EP3742462B1 - Dispositif de commutation et appareil médical comprenant le dispositif de commutation - Google Patents

Dispositif de commutation et appareil médical comprenant le dispositif de commutation Download PDF

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Publication number
EP3742462B1
EP3742462B1 EP19175340.9A EP19175340A EP3742462B1 EP 3742462 B1 EP3742462 B1 EP 3742462B1 EP 19175340 A EP19175340 A EP 19175340A EP 3742462 B1 EP3742462 B1 EP 3742462B1
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EP
European Patent Office
Prior art keywords
switching device
actuators
switch
assigned
output channels
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EP19175340.9A
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German (de)
English (en)
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EP3742462A1 (fr
Inventor
Marcus Wildt
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Trumpf Medizin Systeme GmbH and Co KG
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Trumpf Medizin Systeme GmbH and Co KG
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot

Definitions

  • the invention relates to a switching device, a medical apparatus comprising the switching device, and a method for operating the switching device, in particular to a switching device, a medical apparatus comprising the switching device, and a method for operating the switching device proving a single fault condition safety.
  • Document US 2009/090610 A1 discloses a switching device comprising two actuators configured to actuate a respectively predefined action, four output channels to transmit a respective output signal for actuating the respectively predefined action, and six switch units respectively connected to one of the four output channels.
  • a first switch unit and a second switch unit are assigned to one of the two actuators, and the two actuators are configured to actuate the first and second switch units assigned to the respective actuator to change their switching state upon one actuating motion of the respective actuator.
  • the first and second switch units assigned to one of the two actuators are connected to different output channels, and the switching device is configured such that the output signal of a predefined output channel is determined by the switching states of the switch units assigned to different actuators and being connected to the predefined output channel.
  • the switching device further comprises an input channel and the output channels are configured as analog channels. The switch units connected to one of the output channels, depending on their switching states, provide different electric potentials with respect to the input channel as the output signal at the one of the output channels.
  • the object underlying the invention is to remedy the above-mentioned disadvantages and to provide a switching device for a medical apparatus, the switching device including a simple equipment and avoiding an increase of the number of output channels for a safe operation even in case of a single fault.
  • a switching device for a medical apparatus comprises at least two actuators configured to actuate a respectively predefined action of the medical apparatus, several output channels configured to transmit a respective output signal to the medical apparatus for actuating the respectively predefined action, and several switch units respectively connected to one of the several output channels, wherein a first switch unit and a second switch unit of the switch units are assigned to one of the at least two actuators, the at least two actuators are configured to actuate the first and second switch units assigned to a respective actuator of the two actuators to change their switching state upon one actuating motion of the respective actuator, and the first and second switch units assigned to one of the at least two actuators are connected to different output channels.
  • the switching device is configured such that the output signal of a predefined output channel of the output channels is determined by the switching states of the switch units assigned to different actuators of the two actuators and being connected to the predefined output channel.
  • the switch units assigned to different actuators are connected to one output channel, even though merely two output channels are used, switching states of four switch units can be detected so that a safe operation by avoiding an increase of the number of output channels can be achieved.
  • the at least two actuators with respectively assigned first and second switch units are provided in a predetermined number larger than two, and the output channels are provided in the predetermined number.
  • the switching device comprises an input channel, the output channels are configured as analog channels, and the switch units connected to one of the output channels, depending on their switching states, provide different electric potentials with respect to an input channel as the output signal at the one of the output channels.
  • analog output channel providing different electric potentials
  • a simple configuration of the switching device without an own controller is possible which reduces manufacturing costs and provides a flexibility of the use of the switching device.
  • an accordingly adapted evaluation unit of different medical apparatuses for actuating predefined actions of different kinds of medical apparatuses can be used collaborating with the same switch device.
  • the switching device is respectively provided with several serially connected resistors as potential dividers between the input channel and each of the output channels, wherein respectively two of the resistors have a junction therebetween, and the switch units are respectively connected to the input channel and to one of the junctions.
  • This configuration is a simple option for providing the different electric potentials without the need of a controller or costly components.
