Dialysis apparatus with regulated mixing of the dialysis solution
First Claim
1. A dialysis apparatus with a unit for the production of a dialysis solution from a concentrate and water, the apparatus having a concentrate tank, a mixing unit, a pump for feeding concentrate from the concentrate tank into the mixing unit and a water connection connected to the mixing unit, the apparatus having a dialyzer for producing a treated liquid, said dialyzer being connected with said mixing unit, said dialyzer being equipped with two dialyzer chambers separated by a membrane, the first dialyzer chamber being adapted to be filled with blood, the apparatus further having pumps to route blood and untreated dialysis liquid through the dialyzer, and an ultrafiltration device to produced ultrafiltrate for withdrawal characterized in that:
- an evaluation unit is provided at least for observation of a comparison of a representation of electrolyte contents of untreated liquid and treated liquid directed through said dialyzer;
at least one first detector is provided which is connected to receive untreated liquid upstream of said dialyzer and which is connected with said evaluation unit, said first detector being operative for determining and conveying to said evaluation unit a representation of the electrolyte contents of untreated liquid upstream of said dialyzer; and
at least one second detector is provided which is connected to receive treated liquid downstream of said dialyzer and which is connected with said evaluation unit, said second detector being operative for determining and conveying to said evaluation unit a representation of the electrolyte contents of treated liquid downstream of said dialyzer.
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Accused Products
Abstract
A dialysis apparatus having a unit for the production of the dialysis solution and a dialyzer includes a first detector mounted upstream of the dialyzer and a second detector mounted downstream of the dialyzer by means of which the composition of the dialysis solution can be regulated. The measuring data of detectors are compared and eventually used to control the composition of the dialysis solution; the invention is particularly useful in high exchange capacity dialyzers, since the composition of the dialysis solution can be adjusted directly and at any time to maintain desired conditions in the dialyzed patient.
145 Citations
17 Claims
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1. A dialysis apparatus with a unit for the production of a dialysis solution from a concentrate and water, the apparatus having a concentrate tank, a mixing unit, a pump for feeding concentrate from the concentrate tank into the mixing unit and a water connection connected to the mixing unit, the apparatus having a dialyzer for producing a treated liquid, said dialyzer being connected with said mixing unit, said dialyzer being equipped with two dialyzer chambers separated by a membrane, the first dialyzer chamber being adapted to be filled with blood, the apparatus further having pumps to route blood and untreated dialysis liquid through the dialyzer, and an ultrafiltration device to produced ultrafiltrate for withdrawal characterized in that:
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an evaluation unit is provided at least for observation of a comparison of a representation of electrolyte contents of untreated liquid and treated liquid directed through said dialyzer; at least one first detector is provided which is connected to receive untreated liquid upstream of said dialyzer and which is connected with said evaluation unit, said first detector being operative for determining and conveying to said evaluation unit a representation of the electrolyte contents of untreated liquid upstream of said dialyzer; and at least one second detector is provided which is connected to receive treated liquid downstream of said dialyzer and which is connected with said evaluation unit, said second detector being operative for determining and conveying to said evaluation unit a representation of the electrolyte contents of treated liquid downstream of said dialyzer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A dialysis apparatus with a unit for the production of a dialysis solution from the concentrate and water, the apparatus having a concentrate tank, a mixing unit, a pump for feeding concentrate from the concentrate tank into the mixing unit, and a water connection connected to the mixing unit, the apparatus having a dialyzer for producing a treated liquid, said dialyzer being equipped with two dialyzer chambers separated by a membrane, the first dialyzer chamber being adapted to be filled with blood, the apparatus further having pumps to route blood and untreated dialysis liquid through the dialyzer, and an ultrafiltration device to produce ultrafiltrate for withdrawal, characterized in that:
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an evaluation unit is provided at least for observation of a comparison of a representation of electrolyte contents of untreated liquid directed into said dialyzer and treated liquid exiting from said dialyzer; and a detector is provided for determining electrolyte contents of liquids passing through said dialyzer, said detector being alternately connected to receive untreated liquid from upstream of said dialyzer and treated liqdid from downstream of said dialyzer, said detector being connected with said evaluation unit for conveying representations alternately of electrolyte contents of untreated liquid upstream of said dialyzer and of electrolyte contents of treated liquid downstream of said dialyzer. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification