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    • 专利摘要:
    METHOD TO MONITOR A PRODUCT STOCK AND STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK, in which methods and systems are provided to monitor the stock of products in a storage device that has an antenna, characterized by the fact that each product has a wireless tag corresponding to a unique wireless tag identification; stock monitoring includes accessing a stock list that contains at least one wireless tag identification, sending a specific search via the antenna for each of the at least one wireless tag identification in the stock list to the tag corresponding wireless, check if a response is received from the wireless label corresponding to the wireless label identification, whether the product corresponding to the wireless label is present on the storage device, determine, if a response is not received from the wireless label corresponding to the wireless tag identification, if the product corresponding to the wireless tag is not present on the storage device, and update the inventory list based on the products verified as present and the products determined to be not present on the device (... ).
    公开号:BR112012005575B1
    申请号:R112012005575-5
    申请日:2010-09-21
    公开日:2020-12-01
    发明作者:Grahan Ross
    申请人:Carefusion 303, Inc；
    IPC主号:
    专利说明:

    [001] The present patent application is related, in general, to the monitoring and control of stock of distributed products and, in particular, it is related to a system for monitoring and checking a stock of products based on identification tags. for distribution. BACKGROUND OF THE INVENTION
    [002] Centralized stock systems are often used by the medical community to track and distribute medical products such as medicines, medical devices etc. Some of these items are expensive and sophisticated instruments and tracking them closely is desirable from both the health professional's perspective and the property's perspective. For a healthcare professional, it is important to be able to locate an item quickly and accurately. As the facility owner, it is important that very expensive items, such as electronic instruments, have the greatest possible protection against theft.
    [003] In such a centralized inventory system, medical products are usually stored in a storage area, such as a wall cabinet or other secure location. The distribution of products from the storage area can be tracked by asking authorized users to indicate on a tracking record which products, and how many of them, they have removed from the storage area. Similarly, low-stock and empty-stock warnings can be provided by a vigilant user who has become aware of the diminished supply of a product during its removal. These systems, however, depend on users' compliance to track product distribution from them and are therefore subject to inaccuracy.
    [004] Certain inventory systems are automated for tracking inventory. For example, some well-known inventory tracking systems use RFID tags by placing a unique RFID tag on each item stored in a secure cabinet and having an RFID antenna located inside or close to the cabinet to monitor the presence of items in the cabinet detecting the presence of each unique RFID tag associated with each item. The RFID antenna in such systems is usually connected to a processor or computer to track stock, where the computer is provided locally inside the cabinet or close to it or is connected remotely via a connection or network. Such RFID-based inventory systems perform an inventory monitoring process by periodically scanning a storage area to identify all products currently stored in the storage area and creating a list of current inventory. These systems then compare the current inventory list with a previous inventory list to determine if any products have been removed. The problem with such systems is that this periodic "scan and discover" process requires significant time and processing resources until the scan is completed before the new current inventory list can be completed. This is because the "scan" is a general broadcast query that is not addressed to any particular wireless tag. All wireless tags present then respond to the scan broadcast signal with a generic response that is an invitation for further communication. Then, for each wireless tag that has issued a response, the system must send at least one secondary query specifically targeted to the wireless tag that has issued a response to obtain its identification and information related to the corresponding tag and the associated medical device. The wireless tag then responds with such information that is then processed and stored by the inventory monitoring system. You can recognize that this “scanning and discovery” process is too laborious as it results in multiple communications between each wireless tag and the inventory monitoring system, including extensive data transmissions from each wireless tag to the stock monitoring system. stock. SUMMARY
    [005] Configurations described in this document deal with the previous problems by tracking current stock and product distribution from storage areas through the use of wireless tags. Since user participation is not required to track current inventory and product distribution, there is an improvement in the accuracy and efficiency of distribution tracking. In particular, a quick inventory verification process is presented in which a previous stock of wireless labels already known is used to significantly reduce the time and resources required compared to a scanning and discovery process. Accurate stock can be maintained reliably and automatically quickly and efficiently.
    [006] Certain configurations provide a method of monitoring the stock of a plurality of products from a storage device that has an antenna, where each product has a corresponding wireless tag with a unique wireless tag identification. The method comprises the steps of accessing a stock list that contains at least one wireless tag ID, sending a specific query via the antenna for each of the at least one wireless tag ID in the stock list to the tag without corresponding wire, check, if a response is received from the wireless tag corresponding to the wireless tag identification, if the product corresponding to the wireless tag is present on the storage device, determine, if a reply is not received from the corresponding wireless tag to the wireless tag identification, if the product corresponding to the wireless tag is not present on the storage device and update the inventory list based on the products verified as present and the products determined to be not present on the storage device. In some configurations, the method even includes issuing a command to have all wireless tags verified in the verification step present on the storage device go into a quiescent state, performing a scanning operation to determine the presence of a new wireless tag that does not have a corresponding wireless tag identification in the inventory list and update the inventory list to include each new wireless label determined to be present during the scan operation.
    [007] Certain configurations provide an inventory monitoring system to monitor a stock of products where each has a corresponding wireless tag with a corresponding wireless tag identification. The inventory monitoring system includes a secure storage area, an operable antenna for receiving and transmitting signals within the secure storage area, and a processor configured to access a stock list that contains at least one wireless tag ID, send, for each of or at least one wireless tag identification in the stock list, a specific search via the antenna to the wireless tag corresponding to the wireless tag identification, check, if a response is received via the antenna, to from the wireless tag corresponding to the wireless tag identification, if the product corresponding to the wireless tag is present in the secure storage area, determine, if a response is not received via the antenna, from the wireless tag corresponding to the wireless tag identification, if the product corresponding to the wireless tag is not present in the secure and updated storage area ar the inventory list based on the products verified as present and the products determined as not present in the safe storage area. In some configurations, the processor is further configured to command all wireless tags scanned in the scan step as present on the storage device to enter a quiescent state, perform a scan operation to determine the presence of a new tag without wire that does not have a corresponding wireless tag identification in the inventory list and update the inventory list to include each new wireless label determined to be present during the scan operation.
