CN109363868B - Medical medicine cart capable of automatically recording use marks - Google Patents

Abstract

The utility model discloses a medical medicine vehicle capable of automatically recording a use trace. The medical drug cart includes: the medicine weighing device comprises a vehicle body (1), a storage unit and a recording unit (5), wherein a weighing unit (6) is arranged in the storage unit, the weighing unit (6) weighs medicines placed in the storage unit, and the recording unit (5) records weighing results of the weighing unit (6), wherein the storage unit comprises a refrigerating storage unit (3) and an encrypting storage unit (4). The medical medicine trolley is provided with the weighing unit and the recording unit, so that the weight change condition of the medicine stored in the medical medicine trolley can be recorded, the use condition of the medicine in the medical medicine trolley can be automatically recorded, and good traceability is provided. In addition, the medical drug vehicle provided by the utility model is provided with the refrigerating storage unit (3) and the encrypting storage unit (4), so that the requirements of low-temperature storage and encrypting management can be met.

Description

A medical drug cart that can automatically record traces of use

Technical field

The invention relates to the technical field of medical devices, and in particular to a medical drug cart that can automatically record traces of use.

Background technique

The vast majority of current medicine carts only have the function of storing medicines. A small number of drug carts can enter patient information before using drugs, collect narcotic drugs according to the formulated medication plan, and print narcotic drug prescriptions, but they cannot record the dosage of drugs.

Most of the functions of existing drug carts are limited to classified storage of drugs at room temperature; they do not have the storage conditions for cryogenic storage. Drugs that require cryogenic storage need to be collected and recycled repeatedly, which wastes a lot of manpower and material resources, and the quality of the recycled drugs is difficult to guarantee. Clinical problems There are certain potential dangers after application.

The existing medicine carts only store medicines, have simple functions, and cannot effectively reduce the workload of medical staff. After using the drug, you need to manually add the medication record to the anesthesia record sheet. The error rate of manual addition varies from person to person and is not controllable.

Therefore, it is desirable to have a technical solution to overcome or at least alleviate at least one of the above-mentioned disadvantages of the prior art.

Contents of the invention

The object of the present invention is to provide a medical drug cart that can automatically record usage traces, so as to overcome or at least alleviate at least one of the above-mentioned shortcomings of the prior art.

In order to achieve the above object, the present invention provides a medical drug cart that can automatically record traces of use. The medical drug cart includes: a cart body, and a storage unit and a recording unit arranged on the cart body,

A weighing unit is provided in the storage unit, and the weighing unit weighs the weight of the medicine placed in the storage unit,

The recording unit records the weighing results of the weighing unit,

Wherein, the storage unit includes a refrigerated storage unit and an encrypted storage unit.

Preferably, each storage unit has one or more storage areas, and a weighing unit is provided at the bottom of at least part of the storage area.

Preferably, each storage unit has an opening detection device. When the storage unit is opened, the opening detection device triggers the corresponding weighing unit to weigh, and sends the weighing result to the recording unit for recording, and the recording The information recorded by the unit includes: weighing unit number, weighing result and time.

Preferably, the encrypted storage unit is locked with a fingerprint lock, and the fingerprint lock is linked with an opening detection device corresponding to the encrypted storage unit. When the fingerprint lock is unlocked, the opening detection device triggers the corresponding weighing unit. Weighing is performed and the weighing results are sent to the recording unit.

Preferably, the weighing unit and the recording unit are both connected to the CAN bus, each weighing unit has a bus interface and two control interfaces, the bus interface of each weighing unit is connected to the CAN bus, and the The weighing units are connected in series through the control interfaces. The control interface B of the previous weighing unit is connected to the control interface A of the following weighing unit. The control interface A of the first weighing unit is grounded. The control interface A of the last weighing unit is connected to the ground. The control interface B of the heavy unit is left floating.

