Abstract:
A method, assigning a medical device from a data network to a location, includes: receiving a group message, having a medical device data network address; providing a first data set, indicating network addresses of active network components; and sending request messages to active network components, indicating a data network address thereof and data network address of the medical device. An acknowledgment message from a defined active network component indicates the data network address and a port identity thereof and data network address of the medical device. A second data set is provided indicating an assignment of tuples of active component data network addresses and port identities to locations. The medical device is assigned a location based on the second data set, the data network address of the defined active component and the indicated port identity. An assignment data set is provided indicating an assignment of medical device to assigned location.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application claims the benefit of priority under 35 U.S.C. §119 of German Application 10 2015 016 403.1, filed Dec. 18, 2015, the entire contents of which are incorporated herein by reference. 
       FIELD OF THE INVENTION 
       [0002]    The present invention relates to medical devices, which have a data network interface for transferring such patient-related data as, e.g., physiological values of a patient across a network to a central network entity, for example, a server. 
       BACKGROUND OF THE INVENTION 
       [0003]    Medical devices, which have a data network interface for transferring such patient-related data as, e.g., physiological values of a patient across a network to a central network entity, for example, a server, are known from the state of the art. In this case, it is occasionally necessary in such a central entity to know at which physical location (e.g., bed of a hospital ward) a defined medical device is located. This is necessary in order to then assign the provided data of the medical device to a physical location of the patient or else to a defined patient. Such an assignment may likewise be displayed, for example, within the framework of a visual display or a display of patient data in order to inform the clinical staff about to which physical location or else to which patient the displayed data belong. 
         [0004]    Methods, in which the location data are inputted directly into the medical device, for example, by means of an input at the medical device when positioning the medical device at the physical location, are known in this connection from the state of the art. The medical device may then additionally provide this location data within the framework of providing physiological patient data. 
         [0005]    A method, in which a patient monitor is located as a medical device with regard to its location by a central network unit having a data set, which indicates respective locations of respective network switches and wherein a central unit can determine to which network switching unit the patient monitor is connected by means of a data protocol and exchange of data messages, is known from US 2011/0187526 A1. 
       SUMMARY OF THE INVENTION 
       [0006]    An object of the present invention is to provide an assignment of a medical device to a physical location in an automated manner. 
         [0007]    The method according to the present invention for assigning a medical device from a data network to a physical location has the steps: Receiving a group message, which has a data network address of the medical device; providing a first data set, which indicates respective data network addresses of respective active network components of the data network; sending respective request messages to the respective active network components, wherein a respective request message indicates a respective data network address of the respective active network component and the data network address of the medical device; receiving an acknowledgment message from a defined active network component, which indicates the data network address of the defined active network component, a port identity of a port of the defined active network component and the data network address of the medical device; providing a second data set, which indicates an assignment of respective tuples of active network component data network addresses and port identities to respective locations; assigning the medical device to a location on the basis of the second data set as well as the data network address of the defined active network component and of the indicated port identity; as well as further providing an assignment data set, which indicates an assignment of the medical device to the assigned location. Furthermore, the second data set indicates an assignment of the respective tuples of active network component data network addresses and port identities to respective patient data sets, which identify patients, wherein the medical device is further assigned to a patient data set on the basis of the second data set, and wherein the assignment data set has, further, the assigned patient data set. 
         [0008]    In the sense of the present application, an active network component is a router or a managed switch or a multilayer switch. 
         [0009]    The method according to the present invention is advantageous because only an assignment of a physical location to a defined port or to a port identity of an active network component has to be present or be provided in order to be able to then assign the medical device to the physical location in an automated manner. 
         [0010]    In a clinical setting, provisions are usually made for an active network component, e.g., a router or a managed switch, which has a plurality of respective ports, to which respective medical devices can be connected, to be present, for example, in a hospital room. In this connection, defined ports for the connection of medical devices to defined physical locations are provided. For example, defined ports are provided for the connection of medical devices for a particular hospital bed. An active network component such as a router or a managed switch can thus provide one or more hospital beds with a network connection in a setting such as a hospital room. 
