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The Advantages of DC Coreless Motors vs. DC Iron Core in Thrombolysis Treatment Devices

May 25, 2023

In mechanical thrombectomy systems, DC motors enable thrombus or blood clot removal via the treatment device. For DC motors, there are two technologies to review when selecting a motor for the device: Iron Core and Coreless. Let’s review why DC Coreless motors are a superior selection for this application.

DC Coreless motors, as the name suggests, have no iron core at the center of the motor. This creates a low rotor inertia, which allows rapid response times when the motor is powered. The coreless design enables the motor to reach high speeds quickly and to adapt to speed changes with minimal time delay. During a medical procedure, the precise control and dynamic response of the motor allows the doctor to adjust to the variable conditions of the thrombus removal. Additionally, the coreless rotor provides smooth torque characteristics and maintains the required output during the entire procedure.

When a motor rotates, losses occur that reduce the efficiency of the motor. For example, iron losses will impact motor efficiency - a particular drawback for Iron core technology. Since the DC coreless design operates with lower overall losses, a higher efficiency can be obtained. Increased motor efficiency requires less input power to the device to achieve the equivalent output.

A DC Coreless motor integrated into a mechanical thrombectomy device will optimize the device performance and deliver a more effective procedure for the surgeon and patient. Portescap’s DC Coreless motors, such as the 22DCT and 24DCT, are ideal solutions for this application. Contact Portescap to discuss the customization options for our DC Coreless motors to make your next product development successful.