Preferably, addresses are assigned to the plurality of weighing units in the following method,

Step S1: Set the B control interface of all weighing units to high, and detect the voltage of the control interface A of each weighing unit. If the voltage of the control interface A is high, the weighing unit remains in the process of detecting the voltage of the control interface A. , if the voltage of control interface A is low, the weighing unit detects whether it has received the CAN message with the address value x. If it has not received it, go to step S2. If it has been received, go to S3, where x is an integer greater than or equal to zero. ;

Step S2: This weighing unit sets its own address value to x=0 and goes to step S4;

Step S3: This weighing unit sets its own address value to x=x+1 and goes to step S4;

Step S4: Determine whether x is less than n. If not, the address allocation ends. The weighing unit sends an address allocation end command through the CAN bus to notify other weighing units to enter the normal mode, and at the same time it also enters the normal mode; if it is less than n, Then go to step S5, where n = the total number of weighing units minus 1;

Step S5: The weighing unit sets its control interface B to low and sends its own address value through the CAN bus. Then the weighing unit that completes its own address allocation checks whether it has received a command to end the address allocation. If not, it continues to detect ; If yes, enter normal mode.

Preferably, the medical drug cart further includes a timer, which triggers the weighing unit to perform weighing at a set time interval and sends the weighing result to the recording unit.

Preferably, the refrigerated storage unit includes one or more refrigerated drawer cavities, each refrigerated drawer cavity is provided with a refrigerated drawer; the refrigerated drawer is provided with a partition board, and the partition board includes a bottom plate and a grid-like structure. The grid plate divides the space in the refrigeration drawer into two sub-spaces, upper and lower. The sub-space below the bottom plate is used to place ice bags, and the sub-space above the bottom plate is used to store medicines. The grid plate is arranged above the bottom plate, and the weighing unit is also arranged above the bottom plate; or

The medical drug cart includes a refrigeration device disposed at the lower part of the cart body, and the refrigeration device supplies cold energy to the refrigerated storage unit.

Preferably, the medical drug cart includes an operating console, the operating console is translucent or transparent, and the refrigerated storage unit and the encrypted storage unit are provided below the operating console.

Preferably, the medical drug cart includes a wireless communication unit that is communicatively connected to the recording unit and sends the weighing results or drug access information recorded by the recording unit to a backend server.

The medical drug cart of the present invention is equipped with a weighing unit and a recording unit, so that it can record the weight changes of the drugs stored in the medical drug cart, thereby automatically recording the usage of the drugs in the medical drug cart, and providing good traceability. In addition, the medical drug cart of the present invention has both a refrigerated storage unit and an encrypted storage unit, which can well meet the needs of low-temperature storage and encryption management.

Description of drawings

Figure 1 is a schematic structural diagram of a medical drug cart according to an embodiment of the present invention.

Figure 2 is a schematic circuit diagram of a medical drug cart according to an embodiment of the present invention.

Figure 3 is a circuit schematic diagram of a medical drug cart according to another embodiment of the present invention.

Figure 4 is a schematic diagram of a memory unit.

Figure 5 is a schematic top view of another storage unit.

Figure 6 is a schematic top view of an embodiment of the refrigerated storage unit.

FIG. 7 is a schematic front view of the refrigerated storage unit shown in FIG. 6 .

Reference signs:

Detailed ways

In the drawings, the same or similar reference numbers are used to represent the same or similar elements or elements with the same or similar functions. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientations or positional relationships indicated by "bottom", "inner", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the devices or components referred to. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the invention.

In the present invention, the medical drug cart is a mobile drug storage cabinet or storage device, which is generally used to store commonly used drugs and emergency drugs. Medical drug carts can be movable in places where drugs are needed to facilitate clinical use of drugs.

In the illustrated embodiment, the medical drug cart mainly includes the following structures: operating table 12, drawers, item racks, storage cabinets or storage boxes 21, universal wheels 11, etc. However, the medical drug of the present invention is not limited to the structure shown in the illustrated embodiment.

For medicines, it is usually required to separate and store them according to needs. For example, psychotropic drugs and some narcotic drugs commonly used by anesthesiologists need to be collected from a warehouse managed by dedicated personnel in accordance with the national "Regulations on the Administration of Narcotic Drugs and Psychotropic Drugs" before use. During use, the recipient is responsible for the management and storage of some drugs. Strict storage conditions, such as cortisone (2-8 degrees Celsius, protected from light), propofol (2-25 degrees Celsius), and psychotropic drugs should be strictly managed.

