A device for accurately measuring the tare weight of infusion bottles / bags

Abstract

The invention discloses a device for accurately measuring the tare weight of an infusion bottle / bag. Two sets of infrared sensing devices are used to monitor the infusion state and the number of infusion drops, and the tare weight of the infusion bottle / bag is obtained by fitting the number of infusion drops and the real-time weighing weight to a curve. The measuring method of the invention has strong anti-interference ability, high precision, low cost, and the monitored value is relatively accurate.

Description

Technical Field

[0001] The invention belongs to the field of medical auxiliary devices, and in particular relates to a device for accurately measuring the tare weight of an infusion bottle / bag. Background Art

[0002] Intravenous infusion therapy is a commonly used treatment method in clinical medical work, and many patients need to receive several sets of liquid medicine a day. The therapeutic drug needs to be injected into the infusion bottle / bag, which causes the weight of each infusion bottle / bag to be different. There is no way to accurately calculate the weight of the solution during the infusion monitoring process, and the monitoring data is inaccurate. The initial weight of the solution needs to be provided during the monitoring process. The existing technology can only provide the overall weight of the infusion bottle / bag. The overall weight includes the tare weight of the infusion bottle / bag and the net weight of the solution. Only by removing the tare weight of the infusion bottle / bag from the overall weight can the net weight of the solution be accurately obtained, and the monitoring results can be accurate.

[0003] However, the existing infusion monitoring equipment is not able to accurately measure the tare weight of the infusion bottle / bag. Summary of the invention

[0004] The purpose of the present invention is to provide a device for accurately measuring the tare weight of an infusion bottle / bag in view of the defects of the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: a device for accurately measuring the tare weight of an infusion bottle / bag, comprising: a hook-type weighing device, a control bracket and an induction analysis device;

[0006] The hook-type weighing device is fixed on the top of the infusion stand and is used to hang the infusion bottle / bag and weigh the weight of the entire infusion bottle / bag in real time;

[0007] The control bracket is provided with a fixing hole, which is sleeved on the vertical rod of the infusion stand for fixing, and the sensing and analyzing device is fixed on one side of the control bracket;

[0008] The sensing and analyzing device comprises an infusion device slot, a sensing device and a control and analyzing device; wherein an infusion device slot is provided on one side of the outer surface of the sensing and analyzing device for fixing the infusion device; sensing devices are provided on both sides of the infusion device slot; the sensing device is used to detect the infusion state of the infusion device funnel connected to the infusion bottle / bag;

[0009] The control and analysis device is arranged inside the sensing and analysis device. The weight value measured in real time by the hook-type weighing device and the infusion status detected by the sensing device are sent to the control and analysis device. The control and analysis device converts the infusion status into the infusion drip rate and calculates the tare weight of the infusion bottle / bag based on the weighed weight received in real time.

[0010] Further, the infusion set card slot is in a Chinese character 'zhong' shape, with the infusion set funnel card slot in the middle and the infusion tube card slots at both ends. The sensing device is arranged on both sides inside the infusion set funnel card slot.

[0011] Further, the sensing device includes two groups of infrared sensing devices and a signal interface. Each group of infrared sensing devices includes an infrared transmitting tube and an infrared receiving tube. The infrared transmitting tube and the infrared receiving tube are respectively arranged on both sides inside the infusion set funnel card slot. The infrared transmitting tube is used to emit infrared signals. When there is no liquid drop obstruction in the infusion funnel, the infrared signal is received by the infrared receiving tube. The signal interface is used to transmit the signal received by the infrared receiving tube to the control and analysis device.

[0012] Further, the control and analysis device receives the signals from the two infrared receiving tubes and can exclude them when one group of signals is abnormal.

[0013] Further, the two groups of infrared transmitting tubes are respectively arranged on both sides of the infusion set funnel card slot, and the emission directions are opposite.

[0014] Further, the control and analysis device fits a curve by the infusion drip rate and the real-time weighing weight:

[0015] y = ax + b

[0016] where x is the total number of infusion drops, y is the real-time weighing weight, a is the slope of the curve, and b is the tare weight of the infusion bottle / bag;

[0017] The obtained value of b is the tare weight of the infusion bottle / bag.

[0018] Further, the control bracket further includes a clamping plate, a first magnetic attraction group, and a limit baffle; a corresponding second magnetic attraction group is arranged inside the sensing and analysis device. The infusion set card slot and the clamping plate are clamped with each other and are fixed by the mutual attraction of the two groups of magnetic attractions; the limit baffle is inserted into the infusion rack card slot for fixation.

[0019] Further, a drip marking line is arranged in the infusion set card slot.

[0020] Further, the device further includes a display, and the display is arranged outside the sensing and analysis device and is connected to the control and analysis device through a circuit.

