DE202011108124U1 - Device carrier system with several electrical devices and equipment carrier - Google Patents

Abstract

Mobile medical device system with a trolley and several, interchangeable electrical devices, each having a housing which is releasably and electrically conductive attached to the equipment cart so that equipment trolleys and electrical equipment via the respective releasable, electrically conductive attachment have a common ground potential.

Description

The invention relates to a mobile device system with a plurality of electrical devices and a mobile equipment carrier (equipment cart) for electrical equipment, in particular medical electrical equipment.

Such a mobile equipment carrier may be, for example, a trolley for modular endoscopy systems.

Are known car or shelf-shaped equipment carrier in which the devices are parked on shelves.

The invention has for its object to provide an improved equipment carrier

According to the invention this object is achieved by a mobile device system with a trolley and several, interchangeable electrical equipment, of which the devices each have their own housing that is detachably and electrically conductive attached to the trolley so that trolley and electrical equipment on the respective solvable , electrically conductive attachment have a common ground potential.

Such a device system has the advantage that the devices are securely attached to the trolley and can not slip and at the same time a common ground potential is created, which increases the electrical safety for the user and the reliability. This eliminates in particular the otherwise necessary production of a uniform potential with the help of equipotential bonding cables, which are unwieldy, cause costs and represent an additional possible source of error.

Preferably, the trolley and attached to him electrical equipment in conjunction with each other an air duct for ventilation of the device, the air duct has an air duct, which is enclosed by a rear wall of the trolley, removable panels and backs of the electrical equipment. As the back of the electrical equipment facing away from a respective front panel sides of a housing of a respective electrical device are called. In this way, a defined air flow, which ensures that each unit is supplied to the extent necessary with fresh, especially cool supply air, because the exhaust air and / or the supply air of the devices is discharged via a common air flow to the environment or from the environment is sucked. No electrical device sucks as incoming air the warm exhaust air of an electrical device located in its vicinity.

According to a further preferred embodiment, the devices are arranged one above the other on the equipment cart and between the individual devices are sealing elements, for. B. arranged in the form of elastic intermediate layers, the otherwise remaining spaces between adjacent electrical appliances dust-tight seal and ensure a defined air flow along the air duct.

In addition, a device system is preferred in which the equipment cart has sockets for an electrical power supply of the electrical equipment and the connection sockets are connected to a control unit which is configured to supply individual sockets or groups of sockets according to predetermined priorities with a supply voltage such that Switching on devices connected to individual connection sockets after pressing a central switch-on element individually or in groups from a highest to a lowest priority. In this way, the electrical devices can be switched on by a single switch operation in a predetermined temporal or functional order.

In this regard, it is preferable if the control unit is further configured to check before or during the supply of a connection socket or a group of connection sockets with supply voltage, if there is a fault in which predefined parameters are exceeded or not reached. In such a case, the control unit shuts off the connection sockets individually or in groups, with the control unit starting with the connection socket or group of lowest priority connection sockets and continuing the shutdown until a prescribed operating state has been reached. Such a device system avoids the problem that in case of device or system errors such as overload or the like under certain circumstances, the entire system is turned off, so that z. B. patient safety is not guaranteed during surgery. In addition, sensitive components, such as computers for display or documentation due to uncontrolled shutdowns, could become undefined, which could delay recovery of the operational state after debugging. Such problems are avoided by the preferred embodiment of the device system according to the invention. In addition, the device system according to the invention ensures that prescribed switch-on and switch-off sequences are maintained in order to put individual components in a defined operating state or to keep them in such.

Furthermore, in such a device system, it is preferred if the control unit is configured such that, after the end or after a reset of a detected fault, it switches on the connection sockets starting again with the respective next higher priority.

The connection sockets are preferably attached to a housing of the device system which contains the control unit and which has an operating front for the control unit, which has at least one central activation element. Preferably, the front panel also has a central status indicator which indicates the proper functioning of the individual devices and / or a reset switch (reset) for manual reset of a fault message generated by the control unit as a result of a detected malfunction.

The device system also preferably has an isolating transformer whose secondary winding is electrically connected to the connection sockets at least indirectly via one or more switching elements. Such a central isolating transformer ensures a desired electrical isolation between the mains power supply and the device power supply.

In addition, it is preferred if the device system also has a power supply unit for the uninterruptible power supply (UPS). Such a power supply unit includes, for example, a battery plus inverter to provide battery-powered in this way a mains voltage can be provided if the power supply network to which the device system is otherwise connected, no or insufficient mains voltage.

