Infusion device for children

Abstract

The invention discloses an infusion device for children, which belongs to the technical field of medical equipment and comprises supporting legs with brake wheels and a bed frame body, the supporting legs are hinged to the bed frame body, and each supporting leg is provided with a folding bayonet and an unfolding locking mechanism; the bed frame body is composed of a first connecting plate provided with a first connecting hole, a second connecting plate provided with a second connecting hole, a third connecting plate provided with a third connecting hole and a plurality of rotating shafts. The bed frame body is detachably provided with a monitoring component for monitoring the residual amount of the liquid medicine; the bed frame body is folded, and meanwhile, the infusion rod of the monitoring component is connected with the bed frame body in an inserted mode, so that rapid deployment can be achieved; according to the infusion device, through the arrangement of the monitoring component, the infusion dosage of the infusion bag can be monitored, liquid medicine can be conveniently replaced in time, too much air in the infusion bag is prevented from entering the infusion tube, and through the combination of the monitoring drip cup and the infusion drip cup, the infusion quality can be improved, and meanwhile the treatment safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a pediatric infusion device. Background Art

[0002] In clinical treatment, intravenous infusion is a widely adopted treatment method. Especially during the flu season and the outbreak of infectious diseases, the sharp increase in the number of patients has led to a shortage of hospital bed resources. Currently, hospitals usually relieve the shortage of beds by adding temporary beds in the corridor and aisle areas. However, standard beds are relatively large in volume, and only a limited number of beds can be added. Moreover, they occupy too much aisle area, seriously affecting the passage of patients and medical staff, and at the same time increasing safety risks.

[0003] In the existing infusion technology, it often occurs that the infusion switch is not closed in time when the liquid medicine is used up during the infusion process, resulting in air entering the infusion pipeline, which not only increases the medical risk but also increases the attention burden of medical staff. Especially in pediatric patients, due to their physiological and psychological resistance to infusion needles, it is difficult for medical staff to always pay attention to the infusion situation of each child when the ward is full of patients, further increasing the potential risk.

[0004] Therefore, there is an urgent need to develop a pediatric infusion device specifically designed for pediatric patients, which can increase the deployment of beds in the area, ensure that no air enters the infusion pipeline during the infusion process, and can greatly reduce the workload of medical staff, improving the safety and efficiency of treatment. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above difficulties in the background art and provide a pediatric infusion device for pediatric patients that can increase the deployment of beds in the area while improving the safety of treatment.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a pediatric infusion device, including support legs with brake wheels and a bed frame body. The support legs are hinged to the bed frame body, and the support legs are provided with folding buckles and unfolding locking mechanisms. The bed frame body is composed of a first connecting plate with a first connecting hole, a second connecting plate with a second connecting hole, a third connecting plate with a third connecting hole, and a plurality of rotating shafts. The rotating shafts are in clearance fit through the first connecting hole and the second connecting hole, and the rotating shafts are in clearance fit through the second connecting hole and the third connecting hole, so that the first connecting plate, the second connecting plate, and the third connecting plate can rotate relative to each other. When in the folded state, the surfaces of the two connecting plates are in contact with each other, and when in the unfolded state, the two connecting plates are parallel and the end faces of the rotating shafts are in contact with each other. A monitoring component for monitoring the remaining amount of liquid medicine is detachably provided on the bed frame body.

[0007] Further, the monitoring member includes an infusion rod, an infusion set, and an integrated monitoring module. The integrated monitoring module includes a buoyancy sensing member, a magnetic control reset member, and a monitoring drip chamber provided on the infusion set. The monitoring drip chamber is provided on the pipeline between the infusion drip chamber of the infusion set and the infusion bag. The buoyancy sensing member is provided inside the monitoring drip chamber, and the magnetic control reset member is provided outside the monitoring drip chamber and is connected to the buoyancy sensing member through a sealing assembly. The buoyancy sensing member includes a mounting seat, a contact sensor, and a floating ball provided above the mounting seat. A support rod is provided on one side of the mounting seat away from the contact sensor. The floating ball is hingedly connected to the support rod through a connecting rod, and the floating ball is provided at the end of the connecting rod. The contact sensor is electrically connected to an audible and visual alarm and a wireless signal transmitter.

