公开(公告)号：US20210379262A1

公开(公告)日：2021-12-09

申请号：US17309537

申请日：2021-06-03

申请人： CHF Solutions, Inc.

发明人： David Lerner ,  David Haskvitz ,  Franz Willems Ulrich

IPC分类号： A61M1/34

摘要： A blood filtration system may to couple to an infusion pump that is external to the blood filtration system. The blood filtration system may include a blood circuit, for instance a variable-volume blood circuit. An infusion port may be in communication with the blood circuit and may receive an infusion fluid pumped by the infusion pump. A filtration pump may extract a filtrate fluid from a filter. The filtrate fluid may include filtered plasma constituents. A fluid characteristic sensor may measure one or more of pressure or flow rate of the infusion fluid pumped by the infusion pump. A controller may monitor the fluid characteristic sensor to determine a change in the pressure or flow rate of the infusion fluid. The controller may modulate a speed of the variable-speed filtration pump based on the change in the pressure or flow rate of the infusion fluid.

公开(公告)号：US20210379264A1

公开(公告)日：2021-12-09

申请号：US17309535

申请日：2021-06-03

申请人： CHF Solutions, Inc.

发明人： David Lerner ,  David Haskvitz ,  Dori Jones

IPC分类号： A61M1/34

摘要： A blood filtration system can reduce the amount of plasma constituents (e.g., water and/or electrolytes) in the blood of the patient, and accordingly increase the hematocrit value of the patient. The blood filtration system (e.g., a controller, or the like) can determine a hematocrit value of a patient. The blood filtration system can determine a venous pressure of vasculature of a patient. The blood filtration system can compensate for pressure head in a component of a blood circuit (e.g., a withdrawal line of a catheter), for example to improve the accuracy of the venous pressure determination. The blood filtration system can determine one or more resistance characteristics of a blood circuit for the blood filtration system. The resistance characteristics can correspond to a resistance to a flow of blood through a component of the blood circuit.

公开(公告)号：US20220001088A1

公开(公告)日：2022-01-06

申请号：US17309536

申请日：2020-03-26

申请人： CHF Solutions, Inc.

发明人： David Lerner ,  David Haskvitz ,  Franz Willems Ulrich

IPC分类号： A61M1/34

摘要： A blood filtration system may to couple to an infusion pump that is external to the blood filtration system. The blood filtration system may include a blood circuit, for instance a variable-volume blood circuit. An infusion port may be in communication with the blood circuit and may receive an infusion fluid pumped by the infusion pump. A filtration pump may extract a filtrate fluid from a filter. The filtrate fluid may include filtered plasma constituents. A fluid characteristic sensor may measure one or more of pressure or flow rate of the infusion fluid pumped by the infusion pump. A controller may monitor the fluid characteristic sensor to determine a change in the pressure or flow rate of the infusion fluid. The controller may modulate a speed of the variable-speed filtration pump based on the change in the pressure or flow rate of the infusion fluid.