         [0011]    By providing data, in the form of the second data set, about which port of which active network component is assigned to a defined physical location, it can be determined at which physical location the medical device is located in an automated manner by the method according to the present invention or by the device according to the present invention. To this end, it is only necessary for the medical device to send a group message into the data network, wherein the message must simply only indicate the identity of the medical device. The assignment of the medical device to the physical location can then take place by the exchange of the other messages in the course of the suggested method. 
         [0012]    A group message in the sense of the present application is a data network message. Such a group message as data network message is sent to one or more network units of a group of network units. The group of network units is then preferably defined by group identification data, e.g., a multicast address or a quantity of a plurality of respective data network addresses of respective network units, which quantity is predefined by means of a separate data set. 
         [0013]    A group message in the sense of the present application is thus a data network message of the type of a broadcast message, an anycast message, a multicast message or one or more unicast messages. 
         [0014]    In conventional methods, in which data concerning the physical location of the device are inputted into the medical device, for example, by means of an input at the medical device, the clinical staff is entrusted with this input and is thus required in the staffs work load. This is avoided by the method according to the present invention and the device according to the present invention. 
         [0015]    In case of other possible scenarios of an assignment of a medical device to a location, for example, a barcode, which is positioned on the medical device, as well as a second barcode, which is located at the physical location, is scanned, wherein the scanning unit then transmits the pooling of the data of the barcode to a central network unit, so that the central unit is then informed about the physical location of the medical device. In this case as well, the clinical staff has to perform this scanning operation. Such a work load of the clinical staff is also avoided by the method according to the present invention and the device according to the present invention. 
         [0016]    Before receiving the group message, which has the data network address of the medical device, the method preferably has a step of sending a group message, which indicates a request to medical devices for them to send their own respective group messages, which indicate their own respective data network addresses. This configuration of the present invention is advantageous because the medical device itself does not have to determine at which time it sends the group message, which has the data network address of the medical device. This sending of the group message, which has the data network address of the medical device, may then be performed by the medical device when it receives the group message, which indicates a request to the medical device to send its respective one group message. Consequently, it remains in the hand of the central device for the data network to decide when a medical device reports a group message to the central device. 
         [0017]    The assignment data set preferably contains identification data of the medical device as well as also a data set, which identifies the location. Consequently, the provided data set can be used directly by another unit and the identification data as well as the data set, which identifies the location, can be accessed. 
         [0018]    The identification data of the medical device are preferably the data network address of the medical device. This is advantageous since such data network addresses within a data network are usually assigned unambiguously, so that even the data network address can be used as identification data of the medical device. 
         [0019]    According to the present invention, the second data set further indicates an assignment of respective tuples of active network component data network addresses and port identities to respective patient data sets, which identify patients, wherein the medical device is then further assigned to a patient data set on the basis of the second data set, wherein the assignment data set also has the assigned patient data set. This is advantageous because not only an assignment of the medical device to a physical location, but also to the patient data is performed in an automated manner. Thus, the assignment data set can be used to determine an assignment of the medical device to the patient directly. 
         [0020]    The provision of the assignment data set preferably comprises the sending of a data message to the medical device, wherein the data message contains the assignment data set. This configuration of the present invention is advantageous because the medical device is informed, as a result, about which is its physical location and possibly also about to which patient it is to be assigned. For its part, the medical device may then possibly in the course of a sending of physiological patient data indicate its location at the same time as well, so that another unit, which receives all these data, is then indirectly or directly informed about to which physical location and also possibly to which patient these sent physiological data are to be assigned. 