For some specific medical drug carts, such as narcotic drug carts dedicated to operating rooms, due to the need to temporarily store narcotic drugs and rescue drugs, they need to be properly stored. The existing solution is to build a password safe in the drug cart, which is safe. The level has improved. The built-in password safe increases the security of narcotic drugs to a certain extent, but the password entry and replacement operations are complicated, and the default public password makes the proper storage of narcotic drugs often a mere formality.

The medical drug cart of the present invention can properly store narcotic drugs and perform classified and authorized management of drugs. Moreover, the medical drug cart of the present invention can automatically collect traces of drug use and automatically synchronize usage records. In addition, the medical drug cart of the present invention can automatically electronically manage the inventory of drugs and realize automatic early warning of low inventory.

Specifically, as shown in the figure, the medical drug cart of the present invention includes: a cart body 1, and a storage unit and a recording unit 5 arranged on the cart body 1,

A weighing unit 6 is provided in the storage unit, and the weighing unit 6 weighs the weight of the medicine placed in the storage unit,

The recording unit 5 records the weighing results of the weighing unit 6,

Among them, the storage unit includes a conventional storage unit 2, a refrigerated storage unit 3 and an encrypted storage unit 4.

In this patent, a storage unit refers to a storage space that can be opened and closed independently. That is to say, the medical drug cart of the present invention may include one or more conventional storage units 2 and one or more refrigerated storage units 3 (two refrigerated storage units located under the operating console are shown in Figure 1) ; and/or one or more encrypted storage units 4 (one encrypted storage unit 4 is shown in Figure 1). It can be understood that the medical drug cart of the present invention may not include a conventional storage unit, but only include a refrigerated storage unit 3 and an encrypted storage unit 4 . For example, the storage units are all configured as encrypted storage units, and some of the encrypted storage units also have refrigerated storage functions.

The storage unit may adopt any suitable structure, size and material. Just provide storage space. Structurally, storage units can be storage cabinets, drawers, storage racks, etc. Partitions such as partitions can be further provided in the storage cabinet or drawer to form a smaller divided space. In addition, one storage unit may include multiple storage cabinets or multiple drawers, and may also include one or more storage cabinets and one or more drawers at the same time. Advantageously, the storage unit has an opening and closing structure with a door, a flap or a similar function. For example, the outer panel of the drawer can be regarded as the opening and closing structural member.

The conventional storage unit 2 is mainly used to store commonly used non-controlled drugs or rescue drugs and other non-drug supplies. The refrigerated storage unit 3 is mainly used to store medicines or other items that require refrigerated storage. The encrypted storage unit 4 is used to store controlled drugs. For example, the encrypted storage unit 4 is used to temporarily store narcotic drugs. That is to say, a conventional storage unit is a storage unit without refrigeration function and encryption function. Even conventional storage units or part of their storage areas may not be equipped with locks and weighing units.

Advantageously, the refrigerated storage unit 3 is equipped with a temperature-adjustable refrigeration system and has a high and low temperature alarm function. Alarm when the temperature is too high or too low.

Preferably, each storage unit has a plurality of separated storage areas, with a weighing unit 6 disposed at the bottom of at least part of the storage area. A weighing unit can be set at the bottom of each storage area, or only one weighing unit can be set at the bottom of some storage areas. All weighing units are communicated with the recording unit. The communication connection can be direct or indirect communication connection. For example, in one embodiment, all weighing units are connected to a control unit through encoders, and the control unit is connected to the recording unit.

In another embodiment, all weighing units (usually multiple weighing units) are individually connected to the CAN bus, and the recording unit is also connected to the CAN bus. Only one weighing unit can transmit data to the recording unit via the CAN bus at a time. Thereby simplifying the circuit structure and simplifying the layout of the circuit. At the same time, the corresponding control software can be made simpler.

It can be understood that each storage unit may have one or more storage areas. Advantageously, each storage area only stores one type of medicine, so that it is easier to automatically record and manage the weight of medicines stored in each storage area, and determine the quantity of medicines stored based on the weight. From this, the use of medicines or medicines is finally determined.

