Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
  • B65B55/02—Sterilising, e.g. of complete packages
  • B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
  • A61B90/90—Identification means for patients or instruments, e.g. tags
  • A61B90/98—Identification means for patients or instruments, e.g. tags using electromagnetic means, e.g. transponders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B50/00—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers
  • A61B50/30—Containers specially adapted for packaging, protecting, dispensing, collecting or disposing of surgical or diagnostic appliances or instruments
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
  • A61B90/06—Measuring instruments not otherwise provided for
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
  • A61L2/26—Accessories or devices or components used for biocidal treatment
  • A61L2/28—Devices for testing the effectiveness or completeness of sterilisation, e.g. indicators which change colour
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B57/00—Automatic control, checking, warning, or safety devices
  • B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
  • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
  • B65D7/14—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls of skeleton or like apertured construction, e.g. baskets or carriers formed of wire mesh, of interconnected bands, bars, or rods, or of perforated sheet metal
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
  • A61L2202/10—Apparatus features
  • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
  • A61L2202/10—Apparatus features
  • A61L2202/18—Aseptic storing means
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
  • A61L2202/10—Apparatus features
  • A61L2202/18—Aseptic storing means
  • A61L2202/182—Rigid packaging means
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
  • A61L2202/20—Targets to be treated
  • A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps

Definitions

• the present invention relates to a sterile container for sterilizable medical-technical goods, with a receiving space for the medical-technical goods and a data acquisition unit for acquiring parameter data of influencing variables acting on the sterile container. It also relates to a method for monitoring such a sterile container.
• Sterilizable medical-technical goods such as medical-technical instrument sets are usually repeatedly subjected to a usage cycle that includes sterilization, storage and use, for example in the context of an operating theater.
• a usage cycle that includes sterilization, storage and use, for example in the context of an operating theater.
• the actual sterilization must be monitored, i.e. it must be determined whether it was carried out successfully and how often it was sterilized.
• transports and storage must also be monitored to ensure, for example, that no (invisible or barely visible) damage has occurred to the goods during transport and / or that temperature limits were observed at all times during the storage of temperature-critical goods.
• Known systems and methods for monitoring / documenting sterile containers have a number of disadvantages.
• there is no complete monitoring of complete usage cycles / sterile goods cycles i.e. that both transport, storage and sterilization are not monitored and documented by means of a system / method.
• Another disadvantage is that there are no individual and, in particular, offline, complete data collections available on the transport, storage and sterilization of certain sterile containers or instrument sets.
• the monitoring is not specific to the container, i.e. it is assigned to a very specific container.
• a disadvantage associated with complete monitoring is also that no automatic detection of sterilization cycles and correct parameter curves (such as of pressure and / or temperature) is possible, and that no programmable parameter limit values or courses can be used.
• the present invention is based on the object of reducing the mentioned disadvantages of the prior art, in particular to enable complete, safe, simple, sterile container-specific and automatic monitoring of sterile containers such as sterile containers, sieve baskets or outer packaging during entire usage cycles, i.e. automatic monitoring Monitoring of transport, storage, sterilization, etc.
• a sterile container that is to say a sterile container for sterilizable medical-technical goods, with a receiving space for the medical-technical goods and a data acquisition unit for acquiring parameter data of influencing variables acting on the sterile container, the sterile container having an NFC module with at least one sensor for recording sterility-relevant and / or sterilization-relevant data and a data logger for recording and storing data from the sensor in a recording interval.
• the object is also achieved by a method according to claim 10.
• the general idea of the invention lies in the use of an NFC module for data acquisition and preferably for data transfer to readout units such as smart devices. Since the sterile container, which can in particular be a sterile container, a sieve basket or outer packaging, has the NFC module, the sterile container and the NFC module are permanently, steadily and permanently assigned. As a result, the invention can advantageously bring about a complete, sterile container-specific and automatic monitoring of sterile containers such as sterile containers, sieve baskets or outer packaging during entire usage cycles. This means that this monitoring takes place during transport as well as storage and sterilization / cleaning.
• the sensor or the sensors of the NFC module are set up to record data / parameters relevant for sterility and / or for sterilization continuously / permanently or at certain measuring times or intervals (recording interval), in particular stimulated by the data logger. In particular, they are used to record the currently prevailing conditions to which the sterile container is exposed.
• data / parameters are, in addition to the data / parameters available during the sterilization, also those that are available during transport and / or storage of the sterile container.
• Such data / parameters include, for example, temperature values and / or pressure values and / or humidity values and / or pH values and / or acceleration values and / or position values.
