An endoscopic suction device (10) of an endoscope for mucosectomy is disc losed. The device (10) comprises a connecting base (12) having an open end ( 13). attachable to the distal end of the endoscope. The device further compr ises a distal tip (20) extending from the connecting base (12) and having a closed distal end. The distal tip comprises a suction chamber (23) formed th erein and in fluid communication with the open end. The suction chamber has a suction opening (24) formed laterally therethrough for suctioning lesions during mucosectomy.
