A 12V DC stepper motor integrating an 8mm micro motor, a 4-stage encoder and a 546:1 reduction ratio gearbox has been officially applied to the stapler actuator system. This technology, through ultra-high-precision transmission and intelligent control, significantly enhances the stability and safety of surgical anastomosis, setting a new industry benchmark for minimally invasive surgical operations.
This motor strikes a perfect balance between miniaturization and high torque. It is an 8mm ultra-miniature motor: featuring a coreless rotor design, it reduces the volume by 30% compared to the previous generation while ensuring 12V low-voltage drive, making it more suitable for the narrow operating space of endoscopic staplers. 4-level high-precision encoder: With a resolution of 0.09°, it can provide real-time feedback on the motor speed and position, ensuring that the error of each stitch distance during the suture process is controlled within ±0.1mm, avoiding the risk of tissue misalignment or bleeding. 546:1 Multi-stage gearbox: Through a 4-stage planetary gear reduction structure, the torque of the stepper motor is increased to 5.2N·m (rated load). Meanwhile, the gears are made of medical-grade stainless steel, reducing the wear rate by 60% and ensuring a lifespan of over 500,000 cycles.
After clinical trials, the transition from "mechanical suture" to "intelligent anastomosis" has been achieved. In animal experiments, the intelligent stapler equipped with this motor demonstrated significant advantages: Improved response speed: Thanks to the closed-loop control of the encoder, the motor start-stop time was shortened to 10ms, and the suture force could be adjusted instantly during the operation. The 546 reduction ratio design enables the motor to maintain efficient output at low speeds, reducing the power consumption of a single operation by 22%. It supports the CAN bus communication protocol and can be seamlessly integrated with the main control system of the surgical robot to achieve remote and precise operation.
This highly integrated drive solution is not only applicable to staplers, but can also be extended to high-frequency precision medical equipment such as endoscopes and injection pumps in the future. In the future, intelligent motors with high reduction ratios and low noise will become the focus of competition.
Post time: Jun-06-2025