Springs and Metal Solutions for next generation autoinjectors

RPK Medical Showcases Custom Spring and Metal Solutions for Next-Generation Autoinjectors in On Drug Delivery Magazine

The October 2025 edition of On Drug Delivery highlights RPK Medical’s engineering expertise in precision springs and stamped components, driving the evolution of safer, more innovative autoinjector systems.

12/10/2025

RPK Medical has been featured in the October 2025 issue of On Drug Delivery Magazine (Issue 178), dedicated to Prefilled Syringes & Injection Devices. The article, authored by Iker Ibisate, Álvaro García Nograro, and Irakusne Incierte, explores how precision metal engineering plays a central role in the design of next-generation autoinjectors and wearable delivery systems.

The feature highlights RPK Medical’s position as a strategic partner for drug delivery innovation, providing custom-made springs, stamped and formed components that ensure safety, reliability, and patient comfort in increasingly complex drug delivery systems.

RPK Medical in On DrugDelivery Magazine

Inside the Article: RPK Medical’s Approach to Emerging Challenges

As biologic therapies and self-administration continue to grow, autoinjectors face new mechanical and functional challenges. RPK Medical addresses these through tailored metal components engineered for performance, precision, and durability.

The article identifies five significant engineering challenges shaping the future of drug delivery and RPK Medical’s response to each:

  • Miniaturization: Achieving full functionality within ultra-compact designs through micro-springs, multifunctional stamped parts, and finite element optimization.
  • Delivery of Highly Viscous Drugs: Designing high-force and telescopic springs to ensure smooth, pain-free administration of concentrated biologics.
  • Flow Control: Guaranteeing stability and therapeutic accuracy with constant-force mechanisms and calibrated metal restrictors.
  • Reliable Skin Contact: Developing calibrated contact systems and safety mechanisms to ensure consistent performance across body types and use cases.
  • Connectivity & Digital Integration: Integrating conductive metal parts for EMI/ESD-safe communication in connected, smart autoinjectors.

Through co-engineering and rapid prototyping, RPK Medical bridges the gap between design concept and full-scale production, delivering solutions aligned with evolving regulatory, ergonomic, and digital requirements.

New Autinjectors Springs

About On Drug Delivery Magazine

On Drug Delivery is a leading global publication focusing on advances in drug delivery technologies and strategies. Each edition brings together experts from across the pharmaceutical and medical device industries to share insights, technical perspectives, and market trends. The magazine serves as a key reference point for innovation in the field of prefilled syringes, autoinjectors, inhalers, and other drug delivery platforms.

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