Thus, taking into account the preferred embodiment variants, a medical device system with a mobile equipment carrier (equipment cart) and various medical devices which are directly (or with individual, simple attachment elements (eg, angles)) and electrically conductively fixed in the equipment carrier ( without standing on individual shelves), so that a cabling of the devices with each other and with the device carrier can be omitted via equipotential bonding cable to produce a common ground potential.

The bleeding of the mounted devices takes place via a shaft at the back of the device carrier, which is formed by the mounted devices themselves, additional screens and the rear wall of the device carrier. Sealing elements between the devices ensure a defined airflow and seal the horizontal space between two devices dust-proof.

The device carrier is used to power the individual medical devices and includes a connection to the mains (power cable, input socket), an isolation transformer (with isolation monitor), (an uninterruptible power supply (UPS), a central control electronics and several sockets for powering the individual medical devices.

The connection sockets for the power supply are divided into several groups of different priorities. The control electronics switch on the connected devices after pressing a central power button in groups from the highest to the lowest priority. Before each additional group is connected, it is checked whether defined parameters such as the permissible connected load or the limit temperature of the central power supply (isolating transformer) are exceeded / not exceeded.

If the defined parameter limits are exceeded during the switch-on process or during operation, an error message is issued and the connection sockets are switched off again in groups starting with the lowest-priority group until again a prescribed operating state is reached.

If an error, for. As a device with too high power consumption, fixed and cleared the displayed error manually, the connection sockets are switched back on starting with the next higher priority. The tests described above under the switch-on procedure take place.

At a arranged in the upper region of the device carrier housing, which may preferably also contain the central control and display elements and the control electronics, there are the groups of sockets, which in conjunction with the geometric or color grouping priorities and by the devices and equipment carrier back Well-formed shaft can be made a very clear and service-friendly wiring of the individual devices.

The invention will now be explained in more detail using an exemplary embodiment with reference to the figures. From the figures shows:

1 a partially sectioned schematic side view of a device system according to the invention;

2 a schematic block diagram of the electrical components of the device system according to the invention;

1 shows a trolley 10 with attached electrical appliances 12a . 12b . 12c . 12d and 12e , in which 12b and 12e are unvented devices.

The mobile equipment carrier 10 is as an equipment cart with wheels 14 educated. A car floor 16 of the equipment cart 10 Contains heavy electrical components that are central to all electrical appliances 12 of the device system are available, namely an isolation transformer with insulation guard and a power supply unit for the uninterruptible power supply (UPS). These components are not shown in the schematic drawing.

A back wall 18 of the equipment cart 10 forms together with the fixed, exchangeable devices and a panel 24 an air duct.

Two on the side of the equipment cart 10 arranged columns 20 carry the individual devices 12A to 12E , On the pillars are the individual electrical devices 12A to 12E attached. The attachment is preferably screwed and in each case an electrically conductive attachment. Also the columns 20 are electrically conductive and with the likewise conductive floor 16 of the equipment cart 10 electrically connected. In this way, the equipment cart and attached to him electrical equipment 12 a common ground potential.

The back wall 18 of the equipment cart 10 forms together with backs (in 1 on the right side of the respective electrical device) of the electrical devices 12A to 12F an air duct. So that the air duct is defined as a whole, are between the electrical devices 12 each sealing element 22 for unventilated devices and sealing elements 23 designed for ventilated equipment, which is otherwise between each adjacent electrical equipment 12 Completing the remaining space dust-tight. In 1 can also be seen that the sealing elements 23 are arranged so that they leave a respective Zuluftöffnung in a respective electrical device, so that the electrical equipment 12 each fresh fresh air from the environment can suck. The supply air openings are respectively arranged on the underside of the respective electrical device, which requires ventilation, to an operating front of the electrical equipment 12 (in 1 not to be disturbed on the left side). The air duct inside the electrical appliances 12 This is done in one direction, from the front panel of the electrical appliances 12 goes out and to the back of the electrical appliances 12 leads. On the back of the electrical appliances 12 appropriate exhaust air openings are provided, which are in the back wall 18 and the backs of electrical appliances 12 open defined air duct. The end plate 25 forms the conclusion of the ventilation.

