WO2006056566A2

WO2006056566A2 - Medical diagnostic and/or therapeutic system and method for operating the same

Info

Publication number: WO2006056566A2
Application number: PCT/EP2005/056125
Authority: WO
Inventors: Wolfgang Streubel
Original assignee: Siemens Aktiengesellschaft
Priority date: 2004-11-25
Filing date: 2005-11-21
Publication date: 2006-06-01
Also published as: DE102004057002A1; WO2006056566A3

Abstract

The invention relates to a medical diagnostic and/or therapeutic system and to a method for operating the same. Said system is characterized in that available protective devices (1-11, 22) are provided with signaling modules (6.1 - 11.1, 22.1) and control lines (19) are connected to a higher-order central control system (14) which immediately stores activation of a protective device (1-11, 22) in a logfile and signals this event to a service station via a connection to a communications network (21).

Description

description

Medical diagnostic and / or therapy system and method for its operation

The invention relates to a medical diagnostic and / or therapy system having a plurality of electrically-powered subsystems which switch at least one electrical protection device comprise at least one circuit, and said at least one circuit of the subsystem and ge ^¬ optionally the circuit subordinate subsystems current ^¬ los can , Furthermore, the invention relates to a method for the electrical protection of such a medical diagnostic and / or therapy system.

In medical diagnostic and / or therapy systems, it is generally known to provide these in the electrical supply with protective devices. For example have be¬ known CT systems on the safety devices, which are located in a locally separate power distribution box and in the event of a fault, for example in a short circuit occurring defects ^¬ th of an overcurrent or a fault current, the system in a safe, ie electroless, transfer state. In such a case, the service technician must first determine on site which protective device has triggered. This results in long search times and it is not possible for the service technician to determine in advance which replacement components to take to the customer.

It is therefore an object of the invention to provide a medical Diagno ^¬ se- and / or therapy system imagine having a ver¬ improved service situation.

The object of the invention is achieved by the features of the independent patent claims, advantageous developments are set forth in the subclaims. The inventor has recognized that an improvement in the service ^¬ situation can be reached in a medical diagnostic and / or Thera¬ piesystem when the possibility is opened, reindeer, the activation of a protective device for logging and this protocol then the service technician with fault indication for This can be done automatically, for example, by an e-mail, an SMS, by an automatic fax or similar data transmission mechanisms.

Accordingly, the inventor proposes the per se known medi ^¬ zinische diagnostic and / or therapy system, which has a plurality of electrically powered subsystems, each containing at least one electrical protection device for at least one circuit and these at least one circuit of the subsystem and optionally the Strom ^¬ circle subordinate subsystems can de-energize, to improve to the effect that the protection devices have reporting modules and control connections to a higher-level central control system, which stores the activation of a protection device immediately in a log file, the control system Anbin ^¬ tion to a communication network.

Preferably, the control device is additionally connected to an uninterruptible power supply.

This measure ensures that the activation or response is documented a protective device in each case in a log file so that remains vice during the subsequent Ser ^¬ recognizable sequence in which the Schutzvor¬ triggered directions. This makes it much easier for the service to find the cause of the fault behavior of the system.

It is advantageous if the protective devices are connected to the control device via a data bus. This data bus may be, for example, a standard CAN bus or CANopen bus. Such buses are known for example in automotive engineering and Queen ^¬ NEN here advantageously be integrated. In this way, it is possible to ^resort to components known per se from motor vehicle technology. Basically, a variety of different bus systems and bus topographies can be used.

Furthermore, it is advantageous if the log file contains a time stamp of the activations of the protection device.

As a result of this measure, the precise time behavior during the triggering of the protective devices can be reconstructed, which in turn makes possible an improved determination of the cause. A further improvement is achieved by logging in the log file additional sensor information from the monitored system, preferably at the time the protection devices are triggered. If the Ser¬ vice such information is made available, it is much easier possible functions, for example, by additional temperature information or power consumption Informa ^¬, the cause of the occurrence of an error to the fin ^¬.