• the evaluation of the recorded sensor data / parameters can provide information about the environment and / or conditions to which the sterile container is / was exposed both currently and over a long period of time. The following table lists various parameters and their influence:
• the invention encompasses various embodiments in which different numbers of different data / parameters are collected.
• a basic variant for example, only temperature data and acceleration data can be recorded in order to be able to count sterilizations and record falls.
• the possibility of acquiring further data can be preinstalled within the scope of the invention, but their acquisition and processing can first have to be enabled.
• the temperatures recorded / measured within the scope of the invention to which the sterile container is exposed can on the one hand be outside temperatures, i.e. those in the vicinity of the sterile container, such as in a sterilization device, autoclave, etc.
• temperatures inside the sterile container can be recorded / be measured.
• the invention also includes such embodiments in which external temperatures and internal temperatures are detected / measured.
• data / parameters can be measured either continuously or at specific intervals.
• limit values / limit parameters for an acceleration range that demonstrably does not lead to any significant damage to the sterile container or the instruments it contains. Any deviation from such limit values / limit parameters, caused for example by a rapid rollover or a fall with high acceleration, is detected in a simple and reliable manner by the invention and signaled as possible damage.
• limit values / limit parameters for temperature and / or humidity and / or pressure can be set which should not be exceeded or fallen below.
• a cleaning / sterilization in a cleaning and disinfection device can be monitored in a simple and reliable manner according to the invention by recording at least the temperature.
• Humidity and / or pressure and / or pH are additional data that can be evaluated within the scope of the invention.
• the measured values can be compared with parameter curves for comparison. If these correspond to a specified tolerance, the process can be confirmed. After confirmation, the number of sterilizations carried out can be saved. It is a special feature of the invention that an automatic detection of cleaning and sterilization processes is possible within the framework of the monitoring of the entire usage cycle.
• the NFC module can be set up for automatic and sterile container-specific detection of sterilization cycles carried out by means of a sterile container, by detecting a temperature acting on the sterile container with a temperature measuring device assigned to the sterile container, and the temperature measuring device the temperature at defined first time intervals recorded, after exceeding a predetermined first limit temperature recorded temperature values are stored in a memory, after falling below a predetermined second limit temperature or after expiry of a predetermined period of time after exceeding the first limit temperature the storage of recorded temperature values is set, the stored temperature values are compared with reference temperature values, whereby a Deviation of the temperature values from the reference temperature values is determined, and in the event of a deviation within A counting device and / or a display device is or are actuated after a predetermined tolerance range.
• the first limit temperature and / or the second limit temperature can be adapted according to a need in order to cover and take into account different environmental conditions. By choosing the A range can be defined for both limit temperatures in which the
• the NFC module can also be set up to also compare the stored temperature values with reference temperature values within the scope of the cleaning / sterilization monitoring and to determine a deviation of the temperature values from the reference temperature values. This can take place in real time continuously while the temperature is being measured or only after the temperature falls below the second temperature limit or a time limit. In particular, the recorded values can be compared with a predetermined temperature-time curve and evaluated within a tolerance range.
• the cleaning / sterilization monitoring offers on the one hand the possibility of a kind of basic monitoring / rough monitoring and on the other hand the possibility of a sterilization monitoring / fine monitoring.
• the temperature is recorded at the first time intervals, i.e. at time intervals determined / defined by the first time intervals.
• the sterilization monitoring / fine monitoring the temperature is recorded at the second time intervals, that is to say at time intervals determined / defined by the second time intervals.
• the sterile container can be monitored for an entire period between two test cycles.
• the first time intervals can be selected to be relatively long, so that even if the temperature values recorded are stored, for example in the context of quality assurance, the recorded data volumes do not become too large with continuous monitoring over a long period of time.
• Continuous, complete monitoring over the entire operating time and / or service life of the sterile container is possible, as it were.
• a particularly fine monitoring of a cleaning / sterilization cycle or a possibly existing cleaning / sterilization cycle can take place.
• the second time intervals can be selected to be relatively short, that is to say shorter than the first time intervals, so that particularly fine / fine-meshed monitoring of the sterile container is possible after the first limit temperature has been exceeded.
• the large amounts of data resulting from fine-meshed monitoring are relatively uncritical, since fine-tuning usually only takes place over relatively short periods of time until the temperature falls below the second limit temperature and the recording of the temperature values is stopped. A particularly fine monitoring of a cleaning / sterilization process is thus possible.
• a particular advantage is that the change from coarse monitoring to fine monitoring takes place automatically, triggered when the first limit temperature is exceeded.
• the change from fine monitoring to coarse monitoring also takes place automatically, triggered by the temperature falling below the second limit temperature.