         [0021]    The provision of the assignment data set preferably comprises the sending of a data message to a server unit, wherein the data message contains the assignment data set. This configuration of the present invention is advantageous because the server is thus informed about which medical device is to be assigned to which physical location and possibly to which patient as well, so that an assignment of physical location and possibly of patient to medical devices in the server unit can be recorded by simple reading of the data message and may possibly be used in the course of other applications. 
         [0022]    The sending of the data message to the server unit preferably takes place upon receiving a request message at the server unit. This is advantageous because the sending of the data message to the server unit does not have to take place immediately and also not absolutely periodically, but only upon receipt of the request message. A reduction of the data volume arising in the data network is thus achieved. 
         [0023]    The method is preferably executed with computer program means (a computer program configuration) on at least one processing unit. This is advantageous because such an implementation of computer program means, i.e., software, on one or more processing unit makes possible an economic implementation of the method. 
         [0024]    Further, a device for a data network is suggested, having at least one data network interface for receiving and for sending data network messages; at least one memory unit; at least one processing unit, wherein the memory unit is configured to provide a first data set, which indicates respective data network addresses of respective active network components of the data network; and a second data set, which indicates an assignment of respective tuples of active network component data network addresses and port identities to respective locations, wherein the processing unit using the data network interface is configured to receive a group message, which has a data network address of the medical device, to send respective request messages to the respective router of the first data set, wherein a respective request message indicates a respective data network address of the respective active network component and the data network address of the medical device, to receive an acknowledgment message from a defined active network component, which indicates the data network address of the defined active network component, a port identity of a port of the defined active network component and the data network address of the medical device, to assign the medical device to a location on the basis of the second data set as well as of the data network address of the defined router and of the indicated port identity as well as further to provide an assignment data set, which indicates an assignment of the medical device to the assigned location. Furthermore, it, the second data set, indicates an assignment of the respective tuples of active network component data network addresses and port identities to respective patient data sets, which identify patients, wherein the medical device is further assigned to a patient data set on the basis of the second data set, and wherein the assignment data set has, further, the assigned patient data set. 
         [0025]    Advantages of the suggested method likewise apply to the suggested device. These advantages likewise apply to the implementation of the method according to the present invention with computer program means on at least one processing unit. 
         [0026]    The present invention is explained in greater detail below on the basis of the figures on the basis of special embodiments without limiting the general idea of the invention. The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0027]    In the drawings: 
           [0028]      FIG. 1  is a schematic view showing a network connection of medical devices to a central network unit; 
           [0029]      FIG. 2  is a schematic view showing a data network with a device according to the present invention; and 
           [0030]      FIG. 3  is a schematic view showing data network messages, which are used in the course of the method according to the present invention. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0031]    Referring to the drawings,  FIG. 1  shows a scenario, in which respective patients PT 1 , PT 2  are located at respective physical locations in the form of their respective beds B 1 , B 2 . Each patient PT 1 , PT 2  is provided, in this example, with a respective medical device MG 1 , MG 2 , which is each connected via a respective wired data line DL 1 , DL 2  to a respective active network component in the form of a router RO. In this case, each medical device MG 1 , MG 2  is connected to one of the own respective ports PRO 1 , PRO 2 , of the router RO. The router RO has, further, a network interface NESR, by means of which it can communicate with a central unit, for example, a server, SE 1 , via a subnetwork TNW 1 . The communication units shown here MG 1 , MG 2 , RO as well as SE 1  and the subnetwork TNW 1  form a data network NW 1 . Instead of the router RO, a managed switch or a multilayer switch is possible as an active network component as well. 
         [0032]    If a medical device MG 1 , MG 2  provides respective patient data of respective patients PT 1 , PT 2  to the server unit SE 1  via the data network NW 1 , then the server unit SE 1  has to know which medical device MG 1 , MG 2  is to be assigned to which physical location B 1 , B 2 . 
         [0033]    The server unit SE 1  shall preferably also know to which patient PT 1 , PT 2  a respective medical device MG 1 , MG 2  is to be assigned. To this end, methods already mentioned above may be performed by applying the work effort of the clinical staff. 
         [0034]    A mode of operation of the method according to the present invention shall now be explained in greater detail with reference to  FIG. 2 . 
         [0035]      FIG. 2  shows a data network NW, in which a medical device MG is located, which is connected to a port P 2  of an active network component in the form of a router R 1  directly via a data line DL. This data line DL is preferably a LAN cable. The medical device MG has a data network interface NESM. Instead of a router R 1 , a managed switch or a multilayer switch is also possible as an active network component. 