In the case where a plurality of medicines are stored in one storage area, if the medicines have different unit weights, the weights of the two or more medicines stored cannot be directly derived from the currently measured weights. However, through each change in weight, the weight of each drug taken (change in weight) can be calculated, thereby further determining the drug usage in a certain period of time. However, if there are two drugs with the same or substantially the same weight, other methods are needed to assist in determining the use of the drugs, for example, by adding a barcode identification method.

It should be noted that weight monitoring can be performed on only part of the storage units. In other words, the weighing unit is only provided in some storage units.

The weighing unit can use any electronic weighing device, as long as the electronic weighing device can weigh and output the weighing results (weighing information) in electronic form. Advantageously, the electronic weighing device outputs digital weighing results. For example, the weighing unit is an embedded electronic balance. The electronic balance can sensitively respond to the weight of the inserted liquid or medicine.

It can be understood that the medical drug cart will be provided with multiple weighing units to monitor the weight of multiple storage areas. If each storage area corresponds to a medicine, the weight and usage of multiple medicines can be monitored. Advantageously, the plurality of weighing units are identical weighing units.

Since the CAN bus has the characteristics of a small number of lines (only two lines CAN_H and CAN_L), no need for a central processing unit (main control unit), flexible communication methods, and the ability to connect multiple electronic units, one embodiment of the present invention uses the CAN bus to Connect various electronic units or devices. CAN is the abbreviation of Controller Area Network, and its Chinese name is Controller Area Network. Specifically, a CAN bus is used to connect the multiple weighing units and the recording unit 5 to transmit the weighing information of each weighing unit 6 to the recording unit 5 . That is to say, the plurality of weighing units 6 and recording units 5 are all connected to the CAN bus.

Since each weighing unit has the same physical structure, it may be difficult for the CAN bus to effectively identify a specific weighing unit during communication. To this end, in the present invention, hard wires other than the CAN bus will be used to connect multiple weighing units in series. More specifically, each weighing unit 6 has a bus interface and two control interfaces (control interface A and control interface B). The bus interface of each weighing unit 6 is connected to the CAN bus. The plurality of weighing units 6 are connected in series through the control interfaces, wherein the control interface B of the previous weighing unit is connected to the control interface A of the following weighing unit, and the control interface A of the first weighing unit Grounded, the control interface B of the last weighing unit is left floating.

In this way, multiple weighing units are physically distinguished in a simple way. Therefore, when addressing, it can accurately correspond to a specific weighing unit; or addresses can be assigned to all weighing units in an orderly manner.

For example, a weighing unit can be assigned an address in the following way.

Step S1: Set the B control interface of all weighing units to high, and detect the voltage of the control interface A of each weighing unit. If the voltage of the control interface A is high, the weighing unit has been in the process of detecting the voltage of the control interface A. If the voltage of control interface A is low (ground), the weighing unit detects whether it has received a CAN message with the address value x. If it has not received it, go to step S2. If it has been received, go to S3, where x is greater than or equal to zero. integer (binary number);

Step S2: This weighing unit sets its own address value to x=0 and goes to step S4;

Step S3: This weighing unit sets its own address value to x=x+1 and goes to step S4;

Step S4: Determine whether x is less than n. If not, the address allocation ends. The weighing unit sends an address allocation end command through the CAN bus to notify other weighing units to enter the normal mode, and at the same time it also enters the normal mode; if it is less than n, Then go to step S5, where n = the total number of weighing units minus 1;

Step S5: The weighing unit sets its control interface B to low and sends its own address value through the CAN bus. Then the weighing unit that completes its own address allocation checks whether it has received a command to end the address allocation. If it has not received it, then Always detect; if received, enter normal mode. Normal mode is the mode of waiting for instructions or performing access.