  • the switching device comprises a separation equipment configured to separate the switch units from each other.
  • the separation equipment comprises a barrier, and the first switch unit and the second switch unit assigned to one of the actuators are arranged such that the barrier is located between the first switch unit and the second switch unit respectively assigned to the one of the actuators.
  • the separation equipment comprising the barrier
  • a failure of several switch units due to the root failure impairing the function, e.g., upon an ingress of liquid, can be avoided since, e.g., the intruded liquid can be hindered to reach several of the switch units.
  • a mechanical damage of the switching device does not imperatively lead to a failure of more of the switch units due to a mechanical protection of the switch units by an appropriately formed separation barrier so that the safety is improved.
  • the first and second switch units assigned to one of the actuators are based on different switching principles.
  • one of the first and second switch units assigned to one of the actuators is configured as a normally open switch and the other one is configured as a normally closed switch.
  • This configuration enables a simple option for distinguishing a proper function of the switch units in case of several failures, e.g. sticking of contacts, which improves safety.
  • the first switch unit assigned to the one of the actuators upon operation of one of the actuators, is configured to increase an electric potential at one of the first output channels and the second switch unit assigned to the one of the actuators is configured to decrease the electric potential at another one of the output channels.
  • the output channels are provided with a respective additional connection point for providing an additional different signal at a respective output channel.
  • a further advantageous implementation of the switching device comprises a function-changing switch configured to provide a function-changing signal at a separate function-changing output channel to the medical apparatus.
  • the number of the predefined actions of the medical apparatus actuated by the switching devices can be doubled by providing merely one additional output channel.
  • a medical apparatus comprises the switching device and an evaluation unit configured to interpret the output signals of the output channels in order to actuate the respectively defined action of the medical apparatus.
  • a method comprising the steps: operating a predefined one of the actuators of the switching device, thereby, respectively switching one of the first switch units and one of the second switch units respectively assigned to the predefined one of the actuators to change the switching states of the switch units, and outputting, in a redundant manner by the switching device at different defined output channels, the output signals respectively determined by the switching states of the first switch unit and the second switch unit assigned to the predefined one of the actuators and by the switching states of further switch units assigned to another actuator and being connected to the defined output channels.
  • an operation of a respective one of the actuators can be determined redundantly by the switching states of two switch units. This can assist in determining the single fault condition. Moreover, by this method, even though merely a reduced number of output channels are used, switching states of at least twice as much as switch units can be detected so that a safe operation by using a reduced number of output channels can be achieved.
  • the output signals at one of the output channels respectively differ in an electric potential with respect to an input channel.
  • the operated actuator and, therefore, the actuated predefined function of the medial apparatus can be determined by the evaluation unit in an easy and reliable manner.
  • the method comprises the step: operating a function-changing switch, thereby providing a function-changing signal at a separate function-changing output channel.
  • the number of the predefined actions of the medical apparatus actuated by the switching devices can be doubled by providing merely one additional output channel.
  • Fig. 1 shows a medical apparatus 1 comprising a switching device 2 according to the invention connected to the medical apparatus by a cable 3.
  • the medical apparatus 1 is configured as an operating table and the switching device 2 is configured as a foot switch.
  • the medical apparatus 1 is configured as another kind of medical apparatus, such as an operating lamp, and the switching device is configured as, e.g., a remote control operated by hand connected to the medical device 1 by the cable.
  • the medical apparatus 1 further comprises an evaluation unit 4 configured to interpret output signals of output channels of the switching device 2 in order to actuate a respectively defined action of the medical apparatus 1.
  • the switching device 2 comprises three actuators 5.1, 5.2, 5.3 for actuating a respectively predefined action of the medical apparatus 1.
  • the switching device 2 comprises merely two, or more than three actuators 5.1, 5.2, 5.3.
  • the actuators 5.1, 5.2, 5.3 respectively actuate a Trendelenburg motion, a tilting motion around a longitudinal axis of a tabletop of the operating table, and a lifting motion for a height-adjustment of the tabletop.
