Weighing device, using method thereof and blood treatment equipment

Abstract

The invention provides a weighing device and a using method thereof, and blood treatment equipment, the weighing device comprises a weighing unit, the weighing unit comprises a first weighing sensor, a second weighing sensor, and a circuit board connected with the first weighing sensor and the second weighing sensor; the fixing assembly bears the first weighing sensor and the second weighing sensor and is used for being connected with an equipment main body of the medical equipment; the liquid hanging assembly comprises a connecting block connected with the fixing assembly, a liquid hanging sliding block connected to the connecting block in a sliding mode and a liquid hanging rod used for hanging a liquid bag, a fixing part is arranged on the liquid hanging sliding block, and the liquid hanging rod is detachably and directly placed on the fixing part. According to the weighing device, the liquid bag can be conveniently hung, the shaking condition of the liquid bag in the initial hanging stage can be reduced, the shaking condition of the liquid bag after the liquid bag is hung on the weighing device can be reduced, the measurement accuracy of the weighing device is improved, and the weighing data accuracy is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a weighing device, a blood treatment device including the weighing device, and a method for using the weighing device. Background Art

[0002] Some medical equipment needs to control the input amount of liquid medicine, such as hemodialysis equipment, blood purification equipment, etc., so a weighing device is needed to weigh the liquid medicine. During CRRT treatment, the accuracy of the liquid weighing data is directly related to the treatment effect. However, the liquid bag is usually hung at a lower position on the main body of the equipment, which is inconvenient to hang the liquid bag, and when hanging the liquid bag, multiple clips or hooks are required to fix multiple parts of the liquid bag one by one, which is more cumbersome. Therefore, when the liquid bag containing liquid is hung on the weighing device, due to factors such as low or narrow space and many hanging operations, the liquid bag will initially shake greatly when it is just hung on the weighing device, resulting in inaccurate data measured by the weighing device at the beginning. Summary of the invention

[0003] In view of this, the present application is committed to providing a weighing device that is convenient for hanging liquid bags and helps reduce the shaking of liquid bags in the initial stage of hanging, so as to help reduce the shaking of the liquid bags after they are hung on the weighing device, improve the measurement accuracy of the weighing device, and improve the accuracy of the weighing data.

[0004] On one hand, the present application provides a weighing device, which is applicable to medical equipment, including a weighing unit, wherein the weighing unit includes:

[0005] A first weighing sensor, a second weighing sensor, and a circuit board connected to the first weighing sensor and the second weighing sensor respectively;

[0006] A fixing assembly, carrying the first weighing sensor and the second weighing sensor, and used to be connected to the device body of the medical device;

[0007] The liquid hanging component includes a connecting block connected to the fixed component, a liquid hanging sliding block slidably connected to the connecting block, and a liquid hanging rod for hanging the liquid bag. The liquid hanging sliding block is provided with a fixed part, and the liquid hanging rod is detachably placed directly on the fixed part.

[0008] In a possible implementation, a plurality of first hooks arranged along the sliding direction are provided on the outer surface of one side in the width direction of the liquid hanging sliding block, the first hooks form the fixing portion, and the liquid hanging rod is directly placed on the first hooks; wherein the width direction is perpendicular to the sliding direction;

[0009] And / or, the liquid hanging sliding block is provided with a pull-out handle at one end in the sliding direction.

[0010] In a possible implementation, the liquid hanging rod has a plurality of second hooks arranged along the sliding direction of the liquid hanging sliding block to hang the liquid bag; the liquid hanging rod is also provided with a lifting ring, which is rotatably mounted on the liquid hanging rod.

[0011] In a possible implementation, the first weighing sensor and the second weighing sensor are distributed up and down along the height direction of the equipment body, and the liquid hanging component is connected below the fixing component.

[0012] In a possible implementation, the fixing assembly includes a first fixing block, a second fixing block and a third fixing block;

[0013] The first end of the first load cell is connected to the first fixed block, the first end of the second load cell is connected to the second end of the first load cell through the second fixed block, and the liquid hanging component is connected to the second end of the second load cell through the third fixed block;

[0014] The first fixing block, the first weighing sensor, the second fixing block, the second weighing sensor, the third fixing block and the liquid hanging component are arranged in sequence from top to bottom.

[0015] In a possible implementation, the fixing assembly further includes a wrapping shell, the wrapping shell circumferentially wraps the stacked first fixing block, the first load cell, the second fixing block, and the second load cell, and the circuit board is connected to the wrapping shell;

[0016] And / or, it also includes a connecting rod, which passes through the first fixing block, the third fixing block and the connecting block in sequence along the height direction.