    [008] It should be understood that both the previous summary and the detailed description below are exemplary and explanatory and are intended to offer a more in-depth explanation of the settings as claimed. DESCRIPTION OF THE DRAWINGS
    [009] The attached drawings, which are included to offer a deeper understanding of this invention patent application and are incorporated in this specification and form part of it, illustrate configurations and together with the description serve to explain the principles of the disclosed aspects and configurations . In the drawings: figure 1a is a block diagram that illustrates a stock monitoring system according to certain configurations; figure 1b is a block diagram that illustrates a stock monitoring system according to certain configurations; figure 2a is a block diagram showing an inventory monitoring system according to certain configurations; figure 2b is a block diagram that illustrates a stock monitoring system according to certain configurations; figure 3 is a block diagram showing an inventory monitoring system according to certain configurations; figure 4a is a block diagram illustrating a wireless label network according to certain configurations; figure 4b is a block diagram illustrating a wireless label network according to certain configurations; figure 5 is a block diagram showing a wireless tag according to certain configurations; figure 6 is a block diagram showing an inventory list structure according to certain configurations; figure 7 is a flow chart illustrating an inventory monitoring process to check a stock of products on a storage device according to certain configurations; figure 8 is a flow chart illustrating an inventory monitoring process to identify a stock that includes new products in a storage device according to certain configurations; and figure 9 is a block diagram illustrating a computer system in which certain configurations are implemented. DETAILED DESCRIPTION
    [010] In the following detailed description, numerous specific details are established to provide a complete understanding of the disclosed and claimed configurations. It will be apparent, however, to someone of ordinary skill in the technique that configurations can be practiced without some of these specific details.
    [011] Maintaining an accurate stock of medical products (eg, medicines, medical devices, biological samples, donated organs, etc.) is an important part of providing exemplary patient care. As such, certain configurations offer accurate and automated methods and systems to efficiently monitor the product stock of a storage device (eg, cabinets, stores, drawers, etc.). Certain configurations offer a fast and efficient inventory verification process in which a previous stock of known wireless labels is used to significantly reduce the time and resources required compared to a scanning and discovery process. In addition to efficient product stock monitoring through which product distribution is tracked, certain configurations can also associate authorized users with the products they distribute from the storage device and maintain a database of product information for the products on the storage device .
    [012] With respect to Figure la, a block diagram is shown that illustrates an inventory monitoring system according to certain configurations. The system includes a secure storage area 100, together with an antenna 120 that can transmit and receive signals within a storage area 100 and a processor 130 operably coupled to antenna 120. Storage area 100 is, for example, a lockable drawer, cupboard or storage, in which medical products are stored. According to one aspect, the limits of the storage area 100 are determined by the effective amplitude of the antenna 120. For example, the walls of the storage area 100 act to reduce the signal strength of the antenna 120 so that it is below an effective threshold. outside the storage area 100. Alternatively, the limits of the storage area 100 are narrower or wider than the effective amplitude of the antenna 120.
    [013] As shown in Figure 1a, a medical product 101 is arranged in storage area 100. Of course, it must be recognized that certain aspects are designed to monitor a plurality of medical products and not just a medical product. The medical product 101 is, for example, a medicine or medicine package, a medical device such as a syringe, a medical instrument such as an infusion pump or any of a number of other medical products for which a reliable inventory monitoring and distribution tracking. Associated with the medical device 101 is a wireless tag 105, where the wireless tag 105 is attached to, attached to, but detachable or provided on or within the medical device 101. Wireless tag 105 is, for example, a wireless identification tag such as an RFID tag. RFID tags are well known to those skilled in the art, partly because of their relatively low cost, their small size and the ease with which they can be integrated into many types of packaging. Active RFID tags usually contain an internal battery and are usually more complex and larger than passive tags, which are cheaper, less complex and smaller. Active tags generally have a more extensive detection range and have more functional features than passive tags and active tags can have the ability to be reused. Passive labels have a simple function in order to provide a unique identification and are usually disposable.
    [014] Processor 130 is configured to establish and use a wireless connection 110 between antenna 120 and wireless tag 105 on medical device 101. As seen in Figure la, processor 130 is connected to memory 140 through which the processor 130 can store and retrieve data, as discussed further below. Processor 130 uses wireless connection 110, continuously or at periodic intervals, to communicate with wireless tag 105 and thereby determine whether medical device 101 is still within the range of antenna 120 (that is, whether medical product 101 is still within storage area 100). As soon as the medical device 101 is removed from the storage area 100, as shown in Figure 1b, the wireless connection 110 will be lost (eg, because the wireless tag 105 of the medical device 101 is outside the effective range of the antenna 120) . Processor 130, which has been using wireless link 110 in attempts to communicate with wireless tag 105, determines that wireless link 110 has been lost and, consequently, determines that medical device 101 is no longer present in the storage 100 (ie, dispensed from storage area 100). In certain aspects, processor 130 is provided with a clock or access to a timing signal, whereby processor 130 determines when the medical device 101 was dispensed from storage area 100 and records the distribution of medical device 101 in a memory, such as memory 140 or an external database (as described in more detail below) that communicates with processor 130.
    [015] Although the wireless tag of the present exemplary configuration has been described as an RFID tag, it should be recognized that the configurations described in this document can be used with different types of identification tags. As will be immediately apparent to those skilled in the art, any of a number of different wireless identification tags can be used, including, for example, active RFID tags, passive RFID tags, semi-passive RFID tags, RuBee tags, Bluetooth ™ tags or NFC (Near Field Communication) tags.
    [016] According to certain configurations, the wireless link used by processor 130 to communicate with each wireless tag associated with a medical product need not be a direct link between antenna 120 and the wireless tag. For example, Figure 2a is a block diagram illustrating an inventory monitoring system according to certain configurations in which multiple medical products, such as medical products 101 and 102, are arranged in the storage area 100 of the system. Processor 130 directs antenna 120 to use wireless link 111 and communicate with wireless tag 106 of medical device 102. In the system in Figure 2a, another wireless link 112 is established between wireless tag 106 of medical device 102 and the wireless tag 105 of the medical device 101. The wireless tag 106 of the medical device 102 is configured to relay the information sent via wireless connection 112 to antenna 120 via wireless connection 111. Therefore, the processor 130 is able to monitor both wireless connection 112 and wireless connection 111 to communicate effectively with both the wireless label 106 on the medical device 102 and the wireless label 105 on the medical device 101. Thus, when the product Doctor 101 is removed from storage area 100, as shown in Figure 2b, processor 130 is able to determine when wireless connection 112 is lost, via wireless connection 111 with wireless label 106 and thereby establish when the medical device 101 was dispensed from storage area 100.
