CN109589234B - Medical drug cart system - Google Patents

Abstract

The invention discloses a medical drug cart system. The medical drug cart system comprises: the weighing system comprises a vehicle body (1), a plurality of storage areas, a recording unit (5) and a central control unit (8), wherein weighing units (6) are arranged in the storage areas, the weighing units (6) weigh the weights of medicines placed in the corresponding storage areas, the weighing results are sent to the central control unit (8), the weighing weights of the weighing results are compared with the latest stored weighing weights, and if the difference between the weighing weights is larger than a set threshold value, the recording unit (5) records the weighing results. The medical drug vehicle is provided with the weighing unit and the recording unit, so that the weight change condition of the drugs stored in the medical drug vehicle can be recorded, the use condition of the drugs in the medical drug vehicle can be automatically recorded, and good traceability is provided.

Description

A medical drug cart system

technical field

The invention relates to the technical field of medical devices, in particular to a medical drug cart system.

Background technique

Most of the current medicine pickup trucks only have the function of medicine storage. A small number of drug carts can enter patient information before using drugs, receive narcotic drugs according to the formulated medication plan, and print narcotic drug prescriptions, but cannot record the amount of drugs.

The functions of the existing medicine carts are mostly limited to the classified storage of medicines at room temperature; they do not have storage conditions for low-temperature storage, and medicines requiring low-temperature storage need to be collected and recycled repeatedly, wasting a lot of manpower and material resources, and the quality of the recovered medicines is difficult to guarantee. There is a certain potential danger after application.

The existing medicine pickup truck only stores medicines, has simple functions, and cannot effectively reduce the workload of medical staff. After using the drug, it is necessary to manually add the medication record on the anesthesia record sheet. The error rate of manual addition varies from person to person and is not controllable.

Therefore, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned deficiencies of the prior art.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a medical drug cart system to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.

In order to achieve the above object, the present invention provides a medical drug cart system, the medical drug cart system includes: a car body, and a plurality of storage areas, a recording unit and a central control unit arranged on the car body,

A weighing unit is provided for at least a part of the plurality of storage areas, the weighing unit weighs the medicines placed in the corresponding storage area, and sends the weighing result to the central control unit,

When receiving the weighing result of the weighing unit corresponding to a certain storage area, the central control unit compares the weighing result of the weighing result with the newly stored weighing weight, and if the difference between the two is greater than Setting a threshold, the central control unit controls the recording unit to record the weighing result,

The weighing result recorded by the recording unit includes: weighing unit number or storage area number, weighing weight and time.

Preferably, the same kind of medicine is placed in each storage area, and the central control unit counts the total dosage of a single patient in the following manner:

a. Calculate the changes in the weighing weight in each storage area within a certain period of time, thereby determining the corresponding quantities of various medicines taken by patients undergoing surgery during this period of time; or,

b. The medical drug cart system has an input unit, and the input unit acquires patient-related information before taking medicine each time, and the weighing result recorded by the recording unit further includes: the patient-related information, the The central control unit retrieves the patient-related information of the single patient, and statistically calculates the total dosage of the single patient.

Preferably, the same kind of medicine is placed in each storage area, and the central control unit counts the medicine stock stored in the entire medical medicine cart in the following manner,

The central control unit searches the records of the recording unit with the weighing unit number or the storage area number, and calculates the drug inventory in each storage area statistically, and sends an alarm signal when the inventory of a certain drug is lower than the minimum value.

Preferably, one or more storage areas correspond to an opening detection device, and when the storage area is opened, the opening detection device triggers the corresponding weighing unit to perform weighing, and sends the weighing result to the recording unit or other device. recorded by the central control unit.

Preferably, part of the storage area is an encrypted storage area, the encrypted storage area is locked by a fingerprint lock, and the fingerprint lock is linked with the opening detection device corresponding to the encrypted storage area. When the fingerprint lock is unlocked, the Turning on the detection device triggers the corresponding weighing unit to perform weighing, and sends the weighing result to the recording unit or the central control unit for recording.

