Negative pressure suction device for pericardial effusion

The utility model discloses a negative pressure suction device for pericardial effusion. The needle tube comprises a needle tube body with a needle head at one end, a tube core body is further arranged in the needle tube body, a piston is arranged at one end of the tube core body and located in the needle tube body, and hollow guide wire channels are formed in the tube core body, the piston, the needle tube body and the needle head and used for allowing guide wires to sequentially pass through the tube core body, the piston, the needle tube body and the needle head. A vacuum body is further arranged at the end, close to the needle head, in the needle tube body and surrounds the wire guide channel, the needle head is arranged at one end of the vacuum body, a piston is arranged at the otherend of the vacuum body, and the interior of the vacuum body is in a vacuum state. The utility model has ingenious structural design and is convenient for medical personnel to operate. With the adoption of the device, the inju