Patent ID: 6520931
Filing Date: 2003-02-18
Classification: A61B,A61M

Abstract:
A medical instrument comprising:a case forming a shape of a main body of the medical instrument and having a receiving space; a motor mounted in the case as a driving source, which is driven by a battery; a power transmission means for converting a rotational motion of the motor to a linear motion, wherein the power transmission means comprises an eccentric cam of which a rotation center is fixedly mounted on a rotation shaft of the motor, a bearing coupled to an eccentric shaft and integrally formed with the eccentric cam, and a power transmission member coupled outside the bearing for converting an eccentric rotational motion of the eccentric cam to a linear reciprocating motion; a pressure means connected to the power transmission means for inhaling and discharging ambient air so as to generate a suction force or discharging force of a predetermined pressure; a suction/discharge means integrally coupled with the pressure means and having an inlet for allowing an air to be inspired into the pressure means and an outlet for allowing the inspired air to be discharged from the pressure means to the outside; and a power switch mounted an external surface of the case for controlling operations of the motor; wherein either of a suction device or an injection device is detachably mounted to the medical instrument in communication with the inlet or outlet of the suction/discharge means.