[0008] Further, the magnetic control reset member includes a traction rope, a weight, and a magnet block. One end of the traction rope is connected to the weight, and the other end of the traction rope passes through the sealing assembly and is connected to the connecting rod at the end where the floating ball is located. A clamping member for limiting the monitoring drip chamber is sleeved on the infusion rod. The clamping member is connected to a magnetic attraction seat through a connecting strip, and the magnetic attraction seat is provided below the clamping member. The magnet block is embedded in the magnetic attraction seat.

[0009] Further, the sealing assembly includes a guide hole and a guide tube. The guide tube is connected to the guide hole through a double-lip sealing ring. Through holes for the traction rope to pass through are provided at both ends of the guide tube. The guide tube is divided into a filling area and a compensation area by a partition plate inside the guide tube. The filling area is filled with sealing grease, and a stainless steel bellows is provided in the compensation area.

[0010] Further, the monitoring drip chamber is in a conical shape and is made of medical-grade polycarbonate material. The upper diameter of the monitoring drip chamber is 8 - 10 mm, the lower diameter is 12 - 14 mm, and scale lines are provided inside the monitoring drip chamber.

[0011] Further, the floating ball is a medical silicone floating ball, and the buoyancy threshold can be adjusted by sleeving a stainless steel weight ring on the floating ball.

[0012] Further, a limiting strip is provided horizontally on the connecting strip, and the limiting strip is arranged lower than the contact sensor. When the weight is separated from the magnetic attraction block, the traction rope is withdrawn from the limiting strip and placed above the limiting strip. When the weight is combined with the magnetic attraction block, the traction rope passes through the limiting strip.

[0013] Further, the combination of the weight and the magnet block exerts a pulling force of 3 - 5 N, and the moving speed of the traction rope is controlled at 10 - 15 cm / s.

[0014] Further, the acousto-optic alarm includes multi-level trigger alarms. That is, when the liquid level is lower than the 1 / 2 position of the monitoring drip chamber and higher than the contact sensor, a local acousto-optic first-level alarm is triggered; when the liquid level is lower than the 1 / 2 position of the monitoring drip chamber and the floating ball contacts the contact sensor, a local acousto-optic second-level alarm is triggered and information is fed back to the nurse station through a wireless signal transmitter; when the liquid level is lower than the contact point between the floating ball and the contact sensor, a local acousto-optic third-level alarm is triggered, information is fed back to the nurse station through a wireless signal transmitter, and at the same time, an electromagnetic intercepting valve is activated to close the infusion pipeline.

[0015] A pediatric infusion device provided by the present invention has the following beneficial effects: In the present invention, the lower end of the third connecting plate is connected with a foldable and retractable support rod for supporting the third connecting plate, which can increase the deployment of beds in the area; in the present invention, while the bed frame body is foldable, the infusion rod of the monitoring component is inserted and connected with the bed frame body, enabling rapid deployment; through the setting of the monitoring component in this application, the infusion dosage of the infusion bag can be monitored, facilitating timely replacement of the liquid medicine and avoiding excessive air in the infusion bag from entering the infusion tube. Combining the monitoring drip chamber with the infusion drip chamber can improve the infusion quality and treatment safety at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the pediatric infusion device of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the monitoring component of the pediatric infusion device of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the rotating shaft of the pediatric infusion device of the present invention.

[0019] Figure 4 It is a schematic structural diagram of the monitoring drip chamber of the pediatric infusion device of the present invention.

[0020] In the figure, 1, support leg; 2, bed frame body; 3, rotating shaft; 4, infusion rod; 5, buoyancy sensing member; 51, mounting seat; 52, contact sensor; 53, floating ball; 54, support rod; 55, connecting rod; 6, magnetic control reset member; 61, traction rope; 62, weight; 63, magnet block; 7, monitoring drip chamber; 8, clamping member; 9, connecting strip; 10, magnetic attraction seat; 11, guiding tube; 111, filling area; 112, compensation area; 12, double-lip sealing ring; 13, limiting strip. DETAILED DESCRIPTION OF THE INVENTION