Each embedded electronic balance corresponds to a storage area, or weighing area. The tray of the embedded electronic balance is the bottom of the storage area. Stored medicines are placed directly on the tray of the embedded electronic balance. Advantageously, corresponding grooves can be provided on the tray, and the shape of the groove corresponds to the medicines to be stored, so as to place and protect the corresponding medicines and prevent the medicines from being displaced or collided when the vehicle is moving. . For example, the groove is configured to correspond to an ampoule, vial or syringe. Furthermore, ampoules and vials can be used as a weighing platform with 10 or 20 ampoules and a weighing unit, for example. For example, in FIG. 4 , 5 storage areas in the upper part, 3 storage areas in the middle part, and 5 storage areas in the lower part are shown. In FIG. 5 , 2 storage areas on the right side and 3 storage areas on the right side are shown.

The recording unit 5 may use any suitable recording device or device. For example, flash memory, hard disk, etc. are used for recording. Advantageously, the recording unit 5 records the access information of medicines in real time, and synchronizes the access information to the backend system (for example, anesthesia information system, or the drug management system of the entire hospital, etc.). In a specific embodiment, the recording unit 5 records the drug usage and time points within each syringe segmentation in real time. Advantageously, each piece of information recorded by the recording unit includes the weighing unit number (indicating which medicine), the weighing result (indicating the amount taken) and the time (indicating the time of taking). As a result, the use of medicines can be accurately recorded. The weighing unit number can be understood as the ID number of the weighing unit, or the weighing unit address value below. The time may be the time of weighing or the time of recording. Advantageously, said time is the time at which the recording takes place.

Preferably, each storage unit has an opening detection device 7 . When the storage unit is opened, the opening detection device 7 triggers the corresponding weighing unit 6 to weigh, and sends the weighing result to the recording unit 5 . It can be understood that the weighing unit can also perform real-time weighing at all times. However, this linkage method of triggering weighing when it is turned on is beneficial to saving power, extending the service life of the weighing unit and reducing its cost.

The opening detection device 7 can adopt any appropriate device or detection method, as long as it can detect the opening of the storage unit and send out a detection signal. In one embodiment, the opening detection device 7 is a micro switch. When the storage unit is opened, that is, when the opening and closing structural members of the storage unit deviate from the closed position, the micro switch is in the closed position, so that the power supply circuit of the weighing unit is connected, so that the weighing unit works and transmits the weighing to the recording unit. Focus on results. When the storage unit is closed, the micro switch is in the off position, cutting off the power supply to the weighing unit, and thus the weighing unit stops working. It can be understood that the opening detection device 7 can also use a photoelectric switch or the like.

The encrypted storage unit 4 can be locked or locked in any way. For example, a password lock or a special key can be used. The advantage is that it can be locked through fingerprints, gesture encryption, and voice recognition. The setting and modification are simple and convenient, and the modification process will be automatically recorded and can be combined with the token.

Preferably, the encrypted storage unit 4 is locked using a fingerprint lock 41 . In this way, when the input fingerprint matches the pre-stored fingerprint, the fingerprint lock can be opened, the encrypted storage unit can then be opened, and medicines that require strict management can be taken or put in. For example, narcotic drugs, etc. Furthermore, since the fingerprint lock is used for locking, the record of taking or putting in corresponds to the specific operator, which further improves traceability and reduces the possibility of wrong taking or taking. . It is understandable that for fingerprint locks, multiple fingerprint passwords can be set. In other words, you can set multiple people to have permission to open the encrypted storage unit. This is also within the protection scope of the present invention.

Preferably, the fingerprint lock 41 is linked with the opening detection device 7 corresponding to the encrypted storage unit 4. When the fingerprint lock 41 is unlocked, the opening detection device 7 triggers the corresponding weighing unit 6 to weigh, and weighs. The weighing results are sent to the recording unit 5 .

Preferably, the medical drug cart further includes a timer 8 , which triggers the weighing unit 6 to perform weighing at a set time interval and sends the weighing result to the recording unit 5 . The set time interval may be called the first weighing time interval or the regular weighing time interval, for example, 1 hour or 10 minutes. It can be understood that the weighing unit can also work and detect weight in real time. However, this method affects the service life of the weighing unit or will increase the cost of the weighing unit. Especially because some embodiments of the present invention will use multiple weighing units to detect the weight of multiple different drugs, the disadvantages of real-time weighing will be more prominent.