• This advantageously enables the automatic detection of sterilization cycles and / or the detection of temperature profiles, a measurement at defined time intervals and a comparison with predetermined temperatures / temperature profiles.
• the change between the measuring intervals can take place automatically.
• a deviation of the temperature values from the reference temperature values can also be determined. If the deviation is within the predetermined tolerance range, an actual sterilization process / sterilization cycle is assumed and a counter, in particular in the form of an incrementable cycle counter, is used to document the sterilization processes carried out with the sterile container. This can advantageously bring about an automatic detection and display of sterilization cycles carried out with the sterile container.
• the NFC module has an energy store. This energy storage unit can in particular be rechargeable by means of NFC or energy harvesting. Alternatively or additionally, the NFC module can have an energy store in the form of a battery or a rechargeable battery, in particular a high-temperature button cell.
• an energy generation unit in particular in the form of a Peltier element, a solar cell, in particular an indoor solar cell, or a turbine.
• a turbine can preferably be driven by means of a medium admission through an washer-disinfector cleaning hose.
• the NFC module can have a control unit, in particular a microcontroller.
• the microcontroller can be set up with a data memory for the autonomous acquisition, storage and evaluation of parameters.
• the NFC module can advantageously have a fluid-tight outer shell / housing. This can in particular consist of an epoxy resin.
• the outer shell preferably has a flat design.
• the NFC module can have thermal insulation, in particular and the use of highly efficient insulation materials such as an airgel, silicone or epoxy resin.
• the NFC module is preferably attached to or integrated in the sterile container.
• the NFC module is integrated / injected into a container panel of the sterile container or integrated / injected into a filter cover. It can also be provided on sieve baskets or outer packaging.
• the NFC module can be permanently assigned to a specific sterile container and the sterile items located therein can be reliably and unambiguously identified.
• their damage and sterilization cycles can be recorded and saved in the data logger and optionally in management software.
• data about the instrument sets contained therein can be saved. With constant equipping, the number of cycles for individual instruments can also be recorded and saved.
• a connection to a / data-technical communication with a management system for data evaluation and for reading out warnings in the operating room, in particular using mobile reading units or while they are being filled in the CSSD, is also within the scope of the invention.
• the NFC module has a temperature sensor and / or an acceleration sensor and / or a pressure sensor and / or a humidity sensor and / or a pH sensor and / or a gas sensor.
• the NFC module is suitable for recording and processing a large number of different data / parameters to which the sterile container can be exposed.
• sensor values are preferably recorded at defined intervals / intervals. In this way, the energy consumption for the continuous monitoring can be kept particularly low, which ensures a safe and long-lasting function of the NFC module.
• passive acceleration sensors can be used, which trigger from a specified limit.
• the NFC module has an NFC interface which is designed for data communication with a readout unit / programming unit.
• This interface is preferably a smartphone-compatible NFC interface. This means that updates or adjusted parameters can be saved without having to provide physical access to the module or damage its housing / insulation. Furthermore, additional functions can be activated or programmed in a particularly simple and user-friendly manner.
• the invention comprises an autonomous module / NFC data logger which can be used for transport, storage and sterilization monitoring by means of various sensors.
• the module / data logger can be attached at various positions on or in the sterile container, sieve basket or outer packaging in order to be able to clearly assign collected data, and is preferably thermally insulated and / or hermetically sealed.
• Its energy supply can take place by means of a replaceable battery or energy harvesting, which includes both sterilization and cleaning or can use storage to generate energy.
• the invention can include the use of sensors (in particular for temperature, pressure, air humidity, pH, gas, acceleration) to detect cleaning, sterilization and possible damage. A comparison of sensor values with stored default curves and defined tolerances to verify sterilization, cleaning or correct storage is particularly advantageous. By measuring intervals and using passive acceleration sensors, energy consumption can be minimized.
• by means of the invention by using energy harvesting during cleaning, sterilization and storage for energy generation, a utilization period can be maximized.
• a recording of sterilization cycles enables the specified "lifetime" to be checked. If this is exceeded, a message can be issued that requires service. If further cycles are to be activated, this can be programmed into the data logger or the management system without replacing the hardware to have to.
• FIG. 1 shows an embodiment of an NFC module with a battery in two perspective representations from different viewing directions
• FIG. 2 shows an embodiment of an NFC module with a Peltier element in two perspective representations from different viewing directions
• FIG. 3 shows an embodiment of an NFC module with a solar cell in a perspective representation
• FIG. 5 shows an NFC module integrated in a container panel
• FIG. 6 shows an NFC module integrated in a housing for attachment to a strainer basket.
• the NFC module 1 in FIGS. 1 to 4 each has an electronic circuit 2 and an energy supply unit 3.
