Patent ID: 6540668
Filing Date: 2003-04-01
Classification: A61B,G02B

Abstract:
An endoscope arrangement comprising:an endoscope with a needle-shaped tube which has a hermetically sealed lens system at a distal end intended for insertion into a body; a field diaphragm provided at a proximal viewing end of the endoscope; a coupling device for connecting the endoscope to a video camera; said coupling device being attachable to a proximal viewing end of the endoscope; said endoscope having, at its proximal viewing end, a second hermetically sealed lens system which is arranged following said field diaphragm; said first hermetically sealed lens system at a distal end and said second hermetically are constructed so as to be non-adjustable and non-focusable; wherein said coupling device has no lenses and is adjustable with respect to its axial length in the manner of a telescope; wherein the coupling device has a sleeve-shaped shaft of a certain length whose distal end is designed to be fastened to the endoscope, and wherein a focusing sleeve is inserted in the shaft so as to be longitudinally displaceable, a fastening device for connection of the video camera or an eyepiece being provided at the proximal end of the focusing sleeve; said shaft being surrounded by an adjusting sleeve, there being formed in the inside wall of the adjusting sleeve a groove which is shaped like a thread and which has a relatively large pitch, and wherein the focusing sleeve has a pin which projects out radially at its distal end, in the shape of a pin-shaped screw, which projects into the groove of the adjusting sleeve through an axially extending slit provided in the shaft.