Preferably, the medical drug cart further includes an alarm unit that sends an alarm signal when a specific situation occurs. The specific circumstances include, for example: the medical drug cart is violently damaged, or the weight of the drug changes abnormally, or the temperature in the refrigerated area is abnormal, or the password is violently cracked, or the battery power is lower than the set value, and communication abnormalities, etc. The specific form of the alarm signal can be a sound alarm, a light alarm, or a combination of the two. It can also communicate with the backend server while performing sound and light alarms, and send the alarm signal to the backend server or to the handheld terminal of the relevant medical staff. It will be handled promptly by background monitoring personnel and/or relevant medical staff.

Monitoring of violent vandalism of medical drug trucks can be carried out by any appropriate method. For example, a collision sensor can be set up to issue an alarm when the detected collision intensity (local acceleration value or force value) exceeds a set threshold.

In another optional embodiment, if incorrect passwords are entered for the encrypted storage unit multiple times in a row, an alarm will also be issued.

In another optional embodiment, if the medical drug cart is forcibly powered off (such as removing the battery or cutting off certain circuits, especially cutting off certain monitoring-related lines), or the battery power is lower than the set threshold, an alarm will also be issued. Call the police. In this optional embodiment, a backup power supply independent of the vehicle power supply is provided for the alarm unit and the wireless communication unit. The backup power supply, alarm unit and wireless communication unit are advantageously arranged in a concealed manner or in a manner that is not easily destroyed. For example, all or major parts of the backup power supply, alarm unit, wireless communication unit and related circuits are provided in the encrypted storage unit.

Abnormal changes in the weight of the medicine refer to, for example, the change in the weight of the medicine in the storage unit exceeding the set threshold when the opening detection device does not detect the opening of the storage unit. This weight change is detected, for example, by scheduled weighing triggered by a timer, or by continuous real-time weighing. Advantageously, after the timer-triggered scheduled weighing detects abnormal changes in drug weight, the corresponding weighing unit is maintained for frequent weighing (for example, weighing every 10 seconds, 30 seconds, or every minute, and reports Restore the results to the recording unit). This real-time weighing is also called frequent weighing, and its weighing time interval (second weighing time interval) is much smaller than the weighing time interval normally triggered by the timer. If the weight does not change within a timer trigger interval, the frequent weighing will be cancelled.

Preferably, the medical drug cart includes a refrigeration device 31 arranged at the lower part of the cart body 1 . The refrigeration device 31 supplies cooling energy to the refrigerated storage unit 3 . Advantageously, the refrigeration device 31 is linked with a temperature sensor to maintain the temperature within an appropriate range. It will be appreciated that two or more different temperature zones can be set. The temperature sensor can be linked with an alarm device to provide an alarm when the temperature is too low or too high.

Preferably, the refrigerated storage unit 3 includes one or more refrigerated drawer cavities, each refrigerated drawer cavity is provided with a refrigerated drawer 32; the refrigerated drawer 32 is provided with a partition plate 33, and the partition plate 33 includes a bottom plate 331. and a grid plate 332 with a grid-like structure. The bottom plate 331 divides the space in the refrigeration drawer 3 into two upper and lower sub-spaces. The sub-space below the bottom plate 331 is used to place ice bags, and the sub-space above the bottom plate 331 For storing medicines, the grid plate 332 is arranged above the bottom plate 331 , and the weighing unit 6 is also arranged above the bottom plate 331 .

Preferably, the medical drug cart includes an operation console 10 , and the refrigerated storage unit 3 and the encrypted storage unit 4 are arranged below the operation console 10 . Advantageously, the refrigerated storage unit 3 is arranged below the encrypted storage unit 4 . In an alternative embodiment, the console 10 is translucent or transparent. This allows visibility of items stored in the storage area located directly under the console. This helps improve the intuitiveness of observation.

Preferably, the medical drug cart includes a wireless communication unit 51 that is communicatively connected to the recording unit 5 and sends the weighing results or drug access information recorded by the recording unit 5 to the backend server.

Preferably, the medical drug cart is provided with universal wheels at the bottom of the cart body. Thus, it is convenient to push the medical drug cart.

