摘要:
A dialysis machine having: a dialyzer (D); a water input system, which is connected to the dialyzer and an external water supply system, for supplying the dialyzer (D) with fresh dialysis fluid; and a line (32), which is connected to the dialyzer (D), for used dialysis fluid, wherein the water input system has a container (20) for water or another fluid, in particular for RO water, and wherein the dialysis machine also has a heat exchanger (40) which is connected both to the line (32) for used dialysis fluid and to the water input system so that heat from the used dialysis fluid is transferred to the fluid situated in the water input system, wherein the container (20) has a device for physically separating the external water supply system and the downstream portions of the water input system, preferably a free-fall section for incoming fluid from the water supply system, and wherein the heat exchanger is situated downstream of the container.
摘要:
A dialysis system is disclosed. An example dialysis system Includes a heat disinfected diaiysate fluid path. The example dialysis system also includes a disposable blood fluid path. The example dialysis system also includes an active carbon filter to purify influent water to purified water for dialysis or as a substitution fluid. An example method for dialysis includes providing a heal disinfected diaiysate fluid path, providing a disposable blood fluid path, and purifying influent water via an active carbon filter to for dialysis or as a substitution fluid.
摘要:
Offenbart wird ein Verfahren und eine Vorrichtung zur Steuerung oder Regelung einer Ultrafiltration bei einer Dialysebehandlung bei der zu ultrafiltrierendes Blut in einem extrakorporalen Blutkreislauf (109) eine Blutkammer (110) eines durch eine semipermeable Membran (111) in die Blutkammer (110) und eine Dialysierflüssigkeitskammer (108) unterteilten Dialysators (113) durchströmt und Dialysierflüssigkeit in einem Dialysierflüssigkeitskreislauf (109) die Dialysierflüssigkeitskammer (108) des Dialysators (113) durchströmt. Die Vorrichtung weist eine Blutpumpe (115) zur Erzeugung eines Blutflusses in dem extrakorporalen Blutkreislauf (112), eine Dialysierflüssigkeitspumpe (107) zur Erzeugung eines Dialysierflüssigkeitsflusses in dem Dialysierflüssigkeitskreislauf (109), eine Bilanziervorrichtung (104) zum Aufstellen einer Flüssigkeitsbilanz im Dialysierflüssigkeitskreislauf zwischen einem Zustrom (106) und einem Abfluss (105) der Dialysierflüssigkeitskammer (113) als Maß für die Ultrafiltration, sowie eine Regeleinheit (101) zum Regeln der Blutpumpe (115) und/oder der Diaylsierflüssigkeitspumpe (107) auf. Die Regelung erfolgt so, dass eine vorbestimmte Ultrafiltration ohne weitere aktive Steuerung oder Regelung des aus dem Dialysator (113) abfließenden oder in den Dialysator (113) zufließenden Dialysierflüssigkeitsfluss erzielt wird.
摘要:
The invention relates to a dialysis machine having improved flow balance. In particular, the invention monitors the pressure of blood entering and leaving a patient's body using several sensors (37, 39) and adapts the pressure of a dialysate solution feed to the dialysis machine to compensate for compliances in the fluid flow path. As a consequence, better flow balance is maintained throughout dialysis treatment leading to a more uniform removal of waste materials form the blood.
摘要:
L'invention concerne une machine de dialyse comprenant un dialyseur (1 ), un système d'amenée de dialysat (5) comprenant une ligne d'amenée (52) et un système d'évacuation (6) comprenant une ligne d'évacuation (62). La machine comprend des moyens de commande d'ultrafiltration (UF) et de rétrofiltration (RF). La ligne d'amenée comporte une restriction (520) et des moyens de mesure de la différence de pression (523, 524) aux bornes de ladite restriction. Ledit système d'amenée comprend aussi une poche ventricule (50), et des moyens de mise sous pression (70) de ladite poche ventricule (50). Ladite machine comprend un système (C5, C5') d'ouverture/fermeture de la ligne (62) d'évacuation et lesdits moyens de commande de rétrofiltration commandent la fermeture de la ligne (62) d'évacuation, et la pression appliquée à ladite poche ventricule (50), en fonction de la différence de pression mesurée aux bornes de la restriction (520), pour obtenir un débit de dialysat donné.
摘要:
Hemodialysis dialysis systems comprising a dialysis unit and user interface unit adapted to display safety critical information related to a dialysis process are disclosed. Hemodialysis systems of the invention may include a dialysate flow path including a balancing circuit, a mixing circuit, and/or a directing circuit. The circuits may be defined within one or more cassettes. The fluid circuits may be at least partially isolated, spatially and/or thermally, from electrical components of the system. A gas supply may be provided in fluid communication with the dialysate flow path and/or the dialyzer to urge dialysate through the dialyzer and blood back to the patient. The hemodialysis systems may include fluid handling device (s), actuated using a control fluid, optionally delivered using a detachable pump. Fluid handling devices may be generally rigid and of a spheroid shape, optionally with a diaphragm dividing the device into compartments.
摘要:
A dialysis system includes a dialysis machine with a variable fluid demand including at least a lower demand and a higher demand. A fluid source is in fluid communication with the dialysis machine and provides fluid to the dialysis machine at a fluid flow rate. A flow regulation device includes a fluid inlet in fluid communication with the fluid source and a fluid outlet in fluid communication with the dialysis machine. The flow regulation device is operable to expand and contract to provide a variable internal volume. The flow regulation device expands when the dialysis machine has the lower demand and contracts when the dialysis machine has the higher demand.
摘要:
Systems and methods for improving medical fluid delivery systems, such as hemofiltration ("HF") and hemodiafiltration ("HDF") are provided. In first embodiments, systems and methods for selectively performing pre-and postdilution HF and HDF clearance modes is provided. In other embodiments, systems and methods for providing prime bolus and rinseback fluid volumes before, during and/or after HF and HDF therapies are provided. In further embodiments, improved systems and methods for removing ultrafiltrate from the patient are provided. Still further, improved filtration configurations and methods are provided.
摘要:
A system, method and apparatus for performing a renal replacement therapy is provided. In one embodiment, two small high flux dialyzers are connected in series. A restriction is placed between the two dialyzers in the dialysate flow path. 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.