Preferably, the weighing unit, the recording unit and the central control unit are all connected to the CAN bus, each weighing unit has a bus interface and two control interfaces, and the bus interface of each weighing unit is connected to the CAN bus. CAN bus connection, the weighing units are connected in series through the control interface, wherein the control interface B of the previous weighing unit is connected with the control interface A of the next weighing unit, and the control interface of the first weighing unit is connected in series. A is grounded, and the control interface B of the last weighing unit is left floating.

Preferably, the central control unit assigns addresses to the plurality of weighing cells in the following manner,

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

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

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

Step S4: judge 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, notifying 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, wherein, n=the total number of weighing units minus 1;

Step S5: The weighing unit sets its control interface B to be low, and sends its own address value through the CAN bus, and then the weighing unit that has completed its own address allocation checks whether it has received the command for the end of address allocation, and if not, it is always detected. ; if so, enter normal mode.

Preferably, the central control unit triggers the weighing unit to perform weighing at a set time interval, the weighing unit sends the weighing result to the central control unit, and the central control unit sends the weighing result to the central control unit. The weighing result of the weighing result is compared with the newly stored weighing weight. If the difference between the two is greater than the set threshold, the central control unit controls the recording unit to record the weighing result. record unit.

Preferably, the medical drug cart system includes a refrigerated storage unit, the refrigerated storage unit includes one or more refrigerated drawer cavities, and each refrigerated drawer cavity is provided with a refrigerated drawer; the refrigerated drawer is provided with a partition plate , the partition plate includes a bottom plate and a grid plate with a grid-like structure, the grid plate divides a plurality of storage areas, the bottom plate divides the space in the refrigerating drawer into two upper and lower sub-spaces, and the sub-spaces below the bottom plate The space is used for placing ice packs, the subspace above the bottom plate is used for storing medicines, the grid plate is arranged above the bottom plate, and the weighing unit is also arranged above the bottom plate, wherein the weighing The tray of the heavy unit forms the bottom of the corresponding storage area, and grooves corresponding to the shape of the stored medicines are provided on the tray to accommodate and protect the corresponding medicines.

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

The medical drug cart system of the present invention is provided with a weighing unit and a recording unit, so that the weight change of the drugs stored in the medical drug cart can be recorded, so as to automatically record the use of the drugs in the medical drug cart and provide 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 requirements for low temperature storage and encryption management.

Description of drawings

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

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

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

Figure 4 is a schematic diagram of a memory cell with multiple memory areas.

FIG. 5 is a schematic top view of another memory cell.

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

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

Reference number:

1 body 12 console 2 regular storage unit twenty one storage box 3 refrigerated storage unit 31 refrigeration unit 4 encrypted storage unit 32 refrigerated drawer 5 record unit 41 fingerprint lock 6 weighing unit 81 CAN bus 7 Turn on the detection device 82 timer 8 central control unit 83 Temperature Sensor 9 monitor 84 wireless communication unit 11 Universal wheel

Detailed ways

In the drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having 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", "portrait", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or element. It must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention.

In the present invention, the medical medicine cart is a mobile medicine storage cabinet or storage device, which is generally used for storing commonly used medicines and rescue medicines. The medical drug cart is movably present in the place where the drug needs to be used, which is convenient for the clinical use of the drug.

In the illustrated embodiment, the medical drug cart mainly includes the following structures: an operation table 12, a drawer, an item rack, a storage cabinet or storage box 21, a universal wheel 12, and the like. However, the medical drug of the present invention is not limited to the structures shown in the illustrated embodiments.

For pharmaceutical products, it is usually required to differentiate and preserve as needed. For example, psychotropic drugs and some narcotic drugs commonly used by anesthesiologists need to be collected from warehouses managed by special personnel in accordance with the provisions of the National Regulations on the Administration of Narcotic Drugs and Psychotropic Drugs. Strict storage conditions, such as icosone (2-8 degrees Celsius away from light), propofol (2-25 degrees Celsius), and psychotropic drugs should be strictly managed.

For some specific medical drug carts, for example, for anesthesia drug carts dedicated to operating rooms, anesthetic drugs and rescue drugs need to be stored temporarily, and they need to be properly stored. The existing solution is to build a password safe in the drug cart. level has increased. The built-in password safe increases the security of narcotics to a certain extent, but the password input and replacement operations are complicated, and the default public password makes the proper preservation of narcotics often mere formality.

