Extracorporeal blood filtering machine and methods
Inventors
Epshteyn, Vitaliy Gennad'yevich • Sandoval, Steven Daniel • Berg, Kalley Francis • Ulrich, Franz Willems
Assignees
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Publication Number
US-12357734-B2
Publication Date
2025-07-15
Expiration Date
Abstract
An extracorporeal blood filtering machine can include a blood circuit, an effluent circuit, and a source fluid circuit and can be controlled by a controller. The extracorporeal blood filtering machine can also include access ports for connecting the source fluid circuit to the blood circuit, as well as blood sensors to detect possible issues with the extracorporeal blood filtering machine. The extracorporeal blood filtering machine can include density sensors and flow sensors that enable it to be more accurate and to operate while being transported. The extracorporeal blood filtering machine can further include a user interface and can display fluid inflow/outflow information. A medical fluid container can automatically empty after being filled. An apparatus for supporting a medical fluid container can include a hanger and an attachment member with the apparatus able to adjust to ensure the medical fluid container remains properly oriented directly under a medical fluid container scale.
Core Innovation
The invention relates to an extracorporeal blood filtering system that includes a blood circuit with a blood line, a filter, and a blood pump, where the filter removes waste from blood by providing the waste to an effluent line as effluent. The system further includes an effluent circuit with an effluent line and an effluent pump to pump effluent to an effluent receptacle, and a controller determines a quantity of effluent pumped based on a determined effluent density value and outputs a system control signal based on the quantity.
The invention also determines a quantity of source fluid pumped based on a determined source-fluid density value, and outputs a system control signal based on both the quantity of effluent and the quantity of source fluid. The disclosed system includes a source fluid circuit with a source fluid reservoir, a source fluid line, and a source fluid pump coupled to the blood circuit, enabling source fluid to be pumped into the blood circuit while density values are determined for effluent and source fluid.
The disclosure further supports quantified fluid handling using density-sensor arrangements and weighing, including effluent density determination and source-fluid density determination, and using effluent and source-fluid scales to measure effluent weight value and source fluid weight value. The disclosure further distinguishes priming fluid from standard operation by using a known priming-fluid density value together with measured weight values to determine pump rate and source-fluid density.
Claims Coverage
The partial content provides two independent claims, an apparatus/system claim and a method claim. Across these independent claims, the inventive coverage is centered on density-based determination of effluent quantity and outputting a system control signal, extended to source-fluid density and quantity determination in a method that operates all three circuits.
Density-based effluent quantity determination from effluent density value
An extracorporeal blood filtering system with a controller configured to determine a quantity of effluent pumped through the effluent line into the effluent receptacle based on a determined effluent density value, and to output a system control signal based on the quantity of effluent.
Effluent density and source fluid density quantity determination during operation
A method operating an extracorporeal blood filtering system in which effluent density value and source fluid density value are determined, a quantity of effluent pumped through the effluent line into the effluent receptacle is determined based on the effluent density value, a quantity of source fluid pumped through the source fluid line from the source fluid reservoir is determined based on the source fluid density value, and a system control signal is output based on the quantity of effluent and the quantity of source fluid.
The independent claim set grounds its inventive core in determining effluent quantity using an effluent density value and generating a system control signal, and in a method that further determines source-fluid density to calculate both effluent and source-fluid quantities for control signaling.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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