Valve device with elastically pretensioned closure element for a medical system

A valve device for a medical system, comprising:

• a valve housing,
• an inlet port arranged on the valve housing,
• an outlet port arranged on the valve housing,
• a flow duct extending through the valve housing connecting the inlet port and the outlet port to allow for a fluid flow through the valve housing between the inlet port and the outlet port, and
• a closure element arranged on the valve housing for selectively opening and closing the flow duct,
• wherein the housing comprises a first housing part and a second housing part, wherein the closure element comprises an elastic planar section which is held in a clamped fashion in between the first housing part and the second housing part,
• wherein the closure element is displaceable along a displacement direction relative to the valve housing between a closed position in which the flow duct is closed for preventing the fluid flow from the inlet port to the outlet port and an opened position in which the flow duct is opened for allowing the fluid flow from the inlet port to the outlet port, wherein the closure element is elastically pretensioned to move axially into the closed position by the elastic planar section,
• wherein the closure element comprises a head adjoining the planar section and extending through an opening of the first housing part so as to be configured to be accessible from an exterior of the housing,
• wherein the planar section extends, in the closed position, substantially perpendicularly to the displacement direction and is configured to cover the opening so as to prevent the fluid flow into the opening, wherein the closure element is actuatable to move the closure element from the closed position into the opened position by pulling on the head.