The medical drug cart of the invention can properly store the narcotic drugs, and can carry out classification and authorization management for the drugs. Moreover, the medical drug cart of the present invention can automatically collect traces of drug taking, and automatically synchronize usage records. In addition, the medical medicine cart of the present invention can automatically perform electronic management on the medicines in stock, so as to realize automatic warning of low stock quantity.

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

A weighing unit 6 is provided in the storage unit, and the weighing unit 6 weighs the medicines placed in the storage unit,

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

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, 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 table are shown in FIG. 1 ) ; and/or one or more encrypted storage units 4 (one encrypted storage unit 4 is shown in FIG. 1 ).

It can be understood that the medical drug cart or the medical drug cart system of the present invention may also 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 set as encrypted storage units, and some of the encrypted storage units also have the function of refrigerated storage.

The storage unit may adopt any suitable structure, size and material. As long as the storage space is available. Structurally, the storage units may be storage cabinets, drawers, storage racks, and the like. Partitions such as partitions can be further arranged in the storage cabinet or drawer to form a smaller partitioned space. In addition, a 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 a door, shutter or similar functional opening and closing structure. For example, the outer side panel of the drawer can be regarded as the said opening and closing structure.

The conventional storage unit 2 is mainly used for storing commonly used non-controlled drugs or rescue drugs and other non-drug supplies. The refrigerated storage unit 3 is mainly used for storing medicines or other items that need to be refrigerated. The encrypted storage unit 4 is used for storing controlled drugs. For example, the encrypted storage unit 4 is used to temporarily store narcotics. That is, the conventional storage unit is a storage unit that does not have a refrigeration function and an encryption function. Even conventional storage units or parts of their storage areas may not be provided with locks and weighing units.

Advantageously, the refrigerated storage unit 3 is provided with a temperature-adjustable refrigeration system and 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 separate storage areas, and a weighing unit 6 is provided at the bottom of at least part of the storage areas. There can be one weighing cell at the bottom of each storage area, or only one weighing cell at the bottom of some storage areas. All weighing cells are in communication with the recording unit. A direct communication connection is possible, and an indirect communication connection is also possible. For example, in one embodiment, all weighing cells are connected via encoders to a control unit, which is connected to the recording unit.

In another embodiment, all the weighing cells (usually a plurality of weighing cells) are each connected to the CAN bus, and the recording units are 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, the circuit structure is simplified, and the layout of the circuit is simplified. At the same time, the corresponding control software can be made simpler.

It will be appreciated that each storage unit may have one or more storage areas. Advantageously, only one medicine is stored in each storage area, so that the weight of medicines stored in each storage area can be more easily recorded and managed automatically, and the quantity of medicines stored can be determined according to the weight. Thereby, the drug or drug taking situation 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 medicines or more medicines stored cannot be directly derived from the currently measured weights though. However, through each weight change, the taken weight of each drug (the amount of weight change) can be calculated, thereby further determining the drug taking situation in a certain period of time. However, if there are two medicines with the same or substantially the same weight, other methods need to be used to assist in determining the taking of the medicines, for example, by adding a barcode identification method to determine.

It should be pointed out that weight monitoring can be performed on only some of the storage units. That is, weighing cells are provided only in part of the storage cells.

The weighing unit may adopt any electronic weighing device as long as the electronic weighing device can weigh and output the weighing result (weighing information) in electronic form. Advantageously, the electronic weighing device outputs a digitized weighing result. For example, the weighing unit is an embedded electronic balance. The electronic balance can sensitively sense the weight of the inserted liquid or medicine.

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

Since the CAN bus has the characteristics of few lines (only two lines of CAN_H and CAN_L), no central processing unit (main control unit), flexible communication mode, and the ability to connect multiple electronic units, one embodiment of the present invention uses the CAN bus to Connect each electronic unit or device. CAN is the abbreviation of Controller Area Network, and the Chinese name is Controller Area Network. Specifically, the multiple weighing units are connected with the recording unit 5 by using the CAN bus, so as to transmit the weighing information of each weighing unit 6 to the recording unit 5 . That is, the plurality of weighing units 6 and the recording unit 5 are all connected to the CAN bus.