  • the actuators 5 do not actuate all of these three motions but alternative or additional motions by means of a respective appropriate number of actuators 5.1, 5.2, 5.3.
  • the switching device 2 comprises several switch units 6.1', 6.1", 6.2', 6.2", 6.3', 6.3".
  • a first switch unit 6.1', 6.2', 6.3' and a second switch unit 6.1", 6.2", 6.3" of the several switch units 6.1', 6.1", 6.2', 6.2", 6.3', 6.3" are respectively assigned to one of the three actuators 5.1, 5.2, 5.3 and the three actuators 5.1, 5.2, 5.3 are configured to actuate the assigned first and second switch units 6.1', 6.1", 6.2', 6.2", 6.3', 6.3" upon one actuating motion of a respective actuator 5.1, 5.2, 5.3 of the three actuators 5.1, 5.2, 5.3 to change a switching state of the switch units 6.1', 6.1", 6.2', 6.2", 6.3', 6.3".
  • the first switch unit 6.1' and the second switch unit 6.1" are assigned to the actuator 5.1
  • the first switch unit 6.2' and the second switch unit 6.2" are assigned to the actuator 5.2
  • the first switch unit 6.3' and the second switch unit 6.3" are assigned to the actuator 5.3.
  • the first switch unit 6.1', 6.2', 6.3' and the second switch unit 6.1", 6.2", 6.3" assigned to one of the actuators 5.1, 5.2, 5.3 are based on different switching principles.
  • the switching principles are, on the one hand, e.g., represented by a switching principle of a mechanical switch, the contacts of which can be connected and disconnected by pressing and releasing a button acting to one of the contacts and, on the other hand, by a reed switch, the contacts of which are connected and disconnected by means of a magnet moved towards the reed switch and attracting one of the reeds of the reed switch.
  • Other switching principles e.g., inductive, capacitive, optical, are alternatively possible.
  • the first switch unit 6.1', 6.2', 6.3' is configured as a normally open switch and the second switch unit 6.1", 6.2", 6.3" is configured as a normally closed switch.
  • the first switch unit 6.1', 6.2', 6.3' is configured as a normally closed switch and the second switch unit 6.1", 6.2", 6.3" is configured as a normally open switch.
  • the switching device 2 further comprises a function-changing switch 8 configured to actuate a change of the motions of the medical apparatus 1.
  • the switching device 2 is provided with a separation equipment configured to respectively separate the first switch units 6.1', 6.2', 6.3' and the second switch units 6.1", 6.2", 6.3" assigned to one of the actuators 5.1, 5.2, 5.3 from each other.
  • the separation equipment comprises barriers 7 respectively being located between the first switch units 6.1', 6.2', 6.3' and the second switch units 6.1", 6.2", 6.3" respectively assigned to one of the actuators 5.1, 5.2, 5.3.
  • Fig. 2 shows a switching principle of the switching device 1 of Fig. 1 .
  • the switching device 1 comprises three output channels 9, 9', 9", configured to transmit a respective output signal to the medical apparatus 1 for actuating the respectively predefined action.
  • the first switch unit 6.1' assigned to the actuator 5.1 ( Fig. 1 ) and the second switch unit 6.3" assigned to the actuator 5.3 ( Fig. 1 ) provide output signals at the output channel 9, the first switch unit 6.2' assigned to the actuator 5.2 ( Fig. 1 ) and the second switch unit 6.1" assigned to the actuator 5.1 ( Fig. 1 ) provide output signals at the output channel 9', and the first switch unit 6.3' assigned to the actuator 5.3 ( Fig.
  • the switching device 1 is configured such that the output signal of a predefined output channel 9, 9', 9" of the output channels 9, 9', 9" is determined by the switching states of the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" assigned to different actuators 5.1, 5.2, 5.3 and being connected to the predefined output channel 9, 9', 9".
  • the output channels 9, 9', 9" are provided in the same number as the number of the actuators 5.1, 5.2, 5.3.
  • another quantity of output channels can be provided.
  • either merely one switch unit provides an output signal at anyone or several of the output channels.
  • more than two switch units respectively provide an output signal at any one or several of the output channels.
