Medical device

Abstract

The invention relates to a medical device (1), preferably a dialysis apparatus for performing hemodialysis and / or hemofiltration and / or hemodiafiltration, comprising a first functional module (CPU1) and a second functional module (CPU2), wherein a chronograph (2) for counting an operating time is provided in the first functional module (CPU1) and the first functional module (CPU1) is configured to store an operating time value determined by the chronograph (2) in a first memory (M1) of the first functional module (CPU1), wherein a second memory (M2) is provided in the second functional module (CPU2), wherein the second functional module (CPU2) is configured to store the operating time value determined by the chronograph (2) of the first functional module (CPU1) in the second memory (M2).

Description

Technical Field

[0001] The present invention relates to a medical device for treating a patient, preferably a dialysis device, by which hemodialysis, hemofiltration, or hemodiafiltration can be performed. Background Technology

[0002] In medical devices, it is crucial to ensure the integrity and safety of the device at all times during operation. To this end, safety measures are incorporated within the medical device, which self-monitors during treatment. In this way, fail-safety is also provided, and corresponding measurements can be taken in the event of a malfunction, such as outputting error messages, triggering alarms, and / or stopping or terminating treatment to ensure patient safety at any time.

[0003] For example, redundant control mechanisms are provided in medical devices such as dialysis machines, including, for instance, a main control module that controls the dialysis machine during operation and treatment. Additionally, a protection module is provided that operates independently of the main control module and monitors the main control module. The protection module may be provided, for example, as a second module, constructed or designed to be substantially identical to the main control module, and capable of intervening in the event of failure of the main control module, thus bringing the medical device to a safe state. Besides the aforementioned main control module and protection module, additional functional modules may be provided in the medical device, also operating independently of the main control module, and may be provided, for example, as a display module or monitoring module. Individual functional components and functional subgroups of the medical device may also operate in conjunction with functional modules that function independently of the main control module. Different functional modules typically communicate with each other via a bus and / or defined interfaces.

[0004] In addition to monitoring the function of the medical device during operation prior to, during, and after patient treatment, as well as during routine testing and maintenance sequences, an operation time counter also serves as another device and / or safety mechanism for the medical device. Using this operation time counter, the total operation time of the medical device or the operation time of individual components can be determined. Therefore, maintenance of specific components or the entire medical device can be performed after the predetermined operation time has elapsed to further ensure the safe functioning of the medical device.

[0005] After the predetermined operating time of an individual component has expired, it may be necessary to replace the corresponding component. Recording and displaying the expired operating time can provide a motivation for maintenance or allow for the initiation of component replacement. Recording the operating time is superior to simply displaying, for example, the production date or expiration date, because this allows for the determination of the actual use of the medical device and the determination of maintenance or replacement needs based on the corresponding wear and tear caused by operation. However, the maintenance or replacement needs are not necessarily determined based on a fixed predetermined date, which may lead to situations where the maintenance need decision-maker retrieves the need too early, making the wear and tear of the component inconsistent with the actual use of the medical device and thus maintenance uneconomical, or where the maintenance need is retrieved too late, potentially compromising the safety of the medical device due to excessive use, as too much information about the component has already been obtained. Therefore, for both economic and operational safety reasons, it is preferable to record the actual operating time.

[0006] Operation time can be counted using a mechanical counter in a medical device, although mechanical operation time counters are associated with additional costs and are subject to wear and tear as mechanical components, thus limiting operational safety.

[0007] Furthermore, it is known that operation time counters are implemented electronically in the main control module or main printed circuit board of a medical device. Therefore, the microcontroller uses the processor frequency to count the operation time and stores the determined operation time value in a non-transitory storage medium within the main control module. However, in the event of a failure in the non-transitory storage medium or the main control module, or in the event of replacement of the main control module or main printed circuit board, the operation time counter becomes invalid and must be reset by service personnel in a cumbersome manner.

