Monday, July 26, 2021

EU MDR Clinical Evaluation

Hi friends!!!

In our previous blog, we have discussed about the following topics.

EU MDR Assessment Routes

EU MDR Timeline, Annex, Chapter

EU MDR Post Market Surveillance

EU MDR 2017/745 is live now. And it the most trending topic in Medical Device Regulatory Affairs field. Most of the medical device companies are in EU MDR Transition to make sure that they can sell their products in Europe. 

Therefore, it is important for Medical Device QA/RA Professionals to know in detail about EU MDR 2017/745 Clinical Evaluation.

In EU MDR 2017/745 Annex XIV, Part A talks about Clinical Evaluation.

Let’s discuss in detail about Clinical Evaluation.

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1. To plan, continuously conduct and document a clinical evaluation, manufacturers shall:

(a) establish and update a clinical evaluation plan, which shall include at least the following details

An identification of the general safety and performance requirements that require support from relevant clinical data.

A specification of the intended purpose of the device.

A clear specification of intended target groups with clear indications and contra-indications.

A detailed description of intended clinical benefits to patients with relevant and specified clinical outcome parameters.

A specification of methods to be used for examination of qualitative and quantitative aspects of clinical safety with clear reference to the determination of residual risks and side-effects.

An indicative list and specification of parameters to be used to determine, based on the state of the art in medicine, the acceptability of the benefit-risk ratio for the various indications and for the intended purpose or purposes of the device.

An indication how benefit-risk issues relating to specific components such as use of pharmaceutical, nonviable animal or human tissues, are to be addressed.

A clinical development plan indicating progression from exploratory investigations, such as first-in-man studies, feasibility and pilot studies, to confirmatory investigations, such as pivotal clinical investigations, and a PMCF as referred to in Part B of this Annex with an indication of milestones and a description of potential acceptance criteria.

(b) identify available clinical data relevant to the device and its intended purpose and any gaps in clinical evidence through a systematic scientific literature review.

(c) appraise all relevant clinical data by evaluating their suitability for establishing the safety and performance of the device.

(d) generate, through properly designed clinical investigations in accordance with the clinical development plan, any new or additional clinical data necessary to address outstanding issues.

(e) analyse all relevant clinical data in order to reach conclusions about the safety and clinical performance of the device including its clinical benefits.


2. The clinical evaluation shall be thorough and objective, and take into account both favorable and unfavourable data. Its depth and extent shall be proportionate and appropriate to the nature, classification, intended purpose and risks of the device in question, as well as to the manufacturer's claims in respect of the device.

3. A clinical evaluation may be based on clinical data relating to a device for which equivalence to the device in question can be demonstrated. The following technical, biological and clinical characteristics shall be taken into consideration for the demonstration of equivalence:

Technical: the device is of similar design; is used under similar conditions of use; has similar specifications and properties including physicochemical properties such as intensity of energy, tensile strength, viscosity, surface characteristics, wavelength and software algorithms; uses similar deployment methods, where relevant; has similar principles of operation and critical performance requirements.

Biological: the device uses the same materials or substances in contact with the same human tissues or body fluids for a similar kind and duration of contact and similar release characteristics of substances, including degradation products and leachables.

Clinical: the device is used for the same clinical condition or purpose, including similar severity and stage of disease, at the same site in the body, in a similar population, including as regards age, anatomy and physiology; has the same kind of user; has similar relevant critical performance in view of the expected clinical effect for a specific intended purpose.

Considerations of equivalence shall be based on proper scientific justification. It shall be clearly demonstrated that manufacturers have sufficient levels of access to the data relating to devices with which they are claiming equivalence in order to justify their claims of equivalence.

4. The results of the clinical evaluation and the clinical evidence on which it is based shall be documented in a clinical evaluation report which shall support the assessment of the conformity of the device. The clinical evidence together with non-clinical data generated from non-clinical testing methods and other relevant documentation shall allow the manufacturer to demonstrate conformity with the general safety and performance requirements and shall be part of the technical documentation for the device in question. Both favourable and unfavourable data considered in the clinical evaluation shall be included in the technical documentation.

Now I hope you have acquired some knowledge about EU MDR 2017/745 Clinical Evaluation. We will meet again with another valuable topic related to Biomedical Engineering, Medical Device, Healthcare.

NOTE: Dear friends!!!... Please do comment a topic related to Biomedical, so that we can discuss it in future blogs.

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