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;
at least a second pump in fluid communication with the controlled compliant flow path and either a fluid source or a reservoir;
the first and second pumps for selectively metering in and metering out fluid from the controlled compliant flow path; and
the first pump and second pump operable in concert to control net fluid movement into and out of the controlled compliant flow path.
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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.
7 Citations
20 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; at least a second pump in fluid communication with the controlled compliant flow path and either a fluid source or a reservoir; the first and second pumps for selectively metering in and metering out fluid from the controlled compliant flow path; and the first pump and second pump operable in concert to control net fluid movement into and out of the controlled compliant flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification