Abstract:
A system, method and apparatus for performing a renal replacement therapy is provided. In one embodiment, two small high flux dialyzers (20, 30) are connected in series. A restriction (40) is placed between the two dialyzers in the dialysate flow path (962). The restriction is variable and adjustable in one preferred embodiment. The restriction builds a positive pressure in the venous dialyzer, causing a high degree of intentional backfiltration. That backfiltration causes a significant flow of dialysate through the high flux venous membrane directly into the patient's blood. That backfiltered solution is subsequently ultrafiltered from the patient from the arterial dialyzer. The diffusion of dialysate into the venous filter and removal of dialysate from the arterial dialyzer causes a convective transport of toxins from the patient. Additionally, the dialysate that does not diffuse directly into the patient but instead flows across the membranes of both dialyzers provides a diffusive clearance of waste products.
Abstract:
A dialysis system (10, 100) comprising: a hardware unit (110) including a pump (20) operating with a pump head (214) and a heater (16); a disposable unit (160) including a pump receptacle (172) in fluid communication with a fluid heating member (180); the hardware unit (110) and the disposable unit (160) configured such that when mated for operation, the pump head (214) comes into operable alignment with the pump receptacle (172) and the heater (16) comes into operable alignment with the fluid heating member (180); and a controller (30) including at least one memory device (32) and at least one processor (34) configured and arranged to (i) cause the pump (20) to move the pump head (214) towards and away from the pump receptacle (172) for pumping dialysis fluid and (ii) cause the heater (16) to heat the dialysis fluid heating member (180) to a desired temperature based on a voltage input into the system.
Abstract:
A dialysis system (10, 100) comprising: a hardware unit (110) including a pump (20) operating with a pump head (214) and a heater (16); a disposable unit (160) including a pump receptacle (172) in fluid communication with a fluid heating member (180); the hardware unit (110) and the disposable unit (160) configured such that when mated for operation, the pump head (214) comes into operable alignment with the pump receptacle (172) and the heater (16) comes into operable alignment with the fluid heating member (180); and a controller (30) including at least one memory device (32) and at least one processor (34) configured and arranged to (i) cause the pump (20) to move the pump head (214) towards and away from the pump receptacle (172) for pumping dialysis fluid and (ii) cause the heater (16) to heat the dialysis fluid heating member (180) to a desired temperature based on a voltage input into the system.
Abstract:
La presente invención se refiere a un sistema de diálisis que comprende: un circuito extracorpóreo que incluye un dializador; un circuito de fluido de diálisis que incluye una primera cámara de equilibrio, una segunda cámara de equilibrio, una bomba de fluido de diálisis fresco en comunicación de fluido con el primer y segundo compartimientos frescos de la primera y segunda cámaras de equilibrio, respectivamente, el primer y segundo compartimientos frescos en comunicación de fluido con una entrada de fluido de dializado fresco del dializador, y una bomba de fluido de diálisis consumido en comunicación de fluido con el primer y segundo compartimientos consumidos de la primera y segunda cámaras de equilibrio, respectivamente, la bomba de fluido de diálisis consumido está también en comunicación de fluido con una salida de fluido de diálisis consumido del dializador; y en donde el sistema está configurado para ejecutar (a) una secuencia de imprimación que utiliza por lo menos una de las bombas de fluido de diálisis fresco y consumido y la primera y segunda cámaras de equilibrio para bombear fluido de diálisis (i) a través del circuito de fluido de diálisis y (ii) a través del dializador y hacia el circuito extracorpóreo, y (b) una secuencia de bolo en la cual el fluido de diálisis consumido del compartimiento consumido de la primera cámara de equilibrio se envía al compartimiento consumido de la segunda cámara de equilibrio para impulsar fluido de diálisis fresco hacia el dializador a través de la tubería de entrada de fluido de diálisis fresco sin que se impulse una cantidad correspondiente de fluido de diálisis consumido hacia un drenaje.