[0017] In a possible embodiment, a sensor for sensing the return of the liquid hanging sliding block and a triggering member for triggering the sensor are also provided. The sensor is provided on the fixed component, and the triggering member is detachably connected to the end of the liquid hanging sliding block away from the pulling handle through a supporting block.

[0018] In a possible implementation manner, the connection block is provided with a sliding guide groove arranged in a horizontal direction, and the liquid hanging sliding block is slidably connected to the connection block via a guide rail penetrating the sliding guide groove;

[0019] A first limiting structure for limiting the end point of the outward movement of the liquid hanging sliding block and / or a second limiting structure for limiting the end point of the return movement of the liquid hanging sliding block are also provided between the sliding guide groove and the guide rail.

[0020] In a possible implementation manner, the guide rail includes a first rail rod and a second rail rod, the first limiting structure is arranged between the first rail rod and the sliding guide groove, and the second limiting structure is arranged between the second rail rod and the sliding guide groove;

[0021] And / or, the first limiting structure comprises a first limiting groove provided on one of the sliding guide groove wall and the guide rail rod, and a first elastic ball provided on the other;

[0022] And / or, the second limiting structure includes a second limiting groove arranged on one of the sliding guide groove wall and the guide rail rod, and a second elastic ball arranged on the other.

[0023] In a possible implementation, the liquid hanging sliding block is provided with an open groove, a guide rail is provided in the open groove, and the connecting block includes a transverse portion and a vertical portion, the vertical portion extends into the open groove and is provided with a sliding guide groove for the guide rail to pass through;

[0024] And / or, the main block body of the liquid hanging sliding block and the first hook are integrally formed components.

[0025] The present application also provides a blood treatment device, comprising a device body and any one of the weighing devices described above.

[0026] The present application also provides a method for using a weighing device, which is applicable to the above-mentioned weighing device and includes the following contents:

[0027] Step 1, setting one of the first weighing sensor and the second weighing sensor as a main sensor, and setting the other as an auxiliary sensor;

[0028] Step 4, measuring the weight of the liquid bag on the liquid hanging assembly by the main sensor and obtaining a first set of data, and measuring the weight of the liquid bag on the liquid hanging assembly by the auxiliary sensor and obtaining a second set of data;

[0029] Compare the first set of data and the second set of data at the same measurement time to determine whether the difference is within the set range. If so, record the data at that moment and use it as weighing data. If not, activate an alarm.

[0030] In a possible implementation, the following contents are also included:

[0031] Step 2, start the weighing device, calibrate and zero the first weighing sensor and the second weighing sensor in a no-load state, and during the calibration process, detect whether the no-load values ​​of the first weighing sensor and the second weighing sensor are both zero, if not, start an alarm, if yes, proceed to the next step;

[0032] Step 3: When a homing signal generated by the sensor is received, proceed to step 4.

[0033] The weighing device provided by the present application is not only provided with a liquid hanging sliding block, but also provided with a liquid hanging rod that can be placed on the liquid hanging sliding block. When hanging the liquid bag on the weighing device, the liquid hanging rod is first removed from the liquid hanging sliding block, and then the liquid bag is hung on the liquid hanging rod, that is, the liquid hanging rod directly hangs and fixes the liquid bag, and after the liquid bag is stable on the liquid hanging rod, the liquid hanging rod can be stably placed on the liquid hanging sliding block. In this way, not only is it convenient to hang the liquid bag on the weighing device, but the hanging of the liquid bag can be completed smoothly, and the shaking of the liquid bag when it is just hung on the weighing device is effectively reduced, so that the liquid bag is hung very stably at the weighing position, eliminating the interference of the shaking on the weighing sensor, and improving the accuracy of the weighing measurement; and further, the weighing device of the present application performs weighing measurement through two sensors, and the data of the two sensors can be verified with each other. When the measurement data of the two sensors have an abnormal difference, the detection can be stopped in time to check the abnormality. It can also be only when there is no abnormality in the data difference of the two sensors that data measurement and recording can be officially started, and the drug delivery and treatment can be officially started, thereby ensuring the accuracy of the weighing data and improving the safety of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Shown is an overall schematic diagram of a weighing device in an embodiment of the present application;

[0035] Figure 2 Shown is a schematic diagram of the composition of a weighing unit in an embodiment of the present application;

[0036] Figure 3 The figure shows a first angle schematic diagram of the vertical distribution of two sensors and a liquid hanging component in an embodiment of the present application;

[0037] Figure 4 The second angle schematic diagram of the vertical distribution of two sensors and the liquid hanging component in the embodiment of the present application is shown;

[0038] Figure 5 The figure is a schematic structural diagram of the main block of the liquid hanging sliding block in the embodiment of the present application;

[0039] Figure 6 Shown is an exploded view of a weighing unit in an embodiment of the present application;

[0040] Figure 7 Shown is a schematic diagram of the arrangement of sensors and triggers in an embodiment of the present application;

[0041] Figure 8 It is a schematic diagram showing the return of the liquid hanging sliding block to the weighing position in the embodiment of the present application;

[0042] Fig. 9The figure shows a schematic diagram of the liquid hanging sliding block at the end point of the outward movement in the embodiment of the present application;

[0043] Fig.10 Shown is a schematic diagram of a weighing device disposed on the equipment body in an embodiment of the present application.

