1. Medical connecting nozzle, comprising: a housing having an inlet, at least one outlet through a covered Luer section of the housing and a fluid flow channel between the inlet and the specified at least one outlet, a retractable rod passing through a fluid flow channel in the male Luer cone, sealing the tip of the male Luer cone, thereby closing the fluid channel when the connecting nozzle is not activated； pliers running along the outside of the male Luer cone and connected to the retractable rod； in which, when the connecting nozzle is activated, moving the teeth relative to the male Luer cone causes the retractable rod to be forced out of the tip of the male Luer cone, thereby opening the fluid flow channel through medical connection nozzle. 2. The medical connecting nozzle according to claim 1, wherein the rod is extruded from the tip of the male Luer cone by the force exerted on the teeth, which results from the contact of the teeth with the surface of the female Luer element into which the male Luer cone is inserted. The medical connecting nozzle according to claim 1, wherein the rod is extruded from the medical connecting nozzle by means of a force applied to the rod. The medical connecting nozzle according to claim 1, wherein the internal volume of the fluid of the medical connecting nozzle increases when the medical connecting nozzle is deactivated so that the fluid in the male cone Liu1. Медицинская соединительная насадка, содержащая:корпус, имеющий входное отверстие, по меньшей мере, одно выходное отверстие через охватываемый люэровский участок корпуса и канал потока текучей среды между входным отверстием и указанным, по меньшей мере, одним выходным отверстием；втягиваемый стержень, проходящий через канал потока текучей среды в охватываемом конусе Люэра, герметизируя кончик охватываемого конуса Люэра, тем самым, закрывая канал потока текучей среды, когда соединительная насадка не активирована； изубцы, проходящие вдоль наружной стороны охватываемого конус