[0008] In another implementation, such as that proposed in dialysis devices 5008 / 6008 of this application, some of the functional modules, particularly the main control module, protection module, and monitoring module, are each equipped with a separate operating time counter, which counts the operating time of the respective functional module based on the processor frequency of the processor of the respective functional module. After the machine is turned on, when the deviation between the values ​​is less than one hour, the operating time counters of the functional modules are compared and synchronized with each other. However, when the deviation is large, a fault message is output. In this case, the following problem also occurs: by default, a fault message is output when a module is replaced because the operating time counter of the newly inserted module inevitably deviates from the values ​​of the operating time counters of the remaining modules. Therefore, after a module is replaced, the service personnel must also perform a tedious comparison of the operating time counters. Summary of the Invention

[0009] Based on known prior art, the object of the present invention is to provide a medical device that provides a robust operating time counter, which simplifies the maintenance of the medical device.

[0010] The objective is achieved by a medical device having the features of claim 1. Preferred embodiments are provided in the dependent claims, this specification, and the accompanying drawings.

[0011] Therefore, a medical device is proposed, preferably a dialysis device for performing hemodialysis and / or hemofiltration and / or hemodiafiltration, comprising a first functional module and a second functional module, wherein the first functional module provides an operation time counter for counting operation time, and wherein the first functional module is configured to store the operation time value determined by the operation time counter in a first storage device of the first functional module, and wherein a second storage device is provided in the second functional module. According to the invention, the second functional module is configured to store the operation time value determined by the operation time counter of the first functional module in the second storage device.

[0012] Because a second storage device is provided in the second functional module, configured to store the operation time value determined by the operation time counter of the first functional module, the operation time value determined by the operation time counter is recorded in at least two different storage devices in the two different functional modules. This redundant storage of the operation time value determined by the operation time counter results in a robust operation time counter, ensuring that the initially determined operation time value in the medical device is retained in the medical device even during maintenance and / or replacement of the functional module.

[0013] Furthermore, the asynchronous incrementing of the same operation time by different operation time counters in different modules no longer occurs, thus eliminating the need for synchronization during normal operation.

[0014] Furthermore, the operation time value determined by the operation time counter of the first functional module is correspondingly stored directly in the storage device in at least one other functional model, such that the counter value determined by the central operation time counter is redundantly stored, but not determined by multiple modules. Therefore, synchronization exists between the operation time values ​​existing in different storage devices of different functional modules during normal operation, because they are determined by only a single operation time counter.

[0015] During the replacement of a functional module, the operation time value recorded in the storage device of the other functional module can be accessed, and this operation time value then forms the basis for the actual operation time value. Therefore, the medical device assumes that each operation time value recorded in the storage device corresponds to the actual operating time or the actual elapsed operation time of the medical device. Thus, a plausibility test is not initially required.

[0016] Therefore, in typical cases where functional modules need to be replaced, technicians can avoid meticulously resetting operation time counters that have become invalid. Instead, they can refer to the operation time values ​​stored in another functional module.

[0017] In other words, this method helps to record the operation time value determined by the operation time counter in different locations or different functional modules within the medical device, so that, due to the provision of such a "backup" during the replacement of one or more functional modules, it can still rely on or refer to the valid operation time value of the operation time counter, which is then preferably automatically adopted by the newly inserted functional module.

[0018] Preferably, the first functional module is a main control module and / or an operating system, and / or the second functional module is a monitoring system and / or a protection system. More preferably, the first and second functional modules each include a separate microprocessor. In other words, each functional module is autonomous to a certain extent and preferably includes its own or a separate microprocessor and its own storage device. However, in another embodiment, some functional modules may only have storage devices arranged in them, without microprocessors, so that the storage of operation time values ​​in the storage devices can also be implemented in the functional module without the need for a microprocessor.

[0019] Preferably, in addition to the first functional module, at least two other functional modules are provided, each of the at least two other functional modules including a separate storage device, wherein each of the other functional modules is configured to store the operation time value determined by the operation time counter of the first functional module in the respective storage device, and wherein, particularly preferably, each functional module includes a separate microprocessor.

[0020] Because multiple functional modules are provided, where operation time values ​​are stored, greater redundancy in the storage of operation time values ​​can be achieved, further increasing the robustness of the operation time counter. For example, during the failure, downtime, or replacement of multiple functional modules, it can still rely on the operation time values ​​stored in the storage devices of other functional modules, and therefore, it can reference the actual elapsed operation time in the medical device, and can also perform automatic synchronization and / or reset of operation time values ​​that have become invalid.