Since each weighing unit is identical in physical structure, it may be difficult for the CAN bus to effectively identify a specific weighing unit during communication. For this reason, in the present invention, a plurality of weighing units will be connected in series in sequence by using hard wires other than the CAN bus. More specifically, each weighing cell 6 has a bus interface and two control interfaces (control interface A and control interface B). Said bus interface of each weighing cell 6 is connected to the CAN bus. The plurality of weighing units 6 are connected in series through the control interface, wherein the control interface B of the previous weighing unit is connected with the control interface A of the next weighing unit, and the control interface A of the first weighing unit is connected. Ground, the control interface B of the last weighing unit is left open.

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

For example, addresses can be assigned to the weight cells in the following method.

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

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

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

Step S4: judge 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, notifying 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, wherein, n=the total number of weighing units minus 1;

Step S5: The weighing unit sets its control interface B to be low, and sends its own address value through the CAN bus, and then the weighing unit that completes its own address allocation checks whether it has received the command to end the address allocation, if not, then Always detect; if received, enter normal mode. The normal mode is the mode of waiting for an instruction or making an 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. The stored medicines are placed directly on the tray of the embedded electronic balance. Advantageously, a corresponding groove can be provided on the tray, and the shape of the groove corresponds to the medicine to be stored, so as to place and protect the corresponding medicine, and prevent the medicine from shifting or colliding when the vehicle moves. . For example, the grooves are arranged to correspond to ampoules, vials or syringes. Further, for example, 10/20 ampoules and vials can be used as a weighing platform, and a weighing unit can be provided. For example, in FIG. 4, 5 storage areas in the upper part, 3 storage areas in the middle, and 5 storage areas in the lower part are shown. On the other hand, in FIG. 5 , two storage areas on the right side, and three storage areas on the right side are shown.

The recording unit 5 may employ any suitable recording device or device. For example, a flash memory, a hard disk, or the like is used for recording. Advantageously, the recording unit 5 records the access information of medicines in real time, and synchronizes the access information to a background system (eg, an anesthesia information system, or a medicine management system of the whole hospital, etc.). In a specific embodiment, the recording unit 5 records the drug usage and time points in each syringe segment in real time. Advantageously, each piece of information recorded by the recording unit includes the weighing unit number (indicating what kind of drug), weighing result (indicating the amount taken) and time (indicating the time taken). In this way, the drug taking situation can be recorded accurately. The weighing unit number can be understood as the ID number of the weighing unit, or the address value of the weighing unit below. The time may be the time of weighing or the time of recording. Advantageously, said time is the time at which the recording was made.

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

The opening detection device 7 may adopt any appropriate device or detection method, as long as it can detect the opening of the storage unit and send 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 structure of the storage unit deviates from the closed position, the micro switch is in the closed position, so that the power supply circuit of the weighing unit is turned on, so that the weighing unit works and transmits the weighing unit to the recording unit. heavy results. When the storage unit is closed, the microswitch is in the off position, disconnecting the power supply to the weighing unit, and thus, the weighing unit stops working. It can be understood that, the opening detection device 7 may also adopt a photoelectric switch or the like.

The encrypted storage unit 4 can be locked or locked in any way. For example, a combination lock, or a special key, etc. can be used. Advantageously, it can be locked by fingerprint, 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 by a fingerprint lock 41 . In this way, only when the input fingerprint matches the pre-stored fingerprint, the fingerprint lock can be opened, and then the encrypted storage unit can be opened to take or put medicines that need to be strictly managed. such as narcotics. Further, since the fingerprint lock is used for locking, the record of taking or putting in is corresponding to the specific operator, which further improves the traceability and reduces the possibility of wrong taking or taking by mistake. . It can be understood that, for the fingerprint lock, multiple fingerprint passwords can be set. That is to say, multiple people can be set to have the authority 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 The weighing result is 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 referred to as a first weighing time interval or a conventional weighing time interval, for example, 1 hour or 10 minutes. It can be understood that the weighing unit can also work and detect the weight in real time all the time. However, this way affects the service life of the weighing cell, or will increase the cost of the weighing cell. The disadvantage of real-time weighing is exacerbated especially since certain embodiments of the present invention will use multiple weighing cells to detect the weight of many different drugs.

