(EN) The invention relates to a device (1) for determining the blood volume and/or blood volumetric flow of a circulation section, comprising a fluid storage unit (2) for storing a measuring fluid (3), an injection device for the injection of the measuring fluid into the circulatory system, at least one pump device (5) disposed between the fluid storage unit and the injection device, means for determining at least one property of the measuring fluid before injection into the circulatory system, further means for determining the respective properties in the circulatory system downstream of the injection site, and an analysis device for calculating the blood volume or volumetric flow as a function of the properties determined. The invention further relates to such a device having means for conditioning the measuring fluid. The invention provides that the measuring fluid can be supplied from the fluid storage unit to a second pump device (9) by means of a first pump device (5), and from the second pump device to the catheter. The invention further provides that the measuring fluid can be supplied to the catheter (11) at a first volumetric flow provided by the first pump device, said first volumetric flow able to be temporarily, in particular regularly, superimposed by a second volumetric flow provided by the second pump device, and/or that the means for conditioning the measuring fluid act upon at least one pump device. The invention also relates to a method for operating such devices.
(ZH) 本发明涉及一种确定循环部分的血液容积和/或血液容积流量的设备(1)，包括：存储测量流体(3)的流体存储单元(2)，将测量流体注入到循环系统中的注入装置，设置在流体存储单元(2)和注入装置之间的至少一个泵设备(5)，在注入到循环系统之前确定测量流体的至少一个特性的装置，确定注入点下游的循环系统中各特性的装置，和计算作为确定的特性的函数的血液容积或容积流量的分析设备。本发明还涉及这样的设备，其具有调节测量流体的装置。本发明使测量流体能利用第一泵设备(5)从流体存储单元供应到第二泵设备(9)，并从第二泵设备供应到导管。本发明还能使测量流体以由第一泵设备提供的第一容积流量被供应到导管(11)，第一容积流量能被第二泵设备提供的第二容积流量临时地、特别是规则地叠加，和/或调节测量流体的装置作用在至少一个泵设备上。本发明也涉及操作这些设备的方法。
