An infusion device based on intelligent sensor

Abstract

The present application relates to the field of medical infusion equipment, and more particularly to an infusion device based on intelligent sensors. The infusion device based on intelligent sensors of the present application is provided with a piston cylinder for adjusting flow rate in the three-way channel of the infusion tube. The optical liquid level sensor is used to automatically monitor the change of liquid level of the medicine in the three-way channel, and the intelligent control of the miniature electric push rod drives the piston cylinder to adjust the delivery flow rate of the medicine. When the delivery of the medicine is about to be completed, the piston cylinder is inserted into the plug to automatically close. The one-way micro-pore in the piston cylinder can also be used to timely discharge the air bubbles. The technical problems of uneven flow rate and blood backflow caused by untimely closing in the conventional medical infusion device mainly relying on manual visual inspection and experience for liquid level judgment and flow rate control are solved.

Description

Technical Field

[0001] This invention relates to the field of medical infusion equipment, and more particularly to an infusion set based on a smart sensor. Background Technology

[0002] Currently, in hospital clinical intravenous infusion work, traditional medical infusion sets mainly rely on manual visual inspection and experience for judging fluid level and controlling flow rate. Manual monitoring is easily affected by factors such as eyesight, workload, and ambient light, leading to misjudgment of the remaining fluid volume. This can result in situations where the infusion runs out of fluid midway without being detected in time. Manually adjusting the drip rate is difficult to maintain a constant flow rate, especially as the volume of the medication bottle changes, causing significant fluctuations in the drip rate. This can easily lead to phlebitis due to an excessively fast infusion rate, or the medication being too slow, affecting its efficacy. When the medication is finished, if medical staff fail to turn off the infusion set or remove the needle in time, it can easily cause blood backflow. After the medication is finished, the negative pressure formed in the infusion tubing can cause the patient's blood to flow back into the infusion tubing and even into the medication bottle, resulting in backflow. In severe cases, this can even lead to medical accidents, endangering the patient's life and ultimately affecting the patient's treatment outcome. Summary of the Invention

[0003] In order to overcome the shortcomings of traditional medical infusion sets, which mainly rely on manual visual inspection and experience for liquid level judgment and flow rate control, making it difficult to ensure uniform flow rate and easily causing blood backflow if not shut off in time, this invention provides an infusion set based on intelligent sensors.

[0004] The technical solution of this invention: An infusion set based on a smart sensor, comprising an infusion tube, a plug, a mounting sleeve, a fixing bracket, a piston cylinder, a miniature electric push rod, a charging connector, an inner seal, and a photoelectric liquid level sensor; the infusion tube is sequentially provided with an inlet channel structure, a three-way channel structure, and an outlet channel structure, with the lower end of the inlet channel connected to the middle port of the three-way channel, and the outlet channel connected to the lower port of the three-way channel; the inner diameter of the outlet channel is smaller than the inner diameter of the three-way channel; the mounting sleeve is connected to the upper port of the three-way channel of the infusion tube; a fixing bracket for fixing the mounting sleeve is connected to the infusion tube; the three-way channel of the infusion tube contains... A piston cylinder is inserted; the piston cylinder has a through-groove structure on the side facing the liquid inlet channel, and the through-groove is a tapered structure that tapers upwards; a miniature electric actuator for adjusting the vertical height of the piston cylinder is installed inside the mounting housing; the miniature electric actuator has a built-in battery module for power supply, and the battery module is connected to a charging connector; an inner plug is detachably fixed to the top of the piston cylinder; a photoelectric liquid level sensor for measuring the liquid level inside the three-way channel is installed inside the piston cylinder, and the battery module built into the miniature electric actuator powers the photoelectric liquid level sensor; a plug aligned with the piston cylinder is fixed to the lower port of the three-way channel of the infusion tube.

[0005] Furthermore, the miniature electric actuator is equipped with an adjustment knob for manually adjusting the lifting height.

