Pressure equalizing vessel for a hemodialysis concentrate
AssigneeFresenius AG
InventorsHans-Dietrich Polaschegg, Wendelin Backhaus, Joachim Manke, Walter Pieper, Hans Walter
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Abstract
This invention relates to a pressure equalizing vessel for a hemodialysis concentrate. To ensure the supply of concentrate at a constant pressure to the concentrate pump for preparing dialysis fluid, even in cases where a central concentrate supply system is used, the present invention suggests that a cylindrical upright vessel 1 whose lower portion is provided with a concentrate inlet and whose upper portion has arranged thereon a venting means 4 should have inserted thereinto a concentrate suction tube 7 which is equipped with at least one level sensor (FIG. 1).
Claims12
A pressure equalizing vessel for equalizing pressure of a hemodialysis concentrate supplied to concentrate pump means of a plurality of hemodialysis devices by a central concentrate supply system, the concentrate being subject to supply pressure variations from said supply system, the pressure equalizing vessel comprising a substantially cylindrical upright vessel (1) whose lower portion has a arranged thereon a concentrate inlet (3) provided with a valve (2) and whose upper portion is equipped with a venting means (4), said vessel including a conduit (5) arranged on the upper portion thereof for discharging concentrate to the concentrate pump means of the hemodialysis devices, wherein a concentrate suction tube (7) with at least on level sensor (6) responsive to variations in the level of concentrate within the vessel is arranged in said cylindrical vessel (1) and wherein said valve (2) disposed in the concentrate inlet (3) is actuated by a control means (9) in response to signals from said level sensor (6), wherein pressure of the concentrate is equalized by venting through said venting means (4) and maintaining a substantially constant level of the concentrate within the vessel by said valve (2) actuated by said control means (9) in response to signals from said level sensor (6).
Dependencies are inferred from the claim text.