A further improvement of the system is achieved by the fact that the central control system not only receives information about the status of the protective devices, but can additionally trigger the protective devices in a targeted manner. In particular, by the use of a bus system, the control of the protective devices is much easier. The central control system can now selectively take necessary measures when triggering a protective device in order to prevent damage to the patient or the entire system. This can be done, for example, by immediately switching off any existing radiation devices, as present in a computer tomography system or a medical radiation therapy system, from the central control system. In the case of a tomographic system, especially a Compu ^¬ tomography device, or a radiation therapy system can, the power supply of the overall system in a Haupt¬ strand have at least up one of the following protective devices: overvoltage protection device, the differential / current detection error, network monitoring, main switch, isolation transformer with temperature monitoring.

The overall system preferably has at least one of the following subsystems with their own circuits and their own

Safety devices: at least one cooling system, mindes¬ least one generator, at least one processing unit with at least ^¬ least an upstream supply uninterruptible Stromver¬, a patient bed, a stationary part of a gantry and a rotating part of a gantry.

Moreover, it may be advantageous if the main switch has a tripping ^module which can be triggered by the control system. Correspondingly, the subsystems can each have a release module which can be triggered jointly by the service personnel.

A further improvement of the medical diagnosis and / or therapy system can be achieved in that the control system has an application to an IP-based data network, in particular the Internet or an intranet. Here ^¬ through it is particularly easy for the service technician to In¬ mation about the error behavior of the system to get without having to work even locally to the system. This can be clarified in advance of a repair ^{measure ¬} who the replacement part must be taken to the customer in order to carry out a quick repair can.

In accordance with the underlying idea of the invention, the inventor also proposes a method for the electrical protection of a medical diagnosis and / or therapy system, wherein when a protective device is triggered, this event reports to the central control system. trollsystem deposited the event as a log file in a nichtflüchti ^¬ gen memory and automatically the content of the log file is at least partially passed on to a service facility weiter¬.

The control system should also store a time stamp when the release of a protection device is triggered.

In the case of a CT device or radiotherapy device, the control system should trigger at least one of the protective devices of the diagnosis and / or therapy system, trigger the differential / fault current detection in the main power supply line and / or the main switch and / or the temperature monitor of the isolating transformer and / or the unter¬ uninterruptible power supply unit of the at least one Rechen¬ and / or the subsystems completely and in a pre give ^¬ NEN sequence, preferably at predetermined time intervals, shutdown of the difference / residual current detection to the isolation transformer.

Furthermore, the control system of the diagnostic and / or therapy system can trigger one of the protections for the subsystems cooling system, generator, a Patientlie-, stationary part of the gantry and rotating part of the

Gantry only switch off the radiation mode. Hier¬ through is achieved that even lung operation when turning off the Strah¬, systems due to an error in the associated sub ^¬, although further evaluation activities that usually require only the function of the computing units, fortge¬ leads can be. Furthermore, it is proposed that the control system maintain complete operation even in the event of overvoltage protection or grid monitoring being triggered.

Preferably, the control system is operated so that it automatically in the event of triggering one of the guards at least partially forwards the content of the log file to a service ^{¬ device} .

In a particularly comfortable variant of the method is also proposed that the control system on the basis of Auslö¬ sereihenfolge of protective devices, the cause of the error that occurred up ^¬ analyzed and the users of the system provides. However, there is also the possibility that the control system the contents of the log file, at least partially, on an IP address access limited to a ^¬ view, preferably, provides for a service technicians.

Additional features and advantages of the invention will become apparent from the following description of a preferred Ausfüh¬ insurance example with reference to the drawings, in which case only the Merkma ^¬ le necessary for understanding the invention are shown.

