Preserving sorbent devices in dialysis systems
Inventors
YUDS, DAVID • Bartels, Rachel • Fischer, Karsten
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12296079-B2
Publication Date
2025-05-13
Expiration Date
Abstract
A dialysis system includes a sorbent device positioned along a fluid circuit for regenerating dialysate during a dialysis treatment carried out at the dialysis system, a filter coupled to an outlet of the sorbent device such the any fluid flowing through the sorbent device must first flow through the filter before reentering the fluid circuit, and a pump positioned downstream of the filter along the fluid circuit. The pump is operable between first and second dialysis treatments carried out at the dialysis system to circulate a fluid through the sorbent device to prevent matter within the sorbent device from solidifying and circulate the fluid through the filter to remove contaminants from the fluid.
Core Innovation
The invention relates to a dialysis system for regenerating dialysate during a dialysis treatment, where a sorbent device is positioned along a fluid circuit for the regeneration. A filter is coupled to an outlet of the sorbent device such that any fluid flowing through the sorbent device must first flow through the filter before reentering the fluid circuit.
A pump is positioned downstream of the filter along the fluid circuit and is operable between first and second dialysis treatments to circulate a fluid through the sorbent device to prevent matter within the sorbent device from solidifying. During the inter-treatment preservation cycle, the pump also circulates the fluid through the filter to remove contaminants from the fluid.
The disclosure further provides a hardware module for bypass fluid handling, including a first bypass valve located along an inlet line of the sorbent device, a second bypass valve located along an outlet line of the sorbent device, and a bypass fluid line connecting the first and second bypass valves. The described architecture and control arrangement supports extending sorbent cartridge life by maintaining the sorbent device in a state that avoids solidification between dialysis treatments while trapping contaminants in the coupled filter.
Claims Coverage
The document includes one independent claim that defines the overall dialysis system architecture. The inventive features include a sorbent device in a regeneration fluid circuit, a downstream filter that all sorbent-device effluent must pass through, a downstream pump for inter-treatment operation that both prevents sorbent solidification and circulates through the filter, and a hardware module with bypass valves connected by a bypass fluid line.
Sorbent device positioned along a fluid circuit for regenerating dialysate
A sorbent device is positioned along a fluid circuit for regenerating dialysate during a dialysis treatment carried out at the dialysis system.
Filter coupled to the sorbent outlet with required downstream flow through the filter
A filter is coupled to an outlet of the sorbent device so that any fluid flowing through the sorbent device must first flow through the filter before reentering the fluid circuit.
Downstream pump operable between first and second dialysis treatments for preservation and contaminant removal
A pump positioned downstream of the filter along the fluid circuit is operable between first and second dialysis treatments, circulating a fluid through the sorbent device to prevent matter within the sorbent device from solidifying, and circulating the fluid through the filter to remove contaminants from the fluid.
Bypass valve hardware module with bypass fluid line
A hardware module includes a first bypass valve located along an inlet line of the sorbent device, a second bypass valve located along an outlet line of the sorbent device, and a bypass fluid line connecting the first and second bypass valves.
Overall claim coverage centers on a dialysis system that regenerates dialysate using a sorbent device, forces all sorbent effluent through a coupled filter, and uses a downstream pump during an inter-treatment period to prevent sorbent solidification while circulating fluid through the filter for contaminant removal, with bypass-valve hardware for the sorbent inlet and outlet.
Stated Advantages
Prolongs sorbent cartridge life by preventing solidification of matter within the sorbent device during an inter-treatment preservation cycle.
Removes contaminants from the fluid by circulating through the coupled filter.
Avoids cartridge replacement costs by extending cartridge use over multiple dialysis cycles.
Documented Applications
Dialysis system operation that regenerates dialysate during dialysis treatments, including an inter-treatment sorbent preservation cycle between first and second dialysis treatments.
Interested in licensing this patent?