Abstract: A massage device includes a main body provided with a supporting groove in which a calf of a leg can be disposed, a sliding member slidably inserted into the main body, and a first massager for massaging the calf. The first massager is installed on a rear side of the supporting groove and includes an electric motor, a power transmission device for converting a rotational motion of the motor into a reciprocal motion, and a first massage member for massaging the calf while moving along the supporting groove. The first massage member is fixed on the power transmission device.

Abstract: A medical instrument includes a case formed with a receiving space, a motor mounted in the case as a driving source which is driven by a battery, a power transmission element for converting a rotational motion of the motor to a linear motion, a pressure element connected to the power transmission element for inhaling and discharging ambient air so as to generate a suction force or discharging force of a predetermined pressure, a suction/discharge element integrally coupled with the pressure element and having an inlet for allowing an air to be inspired into the pressure element and an outlet for allowing the inspired air to be discharged from the pressure element to the outside, a power switch mounted an external surface of the case for controlling operations of the motor. Moreover, either of device or an injection device is detachably mounted to the main body of the medical instrument in communication with the inlet or the outlet of the suction/discharge element.

Abstract: A portable nasal, mucus removing device includes a case having an internal empty space for receiving parts, and a motor placed within the case and rotated by receipt of driving power from a battery. A power transmission unit is connected to the motor to convert the rotating movement of the motor into a reciprocating movement. A vacuum generator is connected to the power transmission unit to generate a vacuum pressure by introducing an external air or discharging the introduced air. A storage tank is connected to the case from the outside such that the storage tank can be separated from the case. The storage tank air-communicates with the vacuum generator via an air-introducing tube. An entrance tube is externally combined with the storage tank to introduce a nasal mucus. A guide tube is attached to an inner wall of the storage tank to guide the introduced nasal mucus into the storage tank.