[0044] Figure 1-Figure 10 middle:

[0045] 10. Fixing assembly; 11. First fixing block; 12. Second fixing block; 13. Third fixing block; 14. Wrapping shell; 15. Connecting rod;

[0046] 20. Liquid hanging assembly; 21. Connecting block; 211. Horizontal part; 212. Vertical part;

[0047] 22, liquid hanging sliding block; 221, first hook; 222, pull handle; 223, main block; 224, guide rail; 225, bearing block; 226, first elastic ball; 227, second elastic ball; 201, first limiting groove; 202, second limiting groove;

[0048] 23. Liquid hanging rod; 231. Second hook; 232. Lifting ring;

[0049] 30. Equipment body; 31. Suspension plate;

[0050] 41. a first weighing sensor; 42. a second weighing sensor; 43. a circuit board;

[0051] 51. Sensor; 52. Trigger. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] Please refer to the attached Figure 1-Figure 10The embodiment of the present application provides a weighing device, which is suitable for weighing and measuring liquid medicine or waste liquid on medical equipment, such as blood treatment equipment. The weighing device includes a weighing unit or a plurality of weighing units arranged side by side, the weighing unit includes a circuit assembly, a fixing assembly 10 and a suspension assembly, the circuit assembly includes a first weighing sensor 41, a second weighing sensor 42, and a circuit board 43 connected to the first weighing sensor 41 and the second weighing sensor 42 respectively, the circuit board 43 can be a control board or a signal transmission board. The fixing assembly 10 carries the first weighing sensor 41 and the second weighing sensor 42, and is used to be connected to the device body 30 of the medical device. The liquid hanging assembly 20 includes a connecting block 21 connected to the fixing assembly 10, a liquid hanging sliding block 22 slidably connected to the connecting block 21, and a liquid hanging rod 23 for hanging a liquid bag, the liquid hanging sliding block 22 is provided with a fixing portion for fixing the liquid hanging rod 23, and the liquid hanging rod 23 is detachably placed directly on the fixing portion.

[0054] The liquid hanging rod 23 directly hangs and fixes the liquid bag, and at the same time, the liquid hanging rod 23 is convenient to be placed on the liquid hanging sliding block 22 and also convenient to be removed from the liquid hanging sliding block 22. Then, when the liquid bag is hung on the weighing device, the liquid hanging sliding block 22 is first pulled out to one side of the equipment body 30, so that the operator can remove the liquid hanging rod 23 from the liquid hanging sliding block 22, and then the liquid bag is hung on the liquid hanging rod 23. After the liquid bag is stable on the liquid hanging rod 23, the liquid hanging rod 23 is directly placed on the liquid hanging sliding block 22, for example, the liquid hanging rod 23 is horizontally lifted or held, and the liquid hanging rod 23 is gently and steadily placed on the fixed part of the liquid hanging sliding block 22. The fixed liquid hanging sliding block 22 can be gently pushed back to its original position after the liquid hanging rod 23 is hung, or it can be returned to its original position first and then the liquid hanging rod 23 is placed.

[0055] Obviously, by doing so, not only is the operation of hanging the liquid bag easy and no longer restricted by low or narrow space, thus improving the convenience of hanging the liquid bag, but after the liquid bag is hung on the weighing device, even in the initial stage after hanging, there will be no large shaking, but it will be directly and stably hung on the weighing position of the weighing device, effectively reducing the impact of the shaking in the initial stage after hanging on the weighing accuracy.

[0056] At the same time, the weighing device of the present application performs weighing measurement through two sensors, and the two sensors are respectively connected to the circuit board 43, that is, the two sensors measure independently to obtain two sets of measurement data, and the two sets of measurement data can be checked against each other (the data of the two sensors are checked against each other after filtering, or are checked against each other without filtering). When the difference between the two sets of measurement data is abnormal, that is, exceeds the set difference range, an alarm can be issued in time, and the machine can be stopped for detection in time, especially for the situation that the liquid bag will shake when it is just hung on the weighing device. At this time, there will be a difference between the two sets of measurement data. You can wait until there is no difference between the two sets of measurement data or the difference is very small, that is, the difference is within the normal range (indicating that the liquid is no longer shaking and is in a stable state at this time), and then officially start weighing data recording, and then officially start treatment operations such as liquid medicine delivery, so as to avoid the liquid medicine input being affected by inaccurate data in the early stage, and improve measurement accuracy.