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0022] Embodiment 1 As Figures 1-4 described, a pediatric infusion device provided by the present invention includes a support leg 1 with a brake wheel and a bed frame body 2. The support leg 1 is hinged to the bed frame body 2 to realize the folding and unfolding of the support leg 1. When folded, it is stored inside the bed frame body 2, and when unfolded, it supports the bed frame body 2. The support leg 1 is provided with a folding bayonet and an unfolding locking mechanism. The locking mechanism includes a spring pin and a locking hole. The spring pin is installed inside the support leg 1 and is internally provided with a compression spring. The locking hole is located on the side of the bed frame body 2 and corresponds to the position of the spring pin. This application uses 304 stainless steel with a diameter of 3 mm. The spring elasticity is designed to be 10 N to ensure that it can withstand a lateral shear force of more than 50 kg after being inserted into the locking hole. The aperture of the locking hole is 3.1 mm, so that it has a clearance fit with the spring pin to avoid jamming. That is, when the support leg 1 is unfolded, the spring pin automatically pops out under the action of the elastic force and is inserted into the locking hole of the bed frame body 2 to form a rigid connection, thereby preventing relative rotation between the support leg 1 and the bed frame body 2, preventing the support leg 1 from rebounding or loosening, and ensuring that the pediatric infusion device of this application remains stable during use and avoiding accidental folding caused by children's activities or external collisions. When folding, the spring pin is manually pressed to withdraw from the locking hole to achieve one-key unlocking. When the support leg 1 is folded to the storage state, the support leg 1 is fixed by the folding bayonet to prevent it from automatically unfolding, enabling rapid deployment of the beds in the corresponding area and convenient storage and retrieval.

[0023] As Figure 1As described above, the bed frame 2 is composed of a first connecting plate provided with a first connecting hole, a second connecting plate provided with a second connecting hole, a third connecting plate provided with a third connecting hole, and a plurality of rotating shafts 3. A foldable and retractable support rod 54 for supporting the third connecting plate is connected to the lower end of the third connecting plate. The unfolded lengths of the first connecting plate, the second connecting plate, and the third connecting plate of the present application are 1900 - 2200 mm, which is the length of a normal hospital ward bed. Moreover, the lengths of the first connecting plate, the second connecting plate, and the third connecting plate decrease in sequence. The lengths of the first connecting plate, the second connecting plate, and the third connecting plate of the present application are 1000 - 1200 mm, 600 - 800 mm, and 300 - 400 mm in sequence. The rotating shaft 3 is in clearance fit through the first connecting hole and the second connecting hole, and the rotating shaft 3 is in clearance fit through the second connecting hole and the third connecting hole, enabling the first connecting plate, the second connecting plate, and the third connecting plate to rotate relative to each other. When in the folded state, the surfaces of the two connecting plates are in contact with each other. When in the unfolded state, the two connecting plates are parallel and the end faces of the rotating shaft 3 are in contact; in this embodiment, the first connecting plate provided with the first connecting hole, the second connecting plate provided with the second connecting hole, and the third connecting plate provided with the third connecting hole are connected to each other through the rotating shaft 3. That is, the first connecting plate and the second connecting plate are configured to move along the rotating shaft 3 until the surface of the first connecting plate is in contact with the surface of the second connecting plate, and the second connecting plate and the third connecting plate are configured to move along the rotating shaft 3 until the surface of the third connecting plate is in contact with the surface of the second connecting plate to achieve the folding of the bed body; and the first connecting plate and the second connecting plate are configured to move along the rotating shaft 3 until the end faces where the rotating shaft 3 is located are in contact and the first connecting plate and the second connecting plate are parallel, and the second connecting plate and the third connecting plate are configured to move along the rotating shaft 3 until the end faces where the rotating shaft 3 is located are in contact and the third connecting plate and the second connecting plate are parallel to achieve the unfolding of the bed body.

[0024] The present application conducted a folding performance test on the above bed frame 2 and obtained that its actual unfolding time is 3.8 ± 0.5 s, the folding volume is 0.14 ㎡, the actual load-bearing capacity is 65 kg without plastic deformation, and after 10,000 operation cycle life tests, the hinge wear is < 0.1 mm; through clinical deployment tests, it is obtained that the deployment density of the pediatric infusion device of the present application has increased by 15% compared with the deployment density of traditional hospital beds.