The invention is explained below with reference to the single figure 1, which shows a block diagram of a preferred Ausführungsbei ^¬ game closer. The following reference numerals are used: 1 overvoltage protection; 1.1 reporting module for the overvoltage protection; 2 differential / fault current detection for the main power supply line; 2.1 message module for differential / fault current detection; 3 network monitoring; 3.1 reporting module for network monitoring; 4 main ^{scarf ¬} ter the CT system; 4.1 signaling module for the main switch of the CT system; 4.2 tripping module for the main switch; 5 separating transformer; 5.1 signaling module for the isolating transformer; 6 cooling system; 6.1

Reporting module for the cooling system; 6.2 tripping module for the cooling ^¬ system; 7 stationary generator; 7.1 reporting module for the sta¬ tionary generator; 7.2 tripping module for the stationary Ge nerator; 8 uninterruptible power supply; 8.1 reporting module for the uninterruptible power supply; 9 patients'bed; 9.1 reporting module for the patient couch; 9.2 trigger ^module for the patient couch; 10 stationary part of the gantry; 10.1 reporting module for the stationary part of the gantry; 10.2 Trigger module for the gantry; 11 rotating part of the gantry; 11.1 signaling module for the rotating part of the gantry; 12 calculating unit; 13 uninterruptible power supply for the control system; 14 control system; 15 main power supply line; 16 power supply line to subsystems without patient contact; 17 power supply line to subsystems with patient contact; 18 power supply of the control system; 19 CAN bus; 20 detector loop for difference / fault current detection; 21 Internet; 22 differential / fault current detection of the isolating transformer; 22.1 signaling module for differential / fault current detection on the isolating transformer; 23 Detector loop for differential / fault current detection on the isolating transformer.

FIG. 1 shows a block diagram of a CT system according to the invention. The power supply line 15 of the CT system initially leads to overvoltage protection 1, by which the system is protected from the effect of suddenly occurring overvoltage, as may occur, for example, in the event of a lightning strike. Subsequently, a detection of differential currents by the differential / fault current detection 2 by means of detector loops 20. Here, the incoming and outgoing current flow is measured, which must be zero in total and otherwise provides an indication of a fault current. This is followed by a device 3 for network monitoring, by means of which the correct connection of the individual ^phases and the level of the alternating voltage are monitored. Following this, the main switch 4 of the CT system, by means of which the CT system is put into operation, is arranged in the power supply line 15.

Circuit technology behind the main switch 4, followed by the current branch 16, with which the subsystems are supplied, which have no direct patient contact. In the present example, these are the cooling system 6, the stationary generator 7 and the computing units 12 with the upstream uninterruptible power supply 8. Also downstream of the main switch 4 is followed by the separation ^¬ transformer 5, which causes a separation between the protection subsystems to the patient directly come into contact Kgs ^¬ NEN. These subsystems patient bed 9 and gantry 10 and 11 are supplied via the power supply line 17 from the isolating transformer 5 from. In addition, detection of differential currents by the differential / fault current detector 22 with the aid of a detector loop 23 takes place at the isolating transformer. Here, too, the incoming and outgoing current flow is measured, which must be zero in the sum and otherwise an indication of the presence of a fault current supplies.

In the block diagram shown here, representative of the individual subsystems whose protection devices themselves are represented.

According to the invention has here in block diagram Darge ^¬ presented CT system via a control system 14 which xl via a CAN bus 19 with a plurality of alarm modules communicates supply its own uninterruptable power ^¬ 13, so that even with the failure of the Hauptstrom¬ supply at least over a certain period of time, the operation of the control system 14 can be continued. The CAN bus 19 is looped through in a manner known per se by the individual connected signaling modules. In the case of triggering a protection device assigned to the signaling module, a message is sent to the control system 14 immediately via the CAN bus. The control system 14 transmits this Mel ^¬ dung or a correspondingly coded information in a log file that is stored immediately.

So was is one of the protective devices 1 to 11 or 22 solved aus¬, it can be easily recognized retrospectively on the log file in which protection device and therefore which subsystem or event location for the failure to ^¬ responsible. In addition, a time stamp can also be added to the message, so that subsequently also the Sequence and the time interval of the individual trigger ^¬ events can be detected.

In the illustrated block diagram of Figure 1, the central control system 14 also has a connection to the In¬ ternet 21 so that a person responsible for the system maintenance ^¬ company or a competent service engineer easily Ein¬ view in the stored log file can remove it. Selbstver ^¬ is protected NEN such inspection by the corresponding safety measures against unauthorized Perso¬ understandable. This can be done for example by a password ^¬ query. Instead of the connection to the Internet shown here, a connection to the intranet within the institute can also be selected, so that if necessary an in-house technician can access the log file via a corresponding IP address, or via an e-mail or a similar data transmission method is informed.

