Method and device for conveying fluids into the treatment unit of a medical treatment apparatus, in particular into the dialyzer of a dialysis apparatus

摘要

The present invention relates to a device and method for conveying fluids into the treatment unit of a medical treatment apparatus. The device and method according to the present invention are based on the fact that the fluid with which the treatment unit is supplied, circulates in a fluid circuit including the treatment unit. To balance fresh and used fluid fed to the treatment unit or conveyed from the treatment unit, a balancing unit with a balancing chamber is used, which can be incorporated into the fluid circuit including the treatment unit. It is thus possible to supply the fluid circuit continuously with fresh fluid or to carry away used fluid continuously from the fluid circuit. The supply and discharge of fresh and used fluid can take place at a different flow rate from the flow rate at which the fluid circulates in the fluid circuit via the treatment unit.

主权项

1. A system for conveying fluid into a treatment unit of a medical treatment apparatus comprising:
a balancing unit which comprises at least one balancing chamber, a first supply line leading to the balancing chamber for supplying fluid from a fluid source into the balancing chamber and a first discharge line leading away from the balancing chamber for discharging fluid from the balancing chamber into a drain, a second discharge line leading away from the balancing chamber for discharging fluid from the balancing chamber into the treatment unit and a second supply line leading to the balancing chamber for supplying fluid from the treatment unit into the balancing chamber, a conveying system for conveying fluid at least one of into or out of the balancing chamber and a supply interruption system for interrupting at least one of the supply of fluid into the balancing chamber or discharge of fluid from the balancing chamber, a control unit configured to control the conveying system and the supply interruption system; and, a bypass line connecting the second discharge line to the second supply line, such that a fluid circuit including the treatment unit is formed which completely or partially bypasses the balancing chamber, wherein the conveying system comprises:
a first pump disposed in the first supply line;a second pump disposed in a first section of the second discharge line; anda third pump disposed in a second section of the second discharge line,wherein the bypass line extends between the first section and the second section of the second discharge line.