    [017] Alternatively, if medical device 102 had been dispensed from storage area 100, in place of medical device 101 (as shown in Figure 2b), both wireless connections 111 and 112 would have been lost, at least temporarily. In this scenario, the wireless tag 105 of the medical device 101, which is configured to continually seek to establish wireless connections with antennas such as the antenna 120 or with other wireless tags configured in a similar manner, quickly establishes a new wireless connection with the antenna 120, resulting in the configuration described above with respect to Figure la. Thus, if processor 130 determines, when monitoring wireless connections, which wireless connection 111 has been lost, a new wireless connection (eg, as wireless connection 110 in Figure la) is established within a period of time less than a predetermined threshold and processor 130 therefore does not determine that medical device 101 has been distributed.
    [018] In certain configurations, wireless tags such as wireless tags 105 and 106 communicate with each other and with antenna 120 on a single frequency. In other configurations, wireless tags 105 and 106 communicate with each other on a first frequency and communicate with antenna 120 on a second frequency. For example, in the configuration illustrated in Figure 2a, wireless tag 106 communicates with antenna 120 via link 111 at a higher frequency (eg, with a greater amplitude or better reliability) than the frequency at which wireless tags 105 and 106 communicate with each other via connection 112. This arrangement provides a more robust connection between wireless tag 106 and antenna 120, to ensure that product information 101, which is relayed by the tag wireless 106, reach antenna 120. In some ways, a lower frequency (eg, that consumes less battery power) is used for communication between wireless tags, as each wireless tag in a storage area does not need communicate with all other wireless tags, but only with those adjacent wireless tags that are relatively close together (as will be discussed in more detail below).
    [019] In certain configurations, groups of wireless tags associated with their respective medical products arranged within the same storage device form spontaneous "mesh networks" (eg, networks for which no additional infrastructure is required other than wireless tags) ) that can connect wirelessly to the stock monitoring system's antenna. The mesh network can be considered at least partially self-aware, in the sense that the presence of each wireless tag is "known" to one or more wireless tags nearby with which it has formed wireless links. Therefore, when a wireless tag (attached to a medical product) is absent from the mesh network (eg, because it was dispensed from the storage area), the mesh network will be able to communicate this information to the stock monitoring system's antenna. . Therefore, the antenna does not need to be directly connected to (i.e., does not need to form wireless links with) each wireless tag respectively associated with each product in the storage area.
    [020] This concept is illustrated in Figure 3, which shows a block diagram of an inventory monitoring system according to certain configurations. The inventory monitoring system includes a storage area 300, an antenna 320 operable within storage area 300, and a processor 330 operably coupled to antenna 320. As seen in Figure 3, processor 330 is connected to 360 memory through which processor 130 can store and retrieve data such as an inventory list, as discussed further below. A plurality of medical products with wireless tags 301-307 establish a mesh network 340, as described above, forming a series of wireless links between wireless tags 301-307. Antenna 320 is connected to the mesh 340 network by one or more wireless connections, such as wireless connection 310. In several different respects, processor 330 monitors the mesh 340 network via antenna 320 in several ways, including, for example , regularly check each of the wireless tags to which the antenna 320 is connected in order to determine which other wireless tags it is connected to, etc. When one or more wireless tags 301 - 307 are removed from the mesh network (eg, because the corresponding medical product with the wireless tag has been distributed), processor 330 detects its absence when a response is not received from the wireless tags in response to an antenna query 320, as described below. Processor 330 also detects the addition of new wireless tags (associated with medical products recently added to storage area 300) to the mesh 340 network by scanning for new tags.
    [021] According to certain configurations, antenna 320 is configured to periodically operate at a higher transmission power, to temporarily form separate wireless connections with each of the wireless tags on medical products 301 - 307, to verify that the mesh 340 is accurately reporting the presence of all wireless tags on it, and is not inadvertently reporting the presence of a wireless tag that has already been dispensed with.
    [022] In some respects, the inventory monitoring system is operably coupled to the 350 database, as shown in Figure 3. As will be immediately apparent to those skilled in the art, this configuration allows the system's 330 processor to share information regarding the distribution of medical products, such as an inventory list, from storage area 300 to database 350, for storing inventory tracking data. According to certain configurations, each wireless tag is associated with a unique wireless tag identification number, allowing the tracking of a single medical product that is associated with the tag to be scanned. The 350 database therefore allows the stock monitoring system to share other information about medical products 301 - 307 with the 350 database as well, as discussed in more detail below.
    [023] According to certain aspects, processor 330 is configured to generate low stock or empty stock warnings when a stored quantity of a particular type of medical product in storage area 300 reaches or is below a predetermined threshold. In some respects, such a warning is provided to a remote user via a network connection such as, for example, a network connection used to operably couple the inventory monitoring system to the 350 database. database 350 is connected to another separate processor or other computing device that is configured to generate similar warnings based on the stored quantities of various medical products reported to database 350.
    [024] Mesh networks have different types of network topologies. For example, Figures 4a and 4b illustrate two possible network topologies. In Figure 4a, a network of three wireless tags 402 - 404 is connected to an antenna 401. In this network configuration, antenna 401 is configured to form and maintain a wireless connection (that is, the wireless connection between the antenna 401 and wireless tag 402), and each wireless tag 402 - 404 is configured to form and maintain two wireless connections (eg, wireless tag 402 forms a link to the 401 antenna and a link to the wireless tag wire 403, wireless tag 403 forms a link with wireless tag 402 and wireless tag 404). Therefore, this network topology is capable of being envisioned as a "chain" topology. As you can see from Figure 4a, the last "link" in the chain, the wireless tag 404, forms only one wireless link (that is, with the wireless tag 403), because there are no other wireless tags in its surroundings. In this configuration, the wireless tag 404 periodically checks its surroundings to determine if another wireless tag appears within its spectrum. Because the 402 - 404 wireless tags are set up to collect and share information about the mesh network they formed, once the 404 wireless tag forms another wireless link (e.g., with a newly added wireless tag), this information will be relayed along the chain through wireless tags 403 and 402, one at a time, to antenna 401 (and from antenna 401 to an associated processor, as already described in more detail above).
