Programm                 "Degeneration und Regeneration– Grundlagen, Diagnostik und Therapie"


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Abstract
Abstract

Development of a New Cannula for Interventions at the Lacrimal Ducts

Lachmund U.1, Remonda L.2, Roeren T.3
1Department of Diagnostic Radiology, Kantonsspital Bruderholz, Switzerland; 2Department of diagnostic Radiology, Dept. of Neuroradiology, Inselspital, University of Bern, Switzerland; 3Department of Diagnostic and Interventional Radiology, Kantonsspital Aarau, Switzerland

Purpose: Development of a new dacryocystoplasty cannula
Method: In dacryocystoplasty a soft guide wire is at present introduced by a small catheter of 24 G or over a sialography catheter Ch.5. These materials are soft and made of plastic, the insertion of the guide wire through the inferior puncta is hardly possible. Also neither catheter is manoeuvrable. We developed a new dacryoplasty cannula (Company HUCO VISION SA, 2072 Saint-Blaise, Schweiz) made by steel, sterilizable and 0.7 mm thick. protected by a mandrin, even in very thin canaliculi, this cannula can be advanced into the sacculus or the nose cavity. Without changing the position of the cannula, a roadmap is possible and by that a soft guide wire can carefully directed and be pushed forward through the cannula. With this cannula also a hard guide wire is better controllable. The new cannula can be combined with different mandrins: a long blunt mandrin to probe the nasolacrimal duct, a sharp cutting or a pointed one.
Results: Until now this new cannula was used in 15 patients. The first results are encouraging. The probing even in thin canaliculi is easy, to insert a


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