Method and apparatus for moving an endoscope along a canal-shaped cavity

摘要

PCT No. PCT/EP93/03570 Sec. 371 Date Jan. 3, 1995 Sec. 102(e) Date Jan. 3, 1995 PCT Filed Dec. 15, 1993 PCT Pub. No. WO94/13188 PCT Pub. Date Jun. 23, 1994An apparatus for moving an endoscope along a canal-shaped cavity includes an endoscope having a movable distal end for entry into the cavity and a stationary operating end which remains outside of the cavity. A first portion of the endoscope is contained in a turnout tube which has a turnout area for entry into the cavity, and which also has a fixed end which remains outside of the cavity. A second portion of the endoscope extends from the fixed end of the turnout tube to the operating end of the endoscope. A first drive assembly is operable to move the endoscope and the turnout tube in unison, and a second drive assembly is operable to move the endoscope independently of the turnout tube. A lubricant may be applied through the fixed end of the turnout tube to the portions of the endoscope which are disposed within the turnout tube. Portions of the turnout tube and endoscope are disposed in a bend so as to allow the operating end of the endoscope to remain stationary while at the same time allowing the distal end of the endoscope and the turnout area of the turnout tube to be advanced and/or retracted into and out of the cavity.