Abstract: A rotation structure of an electrosurgical pen includes a pen body and a cutting tip mounted to the pen body, an extendible/retractable smoke suction tube, and a rotation assembly mounted to an end of the pen body, and a conduit rotatably coupled to the rotation assembly. The pen body has an end on which a rotary joint part is formed. The rotation assembly includes inner and outer annular members that are rotatable with respect to each other. The rotation assembly is fit over and rotatably coupled to the rotary joint part. The conduit is fit over an outer circumference of the outer annular member. In a use of the electrosurgical pen, the rotation assembly allows the smoke suction tube and the conduit to rotate relative to each other so as to allow for free rotation of the electrosurgical pen to facilitate the operation of the electrosurgical pen.

Abstract: An improvement to dose inhaler comprises a cover lid, a channel lid, a water chamber, a power set and a bottom. Characterized in that the power set includes a housing, an oscillator and a circuit. The housing which is disposed with the circuit is installed at the bottom. An oscillator is electrically interconnected with the circuit. The water chamber is disposed above the oscillator and is used to contain water use to mix with medicine. One side of the water chamber is provided with a channel. A channel lid includes a retaining port and an air channel which has an inhaling port at one side. The retaining port is disposed right above the water chamber. A cup for medicine is disposed above the retaining port. One side of the medicine cup is provided with an inhaling port. Consequently, a passage is defined by the channels and is intercommunicated with the inhaling port.