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Delrin® for Medical Applications

Delrin® SC (special control) for injection moulded medical devices needing first-class mechanical properties

Delrin® SC is the industry-leading acetal for medical devices that require the highest mechanical properties. For the highest rigidity, best spring-like forces, low creep, and USP Class VI and ISO 109993 compliance, Delrin® acetal is the superior medical polymer material.

Why Delrin® SC is the experts’ first choice

Many medical devices have features which help the user to correctly administer medicine, for example dose-counting inhalers and insulin delivery pens. Inhalers rely on internal gears that index every time the inhaler is activated; insulin delivery pens are comprised of a button and spring mechanism for injecting. These types of devices depend on the most advanced engineering acetal on the market: Delrin® SC.

To understand more about how our Delrin® SC grades can reduce the activation forces of your device, please see our dedicated Delrin® Low Wear and Friction section. 

Delrin® SC has a versatile property offering which makes it an ideal polymer solution for medical designers and engineers. For example, cantilever clips rely on its spring-like properties, injector pens rely on its high tensile modulus and devices with sliding surfaces rely on its low wear and low friction properties.

Miniaturised and heavily compacted designs work best with Delrin® SC due to it having the highest rigidity of any acetals on the market. When making your parts smaller and thinner, the mechanical advantage of Delrin® SC will provide the rigidity you need (which cannot be achieved with copolymer acetal).

The Delrin® SC full support package

The engineering teams here at Distrupol and at key supply partner, DuPont™, know the regulatory support and approvals that are imperative when working with polymers for medical applications. We understand the stringent product testing that is required before submitting to the market and the costs associated to do this.

We have a full regulatory support package in place to facilitate this process:

  • GMP manufactured – ensuring sterility and repeatability of batches manufactured
  • Controlled formulation with strict change control protocols
  • Food contact statements (EU/FDA)
  • Testing to sections of ISO 10993 5-11
  • Testing against parts of USP Class VI
  • Sterilisation data
  • Individual grade statements
Delrin Medical
Delrin sterilisation

Sterilisation techniques and suitability for Delrin® acetal and other DuPont™ engineering polymers

The sterility of polymer medical devices is absolutely critical in most medical applications to prevent any risk of infection or contamination. To ensure parts are cleaned and bioburden risks are minimised, sterilisation techniques are used to kill bacteria and other microorganisms. These techniques can have a detrimental effect on polymer materials; here at Distrupol, we can recommend the appropriate polymer to suit the required cleaning technique.

Delrin® in Action

Medical Tubing Clamps Medical Tubing Clamps Polymer medical tubes are used to transport a variety of fluids e.g. liquid drugs, parenteral fluid, water or blood. Sometimes the fluid flow needs to be stopped and to do this, a clamp and/ or clip is required to restrict the tubing and halt the flo... Read more
Patch Pump Components Patch Pump Components Patch pumps are a recent innovation which enable medicine to be automatically administered to a patient. The product consists of an electronically driven pump which is controlled by a handheld unit or third-party device (e.g. a mobile phone). Taking ... Read more
Stent Delivery Systems Stent Delivery Systems In the event of restricted blood flow in an artery, it is fairly common practice to fit stents. Stents are comprised of a wire mesh that collapses to a very small diameter when initially inserted. It can then be opened and expanded when the restricte... Read more
Dose Counting Inhalers Dose Counting Inhalers Inhalers are common for treatment of respiratory illnesses. They deliver steroids (e.g. prednisone) to treat inflammation and/or bronchodilator, to open up the airways. Modern asthma inhaler designs have adapted to include dose counting features. ... Read more
Auto-Injector Pens Auto-Injector Pens Auto-injector pens provide a fast, easy, reliable, safe and repeatable method of injecting medicine. Recent developments in traditionally designed injector pens have pushed design boundaries, with smaller and more compact devices being developed. It ... Read more
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