    [025] Regarding Figure 4b, another network of wireless labels is illustrated according to certain configurations. In the network topology of Figure 4b, antenna 411 and each of the wireless tags 412 - 417 are configured to form and maintain three wireless connections. Therefore, when the wireless tag is added to or removed from the mesh network, this information will have several possible routes to the 411 antenna (and its associated processor), making the network more robust, albeit at the expense of increased power consumption (and concomitant reduced battery life) on each of the wireless tags on that network.
    [026] According to one aspect, a mesh network, as illustrated in Figure 4b, maintains information not only about the identity of wireless tags on the network, but about the relationship of those tags (eg, information about which tags share links ). This information about the network topology solves an additional problem common to product distribution based on wireless tags, in which a user can "cheat" a distribution system by removing a product from its packaging, and replacing the packaging with the label without wire in the system. In doing so, the user can circumvent the system making him believe that the stock has not been changed (since the label is still registered as present). With a mesh network that maintains topology information, however, removing a product (even if temporarily) will cause the wireless label links for that product to be removed from the mesh network and replaced elsewhere in the topology (when the empty packaging is returned). In some respects, if an empty packaging is discovered during a subsequent inspection, the system identifies the user associated with the change in the empty packaging topology. Thus, a mesh-style topology deals with the problem of "cheating" a distribution system by removing the product, but not the label, from the system.
    [027] According to certain configurations, wireless tags 412 - 417 communicate with each other at a frequency that requires less power (eg, and has a smaller amplitude) than the frequency with which the network is connected. communicates with antenna 411 (eg via wireless tags 412 - 414). According to such a configuration, each wireless tag has an effective communication range sufficient to cover only some of its adjacent ones. For example, wireless tag 417 does not transmit or receive with enough power to form a wireless link directly with wireless tag 412, which is located a little distance from wireless tag 417. Preferably, wireless tag 417 uses a lower power frequency to communicate directly with wireless tags 415 and 416 only. In other respects, to ensure a robust connection between the network and antenna 411, wireless tags 412 - 414 use a higher power frequency to maintain wireless connections with antenna 411. In another arrangement, all wireless tags 412 - 417 and antenna 411 use the same frequency, but wireless tags 412 - 417 use different power levels (eg, by means of greater or lesser amplification) depending on whether they are communicating with the 411 antenna or another wireless tag.
    [028] Although the previous exemplary configurations described two network topologies in particular, the configurations are not limited to those specific configurations. As will be immediately apparent to those skilled in the art, any one of a series of network topologies, or any combination of these, is capable of being used in a wireless label mesh network.
    [029] In another aspect, a wireless tag that is associated with a medical product offers additional functionality in addition to assisting in monitoring the inventory and tracking the distribution of the medical product from a storage device. For example, such a wireless tag is able to perceive environmental factors that could impact the medical product to which it is attached (eg, heat, radiation, humidity, chemical exposure, etc.), and report these environmental factors to a monitoring system of stock. For example, Figure 5 illustrates a wireless label 500 according to certain configurations. The wireless tag 500 includes an antenna 501 to communicate with the antenna of a stock monitoring system and with the antennas of other wireless tags. Processor 502 is also provided to control antenna 501 and retrieve information from memory 503 and store information on it. Information stored in memory 503 can be obtained from antenna 501 (eg, information about other wireless tags in range, information about the storage area in which wireless tag 500 is placed, etc.), or from of environmental sensor 504. In one configuration, memory 503 also stores the program code for execution by processor 502, which configures the wireless tag 500 to form mesh networks, communicate with the inventory monitoring system, measure environmental information, etc. . A bus 506 is used to connect antenna 501, processor 502, memory 503 and environmental sensor 504 and a battery 505 is included to supply power to the wireless tag 500 for the operation of the components mentioned above. In certain configurations, the 505 battery is replaceable and / or rechargeable. The wireless tag 500 as shown in Figure 5 is usually called the active tag. However, the wireless label 500 may not have all the components shown in Figure 5 thereby providing a lower cost, less functionality and smaller size and such wireless labels are usually referred to as passive or semi-passive labels.
    [030] According to specific configurations, the environmental sensor 504 is configured to perceive several different environmental parameters of interest. For example, the environmental sensor 504 is configured to measure the ambient temperature, to inform when a medical product to which the wireless label 500 is in danger of being compromised by an extreme temperature level. The environmental sensor 504 is alternately configured to measure the humidity of the environment to similarly inform when the medical product associated with the wireless label 500 is in danger of being compromised by an extreme humidity level. With this information, the administrative department is able to correct environmental hazards (such as excessive humidity and heat) in a storage area in time to prevent medical products from being compromised or destroyed.
    [031] Although the wireless label 500 has been illustrated as including a single environmental sensor, the configurations are not limited to that specific provision. Preferably, any number of environmental sensors is included on a wireless tag. In other respects, some wireless tags are provided with absolutely no wireless sensors, others have multiple environmental sensors and still others have multiple redundant sensors (eg, more than one sensor configured to measure temperature) to ensure their accuracy.
    [032] Attaching a wireless tag such as the wireless tag 500 to a medical device presents a challenge: if the wireless tag is not securely attached to the medical device, it can be removed, accidentally or intentionally, prematurely (eg, before the medical product is consumed or otherwise used) and, thereby, mislead the inventory monitoring system. Some methods for securely attaching a wireless tag to a medical product, however, require compromising its sterile packaging, which is an equally unacceptable solution. Therefore, in certain respects, a wireless tag environmental sensor is configured to assess the status of attaching a wireless tag to a medical product (eg, maintaining electrical contact with a metallic conductor of a medical product, or by tightening a switch, etc.). If the wireless tag realizes that it is no longer attached to the medical device, it will provide this information to an inventory monitoring system. Thus, if a user attempts to remove a medical device from an inventory monitoring system without alerting the system, the wireless tag will report its removal from the medical device and associate the last user who had access to the storage area with the removal. In this way, the wireless tag is attached to a medical product without compromising its sterile packaging, while mitigating the risk of removal from that place. In this way, the fixation situation is considered another type of environmental information collected by the wireless tag 500 and stored there.
    [033] The environmental information collected by the wireless tag 500 can be communicated to a database operably coupled to a stock monitoring system, either through a direct link between the wireless tag 500 and the system antenna. , or through a wireless tag mesh network that relays information to the system. In other respects, other information that the wireless tag 500 can track and relay to the database includes the location of the last storage area in which the wireless tag was placed, the duration of the last storage period, etc. This level of tracking environmental information provides a comprehensive database of health, location, and stock access that, as will be immediately apparent to those with technical skill, can be of great use to a hospital administrator or other healthcare provider.
