Interface for a medical device having an adaptive actuation sensor

Abstract

The present invention relates to an interface (1) for a medical device, in particular an extracorporeal blood treatment device, more preferably a dialysis device, comprising a display (3), preferably of the capacitive or mechanical type, for displaying a display and operating unit, and a base operating unit (4a, 4b, 4c) arranged next to the display, and at least one optical actuation sensor (5), which can be partially activated or deactivated, designed to detect user interaction, in particular contact, with the display and operating unit of the display (3) and the base operating unit (4a, 4b, 4c), which are arranged on the same plane.

Description

Technical Field

[0001] The present invention relates to an interface for a medical device, and more particularly to an extracorporeal blood treatment device or a dialysis device including a display for displaying a display operation unit and a base operation unit provided adjacent to the display.

Background Art

[0002] Medical devices, particularly extracorporeal blood treatment devices or dialysis devices, include a display device and an input unit (hereinafter also referred to as an interface) that output information and are required to be operated by a user. This interface is subject to various requirements and restrictions, particularly regarding operational safety and disinfection performance.

[0003] For example, there are medical devices that include a strip having various hardware push buttons under the monitor for safe operation of the device / important parts of the medical device. These buttons include, for example, a power button, an input button, a start / stop button for a blood pump, a confirmation button for an incoming call alarm, in addition to a plus button and a minus button. These keys / buttons must be protected from biological contamination and at the same time must be resistant to strong disinfectants. This can be achieved by selecting push buttons that already meet these requirements or by protecting them with appropriate disinfection films. For example, a front panel is provided in which push buttons arranged behind a sealed plastic film are used. The film is translucent at the position of the button so that the button can be highlighted by an integrated LED. Furthermore, such a device can be operated using a resistive touch panel. The latter is incorporated in the case and is also protected by a disinfection film. Leakage that occurs when the plastic film is attached may allow chemical and biological substances to reach behind the film and damage or interfere with the push button / touch screen.

[0004] In various competing products, for example, such solutions are utilized on the front panel. In addition to buttons, status LEDs are provided in other locations. The main operation panel of all devices is a (capacitive or resistive) touch display incorporated into the case. The touch function is directly connected to the display function.

[0005] A drawback of the built-in display function is that it can become incomplete when it is severely dirty. There is a tendency for liquid to accumulate and clog in the gap between the case and the display, which hinders cleaning and disinfection and may even cause display malfunctions in some cases. If there are defects in the display, these devices can only be operated via the aforementioned push buttons. As a result, display malfunctions are accompanied by complete deactivation of the touch function, leading to complex and inconvenient treatment completion for patients. Another drawback of the touch display is that in some cases, operation of the touch display with gloves is not detected.

[0006] It is also a drawback of previous devices that the push buttons are mechanical parts subject to mechanical wear. This also applies, mutatis mutandis, to the resistive touch function subject to physical pressure (by contact). The touch display may wear over time, and residual marks may occur during active use, resulting in touch recognition errors. Incorrect or careless operation of the buttons and / or touch display may damage the buttons and / or touch display, thus requiring complete replacement of the front panel. Furthermore, assembly or replacement of such a front panel or interface requires the use / attachment of multiple sub-assemblies (e.g., electromechanical sub-assemblies, LEDs, button cases, cover films, resistive touch function parts, and displays) during assembly, which is complex. Additionally, the electrical switches must be debounced on the hardware and / or software side. Debounced buttons are more expensive compared to others.

[0007] Furthermore, for example, DE 10 2016 112 886 A1 discloses providing a projection surface of a dialysis device that can be spotlighted and projected by a projector and includes an interaction part, and the interaction part is operable via two channels, for example, a first position detection system having an ultrasonic unit and contact sensor technology on the projection surface and a second position detection system having an infrared scan and a 3D camera. This system also presents a plurality of problems. For example, when the projector fails, the dialysis device may no longer be operable safely, so fail-safe is not ensured. Furthermore, the individual operating parts are exposed to wear and potential damage by the user. Furthermore, especially, the projector and its accessories create new edges and interfaces that are difficult to clean, disturbing the cleaning of the entire system.