In the illustrated particular embodiment of the main switch 4, the safety devices for the Kühlsys¬ system 6, the stationary generator 7, the patient support 9 and the gantry 10 and 11 remotely controllable via an additional triggering ^¬ module x.2 that enable the control system 14 have to selectively realize the triggering of the complete protection devices in parallel. In addition, it is possible for the control system to effect predefined switching states of the system as a function of the reported protective devices triggered via the CAN bus. For example, the CT system is completely shut down when the control system 14 receives information about the tripping from the signaling modules 2.1, 4.1, 5.1, 8.1 or 22.1. Contrast is adjusted only Strahlungsbe¬ drive, make the safety of the patient to be granted ^¬ when the control system 14 is a message about a triggering of the trigger modules in 6.1, 7.1, 9.1, 10.1 or 11.1 is obtained. In such a case, the operation can be continued Re¬ the unit area, so that evaluations of ^¬ be already existing CT data sets are possible. Does the control system 14 receive a message from the reporting modules 1.1 and 3.1? fertil, only a message is sent to the service technician ker.

In the present invention, it is also, when transmitted via the bus system 19, additional information relating to the Betriebszu ^¬ prior system or the state of individual components to the control system fourteenth Further, it is also within the scope of the invention, when the Kon¬ has troll system 14 via an evaluation logic, which performs an error analysis on the basis of the reported triggering events and optionally sätzlichen to ^¬ sensor information and outputs a probable error or enters into the log file.

It is also within the scope of the invention if exclusively the signaling signals are transmitted via the CAN bus, wherein the switching signals or a switching voltage for triggering the triggering modules x.2 can take place via separate lines.

In addition, it should be noted that the individual protection devices, signaling modules and tripping modules illustrated here are usually accommodated in a common control cabinet.

It is understood that the abovementioned features of the invention can be used not only in the respectively specified combination but also in other combinations or in isolation, without departing from the scope of the invention.

Claims

claims

1. A medical diagnostic and / or therapy system having a plurality of electrically powered subsystems, each for at least comprise at least one electrical protection apparatus comprising a circuit and these Minim ^¬ able to switch an electric circuit of the subsystem without current tens, since you r ch ge ke nn zei chn et, that the protective devices (1-11, 22) have signaling modules (6.1-11.1, 22.1) and control connections (19) to a higher-level central control system (14), which activates a protective device (1-11 , 22) stores immediately in a log file, where ^¬ in the control system (14) has a connection to a communication network (21).

2. A medical diagnostic and / or therapy system, as you know that the central control system (14) ^¬ sen be Schlos to an uninterruptible power supply (13) according to the preceding Patent Claim 1 r ch ge ke nn ¬ zei chn et.

3. A medical diagnostic and / or therapy system of egg ^¬ nem of the preceding claims 1 to 2, since - du r ch ge k hen zei chn et that at least one of the protective devices (1-11, 22) via a data bus (19) is connected to the control device (14).

4. Medical diagnostic and / or therapy system according to the preceding patent claim 3, since you ch e n e e e ch e that the data bus (19) is a CAN bus.

5. A medical diagnostic and / or therapy system of egg ^¬ nem of the preceding claims 1 to 4, since - du r ch ge k hen zei chn et that the log file ei ^¬ NEN time stamp of the activation of the protection devices (1-11, 22).

6. Medical diagnostic and / or therapy system according to ei ^¬ nem of the preceding claims 1 to 5, since ^¬ you r ch ge kennzeic hn et that the log file Sen ^¬ sordaten from the system, preferably at the time of activations of the protective devices ( 1-11, 22), ent ^¬ holds.

7. The medical diagnostic and / or therapy system of egg ^¬ nem of the preceding claims 1 to 6, since - du r ch ge Flag with hn et that at least one of the protective devices (1-11, 22) from the central Kon ^¬ troll system (14) can be controlled by trip modules.