[0025] A monitoring component for monitoring the remaining amount of the liquid medicine is detachably provided on the bed frame 2. The monitoring component includes an infusion rod 4, an infusion set, and an integrated monitoring module. The infusion rod 4 of the detection component of the present application is connected to the bed frame 2 in a plug-in connection. That is, a plug for supporting the infusion rod 4 is provided on the bed frame 2, and a regulating valve for locking the infusion rod 4 is provided on the plug. After the rapid deployment of the bed frame 2, the infusion rod 4 can be inserted into the plug, enabling the disassembly of the infusion rod 4.

[0026] As Figure 4As described above, the integrated monitoring module includes a buoyancy sensing member 5, a magnetic control reset member 6, and a monitoring drip chamber 7 provided on the infusion set. The monitoring drip chamber 7 is provided on the pipeline between the infusion drip chamber and the infusion bag of the infusion set. At least two intubation tubes with regulating control valves are provided at one end of the infusion drip chamber relative to the infusion bag for plugging and connecting with the infusion bag. The monitoring drip chamber 7 is in a conical shape and is made of medical-grade polycarbonate. The upper diameter of the monitoring drip chamber 7 is 8 - 10 mm, and the lower diameter is 12 - 14 mm. Scale lines are provided inside the monitoring drip chamber 7, which can improve the safety performance during use. With the response of the alarm system, the corresponding personnel can have sufficient time to handle the alarm response, and excessive air entry can be avoided, thereby improving the safety performance during use.

[0027] The buoyancy sensing member 5 is provided inside the monitoring drip chamber 7. The magnetic control reset member 6 is provided outside the monitoring drip chamber 7 and is connected to the buoyancy sensing member 5 through a sealing assembly. The buoyancy sensing member 5 includes a mounting seat 51, a contact sensor 52, and a floating ball 53 provided above the mounting seat 51. The mounting seat 51 is threadedly connected to the monitoring drip chamber 7 and is fixed to the center of the bottom of the monitoring drip chamber 7 with medical epoxy glue. The floating ball 53 is a medical silicone floating ball, and the buoyancy threshold can be adjusted by sleeving a stainless steel weight ring on the floating ball 53. In this application, the contact sensor 52 uses a wedge-shaped contact groove. Through experimental comparison, it can be obtained that it can enhance the sensitivity to liquid triggering and improve the monitoring effect. A support rod 54 is provided on one side of the mounting seat 51 away from the contact sensor 52. The floating ball 53 is hingedly connected to the support rod 54 through a connecting rod 55, and the floating ball 53 is provided at the end of the connecting rod 55. The contact sensor 52 is electrically connected to an audible and visual alarm and a wireless signal transmitter. In this application, the contact sensor 52 uses a micro switch with a trigger pressure of 0.5 N, which is installed below the connecting rod 55, and the vertical distance between it and the falling trajectory of the floating ball 53 is 2 mm, improving the accuracy of the contact between the floating ball 53 and the contact sensor 52, so as to improve the accuracy of the monitoring of the liquid in the drip chamber by the detection drip chamber and reduce false alarms or delayed alarms.

[0028] As Figures 1-2 As described above, the magnetic control reset member 6 includes a traction rope 61, a weight 62, and a magnet block 63. One end of the traction rope 61 is connected to the weight 62, and the other end of the traction rope 61 passes through the sealing assembly and is connected to the connecting rod 55 at the end where the floating ball 53 is located. A clamping member 8 for limiting the monitoring drip chamber 7 is sleeved on the infusion rod 4. The clamping member 8 is a clamping ring with an opening, that is, during use, the monitoring drip chamber 7 is placed inside the clamping ring, and the clamping ring plays a role in clamping and limiting the monitoring drip chamber 7. The clamping member 8 is connected to a magnetic attraction seat 10 through a connecting strip 9, and the magnetic attraction seat 10 is provided below the clamping member 8. The magnet block 63 is embedded in the magnetic attraction seat 10.