[0021] Preferably, a communication interface is provided between the first functional module and the second functional module. This communication interface is configured to transmit the operation time value determined by the operation time counter of the first functional module to the second storage device, preferably to each storage device of the other functional modules. Using the communication interface, another functional module can also read the operation time value stored in the storage device to determine, within the first functional module, whether the operation time value stored in the second functional module deviates from the value stored in the first functional module.

[0022] In a preferred embodiment, a synchronization device is provided, configured to automatically synchronize and / or automatically restore the operation time values ​​stored in the storage devices of functional modules. Particularly preferred is the automatic reset of the operation time values ​​when deviations occur after maintenance or replacement of a printed circuit board or functional module. Therefore, module replacement can be performed without any additional work related to operation time counters. For example, the storage on a newly connected printed circuit board can then be automatically set based on the operation time values ​​stored in the remaining storage devices of the medical device.

[0023] In a synchronization device, when there are more than two storage devices with different operating time values, a majority decision is preferably made. Based on this decision, the operating time value that was therefore indicated as false is automatically restored or recovered.

[0024] For safety reasons, the maximum operating time value can also preferably be identified as the correct operating time value and therefore adopted.

[0025] The storage device provided in the first functional module and / or the storage device provided in the second functional module and / or all functional modules are preferably adapted to be a non-transitory storage medium or formed as a non-transitory storage medium.

[0026] Preferably, the first storage device of the first functional module is configured to store other values, optionally configuration values ​​and / or setting values ​​and / or calibration values, wherein the second functional module is configured to store other values ​​stored in the storage device of the first functional module in the second storage device, and wherein, optionally, the synchronization device is configured to automatically synchronize the other values ​​stored in the storage device of the functional module with each other and / or automatically restore the other values.

[0027] Therefore, for other values ​​of the medical device, such as configuration values ​​and / or setting values ​​and / or calibration values, redundant storage of these values ​​can be provided within the medical device, enabling automatic synchronization of these values, for example, during the replacement of a functional module. Thus, it is possible to ensure that the medical device is essentially in the same configuration state after a functional module replacement, compared to the state before the replacement. Therefore, users of the medical device can directly continue using the device after a functional module replacement without needing to perform a detailed new configuration.

[0028] Furthermore, the above objectives are achieved by a method for counting operation time in a medical device, having the features of claim 8. Preferred embodiments are provided in this specification, the accompanying drawings, and the dependent claims.

[0029] Therefore, a method is proposed for counting the operation time of a medical device, preferably a dialysis device for performing hemodialysis and / or hemofiltration and / or hemodiafiltration, the medical device, preferably a dialysis device, comprising a first functional module and a second functional module, wherein the first functional module determines the operation time using an operation time counter, and wherein the determined operation time value is stored in a storage device of the first functional module. According to the invention, the operation time value determined by the operation time counter of the first functional module is stored in a second storage device included in the second functional module.

[0030] Since the operation time value determined by the operation time counter of the first functional module is also stored in at least the second functional module, on the one hand, the synchronization of operation time values ​​stored redundantly—essentially as backups—in different functional modules is ensured; on the other hand, in the event of a deviation, the correct operation time value can be easily synchronized and / or easily restored based on one or more operation time values ​​stored in the storage device. Therefore, a simple replacement of the functional module can be performed without losing the value of the operation time counter and without requiring additional effort from maintenance personnel.

[0031] Preferably, the operation time value determined by the operation time counter of the first functional module is stored in other storage devices of other functional modules, thereby achieving higher redundancy.

[0032] According to an advantageous embodiment of the method, when a deviation exists in the operating time values ​​stored in the storage device, automatic synchronization and / or restoration of the operating time values ​​is performed. Therefore, for example, during the replacement of a functional module, the restoration of the operating time values ​​determined by the operating time counter can be achieved without additional effort from maintenance technicians, making it possible to provide a particularly robust and efficient method for counting the operating time of medical devices.

