PS118 is intended for continuous suction after operation for intestines, stomach, urinary bladder, or in the Dept. Of surgery, internal medicine, gynecology, and pediatrics. This modern low-pressure aspirator adopts an advanced technology that integrating circuit and sensor controlling with reliable performance and enables continuous constant-pressure drainage. It is an oil-free pump and does not require any maintenance. In a word, this low-pressure aspirator is a high-efficient and cost-effective medical device that would not cause any pain during the procedure.