A driving device such as a motor can also be provided on the medical drug cart to drive the drug cart for movement. Preferably, the medical drug vehicle is an automatic guided transport vehicle. Able to operate autonomously or under the control of a control server. It can be understood that, in this case, the medical drug vehicle may adopt any appropriate automatic driving device. Moreover, various additional devices such as a vehicle body and a storage unit on the vehicle body may be provided on the autonomous driving chassis platform.

Preferably, the medical drug cart includes a display unit, and the display unit is a touch display. Thus, the display unit can be used as an input device at the same time. For example, used for gesture unlocking, etc. The display can display the quantity of medicines in stock in the medicine cart. In addition, as a touch display, it can be used to set the drug name, concentration and syringe type in each segment (for example, input through menu selection or soft keyboard). If necessary, other peripherals such as hard keyboard and mouse can be configured.

It can be understood that the medical drug cart may include a central control unit serving as the control center or brain of the entire medical drug cart. For example, the central control unit can use industrial control processor chips such as Z80 and 8086, programmable logic circuits (PLC) or programmable logic gate arrays (FPGA). When necessary, the central control unit can set up necessary peripheral circuits such as I/O, memory, and external timers. In addition, the medical drug cart may also include a power supply system (for example, a rechargeable battery). The central control unit can also be a computer system, using higher-end processor chips and memory chips to further improve data processing and interaction performance.

The medical drug cart of the present invention is equipped with a weighing unit and a recording unit, so that it can record the weight changes of the drugs stored in the medical drug cart, thereby automatically recording the usage of the drugs in the medical drug cart, and providing good traceability. In addition, the medical drug cart of the present invention has both a refrigerated storage unit 3 and an encrypted storage unit 4, which can well meet the needs of low-temperature storage and encryption management.

The medical drug cart of the present invention can be equipped with appropriate software systems to further improve performance. The software system is mainly used to cooperatively control various devices and units. In order to better realize the functions of the medical drug cart of the present invention, and to better serve application scenarios such as surgery. Taking anesthesia surgery as an example, the functions include the following.

1. The embedded electronic balance measures the weight of the liquid in the syringe in real time, and automatically generates a usage record of the drug based on the set drug type and concentration of the syringe. The format is "xx:xx:xx, XX injection, xxug" ,iv" (example).

2. The usage records described can be synchronized to the anesthesia information system to avoid manual addition. At the same time, the software system provides manual modification function and one-way transmission without feedback.

3. After the patient's anesthesia is completed, the totaling function can be provided to view the total amount of all drugs used by the patient with one click to facilitate cost settlement.

4. Based on the weight calculation of ampoules, vials and other drugs, through calculation or data processing of the software system, the quantity of drugs in stock can be viewed with one click.

5. Through the software system, the drug name, concentration, unit dose, number of bottles, etc. for each segment (minimum storage interval, corresponding to one weighing unit) can be set.

6. The software system can provide patient-based drug usage reports for easy review. Every time you take medicine, you need to enter patient-related information. For example, before taking medicines, use a scanner corresponding to the medical medicine cart to scan the barcode or RFID tag on the "Medication Order" or similar documents, thereby inputting patient information. Patient information can be any ID such as ID number, name, medical insurance number, patient number, etc., especially an ID with unique identification.

7. Through the software system, the name and quantity of the placed drugs can be recorded at any time, corresponding to the subsequent infusion work.

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Those of ordinary skill in the art should understand that the technical solutions described in the foregoing embodiments can be modified, or some of the technical features can be equivalently replaced; these modifications or substitutions do not deviate from the essence of the corresponding technical solutions of the present invention. spirit and scope of the technical solutions of the embodiments.

Claims (8)