[0006] Furthermore, the inner seal has several upward-through unidirectional micro-pore structures; the mounting sleeve has internal and external through-hole structures.

[0007] Furthermore, a micro motor heater is installed inside the mounting housing, and the battery module built into the micro electric actuator powers the micro motor heater; the heating element of the micro motor heater is fixedly connected to a heating ring, and the heating ring is in close contact with the piston cylinder.

[0008] Furthermore, several heat-conducting rods are fixed to the heating ring, and these rods are inserted into the piston cylinder.

[0009] Furthermore, the device features a three-way channel upper interface structure for the detachable and fixed connection of the infusion tubing; the infusion tubing, plug, and inner sealing plug are all made of medical disposable materials; the mounting sleeve and piston cylinder are both made of medical-grade stainless steel; and the surface of the medical-grade stainless steel used in the piston cylinder is covered with a layer of silicone oil sealing.

[0010] Furthermore, an annular groove structure for aligning the fixing bracket is formed on the outer surface of the infusion tube; an elastic rubber ring is fixedly connected inside the fixing bracket and locked onto the annular groove.

[0011] Furthermore, an annular filter screen is inserted inside the piston cylinder.

[0012] Furthermore, the annular filter uses a TPE thermoplastic material with elastic deformation properties.

[0013] Furthermore, a support ring is fixed to the lower end of the annular filter screen, and the support ring is sleeved on the plug.

[0014] The beneficial effects of this invention are as follows: It mainly consists of an infusion tube and an installation sleeve. The three-way channel of the infusion tube is equipped with a piston cylinder for adjusting the flow rate. The liquid level change of the medicine in the three-way channel is automatically monitored by a photoelectric liquid level sensor. The intelligent control of the micro electric push rod drives the piston cylinder to adjust the delivery flow rate of the medicine. When the medicine delivery is about to be completed, the piston cylinder is inserted into the plug and automatically closed. It can also use the one-way micro air hole in the inner plug of the piston cylinder to expel air bubbles in time. A micro motor heater is provided to heat the medicine flowing through the piston cylinder, which not only avoids the condensation of the medicine in the low temperature environment, but also enhances the air bubble removal effect. This invention is an infusion set based on an intelligent sensor, which solves the technical problems of traditional medical infusion sets that mainly rely on manual visual judgment and experience for liquid level judgment and flow rate control, which makes it difficult to ensure uniform flow rate and easily causes blood backflow if not closed in time. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the infusion tube and mounting sleeve of the present invention;

[0017] Figure 3 This is a perspective view of the piston cylinder of the present invention;

[0018] Figure 4 This is a three-dimensional cross-sectional view of the mounting sleeve and piston cylinder of the present invention;

[0019] Figure 5 This is a perspective view of the inner sealing plug of the present invention;

[0020] Figure 6 This is a perspective view of the plug of the present invention.

