population, and clinical setting

• Risk of bias and potential confounding factors

• Adequacy of statistical methodology and reporting

• Applicability to the equivalence claim (where relevant)

• Contribution to the overall body of evidence for safety and clinical performance

This appraisal process is fully documented in the CER, with each clinical study or data source assigned a suitability and contribution score that forms part of the transparent evidence hierarchy presented to the Notified Body. Spiral's approach ensures that evidence is weighted appropriately — robust RCT data is treated differently from case reports, and the clinical conclusions drawn from the analysis reflect that distinction with precision.

Service 5: Equivalence Assessment Under EU MDR - if Applicable

Under EU MDR, claiming equivalence to another device as the basis for clinical evidence is significantly more complex and restrictive than it was under the previous MDD framework. In best practices, equivalence is not used, because MDR Annex XIV imposes strict technical, biological, and clinical equivalence criteria.

Navigating these requirements demands specialist knowledge, and Spiral Medical Development has extensive experience developing equivalence arguments that withstand Notified Body scrutiny.

Spiral's equivalence assessment service includes:

• A structured comparison of your device against the proposed equivalent across all MDR Annex XIV criteria

• Detailed justification of equivalence claims at the technical level (design, materials, specifications, deployment method)

• Biological equivalence assessment including materials, contact duration, and biocompatibility considerations

• Clinical equivalence justification addressing intended purpose, target population, and clinical conditions

• Documentation of access arrangements for third-party technical files where required

• Gap analysis and risk assessment of any areas where full equivalence cannot be demonstrated

Where intra-company equivalence is available — for example, within a product family — Spiral provides clear, documented justification that supports the use of clinical data across related device lines. Where equivalence is not viable, Spiral advises on the most appropriate alternative clinical evidence strategy.

Spiral Medical Development's equivalence assessments are among the most rigorous in the industry — built to anticipate and pre-empt the specific questions Notified Bodies ask when reviewing equivalence claims under MDR.

Service 6: Full CER Writing and Document Compilation

The core deliverable of Spiral's service is a publication-quality, fully MDR-compliant Clinical Evaluation Report — a document that presents the totality of clinical evidence for your device in a structured, scientifically rigorous, and regulatory-ready format.

Every CER produced by Spiral Medical Development is authored by qualified clinical evaluation specialists and structured in accordance with MDR Annex XIV and MEDDEV 2.7/1 Rev 4, covering all mandatory sections:

Spiral's CERs are written to be not merely compliant, but genuinely persuasive — presenting clinical evidence in a clear, logical, and scientifically credible manner that makes the Notified Body's assessment as straightforward as possible.

Service 7: CER Gap Analysis and Remediation

Not every manufacturer comes to Spiral with a blank slate. Many have existing CERs — prepared in-house, under MDD, or by another consultant — that are no longer fit for purpose under current MDR requirements. Spiral Medical Development offers a structured CER gap analysis service that identifies precisely where an existing CER falls short and provides a clear remediation roadmap.

Spiral's gap analysis assesses existing CERs against:

• Current MDR Annex XIV requirements and latest MDCG guidance documents

• MEDDEV 2.7/1 Rev 4 methodology standards

• Notified Body common findings and known areas of regulatory focus

• Adequacy and currency of the clinical evidence base

• Completeness and rigor of the systematic literature search

• Strength and documentation of the equivalence argument

• Integration with post-market surveillance and PMCF data

Following gap analysis, Spiral provides a prioritized remediation plan and, where required, undertakes targeted CER updates, partial rewrites, or full CER reconstruction to bring the document into full MDR compliance.

 Service 8: CER Maintenance and Periodic Updates

Under EU MDR, the CER is not a document you write once and file away. Article 61 and Annex XIV require manufacturers to keep their CER up to date throughout the device lifecycle — and for Class IIb and Class III devices, the CER must be updated at least annually. For Class IIa devices, updates are required when there is a significant change to the device or its clinical evidence base.

