DEVICE FOR APPLYING LIGHT ON THE WALL OF A VESSEL

摘要

The invention relates to a device (10) for applying light onto a point which is to be treated on the wall (51) of a vessel (50) in a human or animal body, particularly for laser welding two vessels together. Said device comprises a light guiding instrument (12), which guides the light generated by an extracorporal light source to a particular point and radiates thereon. The light guiding instrument (12) comprises a longitudinal fibre optic light guide (20) which can be introduced into the lumen of the vessel (50) and is displaceable in the longitudinal direction of the vessel (50), in additional to means for deflecting light (28), which steer the light guided via the fibre optic light guide (20) in an essentially radial manner to the point which is to be treated.