[0057] It can be seen that the weighing device provided in the present application, through the combined arrangement of the liquid hanging sliding block 22 and the liquid hanging rod 23, not only simplifies the operation of hanging the liquid bag on the weighing device and provides convenience, but also can smoothly complete the hanging of the liquid bag, effectively reducing the shaking of the liquid bag when it is just hung on the weighing device, so that the liquid bag is hung very stably at the weighing position, eliminating the interference of the shaking on the weighing sensor, and improving the accuracy of the weighing measurement; and further, by performing calibration measurement with two sensors, abnormal situations can be eliminated, and only when the data difference between the two sensors is normal and indicates that the liquid bag is in a stable state without shaking, can data measurement and recording be officially started, and liquid medicine delivery and treatment can be officially started, thereby ensuring the accuracy of the weighing data and improving the safety of treatment.

[0058] Specifically, if Figure 4 and Figure 6 As shown, the connecting block 21 is provided with a sliding guide groove arranged in the horizontal direction, and the liquid hanging sliding block 22 is horizontally slidably connected to the connecting block 21 through a guide rail 224 penetrating the sliding guide groove. For example, a through groove is provided on the connecting block 21, and a linear bearing is arranged in the through groove, so as to form the sliding guide groove, and the guide rail 224 is a linear polished rod penetrating the linear bearing. Such a setting ensures that the liquid hanging sliding block 22 moves horizontally on the device body 30 to avoid causing the liquid bag to shake.

[0059] The liquid hanging sliding block 22 is provided with a pulling handle 222 at one end in the sliding direction. By pulling the pulling handle 222, the liquid hanging sliding block 22 can be pulled or pushed to move smoothly and gently, which not only facilitates the operation of hanging the liquid hanging rod 23 with the liquid bag and removing the liquid hanging rod 23, but also helps to reduce the shaking of the liquid bag hanging thereon.

[0060] A plurality of first hooks 221 arranged along the sliding direction are provided on the outer surface of one side of the liquid hanging sliding block 22 in the width direction, and the first hooks 221 form a fixing portion, and the liquid hanging rod 23 is directly placed on the first hooks 221; wherein the width direction is perpendicular to the sliding direction. In this way, the first hooks 221 are located on the outer surface of one side of the liquid hanging sliding block 22, and when the liquid hanging rod 23 is removed or hung, the operation space is large and the field of vision is unobstructed; fixing the liquid hanging rod 23 by the first hooks 221 is not only stable, but also convenient to operate.

[0061] The liquid hanging rod 23 has a plurality of second hooks 231 arranged along the sliding direction of the liquid hanging sliding block 22 to hang the liquid bag. The first hook 221 and the second hook 231 are arranged in the same direction; thus, the liquid bag, the liquid hanging rod 23 and the liquid hanging sliding block 22 are hung in the same direction, the gravity acts in the same direction, the gravity center lines are parallel and close, and the liquid bag can be hung on the weighing device stably and balancedly.

[0062] The second hook 231 on the liquid hanging rod 23 is located below the rod body to better vertically hang the liquid bag; and the first hook 221 and the second hook 231 are also oriented in the same direction, providing convenience for the hanging and removing operation.

[0063] The liquid hanging rod 23 is also provided with a lifting ring 232, which is rotatably mounted on the liquid hanging rod 23. For example, the lifting ring 232 includes three rods connected in sequence and is in a U-shape or a similar U-shape as a whole. Both ends of the lifting ring 232 have sleeves, and the lifting ring 232 is rotatably mounted on the rod body of the liquid hanging rod 23 through the sleeves. In this way, the liquid hanging rod 23 can be conveniently removed or hung through the lifting ring 232, which is not only convenient to operate, but also, since the lifting ring 232 can rotate relative to the liquid hanging rod 23, when lifting, it can ensure that the liquid bag is suspended vertically, keep the liquid bag stable and balanced, and reduce the shaking of the liquid bag.