[0021] Reference numerals: 1-Infusion tube, 101-Inlet channel, 102-Three-way channel, 103-Outlet channel, 104-Annular groove, 11-Plug, 2-Mounting sleeve, 201-Vent hole, 3-Fixing bracket, 31-Elastic rubber ring, 4-Piston cylinder, 401-Through groove, 5-Miniature electric push rod, 51-Charging connector, 52-Adjusting knob, 6-Inner seal, 601-One-way micro-vent, 7-Photoelectric liquid level sensor, 8-Miniature motor heater, 81-Heating ring, 82-Heat-conducting rod, 9-Annular filter screen, 91-Support ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Example 1: An infusion set based on a smart sensor, such as... Figures 1-6As shown, the device includes an infusion tube 1, a plug 11, a mounting sleeve 2, a fixing bracket 3, a piston cylinder 4, a miniature electric push rod 5, a charging connector 51, an inner sealing plug 6, and a photoelectric liquid level sensor 7. The infusion tube 1 contains an inlet channel 101, a three-way channel 102, and an outlet channel 103, with the lower end of the inlet channel 101 connected to the middle port of the three-way channel 102, and the outlet channel 103 connected to the lower port of the three-way channel 102. The inner diameter of the outlet channel 103 is smaller than the inner diameter of the three-way channel 102. The mounting sleeve 2 is connected to the upper port of the three-way channel 102 of the infusion tube 1. The fixing bracket 3 is connected to the infusion tube 1 and is fixedly attached to the mounting sleeve 2. A piston cylinder 4 is inserted into the three-way channel 102 of the infusion tube 1. The piston cylinder 4 has a through-hole opening on the side facing the inlet channel 101. The through-groove 401 structure is designed as an upwardly tapering pointed cone; a miniature electric actuator 5 is installed inside the mounting housing 2; the telescopic end of the miniature electric actuator 5 is fixedly connected to the piston cylinder 4; the miniature electric actuator 5 has a built-in battery module for power supply, and a charging connector 51 is connected to the battery module. The charging connector 51 can be connected to an external power circuit to charge the built-in battery module of the miniature electric actuator 5; an adjustment knob 52 is provided on the miniature electric actuator 5; an inner plug 6 is detachably fixed at the top of the piston cylinder 4; a photoelectric liquid level sensor 7 is installed inside the piston cylinder 4, and the photoelectric liquid level sensor 7 penetrates downward through the inner plug 6, and the built-in battery module of the miniature electric actuator 5 supplies power to the photoelectric liquid level sensor 7; a plug 11 aligned with the piston cylinder 4 is fixedly connected to the lower port of the three-way channel 102 of the infusion tube 1.

[0024] like Figure 1 , Figure 4 and Figure 5 As shown, the inner seal 6 has several upward-through unidirectional micro-vents 601; the mounting sleeve 2 has an internal and external through-vent 201; the mounting sleeve 2 is equipped with a micro motor heater 8, and the battery module built into the micro electric push rod 5 powers the micro motor heater 8; the heating component of the micro motor heater 8 is fixedly connected to a heating ring 81, and the heating ring 81 is in close contact with the piston cylinder 4; several heat-conducting rods 82 are fixedly connected to the heating ring 81, and the heat-conducting rods 82 are inserted into the piston cylinder 4.

[0025] The steps for using an infusion set based on a smart sensor according to the present invention are as follows.

[0026] Medical staff connect a medicine bottle to the inlet channel 101 of infusion tubing 1 and an infusion needle to the outlet channel 103 of infusion tubing 1. At this time, the through groove 401 of the piston cylinder 4 is connected to the inlet channel 101 of infusion tubing 1. The medicine in the external medicine bottle flows sequentially through the inlet channel 101 of infusion tubing 1, the through groove 401 of piston cylinder 4, the internal cavity of piston cylinder 4, the three-way channel 102 of infusion tubing 1, the outlet channel 103 of infusion tubing 1, and the external infusion needle. Some of the medicine is transferred through the external infusion needle. The needle flows outward, allowing the medication to rinse the infusion tubing 1, piston cylinder 4, and external infusion needle. Then, medical staff control the micro electric push rod 5 to push the piston cylinder 4 downward into the plug 11 by adjusting the knob 52. This allows the piston cylinder 4 and the plug 11 to form a complete sealing plug component, blocking the three-way channel 102 of the infusion tubing 1. At this time, the through groove 401 of the piston cylinder 4 is also not connected to the inlet channel 101 of the infusion tubing 1, preventing the medication in the infusion tubing 1 from flowing outward through the external infusion needle.

