FIELD: medical engineering. SUBSTANCE: sleeve has body with axial through hole, valve lock and adapter bushing with axial tool channel. Tube is coupled to body. Lock positioned in body. It overlaps axial hole. Adapter bushing is installed in body and may be detached. Lock is made as double-flap valve, and it has split connection with bushing. EFFECT: more effective construction. 2 cl, 2 dwg
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