Summary of the Invention

[0008] It is a fundamental object of the present invention to improve the state of the art or to eliminate the disadvantages of the state of the art. In particular, an interface for a medical device that is fail-safe and / or less susceptible to damage and / or easy to operate and / or easy to clean is provided.

[0009] The fundamental object of the present invention is achieved by an interface having the features of claim 1.

[0010] More precisely, the object of the invention is an interface for a medical device, in particular an extracorporeal blood treatment device or a dialysis device, comprising a display for displaying a display operation part, a base operation part provided adjacent to the display, and a user of the display operation part and the base operation part of the display, which are arranged in the same plane and are configured to be partially activated or deactivated / partially activated or deactivated Interaction and in particular an optical activation sensor or activation sensor technology designed to detect contact operations. That is, the activation sensor (also referred to as a sensor) is a user of the display operation part and the base operation part within the area InteractionDetect the detection of , and / or stop the detection of the user with the display operation unit and the base operation unit within the area. In other words, ignore Interaction in the specific area of the interface. The motion sensor monitors both the area of the display and the area adjacent to the display where the base operation unit is arranged, and (optionally) detects the user Interaction in the monitored area. Interaction As a result, by using a position sensor (as a contact part) combined with a typical display, in addition to mechanical loads, component failures or wear, and possible leaks due to faulty assemblies, the problem during disinfection of the monitor / interface is avoided, which is the basic idea of the present invention. The optical and optimally switchable position / motion sensor for smooth surfaces enables contact or proximity detection on any smooth surface without necessarily directly touching the latter.

[0011] In other words, the object is achieved by an interface having an optical motion sensor (sensor device) or optical contact / proximity sensor technology, and a number of operation units provided on and adjacent to the display (especially a display without contact sensor technology integrated on the display surface), which are optionally and preferably monitored independently of each other by the optical motion sensor to monitor specific areas or specific operation units according to the treatment or situation and detect their operations. Or, in other words, an optimal and pure optical motion sensor can prevent the activation of a specific optionally deactivated input surface or operation unit, or, on the other hand, can permit the activation of a specific optionally activated input surface or operation unit when necessary.

[0012]

[0013] Preferably, the interface includes a control unit that compares data from an optically actuated sensor and, if necessary, additionally provided sensors with information regarding the positions of the display and the base operation unit in order to evaluate or recognize the user's input. The position of the operation unit, particularly the base operation unit, can be stored in the memory of the control unit as fixed location data (position data / data regarding the fixed position of the operation unit on the medical device or interface). Alternatively, or additionally, the position of the display operation unit can be compared with the data of the display control when the user's actuation within the area of the display is detected by the optically actuated sensor. The possibility of partial activation and deactivation can also be controlled by the control unit, either by directly switching on and off parts of the optically actuated sensor / sensor technology (which is particularly power-saving) or by evaluating only parts of the data detected by the optically actuated sensor / sensor technology (which can enable more precise measurement / detection).

[0014] The optically actuated sensor can utilize any technology that is accurate and suitable enough for contact or proximity detection on a flat or planar detection surface. The sensor is particularly a non-contact functional sensor. This is useful when the sensor is formed as a separate part from the display and / or the operation unit (i.e., when the sensor is not integrated with the display and / or the operation unit). That is, the sensor preferably monitors the area directly in front of the display and the operation unit. The components of the sensor are preferably arranged adjacent to or in the vicinity of, or in other words, without overlapping with, the display and the operation unit / interface so that the user does not accidentally come into contact with the components of the sensor when operating the display and the operation unit. For example, the components of the sensor can be arranged on the side, and / or above, and / or below the display and the operation unit. Preferably, the components of the sensor, such as the light-emitting part and the dedicated light-receiving part, are arranged on the opposite side of the display and the operation unit.