[0027] After the medical staff fixes the external infusion needle into the patient's vein, they then use the adjusting knob 52 to control the miniature electric push rod 5 to pull the piston cylinder 4 upwards away from the plug 11. This allows the through groove 401 of the piston cylinder 4 to reconnect the infusion channel 101 of the infusion tube 1, enabling the medication in the infusion tube 1 to be delivered into the patient's vein through the external infusion needle for infusion. During this process, the medication flowing in the infusion channel 101 of the infusion tube 1 passes through the piston cylinder 4... The fluid flows from the through groove 401 of the stopper 4 and the internal cavity of the piston cylinder 4 to the bottom of the three-way channel 102 of the infusion tube 1. Since the inner diameter of the outlet channel 103 is smaller than the inner diameter of the three-way channel 102, the liquid gradually accumulates at the bottom of the three-way channel 102, causing the liquid level in the three-way channel 102 to gradually rise. The photoelectric liquid level sensor 7 continuously monitors the liquid level in the three-way channel 102. When the photoelectric liquid level sensor 7 detects that the liquid level in the three-way channel... When the liquid level in channel 102 rises to a specified height range, the photoelectric liquid level sensor 7 feeds back to the miniature electric push rod 5 through the circuit system. This causes the miniature electric push rod 5 to push the piston cylinder 4 downward, reducing the cross-sectional area of ​​the connection between the through groove 401 of the piston cylinder 4 and the inlet channel 101 of the infusion tube 1. This achieves intelligent control of the flow rate of the medicine from the inlet channel 101 of the infusion tube 1 to the three-way channel 102, ensuring that the medicine is delivered to the patient's vein at a specified flow rate. When the photoelectric liquid level sensor 7 detects that the liquid level in the three-way channel 102 has dropped below the specified height range, the photoelectric liquid level sensor 7 feeds back to the miniature electric push rod 5 through the circuit system. This causes the miniature electric push rod 5 to pull the piston cylinder 4 upward, slightly increasing the cross-sectional area of ​​the connection between the through groove 401 of the piston cylinder 4 and the inlet channel 101 of the infusion tube 1, and appropriately increasing the flow rate of the medicine. This achieves intelligent control of the flow rate of the medicine, keeping it within a specified range.

[0028] During infusion, the medication continuously flows within the infusion tubing 1. When the medication contains a small amount of air bubbles, these bubbles will slowly follow the medication from the inlet channel 101 of the infusion tubing 1, through the through groove 401 of the piston cylinder 4, and into the internal cavity of the piston cylinder 4. At this time, because the density of the air bubbles is much smaller than that of the medication, the bubbles will automatically leave the medication, rise, and converge into the air above the internal cavity of the piston cylinder 4. As the amount of air accumulating in the internal cavity of the piston cylinder 4 gradually increases, the air pressure in the internal cavity of the piston cylinder 4 will gradually increase, causing the accumulated air to be pushed by the air pressure through the one-way micro-pores 601 of the inner seal 6 and discharged into the mounting sleeve 2. Air then passes through the vent 201 of the mounting sleeve 2 and is discharged into the external environment, thus automatically completing the bubble removal process and preventing bubbles from being delivered into the patient's veins with the medication. When the temperature is low, medical staff can also turn on the micro motor heater 8 during the infusion process. The micro motor heater 8 heats the medication flowing through the internal cavity of the piston cylinder 4 through the heating ring 81 and the heat-conducting rod 82, preventing the medication from condensing due to low temperature. Appropriate heating to raise the temperature of the medication can ensure the normal flow of the medication. At the same time, heating the medication can improve the efficiency of bubble removal and enhance the bubble removal effect.

[0029] When the infusion is about to finish, no more medicine will flow from the inlet channel 101 of the infusion tube 1 to the three-way channel 102. At this time, the photoelectric liquid level sensor 7 will detect that the liquid level in the three-way channel 102 is dropping significantly and rapidly. It will intelligently determine that the infusion is about to be completed. At this time, the photoelectric liquid level sensor 7 will feed back to the miniature electric push rod 5 through the circuit system, so that the miniature electric push rod 5 will push the piston cylinder 4 downward to insert into the plug 11. The piston cylinder 4 and the plug 11 form a complete sealing plug component to block the three-way channel 102 of the infusion tube 1, so that the medicine in the infusion tube 1 will no longer flow out through the external infusion needle tube, avoiding backflow. This allows the infusion to be stopped intelligently even without timely medical supervision.

