Quality knows no compromises at Walter Potthoff GmbH – Medical Systems. The safety of patients and users is our top priority. We therefore ensure you the highest level of quality.



In order to turn your product idea into reality, take advantage of our experienced developers and designers of state-of-the-art 3D-CAD tools and simulation software. In this way, we ensure that your requirements are optimally implemented throughout the entire process chain.



In clean and ultra-clean rooms we produce, among other things, injection-molded components and assemblies from almost all thermoplastics and liquid silicone. Among others, our products are used by customers in the fields of nutrition, chemotherapy, infusion, transfusion, urology and biotechnology.


We aspire to the highest quality

The highest quality knows no compromises

Customer satisfaction and, consequently, the safety of patients and users is our top priority. For this reason, we guarantee quality at the highest level. Because a precise and sterile working method is essential in medical technology, all our products are manufactured, packaged and subjected to strict quality controls with the utmost care.

As a specialist for medical injection molding parts, we are able to meet the high precision requirements for our components at all times. Manufacturing within the tightest tolerances is part of our quality standard.

An internal quality management system regulates all procedures and processes, whereby we carry out extensive tests and laboratory examinations. Component-specific tests are planned in advance and in consultation with you.

Our company is certified according to DIN EN ISO 9001, DIN EN ISO 13485 and DIN EN ISO 50001, and our clean rooms meet the ISO classes 7 and 8 according to DIN EN ISO 14644-1.

As specialists for medical injection molding we can satisfy the high precision requirements for individual components at any time. For example, tolerances of ± 0.02 mm are the standard for us in injection molding.

  • Show our test methods +
    • Leakage testing
      • In bar under water with a hermetically sealed system as well as with a water-filled system 0–2 bar
      • Measurements in an airtight system in the range of 0–3000 Pa
    • Torque testing 0–200 Ncm
    • Tension/pressure testing in the range of 0–2000 N and 0–700 mm
    • Digital hardness testing Shore A
    • Measuring projector for optical measurement
    • CNC-3D measuring machine optical and tactile
    • CAQ system for SPC monitoring and test plan management
    • Color measurement technology
    • Computer tomography for measurement, validation and component testing


Whether standard or multi-component injection molding, automated assembly or purely handmade assemblies: Our entire team is always close to the product and monitors every step of production, not only through in-process control. We always have the legally compliant documentation


For many years the CAQ system of Böhme & Weihs has been an integral part of our quality documentation. From the incoming goods inspection via SPC series monitoring and batch tracing up to the outgoing goods inspection – a continuous, reliable system!


Already during Advanced Quality Planning, we coordinate the necessary inspections with you, which we carry out in-house. Leakage checks, tensile and pressure tests, as well as dimensional and weight monitoring are thus seamlessly integrated into the documentation and, on request, provided with the delivery.

Product development with our expertise

Are you planing a product innovation or are you looking for the solution to a medical technology problem?

Our team stands at your side with our experience and creativity to support you at all stages of your value chain from the product idea through initial prototypes all the way to series production, packaging and delivery.

In addition to the project manager, who accompanies you through the entire project, your team includes employees from design, quality assurance and production.

With state-of-the-art CAD tools and simulation software, we examine the product from the very beginning and optimize it wherever necessary. This ensures that we fully meet your requirements.

We keep an eye on costs and aim for the highest quality in every step throughout the process to work with you in creating an economically successful, premium product.

Do you have any more questions? We are happy to help you!

Production according to the highest standards

Due to our long-term experience, we provide extensive know-how for medical applications. We process almost all thermoplastics, thermoplastic elastomers and liquid silicone LSR.

We manufacture our components in certified rooms of clean room classes 7 and 8.

On our modern injection molding machines we process almost all thermoplastics such as PP, PVC, ABS, MABS, PBT, PC, as well as high-tech plastics such as implantable PEEK, thermoplastic elastomers (TPE, TPU) and as a specialty liquid silicone LSR. Even 2-component parts made of thermoplastics and LSR or insert molding of tubes are part of our portfolio. Micro injection molding complements our technology portfolio.

Among others, our products are used by customers in the fields of nutrition, chemotherapy, infusion, transfusion, urology and biotechnology.

Highest Quality

Whether the annual demand consists of a few parts or we produce millions of items for you each year, the highest quality, flexibility and a close customer relationship are the most important cornerstones of our customer relations.

Decades of experience

The Walter Potthoff GmbH – Medical Systems. vast experience in plastic processing speaks for itself! In the area of medical technology, you can rely on a team with 30 years of experience in the development, design and processing of all popular thermoplastics and silicons.

Cleanroom production

The records of all relevant parameters of cleanroom production are so precise that they can be used for GMP-compliant documentation. Walter Potthoff GmbH – Medical Systems. thereby offers its customers an absolute maximum of production safety and quality.

Your success ist important to as

At Walter Potthoff GmbH – medical systems, you have a dynamic team at your side that will successfully manage your project from start to finish. We offer you what we do best: a constructive interaction of committed people, outstanding skills and extensive experience.

Our Values

Goal-oriented behaviour, ambitious implementation – according to this guiding principle, we work and communicate in the company. We believe in the meaning and importance of behaving according to ethical principles and we are always committed to the highest standards of business conduct. This is the basis of our business values.

Performance – Sustainability

Our aim is an efficient and performance-oriented manner of working, without losing sight of the whole. This means profitable growth and responsible action towards all possible stakeholders. The company does not target a quick profit, but would rather have long term success.

Motivation is a driving force for our actions, but always in the sense that “efficiency and ethics are not mutually exclusive.” The commitment to sustainability and the responsible use of resources is part of our corporate strategy.

Openness – Respect

We advocate for open and honest communication. This also includes the courage to address unpleasant things. Openness must not lead to disrespect; rather, it represents a constructive, cause-oriented “culture of debate”.

In heated discussions, respect is always maintained. Within the company, respectful dealings with each other and with our customers are maintained. This means the positive evaluation of a person as a whole, but also his or her thoughts, work and behaviour. Openness also means being willing to change in light of new developments.

Quality – Personal Responsibility

Quality is essential and given top priority in our actions, our products and processes. We want excellence for our customers. But quality is not an end in itself, because it may lead to a control culture and overregulation.

Each individual has a responsibility for what he or she does. The sight of the bigger picture, the willingness to make decisions and to take responsibility for them are important principles. Energetically working within a reliable framework – with this we can achieve something extraordinary.

Change – Reliability

Change is a central cultural feature of Walter Potthoff GmbH – medical systems. We find ourselves in a permanent process of change. This is accompanied by the aspiration towards excellence. Change is characterized by goal-orientation, alacrity, decisiveness and a culture open to mistakes. Important sources for our will to change are our openness and creativity.

On the other side of the coin is the striving towards reliability. Reliability includes appreciative and reliable behaviour towards all known stakeholders (stakeholders: employees, customers, shareholders, etc.). An example of this is the clear and unambiguous formulation of our corporate values, which should give the people at Walter Potthoff GmbH – medical systems orientation for their actions.

Target-Orientation – Creativity

We are determined and performance oriented, but without exaggerated doggedness. We take account of the human component as well the fun side of things. Here creativity and spontaneity are important drivers that support our innovation and lead to new ideas and positive changes.

We have the corporate purpose and our goals clearly in mind. We expect all employees to actively participate with process improvement and contribute their experience and ideas to the company.


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Our address

Walter Potthoff GmbH – Medical Systems.

Osemundstraße 27 – 29
58566 Kierspe

+49 2359 50809 60
+49 2359 50809 80