[0015] The base operation unit can provide functional surfaces at the edge of the interface and around the display respectively. The functional surfaces can fulfill general operation functions, such as on / off switches (power buttons), input confirmation switches (enter buttons) and plus / minus switches, or the basic functions required for each medical device of this type. Taking a dialysis device as an example, this may be a start / stop switch for a blood pump and / or a confirmation switch for an incoming alarm (confirmation or switching off of the alarm). Further, for example, a small mouse pad or (quick) function switches / buttons may be provided for connecting or disconnecting a bypass, disconnecting the connection with the patient, or emptying the bicarbonate cartridge. The base operation unit can be arranged at almost all positions (near the display). For example, since the operation of the base operation unit is detected by an optical operation sensor, the fact that known push buttons can be omitted advantageously enables the assembly of fewer components and the replacement of fewer components in case of damage.

[0016] Instead of a touch display (capacitive or resistive) as used in the prior art, it is further advantageous that a typical display without a contact function (which requires no unnecessary pressure from the user and thus has less wear and less potential for damage) can be used. As a result, an inexpensive and robust display can be selected. In other words, by being able to use a typical display instead of a touch display, savings can be made with respect to the display (monitor). Further, operation with gloves, which is difficult for a touch display, is easily possible for the interface according to the invention. Thus, for greater robustness and defect recognition, the contact function and the display are separated.

[0017] As another advantage, when the display fails, the contact function remains active and presents operations that are not permitted without visual feedback, or the contact is completely deactivated and the operability of the electromechanical push part is restricted, thereby avoiding the problems in the above-mentioned known devices. Instead, according to the present invention, when the display fails, the contact / proximity function (contact function) provided by the optical activation sensor can be adapted to the current situation, more precisely, restricted to the functioning part of the interface, thereby continuously ensuring operability.

[0018] Thus, in summary, the present invention provides robust and fail-safe contact recognition by an optical activation sensor module / optical activation sensor that functions on all smooth surfaces.

[0019] Advantageous configurations are the subject of the dependent claims and will be described in detail below.

[0020] Preferably, the display operation unit or the display and the base operation unit can be optimally wired separately or in groups by partially activating or deactivating the optical activation sensor. In other words, the optical activation sensor that monitors the interface surface for user activation can fade out a specific sub-area of the interface, and in this way, the user's InteractionIt can be ignored. That is, different operation zones can be optimally switched between on and off across the entire surface of the monitor. Therefore, the possibility of misuse by the user can be reduced. For example, in the case of parameter input, the optical operation sensor can be deactivated in all areas except the fields necessary for input so that the user cannot continue to operate the device without inputting the parameters. Furthermore, specific operation parts can be added as needed, ensuring redundant safety. In this way, for example, even when one of the (three) monitor components (optical operation sensor, display, and capacitive proximity sensor to be described in detail below) fails, the operation function is guaranteed.

[0021] This is advantageous, for example, when the optical operation sensor is designed to be deactivatable in at least the area of the display or in the case of partial failure of the display in each sub - area. In this way, the user can be prevented from inputting to a display that no longer functions properly. That is, providing optimal activation and deactivation capabilities and / or the possibility of ignoring / deactivating specific parts of the area monitored by the optical operation sensor helps to ensure the interface function even if the display fails, enabling the medical device to still be operated safely.

[0022] Furthermore, the medical device can be designed to be operable only by the base operation part and operable without a display so that it can at least safely and preferably appropriately complete the current treatment. In this way, even if the display fails or has defects, the medical device is still fully operable to complete the treatment in a way that does not harm or interfere with the patient, or hardly harms or interferes with the patient, which is particularly advantageous.

[0023] Preferably, the optical activation sensor has a sensor panel / sensor plane / sensor surface parallel to the display, and a base operation unit that extends such that the detection surface spread by the activation sensor overlaps the display and the base operation unit, particularly covering the latter on the side of the display and the base operation unit facing the user. / The optical activation sensor is arranged parallel above the display and the base operation unit. In particular, the length of the sensor panel can correspond at least to the extension of the display and the base operation unit, and preferably can correspond to the entire length of the interface. More preferably, the sensor panel covers the entire interface.

