Miniature Motors for Medical Devices

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Miniature Motors for Medical Devices
The SQL Series SQUIGGLE motor is a tiny, non-magnetic motor that is ideal for wearable and implantable medical devices. See the miniature OEM motors page for details and specifications.

The tiny ultrasonic motor allows wearable drug pumps, such as insulin pumps, to be made smaller and more comfortable than ever before. It also allows creation of smaller implantable pumps, so that less invasive procedures can be used to install the devices.
With fewer parts, the SQUIGGLE motor has fewer failure modes and greater reliability than electromagnetic motors.
At small sizes, the ultrasonic motor has lower power consumption than electromagnetic motors, for longer battery life.
The SQUIGGLE motor's high precision enables more precise dosing, so that smaller reservoirs and more concentrated drugs can be used.

A design concept using a SQUIGGLE motor for a wearable drug pump uses the motor's drive screw to directly push the syringe. The motor easily produces tiny steps, at speeds of micrometers per minute to micrometers per hour, for basal and bolus drug delivery. An optional magnetic rotary encoder measures each step with sub-micrometer accuracy for 0.01 unit dosage control.

The same motor moves at millimeters per second for reservoir replacement and priming.

Article from New Scale Technologies

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