Common Questions When Evaluating Motion Solutions for Infusion Devices

As an engineer tasked with developing an infusion device, you're plunged into a world of intricate design considerations. Among these, the motion solution stands out as a critical element, as it lies at the heart of infusion device design and dictates the device's ability to deliver medication accurately and reliably. From selecting the right motor technology to optimizing gearbox configurations and encoder placement, every decision plays a pivotal role in the device's functionality and performance, as they directly impact factors such as flow rate, operational lifespan, and noise levels. Let’s highlight a few critical considerations when selecting the right motion system components for your infusion device:

• Motor:
  • What motor technology is most suited for my design?
  • What is the power (voltage and current) allocation for the motion solution?
  • What speed range does the motor need to operate to match the expected device flow rate?
  • What is the duty cycle (on time / off time) for the motor and how does that impact the life expectation?
• Gearbox:
  • Should I use spur or planetary gear technology?
  • How does the gear ratio selection impact the required motor operational speed?
  • How does the gear ratio selection impact the ability to meet various flow rates?
  • What is the noise profile I need to achieve and how does the gearbox selection impact that?
• Encoder:
  • Where is the best location for the feedback system in the device?
  • How much resolution do I need for the feedback device?
  • How does the gear ratio selection impact the output resolution when the encoder is located on the rear of the motor?
  • Should I use magnetic or optical technology?

Choosing the right motion system elements is essential for achieving precise medication delivery and optimal performance. By addressing the questions outlined above, engineers can navigate this process with confidence and expertise. With over 40 years of experience in designing motion control solutions for infusion devices, Portescap stands as a trusted partner, ready to provide invaluable insights and solutions to propel your new design toward success. Reach out to us here to start collaborating!