[0024] For this purpose, the detection surface is checked for blocking by a plurality of sensors within the same module across the entire lower surface of the sensor module via a plurality of light emitters. For example, an infrared surface or detection surface provided / spread by an infrared emitter (as part of an optical activation sensor according to one configuration variant) can be used. When an object or finger blocks the surface, the module (optical activation sensor) determines the exact position, shape, and movement direction. These position data can then be interpreted and traced back to the registered function (contact recognition).

[0025] According to one aspect of the present invention, the base operation unit or the front panel unit is a two-dimensional marker, particularly a print or a sticker, on the case part of a medical device that does not have mechanical or electrical components by itself. In other words, the front panel unit can be realized by simple printing, particularly without additional (exposed) electronic components and / or mechanisms. Laser processing or etched markers are also conceivable. That is, the user InteractionMoreover, the base operation unit itself, which may be exposed to the influence of the environment such as disinfectants and bacteria, has substantially the same stability as the case part itself, and the protective film can be omitted. This is possible especially due to the fact that an optical operation sensor that simply requires a line of sight to it is provided to detect the operation of the base operation unit. Alternatively or additionally, this is made possible by the fact that capacitance proximity sensors are arranged behind the respective markers, as will be described in detail below. When the print or sticker forming the marker / base operation unit and / or its color wears out and can no longer be clearly recognized, it is advantageous if these prints or stickers are configured to be reproducible in a simple manner, especially without the need to replace the entire case part.

[0026] Furthermore, in parallel with the operation sensor or, especially when the same one fails, instead of the operation sensor, a capacitance proximity sensor that is operated or connected is preferably arranged behind the base operation unit. In other words, the front panel part can be extended by a capacitive contact surface as a redundant means to ensure extended operability in the event of a possible component failure.

[0027] The capacitance proximity sensor is based on, for example, the so-called CapSense technology ("capacitance sensing" / capacitance sensor technology) that can recognize proximity and contact without mechanical parts. For this purpose, one or more contact / push surfaces are provided on the printed circuit board and are appropriately wired so that a specific capacitance is adjusted thereon (the printed circuit board or at least one push surface). For this purpose, the push surface is divided into two or more parts, and the desired capacitance can be adjusted between these parts. When an object or a part of the body moves near the push surface, the capacitance between the parts changes. This change is recorded and interpreted by an appropriate microcontroller or a so-called CapSense-IC. In this way, it is possible to recognize key strokes up to movement patterns such as swipes, and even realize an operation unit similar to a mouse pad.

[0028] The advantage of the interface according to the invention is that no electromechanical subassembly is required for the key stroke (for the base operating unit). The simple integration (of the capacitive proximity sensors for the base operating unit / buttons) is usually provided on the existing front panel printed circuit board. The footprint and the matching controller on the PTC (printed circuit board) are required to integrate all capacitive operating units. Safe recognition of the key stroke (or key contact or approximation) is possible and mechanical debouncing is not required. The main functions can be easily extended via the controller used and adapted / assigned individually as required. An extension for the motion recognition of slide and rotational movements (small touch pad) may be provided (in addition to the simple actuation recognition).

[0029] A capacitive proximity sensor / CapSense element can function as an extra safety feature when there is a defect in the sensor module / optical actuation sensor. For example, using a CapSense mouse pad can ensure operability that, although somewhat limited, covers all (all substantial functions). If there is a defect in the display, the contact function of the sensor module / optical actuation sensor can be deactivated in this area (i.e., the area of the display), and if necessary, it can be fully controlled and completed through an auxiliary key at the edge of the monitor. Alternatively, or additionally, when the CapSense element / capacitive proximity sensor fails, operability can be continuously provided / guaranteed via the sensor module. The sensor surfaces of the auxiliary key and the mouse pad (base operation part) (i.e., part of the detection surface of the optical actuation sensor) can be optimally connected only when there is a defect in the display, and otherwise can be deactivated by the sensor module. Alternatively, the base operation part can be activated in parallel with the display operation part so that the user can determine how to preferably operate the medical device. Alternatively, or additionally, in the case of a failure of the optical actuation sensor, the medical device and the treatment performed thereby can be controlled via the capacitive proximity sensor. Furthermore, this is still possible even when the display also fails. In summary, the present invention provides multi-level redundancy by replacing display input and replacing optical position recognition.