[0021] Further, the device further includes a battery pack, and the battery pack is arranged inside the sensing and analysis device to provide electrical energy for the whole device.

[0022] The device of the present invention uses a weighing device to calculate the weight change of the infusion bag (bottle) during the infusion process, so as to obtain the tare weight of the infusion bag (bottle) through an analysis device, judge the net weight of the solution, and provide a basis for infusion monitoring. At the same time, two groups of infrared sensing devices are used to monitor the infusion state and the number of infusion drops. It has strong anti-interference ability, high accuracy, low cost, and the monitored values ​​are relatively accurate. The device is arranged outside the infusion tube and does not need to contact the medicine, so it will not contaminate the medicine. The device changes the traditional infusion management mode and can calculate the tare weight of the infusion bottle / bag, so as to serve medical staff more accurately, reduce the workload of nurses, and ensure the safety of the infusion process to avoid unnecessary disputes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of an exploded view of a control bracket and an inductive analysis device of an apparatus for accurately measuring the tare weight of an infusion bottle / bag in an embodiment.

[0024] Figure 2 The invention is a schematic structural diagram of a control bracket and an induction analysis device of an embodiment of a device for accurately measuring the tare weight of an infusion bottle / bag.

[0025] Figure 3 The invention is a structural schematic diagram of a hook type weighing device for accurately measuring the tare weight of an infusion bottle / bag in an embodiment.

[0026] Figure 4 It is the curve fitted by the theoretical data of the embodiment.

[0027] Figure 5 is a curve fitted by the measured data of the embodiment. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0030] like Figures 1 to 3The device for accurately measuring the tare weight of an infusion bottle / bag includes: a hook-type weighing scale 1, a control bracket, and an induction analysis device 2.

[0031] Among them, the hook-type weighing scale 1 is fixed on the top crossbar of the infusion stand, and is used to hang the infusion bottle / bag and weigh the weight of the entire infusion bottle / bag in real time.

[0032] The induction analysis device includes an infusion set card slot 3, an induction device, and a control analysis device. The induction analysis device can be divided into two half-boxes (4a, 4b) front and back. On one side of the outer surface, there is an infusion set card slot. The infusion set card slot is in the shape of a Chinese character 'zhong', with an infusion set funnel card slot in the middle and infusion tube card slots at both ends. Induction devices are arranged on both sides inside the infusion set funnel card slot. There is a drip mark line set inside the infusion set card slot.

[0033] The induction device includes two groups of infrared induction devices (5a, 5b) and a signal interface. Each group of infrared induction devices includes an infrared emitting tube and an infrared receiving tube. Each group of infrared emitting tubes and infrared receiving tubes are respectively arranged on both sides inside the infusion set funnel card slot. The two groups of infrared emitting tubes are respectively arranged on both sides of the infusion set funnel card slot, with opposite emission directions. The infrared emitting tubes are used to emit infrared signals. When there is no liquid drop obstruction in the infusion funnel, the infrared signals are received by the infrared receiving tubes. The signal interface is used to transmit the signals received by the infrared receiving tubes to the control analysis device. The two groups of infrared emitting tubes are respectively arranged on both sides of the infusion set funnel card slot, with opposite emission directions. The control analysis device receives the signals of the two infrared receiving tubes and can exclude them when one group of signals is abnormal.

[0034] There are fixing holes 6 on the control bracket. The fixing holes are sleeved on the vertical rod of the infusion stand for fixation. The control bracket also includes a clamping plate 7, a first magnetic attraction group 8, and a limit baffle 9. There is a corresponding second magnetic attraction group 10 inside the induction analysis device. Each of the two magnetic attraction groups has six magnetic attractions. The infusion set card slot and the clamping plate are mutually clamped and fixed by the attraction of the two groups of magnetic attractions. Two magnetic attractions are respectively arranged on the upper part of the two groups of magnetic attractions, and four are arranged at the lower part. The clamping plate is provided with a cover plate 11 outside the four magnetic attractions at the lower part. The limit baffle is inserted into the infusion stand card slot for fixation.

[0035] The control analysis device is arranged inside the induction analysis device. The weight value weighed by the hook-type weighing scale in real time and the infusion state detected by the induction device are sent to the control analysis device. The control analysis device converts the infusion state into the infusion drip rate, and at the same time calculates the tare weight of the infusion bottle / bag according to the weighed weight received in real time.

[0036] The control analysis device fits a curve by the infusion drip rate and the real-time weighed weight:

[0037] y = ax + b

[0038] Where x is the number of infusion drops, y is the real-time weighing weight, a is the slope of the curve, and b is the tare weight of the infusion bottle / bag. The b value obtained is the tare weight of the infusion bottle / bag.

