Abstract: A medical device may include a main shaft extending from a proximal end to a distal end; an actuator at a proximal portion of the medical device; an end effector positioned at a distal end of the main shaft and comprising a first jaw and a second jaw; a motor; and a torque amplification system. The torque amplification system may include a driveshaft coupled to the motor; a spring coupled to the driveshaft and configured to expand or contract in a proximal or a distal direction relative to the driveshaft; a hammer moveably coupled to the driveshaft; and an anvil coupled to the end effector and abutting the hammer. The anvil may be configured to provide a rotational power output to the end effector to move the first jaw and/or the second jaw.

Abstract: A motorized control system for a medical device may include a control assembly including a first body with a cradle assembly and a second body moveably coupled to the first body. The cradle assembly may be configured to removably couple to the medical device. The second body may include a gear assembly, a first motor configured to drive a first gear of the gear assembly, and a second motor configured to drive a second gear of the gear assembly. The control assembly may be configured to transition between an open configuration and a closed configuration. The gear assembly may be configured to receive a plurality of knobs of the medical device in the closed configuration. The first motor may be configured to drive the first gear to rotate a first knob. The second motor may be configured to drive the second gear to rotate a second knob.

Abstract: A method for removing one or more objects or materials from a body lumen includes delivering a tube and an expandable device to the body lumen to a position proximal to the one or more objects or materials. The expandable device is positioned with a lumen of the tube, and the expandable device includes a lumen extending from a distal portion to a proximal portion. The method further includes proximally retracting the tube such that the expandable device remains in the position proximal to the one or more objects or materials, distally advancing the expandable device such that the distal portion of the expandable device at least partially surrounds the one or more objects or materials, at least partially closing a distal end of the expandable device, and moving the expandable device proximally to remove the expandable device and the one or more objects or materials from the lumen.

Abstract: A medical device may include a main shaft extending from a proximal end to a distal end; an actuator at a proximal portion of the medical device; an end effector positioned at a distal end of the main shaft and comprising a first jaw and a second jaw; a motor; and a torque amplification system. The torque amplification system may include a driveshaft coupled to the motor; a spring coupled to the driveshaft and configured to expand or contract in a proximal or a distal direction relative to the driveshaft; a hammer moveably coupled to the driveshaft; and an anvil coupled to the end effector and abutting the hammer. The anvil may be configured to provide a rotational power output to the end effector to move the first jaw and/or the second jaw.

Abstract: A medical device comprising an end-effector, including a first feature and a second feature, wherein the first feature and the second feature are pivotably joined to one another, and a motor coupled to a rotatable shaft, wherein the rotatable shaft engages the end-effector, and wherein the motor is configured to rotate the rotatable shaft in a first direction and a second direction, wherein the second direction is opposite of the first direction, wherein a first rotation of the rotatable shaft in the first direction is configured pivot the first feature and the second feature towards one another, and wherein a second rotation of the rotatable shaft in the second direction is configured to pivot the first feature and the second feature away from one another.