[0030] Another aspect of the present invention relates to a preferably rigid safety shield provided so as to extend across the area of an interface including a display. Preferably, the safety shield is arranged / extended across the entire area of the interface, i.e., across the entire surface of the interface, and more preferably is fully arranged on the case part of the medical device where the interface is provided.

[0031] In other words, the (display) display can be attached behind a safety shield, particularly a plexiglass or glass shield. This is particularly advantageous when the safety shield is a plastic plate made of a rigid material. Since the safety shield is a rigid shield, it can be attached more easily and, in contrast to the films known in the state of the art, no creases or cracks will occur during assembly. Furthermore, the safety shield is more stable than the films known in the state of the art and, furthermore, in contrast to said films, is not exposed to the pressure or movement experienced by the film when the operating part covered by said film in the form of a mechanical push button is actuated, and is thus less susceptible to wear. Smooth / flat plastic material / glass can be properly disinfected. Furthermore, a plastic material resistant to strong disinfectants etc. can be selected. The safety shield serves to protect the display from damage and soiling by these disinfectants. If the safety shield also extends to the base operating part, it likewise prevents the respective prints or stickers from wearing out due to frequent contact by the user.

[0032] Furthermore, particularly when the safety shield completely covers the interface or the entire case part and the ends / when the safety shield is aligned with the periphery or edge of the case, there is no possibility of leakage, or the latter can at least be significantly avoided. That is, there are no attachment gaps or edges / cutouts / grooves / corners that would constitute a possible leak, and areas where, for example, liquid could penetrate and disinfection would be difficult. If necessary, furthermore, since the push surface is only the copper footprint behind a stable safety shield or plastic plate, wear of the push surface (base operating part and associated capacitive proximity sensor) can be prevented. In summary, it should be noted that the selection of the sensor technology of the present invention and Interaction makes it possible to provide a strong, easily attachable and easily disinfectable cover or protection for the display and / or the base operating part.

[0033] According to another advantageous aspect of the invention, at least one indicator device provides user feedback, in particular haptic and / or optical feedback, about the input made and / or the report of the medical device, in particular in the form of a vibration unit and / or an LED.

[0034] In other words, haptic feedback can be integrated via additional vibrations and / or optical signals. In this case, it is possible for small vibration cells to be arranged behind or next to a safety shield (glass or plastic plate), or for LEDs to be provided behind or next to the front panel section (base operating section) for optical feedback. In this way, in the event of a malfunction of the display, the user obtains feedback regarding the input made using the base operating section. For example, the state of the medical device that is ready to start the next treatment step can be indicated by a green LED, while an incorrect input can be indicated by a red LED and / or vibrations of the interface. Alternatively or additionally, a loudspeaker may be arranged as an indicator device.

[0035] Furthermore, the fundamental object of the invention is achieved by a medical device comprising the aforementioned interface, in particular an extracorporeal blood treatment device or a dialysis device.

[0036] In other words, the fundamental object of the present invention is achieved by using optical and adaptive actuation sensors that enable accurate positioning and recognition of the gestures and shapes of fingers or objects on any smooth surface, instead of the push buttons and touch displays provided in the front panels of state-of-the-art dialysis devices. The optical actuation sensors (sensor modules) ensure accurate detection for an optical and flat sensor surface and can utilize any current technology if optimal wiring is possible. The state of the art does not describe an optimal and variable contact sensor surface nor multi-stage redundancy in case of failure. The idea of the present invention lies in using an optical surface for contact detection that covers the entire monitor and enables optimal deactivation or activation for specific areas. If the display fails, the operating functions in the area of the display surface can be deactivated without affecting the front panel part at the end of the case or the extended operating field (i.e., the base operating part). Furthermore, the redundancy of the capacitive (base) operating part, although limited, is useful for ensuring sufficient operability of the machine in case the sensor module fails. In summary, if the display or the contact part fails, it is possible to avoid subsequent failures of the other components, and redundancy is ensured by the safety-related operating parts of the front panel (by IR and CapSense sensors). Such an optimal and redundant operating concept, applicable to any smooth surface without any mechanical influence, does not exist in the current state of the art.