Preferably, the medical drug cart further includes an alarm unit, which sends out 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 of the refrigerated area is abnormal, or the password is cracked by force, or the battery power is lower than the set value, and the communication is abnormal, and so on. 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 background server while performing the sound and light alarm, and send the alarm signal to the background server, or to the handheld terminal of the relevant medical staff. It will be dealt with in a timely manner by background monitoring personnel and/or relevant medical staff.

Monitoring of violent vandalism of medical drug carts may be carried out in any appropriate manner. For example, a collision sensor can be set to give an alarm when the detected collision intensity (local acceleration value or force value) exceeds a set threshold.

In another optional embodiment, an alarm will also be issued if the encrypted storage unit is continuously inputted with incorrect passwords for many times.

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

The abnormal change in the weight of the medicine, for example, means that the change in the weight of the medicine in the storage unit exceeds a set threshold when the opening detection device does not detect that the storage unit is opened. Such weight changes are detected, for example, by timer-triggered timed weighing, or by continuous real-time weighing. It is advantageous to keep the corresponding weighing unit for frequent weighing (for example, every 10 seconds, 30 seconds, or every minute) after an abnormal change in the weight of the medicine is detected by the timer-triggered timed weighing, and report to the scale. reload the result to the recording unit). The real-time weighing is also called frequent weighing, and the weighing time interval (the 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-triggered interval, the frequent weighing is released.

Preferably, the medical and drug cart includes a refrigeration device 31 disposed at the lower part of the vehicle body 1 . The refrigeration device 31 supplies cold energy to the refrigerated storage unit 3 . Advantageously, the refrigeration device 31 is linked with a temperature sensor to maintain the temperature in an appropriate interval. It will be appreciated that two or more different temperature zones may be provided. The temperature sensor can be linked with an alarm device to give an alarm when the temperature is too low or too high.

Preferably, the refrigerating storage unit 3 includes one or more refrigerating drawer cavities, each refrigerating drawer cavity is provided with a refrigerating drawer 32 ; and the grid plate 332 of grid-like structure, the bottom plate 331 divides the space in the refrigerating drawer 3 into upper and lower subspaces, the subspace below the bottom plate 331 is used for placing ice packs, and the subspace above the bottom plate 331 is used for placing ice packs. 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 table 10 , and the refrigerated storage unit 3 and the encrypted storage unit 4 are arranged below the operation table 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. Thereby, it is possible to see the items stored in the storage area directly below the work station. This helps to improve the intuitiveness of observation.

Preferably, the medical drug cart includes a wireless communication unit 51, which is communicatively connected to the recording unit 5, and sends the weighing result or medicine taking information recorded by the recording unit 5 to the background server.

Preferably, the medical drug cart is provided with a universal wheel at the bottom of the vehicle body. Therefore, it is convenient to push the medical medicine cart.

A driving device such as a motor can also be provided on the medical drug cart to drive the drug cart to move. Preferably, the medical drug cart is an automatic guided transport cart. It can operate autonomously or under the control of a control server. It can be understood that, in this case, the medical drug cart can adopt any suitable automatic driving device. Furthermore, 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 simultaneously function as an input device. For example, for gesture unlocking, etc. The display may 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 type of syringe in each division (for example, by menu selection or input from a soft keyboard). Other peripherals such as a hard keyboard and mouse can be configured if necessary.

It can be understood that the medical drug cart may include a central control unit to serve as the control center or brain of the entire medical drug cart. For example, the central control unit may adopt industrial control processor chips such as Z80 and 8086, programmable logic circuit (PLC) or programmable logic gate array (FPGA). When necessary, the central control unit can set the necessary peripheral circuits such as I/O, memory, external timer, etc. Additionally, the medical drug cart may also include a power supply system (eg, a rechargeable battery). The central control unit may also be a computer system, using higher-end processor chips and memory chips to further improve data processing and interactive performance.

