Systems and methods for multifunctional volumetric fluid control
First Claim
Patent Images
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;
wherein the second pump is a water pump in fluid communication with a water source;
the at least first pump and at least second pump for selectively metering in and metering out fluid from the controlled compliant flow path;
at least one sensor measuring a sodium content of a fluid in the controlled compliant flow path;
a controller programmed to determine the sodium content of the fluid in the controlled compliant flow path and to control the second pump based at least in part on the sodium content of the fluid in the controlled compliant flow path;
the at least first pump and at least second pump operable in concert to control net fluid movement into and out of the controlled compliant flow path, wherein the at least first pump and at least second pump are coordinately operated by the controller applying an instantaneous rate of fluid removal to a control algorithm.
2 Assignments
0 Petitions
Accused Products
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.
321 Citations
23 Claims
-
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;
wherein the second pump is a water pump in fluid communication with a water source;the at least first pump and at least second pump for selectively metering in and metering out fluid from the controlled compliant flow path; at least one sensor measuring a sodium content of a fluid in the controlled compliant flow path; a controller programmed to determine the sodium content of the fluid in the controlled compliant flow path and to control the second pump based at least in part on the sodium content of the fluid in the controlled compliant flow path; the at least first pump and at least second pump operable in concert to control net fluid movement into and out of the controlled compliant flow path, wherein the at least first pump and at least second pump are coordinately operated by the controller applying an instantaneous rate of fluid removal to a control algorithm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification