Abstract:
Hemofiltration systems and methods circulate blood from an individual through a hemofilter (34) to remove waste and to return blood and replacement fluid to the individual after removal of waste. The systems and methods maintain sterile extracorporeal processing conditions during and between therapy sessions. For example, the systems and methods include a waste discharge path in the extracorporeal circuit to convey waste fluid to a waste receiving unit. The waste discharge path (66) includes an air break (170). The air break prevents back flow of waste contaminants into the extracorporeal circuit from the waste receiving unit. As another example, the systems and methods include a replacement fluid path (68) in the extracorporeal circuit to convey replacement fluid from a source to the extracorporeal circuit. The replacement fluid path includes a sterilizing filter (178) to avoid contamination of the extracorporeal circuit.
Abstract:
System and methods balance fluid in a fluid processing procedure during which an outgoing fluid is removed from an individual and an ingoing fluid is supplied to the individual. The systems and methods supply a volume of the outgoing fluid and a volume of the ingoing fluid into a volumetric chamber. The systems and methods discharge a volume of the outgoing fluid and a volume of the ingoing fluid from the volumetric chamber. The systems and methods synchronizes the supply and discharge of fluid to affect a concurrent discharge of the outgoing and ingoing fluids from the volumetric chamber in volumetric balance with a concurrent supply of outgoing and ingoing fluids into the volumetric chamber. The volumetric chamber can include at least one chamber including an interior wall dividing the chamber into first and second compartments. The first and second compartments retain a volume of outgoing and ingoing fluids respectively.
Abstract:
System and methods balance fluid in a fluid processing procedure during which an outgoing fluid is removed from an individual and an ingoing fluid is supplied to the individual. The systems and methods supply a volume of the outgoing fluid and a volume of the ingoing fluid into a volumetric chamber. The systems and methods discharge a volume of the outgoing fluid and a volume of the ingoing fluid from the volumetric chamber. The systems and methods synchronizes the supply and discharge of fluid to affect a concurrent discharge of the outgoing and ingoing fluids from the volumetric chamber in volumetric balance with a concurrent supply of outgoing and ingoing fluids into the volumetric chamber. The volumetric chamber can include at least one chamber including an interior wall dividing the chamber into first and second compartments. The first and second compartments retain a volume of outgoing and ingoing fluids respectively.
Abstract:
A novel system and method for fluid management for accurate continuous venovenous hemofiltration (CWH) in extracorporeal membrane oxygenation (ECMO). The fluid management or CWH system is automated and configured for operation as a stand alone unit and can be easily integrated with an ECMO system. The fluid management system is capable of producing either perfect or negative fluid balance between ultrafiltrate removal and replacement fluid delivery. The fluid management system can achieve electrolyte replacement over a range of flow rates needed to care for patients ranging from neonates to adults. Finally, the novel fluid management system preserves patient safety, maintains sterility during operation, is easy to operate, and is compact enough to fit near a patient's bed.
Abstract:
A first flow path (78) is defined within a first panel that forms part of an extracorporeal fluid circuit (56). A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circulation. The first and second panels are oriented in a fluid processing cartridge (18) for mounting as an integrated unit on a fluid processing machine (16) and for removal as an integrated unit from the fluid processing machine.
Abstract:
A hemofiltration machine (16) at a local treatment site (14) is linked to a remote main data base server (256) by a local transmitting/receiving device (296). The machine acts as a satellite of the main data base server. The machine performs specified therapy tasks while monitoring basic safety functions and providing the person at the treatment location notice of safety alarm conditions for resolution. Otherwise, the machine transmits procedure data to the main data base server. The main data base server, remote from the machine, controls the processing and distribution of the data, including the flow of information and data to the person undergoing therapy.
Abstract:
Hemofiltration systems and methods circulate blood from an individual through a hemofilter (34) to remove waste and to return blood and replacement fluid to the individual after removal of waste. The systems and methods maintain sterile extracorporeal processing conditions during and between therapy sessions. For example, the systems and methods include a waste discharge path in the extracorporeal circuit to convey waste fluid to a waste receiving unit. The waste discharge path (66) includes an air break (170). The air break prevents back flow of waste contaminants into the extracorporeal circuit from the waste receiving unit. As another example, the systems and methods include a replacement fluid path (68) in the extracorporeal circuit to convey replacement fluid from a source to the extracorporeal circuit. The replacement fluid path includes a sterilizing filter (178) to avoid contamination of the extracorporeal circuit.
Abstract:
A novel system and method for fluid management for accurate continuous venovenous hemofiltration (CWH) in extracorporeal membrane oxygenation (ECMO). The fluid management or CWH system is automated and configured for operation as a stand alone unit and can be easily integrated with an ECMO system. The fluid management system is capable of producing either perfect or negative fluid balance between ultrafiltrate removal and replacement fluid delivery. The fluid management system can achieve electrolyte replacement over a range of flow rates needed to care for patients ranging from neonates to adults. Finally, the novel fluid management system preserves patient safety, maintains sterility during operation, is easy to operate, and is compact enough to fit near a patient's bed.
Abstract:
Fluid replacement systems and methods for use in association with a hemofilter (34) convey an individual's blood through an extracorporeal fluid circuit to the hemofilter to remove waste fluid. The systems and methods convey waste fluid from the hemofilter through a waste line (66). The systems and methods convey blood from the hemofilter through a blood return line (64) after removal of waste fluid. The systems and methods balance the removal of waste fluid with replacement fluid. The systems and methods can selectively operate in a bolus mode, to increase the volume of replacement fluid supplied to the individual. The systems and methods can also selectively operate in a rinse back mode, during which a volume of replacement fluid circulated into the blood return line, to thereby flush the blood return line.
Abstract:
During hemofiltration, blood is conveyed from an individual through a blood line into a hemofilter to remove waste fluid. Waste fluid is conveyed from the hemofilter through a waste removal line at a waste removal rate. Waste fluid pressure is sensed in the waste removal line. A controller adjusts the waste removal rate to maintain waste fluid pressure at a predetermined set value.