The medical drug cart of the present invention is provided with a weighing unit and a recording unit, so that the weight change of the drugs stored in the medical drug cart can be recorded, so as to automatically record the use of the drugs in the medical drug cart and provide 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 requirements for low temperature storage and encryption management.

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

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

2. The described usage records can be synchronized to the anesthesia information system to avoid manual addition. At the same time, the software system provides a manual modification function, and there is no feedback for one-way transmission.

3. After the patient is anesthetized, the total function can be provided to view the total amount of all the drugs used by the patient with one click, which is convenient for the settlement of expenses.

4. On the basis of the weight measurement of medicines such as ampoules and vials, through the calculation or data processing of the software system, the quantity of medicines in stock can be checked with one click.

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

6. Through the software system, a patient-based drug use report can be provided, which is convenient for review and viewing. Each time you take a medicine, you need to enter patient-related information. For example, before taking medicines, scan the barcode or RFID tag on the Medication List or similar documents with a barcode scanner corresponding to the medical medicine cart, 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. The name and quantity of the placed medicines can be recorded at any time through the software system, corresponding to the next infusion work.

Specifically, the above software system can be mounted in the central control unit to form the medical drug cart system of the present invention. The medical drug cart system of the present invention includes, for example, a vehicle body 1 , a plurality of storage areas, a recording unit 5 and a central control unit 8 provided on the vehicle body 1 . At least a part of the plurality of storage areas is provided with a weighing unit 6, the weighing unit 6 weighs the medicines placed in the corresponding storage areas, and sends the weighing result to the central control unit 8,

When receiving the weighing result of the weighing unit corresponding to a certain storage area, the central control unit 8 compares the weighing result of the weighing result with the latest stored weighing weight, and if the difference between the two is greater than the set threshold, the central control unit 8 controls the recording unit 5 to record the weighing result,

The weighing result recorded by the recording unit includes: weighing unit number or storage area number, weighing weight and time.

For statistical convenience, the same type of medication is placed in each storage area. Thus, in an alternative embodiment, the central control unit 8 counts the total dosage of a single patient in the following manner:

a. Calculate the changes in the weighing weight in each storage area within a certain period of time, thereby determining the corresponding quantities of various medicines taken by patients undergoing surgery during this period of time; or,

b. The medical drug cart system has an input unit, and the input unit acquires patient-related information before taking medicine each time, and the weighing result recorded by the recording unit further includes: the patient-related information, the The central control unit 8 retrieves the patient-related information of the single patient, and statistically calculates the total dosage of the single patient.

In another alternative embodiment of the present invention, the central control unit 8 counts the drug inventory stored in the entire medical drug cart in the following manner:

The central control unit 8 retrieves the records of the recording unit 5 with the weighing unit number or the storage area number, and calculates the drug inventory in each storage area. When the inventory of a certain drug is lower than the minimum value, an alarm signal is issued. .

Optionally, the medical drug cart system of the present invention also has one or more of the following features or advantages.

One or more storage areas correspond to an opening detection device 7. When the storage area is opened, the opening detection device 7 triggers the corresponding weighing unit 6 to perform weighing, and sends the weighing result to the recording unit 5 or The central control unit 8 records. In other words, one opening detection device corresponds to one storage unit. Because the storage unit is a storage space that is opened and closed independently.

Part of the storage area is an encrypted storage area, and the encrypted storage area is locked by a fingerprint lock 41. The fingerprint lock 41 is linked with the opening detection device 7 corresponding to the encrypted storage area. When the fingerprint lock 41 is unlocked, all The opening detection device 7 triggers the corresponding weighing unit 6 to perform weighing, and sends the weighing result to the recording unit 5 or the central control unit 8 for recording.

The weighing unit 6, the recording unit 5, and the central control unit 8 are all connected to the CAN bus, each weighing unit 6 has a bus interface and two control interfaces, and the bus interface of each weighing unit 6 is connected to the CAN bus. The CAN bus is connected, and the weighing units 6 are connected in series through the control interface, wherein the control interface B of the previous weighing unit is connected with the control interface A of the next weighing unit, and the first weighing unit is connected in series. The control interface A of the last weighing unit is grounded, and the control interface B of the last weighing unit is left floating.