    [034] According to certain configurations, a wireless label such as wireless label 500 is reusable once the product to which it is attached has been consumed and / or removed. In such a configuration, as soon as the wireless label 500 is removed from the product, it can receive a signal to execute the code stored in memory 503 to reset the label (eg, to clear memory 503 of stored environmental information, to optionally generate a new unique identification number, etc.) and then associate the wireless tag with a new medical product. Of course, in certain configurations, this function is limited to an administrator with the proper authority using a secure mechanism such as a password, key or biometric identifier in order to transmit a signal to execute such code. The ability to reuse wireless labels adds significant value to the inventory monitoring system, since no part of the system needs to be consumable or expendable.
    [035] As mentioned above, certain aspects are related to the monitoring of the stock of medical products contained in a storage area. In this way, the system is able to determine whether, from time to time, any product has been removed from the storage area, such as a lockable cabinet, and whether any product has been added to the storage area. These activities are common in a healthcare setting when a healthcare professional removes products from a safe cabinet for use and when a medical administrator adds products to the cabinet to replenish low stock. An inventory monitoring process is carried out periodically or is triggered by an event, such as when a door to the storage area is opened and then closed, indicating that a transaction has occurred involving the addition or removal of a medical product from the storage area. storage.
    [036] Some inventory systems perform an inventory monitoring process by periodically scanning the storage area to identify all products currently stored in the storage area and creating a list of current inventory. These systems then compare the current inventory list with a previous inventory list to determine if any products have been removed. The problem with such systems is that this periodic "scanning process" to discover all the products currently present takes significant time and processing resources until the scan is completed and the new current inventory list can be completed. This is because the "scan" is a general broadcast query that is not addressed to any particular wireless tag (such as an RFID tag). In response to such a general scan broadcast query, the wireless tags currently located in the storage area send back a generic response signal. Then, for each wireless tag that sends a response, the system sends at least one secondary query directed specifically at the wireless tag that sent the response to obtain its identification and other information related to the corresponding tag and the associated medical device. The wireless tag then responds with such information that is then processed and stored by the inventory monitoring system. As you can see, this is a laborious process as it results in multiple communications between each wireless tag and the inventory monitoring system, including extensive data transmissions from each wireless tag to the inventory monitoring system. In summary, the performance of such a periodic scanning and discovery process by an inventory monitoring system is basically like starting again blindly every time to discover labels currently present in the storage area without using any knowledge of a previous stock .
    [037] An inventory monitoring system is provided that performs an inventory monitoring process that is much faster because it requires less communications and data transmissions between the wireless tags currently present and the system to perform an inventory update, in compared to a periodic inventory “scan and discover” process as discussed above. Figure 6 is a block diagram showing an inventory list according to one aspect. Inventory list 600 can be stored in a memory of the inventory monitoring system, such as memory 140 shown in Figures 1a, 1b, 2a and 2b or such as memory 360 or database 350 shown in Figure 3. In certain configurations, multiple versions of such an inventory list are kept in a memory of the inventory monitoring system, such as the previous inventory list and a current inventory list. In this way, the lists can be compared to determine the transactions involving the removal and / or addition of medical products during the time between the generation of the previous stock list and the current stock list.
    [038] Back to Figure 6, it was seen that the stock list 600 is made up of multiple records from 620-1 to 620-N. Each of the 620-1 to 620-N records is related to a particular wireless tag that is currently present in the storage area or that was previously present in the storage area, but is no longer present. Each of the 620-1 to 620-N records includes multiple data fields including, but not limited to, wireless tag identification 601, the associated medical product 602, present status 603, removal time 604, the last person with access 605 and other 606 which may include additional data fields for information related to the medical product, the environmental factor of the storage area and other pertinent information.
    [039] In some respects, when the inventory monitoring system performs an inventory monitoring process, it retrieves a previous inventory list from a previous inventory monitoring process and then updates that list to generate a current inventory list. As seen in the example of register 620-1 shown in Figure 6, a wireless tag identification 601 of 101100 is associated with register 620-1 and corresponds to the wireless tag associated with medical product 602 which is an analgesic drug. The 620-1 record indicates that the medical device has a present status of meaning YES that is currently present in the storage area. Therefore, this record has no entry in the 604 Removal Time data field. The Last Person With Access 605 data field indicates that Joe was the last person who had access to the storage area when that record changed status. Considering that the medical device is currently present, this means that Joe was the identified user who added the medical device to the storage area. In contrast, register 620-2 has a wireless tag identification 601 of 011001 and corresponds to a wireless tag associated with medical product 602 which is an IV pump that is no longer present in the storage area, and was removed on the date from 18.06.09 to 18h23 by Fred. In this way, the inventory list provides a succinct tracking of the stock of medical products that are currently, and were previously, stored in the storage area. Of course, the stock list 600 is exemplary and other ways and means of tracking data related to wireless tags are able to perform these functions, such as tables, lists of links, databases and other data formats.
    [040] Figure 7 is a flow chart that illustrates an inventory monitoring process to check an existing product inventory on a storage device according to certain configurations. With respect to Figure 7, a stock list already stored in the system is accessed, as from memory 140 in Figure la, or from database 350 in Figure 3. In certain configurations, the stock list is a list of previous stock that was generated and / or updated during the last time an inventory monitoring process was carried out. As described above, the inventory list contains at least one, but usually a plurality of records associated with several wireless tags (and their corresponding medical products) present in the storage area at the time the last inventory monitoring process was performed . In some respects, the inventory list also contains records associated with wireless tags (and their corresponding medical products) that were previously present in the storage area prior to the time when the last inventory monitoring process was performed and are indicated as not more gifts. In step 702, the next inventory list record is accessed and the wireless tag identification is obtained if the wireless tag is identified in the inventory list as being present.