  • the output channels 9, 9', 9" are configured as analog channels, and the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" connected to one of the output channels 9, 9', 9", depending on their switching states, provide different electric potentials with respect to an input channel 10 as the output signal at the one of the output channels 9, 9', 9".
  • the switching device 1 is respectively provided with several serially connected resistors R1, R2, R3, R4, R1', R2', R3', R4', R1", R2", R3", R4" as potential dividers between the input channel 10 and each of the output channels 9, 9', 9" of the switching device 1, wherein two of the potential dividers R1, R2, R3, R1', R2', R3', R1", R2", R3" respectively have a junction therebetween.
  • the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" are respectively connected to the input channel 10 and to one of the junctions 11.
  • the resistors R1, R2, R3, R4, R1', R2', R3', R4', R1", R2", R3", R4" as the potential dividers are not respectively serially connected between the input channel 10 and each of the output channels 9, 9', 9" but the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" are respectively connected to the input channel 10 via one of the resistors R1, R2, R3, R4, R1', R2', R3', R4', R1", R2", R3", R4".
  • the output signal of each output channel 9, 9', 9" is an electric potential resulting from the switching states of all of the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" connected to the respective output channel 9, 9', 9".
  • the first switch units 6.1', 6.2', 6.3' and the second switch units, 6.1", 6.2", 6.3" assigned to one of the actuators 5.1, 5.2, 5.3 respectively have two states. In a non-operated state and in an operated state of the actuators 5.1, 5.2, 5.3, the respectively assigned first and second switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" have predefined switching states, which, in case of the switching device 1 comprising the potential dividers, result in a predefined electric potential at each output channel 9, 9', 9".
  • Each electric potential, which is not an exact value but a voltage range, provided by the output channels 9, 9', 9" is determined by a combination of switching states of the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3” connected to one of the output channels 9, 9', 9".
  • the current switching state can be determined.
  • the operated actuator 5.1, 5.2, 5.3 and, therefore, a desired function of the medical apparatus 1 can be determined. If the electric potential provided by one of the output channels 9, 9', 9" is not defined in the evaluation unit 4 or a change of the electric potential of several output channels 9, 9', 9" is not defined in the evaluation unit 4, a failure of the switching device 1 can be determined.
  • the resistance value of the respective resistors R1, R2, R3, R4, R1', R2', R3', R4', R1", R2", R3", R4" is to be set such that the voltage ranges caused by the different resistors R1, R2, R3, R4 at the output channel 9,and by the resistors R1', R2', R3', R4' at the output channel 9', and by the resistors R1", R2", R3", R4" at the output channel 9" do not overlap. Therefore, tolerances of the resistors R1, R2, R3, R4, R1', R2', R3', R4', R1", R2", R3", R4", contact tolerances of the electric contacts, and supply voltage tolerances have to be considered.
  • the assigned first switch unit 6.1', 6.2', 6.3' increases an electric potential at one of the output channels 9, 9', 9" and the second switch unit 6.1", 6.2", 6.3" decreases an electric potential at the other one of the output channels 9, 9', 9".
  • the assigned first switch unit 6.1', 6.2', 6.3' decreases an electric potential at one of the output channels 9, 9', 9" and the second switch unit 6.1", 6.2", 6.3" increases an electric potential at the other one of the output channels 9, 9', 9", or both of the first and second switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" can either increase or decrease the electric potential at the output channel 9, 9', 9".
  • the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3" do not provide different electric potentials at the respective output channel 9, 9', 9" but other output signals having different characteristics, e.g., a different frequency.
  • the output channels 9, 9', 9" are provided with a respective connection point 12 for providing an additional different signal at the respective output channel 9, 9', 9".
  • a respective connection point 12 for providing an additional different signal at the respective output channel 9, 9', 9" is provided.
  • the function-changing switch 8 is configured to provide the function-changing signal at a separate function-changing output channel 13. Alternatively, no function-changing signal is provided but a changed function of the operating table is performed using the switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3".
  • Fig. 3 shows a flowchart of a method according to the invention for operating the switching device 2.
