Richard Wolf Gmbh

Achim Kolb

Ludwig Bonnet

Manfred Baier

Jurgen Hochberger

Klaus Muller

Christian Ell

Johannes Weissmuller

The hollow guide is designed as a thin ceramic hollow tube which is guided in an outer tube while leaving a hollow space between the outer tube and the ceramic hollow tube, the outer tube being provided at its proximal end with a connecting part having a gas connection and receiving a focusing optical system. The ceramic hollow tube is guided in the outer tube through at least one mounting part arranged at the proximal end and at least one mounting part at the distal end, which in each case is supported locally with respect to the inner wall of the outer tube. The mounting parts are thus arranged so that free flow cross-sections to conduct the rinsing gas remain in the region of support, these being matched with the internal inner cross-section of the ceramic hollow tube, so that gas flow flowing past the ceramic hollow tube is produced both on the outside and on the inside. The gas flow effects cooling of the ceramic hollow tube on the one hand and prevents impurities penetrating the distal end of the ceramic hollow tube on the other hand.

Device for rinsing a hollow guide for carbon dioxide lasers

In an endoscope designed for laser lithotripsy use is made of a laser lithotripsy unit having a guide tube insertable in the barrel of the endoscope, which guide tube encloses a laser light guide which carries at its distal end a fused-on head to concentrate the beam. The laser light guide is guided in the guide tube so as to be axially displaceable and immobilizable, thus making it possible for the distance between the head and the concretion intended for destruction to be adjusted to obtain optimum energy transmission, the relevant conditions being maintained during the operation by virtue of the fact that the distal end of the guide tube for the lithotripsy unit is held in contact with the concretion.

Endoscope for laser lithotripsy

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Bretten, Germany

Achim Kolb