[0029] The sealing assembly includes a guide hole and a guide tube 11. The guide tube 11 is connected to the guide hole through a double-lip seal ring 12. In the present application, the guide hole is provided on the side wall near the top of the monitoring drip chamber 7, and a guide hole with a diameter of Φ2 ± 0.05 mm is opened. Through holes for the traction rope 61 to pass through are opened at both ends of the guide tube 11. The guide tube 11 is divided into a filling area 111 and a compensation area 112 by a partition plate inside. The filling area 111 is filled with sealing grease, and a stainless steel bellows is provided in the compensation area 112. In the present application, a negative pressure tolerance performance test is carried out on the above-mentioned monitoring drip chamber 7, and it is obtained that under a negative pressure of -20 kPa for 30 minutes, the leakage rate < 0.005 ml / min, meeting the requirement of the YY / T0698 standard ≤ 0.01 ml / min.

[0030] Embodiment 2 On the basis of the above embodiment, in order to improve the accuracy of infusion monitoring and avoid false alarms of the floating ball in the liquid-free state in this embodiment, a limiting strip 13 is horizontally provided on the connecting strip 9 in the present application, and the limiting strip 13 is arranged lower than the contact sensor 52. When the weight 62 is separated from the magnetic attraction block, the traction rope 61 is withdrawn from the limiting strip 13 and placed above the limiting strip 13. When the weight 62 is combined with the magnetic attraction block, the traction rope 61 is passed through the limiting strip 13. Through the setting of the limiting strip 13, the weight 62 can be limited after the weight 62 is combined with the magnetic attraction block, and it can be avoided that it is separated from the magnetic attraction block under external force and false alarms occur after the floating ball contacts the contact sensor 52. The applicant carried out a test on pipeline jitter interference to simulate the movement of children, and through simulation detection, it is obtained that the false alarm triggering rate < 0.1%.

[0031] Embodiment 3 On the basis of the above embodiment, in order to improve the comfort and convenience of operation in this embodiment, a pulling force of 3 - 5 N is applied when the weight 62 is combined with the magnet block 63, and the moving speed of the traction rope 61 is controlled at 10 - 15 cm / s. On the basis of the above embodiment, a reset operation is carried out at a speed of 20 cm / s, and it is monitored that the bellows compensation system controls the pressure fluctuation within ±0.3 kPa, and the pulling force attenuation of the traction rope 61 is < 8% after 100,000 cycles.

[0032] Embodiment 4 On the basis of the above embodiments, in order to improve the monitoring effect of the drip chamber 7 in this embodiment, the acoustic-optic alarm of the present application includes multi-level trigger alarms. A liquid level sensor is also provided on the drip chamber 7 monitored in the present application. That is, when the liquid level is lower than the 1 / 2 position of the drip chamber 7 and higher than the contact sensor 52, a local acoustic-optic primary alarm is triggered, and it alarms once every 6 - 8 seconds; when the liquid level is lower than the 1 / 2 position of the drip chamber 7 and the floating ball 53 contacts the contact sensor 52, the local acoustic-optic primary alarm stops, a local acoustic-optic secondary alarm is triggered, and information is fed back to the nurse station through the wireless signal transmitter, and it alarms once every 3 - 5 seconds; when the liquid level is lower than the contact point between the floating ball 53 and the contact sensor 52, the local acoustic-optic primary alarm and the local acoustic-optic secondary alarm stop locally, an acoustic-optic tertiary alarm is triggered, and while feeding back information to the nurse station through the wireless signal transmitter, the electromagnetic intercepting valve is activated to close the infusion pipeline, and it alarms once every 1 second. In the case of no subsequent drug administration in the present application, the suspension ball separates from the contact sensor 52, and the acoustic-optic tertiary alarm stops; the applicant verified the infusion monitoring accuracy of the pediatric infusion device designed in the present application. A micro-injection pump of model BS-800 was used to infuse normal saline at a rate of 50 ml / h, and the remaining liquid volume of the drug was recorded when the alarm was triggered. The test results are as follows: the measured primary alarm response time is 1.5 s (the response time requirement is ≤2 s), and the standard deviation of the remaining liquid volume of the drug is 0.2 ml; the measured secondary alarm response time is 28 s (the response time requirement is ≤30 s), and the measured interception time of the tertiary alarm is 0.5 s (the response time requirement is ≤0.5 s).