    [041] In step 703, the verification process begins with sending a specific verification query to the wireless label with the wireless label identification, via the stock monitoring system's antenna. In certain configurations, the wireless tag-specific verification query contains the wireless tag identification, and in other configurations, the wireless tag-specific verification query contains an abbreviated "derived" unique identifier that is derived from the wireless tag identification. longer and complete thread. Such a derived unique identifier can be a checksum of the complete wireless tag identification, where the checksum is a shorter data string and this allows for a faster verification step. Of course, it must be recognized that a unique derived identifier can be generated by other methods, such as different compression algorithms and the like. In a certain aspect, the specific verification query also contains a function code that instructs the specific wireless tag to respond if the tag identification matches the wireless tag identification (or secondary unique identifier) in the specific verification query. In another aspect, the specific verification query also contains a function code that instructs the specific wireless tag to enter a quiescent state after responding to the specific verification query. This prevents the specific wireless tag from responding later if a general scan is performed to identify the presence of new wireless tags in the system, as discussed further below. It is determined in step 704 whether the inventory monitoring system antenna received a specific wireless tag response in response to the specific verification query. In certain respects, the specific verification query will extract a response only from the wireless tag corresponding to the wireless tag identification (or secondary unique identifier) contained in the specific verification query, and all other wireless tags in the storage area will not. respond to the specific verification query. If, in step 704, it is determined that the stock monitoring system antenna received a response from the specific wireless tag in response to the specific verification query, the presence of the medical device associated with the specific wireless tag will then be indicated as verified in step 705. If, however, in step 704 it is determined that the stock monitoring system antenna did not receive a response from the specific wireless tag in response to the specific verification query, then it is determined that the medical device associated with the tag without specific wire is not present (was distributed) in step 706.
    [042] The inventory list record is then updated in step 707 to reflect the current "present" status of the corresponding medical product in the storage area as being verified as present or determined as not present. As mentioned above, in some respects the time of removal is recorded in the inventory list if the medical device is no longer present, together with the user who accessed the storage area at the time of removal. Then, in step 708, it is determined whether there are more records in the stock list that have not yet been processed. If so, the process flow returns to step 702 and steps 702 to 708 are repeated. If there are no more records in the inventory list that have not yet been processed, the process ends at step 709. In this way, the inventory monitoring system performs a process of verifying an already known inventory list of wireless tag identifications using a specific verification query tailored to each wireless tag identification in the already known inventory list. This verification process thus avoids the time-consuming communications and data transmissions associated with a typical “scan and discover” process to determine the presence of those wireless tags that have already been identified in the last inventory list.
    [043] In addition to the verification process described above with respect to Figure 7, certain configurations also determine whether new medical products have been added to the storage area by performing a second scanning step for new products after the verification of already known wireless labels has been completed. Figure 8 is a flow chart that illustrates an inventory monitoring process to check for the presence of known wireless tags and to identify a stock of new products in a storage area according to certain configurations. In Figure 8, step 801 represents the verification process described above with respect to steps 701-709 in Figure 7. Once this verification process in Figure 7 is performed, it is determined in step 802 whether the wireless tags that have been verified have already been placed in a quiescent state. As discussed above with respect to step 703 of Figure 7, the specific verification query sent in step 703 may also contain a function code that instructs a specific wireless tag to enter a quiescent state after responding to the specific verification query. This prevents the specific wireless tag from responding later if a general scan is performed to identify the presence of new wireless tags in the system. If it is determined in step 802 that all wireless tags checked have already been instructed in step 703 to go into a quiescent state after responding to your specific verification queries, the process flow moves to step 804. However, if determined in step 802 that all scanned wireless tags were not instructed in step 703 to go into a quiescent state after responding to their specific verification queries, an "inactive" command is sent in step 803 to all wireless tags in inventory list that has already been verified to be present in the process of step 801. This "inactive" command instructs all such wirelessly checked tags to enter a quiescent state, either for a fixed period of time, or even otherwise instructed through communication specifically targeted to specific wireless tags.
    [044] In step 804, a typical scanning and discovery process is then performed to identify newly added wireless tags in the storage area. Wireless tags already checked from the inventory list will not respond to this scanning process because they have been placed in a quiescent state. Therefore, the scanning process will only involve wireless tags associated with medical products that have recently been added to the storage area since the last inventory monitoring process carried out. In this way, the amount of communications and data transmissions associated with such a scanning process is significantly reduced because the scanning process does not involve any of the wireless tags scanned in the storage area. The inventory list is then updated in step 805 to add a record for each of the newly added wireless tags (associated with the newly added medical products) in the storage area. The process ends at step 806.
    [045] Figure 9 is a block diagram illustrating an exemplary computing system 900 in which certain configurations are implemented cooperating with at least one storage area. Computer system 900 includes a bus 902 or other communication mechanism for communicating information and a processor 904 coupled to bus 902 for processing information. The computer system 900 also includes a 906 memory, such as random access memory ("RAM") or other dynamic storage device, coupled to the 902 bus to store information and instructions to be executed by the 904 processor. The 906 memory also it can be used to store temporary variable information or other intermediate information while executing instructions to be executed by the 904 processor. The computer system 900 also includes a 910 data storage device, such as a magnetic disk, optical disk or data device. solid state memory, coupled to bus 902 to store information and instructions.
    [046] In some respects, the computer system 900 is connected via the input / output module 908 to a display device (not shown), such as a cathode ray tube ("CRT ') or liquid crystal display ( "LCD") to display information to a computer user. An input device, such as a keyboard or mouse, is also connected to computer system 900 through input / output module 908 to communicate information and command selections to the 904 processor.
    [047] According to a configuration, the monitoring of the stock of medical products in a storage device is carried out by a computer system 900 in response to processor 904 executing one or more sequences of one or more instructions contained in memory 906. In certain aspects, such instructions are read in memory 906 from another machine-readable medium, such as a 910 data storage device. Executing the instruction sequences contained in main memory 906 causes processor 904 to perform the steps of described in this document. One or more processors in a multiple processing arrangement are employed to execute the instruction sequences contained in memory 906 or received from another source via the 902 bus. In alternative configurations, integrated circuits are used in place of or in conjunction with software instructions. implement the functions described. Thus, configurations are not limited to any specific combination of hardware and software circuits.