[0064] The first weighing sensor 41 and the second weighing sensor 42 are distributed up and down along the height direction of the equipment body 30, and the liquid hanging component 20 is connected below the fixed component 10. In this way, the two sensors are arranged vertically, and the liquid hanging component 20 is also arranged vertically with the two sensors in sequence, so that the gravity center line of the liquid hanging component 20 and the force center line of the two sensors are parallel and close to each other, and in the horizontal first direction, that is, the sliding direction of the liquid hanging sliding block 22, the weighing sensor, the liquid hanging sliding block 22, the liquid hanging rod 23 and the length direction of the liquid bag have a small spacing, and in the horizontal second direction, that is, the width direction of the liquid hanging sliding block 22 and the liquid bag, there is also a very small spacing, for example, the distance between the center lines in both directions of the horizontal plane is less than 30 mm, which improves the weighing accuracy and the accuracy of the weighing data.

[0065] like Figure 3 and Figure 4As shown, in a specific example, the fixing assembly 10 includes a first fixing block 11, a second fixing block 12 and a third fixing block 13; the first fixing block 11 is used to connect to the hanging plate 31 on the equipment body 30. The first end of the first weighing sensor 41 is connected to the first fixing block 11, the first end of the second weighing sensor 42 is connected to the second end of the first weighing sensor 41 through the second fixing block 12, and the liquid hanging assembly 20 is connected to the second end of the second weighing sensor 42 through the third fixing block 13; the first fixing block 11, the first weighing sensor 41, the second fixing block 12, the second weighing sensor 42, the third fixing block 13 and the liquid hanging assembly 20 are arranged from top to bottom in sequence. In this way, the overall structure is regular and stable, the gravity center line of the liquid hanging assembly 20 and the center lines of the two sensors are parallel, the components are vertically distributed, the force transmission and measurement are stable and accurate, which is conducive to improving the weighing measurement accuracy.

[0066] like Figure 2 and Figure 6 As shown, in some embodiments, the fixing assembly 10 further includes a wrapping shell 14, which wraps the stacked first fixing block 11, the first weighing sensor 41, the second fixing block 12, and the second weighing sensor 42 in the circumferential direction, and is connected to one of the fixing blocks, such as the first fixing block 11; the circuit board 43 of the weighing device is connected to the wrapping shell 14. In this way, the overall structural stability can be enhanced, the protection of the two sensors can be enhanced, and the fixing of the circuit board 43 and the connection between the circuit board 43 and the two sensors can be easily achieved. The wrapping shell 14 can be an annular sleeve, or it can be composed of three shell plates connected in sequence in the circumferential direction and be U-shaped as a whole.

[0067] The fixing assembly 10 may further include a connecting rod 15, which sequentially passes through the first fixing block 11, the third fixing block 13 and the connecting block 21 along the height direction. The connecting block 21 and the third fixing block 13 are both located below the end of the first fixing block 11 connected to the first weighing sensor 41. By sequentially passing through the three by the connecting rod 15 arranged along the height direction, it is possible to prevent the sensor from being damaged when being suddenly pulled down with great force, thereby affecting subsequent use.

[0068] An open groove is provided on the main block 223 of the liquid hanging sliding block 22, and a guide rail 224 slidably connected to the connecting block 21 is provided in the open groove. For example, the liquid hanging sliding block 22 includes a bottom plate, a side plate located on one side of the bottom plate in the width direction, and an end plate located at one end or both ends of the bottom plate in the length direction. The bottom plate, the side plate and the two end plates, or the bottom plate, the side plate, the pull-out handle 222 and the end plate enclose the open groove. The guide rail 224 is arranged along the length direction of the bottom plate, and the two ends are respectively connected to the two end plates, or one end plate and a pull-out handle 222. The connecting block 21 includes a horizontal portion 211 and a vertical portion 212, and the whole is L-shaped or similar to L-shaped; the vertical portion 212 extends into the open groove and is provided with a sliding guide groove for the guide rail 224 to pass through. The guide rail 224 and the sliding guide groove can be provided with two sets of parallel arrangements.

[0069] like Figure 6 As shown, the connecting block 21 is an integral structure and is an integrally formed component. Figure 5 As shown, the main block 223 and the first hook 221 of the liquid hanging sliding block 22 are in an integrated structure and are an integrally formed component. In this way, the connecting block 21 and the liquid hanging sliding block 22 have high strength and a stable center of gravity, which is conducive to improving the structural regularity and stability, and is conducive to improving the weighing measurement accuracy.

[0070] In some embodiments, Figure 7 As shown, a sensor 51 for sensing the return of the liquid hanging slide block 22 and a triggering member for triggering the sensor 51 are also provided. The sensor 51 is provided on the fixed assembly 10, and the triggering member is detachably connected to the end of the liquid hanging slide block 22 away from the pull-out handle 222, such as the end plate at the end, through the bearing block 225. When the liquid hanging slide block 22 carries the liquid bag and returns to its position, the sensor 51 can detect whether the liquid hanging slide block 22 has accurately returned to the weighing position (hereinafter referred to as return). After sensing that the liquid hanging slide block 22 has accurately returned to its position, the sensor 51 sends a signal to the controller, and the controller formally adopts the data measured by the weighing sensor to start weighing measurement. In this way, it is ensured that the liquid hanging slide block 22 is accurately returned to the weighing device before weighing measurement is performed, so as to avoid affecting the measurement accuracy due to changes in the center line gap, and to avoid the problem of affecting the measurement accuracy due to the inaccurate return position of the liquid hanging slide block 22.