  • step S1 the function-changing switch 8 is operated, thereby providing a function-changing signal at a separate function-changing output channel 13.
  • a second step S2 one of the actuators 5.1, 5.2, 5.3 of the switching device 1 is operated and, thereby, one of the first switch units 6.1', 6.2', 6.3' and one of the second switch units 6.1", 6.2", 6.3" assigned to the one of the actuators 5.1, 5.2, 5.3 are switched to change their switching states and, in a redundant manner by the switching device at different defined output channels 9, 9', 9", the output signals determined by the switching states of the first switch unit 6.1', 6.2', 6.3' and the second switch unit 6.1", 6.2", 6.3" assigned to the actuator 5.1, 5.2, 5.3 and by the switching states of further switch units 6.1', 6.2', 6.3', 6.1", 6.2", 6.3” assigned to another actuator 5.1, 5.2, 5.3 and being connected to the defined output channels 9, 9', 9" are output.
  • the output signals at one of the first and second output channels 9, 9', 9" respectively differ in an electric potential with respect to the input channel 10.
  • output signals having, e.g., a different frequency are output.

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Claims (10)

  1. Dispositif de commutation (2) pour un appareil médical (1), le dispositif de commutation (2) comprenant
    au moins deux actionneurs (5.1, 5.2, 5.3) configurés pour actionner une action prédéfinie correspondante de l'appareil médical (1),
    plusieurs canaux de sortie (9, 9', 9") configurés pour transmettre un signal de sortie respectif à l'appareil médical (1) pour actionner l'action prédéfinie correspondante,
    et
    plusieurs unités de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") respectivement connectées à l'un des canaux de sortie (9, 9', 9"),
    dans lequel
    une première unité de commutation (6.1', 6.2', 6.3') et une seconde unité de commutation (6.1", 6.2", 6.3") des unités de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") sont affectées à l'un des au moins deux actionneurs (5.1, 5.2, 5.3) et les au moins deux actionneurs (5.1, 5.2, 5.3) sont configurés pour actionner la première et la seconde unité de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") affectées à un actionneur respectif (5.1, 5.2, 5.3) des deux actionneurs (5.1, 5.2, 5.3) pour modifier leur état de commutation lors d'un mouvement d'actionnement de l'actionneur correspondant (5.1, 5.2, 5.3),
    la première et la seconde unité de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") affectées à l'un des au moins deux actionneurs (5.1, 5.2, 5.3) sont connectées à différents canaux de sortie (9, 9', 9"), et
    le dispositif de commutation (2) est configuré de sorte que le signal de sortie d'un canal de sortie prédéfini (9, 9', 9") des canaux de sortie (9, 9', 9") soit déterminé par les
    états de commutation des unités de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") affectés à différents actionneurs (5.1, 5.2, 5.3) des deux actionneurs (5.1, 5.2, 5.3) et connectés au canal de sortie prédéfini (9, 9', 9"), dans lequel
    le dispositif de commutation comprend un canal d'entrée (10),
    les canaux de sortie (9, 9', 9") sont configurés en tant que canaux analogiques, et
    les unités de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") connectées à l'un des canaux de sortie (9, 9', 9"), selon leur état de commutation, fournissent différents potentiels électriques par rapport au canal d'entrée (10) comme signal de sortie sur l'un des canaux de sortie (9, 9', 9"),
    caractérisé en ce que
    le dispositif de commutation (2) est respectivement fourni avec plusieurs résistances connectées en série (R1, R2, R3, R4, R1, R2', R3', R4', R1", R2", R3", R4") comme séparateurs de potentiel entre le canal d'entrée (10) et chacun des canaux de sortie (9, 9', 9"), dans lequel respectivement deux des résistances (R1, R2, R3, R4, R1', R2', R3', R4', R1", R2", R3", R4") ont une jonction (11) entre elles, et
    les unités de commutation (6.1', 6.2', 6.3', 6.1", 6.2", 6.3") sont respectivement connectées au canal d'entrée (10) et à l'une des jonctions (11).
