Patent ID: 8562544

Claim:
A pen type device for ultrasound guided fine needle aspiration cytology and biopsy comprising: a hollow body having a needle hole formed at the front end thereof, the body being hollow at the rear end; a sliding part slidably mounted inside the body; elastic members mounted around the sliding part and inside the body to provide elasticity to return the sliding part backward; a syringe having a cylinder mounted at the front end of the sliding part and a needle drawn out from or inserted into the needle hole by a back-and-forth movement of the sliding part; a rotating part disposed at a front end of the sliding part and inside the body to rotate the syringe when the sliding part moves back and forth; a head screw-coupled to the rear end of the sliding part and drawn out from the body to control a movement distance of the sliding part according to the length that the head is screw-coupled with the sliding part; and a negative pressure generating part mounted on the body to generate negative pressure to the syringe by pulling a piston of the syringe when a button located on the outer face of the body is pushed.