[0030] Example 2, based on Example 1 above, as follows: Figures 1-6As shown, the mounting sleeve 2 is detachably and securely connected to the upper interface structure of the three-way channel 102 of the infusion tube 1 via a threaded structure; the infusion tube 1, the plug 11, and the inner sealing plug 6 are all made of medical disposable materials; the mounting sleeve 2 and the piston cylinder 4 are both made of medical-grade stainless steel; the surface of the medical-grade stainless steel used in the piston cylinder 4 is coated with a silicone oil sealing layer. The use of medical-grade stainless steel combined with the silicone oil coating allows it to be used as a high-performance sealing plug, and it has excellent thermal conductivity. Glutaraldehyde has excellent compatibility with both silicone oil and medical-grade stainless steel, and can be used to efficiently inactivate bacteria, fungi, and viruses in the piston cylinder 4. The piston cylinder 4 can be reused multiple times; an annular groove 104 structure for aligning the fixing bracket 3 is opened on the outer surface of the infusion tube 1; an elastic rubber ring 31 is fixedly connected inside the fixing bracket 3, and the fixing bracket 3 is detachably fixed to the annular groove 104 of the infusion tube 1 by the elastic rubber ring 31; after each infusion operation, it is only necessary to remove the mounting sleeve 2, the fixing bracket 3 and the piston cylinder 4 from the infusion tube 1, remove the inner plug 6 from the piston cylinder 4, and disinfect the mounting sleeve 2, the piston cylinder 4 and the heat-conducting rod 82, and replace them with new infusion tube 1, plug 11 and inner plug 6, so that the next infusion operation can be carried out, reducing the consumption of disposable parts.

[0031] Example 3, based on Example 1 above, as follows: Figures 1-6As shown, a removable and replaceable annular filter 9 is inserted inside the piston cylinder 4, and the annular filter 9 is tightly attached to the inner wall of the piston cylinder 4 and the bottom of the inner seal 6. The annular filter 9 is made of TPE thermoplastic material with elastic deformation properties. TPE thermoplastic material combines the excellent elasticity of rubber and the easy processing properties of plastic. Using TPE thermoplastic material can ensure excellent filtration effect while having good resilience, strong wear resistance, and relatively low cost. The lower end of the annular filter 9 is fixed with a support ring 91, and the support ring 91 is initially fitted on the plug 11. When the medicine contains drugs such as ampicillin that are prone to precipitate trace amounts of invisible precipitates, alkaline water is used as a solvent to significantly reduce the probability of precipitation. The annular filter 9 must also be used as a last protective barrier to filter out drug precipitation caused by acid-base imbalance or light exposure. The medicine flows from the inlet channel 101 of the infusion tube 1 to the three-way channel 1. When the piston cylinder 4 passes through the through groove 401 in section 02, the annular filter 9 performs a primary filtration process to remove any precipitates that may be carried in the medication. When the medication flows from the piston cylinder 4 into the three-way channel 102 of the infusion tube 1, the annular filter 9 performs a secondary filtration to remove any remaining precipitates. This achieves the filtering and interception of any precipitates contained in the medication. In addition, when medical personnel operate the adjustment knob 52 to push the piston cylinder 4 downward along the three-way channel 102 of the infusion tube 1 via the micro electric push rod 5, the speed of the medication flowing through the through groove 401 and the annular filter 9 of the piston cylinder 4 will be reduced. At the same time, the inner plug 6 inside the piston cylinder 4 will push the annular filter 9 downward, and the support ring 91 will be supported from the lower part of the plug 11, causing the annular filter 9 to be compressed into a folded state. At this time, the pore size of the annular filter 9 will be further reduced, enhancing the interception effect of any precipitates that may be carried in the medication.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An infusion set based on a smart sensor, comprising an infusion tube (1); characterized in that: The infusion tube (1) is provided with an inlet channel (101), a three-way channel (102), and an outlet channel (103) in sequence. The lower end of the inlet channel (101) is connected to the middle port of the three-way channel (102), and the outlet channel (103) is connected to the lower port of the three-way channel (102). The inner diameter of the outlet channel (103) is smaller than the inner diameter of the three-way channel (102). It also includes a mounting sleeve (2). The upper port of the three-way channel (102) of the infusion tube (1) is connected to the mounting sleeve (2). A fixing bracket (3) for fixing the mounting sleeve (2) is connected to the infusion tube (1). A piston cylinder (4) is inserted into the three-way channel (102) of the infusion tube (1). The piston cylinder (4) faces the inlet channel (101). The structure has a through groove (401) and the through groove (401) is a tapered structure that tapers upwards; a miniature electric push rod (5) for adjusting the height of the piston cylinder (4) is installed inside the mounting housing (2); the miniature electric push rod (5) has a built-in battery module for power supply and a charging connector (51) is connected to the battery module; an inner plug (6) is detachably fixed at the top of the piston cylinder (4); a photoelectric liquid level sensor (7) for measuring the liquid level inside the three-way channel (102) is installed inside the piston cylinder (4) and the battery module built into the miniature electric push rod (5) powers the photoelectric liquid level sensor (7); a plug (11) aligned with the piston cylinder (4) is fixed to the lower port of the three-way channel (102) of the infusion tube (1).