1. A medical drug cart that can automatically record traces of use, characterized in that it includes: a cart body (1), and a storage unit and a recording unit (5) provided on the cart body (1), A weighing unit (6) is provided in the storage unit, and the weighing unit (6) weighs the weight of the medicine placed in the storage unit, The recording unit (5) records the weighing results of the weighing unit (6), Wherein, the storage unit includes a refrigerated storage unit (3) and an encrypted storage unit (4), The weighing unit (6) and the recording unit (5) are both connected to the CAN bus. Each weighing unit (6) has a bus interface and two control interfaces. The bus interface of each weighing unit (6) Connected to the CAN bus, the weighing units (6) are connected in series through the control interface, where the control interface B of the previous weighing unit is connected to the control interface A of the following weighing unit, and the first The control interface A of the weighing unit is grounded, and the control interface B of the last weighing unit is left floating. Addresses are assigned to the multiple weighing units in the following method, Step S1: Set the B control interface of all weighing units to high, and detect the voltage of the control interface A of each weighing unit. If the voltage of the control interface A is high, the weighing unit remains in the process of detecting the voltage of the control interface A. , if the voltage of control interface A is low, the weighing unit detects whether it has received the CAN message with the address value x. If it has not received it, go to step S2. If it has been received, go to S3, where x is an integer greater than or equal to zero. ; Step S2: This weighing unit sets its own address value to x=0 and goes to step S4; Step S3: This weighing unit sets its own address value to x=x+1 and goes to step S4; Step S4: Determine whether x is less than n. If not, the address allocation ends. The weighing unit sends an address allocation end command through the CAN bus to notify other weighing units to enter the normal mode, and at the same time it also enters the normal mode; if it is less than n, Then go to step S5, where n = the total number of weighing units minus 1; Step S5: The weighing unit sets its control interface B to low and sends its own address value through the CAN bus. Then the weighing unit that completes its own address allocation checks whether it has received a command to end the address allocation. If not, it keeps checking; If so, enter normal mode. 2. The medical drug cart that can automatically record usage traces as claimed in claim 1, characterized in that each storage unit has one or more storage areas, and a weighing unit is provided at the bottom of at least part of the storage area ( 6). 3. The medical drug cart that can automatically record traces of use according to claim 1, characterized in that each storage unit has an opening detection device (7), and when the storage unit is opened, the opening detection device (7) The corresponding weighing unit (6) is triggered to perform weighing, and the weighing result is sent to the recording unit (5) for recording. The information recorded by the recording unit includes: weighing unit number, weighing result and time. 4. The medical drug cart that can automatically record traces of use according to claim 3, characterized in that the encrypted storage unit (4) is locked by a fingerprint lock (41), and the fingerprint lock (41) is connected to the fingerprint lock (41). The corresponding opening detection device (7) of the encrypted storage unit (4) is linked. When the fingerprint lock (41) is unlocked, the opening detection device (7) triggers the corresponding weighing unit (6) to weigh, and the The weighing results are sent to the recording unit (5). 5. The medical drug cart that can automatically record traces of use according to any one of claims 1 to 4, characterized in that the medical drug cart further includes a timer (8), and the timer (8) is The set time interval triggers the weighing unit (6) to weigh, and sends the weighing result to the recording unit (5). 6. The medical drug cart that can automatically record traces of use according to any one of claims 1 to 4, characterized in that the refrigerated storage unit (3) includes one or more refrigerated drawer cavities, each refrigerated drawer The cavity is provided with a refrigeration drawer (32); the refrigeration drawer (32) is provided with a partition plate (33), and the partition plate (33) includes a bottom plate (331) and a grid plate (332) with a grid-like structure. The bottom plate (331) divides the space in the refrigeration drawer (32) into two sub-spaces, upper and lower. The sub-space below the bottom plate (331) is used for placing ice bags, and the sub-space above the bottom plate (331) is used for storage. For medicines, the grid plate (332) is arranged above the bottom plate (331), and the weighing unit (6) is also arranged above the bottom plate (331); or The medical drug cart includes a refrigeration device (31) arranged at the lower part of the cart body (1), and the refrigeration device (31) supplies cooling energy to the refrigerated storage unit (3). 7. The medical drug cart that can automatically record traces of use according to any one of claims 1 to 4, characterized in that the medical drug cart includes an operating console (10), and the operating console is translucent or transparent , the refrigerated storage unit (3) and the encrypted storage unit (4) are arranged below the operation console (10). 8. The medical drug cart that can automatically record traces of use according to any one of claims 1 to 4, characterized in that the medical drug cart includes a wireless communication unit (51), and the wireless communication unit (51) Communicate with the recording unit (5) to send the weighing results or medicine access information recorded by the recording unit (5) to the backend server.