Spiral Medical Development offers an ongoing CER maintenance service designed to keep your clinical evaluation current, audit-ready, and aligned to the latest regulatory expectations. The maintenance service includes:

• Annual literature search updates to identify new clinical data published since the last CER review

• Integration of new PMCF data, including data from registries, surveys, literature follow-up, and clinical studies

• Incorporation of updated post-market surveillance data, trend analysis, and vigilance information

• Review and update of the state-of-the-art section to reflect developments in alternative technologies and standard of care

• Assessment of any new safety signals or emerging clinical concerns identified in the literature or post-market data

• Revision of benefit-risk conclusions where warranted by new evidence

• Version control, document history management, and QMS integration support

Spiral's maintenance service ensures that your CER never becomes a liability — it remains a living, current document that continues to demonstrate the clinical evidence base supporting your device's safety and performance throughout its market lifecycle.

Service 9: Post-Market Clinical Follow-Up (PMCF) Planning and Reporting

The CER and the Post-Market Clinical Follow-Up plan are inseparable under EU MDR. The CER identifies the residual clinical uncertainties and unanswered clinical questions that PMCF activities must address — and in turn, the data generated by PMCF activities feeds back into subsequent CER updates.

Spiral Medical Development provides comprehensive PMCF support that ensures this cycle is properly documented and effectively implemented:

• PMCF Plan Development: Spiral writes detailed, device-specific PMCF Plans that clearly specify the PMCF objectives, rationale, methods, and timelines — addressing the specific clinical evidence gaps identified in the CER.

• PMCF Method Selection: Depending on the device, evidence gaps, and risk classification, Spiral advises on the most appropriate PMCF methods — including PMCF studies, systematic literature reviews, registries, patient questionnaires, and healthcare provider surveys — and develops the corresponding protocols and data collection instruments.

• PMCF Evaluation Report (PMCFER) Writing: Spiral produces comprehensive PMCF Evaluation Reports that document, appraise, and analyze PMCF data in accordance with MDR requirements and MDCG 2020-7 guidance, feeding findings directly into the updated CER.

• PMCF Study Protocol Development: Where a dedicated PMCF clinical study is required, Spiral develops study protocols aligned to ISO 14155:2020 and applicable MDCG guidance documents.

Service 10: Notified Body Response and Technical Query Support

Even the most rigorously prepared CER can generate questions from a Notified Body examiner. Spiral Medical Development provides direct support for responding to Notified Body requests for information (RFIs), technical queries, and non-conformity findings related to the clinical evaluation.

Spiral's response support service includes:

• Analysis of Notified Body questions and identification of the underlying regulatory or scientific concern

• Development of clear, evidence-based written responses that directly address examiner queries

• Supplementary literature searches or clinical data analysis to support specific responses

• Revision of CER sections where required by Notified Body feedback

• Preparation of response matrices and tracking documents to manage multi-point RFIs efficiently

Having Spiral's specialists support your RFI responses dramatically reduces the risk of protracted back-and-forth with the Notified Body, accelerating the path to approval and avoiding the reputational and commercial cost of repeated submission cycles.

Device Categories and Therapeutic Areas Served

Spiral Medical Development's clinical evaluation expertise spans the full spectrum of medical device categories, from low-risk Class I devices to the most complex Class III implantable technologies. The team has direct experience producing CERs across the following areas:

Implantable and Active Devices

• Cardiovascular implants — stents, heart valves, pacemakers, leads

• Active implantable devices — neurostimulators, cochlear implants, deep brain stimulation systems

• Orthopaedic implants — joint replacement systems, spinal fusion devices, fixation systems

• Vascular access devices and long-term implantable catheters

Surgical and Procedural Devices

• Minimally invasive surgical instruments and laparoscopic devices

• Electrosurgical and energy-based surgical systems

• Endoscopy and visualisation systems

• Wound closure and anastomosis devices

Wound Care and Tissue Management

• Advanced wound dressings and negative pressure wound therapy systems

• Skin substitutes and dermal regeneration matrices

• Haemostatic agents and surgical sealants

Software as a Medical Device (SaMD) and Digital Health

• AI-powered diagnostic and decision-support software

• Remote patient monitoring platforms

• Clinical workflow and patient management software

• Mobile medical applications

In Vitro Diagnostic Devices (IVDs)

• Molecular diagnostics and PCR-based assays

• Immunoassay and serology platforms

• Point-of-care testing devices

• Companion diagnostics and genomic testing devices

Non-Active and General Medical Devices

• Combination products and drug-device combinations

• Ophthalmic devices including intraocular lenses and contact lens care systems

• Dental devices and oral health products

• Physiotherapy and rehabilitation devices

• Patient monitoring and diagnostic equipment

Regulatory Frameworks and Standards Underpinning Spiral's CER Services

Every CER produced by Spiral Medical Development is developed in full conformity with the current applicable regulatory frameworks and guidance documents. Spiral's team actively monitors regulatory developments to ensure all work reflects the most current requirements:

• EU MDR 2017/745: The primary regulatory framework governing medical devices placed on the EU market, including Annex XIV (Clinical Evaluation and Post-Market Clinical Follow-Up) and Annex XV (Clinical Investigations).