2. An infusion set based on a smart sensor according to claim 1, characterized in that: The miniature electric actuator (5) is equipped with an adjustment knob (52) for manually adjusting the lifting height.

3. An infusion set based on a smart sensor according to claim 1, characterized in that: The inner seal (6) has several upward-through one-way micro-pores (601) structure; the mounting sleeve (2) has an internal and external through-hole (201) structure.

4. An infusion set based on a smart sensor according to claim 3, characterized in that: The micro motor heater (8) is installed inside the housing (2), and the battery module built into the micro electric push rod (5) supplies power to the micro motor heater (8); the heating component of the micro motor heater (8) is fixedly connected to a heating ring (81), and the heating ring (81) is in close contact with the piston cylinder (4).

5. An infusion set based on a smart sensor according to claim 4, characterized in that: Several heat-conducting rods (82) are fixedly connected to the heating ring (81), and the heat-conducting rods (82) are inserted into the piston cylinder (4).

6. An infusion set based on a smart sensor according to claim 1, characterized in that: The mounting sleeve (2) is a detachable fixed connection to the upper interface structure of the three-way channel (102) of the infusion tube (1); the infusion tube (1), the plug (11) and the inner sealing plug (6) are all made of medical disposable materials; the mounting sleeve (2) and the piston cylinder (4) are both made of medical grade stainless steel; the surface of the medical grade stainless steel material used in the piston cylinder (4) is provided with a layer of silicone oil sealing layer.

7. An infusion set based on a smart sensor according to claim 6, characterized in that: An annular groove (104) structure for aligning the fixing bracket (3) is provided on the outer surface of the infusion tube (1); an elastic rubber ring (31) is fixedly connected inside the fixing bracket (3) and is locked on the annular groove (104).

8. An infusion set based on a smart sensor according to any one of claims 1-7, characterized in that: An annular filter screen (9) is inserted inside the piston cylinder (4).

9. An infusion set based on a smart sensor according to claim 8, characterized in that: The annular filter (9) uses TPE thermoplastic material with elastic deformation properties.

10. An infusion set based on a smart sensor according to claim 9, characterized in that: The lower end of the annular filter (9) is fixed with a support ring (91), and the support ring (91) is sleeved on the plug (11).

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