[0033] On the basis of the above embodiments, the applicant conducted alarm accuracy tests under different liquid viscosities. Test 1: Normal saline, viscosity 1.0 ± 0.1 mPa·s, density 1.005 g / cm³, surface tension 72 mN / m; Test 2: 10% fat emulsion, viscosity 20 ± 2 mPa·s, density 1.03 g / cm³, surface tension 45 mN / m; Test 3: Glycerol solution, viscosity 50 ± 5 mPa·s, density 1.26 g / cm³, surface tension 63 mN / m; An infusion pump with a flow accuracy of ±1%, the monitoring system is the infusion device of the present application, data collection, high-precision electronic balance, high-speed camera and multi-channel data recorder; Set the alarm value to 20 ml, and conduct the test at an infusion speed of 50 ml / h at an ambient temperature of 25 ± 1°C; In Test 1, the measured mean value is 19.8 ml, the standard deviation is 0.2 ml, the maximum error is 2.0%, the time for the liquid level to drop to the threshold value is 72 ± 3 s, the sensor response time is 1.2 ± 0.1 s, and the total delay is 1.3 ± 0.2 s; In Test 2, the measured mean value is 18.7 ml, the standard deviation is 0.5 ml, the maximum error is 13%, the time for the liquid level to drop to the threshold value is 89 ± 5 s, the sensor response time is 2.8 ± 0.3 s, and the total delay is 2.9 ± 0.4 s; In Test 3, the measured mean value is 17.2 ml, the standard deviation is 0.8 ml, the maximum error is 25%, the time for the liquid level to drop to the threshold value is 112 ± 5 s, the sensor response time is 3.6 ± 0.5 s, and the total delay is 3.8 ± 0.4 s.

[0034] On the basis of the above tests, the applicant optimized the sensor response logic and algorithm compensation for high-viscosity liquids, estimated the liquid viscosity through the initial flow rate and pressure data, dynamically repaired the alarm threshold value, and then predicted the liquid level change trend according to the historical flow data to trigger the alarm signal in advance. The following tests were conducted. Test 4: Plasma substitute (hydroxyethyl starch), viscosity 60 ± 5 mPa·s, density 1.10 g / cm³, surface tension 60 mN / m, the alarm value was corrected from 20 ml to 15 ml; Test 5: Nutritional mixture (20% fat emulsion + 3% amino acid + 5% glucose), viscosity 25 ± 3 mPa·s, density 1.06 g / cm³, surface tension 43 mN / m, the alarm value was corrected from 20 ml to 18 ml; The test results are as follows. In Test 4, the measured mean value is 14.2 ml, the standard deviation is 0.5 ml, the maximum error is 5%, the time for the liquid level to drop to the threshold value is 120 ± 5 s, the sensor response time is 3.5 ± 0.3 s, and the total delay is 1.7 ± 0.3 s; In Test 5, the measured mean value is 17.4 ml, the standard deviation is 0.3 ml, the maximum error is 3%, the time for the liquid level to drop to the threshold value is 92 ± 4 s, the sensor response time is 2.6 ± 0.3 s, and the total delay is 1.5 ± 0.4 s.

[0035] On the basis of the above tests, the applicant conducted intravenous injection tests on mice and rabbits, with 8 - 10 in each group (half male and half female). For intravenous injection test one, intravenous injection was carried out once every 1 - 2 days and repeated three times; for intravenous injection test one, intravenous injection was carried out once a day and repeated three times. It was observed that neither the mice nor the rabbits showed discomfort during the injection process. Finally, vital signs of the tested mice and rabbits were detected, and all vital sign indicators were normal without obvious fluctuations.

[0036] Control group one: The difference from Example 1 is that there is no monitoring drip chamber 7, but a monitoring module is set at the liquid outlet end of the infusion bag of the infusion set. Through experimental comparison, it is obtained that if the number of intravenous injections for a child is more than two bottles, its usage cost is significantly higher than that of the infusion device provided in this application. The liquid residue amount of the infusion device set in Control group one increased by 2% compared with the liquid residue amount of the pediatric infusion device set in this application. Therefore, the pediatric infusion device designed in this application is significantly superior to the infusion device provided by Control group one in terms of usage cost and dosage.

