Systems and methods for multifunctional volumetric fluid control
First Claim
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1. A system for performing any one of hemodialysis, hemodiafiltration, hemofiltration, comprising:
- a controlled compliant flow path comprising a dialyzer;
at least a first pump in fluid communication with the controlled compliant flow path;
a common reservoir in fluid communication with the first pump, wherein the common reservoir contains any one of a dialysate, a filtrate, a volume of a physiologically compatible priming solution, a volume of a physiologically compatible solution to provide a bolus of fluid to a subject receiving treatment, a volume of physiologically compatible solution to provide solution for return of blood from an extracorporeal flow path to a subject receiving treatment, a volume of solution returned to the common reservoir from an extracorporeal flow path when blood from a subject is introduced to the extracorporeal flow path, and combinations thereof;
the at least first pump for selectively metering in and/or metering out fluid from the controlled compliant flow path;
the at least first pump operable to control net fluid movement into and/or out of the controlled compliant flow path, wherein the at least first pump is operated by a controller applying an instantaneous rate of fluid removal to a control algorithm;
at least one conductivity sensor in the controlled compliant flow path;
the controller controlling a water pump, a salination pump, or combinations thereof, to control dialysate conductivity based on data received from the at least one conductivity sensor.
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Abstract
Systems and methods for controlling fluid movement and volumes of fluid between a subject and a controlled compliant flow path. The controlled compliant flow path has a means for selectively metering in and metering out fluid from the controlled compliant flow path. An extracorporeal flow path is in fluid communication with the controlled compliant flow path across a semi-permeable membrane where the extracorporeal flow path has a first terminal end and a second terminal end.
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Citations
18 Claims
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1. A system for performing any one of hemodialysis, hemodiafiltration, hemofiltration, comprising:
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a controlled compliant flow path comprising a dialyzer; at least a first pump in fluid communication with the controlled compliant flow path;
a common reservoir in fluid communication with the first pump, wherein the common reservoir contains any one of a dialysate, a filtrate, a volume of a physiologically compatible priming solution, a volume of a physiologically compatible solution to provide a bolus of fluid to a subject receiving treatment, a volume of physiologically compatible solution to provide solution for return of blood from an extracorporeal flow path to a subject receiving treatment, a volume of solution returned to the common reservoir from an extracorporeal flow path when blood from a subject is introduced to the extracorporeal flow path, and combinations thereof;the at least first pump for selectively metering in and/or metering out fluid from the controlled compliant flow path; the at least first pump operable to control net fluid movement into and/or out of the controlled compliant flow path, wherein the at least first pump is operated by a controller applying an instantaneous rate of fluid removal to a control algorithm; at least one conductivity sensor in the controlled compliant flow path; the controller controlling a water pump, a salination pump, or combinations thereof, to control dialysate conductivity based on data received from the at least one conductivity sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification