From Concept to Industrialisation: The Strategic Guide to Product Design (Medtech Special)

In product development, and particularly in the medical sector (Medtech) , innovation is not enough. An excellent technological idea can collapse if it is impossible to manufacture at scale or if it is turned down by the regulatory authorities.

To turn a vision into a commercial and financial success, the secret lies in a holistic, sequential approach. Engineering, design, regulatory affairs and industrialisation should no longer be treated as isolated silos, but as links in the same value chain.

Here are the 4 essential stages of successful, integrated and secure product design.

Stage 1: Scoping and User Research

Where it all begins: bringing in Industrial Design

All too often, industrial design is seen as a coat of aesthetic varnish applied at the end of the project. That is a major strategic mistake. Industrial design must be involved from day one.

• The design approach: This phase consists of observing, understanding and documenting the real needs of users (doctors, nurses, patients). What are the ideal ergonomics? What constraints does the environment impose (e.g. a sterile operating theatre)?

• Regulatory alignment: In the medical field, this phase lays the foundations for Usability (Human Factors Engineering), a strict requirement of standards such as IEC 62366. Documenting ergonomics from the outset ensures that the product will not be rejected later on because of use-error risks.

Stage 2: Architecture and Feasibility (Pre-concept)

The first technical and standards filter

Once user needs have been translated into features, designers and engineers work together to give the product its shape.

• The role of Design & Engineering: The overall architecture of the object is defined (placement of the electronic components, overall volume, kinematics). This is when the first prototypes are made: “empty” ones (appearance and ergonomic models) and “functional” ones (which prove that the technology works).

• The Regulatory milestone: This is where the medical device classification is determined (Class I, IIa, IIb, III under CE marking or the FDA). This classification dictates the level of clinical evidence required and how stringent the tests to come will be. The risk management analysis (ISO 14971) also begins here.

Stage 3: Detailed Development and V&V (Verification & Validation)

Where design and regulatory constraints converge

This is the most intensive phase. The product takes its final form. Every plastic part, every circuit board and every line of code is designed and specified.

• Design for Manufacturing (DFM) : The industrial designer works hand in hand with the mechanical engineers to make sure that the shapes drawn are compatible with industrial processes (plastic injection moulding, machining, etc.). Wall thicknesses are optimised, the number of screws is reduced and assembly is simplified to cut future costs.

• The Regulatory rush: Now comes V&V (Verification and Validation) testing. The product is put through the electrical safety (IEC 60601) or biocompatibility (ISO 10993) standards. Every requirement defined in stages 1 and 2 must be validated by a concrete test in order to build the technical documentation (DHF / Technical File).

Stage 4: Industrialisation and Transfer to Production

From prototype to mass production

The design is frozen and the 3D files are approved. The challenge now is to move from a prototype assembled by hand in a laboratory to thousands of units produced in a factory, repeatably and in compliance with requirements.

• Launching the tooling: This is the critical phase in which the steel injection moulds (often very expensive) are launched. The optimisation work done upstream by industrial design pays off here: fewer complex parts means cheaper moulds and a factory scrap rate close to zero.

• Industrial validation (IQ/OQ/PQ): In the medical field, you do not start selling as soon as the machine is running. The production lines must be qualified (Installation, Operational and Performance Qualification) to prove that the factory will always turn out an identical, safe product. Here, the quality management system (ISO 13485) of the company or its subcontractor acts as the conductor.

Conclusion: Design, Regulatory Affairs and the Factory form a tripod

Making a product succeed, particularly in Medtech, is a question of balance.

• Without Industrial Design, your product will be a technological feat that nobody wants or knows how to use.

• Without Regulatory work, your product will remain a laboratory prototype that cannot legally be sold.

• Without well-managed Industrialisation, your product will be too expensive to manufacture and will destroy your margins.

The secret of market leaders? Getting these three disciplines talking to each other from the scoping phase. It is the best way to shorten Time-to-Market and maximise return on investment.