[0037] Control group two: The difference from Example 1 is that an electronic sensor closed - loop control is used to replace the magnetic control reset part 6, that is, a liquid level sensor is combined with a micro - motor drive. While the magnetic control reset part 6 in this application undertakes the dynamic balance function. When the liquid level rises, the gravity of the weight 62 cancels the buoyancy, and the floating ball 53 resets. Compared with Example 1, Control group two relies on power supply drive, which is prone to increasing the risk of circuit failures during use. Therefore, the pediatric infusion device designed in this application is significantly superior to the infusion device provided by Control group two in terms of ease of use.

[0038] Control group three: The difference from Example 1 is that a counterweight slide rail adjustment is used to replace the magnetic control reset part 6, that is, a sliding counterweight block balances the buoyancy. Compared with Example 1, the sensitivity of adjustment in Control group three is low and it is easily interfered by vibration. Through experimental comparison, it is obtained that the false triggering rate of the alarm of the infusion device in Control group three > 0.5%. Therefore, the pediatric infusion device designed in this application is significantly superior to the infusion device provided by Control group three in terms of monitoring accuracy.

[0039] The pediatric infusion device of the present application is equipped with suspension balls of different specifications corresponding to different drug liquid viscosities. Before use, it is adapted according to the viscosity of the drug liquid to be used. Secondly, the cannula is plugged and connected to the liquid outlet end of the infusion bag, the weight 62 and the magnet block 63 are separated, and then the intravenous injection operation is performed according to the medication order, and then the liquid level sensor, contact sensor 52, sound and light alarm and wireless signal transmitter are started to monitor the drug liquid in the monitoring drip pot 7. When the liquid level is lower than the monitoring drip pot 71 / 2 position and higher than the contact sensor 52, the local sound and light level 1 alarm is triggered, and the alarm is triggered every 6-8 seconds; when the liquid level is lower than the monitoring drip pot 71 / 2 position and the floating ball 53 contacts the contact sensor 52, the local sound and light level 1 alarm stops, the local sound and light level 2 alarm is triggered and the information is fed back to the nurse station through the wireless signal transmitter, and the alarm is triggered every 3-5 seconds; when the liquid level is lower than the contact point between the floating ball 53 and the contact sensor 52 When the alarm is triggered, the local sound and light level 1 alarm and the local sound and light level 2 alarm stop locally, the sound and light level 3 alarm is triggered and the information is fed back to the nurse station through the wireless signal transmitter, and the electromagnetic shut-off valve is started to close the infusion pipeline. The alarm is triggered every 1s. In the case of no subsequent medication, the suspension ball is separated from the contact sensor 52, and the sound and light level 3 alarm stops; the cooperative personnel observe the amount of medicine in the infusion bag according to the reminder, and then close the bag of medicine that has been infused, open the new medicine, and as the medicine is injected, monitor the rise of the medicine in the drip pot 7, the corresponding alarm is lifted, and the corresponding regulating control valve is opened to continue medication. When there is no medicine to be given later, the traction rope 61 is pulled to combine the weight 62 with the magnet block 63 to lift the alarm; thereby effectively solving the problem that the existing infusion device is prone to the situation that the infusion switch is not closed in time during the infusion process due to the frequent occurrence of the medicine liquid running out, resulting in air entering the infusion pipeline and reducing the medical safety performance.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pediatric infusion device, comprising a support leg (1) with a brake wheel and a bed frame body (2), characterized in that: The support leg (1) is hingedly connected to the bed frame body (2), and the support leg (1) is provided with a folding bayonet and an unfolding locking mechanism; the bed frame body (2) is composed of a first connecting plate provided with a first connecting hole, a second connecting plate provided with a second connecting hole, a third connecting plate provided with a third connecting hole, and a plurality of rotating shafts (3). The rotating shafts (3) are in clearance fit through the first connecting hole and the second connecting hole, and the rotating shafts (3) are in clearance fit through the second connecting hole and the third connecting hole, so that the first connecting plate, the second connecting plate and the third connecting plate can rotate relatively. In the folded state, the surfaces of the two connecting plates are in contact with each other, and in the unfolded state, the two connecting plates are parallel and the end faces of the rotating shafts (3) are in abutment; a monitoring component for monitoring the remaining amount of the liquid medicine is detachably provided on the bed frame body (2).