• EU IVDR 2017/746: The regulatory framework for in vitro diagnostic devices, including Annex XIII (Performance Evaluation, PMPF, and Performance Studies).

• MEDDEV 2.7/1 Rev 4: The definitive European guidance document on clinical evaluation methodology for medical devices, covering the full CER preparation process.

• MDCG Guidance Documents: Spiral incorporates all relevant Medical Device Coordination Group guidance, including MDCG 2020-1 (Guidance on clinical evaluation), MDCG 2020-5 (PMCF studies), MDCG 2020-6 (PMCF plan template), MDCG 2020-7 (PMCFER template), and MDCG 2020-13 (Clinical evaluation of SaMD).

• ISO 14155:2020: The international standard for Good Clinical Practice in medical device clinical investigations, applied to all clinical study protocol development and clinical data appraisal.

• ISO 14971:2019: The international standard for risk management applied to medical devices — Spiral ensures full alignment between CER conclusions and the risk management file.

• ISO/TR 20416:2020: Post-market surveillance standard providing additional context for PMS data integration into CER updates.

Spiral Medical Development's CER Writing Process: How It Works

Spiral Medical Development follows a structured, client-transparent process for every CER engagement. This process is designed to maximise quality, minimise client burden, and ensure regulatory milestones are met on time.

1. Discovery and Scoping Call — Spiral's team meets with your regulatory and clinical affairs stakeholders to understand the device in detail, review available documentation, agree the regulatory strategy, and establish the project scope, timeline, and deliverables.

2. Information Gathering and Document Review — Spiral reviews your existing technical documentation, risk management file, post-market surveillance data, and any previously prepared clinical documents to establish a complete picture of the existing evidence base.

3. Clinical Evaluation Plan Development — Spiral develops and presents the CEP for client review and approval before any literature searching begins, ensuring full alignment on methodology.

4. Systematic Literature Search Execution — Comprehensive database searches are conducted by Spiral's literature specialists, with full search documentation produced for inclusion in the CER.

5. Screening, Appraisal, and Analysis — Identified literature is screened against inclusion/exclusion criteria, critically appraised for quality and relevance, and analysed to generate evidence-based conclusions.

6. CER Drafting — Spiral's medical writers produce the full CER draft, integrating all analysis, equivalence assessments, post-market data, and benefit-risk conclusions into a complete, publication-quality document.

7. Client Review and Revision — The draft CER is submitted to the client for review, with a structured feedback process to capture and incorporate client input efficiently.

8. Internal Quality Review — The finalised CER undergoes Spiral's internal quality review process, assessed against a comprehensive compliance checklist before delivery.

9. Final Delivery and Technical File Integration — The completed CER is delivered in your required format, with support for integration into your QMS and technical file as required.

10. Ongoing Support and Maintenance — Spiral remains available to support RFI responses, periodic CER updates, and PMCF reporting throughout the product lifecycle.

Common CER Challenges Spiral Medical Development Solves

Manufacturers approaching Spiral Medical Development for CER support come with a wide range of challenges. The following are among the most common — and the most consequential — that Spiral's team is asked to address.

Challenge: Outdated MDD-Era CERs Failing MDR Scrutiny

The transition from MDD to MDR has left many manufacturers with CERs that are structurally and substantively inadequate for current Notified Body review. Spiral Medical Development performs comprehensive gap analyses and full MDR-compliant rewrites, ensuring no aspect of the clinical evaluation is left vulnerable to challenge.

Challenge: Inability to Demonstrate Equivalence Under MDR

The MDR's strict equivalence requirements have rendered many previously accepted equivalence arguments obsolete. Spiral has deep expertise in building defensible equivalence cases — and in identifying alternative clinical evidence strategies where equivalence cannot be demonstrated, preventing the costly mistake of pursuing an equivalence route that will ultimately fail.

