Disclosed is a device for creating a seal which includes an upper seal member, a lower seal member, and a slider, wherein mating surfaces of the upper and lower seal members interlock. The food dispenser consists of a round body which contains a floor section which holds an ant food. Such a use may be, for example, defect management. A means of connecting electrochemical cells to a circuit board is also described wherein protruding parts of the cell, at the terminal end, are bonded to the circuit board. A leakage liquid outlet is formed at one side of the double bottom plate on which reinforcement ribs are arranged in a lattice state. Blood pressure in the proximal aorta may be measured to monitor the effects of the procedure.