• the circuit 2 is formed on a circuit board 4 and comprises - not identified in any more detail in the figures - a data logger, a transmitting / receiving circuit, in particular in the form of an NFC interface, a memory unit and a microcontroller.
• the energy supply unit 3 is used to supply energy to the electronic circuit.
• the NFC module 1 is accommodated in a housing 5. This surrounds the NFC module 1 in a hermetically sealed / fluid-tight manner.
• the energy supply unit is implemented in the form of a micro button cell 6.
• This can be designed as a rechargeable battery 6, which can be charged in particular via near-field communication (wireless charching).
• the housing 5 is accessible in order to be able to exchange it.
• the housing 5 is also thermally insulating, so that the battery 6 or the rechargeable battery 6 is protected from damaging temperature influences that can occur, for example, in the course of sterilization.
• the power supply unit is implemented in the form of a Peltier element 7 which is arranged on the underside of the circuit board 4 and is electrically connected to the circuit 2.
• the housing 5 can be made hermetically sealed without access, but it is only insulated in such a way that process heat from a cleaning process or a sterilization process can act on the Peltier element 7 and can be used to supply power to the circuit 2.
• the circuit board 4 is designed as an indoor solar cell 8, which is electrically connected to the circuit 2.
• the housing 5 is translucent in this case at least in the area of the solar cell 8.
• the exemplary embodiment in FIG. 4 has a turbine 9 as the energy supply unit 3, which is arranged on the edge of the circuit board 4 and is electrically connected to the circuit 2.
• the turbine 9 is either arranged outside the housing 5 or is accessible from the outside at its inlet 10 and outlet 11.
• sterile goods can be monitored in a particularly simple, sterile-goods-specific and permanent manner. In particular, sterilizations can be counted and possible damage can be recorded. Due to its flat design with small dimensions, it can be attached particularly easily to sterile containers, sieve baskets or outer packaging.
• FIG. 5 A variant is shown in FIG. 5, in which the NFC module 1 with a housing 5 or without a housing 5 is implemented in a panel 12 of a sterile container (not shown in the figures), here it is injected.
• the NFC module 1 with the microcontroller, a temperature sensor and a passive acceleration sensor is encased with an airgel insulation 13.
• the housing 5 is / is designed in the form of a shell 14 made of epoxy resin.
• the NFC module 1 is then injected into a container panel. During the transport of the sterile container, it is thus possible to monitor easily whether there are critical loads with possible damage to the sterile container and / or the sterile goods received therein.
• the passive acceleration sensor which sends a signal to the microcontroller from a defined (limit) acceleration.
• Bumps falls and rollover, which may damage the container and / or the sterile items, can thus be reliably detected.
• Such an incident can be displayed to a user through the NFC interface and / or by means of any optical or acoustic signal output devices that may be present. The latter can then carry out an additional visual inspection of the sterile container and / or the sterile items. The warning can then be reset using an NFC-enabled device.
• the NFC module can measure the ambient temperature using the data logger at set intervals. The distances can be chosen so that, on the one hand, as little energy as possible is consumed and, on the other hand, a significant increase the temperature can be recognized. If a defined limit / limit temperature is exceeded, the temperature data can be recorded at shorter intervals. A comparison with previously defined temperature curves and a tolerance range can be used to determine whether cleaning or sterilization was successful. Since the two processes differ significantly from each other, a distinction can be made by the microcontroller. In the event of a successful sterilization, an internal counter can be increased.
• This counter can indicate the number of all sterilizations recorded so far and thus serve to control how often the container or the associated set of instruments has been used.
• the NFC module 1 can again record the temperature at longer intervals and improper accelerations can be recorded.
• a readout unit for example at a packing station in the CSSD, data such as the number of sterilizations, possible damage and / or an identification number can be read out and transferred to a management system.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Surgery (AREA)
• Engineering & Computer Science (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Mechanical Engineering (AREA)
• Pathology (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Electromagnetism (AREA)
• Physics & Mathematics (AREA)
• Epidemiology (AREA)
• Apparatus For Disinfection Or Sterilisation (AREA)

Applications Claiming Priority (2)

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• 2020
  • 2020-01-24 DE DE102020101654.9A patent/DE102020101654A1/de active Pending
• 2021
  • 2021-01-20 EP EP21702390.2A patent/EP4093444A1/de active Pending
  • 2021-01-20 WO PCT/EP2021/051165 patent/WO2021148450A1/de unknown
  • 2021-01-20 CN CN202180010726.1A patent/CN115003338A/zh active Pending
• 2022
  • 2022-07-22 US US17/871,483 patent/US20220354617A1/en active Pending

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