[0037] Put another way, the present invention is based on a monitor concept (interface) that includes the above-described optical sensor module (optically actuated sensor) that covers the entire monitor front (complete interface). Any conventional display technology can be used as the display. According to the present invention, the front panel part arranged as an electromechanical operation button in a general dialysis device and optionally a further functional surface (i.e., the base operation part) are preferably printed as symbols on the monitor front (or the case part where the Internet / monitor concept is arranged) and recognized in the same way via the sensor module. In order to ensure operability in the event of a failure of the sensor module, the part can be backed by a capacitive touch sensor (CapSense technology) behind the printed surface. The attached sensor module can recognize the contact functions on the display surface and the surrounding operation parts printed and backed by CapSense, and can also execute / process them. By doing so, the contact functions can be switched on and off according to the different monitor areas. In this way, auxiliary keys or a mouse pad (i.e., the base operation part), or the contact functions of other displays (i.e., the display operation part) can be individually and optimally wired. A smooth and robust plastic or glass plate that is resistant to chemicals and easy to disinfect may be arranged over the entire front of the monitor.

[0038] Hereinafter, the present invention will be described using preferred embodiments. However, these embodiments are merely examples and are not intended to limit the protection scope of the present invention.

Brief Description of the Drawings

[0039]

Figure 1

Figure 2

Mode for Carrying Out the Invention

[0040] The interface 1 according to the present invention shown facing forward in FIG. 1 is arranged in the case part 2 of the dialysis apparatus, particularly on the front panel. The interface 1 includes a display 3 arranged to present treatment-specific information and an input surface or operation part. In the vicinity (directly adjacent) of the display 3, base operation parts 4a, 4b, 4c (hereinafter referred to as buttons) are shown. In this embodiment, these are, for example, a first button 4a arranged under the display 3 and operating basic functions such as switching on and off, confirmation response / input, a second button 4b arranged on the right side of the display 3 and functioning as a quick function button for functions such as "bypass", "disconnect from patient", "empty cartridge", etc., and a third button 4c arranged on the left side of the display 3 and functioning as a mouse pad. The buttons 4a, 4b, 4c are markers printed or adhered to the housing part 2 where the interface 1 is arranged, and the markers characterize an additional input surface for operating the dialysis apparatus.

[0041] Furthermore, in this embodiment described above, the sensor panel 5 is arranged adjacent to the display 3. The sensor panel 5 extends parallel to the edge of the display 3 and has a length corresponding to at least the length of the display 3 and the adjacent buttons 4c, 4b. That is, the sensor panel 5 extends over both the display 3 and the possible display operation portions shown thereon, and the buttons 4a, 4b, 4c are arranged on the side of the sensor panel 5 so that they can be detected by the sensor panel 5. The optical sensors, particularly infrared sensors and / or light emitters, arranged on one side of the sensor panel 5 are aligned in the direction of the display 3 and the buttons 4a, 4b, 4c, and spread the detection surface 6 parallel to the display 3 over both the display 3 and the buttons 4a, 4b, 4c. Thus, the sensor panel 5 can detect the position where this is done when the user touches one of the display operation portions of the display 3 or one of the buttons 4a, 4b, 4c when passing through the detection surface 6, that is, to operate the interface 3. Therefore, the control of the dialysis device can be executed by comparing the measurement data of the sensor panel 5 with the known or set positions of the display operation portion and the buttons 4a, 4b, 4c.