[0039] The device also includes a display 12 and a battery pack. The display is arranged outside the induction analysis device, and the battery pack is arranged inside the induction analysis device to provide power for the entire device. The control analysis device is respectively connected to the hook-type weighing device, the induction device, the display and the battery pack through the circuit.

[0040] The real data is shown in Table 1. The real data is the theoretical data. The theoretical value is obtained according to the formula. The curve fitted by the theoretical data is as follows Figure 4 .

[0041] Table 1

[0042] <![CDATA[ Number of drops ]]> 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 weight 265.4 255.4 245.4 235.4 225.4 215.4 205.4 195.4 185.4 175.4 165.4 155.4 145.4 <![CDATA[ Number of drops ]]> 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 weight 135.4 125.4 115.4 105.4 95.4 85.4 75.4 65.4 55.4 45.4 35.4 25.4 15.4

[0043] The measured data are shown in Table 2. The measured data are actual test data obtained by using a standard infusion tube and normal saline through the device. The curve fitted by the measured data is shown in Figure 5 .

[0044] Table 2

[0045] <![CDATA[ Number of drops ]]> 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 weight 265.4 254.6 244.6 233.1 224.6 214.6 204.6 192.8 182.5 173.0 163.0 153.0 143.0 <![CDATA[ Number of drops ]]> 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 weight 132.9 123.4 113.5 103.2 93.2 84.7 73.6 63.2 53.5 42.7 32.5 24.5 16.5

[0046] The slopes of the fitting curves obtained from the real data and the measured data are similar, so the device of the present application can accurately calculate the tare weight of the infusion bottle / bag.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for accurately measuring the tare weight of an infusion bottle / bag, characterized in that Comprising: A hook type weighing device, a control bracket, and an induction analysis device; Wherein the hook type weighing device is fixed at the top of the infusion stand, used for hanging the infusion bottle / bag and weighing the weight of the entire infusion bottle / bag in real time; There are fixing holes on the control bracket, and the fixing holes are sleeved on the vertical rod of the infusion stand for fixation, and the induction analysis device is fixed on one side of the control bracket; The induction analysis device includes an infusion set card slot, an induction device, and a control analysis device; on one side of the outer surface of the induction analysis device, there is an infusion set card slot for fixing the infusion set; on both sides inside the infusion set card slot, there are induction devices; the induction device is used to detect the infusion state of the infusion funnel connecting the infusion bottle / bag; The control analysis device is arranged inside the induction analysis device, and the weight value weighed by the hook type weighing device in real time and the infusion state detected by the induction device are sent to the control analysis device. The control analysis device converts the infusion state into the infusion drip rate, and at the same time, based on the weighing weight received in real time, calculates the tare weight of the infusion bottle / bag; The induction device includes two groups of infrared induction devices and signal interfaces. Each group of infrared induction devices includes an infrared transmitting tube and an infrared receiving tube. The infrared transmitting tube and the infrared receiving tube are respectively arranged on both sides inside the infusion funnel card slot. The infrared transmitting tube is used to emit infrared signals. In the absence of liquid droplet obstruction in the infusion funnel, the infrared signal is received by the infrared receiving tube, and the signal interface is used to transmit the signal received by the infrared receiving tube to the control analysis device; The control analysis device fits a curve by the infusion drip rate and the real-time weighing weight: Where x is the total number of infusion drops, y is the real-time weighing weight, a is the slope of the curve, and b is the tare weight of the infusion bottle / bag; The obtained b value is the tare weight of the infusion bottle / bag.

2. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: The infusion set card slot is in the shape of a Chinese character'middle', with the middle being the infusion funnel card slot and the two ends being the infusion tube card slots. The induction device is arranged on both sides inside the infusion funnel card slot.

3. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: The control analysis device receives the signals of the two infrared receiving tubes and can exclude them when one group of signals is abnormal.

4. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: The two groups of infrared transmitting tubes are respectively arranged on both sides of the infusion funnel card slot, and the emission directions are opposite.

5. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: The control bracket further includes a clamping plate, a first magnetic attraction group, and a limit baffle; a corresponding second magnetic attraction group is arranged inside the induction analysis device. The infusion set card slot and the clamping plate are mutually clamped and fixed by the attraction of the two groups of magnetic attractions; the limit baffle is inserted into the infusion stand card slot for fixation.

6. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: There is a drip mark line arranged inside the infusion set card slot.

7. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: The device further includes a display, and the display is arranged outside the induction analysis device and is connected to the control analysis device through a circuit.

8. The device for accurately measuring the tare weight of an infusion bottle / bag according to claim 1, characterized in that: The device further includes a battery pack, and the battery pack is arranged inside the induction analysis device to provide electrical energy for the entire device.

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