         [0036]    The router R 1  has a variety of ports P 1 , P 2 , P 3 . Such ports P 1 , P 2 , P 3  are possibly assigned to defined physical locations for medical devices. Thus, provisions are possibly made in a clinical setting for a medical device MG to be able to be connected only to a defined port P 2  of a router R 1  at a defined physical location. The router R 1  has a data network interface NESR 1  to a subnetwork TNW. 
         [0037]    A second exemplary active network component in the form of a router R 2  with respective ports P 11 , P 12 , P 13  and its own data network interface NESR 2  for communication to the subnetwork TNW is, further, shown. Instead of a router R 02 , a managed switch or a multilayer switch is also possible as an active network component. 
         [0038]    Further, a server unit SE is shown, which is connected to the subnetwork TNW. 
         [0039]    The device V according to the present invention has at least one data network interface NES for receiving or sending data network messages. Further, the device V has at least one processing unit P. Further, the device V has at least one memory unit MEM. The processing unit P is configured to receive and to send a variety of data messages using the data network interface NES. 
         [0040]    The memory unit MEM provides a first data set DA 1 , which indicates respective data network addresses of respective active network components of the data network, which shall still be explained later in greater detail with reference to  FIG. 3 . 
         [0041]    Further, the memory unit MEM provides a second data set DA 2 , which indicates an assignment of respective tuples of a respective active network component data network address and a respective port identity to a respective physical location. This shall also be explained later in greater detail with reference to  FIG. 3 . 
         [0042]    The device V performs a method according to the present invention in order to bring about an assignment of the medical device MG to a physical location. 
         [0043]      FIG. 3  shows a sequence of an exchange of data network messages in the course of the method according to the present invention. 
         [0044]    The medical device MG is represented on the left-hand side, wherein the router R 1  (active network component) is located next as a communication path from the device MG to the subnetwork TNW, wherein then continuing further behind the router R 1 , the subnetwork TNW represents a connection to the device V according to the present invention. The communication in the network NW takes place, for example, via the known IP technology using known routing protocols as well as known IP messages. 
         [0045]    The medical device MG sends a group message BC, which has a data network address IP-MG, and preferably in the form of an IP address, of the medical device. Further, the group message BC has preferably a data element DEMG, which indicates that the group message BC was sent from a medical device MG. The group message preferably has, further, identification data IDMG, which unambiguously identify the medical device MG. These identification data IDMG do not necessarily have to be contained in the group message BC in order to use these later as identification data of the medical device; instead, the data network address IP-MG of the medical device MG may also be used later as identification data. 
         [0046]    A group message BC in the sense of the present application is a data network message. Such a group message as a data network message is sent to one or more network units of a group of network units. The group of network units is then preferably defined by group identification data, e.g., a multicast address or a quantity of a plurality of respective data network addresses of respective network units, which quantity is predefined by means of a separate data set. 
         [0047]    A group message in the sense of the present application is thus a data network message of the type of a broadcast message, an anycast message, a multicast message or one or more unicast messages. 
         [0048]    The group message BC is a broadcast message BC in this example. 
         [0049]    The group message BC is as a group message via the router R 1  and the subnetwork TNW to the device V. 
         [0050]    The sending of the group message BC from the medical device MG may preferably take place in case the medical device MG has first received its data network address IP-MG. Such a receipt of a data network address IP-MG may be brought about, for example, by the medical device MG executing the DHCP protocol in an IP network. 
         [0051]    The sending of the group message BC by the medical device may also take place in case the medical device MG has received a new IP address within the framework of a reallocation of IP addresses. 
         [0052]    As an alternative to this, the sending of the group message BC may be carried out by the medical device MG if the medical device MG has received a request message BC 0  beforehand. Thus, before receiving the group message BC, the device V according to the present invention may send its own group message BC 0 , in the form of a broadcast message in this example, which indicates a request to medical devices MG to send their own respective group messages BC, which indicate their own respective data network addresses IP-MG. In this connection, a group message BC 0  has at least one data element REQD, which indicates this request. Optionally, the group message BC 0  has the sender address IP-V as the data network address of the device V. 
         [0053]    A first data set DA 1  is provided to the device V. This data set DA 1  indicates respective data network addresses IP-R 1 , IP-R 2  of respective routers or active network components of the data network. These data network addresses IP-R 1 , IP-R 2  may be pooled in the device V by using usual protocols for obtaining topology data of the data network and then even be provided by the device V in the data set DA 1 . The data set DA 1  is preferably a data set provided to the device V beforehand. 
