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US 2018/0001011 A1Published application
Sensing and storage system for fluid balance
AssigneeMedtronic, Inc.
InventorsThomas E. Meyer, William P. Hajko, Thomas P. Hartranft
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Abstract
A sensing and storage system for fluid balance during dialysis is provided. The sensing and storage system has flow sensors on either side of a dialyzer in a controlled volume dialysate flow path. The sensors are positioned so that no fluid can be added to or removed from the dialysate flow path between the sensors except for that which is added or removed by action of a control pump. The sensing and storage system can have a fluid removal line for the removal of fluid from the dialysate flow loop.
Claims20
A sensing and storage system for fluid balance during dialysis, comprising;
- a control pump in a dialysate flow loop in fluid communication with a dialyzer, wherein the dialysate flow loop has a controlled volume;
- a fluid removal line fluidly connected to the dialysate flow loop and in communication with the control pump;
- an extracorporeal flow loop in fluid communication with the dialysate flow loop across a semi-permeable membrane in the dialyzer;
- an inflow sensor in the dialysate flow loop and positioned in the dialysate flow loop at a position before the dialyzer;
- an outflow sensor in the dialysate flow loop and positioned in the dialysate flow loop at a position after the dialyzer;
- and
- a control system receiving data from the inflow sensor and the outflow sensor;
- wherein said control system is in electronic communication with the control pump, wherein the control system utilizes a fluid balancing system that automatically adjusts a pump rate of the control pump based on a difference between the flow measured at inflow sensor and outflow sensor to maintain a controlled volume in the dialysate flow loop.
5 more elements
Dependencies are inferred from the claim text.