8. The medical diagnostic and / or therapy system of egg of the preceding claims 1 to 7 nem, since ^¬ r ch du ge Flag with hn et that there is a Tomogra ^¬ phiesystem, in particular a computer tomography - is device.

9. Medical diagnostic and / or therapy system according to ei ^¬ nem of the preceding claims 1 to 8, since ^¬ you r ch ge kennzeic hn et that it is a radiation ^¬ therapy system.

10. The medical diagnostic and / or therapy system of egg ^¬ nem of the preceding claims 8 to 9, as ^¬ du r ch ge Flag with hn et that the Stromversor ^¬ supply of the entire system in a main strand (15) at ^¬ least one of the following protective devices comprising: overvoltage protection device (1), differential / fault current detection (2), mains monitoring (3), main switch (4), isolating transformer with temperature monitoring (5).

11. Medical diagnostic and / or therapy system according to the preceding claim 10, since you rchge ^¬ kennzeic hn et that at least the following sub ^{¬ systems} , which are equipped with their own circuits and their own protection devices, at least one Cooling system (6), at least one generator (7), least mindes¬ a computing unit (12) having at least one under ^¬ uninterruptible power supply (8), a patient couch (9), a stationary part of a gantry (10) and a rotating part of a Gantry (11).

12. Medical diagnostic and / or therapy system according to ei ^¬ nem of the preceding claims 1 to 11, since ^¬ you r ch kenn zei chn et that the main switch (4) has a tripping module (4.2), which of the Kontrollsys ^¬ tem (14) can be triggered.

13. A medical diagnostic and / or therapy system of egg ^¬ nem of the preceding claims 1 to 12, since - r ch du ge k hen zei et chn that the sub-systems each comprise weils ^¬ a trigger module (6.2-10.2), the manually by Service for affected subsystems can be triggered together.

14. A medical diagnostic and / or therapy system of egg ^¬ nem of the preceding claims 1 to 13, as ^¬ du r ch ge k hen zei chn et that the Kommunikati ^¬ onsnetz an IP-based data network (21), in particular the Internet, or an intranet, is.

15. Method for the electrical protection of a medical diagnostic and / or therapy system according to one of the preceding claims 1 to 14, since it can be shown that when a protective device (1-11, 22) is triggered this event reports to the central control system (14), automatically the content of the log file at least partially device service is forwarded from the control system (14) of the event log file in a non-volatile SpeI ^¬ cher laid down and a.

16. Method according to the preceding claim 15, since it shows that the control System (14) when saving the triggering of a protection device (1-11, 22) also saves a time stamp.

17. Method according to one of the preceding claims 15 to 16, characterized in that the control system (14) displays the diagnosis and / or therapy system when triggering the differential / fault current detection (2) in the main power supply line (14). 15) and / or the main switch (4) and / or the temperature monitoring of

Separating transformers (5) or the uninterruptible Stromver¬ supply (8) of the at least one arithmetic unit (12) and / or differential / fault current detection (22) on the isolating transformer (5) the subsystems completely and in a predetermined order, preferably at predetermined intervals, shuts down.

18. Method according to one of the preceding claims 15 to 17, since it can be seen that the control system (14) in the diagnostic and / or therapy system when triggering one of the protective devices for the subsystems cooling system (6) , Generator (7), a Patientenlie ^¬ ge (9), stationary part of the gantry (10) and rotating part of the gantry (11) exclusively switches off the radiation mode.

19. A method according to any one of the preceding claims 15 to 18, as you r ch ge ke nn zei chn et, that the control system in the case of arrival of a message via the triggering of the overvoltage protection (1) or the network ^¬ monitoring (3) the full Maintains operation.

20. Method according to one of the preceding claims 15 to 19, since it shows that the control system (14) based on the triggering sequence of protective devices is the cause of the fault that has occurred analyzed and made available to the user of the system.

21. The method according to any one of the preceding claims 15 to 20, since you r ch nge zei chn et that the control system (14) the content of the log file at least partially on an IP address limited access to the view ^¬ provides ,