         [0054]    The device V sends respective request messages REQ 1 , REQ 2  to those routers R 1 , R 2 , which are indicated in the first data set DA 1 . A respective request message REQ 1 , REQ 2  indicates a respective data network address IP-R 1 , IP-R 2  of the respective router R 1 , R 2  as well as the data network address IP-MG of the medical device MG. The request message REQ 1 , REQ 2  preferably has, further, the sender address IP-V as the data network address of the device V. 
         [0055]    If the corresponding request message REQ 1 , which is to the router R 1 , is now received at the router R 1 , then the router R 1  determines, at which defined port P 2  the medical device MG is connected to the router. 
         [0056]    The router may carry out this determination of the defined port P 2 , for example, upon receiving the message REQ 1 . As an alternative, the router may carry out this determination beforehand and store the port assignment information thus obtained temporarily in a data set or a table. In this alternative embodiment, the determination is thus carried out by reading the port assignment information from the data set or the table. 
         [0057]    For determining a port identity of a port in relation to a network device, i.e., the medical device, a variety of methods and protocols, which an active network component, i.e., a router or a managed switch or multilayer switch, can execute, are known from the state of the art. For this, for example, the Address Resolution Protocol (ARP), among others, may be accessed. For the example of a managed switch of an IP network, the port identity can be determined by using corresponding commands or messages as described in the document “Cisco 300 Series Stackable Managed Switches Command Line Interface Reference Guide, Chapter 22, Release 1.4, 2014 Cisco Systems, Inc.” http://www.cisco.com/c/dam/en/us/td/docs/switches/lan/csbms/sf30x_sg30x/administration_guide/CLI_300.pdf. 
         [0058]    After determining the port identity, the router R 1  sends an acknowledgment message ACK to the device V. The acknowledgment message ACK indicates the data network address IP-R 1  of the router R 1 , a port identity PID of the port of the router R 1 , to which the medical device MG is connected as well as the data network address IP-MG of the medical device MG. Further, the message ACK has the target address IP-V as the data network address of the device V. 
         [0059]    A second data set DA 2  is provided to the device V. The data set DA 2  indicates an assignment of respective tuples of a respective router data network address or of a respective active network component data network address and of a respective port identity to a respective location. For example, a tuple of the router data network address IP-R 1  and of the port identity PID 1  is indicated to the location information LOC 1 . The data set DA 2  preferably has, further, patient data sets PTA, . . . , PTF, which likewise are assigned to a tuple of an active network component network address or router data network address IP-R 1  and of a port identity PID 1 . 
         [0060]    Corresponding other tuples, such as, for example, the tuple IP-R 2 , PID 11 , are thus also assigned to a physical location LOC 11  as well as preferably patient data PTD. 
         [0061]    An assignment of the medical device to a physical location then takes place on the basis of the second data set DA 2  as well as the data network address IP-R 1  of the router R 1  and the indicated port identity PID. An assignment data set ZD, in which, for example, the data network address IP-MG is contained as identification data, is thus generated; further, a data set LOC 2 , which indicates the location of the medical device MG, is contained in the data ZD. The assignment data set ZD preferably has, further, the identity IDMG of the medical device MG as identification data, which were preferably sent within the framework of the group message BC beforehand by the medical device MG to the device V, and which the device V preferably stores there for processing. 
         [0062]    It is likewise possible that in addition to the location information LOC 2 , the assignment data set ZD has only the identification data IDMG and not the data network address IP-MG of the medical device MG as identification data. 
         [0063]    The assignment data set ZD has, further, the patient data PTB. 
         [0064]    The medical device MG is thus assigned on the basis of the second data set DA 2  to a patient data set PTB, so that the assignment data set ZD also has the patient data set PTB. 
         [0065]    The assignment data set ZD is, in other words, a data set, which indicates an assignment of the medical device MG to a physical location LOC 2 . 
         [0066]    The assignment mentioned here thus takes place by comparing and checking for agreement of a combination of the data network address IP-R 1  of the router R 1  and the port identity PID with corresponding tuples from the data set DA 2 . 
         [0067]    The assignment data set ZD is then provided to the device V. 
         [0068]    The provision preferably comprises the sending of a data message DN to the medical device MG, wherein the data message DN contains the assignment data set ZD. 
         [0069]    The data message DN is directed to the medical device MG and thus contains the data network address IP-MG of the medical device MG as well as at least also the data set LOC 2  as location information, which identifies the physical location, as the target network address. Further, the data message DN, as the above-mentioned assignment data set ZD, preferably has the identification data IDMG of the medical device MG as well as the patient data set PTB. The data message DN has the data network address IP-V of the device V sending the message DN as sender address. 