[0042] Figure 2 is a schematic cross-sectional view of the interface 1, illustrating its structure. As described above, the display 3 is arranged on or incorporated into the front side of the case portion 2. Under the display 3, the buttons 4a, 4b, 4c are adhered or printed on the case portion 2, but these are not visible from this perspective due to their two-dimensional configuration. Behind the buttons 4a, 4b, 4c, a capacitive contact sensor 7 that functions as a redundant sensor for detecting contact or operation of the buttons by the user is arranged in the case portion 2. Further, above the display 3 and under the buttons 4a, 4b, 4c, an indicator device, particularly a vibration portion and / or an LED, is arranged or incorporated into the case portion 2. These can provide tactile and / or optical feedback to the user in the case of specific inputs or reports.

[0043] The case part 2 including the interface 1 is preferably completely covered by a safety shield 9 made of plexiglass. The safety shield 9 prevents the display 3 and the buttons 4 from getting dirty, prevents the latter from being worn or damaged by user contact, strong disinfectants, etc., and further protects them from the application of excessive force. Such a safety shield 9 is stable and, in addition, can be easily and quickly attached and cleaned, especially since it completely covers the case part 2.

[0044] As described above, the sensor panel 5 is further arranged above the display 3 on the front surface of the safety shield 9 such that the detection field 6 is directly adjacent to and extends parallel to the safety shield 9 and extends beyond both the display 3 and the buttons 4a, 4b, 4c by means of an optical sensor / light emitter provided on the sensor panel 5.

[0045] In other words, the figure shows possible configuration variations of an optimal monitor concept. The display 3 and the operating parts 4a, 4b, 4c are printed on the monitor case 2 and realized as a CapSence element 7 behind the monitor case 2. The safety shield, in particular the plexiglass plate 9, is arranged over the entire front of the monitor to which the sensor module 5 is attached. The latter arranges an optical sensor surface 6 that can detect elements, as well as their movement and shape, on the front of the monitor when they obstruct the sensor surface 6. Tactile feedback is possible, for example, via a vibration part (indicator device) 8 behind the safety shield / plexiglass plate 9.

[0046] During normal operation, in this way, the entire front of the monitor can be operated via the optical sensor module 5. Auxiliary functions such as the mouse pad 4c or the quick function buttons 4b can be switched to inactive and ignored by the sensor surface 6. If there is a defect in the display, the contact function of the display surface 3 can be deactivated and the auxiliary keys 4a, 4b, 4c can be activated so that the patient's treatment can be completed in a safe and generally comfortable way. Therefore, the sensor surface 6 will only evaluate contacts outside the display area 3. Even if the sensor module 5 fails, the CapSense function can be activated, so the operation by the auxiliary keys 4a, 4b, 4c is still protected. This means that, similar to a laptop, the device can be easily transferred to a safe state via the mouse pad 4c without initiating an emergency measure. These contact surfaces 6 that can be optimally and redundantly wired are easy to clean and contribute to the development of a robust and innovative operating concept that can also be accurately operated by gloves or objects. List the items related to the technology described in this specification. (Item 1) An interface (1) for a medical device, particularly an extracorporeal blood treatment device, more preferably a dialysis device, comprising: A display (3), preferably a capacitive or mechanical display, for displaying a display operation unit; A base operation unit (4a, 4b, 4c) arranged adjacent to the display; An interface characterized by a user interaction, particularly contact detection, with respect to the display operation unit and the base operation unit (4a, 4b, 4c) of the display (3) arranged in the same plane, and being designed to be at least partially activatable or deactivatable, and being characterized by at least one optical operating sensor (5). (Item 2) The interface (1) according to item 1, characterized in that the display operation unit of the display (3) and the base operation unit (4a, 4b, 4c) can be optimally wired individually or in groups by the partial activation or deactivation of the optical operating sensor (5). (Item 3) The interface (1) according to any one of items 1 to 2, characterized in that the optical operating sensor (5) can be deactivated in the area of the display (3) or in each partial area when the display (3) fails at least partially. (Item 4) The interface (1) according to any one of items 1 to 3, characterized in that the base operation unit (4a, 4b, 4c) is designed to maintain the operation of the medical device without using the display (3) so that at least the current treatment can be completed safely and preferably as usual. (Item 5) The interface (1) according to any one of items 1 to 4, characterized in that the optical operating sensor (5) includes a sensor panel extending parallel to the display (5) and the base operation unit (4a, 4b, 4c) such that a detection surface (6) expanded by the operating sensor (5) overlaps the display (3) and the base operation unit (4a, 4b, 4c). (Item 6) The length of the sensor panel corresponds to at least the extension of the display (3) and the base operation parts (4a, 4b, 4c), and preferably corresponds to the overall length of the interface (1), characterized by the interface (1) according to any one of items 1 to 5. (Item 7) The base operation parts (4a, 4b, 4c) are two-dimensional markers, and in particular, are prints or stickers on the case part (2) of the medical device, characterized by the interface (1) according to any one of items 1 to 6. (Item 8) Particularly when the operation sensor (5) fails, the capacitance proximity sensor (7) that is operated in place of the operation sensor (5) or connected in parallel with the operation sensor (5) is arranged behind the base operation parts (4a, 4b, 4c), characterized by the interface (1) according to any one of items 1 to 7. (Item 9) A preferably rigid safety shield (9) is arranged, extending over the area of the interface (1) including the display (3), preferably over the entire interface (1), and in particular over the entire case part (2) of the medical device where the interface (1) is arranged, characterized by the interface (1) according to any one of items 1 to 8. (Item 10) At least one indicator device (8), in particular a vibration part and / or an LED, is arranged to provide feedback, in particular tactile and / or optical feedback, to the user via the input performed on the medical device and / or the report of the medical device, characterized by the interface (1) according to any one of items 1 to 9. (Item 11) A medical device comprising the interface (1) according to any one of items 1 to 10, in particular an extracorporeal blood treatment device or a dialysis device.

