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Maximized Life Reduces Waste for Drug Delivery Devices

June 6, 2024

When developing a drug delivery device, the lifespan requirement is defined based on a multitude of factors, with the motion system playing a significant role. The frequency of delivery is intricately tied to the therapy prescribed, sometimes required for the duration of the patient’s life. In such cases, device longevity becomes pivotal, as fewer device replacements translate to reduced waste generated from disposals. Maximizing the life of the motion system is key to achieving this goal. Here we cover four methods critical to maximizing this system’s longevity:

  • Working Point Determination. The selection of motor technology and gearing system is heavily influenced by the device's working point. Utilizing simulations aids in developing gear ratios, taking into account various inputs to project expected lifespans. This facilitates the customization of gear ratios, motor torque, and speed to optimize design efficiency.
  • Material Selection. Material choice significantly impacts the durability of the gearing system. Opting for robust materials ensures prolonged performance and longevity of the motion system, consequently extending the device's overall lifespan.
  • Lubrication Optimization. Proper selection of lubrication for the gearing system is essential. Optimal lubrication not only reduces friction but also ensures smooth operation throughout the device's life cycle, contributing to extended longevity.
  • Motor Technology Considerations. In cases where a DC coreless motor is employed, targeting speeds that minimize brush wear is crucial. By doing so, the life expectancy of the motion system is prolonged, thereby enhancing overall device longevity.

Extending the life of drug delivery devices ultimately serves to reduce global waste by minimizing the number of units required by patients over time. Contact Portescap today to explore how the motion system in your drug delivery device can be optimized to maximize longevity and minimize waste, aligning with both patient needs and environmental sustainability goals.