         [0070]    After receiving the data message MG, the medical device may itself then have data LOC 2  with regard to its physical location and likewise provide these data then, e.g., within the framework of a provision of physiological patient data to other units, for example, the central server unit SE from  FIG. 2 . 
         [0071]    A data message DN 2  is preferably sent to the server unit SE by the device V, wherein the message likewise contains the assignment data set ZD. The structure of the data message DN 2  is hence up to the target address IP-SV identical to the structure of the data message DN at the medical device MG. 
         [0072]    The sending of the data message DN 2  to the server unit SE from  FIG. 2  preferably takes place upon receipt of a request message REQX. Such a request message REQX from a server unit SE from  FIG. 2  has a data element REQD 2 , which indicates that the device V shall send the data message DN 2  to the server unit SE. Consequently, a query of assignment of medical devices to physical locations by the server unit to the device V is made possible. 
         [0073]    The method is preferably executed with computer program means on at least one processing unit from  FIG. 2 . 
         [0074]    The device V from  FIG. 2  is thus correspondingly configured to execute the method according to the present invention with its data network interface NES, its memory unit MEM as well as its processing unit P. 
         [0075]    Even though some aspects were described in connection with a device, it is understood that these aspects also represent a description of the corresponding method, so that a block or a component of a device is also defined as a corresponding method step or as a feature of a process step. In analogy thereto, aspects, which were described in connection with a method step or as a method step, also represent a description of a corresponding block/step or detail or feature of a corresponding device, or that the device or the corresponding processing unit is configured to execute the method step. 
         [0076]    The suggested processing unit shall be considered to be at least one processing unit. An implementation of the at least one processing unit may also be achieved by a combination of a plurality of processing units, preferably by using software in conjunction with hardware. Depending on defined implementation requirements, exemplary embodiments of the present invention may be implemented in hardware and/or in software. The implementation may be carried out by using a digital storage medium, for example, a floppy disk, a DVD, a Blu-Ray Disc, a CD, an ROM, a PROM, an EPROM, an EEPROM or a FLASH memory, a hard drive or another magnetic or optical memory, on which electronically readable control signals are stored, which can interact or do interact with a programmable hardware component such that the respective method is executed. 
         [0077]    A programmable hardware component may be formed by a processor, a computer processor (CPU =Central Processing Unit), a graphics processor (GPU=Graphics Processing Unit), a computer, a computer system, an application-specific integrated circuit (ASIC), an integrated circuit (IC), a one-chip system (SOC=System on Chip), a programmable logic element or a field programmable gate array (FPGA) with a microprocessor. 
         [0078]    The digital storage medium may therefore be machine- or computer-readable. Some exemplary embodiments thus comprise a data carrier, which has electronically readable control signals, which are able to interact with a programmable computer system or a programmable hardware component such that one of the methods described herein is executed. An exemplary embodiment is thus a data carrier (or a digital storage medium or a computer-readable medium), on which the program for executing one of the methods described herein is recorded. 
         [0079]    Exemplary embodiments of the present invention can generally be implemented as a program, firmware, computer program or computer program product with a program code or as data, wherein the program code or the data is or are operative to execute one of the methods when the program runs on a processor or a programmable hardware component. The program code or the data may, for example, be stored on a machine-readable carrier or data carrier. The program code or the data may be present as a source code, machine code or byte code as well as another intermediate code, among others. 
         [0080]    Another exemplary embodiment is, further, a data stream, a signal sequence or a sequence of signals, which represents the program for executing one of the methods described herein. The data stream, the signal sequence or the sequence of signals may, for example, be configured to that effect to be transferred via a data communication link, for example, via the internet or another network. Exemplary embodiments are thus also signal sequences representing data, which are suitable for a transmission via a network or a data communication link, wherein the data represent the program. 
         [0081]    A program according to an exemplary embodiment may implement one of the methods during its execution, for example, by reading these storage locations or writing a datum or a plurality of data into same, as a result of which possibly switching operations or other operations in transistor structures, in amplifier structures or in other electric, optical, magnetic components or components operating according to another operating principle are brought about. Correspondingly, by reading a storage location, data, values, sensor values or other data can be collected, determined or measured by a program. A program may hence collect, determine or measure variables, values, measured variables and other data by reading one or a plurality of storage locations, as well as bring about, cause or execute an action as well as activate other devices, machines and components by writing into one or a plurality of storage locations. 
         [0082]    While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles. 
       Appendix: 
     LIST OF REFERENCE CHARACTERS 
       [0083]      
         [0000]    
       
