Devices for medical procedures and related methods of use

A medical device, comprising:

• a handle having a thumbwheel that extends through an outer surface of the handle and a gear that extends from a body of the handle and through the outer surface of the handle;
• a shaft coupled to the handle, the shaft including a working channel;
• a sheath disposed through the working channel;
• a tool disposed through the sheath and movable relative to the sheath;
• a tool handle assembly mounted to the handle, the tool handle assembly having an actuator configured to move the tool relative to the sheath;
• and
• a pair of friction rollers positioned entirely outside the body of the handle and operatively coupled to the gear, wherein the pair of friction rollers is configured to be actuated by the thumbwheel, wherein the pair of friction rollers receive the sheath between one another, and wherein rotation of the thumbwheel causes the gear to rotate, thereby causing the pair of friction rollers to rotate and urge the sheath and the tool to move through the working channel.