| 摘要 |
This invention relates to endoscopic instrumentation apparatus and comprises a puncture cannula and a related hollow mandrel and optical system connectible to a coupling element of the puncture cannula; a hollow cylindrical intermediate element is also connectible to said coupling element of the puncture cannula and there are valved connectors fitted to the puncture cannula and the hollow mandrel, said valved connectors also being connectible to an automatic gas supply. The coupling element of the cannula is constituted by a hollow shaft which is installed for displacement against a spring towards a proximal end of the cannula; the hollow mandrel extends distally beyond an oblique face of the cannula and the intermediate element and the cannula are traversed by a connectible optical system which projects distally at least beyond the oblique face of the puncture cannula. The apparatus can be used for performing laparoscopy and culdoscopy operations or examinations.
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