[0033] In addition, automatic synchronization and / or restoration of operation time values ​​can be performed after user input and / or after maintenance and / or connection of medical devices and / or according to a schedule.

[0034] When a predetermined minimum deviation exists in the operation time values ​​stored in the storage device, automatic synchronization and / or recovery of the operation time values ​​can also be performed to achieve synchronization of the operation time values ​​stored in the medical device.

[0035] Advantageously, the most frequently occurring operation time value in the storage device is used as the basis for the synchronization and / or recovery of operation time values. Therefore, a majority decision is essentially made, and based on said decision, it is determined which of the recorded operation time values ​​is ultimately considered deterministic or definitive.

[0036] Preferably, other values ​​are stored in a first storage device of the first functional module, optionally configuration values ​​and / or setting values ​​and / or calibration values, and the other values ​​stored in the storage device of the first functional module are stored in a second storage device of the second functional module, wherein, optionally, the other values ​​stored in the storage devices of the functional modules are automatically synchronized with each other and / or automatically restored. Attached Figure Description

[0037] Other preferred embodiments of the invention will be more readily understood by referring to the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0038] Figure 1 This is a schematic diagram of a medical device with multiple functional modules; and

[0039] Figure 2 This is a schematic diagram of a dialysis device. Detailed Implementation

[0040] In the following explanation, preferred embodiments will be described with reference to the accompanying drawings. In the drawings, the same elements are represented by the same reference numerals, and repeated descriptions may be omitted to avoid redundancy.

[0041] Figure 1 The composition or arrangement of a medical device 1, for example, a dialysis device for performing hemodialysis and / or hemofiltration and / or hemodiafiltration, is illustrated schematically.

[0042] In medical device 1, a first functional module CPU1 is provided. This first functional module CPU1 is provided, for example, as a main control module, and is responsible for controlling medical device 1. The first functional module CPU1 is used, for example, to control patient treatment using the medical device.

[0043] The first functional module CPU1 includes a microprocessor and a storage device or memory M1. The storage device M1 is preferably configured as a non-transitory storage medium to ensure storage independent of the power supply to the functional module CPU1.

[0044] Furthermore, a second functional module CPU2 is provided in the medical device, which also includes a microprocessor and a second non-transitory storage medium M2. The first functional module CPU1 and the second functional module CPU2 can be configured, on the one hand, as a main control module or operating system, and on the other hand, as a protection system. Functional modules CPU1 and CPU2 can be redundantly configured relative to each other, allowing the protection system CPU2 to monitor the main control module CPU1. In the event of downtime of the main control system CPU1, the protection system CPU2 can intervene and thus put the medical device 1 into a safe state and / or trigger alarms and / or output fault or error messages.

[0045] Furthermore, an additional functional module CPU3 is provided in medical device 1, which can be adapted as a monitoring system or formed as a monitoring system. The additional functional module can be provided, for example, in the form of functional module CPU4—such as… Figure 1 As shown by the dashed lines, the additional functional modules can perform other functions within the medical device 1.

[0046] The functional modules CPU1, CPU2, CPU3, and CPU4 each include separate storage devices M1, M2, M3, and M4, preferably non-transitory storage media.

[0047] The first functional module CPU1 also provides an operation time counter 2, which counts the operation time of the medical device 1 and outputs it as an operation time value. The operation time counter 2 uses, for example, the processor frequency of the microprocessor in the first functional module CPU1, and increments the operation time value accordingly after the medical device 1 is turned on. Alternatively, it can count treatment time or other time values ​​that should be measured during the operation time of the corresponding medical device 1.

[0048] The operation time value determined by the operation time counter 2 in the first functional module CPU1 is stored or stored in the non-transitory storage device M1 of the first functional module CPU1.

[0049] For example, storage can be performed every minute or at shorter or longer intervals. Storage can also be performed specifically or additionally when the device is turned off and / or at the start and / or end of treatment.