Challenge: Insufficient Clinical Data for High-Risk Devices

Class IIb and Class III devices face the highest clinical evidence standards under MDR, and for newer or niche technologies, published clinical data may be limited. Spiral advises on structured approaches to address evidence gaps — including targeted PMCF studies, expanded literature reviews of analogous technologies, registry data extraction, and the strategic use of preclinical data — to build the most robust possible evidence base within your regulatory timeline.

Challenge: Repeated Notified Body Rejections and RFIs

Manufacturers who have experienced repeated Notified Body requests for additional information often come to Spiral for a fundamental reassessment of their CER approach. Spiral's team analyses the specific concerns raised by the Notified Body, identifies the root causes of repeated failure, and develops a targeted remediation strategy to resolve outstanding issues and achieve approval.

Challenge: Keeping CERs Current Across a Large Device Portfolio

Manufacturers with extensive device portfolios face the significant operational challenge of maintaining current, MDR-compliant CERs across hundreds of products simultaneously. Spiral Medical Development offers scalable portfolio CER maintenance programmes, providing a structured, cost-efficient approach to keeping all product CERs up to date without overwhelming in-house regulatory teams.

Frequently Asked Questions About Spiral Medical Development's CER Writing Services

How long does Spiral take to write a CER?

Project timelines vary depending on device complexity, risk classification, and the volume of available clinical evidence. As a general guide, a straightforward CER for a lower-risk device (Class I/IIa) may be completed in 4–8 weeks, while a complex CER for a Class IIb or Class III device typically requires 8–16 weeks. Expedited timelines are available where regulatory milestones require accelerated delivery. Spiral discusses realistic timelines in detail during the initial scoping call.

Does Spiral work with manufacturers outside the EU?

Yes. Spiral Medical Development regularly supports manufacturers based in the United States, Asia-Pacific, Middle East, and beyond who are seeking CE marking under EU MDR or IVDR. The CER requirements under EU MDR apply equally to all manufacturers wishing to place devices on the European market, regardless of their geographical location.

Can Spiral update a CER originally written by another consultant?

Absolutely. Spiral regularly performs gap analyses and targeted updates on CERs prepared by other parties — whether in-house teams or third-party consultants. Spiral first conducts a structured gap analysis to identify areas of non-compliance or insufficient evidence, then develops a clear remediation plan before undertaking any updates.

What device risk classes does Spiral cover?

Spiral Medical Development writes CERs for devices across all MDR risk classifications — Class I, Class IIa, Class IIb, and Class III — as well as for IVD devices under IVDR classifications A through D. Spiral has specific experience with the most demanding, high-risk device categories where the clinical evidence bar is highest.

Does Spiral provide support during Notified Body audits?

Yes. Spiral can support manufacturers during Notified Body audits and technical reviews where the clinical evaluation is under examination. This includes preparing clinical affairs personnel for examiner questions, providing written clarifications on CER methodology, and attending audit sessions in a consultancy capacity where required.

How does Spiral ensure the CER aligns with the rest of the technical file?

Spiral treats the CER as an integral part of the broader technical file, not a standalone document. During the CER development process, Spiral reviews the risk management file, device description, labelling, and post-market surveillance plan to ensure complete consistency and cross-referencing across all technical documents. Where inconsistencies are identified, Spiral flags these to the manufacturer and advises on remediation.

Partner with Spiral Medical Development: Elevate Your Clinical Evidence Strategy

The CER is the single most scrutinised document in any medical device's EU regulatory submission. Getting it right is not just about compliance — it is about demonstrating, with scientific precision and regulatory authority, that your device is safe, performs as intended, and deserves a place on the European market.

Spiral Medical Development brings together the clinical expertise, regulatory knowledge, and methodological rigour to deliver CERs that achieve exactly that outcome — consistently, efficiently, and to the standard that Notified Bodies demand.

Whether you are preparing a new CER from scratch, remediating a failing submission, maintaining a portfolio of existing documents, or building the PMCF infrastructure to sustain your clinical evidence base over time, Spiral Medical Development has the specialist capability to support you at every stage.

Ready to strengthen your clinical evidence strategy? Contact Spiral Medical Development today to discuss your CER requirements and discover how our specialist team can deliver the regulatory results your business needs.