Explanation of Symbols

[0047] 1: Interface 2: Case Part / Front Panel 3: Display 4a, 4b, 4c: Base Operation Part / Button 5: Optical Actuation Sensor / Sensor Panel 6: Detection Surface 7: Capacitive Proximity Sensor 8: Indicator Device (Vibration Part / LED) 9: Safety Shield

Claims

1. An interface for a medical device, comprising a display for displaying a display operation unit, and a base operation unit disposed adjacent to the display, and at least one optical operation sensor designed to detect user contact with the display operation unit and the base operation unit disposed in the same plane, and arranged to ignore user contact in a partial area of the display by optimally switching on and off different operation zones, characterized by the at least one optical operation sensor being deactivated over the entire display or a failed part of the display when the display fails at least partially.

2. The interface according to claim 1, characterized in that an input by use of the base operation unit is input to the medical device to keep the medical device operable without using the display.

3. The interface according to claim 1 or 2, characterized in that the optical operation sensor includes a sensor panel extending parallel to the display and the base operation unit such that a detection surface provided by the optical operation sensor overlaps the display and the base operation unit.

4. The interface according to claim 3, characterized in that the length of the sensor panel corresponds to at least the lengths of the display and the base operation unit.

5. The interface according to any one of claims 1 to 4, characterized in that the base operation unit is a two-dimensional marker on a case part of the medical device.

6. The interface according to any one of claims 1 to 5, characterized in that a capacitive proximity sensor that is operated or connected in parallel with the optical operation sensor is disposed.

7. The interface according to any one of claims 1 to 6, characterized in that a rigid safety shield is arranged extending across the area of the interface including the display.

8. The interface according to claim 7, wherein the safety shield extends across the entire interface and / or completely extends over the case part of the medical device in which the interface is arranged.

9. The interface according to any one of claims 1 to 8, characterized in that at least one indicator device is arranged to provide feedback to the user via the input made to the medical device and / or the report of the medical device.

10. A medical device comprising the interface according to any one of claims 1 to 9.

11. The medical device according to claim 10, characterized in that the medical device is an extracorporeal blood treatment device or a dialysis device.

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