Fluid analysis module and fluid analyzer

#Reference is made to PCT/EP2018/068078 filed Jul. 4, 2018, designating the United States, which claims priority to German Application No. 10 2017 211 693.5 filed Jul. 7, 2017, which are incorporated herein by reference in their entirety

#The invention relates to a fluid analysis module which by use of a sensor detects fluids, in terms of the components thereof which in particular is for analysing biological liquids, preferably blood which has been taken as samples from a patient or which has to be analysed by way of an extracorporeal blood circulation system during a continuous measuring procedure.

#A generic fluid analysis module is disclosed in DE 10 2011 056 271 A1, which is substantially composed of three plate-shaped functional units which are connected together, which are a carrier plate, fluidic card and a sensor card. Storage chambers and a receiving volume are contained inside the carrier plate with a sensor liquid for cleaning the sensor surface being housed therein. The fluidic card, which is attached directly via the carrier plate, is fluidically connected to receiving volumes present inside the carrier plate. The fluidic card contains fluid channels in which valves and pumps are arranged. The fluids housed in the carrier plate and also a body fluid supplied via a specific inlet are able to be delivered along specifically predeterminable fluid channels. The sensor card which is provided with sensors, terminates the fluid channels contained in the fluidic card on one side in a fluid-tight manner and directly contacts the liquids guided inside the fluid channels. Remote from the fluid channels, the sensor card comprises sensor contacts which come into electrical contact with a measuring module with the fluid analysis module be coupled thereto in a releasable and fixed manner.

#The invention is described by way of example hereinafter without limitation of an exemplary embodiment with reference to the drawings, in which:

#FIG. 1 shows a schematic structure of a fluid analysis module configured according to the invention with the control and evaluation unit coupled thereto;

#FIG. 2 shows an illustration of a fluidic functional element configured to be a flow valve; and

#FIG. 1 shows a schematic structure of a fluid analysis module 1 which is mechanically coupled to a control and evaluation unit 3 via a mechanically releasable interface 2. The fluid analysis module 1 in combination with the control and evaluation unit 3 forms a fluid analyzer.

#The fluid module 1 shown in FIG. 1 is surrounded by a module housing 4 and thus constitutes a single unit which may be operated as a single unit. The fluid analysis module 1 is able to be functionally subdivided into a measuring carrier region 5 and a chamber region 6. The chamber region 6 has a chamber 7 in which two liquid reservoirs 8, 9 which are elastic bags, are incorporated. The bag-shaped liquid reservoirs 8, 9, with the exception of the fluid lines discharging into the measuring carrier region 5, are otherwise loosely mounted inside the chamber 7.

#The measuring carrier 5* has a fluid inlet port 10, via which a liquid to be analysed by at least one of a sensor and a fluid to be analysed by use of a sensor, for example blood, is able to be fed into the measuring carrier 5*. Inside the measuring carrier 5* is located at least one fluid sensor 12 which has at least one sensor surface 11 via which the fluid to be examined by the at least one fluid sensor is guided inside the fluid sensor 12.