Choosing the Right Micro Motor for Auto-Injector Devices

The delivery of drug therapy for long-term but intermittent dose regimens demands injection devices that are small, discreet, and dependable; this enables patients to incorporate these devices into their daily routines seamlessly. When administering these high-viscosity drugs or large-volume injections, motorized auto-injectors are often preferred over manual syringes due to the significant force required over these long injection periods.

How Are Micro Motors Used in Auto-Injectors?

Micro motors are integrated into the auto-injector's design to drive the injection mechanism, thereby playing a crucial role in powering the delivery of medication with precision, control, and reliability. They provide the necessary force and motion required to push the plunger of the syringe, facilitating the controlled release of medication into the patient's body.

Speed: The Key Micro Motion Criteria for Auto-Injectors

Speed significantly influences the choice of motor technology in designing these auto-injectors, and depending on the motor technology chosen, different injection speeds are possible.

Stepper motors are ideal for lower speed requirements, as they offer slower and more controlled delivery; this makes them an excellent choice for medications requiring longer injection times and deliveries over extended durations. Linear stepper technology is particularly well-suited for low-speed requirements, given that its direct linear travel optimizes mechanical layout, allowing designers to emphasize external design for patient comfort. Stepper motors also offer mechanical precision, enhancing accuracy during drug delivery. Conversely, DC coreless motors with gearboxes can achieve higher speeds, delivering the drug swiftly within shorter durations. This makes them well-suited for higher speed demands, as they can achieve speeds in the thousands of RPM. Gearing solutions also augment torque output, facilitating the administration of higher-viscosity drugs.

Portescap's 8mm and 10mm DC coreless motors serve as the ideal solution for this technology, while the 20DAM excels in can stack linear technology. These motors offer customizable mechanical configurations and motion engagement with the syringe, resulting in a streamlined system tailored for patient convenience.

Conclusion

Enhancing patient experience and compliance is at the heart of designing auto-injectors, and the right motor technology plays a pivotal role in achieving these goals. Explore the various options available for customizing motor mechanics and motion engagement by reaching out to us today! We look forward to using our expertise to help determine the optimum motion solution for your auto-injector design, ensuring efficiency, reliability, and patient comfort in drug delivery.