| 摘要 |
A multi-functional surgical tool for the treatment of nasolacrimal stenosis or obstruction combines two elongated conduits, one of which is terminated at a distal end by an inflatable balloon. The other conduit is used for either irrigating a tracer fluid in a vessel that has been enlarged by inflation of the balloon, or for suctioning blood or debris loosened by the introduction and inflation of the tool. The tool is particularly useful to perform dacryocystoplasty (DCP) and dacryocystorhinostomy (DCR). Retrieval of the tracer fluid in the nasal cavity provides confirmation the all obstructions have been penetrated without false passage of the catheter through the wall of the lacrimal network. The tool avoids repeated insertion and withdrawal of the balloon catheter alternated with injection of the tracer fluid by means of another instrument.
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