2. The pediatric infusion device according to claim 1, wherein: The monitoring component includes an infusion rod (4), an infusion set, and an integrated monitoring module. The integrated monitoring module includes a buoyancy sensing member (5), a magnetic control reset member (6), and a monitoring drip chamber (7) provided on the infusion set. The monitoring drip chamber (7) is provided on the pipeline between the infusion drip chamber of the infusion set and the infusion bag. The buoyancy sensing member (5) is provided in the monitoring drip chamber (7), and the magnetic control reset member (6) is provided outside the monitoring drip chamber (7) and is connected to the buoyancy sensing member (5) through a sealing assembly. The buoyancy sensing member (5) includes a mounting seat (51), a contact sensor (52), and a floating ball (53) provided above the mounting seat (51). A support rod (54) is provided on one side of the mounting seat (51) away from the contact sensor (52). The floating ball (53) is hingedly connected to the support rod (54) through a connecting rod (55), and the floating ball (53) is provided at the end of the connecting rod (55). The contact sensor (52) is electrically connected to an audible and visual alarm and a wireless signal transmitter.

3. The pediatric infusion device according to claim 2, wherein: The magnetic control reset member (6) includes a traction rope (61), a weight (62), and a magnet block (63). One end of the traction rope (61) is connected to the weight (62), and the other end of the traction rope (61) passes through the sealing assembly and is connected to the connecting rod (55) at the end where the floating ball (53) is located. A clamping member (8) for limiting the monitoring drip chamber (7) is sleeved on the infusion rod (4). The clamping member (8) is connected to a magnetic suction seat (10) through a connecting strip (9), and the magnetic suction seat (10) is provided below the clamping member (8). The magnet block (63) is embedded in the magnetic suction seat (10).

4. The pediatric infusion device according to claim 2, wherein: The sealing assembly includes a guiding hole and a guiding tube (11). The guiding tube (11) is connected to the guiding hole through a double-lip sealing ring (12). Through holes for the traction rope (61) to pass through are provided at both ends of the guiding tube (11). The guiding tube (11) is divided into a filling area (111) and a compensation area (112) by a partition plate inside the guiding tube (11). The filling area (111) is filled with sealing grease, and a stainless steel bellows is provided in the compensation area (112).

5. The pediatric infusion device according to claim 2, characterized in that: The monitoring drip chamber (7) is in a conical shape and is made of medical-grade polycarbonate. The upper diameter of the monitoring drip chamber (7) is 8-10 mm, and the lower diameter is 12-14 mm, and scale lines are provided in the monitoring drip chamber (7).

6. The pediatric infusion device according to claim 1, wherein: The floating ball (53) is made of medical silicone floating ball, and the buoyancy threshold can be adjusted by sleeving a stainless steel counterweight ring on the floating ball (53).

7. The pediatric infusion device according to claim 2, wherein: A limiting strip (13) is transversely arranged on the connecting strip (9), and the limiting strip (13) is arranged lower than the contact sensor (52). When the weight (62) is separated from the magnetic attraction block, the traction rope (61) is withdrawn from the limiting strip (13) and placed above the limiting strip (13). When the weight (62) is combined with the magnetic attraction block, the traction rope (61) is passed through the limiting strip (13).

8. The pediatric infusion device according to claim 3, wherein: The weight (62) and the magnet block (63) are combined to apply a pulling force of 3 - 5 N, and the moving speed of the traction rope (61) is controlled at 10 - 15 cm / s.

9. The pediatric infusion device according to claim 2, wherein: The sound and light alarm includes multi - level trigger alarms. That is, when the liquid level is lower than the 1 / 2 position of the monitoring drip chamber (7) and higher than the contact sensor (52), a local sound and light first - level alarm is triggered; when the liquid level is lower than the 1 / 2 position of the monitoring drip chamber (7) and the floating ball (53) contacts the contact sensor (52), a local sound and light second - level alarm is triggered and information is fed back to the nurse station through a wireless signal transmitter; when the liquid level is lower than the contact point between the floating ball (53) and the contact sensor (52), a local sound and light third - level alarm is triggered, information is fed back to the nurse station through a wireless signal transmitter, and at the same time, an electromagnetic shut - off valve is activated to close the infusion pipeline.

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