[0071] Specifically, the trigger 52 may be a light source capable of emitting light, and the sensor 51 may be a light sensor; or, one of the sensor 51 and the trigger 52 may be a photoelectric sensor and the other a trigger blade; or, the sensor 51 may be a proximity switch.

[0072] Furthermore, a first limiting structure for limiting the end point of the outward movement of the liquid hanging sliding block 22 and / or a second limiting structure for limiting the end point of the return of the liquid hanging sliding block 22 are also provided between the sliding guide groove and the guide rail 224. In this way, the end points of the outward movement and return of the liquid hanging sliding block 22 are limited by the mechanical structure, which prevents excessive pulling and can also prevent inaccurate return from affecting the weighing measurement.

[0073] Preferably, the guide rail 224 includes a first rail rod and a second rail rod, a first limiting structure is provided between the first rail rod and the sliding guide groove, and a second limiting structure is provided between the second rail rod and the sliding guide groove. In this way, the double guide rail 224 is provided to improve the moving stability and guiding accuracy of the liquid hanging sliding block 22, and to bidirectionally limit the outward end point and the return end point on the moving path of the liquid hanging sliding block 22.

[0074] Specifically, the first limiting structure includes a first limiting groove 201 disposed on one of the sliding groove wall and the rail 224, and a first elastic ball 226 disposed on the other. In this way, the structure is simple, can play a limiting role, and will not generate a large friction resistance to the movement of the liquid hanging sliding block 22.

[0075] Similarly, the second limiting structure may also be of the same structural arrangement, namely, comprising a second limiting groove 202 arranged on one of the sliding guide groove wall and the guide rail 224 rail rod, and a second elastic ball 227 arranged on the other.

[0076] When the liquid hanging sliding block 22 is pulled outward, when the first elastic ball 226 is inserted into the first limiting groove 201, it indicates that the liquid hanging sliding block 22 has moved to the end point of the outward movement, and the pulling can be stopped at this time to perform the liquid bag hanging operation; when the liquid hanging sliding block 22 is pushed inward to return to its position, when the second elastic ball 227 is inserted into the second limiting groove 202, it indicates that the liquid hanging sliding block 22 has moved to the end point of the return position and is accurately in the set weighing position, and the pushing can be stopped at this time; the sensor 51 senses that the liquid hanging sliding block 22 has returned to its position and sends a signal to the controller, and the first weighing sensor 41 and the second weighing sensor 42 measure the weight. The controller receives the two sets of data and starts to compare them. When the difference between the two sets of data is within the set normal range, the controller records the data at this moment and uses it as the weighing data, and starts the pump on the device body 30 to start transporting the liquid medicine in the liquid bag to start the treatment.

[0077] The embodiment of the present application also provides a blood treatment device, including a device body 30 and a weighing device as described in any of the above embodiments. On the blood treatment device, the weighing device is used to weigh and measure the liquid medicine and the waste liquid after treatment, which is convenient for hanging and removing the liquid bag, can effectively reduce the shaking of the liquid bag after hanging on the weighing device, improve the weighing measurement accuracy, and further improve the accuracy of the weighing data through dual sensor weighing measurement.

[0078] The embodiment of the present application further provides a method for using a weighing device, which is applicable to the weighing device described in any of the above embodiments, and includes the following contents:

[0079] S1, setting one of the first weighing sensor 41 and the second weighing sensor 42 as a main sensor and the other as an auxiliary sensor;

[0080] S4, measuring the weight of the liquid bag on the liquid hanging assembly 20 by the main sensor, and obtaining a first set of data;

[0081] The weight of the liquid bag on the liquid hanging component 20 is measured by the auxiliary sensor, and a second set of data is obtained;

[0082] Compare the first set of data and the second set of data at the same measurement time to determine whether the difference is within the set range. If so, record the data at that moment and use it as weighing data. If not, activate the alarm.