    [048] The term "machine-readable medium", as used in this document, refers to any medium that participates in providing instructions to the 904 processor for execution. Various forms of such a medium are acceptable for such use, including, but not limited to, non-volatile media, volatile media and transmission media, such as a wired or wireless connection. Non-volatile media includes, for example, optical or magnetic disks, such as the 910 data storage device. Volatile media includes dynamic memory, such as 906 memory. Transmission media includes coaxial cables, copper wires and optical fiber, including the wires that comprise the 902 bus. In other respects, the transmission medium takes the form of electromagnetic waves, acoustic waves or light waves, such as those generated during radio frequency and infrared data communications. Common forms of machine-readable media include, for example, floppy disk, floppy disk, hard disk, magnetic tape, any other magnetic medium, a CD-ROM, DVD, any other optical medium, perforated cards, paper tape, any other medium physical with perforation patterns, RAM, PROM, EPROM, FLASH EPROM, any other memory device, chip or cartridge, a carrier wave or any other medium that can be read by a computer.
    [049] The description of this document is offered to enable anyone with skill in the art to put into practice the various configurations described in this document. Although the configurations and aspects in this document have been particularly described with respect to the various figures and configurations, it should be understood that these are for illustrative purposes only and should not be considered as limiting the scope of such configurations and aspects. For example, although the inventory monitoring system has been described with respect to medical applications, wireless tags apply to any type of product, whether medical or not, to provide automated and accurate inventory monitoring and distribution tracking.
    [050] There are other ways to implement the settings and aspects described above. Several functions and elements described in this document can be divided differently from the one shown without deviating from its essence and scope. Various modifications to these configurations will be immediately apparent to those of skill in the art and the generic principles defined in this document apply to other configurations. Thus, many changes and modifications to the settings and aspects described can be made by someone with common skill in the technique without deviating from its essence and scope.
    [051] A reference to an element in the singular is not intended to mean "one and only one" unless specifically determined, but preferably "one or more." Pronouns in the masculine (eg, yours) include the feminine (eg, yours) and vice versa. The term "some" refers to one or more. Titles and subtitles underlined and / or in italics are used only for practicality, do not restrict the configurations and aspects described, and do not have their name related to the interpretation of the described configurations and aspects. All structural and functional equivalents of the elements of the various configurations described in the course of this patent application known or known to those of ordinary skill in the art are expressly incorporated into this document by reference and are intended to be covered by the configurations and aspects described . Furthermore, none of what has been disclosed in this document is intended to be dedicated to the public regardless of whether such an application for an invention patent is explicitly mentioned in the description above. Figure legends Figure 7 701) Access Stock List 702) Get Next Wireless Tag Identification from Next Record in Wireless Tag List 703) Send Specific Verification Inquiry to Wireless Tag ID 704) Wireless Tag Response Corresponding 705) Verified Presence of Medical Product Associated with Wireless Tag 706) Determine if Medical Product Associated with Wireless Tag Is Not Present (Dismissed) 707) Update Inventory List Based on Presence / Absence of Medical Product 708) More Records in Stock List Figure 8 801) Previous Stock List Verification Process (Figure 7) 802) Command All Verified Wireless Labels to Go Quiescent 803) Perform Scanning Process to Identify New Wireless Labels 804) Update the Inventory List Based on any New Wireless Labels Figure 9 904) Processor 910) Data Storage 908) Input / Output Module 906) Memory
    权利要求:
    Claims (20)
    [0001]
    1. “METHOD FOR MONITORING A PRODUCT STOCK” (101) on a storage device (100) that has an antenna (120), each product having a corresponding wireless tag (105) with a corresponding wireless tag identification, the method consisting of the steps of: registering, in an inventory list (600), by the storage device (100), a period when a respective product is removed from the storage device (100) or when a wireless label (105) the respective product is removed from the respective product, and an identification of a last user who accessed the storage device (100) in a period corresponding to the removal, characterized in that the stock list (600) contains a plurality of, wireless tag identifications, a portion of the wireless label identifications corresponding to a first set of products identified as present in the storage device (100) and a portion of the wireless label identifications corresponding to a second set of products identified by the storage device (100) as no longer present on the storage device (100) (§ 26, 50, 51); access, via processor, the stock list (600) (§ 52); send, via processor, only for each wireless tag (105) a plurality of identifications, of wireless tag that are identified in the stock list (600) as being present in the storage device (100), a specific search by means of from the antenna (120) to the wireless tag (105) corresponding to the wireless tag identification, the specific search including a unique identifier associated with the wireless tag identification and an instruction for the wireless tag (105) responds only if an identification a wireless tag (105) matches the unique identifier of the specific search, and the specific search including an instruction for the wireless tag (105) to enter a quiescent state after responding to the specific search (§ 53); verify, via processor, that the product corresponding to the wireless tag (105) is present in the storage device (100) when a response is received through the antenna (120), from the wireless tag (105) corresponding to the identification wireless tag, where all wireless tags (105) verified as present on the storage device (100) go into a quiescent state and are prevented from responding to an additional scanning operation to determine the presence of new tags (105) wireless; determine, via processor, when a response is not received via the antenna (120), from the wireless tag (105) corresponding to the wireless tag identification in the specific search, if the product corresponding to the wireless tag (105) is no longer present on the storage device (100), and a user who accessed the storage device (100) in the period corresponding to the removal of the product (§ 54); update, via processor, the stock list (600) based on the products (101) verified as gifts and the products (101) determined as no longer present, where, for each product determined as no longer present, where, for each product determined to be no longer present, a user is identified as having accessed the storage device (100) at the time the product was removed from the storage device (100); perform, via processor, an additional scanning operation to determine the presence of new wireless tags (105) that were not in the stock list (600), in which the wireless tags (105) in the quiescent state are prevented from responding to the scan operation; and update, via processor, the stock list (600) with products (101) corresponding to the new wireless labels (105) determined (§ 56).
    [0002]
    2. "METHOD FOR MONITORING A PRODUCT STOCK", according to claim 1, characterized in that each specific search is sent through the antenna to the corresponding wireless tag through a wireless connection between the antenna and the wireless tag.
    [0003]
    3. "METHOD FOR MONITORING A PRODUCT STOCK", according to claim 1, characterized in that each wireless tag is an active RFID tag.
    [0004]
    4. “METHOD FOR MONITORING A PRODUCT STOCK”, according to claim 1, characterized in that, in the access step, the stock list is accessed from a memory device.
    [0005]
    5. "METHOD FOR MONITORING A PRODUCT STOCK", according to claim 4, characterized by the stock list that is accessed from a memory device being a list of previous stock that was generated during a stock monitoring operation previous.
    [0006]
    6. “METHOD FOR MONITORING A PRODUCT STOCK”, according to claim 1, characterized in that the specific search sent to the wireless tag contains the wireless tag identification that corresponds to the wireless tag.
