Modular reservoir assembly for a hemodialysis and hemofiltration system
The present specification discloses a dialysis system having a reservoir module with a reservoir housing defining an internal space, a surface located within the internal space for supporting a container that contains dialysate, and a conductivity sensor located within the internal space, where the conductivity sensor has a coil, a capacitor in electrical communication with the coil, and an energy source in electrical communication with the circuit.
1. A reservoir module for use in a portable dialysis system comprising:
a reservoir housing having four sides, a base, and a top, wherein said four sides, base surface, and top surface define an internal space and wherein at least one side of the top surface comprises a fluid drain gutter with a wetness sensor;
a container adapted to contain dialysate;
a surface located within said internal space and configured to suspend said container, wherein said surface is integrated with a scale; and
a conductivity sensor located within said internal space, wherein said conductivity sensor comprises a coil having a plurality of turns, a capacitor in electrical communication with said coil, wherein said coil and capacitor define a circuit, and an energy source in electrical communication with said circuit.
2. The reservoir module of claim 1 wherein the energy source maintains a substantially constant voltage across said capacitor.
3. The reservoir module of claim 1 wherein said conductivity sensor outputs a value indicative of a sodium concentration in said dialysate based on an energy input required from said energy source to maintain the constant voltage across the capacitor.
4. The reservoir module of claim 1 wherein the coil has a radius between 2 and 6 inches.
5. The reservoir module of claim 4 wherein the coil generates a magnetic field.
6. The reservoir module of claim 1 wherein a heater is in thermal contact with said container.
7. The reservoir module of claim 6 wherein the heater is integrated into said surface.
8. The reservoir module of claim 1 wherein said surface comprises a plurality of flex points physically attached to said top.
9. The reservoir module of claim 1 wherein the container is an IV bag.
10. The reservoir module of claim 1 wherein a second side of the top surface comprises a second fluid drain gutter.
11. The reservoir module of claim 10 wherein the second fluid drain gutter is in fluid communication with a second wetness sensor.
12. The reservoir module of claim 1 wherein a door providing internal access to said reservoir housing is integrated into one of said four sides.
13. A module for use in an extracorporeal system comprising:
a housing having four sides, a base, and a top, wherein said four sides, base surface, and top surface define an internal space and wherein the top surface comprises a fluid drain gutter with a wetness sensor;
a container positioned within said internal space and adapted to contain a liquid;
a surface located within said internal space and configured to suspend said container, wherein said surface is integrated with a scale; and
a conductivity sensor located within said internal space.
14. The module of claim 13 wherein said conductivity sensor outputs a value indicative of an ion concentration in said liquid based on an energy input required from an energy source to maintain a constant voltage across a capacitor.
15. The module of claim 14 wherein said ion is a sodium ion.
16. The module of claim 13 wherein said conductivity sensor comprises a coil and the coil has a radius between 2 and 6 inches.
17. The module of claim 14 wherein the energy source is adapted to maintain a substantially constant voltage across said capacitor.
18. The module of claim 13 wherein the conductivity sensor further comprises an oscillator.