[0083] With such an arrangement, when the liquid bag is weighed, the measurement data of the two weighing sensors are compared and verified. When the difference between the two sets of measurement data is abnormal, an alarm can be issued in time and the machine can be stopped for inspection in time, especially when the liquid bag shakes just after being hung on the weighing device. If the shaking amplitude is large, the difference between the two sets of measurement data is large at this time. It is possible to wait until there is no difference between the two sets of measurement data or the difference is very small, that is, the difference is within the normal range, and then officially start recording the weighing data, and then officially start treatment operations such as liquid medicine delivery, so as to avoid the liquid medicine input being affected by inaccurate data in the early stage, thereby improving measurement accuracy.

[0084] Furthermore, the method for using the weighing device also includes the following contents:

[0085] S2, start the weighing device, calibrate and zero the first weighing sensor 41 and the second weighing sensor 42 in a no-load state, and during the calibration process, detect whether the no-load values ​​of the first weighing sensor 41 and the second weighing sensor 42 are both zero, if not, start an alarm, if yes, proceed to step S3;

[0086] S3, using the sensor 51 to detect whether the liquid hanging sliding block 22 carrying the liquid bag has returned to the weighing position of the weighing device, and when the return signal generated by the sensor 51 is received, the step S4 is performed.

[0087] That is, the weighing device can be used in the following ways:

[0088] S1, setting one of the first weighing sensor 41 and the second weighing sensor 42 as a main sensor and the other as an auxiliary sensor;

[0089] S2, start the weighing device, calibrate and zero the first weighing sensor 41 and the second weighing sensor 42 in a no-load state, and during the calibration process, detect whether the no-load values ​​of the first weighing sensor 41 and the second weighing sensor 42 are zero, if not, start an alarm, if yes, proceed to the next step;

[0090] S3, detecting whether the liquid hanging sliding block 22 carrying the liquid bag has returned to the weighing position of the weighing device through the sensor 51; when receiving the return signal generated by the sensor 51, proceed to the next step;

[0091] S4, measuring the weight of the liquid bag on the liquid hanging component 20 by the main sensor and obtaining a first set of data, and measuring the weight of the liquid bag on the liquid hanging component 20 by the auxiliary sensor and obtaining a second set of data;

[0092] Compare the first set of data and the second set of data at the same measurement time to determine whether the difference is within the set range. If so, record the data at that moment and use it as weighing data. If not, activate an alarm.

[0093] In this way, when the sensor is calibrated and zeroed, the liquid bag is started to be hung on the weighing device. After the liquid bag is hung, the liquid hanging sliding block 22 returns to its position. The sensor 51 senses that the liquid hanging sliding block 22 has returned to its position and sends a signal to the controller. The first weighing sensor 41 and the second weighing sensor 42 measure the weight. The controller receives the two sets of data and starts to compare them. When the difference between the two sets of data is within the set normal range, the controller records the data at that moment as the weighing data, and starts the pump on the device body 30 to start transporting the liquid medicine in the liquid bag to start treatment.

[0094] Through the above method, the adverse effects of liquid bag shaking and the like on weighing data can be eliminated, and accurate data can be used to control the weight of the liquid medicine, thereby improving treatment safety.

[0095] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0096] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0097] It should also be noted that in the device and apparatus of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as an equivalent solution of the present application.

[0098] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0099] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

[0100] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A weighing device, characterized in that: Suitable for medical equipment, including a weighing unit, the weighing unit comprising: A first weighing sensor (41), a second weighing sensor (42), and a circuit board (43) respectively connected to the first weighing sensor (41) and the second weighing sensor (42); A fixing assembly (10), carrying the first weighing sensor (41) and the second weighing sensor (42), and used to be connected to a device body (30) of the medical device; The liquid hanging component (20) comprises a connecting block (21) connected to the fixing component (10), a liquid hanging sliding block (22) slidably connected to the connecting block (21), and a liquid hanging rod (23) for hanging a liquid bag, wherein the liquid hanging sliding block (22) is provided with a fixing portion, and the liquid hanging rod (23) is detachably placed directly on the fixing portion.

2. The weighing device according to claim 1, characterized in that: A plurality of first hooks (221) arranged along the sliding direction are provided on the outer surface of one side in the width direction of the liquid hanging sliding block (22), the first hooks (221) forming the fixing portion, and the liquid hanging rod (23) is directly placed on the first hooks (221); wherein the width direction is perpendicular to the sliding direction; And / or, the liquid hanging sliding block (22) is provided with a pull-out handle (222) at one end in the sliding direction.

3. The weighing device according to claim 1, characterized in that: The liquid hanging rod (23) is provided with a plurality of second hooks (231) arranged along the sliding direction of the liquid hanging sliding block (22) for hanging the liquid bag; The liquid hanging rod (23) is also provided with a lifting ring (232), and the lifting ring (232) is rotatably sleeved on the liquid hanging rod (23).