  2. Dispositif de commutation (2) selon la revendication 1, dans lequel
    les au moins deux actionneurs (5.1, 5.2, 5.3) avec les première et seconde unités de commutation respectivement affectées (6.1, 6.2', 6.3', 6.1", 6.2", 6.3") sont fournis sous la forme d'un nombre prédéterminé supérieur à deux, et
    les canaux de sortie (9, 9', 9") sont fournis dans le nombre prédéterminé.
  3. Dispositif de commutation (2) selon la revendication 1 ou 2, dans lequel
    le dispositif de commutation (2) comprend un équipement de séparation configuré pour séparer les unités de commutation (6.1, 6.2', 6.3', 6.1", 6.2", 6.3") l'une de l'autre.
  4. Dispositif de commutation (2) selon la revendication 3, dans lequel
    l'équipement de séparation comprend une barrière (7), et
    la première unité de commutation (6.1, 6.2', 6.3') et la seconde unité de commutation (6.1", 6.2", 6.3") affectées à l'un des actionneurs (5.1, 5.2, 5.3) sont agencées de manière à ce que la barrière (7) soit située entre la première unité de commutation (6.1, 6.2', 6.3') et la seconde unité de commutation (6.1", 6.2", 6.3") respectivement affectées à l'un des actionneurs (5.1, 5.2, 5.3).
  5. Dispositif de commutation (2) selon l'une quelconque des revendications précédentes, dans lequel
    la première et la seconde unité de commutation (6.1, 6.2', 6.3', 6.1", 6.2", 6.3") attribuées à l'un des actionneurs (5.1, 5.2, 5.3) sont basées sur différents principes de commutation.
  6. Dispositif de commutation (2) selon l'une quelconque des revendications précédentes, dans lequel
    l'une des première et seconde unités de commutation (6.1, 6.2', 6.3', 6.1", 6.2", 6.3") affectée à l'un des actionneurs (5.1, 5.2, 5.3) est configurée comme un commutateur normalement ouvert et l'autre comme un commutateur normalement fermé.
  7. Dispositif de commutation (2) selon la revendication 6, dans lequel
    lors du fonctionnement de l'un des actionneurs (5.1, 5.2, 5.3), la première unité de commutation (6.1, 6.2', 6.3') affectée à l'un des actionneurs (5.1, 5.2, 5.3) est configurée pour augmenter un potentiel électrique au niveau de l'un des canaux de sortie (9, 9', 9") et la seconde unité de commutation (6.1", 6.2", 6.3") affectée à l'un des actionneurs (5.1, 5.2, 5.3) est configurée pour réduire le potentiel électrique à un autre des canaux de sortie (9, 9', 9").
  8. Dispositif de commutation (2) selon l'une quelconque des revendications précédentes, dans lequel
    les canaux de sortie (9, 9', 9") sont fournis avec un point de connexion respectif (12) pour fournir un signal différent supplémentaire à un canal de sortie respectif (9, 9', 9").
  9. Dispositif de commutation (2) selon l'une quelconque des revendications précédentes, comprenant en outre
    un commutateur de changement de fonction (8) configuré pour fournir un signal de changement de fonction sur un canal de sortie de changement de fonction séparé (13) à l'appareil médical (1).
  10. Appareil médical (1) comprenant
    un dispositif de commutation (2) de l'une des revendications précédentes, et
    une unité d'évaluation (4) configurée pour interpréter les signaux de sortie des canaux de sortie (9, 9', 9") afin d'actionner l'action définie respectivement de l'appareil médical (1).
EP19175340.9A 2019-05-20 2019-05-20 Dispositif de commutation et appareil médical comprenant le dispositif de commutation Active EP3742462B1 (fr)

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EP3742462B1 true EP3742462B1 (fr) 2021-11-17

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214360A (en) * 1992-03-13 1993-05-25 Den-Tal-Ez, Inc. Programmable adjustable chair for medical and dental applications
DE102005060810A1 (de) * 2005-12-20 2007-07-12 Wabco Gmbh Taster zum Betätigen einer elektro-pneumatischen Handbremse (EPH)

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