The central control unit 8 assigns addresses to the plurality of weighing cells in the following manner,

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

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

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

Step S4: judge 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, notifying 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, wherein, n=the total number of weighing units minus 1;

Step S5: The weighing unit sets its control interface B to be low, and sends its own address value through the CAN bus, and then the weighing unit that has completed its own address allocation checks whether it has received the command for the end of address allocation, and if not, it is always detected. ; if so, enter normal mode.

The central control unit 8 triggers the weighing unit 6 to perform weighing at a set time interval, and the weighing unit 6 sends the weighing result to the central control unit 8, and the central control unit 8 Compare the weighing result of the weighing result with the latest stored weighing weight, if the difference between the two is greater than the set threshold, the central control unit 8 controls the recording unit 5 to record the weighing. The recording unit 5 of the quantity results.

The medical drug cart system includes a refrigerated storage unit 3, 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 The plate 33, the partition plate 33 includes a bottom plate 331 and a grid plate 332 of grid-like structure, the grid plate 332 divides a plurality of storage areas, and the bottom plate 331 divides the space inside the refrigerating drawer 3 into upper and lower sub-sections. The subspace below the bottom plate 331 is used for placing ice packs, the subspace above the bottom plate 331 is used for storing medicines, the grid plate 332 is arranged above the bottom plate 331, and the weighing unit 6 is also It is arranged above the bottom plate 331, wherein the tray of the weighing unit forms the bottom of the corresponding storage area, and the tray is provided with a groove corresponding to the shape of the stored medicine to accommodate and protect the corresponding medicine .

The medical drug cart system includes an operating table 10 , the operating table is translucent or transparent, and the refrigerated storage unit 3 and the encrypted storage unit 4 are arranged below the operating table 10 .

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

Claims (8)

1. A medical drug cart system, comprising: a vehicle body (1), and a plurality of storage areas, a recording unit (5) and a central control unit (8) provided on the vehicle body (1),

a weighing unit (6) is provided for at least a part of the plurality of storage areas, the weighing unit (6) weighing the weight of the medicine placed in the corresponding storage area and transmitting the weighing result to the central control unit (8),

when the central control unit (8) receives the weighing result of the weighing unit corresponding to a certain storage area, the weighing weight of the weighing result is compared with the latest stored weighing weight, if the difference between the two weighing weights is larger than a set threshold value, the central control unit (8) controls the recording unit (5) to record the weighing result,

the weighing results recorded by the recording unit include: the weighing cell number or storage area number, the weighing weight and the time,

the weighing units (6), the recording unit (5) and the central control unit (8) are all connected to a CAN bus, each weighing unit (6) is provided with a bus interface and two control interfaces, the bus interface of each weighing unit (6) is connected with the CAN bus, the weighing units (6) are sequentially connected in series through the control interfaces, wherein the control interface B of the previous weighing unit is connected with the control interface A of the next weighing unit, the control interface A of the first weighing unit is grounded, the control interface B of the last weighing unit is suspended,

wherein the central control unit (8) assigns addresses to the plurality of weighing cells in the following way,

step S1: setting the control interfaces B of all the weighing units high, detecting the voltage of the control interface A of each weighing unit, if the voltage of the control interface A is high, keeping the weighing units in the process of detecting the voltage of the control interface A, if the voltage of the control interface A is low, detecting whether CAN messages with the address value of x are received by the weighing units, if not, turning to the step S2, if so, turning to S3, wherein x is an integer more than or equal to zero;

step S2: the weighing unit sets the address value to x as 0, and goes to step S4;

step S3: the weighing unit sets the address value to x +1, and goes to step S4;

step S4: judging whether x is smaller than n, if not, finishing address distribution, sending an address distribution finishing command by the weighing unit through the CAN bus, informing other weighing units to enter a normal mode, and simultaneously entering the normal mode by the weighing unit; if the number of the weighing cells is less than n, the process goes to step S5, where n is the total number of the weighing cells minus 1;

step S5: the weighing unit sets the control interface B to be low, sends the address value of the weighing unit through the CAN bus, then the weighing unit which finishes the address allocation checks whether the command of finishing the address allocation is received, and if not, the weighing unit always detects the command; if yes, entering a normal mode.

