Abstract: A semiconductor memory device includes a third insulating pattern and a first insulating pattern on a substrate, the third insulating pattern and the first insulating pattern being spaced apart from each other in a first direction that is perpendicular to the substrate such that a bottom surface of the third insulating pattern and a top surface of the first insulating pattern face each other, a gate electrode between the bottom surface of the third insulating pattern and the top surface of the first insulating pattern, and including a first side extending between the bottom surface of the third insulating pattern and the top surface of the first insulating pattern, and a second insulating pattern that protrudes from the first side of the gate electrode by a second width in a second direction, the second direction being different from the first direction.

Abstract: The present invention relates to a canister, a suction apparatus and a tissue expansion apparatus comprising same, and provides, according to one aspect of the present invention, a suction apparatus comprising: a housing having an inlet and an outlet; a pump disposed in the housing and suctioning air flowing in via the inlet; a first flow line for connecting the inlet and an inflow port of the pump; a second flow line for connecting an outflow port of the pump and outside air; a control valve disposed in the housing and provided with a first port connected to the first flow line, and a second port connected to the second flow line; a battery disposed in the housing and supplying power to the pump; and a control unit for controlling the pump and the control valve.