4. The weighing device according to claim 1, characterized in that: The first weighing sensor (41) and the second weighing sensor (42) are distributed up and down along the height direction of the equipment body (30), and the liquid hanging component (20) is connected below the fixing component (10).

5. The weighing device according to claim 1 or 4, characterized in that: The fixing assembly (10) comprises a first fixing block (11), a second fixing block (12) and a third fixing block (13); The first end of the first weighing sensor (41) is connected to the first fixing block (11), the first end of the second weighing sensor (42) is connected to the second end of the first weighing sensor (41) through the second fixing block (12), and the liquid hanging component (20) is connected to the second end of the second weighing sensor (42) through the third fixing block (13); The first fixed block (11), the first weighing sensor (41), the second fixed block (12), the second weighing sensor (42), the third fixed block (13) and the liquid hanging component (20) are arranged in sequence from top to bottom.

6. The weighing device according to claim 5, characterized in that: The fixing assembly (10) further comprises a wrapping shell (14), wherein the wrapping shell (14) wraps the stacked first fixing block (11), the first weighing sensor (41), the second fixing block (12) and the second weighing sensor (42) in a circumferential direction, and the circuit board (43) is connected to the wrapping shell (14); And / or, it further comprises a connecting rod (15), wherein the connecting rod (15) sequentially passes through the first fixing block (11), the third fixing block (13) and the connecting block (21) along the height direction.

7. The weighing device according to claim 1, characterized in that: A sensor (51) for sensing the return of the liquid hanging sliding block (22) and a triggering member for triggering the sensor (51) are also provided; the sensor (51) is provided on the fixing assembly (10); and the triggering member is detachably connected to an end of the liquid hanging sliding block (22) away from the pulling handle (222) via a bearing block (225).

8. The weighing device according to claim 1 or 7, characterized in that: The connecting block (21) is provided with a sliding guide groove arranged in a horizontal direction, and the liquid hanging sliding block (22) is slidably connected to the connecting block (21) via a guide rail (224) penetrating the sliding guide groove; A first limiting structure for limiting the end point of the outward movement of the liquid hanging sliding block (22), and / or a second limiting structure for limiting the end point of the return movement of the liquid hanging sliding block (22) are also provided between the sliding guide groove and the guide rail (224).

9. The weighing device according to claim 8, characterized in that: The guide rail (224) comprises a first rail rod and a second rail rod, the first limiting structure is arranged between the first rail rod and the sliding guide groove, and the second limiting structure is arranged between the second rail rod and the sliding guide groove; And / or, the first limiting structure comprises a first limiting groove (201) arranged on one of the groove wall of the sliding guide groove and the rail rod of the guide rail (224), and a first elastic ball (226) arranged on the other; And / or, the second limiting structure comprises a second limiting groove (202) arranged on one of the groove wall of the sliding guide groove and the rail rod of the guide rail (224), and a second elastic ball (227) arranged on the other.

10. The weighing device according to claim 2, characterized in that: The liquid hanging sliding block (22) is provided with an open groove, a guide rail (224) is provided in the open groove, the connecting block (21) comprises a transverse portion (211) and a vertical portion (212), the vertical portion (212) extends into the open groove and is provided with a sliding guide groove for the guide rail (224) to pass through; And / or, the main block body (223) of the liquid hanging sliding block (22) and the first hook (221) are integrally formed components.

11. A blood treatment device, characterized in that: It comprises an equipment body (30) and a weighing device as claimed in any one of claims 1 to 10.

12. A method for using a weighing device, characterized in that: The weighing device applicable to any one of claims 1 to 10 comprises the following contents: Step 1, setting one of the first weighing sensor (41) and the second weighing sensor (42) as a main sensor, and the other as an auxiliary sensor; Step 4, measuring the weight of the liquid bag on the liquid hanging component (20) by the main sensor and obtaining a first set of data, and measuring the weight of the liquid bag on the liquid hanging component (20) by the auxiliary sensor and obtaining a second set of data; Compare the first set of data and the second set of data at the same measurement time to determine whether the difference is within the set range. If so, record the data at that moment and use it as weighing data. If not, activate an alarm.

13. The method for using the weighing device according to claim 12, characterized in that: Includes the following: Step 2, starting the weighing device, calibrating and zeroing the first weighing sensor (41) and the second weighing sensor (42) in a no-load state, during the calibration process, detecting whether the no-load values ​​of the first weighing sensor (41) and the second weighing sensor (42) are both zero, if not, starting an alarm, if yes, proceeding to the next step; Step 3, using the sensor (51) to detect whether the liquid hanging sliding block (22) carrying the liquid bag has returned to the weighing position, and when a return signal generated by the sensor (51) is received, step 4 is performed.

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