Valve device for a medical fluid line system
AssigneeB. Braun Melsungen AG
InventorRALF KUNSCHAK
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Abstract
A valve device for a medical fluid line system includes a main body, the main body having a first fluid passage and a second fluid passage, each fluid passage extending between an inlet side and an outlet side of the main body. The main body has a first wall portion and a second wall portion which are each elastically displaceable, under the effect of fluid pressure, relative to a substantially dimensionally stable web portion of the main body. Each wall portion is arranged on the web portion, forming one of the fluid passages, in such a way that the first fluid passage is substantially uninfluenced by a fluid-pressure-induced deformation of the second wall portion, and the second fluid passage is substantially uninfluenced by a fluid-pressure-induced deformation of the first wall portion.
Claims14
A valve device for a medical fluid line system, the valve device comprising:
- a main body having an inlet side and an outlet side, the main body configured to be flexible at least in part;
- and
- a first fluid passage and a second fluid passage which each extend between the inlet side and the outlet side of the main body,
- wherein the main body is configured in such a way, and the first and second fluid passages are arranged in such a way that,
- in the event of a fluid overpressure between the inlet side and the outlet side, the first fluid passage is freed by a fluid-overpressure-induced elastic deformation of the main body, and the second fluid passage is sealed off in a fluid-tight manner, and,
- in the event of a fluid underpressure between the inlet side and the outlet side, the second fluid passage is freed by means of a fluid-underpressure-induced elastic deformation of the main body, and the first fluid passage is sealed off in a fluid-tight manner, and,
- in the event of a neutral fluid pressure between the inlet side and the outlet side, the first and second fluid passages are sealed off in a fluid-tight manner,
- wherein the main body has a first wall portion and a second wall portion which are each elastically displaceable, under the effect of a fluid pressure, relative to a substantially dimensionally stable web portion of the main body and are each arranged on the web portion, thereby each forming one of the first and second fluid passages, in such a way that the first fluid passage is substantially uninfluenced by a fluid-pressure-induced deformation of the second wall portion, and the second fluid passage is substantially uninfluenced by a fluid-pressure-induced deformation of the first wall portion.
Dependencies are inferred from the claim text.