Your documentation checklist: getting it right the first time

As we’ve written about in a previous blog posting, documentation is a critical element in the regulatory review and approval process for medical devices. Yet, product development teams often fail to understand regulatory requirements regarding documentation that are applicable to their devices, or to devote sufficient time to preparing detailed documentation covering key aspects of their product development and testing processes.

Specific documentation requirements can vary, depending on a device’s risk classification or on market-specific regulatory requirements. But there are several documentation components that are commonly applicable to all types of devices and required by the majority of regulators.

Here’s a quick checklist that you can follow in assembling your documentation package prior to regulatory review and approval:

1. Technical documentation

This includes system drawings and illustrations, device schematics, printed circuit board (PCB) layouts, and wiring and insulation diagrams. It should also include a detailed bill of device materials, a list of critical components, and applicable datasheets.  

In our experience, one of the documents that many customers have challenges obtaining is the insulation diagram. An example of the document can be found below.
For a pdf version, please click on the image. 

Insulation diagram

Another document which many customers want to understand better is the list over critical components. An example can be found here.

2. Test reports and component certifications

Reports of preliminary testing conducted either by your organization or a trusted third-party provide documented evidence of your efforts to rigorously evaluate the safety and performance of your device. Component approvals (certificates and/or test reports) can significantly streamline device review and certification.

An example of a CB certificate can be found here.

3. Risk management file and supporting documentation

A risk management file prepared in accordance with the requirements of ISO 14971 and covering the risk management requirements in the IEC 60601 series provides details on your analysis, evaluation and control of all foreseeable risks associated with your device, and is mandatory for medical device approval in most markets.

Our experience is that a risk management file is often what result in delays since many companies don't know where to start. An example of a risk management file checklist can be found here. Many companies will ask design companies and consultants for assistance in this phase. 

4. Software/PEMS documentation

ISO 62304 requires documentation of the development process for software that is integral to a given medical device, from planning and design through to implementation, verification and integration testing. In addition, the amended 3rd edition of IEC 60601-1 requires documentation of any programmable element (also referred to as “programmable electrical medical systems” or PEMS) integrated into a medical device.

5. Usability documentation

The documentation portfolio for a medical device should also include evidence of device usability, as defined in IEC 60601-1-6 and IEC 63266-1. Also known as human factors engineering, usability engineering evaluates potential risk associated with a device when used in accordance with prescribed procedures.

6. Marking labels

Marking labels applied or attached to a medical device provide important information to users, including warnings and other cautions. Descriptions and illustrations of all markings, symbols and signs should be thoroughly documented.

An example of some marking labels are seen below.

Marking label - example

7. User instructions and other documentation

Finally, user instructions and all other documentation supplied with a medical device should be documented and catalogued.

Use this checklist to evaluate your own documentation collection and preparation processes. Better yet, find ways to integrate rigorous documentation requirements throughout the span of your organization’s product development cycle. Doing so can help avoid unexpected surprises and costly delays in successfully bringing your medical device to market.

If you think you can benefit from any assistance from our experts, please feel free to contact us at

Written by Andreas Nilsson
Andreas Nilsson is the leader of the CoE(Centre of Excellence) for Medical Electrical Equipment in the Nemko Group. He has 14 years of experience working with the IEC 60601 series of standards. He has a Master of Science degree in Electrical Engineering, with emphasis on Medical Technology, from the Royal Institute of Technology in Stockholm, Sweden. Andreas is active in several working groups in the international standardization committee for Medical Electrical Equipment –IEC TC 62. He is the convener of IEC SC 62A/MT 30 dealing with fire and temperature hazards in IEC 60601-1 and also the chairman of NEK NK 62 in Norway. He is also an expert of the IECEE CTL-3 and a technical assessor under the IECEE CB Scheme.

Watch our on-demand webinar: An introduction to regulatory requirements for medical electrical equipment