         
               
               
             
           
               
                   
               
             
             
               
                 Acknowledgment message 
                 ACK 
               
               
                 Bed 
                 B1, B2 
               
               
                 Group message 
                 BC, BC0 
               
               
                 Data set 
                 DA1, DA2 
               
               
                 Data element 
                 DEMG 
               
               
                 Data line 
                 DL, DL1, DL2 
               
               
                 Data message 
                 DN, DN2 
               
               
                 Identification data 
                 IDMG 
               
               
                 Data network addresses 
                 IP-R1, IP-R2, IP-MG 
               
               
                 Target address 
                 IP-SV 
               
               
                 Sender address 
                 IP-V 
               
               
                 Location information 
                 LOC1, . . . , LOC3, LOC11, . . . , LOC13 
               
               
                 Memory unit 
                 MEM 
               
               
                 Medical device 
                 MG, MG1, MG2 
               
               
                 Network interface 
                 NESR, NESM, NESR1, NESR2, NES 
               
               
                 Data network 
                 NW1 
               
               
                 Processing unit 
                 P 
               
               
                 Port identity 
                 PID, PID1, . . . , PID3, PID11, . . . , PID13 
               
               
                 Port 
                 PRO1, PRO2, P1, P2, P3, P11, P12, P13 
               
               
                 Patient 
                 PT1, PT2 
               
               
                 Patient data sets 
                 PTA, . . . , PTF 
               
               
                 Request messages 
                 REQ1, REQ2 
               
               
                 Data element 
                 REQD, REQD2 
               
               
                 Request message 
                 REQX 
               
               
                 Active network component 
                 RO, R1, R2 
               
               
                 Server 
                 SE1, SE 
               
               
                 Subnetwork 
                 TNW1, TNW 
               
               
                 Device 
                 V 
               
               
                 Assignment data set 
                 ZD