Endoscopic Biopsy Instrument

An endoscopic biopsy instrument for obtaining a tissue sample from the body of a patient. The endoscopic biopsy instrument includes a proximal portion (P) adapted to remain outside the patient's body during use and a proximal portion (P) adapted to be inserted into the patient during use The distal part (D). The endoscopic biopsy instrument further comprises a sleeve (9) and a motion transmission member (3). The distal end (3E) of the motion transmission member is adapted to be connected to a rotatable cutting tip (5), which is rotatable The cutting tip is extendable from the distal end of the sleeve and is configured to use rotational motion to obtain a tissue sample from the patient. The endoscopic biopsy instrument also includes a rotational motion element (1) for imparting rotational motion to the rotatable cutting tip , a linear motion element (1) for extending and retracting the cutting tip from the distal portion of the sleeve and a lockable adjustment device (6, 7, 9A) for use when the rotatable cutting tip passes through the linear Field adjusts and locks the maximum length the rotatable cutting tip extends from the distal portion of the sleeve when the motion element is extended and retracted.