[0050] Furthermore, the operation time value determined by the operation time counter 2 located in the first functional module CPU1 is transmitted via the communication interface 3 to, for example, the second functional module CPU2, the third functional module CPU3, and—depending on the implementation—also to the fourth functional module CPU4 and / or other functional modules, and is also stored in each of the corresponding storage devices M2 and M3, and—depending on the implementation—also in the optional storage device M4 and / or the storage devices of other optional functional modules. Therefore, during normal operation and according to the embodiment, synchronization of the operation time value exists in all storage devices M1, M2, M3 and optionally M4 of the corresponding functional modules CPU1, CPU2, CPU3 and optionally CPU4.

[0051] When a functional module, such as the second functional module CPU2, needs to be replaced, initialization is performed accordingly when the replacement functional module CPU2' is inserted, and a comparison of the operation time values ​​recorded in storage devices M1, M2', M3 and optionally M4 is performed.

[0052] When a functional module is replaced, it is determined that the operation time value recorded in the storage device M2' of the replaced functional module CPU2' does not correspond to the operation time values ​​recorded in storage devices M1, M3, and optionally M4. Therefore, based on the operation time values ​​recorded in the storage devices M1, M3, and optionally M4 of the other functional modules CPU1, CPU3, and optionally CPU4, the operation time values ​​present in the storage device M2' of the replaced functional module CPU2' are recovered by means of a synchronization device 4 that can be set in the first functional module CPU1.

[0053] Therefore, automatic recovery and / or synchronization of operation time values ​​occur in all storage devices M1, M2', M3, and optionally M4 of functional modules CPU1, CPU2', CPU3, and optionally CPU4, thus providing synchronization of operation time values. Therefore, it is not necessary for maintenance technicians to perform storage comparisons or resets; instead, automatic comparison is provided.

[0054] If there are deviations in the respective operation time values ​​of the storage devices M1, M2, M3, and optionally M4, then when a deviation greater than the minimum value exists, a majority decision is made, for example by the synchronization device 4, to prioritize the operation time value that exists in the largest number among the storage devices M1, M2, M3, and optionally M4. Clearly, the majority decision may have been made if the use of three storage devices M1, M2, M3, and an additional optional storage device M4 or other optional functional modules is not required for the decision, but could be considered in the decision if it exists, even though it is unnecessary.

[0055] When the functional module CPU2' is replaced, the synchronization of the operation time values, except for those of the newly inserted functional module CPU2', applies to all functional modules CPU1, CPU3, and optionally CPU4. Therefore, the automatic recovery of the operation time values ​​in all storage devices M1, M2, M3, and optionally M4 can be achieved accordingly.

[0056] In this way, the backup of the operation time value determined by the operation time counter 2 in the first functional module CPU1 is also implemented in the storage devices M2, M3, and optionally M4 of the other functional modules CPU2, CPU3, and optionally CPU4. Therefore, simple replacement of functional modules is possible without losing information about the elapsed operation time of the medical device 1.

[0057] In an exemplary embodiment, when there is a deviation of less than or equal to 5 hours between the various operation time values ​​in storage devices M2, M3, M4 and the first storage device M1 of the first functional module CPU1, it is assumed that the operation time values ​​recorded in the first storage device M1 are valid for recovering the operation time values. If necessary, the operation time values ​​in storage devices M2, M3 and optionally M4 are set to the operation time values ​​derived from the first storage device M1.

[0058] In cases where the deviation exceeds 5 hours, a majority decision is made by identifying which of the storage devices M1, M2, M3, and optionally M4 is defective and then automatically correcting the erroneous operating time value. For safety reasons, the largest operating time value among all identified as valid is used.

[0059] Validity is determined as follows: if |M1-M2|≤5h is true, then the operation time value in storage device M1 of CPU1 and the operation time value in storage device M2 of CPU2 are marked as valid. Typically, the following comparison needs to be performed on each of the operation time values ​​stored in the storage devices:

[0060] |M1-M2|≤MAX_DEV

[0061] |M1-M3|≤MAX_DEV

[0062] |M2-M3|≤MAX_DEV

[0063] If correction cannot be performed (for example, because the deviation between all operation time values ​​is greater than 5 hours), a fault or error message will be output.

