FIELD: medicine.
SUBSTANCE: invention refers to medicine. A cannula is attached to an overcap to prevent the overcap turn about the cannula. The cap has a seal. The seal can be formed in the overcap or comprise a plate fixed between the cannula and overcap. The cannula and overcap can latch permanently together by tenoning so that the cannula and overcap cannot be separated without damaging the cannula or overcap. The cannula can be inserted into the seal slot to provide the fluid outflow from the eye cavity through the cannula. The cannula can contain a twisted portion for friction engagement of a drain canal.
EFFECT: invention can be used for introducing inside the eye cavity to facilitate the introduction and removal of the instrument during a surgical intervention.
11 cl, 14 dwg
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