DUAL FLOW SORBENT CARTRIDGE
First Claim
1. A sorbent cartridge, comprising;
- at least one cartridge body having a first inlet port and a second inlet port in fluid communication with an outlet port, wherein the first inlet port defines a first flow path and the second inlet port defines a second flow path; and
the first flow path having at least one interior space or sorbent material in the cartridge body that is not in fluid communication with the second flow path wherein the sorbent cartridge is capable of removing at least one impurity or waste species from a fluid.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are systems and methods for the performance of kidney replacement therapy having or using a dialyzer, control components, a sorbent cartridge with at least two separate flow paths, and fluid reservoirs configured to be of a weight and size suitable to be worn or carried by an individual requiring treatment. The system for performing kidney replacement therapy has a controlled compliance dialysis circuit, where a control pump controls the bi-directional movement of fluid across a dialysis membrane. The dialysis circuit and an extracorporeal circuit for circulating blood are in fluid communication through the dialysis membrane. The flux of fluid moving between the extracorporeal circuit and the dialysis circuit is modified by the rate at which the control pump is operating such that a rate of ultrafiltration and convective clearance can be controlled. The system provides for the monitoring of an inlet and outlet conductivity of the sorbent cartridge to provide a facility to quantify or monitor the removal of urea by the sorbent cartridge.
37 Citations
75 Claims
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1. A sorbent cartridge, comprising;
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at least one cartridge body having a first inlet port and a second inlet port in fluid communication with an outlet port, wherein the first inlet port defines a first flow path and the second inlet port defines a second flow path; and the first flow path having at least one interior space or sorbent material in the cartridge body that is not in fluid communication with the second flow path wherein the sorbent cartridge is capable of removing at least one impurity or waste species from a fluid. - View Dependent Claims (2, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 19, 27, 29, 31, 33, 35, 36, 39)
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3. (canceled)
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9. (canceled)
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16. (canceled)
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18. (canceled)
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20-26. -26. (canceled)
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28. (canceled)
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30. (canceled)
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32. (canceled)
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34. (canceled)
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37-38. -38. (canceled)
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40. A method, comprising;
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measuring the conductivity of the fluid prior to entering a sorbent cartridge; dividing the fluid between a first inlet port and a second inlet port of the sorbent cartridge based upon the conductivity of the fluid; removing one or more waste species from a fluid and adjusting the sodium ion concentration of the fluid; and recovering the fluid from an outlet port of the sorbent cartridge wherein the sorbent cartridge has a first flow path connected to the first inlet port including a urease material and a second flow path connected to the second inlet port including a mixed bed anion and cation exchange material.
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41-47. -47. (canceled)
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48. A system for performing kidney replacement treatment, comprising:
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a hemodialysis system having a controlled compliance dialysis circuit, a dialyzer with a high permeability dialysis membrane, a blood inlet end for receiving blood, a blood outlet end for allowing blood out of the dialyzer, a dialysate inlet end for receiving dialysate and a dialysate outlet end for allowing dialysate out of the dialyzer, wherein the blood and the dialysate contact different sides of the dialysis membrane; an extracorporeal circuit having a conduit for receiving blood from a subject and a conduit for returning blood to the subject and a blood pump for conveying blood from the subject, to the dialyzer and back to the subject; and a dialysis circuit having a sorbent cartridge for removing impurities and waste species from the dialysate, one or more conduits for conveying dialysate between the sorbent cartridge and the dialyzer, and a dialysate pump for conveying dialysate from the sorbent cartridge, to the dialyzer and back to the sorbent cartridge, the sorbent cartridge having a dialysate inlet end and a dialysate outlet end; wherein the sorbent cartridge comprises; at least one cartridge body having a first inlet port and a second inlet port in fluid communication with an outlet port, wherein the first inlet port defines a first flow path and the second inlet port defines a second flow path; and the first flow path having at least one interior space or sorbent material in the cartridge body that is not in fluid communication with the second flow path wherein the sorbent cartridge is capable of removing at least one impurity or waste species from a fluid.
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49-73. -73. (canceled)
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74. Use of a sorbent cartridge containing a sorbent, for removing at least one impurity or waste species from an external fluid, the sorbent cartridge having at least one cartridge body having a first inlet port and a second inlet port in fluid communication with an outlet port, wherein the first inlet port defines a first flow path and the second inlet port defines a second flow path, the first flow path having at least one interior space or sorbent material in the cartridge body that is not in fluid communication with the second flow path.
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75-77. -77. (canceled)
Specification