[0064] In addition to the operation time value, other values ​​of medical device 1 can also be redundantly stored in storage devices M1, M2, M3 and optionally M4 of functional modules CPU1, CPU2, CPU3 and optionally CPU4, or stored together with backups in storage devices M1, M2, M3 and optionally M4 of functional modules CPU1, CPU2, CPU3 and optionally CPU4. For example, the configuration value and / or setting value and / or calibration value of the first functional module CPU1 can be stored in storage devices M1, M2, M3 and optionally M4, and can be synchronously maintained by means of synchronization device 4, so that in the event of replacement of functional modules CPU1, CPU2, CPU3 and optionally CPU4, and especially the first functional module, the configuration value and / or setting value and / or calibration value can be automatically relied upon.

[0065] exist Figure 2 In another embodiment, medical device 1 is configured as a dialysis device. Therefore, the device includes a dialyzer 10, which comprises a blood space 14 and a dialysate space 16, wherein the two spaces are separated from each other by means of a membrane 12. Such dialyzers are well known. They include a housing in which, for example, a plurality of hollow fiber membranes in a cylindrical shape are abutted to form a hollow fiber bundle. Blood flows through the internal space of the hollow fiber membranes, while dialysate flows in the space between the hollow fiber membranes and the filter housing. Obviously, other configurations of the dialyzer can be provided.

[0066] Therefore, blood space 14 should be understood as the sum of the areas or regions in which blood flows within dialyzer 10, while dialysate space 16 should be understood as the sum of the areas or regions in which dialysate flows. The walls of the membrane of dialyzer 10 are configured as semi-permeable membranes, allowing mass exchange between blood and dialysate to occur. During hemodialysis, this exchange occurs by diffusion until a concentration equilibrium is established between blood space 14 and dialysate space 16. Depending on the pore size of the membrane, larger or smaller molecules are allowed to enter dialysate space 16.

[0067] In operation, the dialysis device 1 is connected to the patient. The patient's blood flows into the blood space 14 of the dialyzer 10 via the blood feed line 140, and is thus recirculated back to the patient via the recirculation line 142. In the dialysate space 16 of the dialyzer 10, the dialysate preferably flows in the countercurrent direction relative to the blood flow, such as... Figure 2 As indicated by the arrows in the diagram. During dialysis, the aforementioned exchange of substances occurs between the blood and the dialysate, wherein the dialysate subsequently exits the dialyzer 10 via catheter or line 162. Therefore, the dialysate includes substances that are removed from the blood circulation during dialysis.

[0068] The dialysate is supplied by dialysate apparatus 18. Dialysate apparatus 18 facilitates the flow of dialysate into dialysate space 16 via dialysate line 160, and its exit from dialysate space 16 via dialysate line 162, and its recirculation back to dialysate apparatus 18. Used or discarded dialysate fed to dialysate apparatus 18 can be separated from fresh dialysate and thus processed, or can be at least partially reused through appropriate purification. It can also be assumed that dialysate is already positioned upstream of dialysate apparatus 18.

[0069] In order to feed dialysate in the corresponding dialysate line, a dialysate pump (not shown) is provided, which may be arranged, for example, upstream or downstream of dialyzer 10, or in dialysate equipment 18.

[0070] Therefore, a blood pump (not shown) for feeding blood into the blood lines of the dialyzer 10 is also provided. Additionally, other dialysis components, such as valves, clamps, drip chambers, pressure measuring devices, or anticoagulant pumps, may be provided; however, these additional dialysis components are subject to... Figure 2 The implementation details are not shown.

[0071] In addition, two functional modules, CPU1 and CPU2, are arranged in dialysis device 1, which basically correspond to the... Figure 1 Functional modules.

[0072] Functional modules CPU1 and CPU2 are connected to each other via communication interface 3, such that the operation time value counted or determined by the operation time counter 2 provided by the first functional module CPU1 is stored in the non-transitory storage medium M1 of the first functional module CPU1, and is also transmitted to the second functional module CPU2 via communication interface 3 and stored in the corresponding storage device M2 of the second functional module CPU2. Therefore, during normal operation and depending on the implementation, synchronization of the operation time values ​​in all storage devices M1 and M2 of the corresponding functional modules CPU1 and CPU2 occurs.

