Medical device

The present invention provides a medical device including an outer tube, an operation unit and a control portion. The operation unit is at least partially located in the outer tube. The control portion has a channel communicated with the outer tube along the first direction; the second end of the control portion is coupled with the first end of the outer tube, so that the channel and the outer tube are communicated with each other along the first direction. The control portion includes a control module including a suction control unit, a suction, a suction valve actuator and a switching unit. The suction control unit has a stopping unit and configured to move along a second direction which is different form the first direction. The suction valve actuator and the suction control unit locate opposite sides with the channel therebetween and the suction valve actuator is configured to be activated by the suction control unit. The switching unit is configured to switch over the work status of the operation unit.