2 shows the electrical components of the equipment cart 10 as well as the connected electrical devices 12 , The equipment cart 10 has a power connection 30 that with an isolation transformer 32 connected is. In this way, the isolation transformer provides 32 a galvanically isolated from the central power grid voltage for the individual devices 12 , the isolation guard 26 , the UPS 38 and a central control unit 34 , These are for the individual electrical devices 12 Connecting sockets provided by means of the central control unit 34 individually or in groups with the isolating transformer 32 or optionally with a power supply unit 38 for the uninterruptible power supply (UPS) can be connected.

The individual connection sockets of the device system are assigned individual or group-wise priorities which determine the order in which the connection sockets are to be supplied with mains voltage or are to be disconnected from the mains voltage. Thus, the priority of the connection sockets also determines in which order the electrical devices connected to a respective connection socket 12 be switched on or off. In this case, the activation or deactivation sequence within a group (eg the group with the priority 1) can be freely programmable. The central control unit 34 supplies the individual connection sockets in a chronological order with line voltage specified by the respective priority of the connection sockets. Likewise, in the case of power-off, the central controller shuts off the individual jacks again from the supply voltage in an order also dictated by the priorities. In each case, identical or different priorities can be provided for the switch-on process and the switch-off process.

For switching on or off all electrical devices 12 is a central switching element on a control and display unit 40 provided, which with the central control unit 34 connected is. This allows you to turn on or off electrical appliances 12 to effect in a given order by operating a single switch.

In addition, the central control unit 34 designed so that they constantly monitored compliance with predetermined operating parameters, such as current or voltage limits or temperatures of individual or all devices or the device system as a whole and in the case in which one or more parameters are outside predetermined ranges, detects a fault. In case of failure the central control unit will switch 34 the connection sockets in the order of their priority from the lowest priority to the highest priority and thus the electrical devices connected thereto successively from until a defined operating state within predetermined parameter limits is reached. As soon as this is the case and the error has been manually deleted, the central control unit switches the individual connection sockets and the electrical devices connected to them back in the order specified by the respective priorities.

In addition, the operating and display unit 40 a control for manually resetting a fault condition with which the control unit 34 is caused to turn on again switched off electrical appliances in the order given by the priorities.

LIST OF REFERENCE NUMBERS

10

trolley

12

electronical devices

14

bikes

16

car floor

18

rear wall

20

lateral columns

22

Sealing element (elastic intermediate layers for non-ventilated devices)

23

Sealing elements (elastic intermediate layers for ventilated devices)

24

cover

25

End plate

26

Insulation Guardian

30

mains connection

32

Isolation transformer

34

central control unit

38

Uninterruptible power supply unit (UPS)

40

Operating and display unit

Claims (9)

Mobile medical device system with a trolley and several, interchangeable electrical devices, each having a housing which is releasably and electrically conductive attached to the equipment cart so that equipment trolleys and electrical equipment via the respective releasable, electrically conductive attachment have a common ground potential. Device system according to claim 1, characterized in that parts of the equipment cart and attached to it electrical equipment in conjunction with each other form an air duct for venting the devices, wherein the air duct has an air duct, which faces away from a rear wall of the equipment cart and from a respective control front backs the electrical equipment is enclosed. Device system according to claim 2, characterized in that the devices are arranged one above the other and between individual devices sealing elements are arranged, which ensure a defined air flow along the air duct and close an otherwise remaining gap between adjacent devices dustproof. Device system according to one of claims 1 to 3, characterized in that the equipment cart has sockets for an electrical power supply of the electrical equipment, wherein the connection sockets are connected to a control unit which is configured, individual sockets or groups of sockets in accordance with predetermined priorities in such a way Supply voltage to ensure that switching on connected to individual sockets devices after pressing a central power on individually or in groups from the highest to the lowest priority. Device system according to claim 4, characterized in that the control unit is configured to check before supplying a connection socket or a group of sockets, if there is a fault in the predefined parameters exceeded or not reached and in such a case, the sockets individually or Deactivate in groups with the connection socket or group of connection sockets of lowest priority starting as long as again until a prescribed operating state is reached again. Device system according to claim 5, characterized in that the control unit is configured to turn on after the end and resetting a detected fault, the connection sockets again starting with the next higher priority. Device system according to one of claims 4 to 6, characterized in that the connection sockets are mounted on a housing which contains the control unit and which has an operating front for the control unit, which has at least one central activation element. Device system according to one of claims 4 to 7, characterized in that the equipment trolley carries an isolating transformer whose secondary winding is electrically connected at least indirectly via one or more switching elements with the connection sockets. Device system according to one of claims 4 to 7, characterized in that the Equipment cart carries an uninterruptible power supply unit.

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