[0073] Although not shown in more detail, other functional modules and / or synchronization devices may optionally be provided, such as those mentioned above. Figure 1 The implementation methods described herein.

[0074] The first functional module CPU1 and the second functional module are in Figure 2The medical device 18 is described as a series of separate functional modules, each communicatively connected to the dialysis fluid apparatus 18. Therefore, it can be assumed that the first functional module CPU1 is configured as the main control module or operating system responsible for controlling the medical device 1. Thus, the treatment of the patient using the medical device 1 is controlled accordingly using the first functional module CPU1. Consequently, the second functional module CPU2 implements, for example, the function of a protection system that monitors the main control module CPU1 and can accordingly bring the medical device 1 to a safe or secure state in case of downtime or failure of the main control module CPU1. The second functional module CPU2 can be configured to be redundant with respect to the main control module. Although... Figure 2 The functional modules CPU1 and CPU2 depicted are connected to the dialysate device 18, but alternatively or additionally, they may also be connected to other components of the dialysis device 1 to control other functions of dialysis treatment accordingly. For example, the functional modules may be connected to pumps and / or valves that feed blood or dialysate in corresponding lines. Furthermore, the functional modules may be arranged in separate devices or integrated into corresponding components, for example as an integrated control device, wherein operating time values ​​are stored in different storage media.

[0075] Where applicable, all the various features depicted in the exemplary embodiments according to the scope of the invention may be combined with each other and / or may be interchanged.

[0076] List of reference numerals

[0077] 1. Medical equipment

[0078] 10 Dialyzers

[0079] 12 membranes

[0080] 14 Blood Space

[0081] 140 Blood Feed Line

[0082] 142 Recirculation Line

[0083] 16 Dialysis fluid space

[0084] 160 Dialysis fluid line

[0085] 162 Dialysis fluid line

[0086] 18 Dialysis fluid equipment

[0087] 2. Operation Time Counter

[0088] 3. Communication Interface

[0089] 4. Synchronization equipment

[0090] CPU1 First Functional Module

[0091] CPU2 Second Functional Module

[0092] CPU3 Third Functional Module

[0093] CPU4 Fourth Optional Function Module

[0094] M1 First Storage Device

[0095] M2 Second Storage Device

[0096] M3 Third Storage Device

[0097] M4 Fourth Optional Storage Device

Claims

1. A medical device (1) for performing hemodialysis and / or hemofiltration, comprising a first functional module (CPU1) and a second functional module (CPU2), wherein, An operation time counter (2) for counting operation time is provided in the first functional module (CPU1), and wherein the first functional module (CPU1) is configured to store the operation time value determined by the operation time counter (2) in a first storage device (M1) of the first functional module (CPU1), wherein a second storage device (M2) is provided in the second functional module (CPU2). Its features are, The second functional module (CPU2) is configured to store the operation time value determined by the operation time counter (2) of the first functional module (CPU1) in the second storage device (M2), wherein the first functional module (CPU1) is a main control module and the second functional module (CPU2) is a monitoring system, and the first functional module (CPU1) and the second functional module (CPU2) each include a separate microprocessor.

2. The medical device (1) according to claim 1, characterized in that, The first functional module (CPU1) is an operating system, and / or the second functional module (CPU2) is a protection system.

3. The medical device (1) according to claim 1 or 2, characterized in that, In addition to the first functional module (CPU1), at least two other functional modules (CPU2, CPU3, CPU4) including the second functional module are provided, each of the at least two other functional modules including a separate storage device (M2, M3, M4), wherein each of the other functional modules (CPU2, CPU3, CPU4) is configured to store the operation time value determined by the operation time counter (2) of the first functional module (CPU1) in the corresponding storage device (M2, M3, M4).

4. The medical device (1) according to claim 3, characterized in that, Each functional module (CPU1, CPU2, CPU3, CPU4) includes a separate microprocessor.

5. The medical device (1) according to claim 3, characterized in that, A communication interface (3) is provided between the first functional module (CPU1) and the second functional module (CPU2), the communication interface being configured to transmit the operation time value determined by the operation time counter (2) of the first functional module (CPU1) to the second storage device (M2).