    [0007]
    7. “METHOD FOR MONITORING A PRODUCT STOCK”, according to claim 1, characterized in that the stock list also contains a present status indicator corresponding to each of the wireless tag identifications, the present status indicator providing an indication of the presence, on the storage device, of the wireless tag that corresponds to the wireless tag identification.
    [0008]
    8. "METHOD FOR MONITORING A PRODUCT STOCK", according to claim 1, characterized in that the specific search sent to the wireless tag contains a unique identification code that corresponds to the wireless tag.
    [0009]
    9. "METHOD FOR MONITORING A PRODUCT STOCK" according to claim 8, characterized in that the unique identification code is a checksum value of the wireless tag identification that corresponds to the wireless tag.
    [0010]
    10. “METHOD FOR MONITORING A PRODUCT STOCK”, according to claim 1, further characterized by: the step of: commanding all wireless tags verified in the verification step so that they leave the quiescent state after the scan.
    [0011]
    11. “STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK” (101), each having a corresponding wireless tag (105) with a corresponding wireless tag identification, comprising: a secure storage device (100), characterized by a secure storage device processor (100) being configured to record, in an inventory list (600), a period when a respective product is removed from the storage device (100) or when a wireless label (105) the respective product is removed from the respective product, and an identification of a last user who accessed the storage device (100) in a period corresponding to the removal, in which the stock list (600) contains a plurality of wireless tag identifications, a part of the wireless tag IDs corresponding to a first set of products identified as present on the storage device (100) and a part of the tag IDs wireless ueta corresponding to a second set of products identified by the storage device (100) as no longer present in the storage device (100); an antenna (120) operable to receive and transmit signals within the secure storage device (100); and a processor configured to: access the inventory list (600); send, only for each wireless tag (105) the plurality of wireless tag identifications that are identified in the stock list (600) as being present in the storage device (100), a specific search via the antenna (120) to the wireless tag (105) corresponding to the wireless tag identification, the specific search including a unique identifier associated with the wireless tag identification and an instruction for the wireless tag (105) responds only if a tag identification (105 ) wireless match the unique identifier of the specific search, and the specific search including an instruction for the wireless tag (105) to enter a quiescent state after responding to the specific search; verify that the product corresponding to the wireless tag (105) is present in the secure storage device (100) when a response is received via the antenna (120), from the wireless tag (105) corresponding to the tag identification without wire, wherein all wireless tags (105) verified as present in the storage device (100) go into a quiescent state and are prevented from responding to an additional scanning operation to determine the presence of new wireless tags (105); determine, when a response is not received via the antenna (120), from the wireless tag (105) corresponding to the wireless tag identification in the specific search, if the product corresponding to the wireless tag (105) is no longer present on the storage device (100), and a user who accessed the storage device (100) in the period corresponding to the removal of the product; and update the stock list (600) based on the products (101) verified as gifts and the products (101) determined to be no longer present on the secure storage device (100), where, for each product determined to be no longer present , a user is identified as having accessed the storage device (100) at the time the product was removed from the storage device (100); perform an additional scan operation to determine the presence of new wireless tags (105) that were not on the stock list (600), where the wireless tags (105) in the quiescent state are prevented from responding to the scan operation; and update the inventory list (600) with products corresponding to the new wireless labels (105) determined.
    [0012]
    12. "STOCK MONITORING SYSTEM FOR MONITORING A PRODUCT STOCK", according to claim 11, characterized in that each specific search is sent through the antenna to the corresponding wireless tag through a wireless connection between the antenna and the wireless label.
    [0013]
    13. "STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK", according to claim 11, characterized in that each wireless tag is an active RFID tag.
    [0014]
    14. "STOCK MONITORING SYSTEM FOR MONITORING A STOCK OF PRODUCTS", according to claim 11, also comprising a memory device that is operationally coupled to the processor, characterized by, in the access step, the list inventory can be accessed from the memory device.
    [0015]
    15. "STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK", according to claim 14, characterized in that the stock list that is accessed from the memory device is a list of previous stock that was generated during an operation previous inventory monitoring.
    [0016]
    16. "STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK", according to claim 11, characterized in that the specific search sent to the wireless tag contains the wireless tag identification that corresponds to the wireless tag.
    [0017]
    17. “STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK”, according to claim 11, characterized in that the stock list also contains a present status indicator corresponding to each of the wireless tag identifications, the present status indicator providing an indication of the presence on the secure storage device of the wireless tag that corresponds to the wireless tag identification.
    [0018]
    18. "STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK", according to claim 11, characterized in that the specific search sent to the wireless tag contains a unique identification code that corresponds to the wireless tag.
    [0019]
    19. "STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK", according to claim 18, characterized in that the unique identification code is the checksum value of the wireless tag identification that corresponds to the wireless tag.
    [0020]
    20. "STOCK MONITORING SYSTEM TO MONITOR A PRODUCT STOCK", according to claim 11, characterized in that the processor is configured, to command all wireless labels verified in the verification step so that they leave the quiescent state after completion the scan operation.
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    同族专利:
    公开号 | 公开日
    RU2012115091A|2013-10-27|
    ZA201201734B|2013-08-28|
    EP2481014A2|2012-08-01|
    EP2481014A4|2013-07-17|
    WO2011035329A3|2011-06-16|
    CN102498494A|2012-06-13|
    KR20120085785A|2012-08-01|
    BR112012005575A2|2016-05-17|
    MX2012003144A|2012-06-12|
    JP2013505179A|2013-02-14|
    RU2568319C2|2015-11-20|
    CA2773332C|2017-10-31|
    US8284059B2|2012-10-09|
    CA2773332A1|2011-03-24|
    CN102498494B|2016-05-18|
    US20110068922A1|2011-03-24|
    WO2011035329A2|2011-03-24|
    KR102094951B1|2020-03-31|
    KR20180051677A|2018-05-16|
    AU2010295293A1|2012-03-29|
    AU2010295293B2|2016-09-15|
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    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-02-18| B07A| Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]|
    2020-07-21| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-01| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 01/12/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/563,986|US8284059B2|2009-09-21|2009-09-21|Inventory monitoring and verification system|
    US12/563,986|2009-09-21|
    PCT/US2010/049713|WO2011035329A2|2009-09-21|2010-09-21|Inventory monitoring and verification system|
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