METHOD AND DEVICE FOR CONVEYING FLUIDS INTO THE TREATMENT UNIT OF A MEDICAL TREATMENT APPARATUS, IN PARTICULAR INTO THE DIALYZER OF A DIALYSIS APPARATUS
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
34 Claims
-
1-16. -16. (canceled)
-
17. A system for conveying fluid into the 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 a 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 into and/or out of the balancing chamber and a supply interruption system for interrupting the supply of fluid into the balancing chamber and/or discharge of fluid from the balancing chamber, a control unit for controlling the conveying system and the supply interruption system; and
,a bypass connecting the second discharge line to the second supply line, which is designed such that a fluid circuit including the treatment unit is created thereby completely or partially bypassing the balancing chamber. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A method for conveying fluid into a treatment unit of a medical treatment apparatus,
wherein, in a first work step of a first work cycle of successive work cycles, a balancing chamber is filled with fluid, fluid thereby being displaced out of the balancing chamber, while fluid circulates in a fluid circuit including the treatment unit completely bypassing the balancing chamber, in a second work step of the successive work cycles, fluid is fed from the balancing chamber to the fluid circuit including the treatment unit and fluid is carried away from the fluid circuit into the balancing chamber, while fluid is circulating in the fluid circuit.
Specification