6. The medical device (1) according to claim 5, characterized in that, The communication interface is configured to transmit the operation time value determined by the operation time counter (2) of the first functional module (CPU1) to each storage device (M2, M3, M4) of the other functional modules (CPU2, CPU3, CPU4).

7. The medical device (1) according to claim 1 or 2, characterized in that, A synchronization device (4) is provided, which is configured to automatically synchronize the operation time values ​​stored in the storage devices (M1, M2, M3, M4) of any functional module (CPU1, CPU2, CPU3, CPU4) with each other and / or automatically restore the operation time values.

8. The medical device (1) according to claim 1 or 2, characterized in that, The storage device (M1) provided in the first functional module (CPU1), or the storage device (M2) provided in the second functional module (CPU2), or the storage devices (M1, M2, M3, M4) provided in all functional modules (CP1, CPU2, CPU3, CPU4) are non-transitory storage media.

9. The medical device (1) according to claim 1 or 2, characterized in that, The first storage device (M1) of the first functional module (CPU1) is configured to store other values, wherein the second functional module (CPU2) is configured to store the other values ​​stored in the storage device (M1) of the first functional module (CPU1) in the second storage device (M2).

10. The medical device (1) according to claim 9, characterized in that, The other values ​​include configuration values ​​and / or setting values ​​and / or calibration values.

11. The medical device (1) according to claim 9, characterized in that, A synchronization device (4) is provided, the synchronization device (4) being configured to automatically synchronize the other values ​​stored in the storage devices (M1, M2, M3, M4) of any functional module (CPU1, CPU2, CPU3, CPU4) with each other and / or automatically restore the other values.

12. The medical device (1) according to claim 1 or 2, characterized in that, The medical device in question is a dialysis device.

13. A method for counting the operating time of a medical device used to perform hemodialysis and / or hemofiltration, said medical device comprising a first functional module (CPU1) and a second functional module (CPU2), wherein, The first functional module (CPU1) uses an operation time counter (2) to determine the operation time, and the determined operation time value is stored in the storage device (M1) of the first functional module (CPU1). Its features are, The operation time value determined by the operation time counter (2) of the first functional module (CPU1) is stored in the second storage device (M2) included by the second functional module (CPU2), wherein the first functional module (CPU1) is the main control module and the second functional module (CPU2) is the monitoring system.

14. The method according to claim 13, characterized in that, The operation time value determined by the operation time counter (2) of the first functional module (CPU1) is stored in other storage devices (M2, M3, M4) of other functional modules (CPU2, CPU3, CPU4) including the second functional module.

15. The method according to claim 13 or 14, characterized in that, When a deviation exists in the operation time values ​​stored in the storage devices (M1, M2, M3, M4), automatic synchronization and / or recovery of the operation time values ​​are performed.

16. The method according to claim 15, characterized in that, Automatic synchronization and / or restoration of the operation time value is performed after user input and / or after maintenance and / or connection of the medical device (1) and / or according to the schedule.

17. The method according to claim 15, characterized in that, When a predetermined minimum deviation exists in the operation time values ​​stored in the storage devices (M1, M2, M3, M4), automatic synchronization and / or restoration of the operation time values ​​are performed.

18. The method according to claim 15, characterized in that, The most frequently occurring operation time value in the storage devices (M1, M2, M3, M4) is used as the basis for the synchronization and / or recovery of the operation time value.

19. The method according to claim 13 or 14, characterized in that, Other values ​​are stored in the first storage device (M1) of the first functional module (CPU1), and the other values ​​stored in the storage device (M1) of the first functional module (CPU1) are stored in the second storage device (M2) of the second functional module (CPU2).

20. The method according to claim 19, characterized in that, The other values ​​include configuration values ​​and / or setting values ​​and / or calibration values.

21. The method according to claim 19, characterized in that, The other values ​​stored in the storage devices (M1, M2, M3, M4) of any functional module (CPU1, CPU2, CPU3, CPU4) are automatically synchronized with each other and / or automatically restored.

22. The method according to claim 13 or 14, characterized in that, The medical device in question is a dialysis device.

Images