TECHNIQUES FOR ADAPTIVE CONTROL OF MOTOR VELOCITY OF A SURGICAL STAPLING AND CUTTING INSTRUMENT
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Dec 11, 2024
filing date -
Dec 11, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
A surgical stapler is presented having a firing assembly, a motor, and a motor control circuit. The firing assembly is configured to translate along a longitudinal axis such that translation of the firing assembly in a distal direction is configured to deploy staples from an end effector during a firing stroke. The motor assembly includes a motor configured to drive the firing assembly along the longitudinal axis. The motor control circuit is configured to receive a firing signal indicating initiation of the firing stroke, drive the motor with a motor drive signal comprising a pulse width modulated (PWM) signal having a first constant duty cycle such that the firing assembly is translated through an initial distance, and increase a duty cycle of the PWM signal based at least in part on movement of the firing assembly through the initial distance.
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