2. A medical drug cart system according to claim 1, wherein the same kind of drug is placed in each storage area, and the central control unit (8) counts the total drug usage of individual patients in the following manner:

a. calculating the change of the weighing weight in each storage area in a certain time period, thereby determining the quantity of various medicines taken by the patient who performs the operation in the time period; or,

b. the medical drug car system is provided with an input unit, the input unit acquires relevant information of a patient before taking a drug every time, and the weighing result recorded by the recording unit further comprises: the patient-related information, the central control unit (8) retrieves the patient-related information of the individual patient, and statistically calculates the total dosage of the individual patient.

3. The medical drug cart system according to claim 1, wherein the same kind of drugs are placed in each storage area, the central control unit (8) counts the amount of drug inventory stored in the entire medical drug cart in such a manner,

the central control unit (8) searches the records of the recording unit (5) by the number of the weighing unit or the number of the storage area, counts and calculates the drug stock in each storage area, and sends out an alarm signal when the stock of a certain drug is lower than the lowest value.

4. The medical drug cart system according to claim 1, wherein one or more storage areas correspond to an opening detection device (7), and when a storage area 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) or the central control unit (8) to be recorded.

5. The medical drug cart system according to claim 4, wherein a part of the storage area is an encrypted storage area, the encrypted storage area is locked by a fingerprint lock (41), the fingerprint lock (41) is linked with an opening detection device (7) corresponding to the encrypted storage area, and when the fingerprint lock (41) is unlocked, the opening detection device (7) triggers a corresponding weighing unit (6) to weigh and sends a weighing result to the recording unit (5) or the central control unit (8) to record.

6. The medical drug cart system according to any of claims 1 to 5, wherein the central control unit (8) triggers the weighing unit (6) to perform weighing at set time intervals, the weighing unit (6) sends the weighing result to the central control unit (8), the central control unit (8) compares the weighed weight of the weighing result with the latest stored weighed weight, and if the difference between the two is larger than a set threshold, the central control unit (8) controls the recording unit (5) to record the weighing result and the recording unit (5).

7. The medical drug cart system of any of claims 1 to 5, comprising a refrigerated storage unit (3), the refrigerated storage unit (3) comprising one or more refrigerated drawer chambers, one refrigerated drawer (32) being provided in each refrigerated drawer chamber; be equipped with division board (33) in cold-stored drawer (32), division board (33) are including grid plate (332) of bottom plate (331) and latticed structure, a plurality of storage area are separated out in grid plate (332), two subspaces about the space separation in bottom plate (331) will cold-stored drawer (3), the subspace below bottom plate (331) is used for placing the ice bag, the subspace more than bottom plate (331) is used for depositing the medicine, grid plate (332) set up the top of bottom plate (331), weighing unit (6) also set up the top of bottom plate (331), wherein, weighing unit's tray forms corresponding storage area's bottom be provided with the recess corresponding with the medicine appearance that stores on the tray to hold and protect corresponding medicine.

8. The medical drug cart system of claim 5, comprising a refrigerated storage unit (3), the refrigerated storage unit (3) comprising one or more refrigerated drawer chambers, one refrigerated drawer (32) being provided in each refrigerated drawer chamber; a partition plate (33) is arranged in the refrigeration drawer (32), the partition plate (33) comprises a bottom plate (331) and a grid plate (332) with a grid structure, the grid plate (332) is divided into a plurality of storage areas, the bottom plate (331) divides the space in the refrigeration drawer (3) into an upper sub-space and a lower sub-space, the sub-space below the bottom plate (331) is used for placing ice bags, the sub-space above the bottom plate (331) is used for storing medicines, the grid plate (332) is arranged above the bottom plate (331), the weighing unit (6) is also arranged above the bottom plate (331), wherein a tray of the weighing unit forms the bottom of the corresponding storage area, a groove corresponding to the shape of the stored medicines is arranged on the tray to contain and protect the corresponding medicines, the medical medicine cart system comprises an operation table (10), and the operation table is semitransparent or transparent, the refrigeration storage unit (3) and the encryption storage unit (4) are arranged below the operation table (10).

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