Disposable precise infusion apparatus capable of automatically exhausting air and automatically stopping liquid

Abstract

The utility model relates to a disposable precise infusion apparatus capable of automatically exhausting and stopping liquid, which comprises a bottle stopper puncture outfit, a side branch of the bottle stopper puncture outfit is connected with an exhaust pipe, and an air filter is arranged on the exhaust pipe; a short tube is inserted into a lower branch of the bottle stopper puncture outfit, and the lower part of the short tube is connected with a drip chamber assembly capable of automatically exhausting and automatically stopping liquid; the drip chamber assembly comprises a drip chamber cover, a drip chamber cylinder and a drip chamber base which are separated. The drip chamber base is composed of a liquid collecting groove in the upper portion and a liquid discharging pipe in the lower portion. A double-layer clamping groove is formed in the side wall of the liquid collecting groove in the upper part of the drip chamber base and is used for inserting the drip chamber barrel; the inner wall of the liquid collecting groove of the drip chamber base is provided with a circle of round-table-shaped liquid medicine filtering membrane supporting table, and the liquid medicine filtering membrane supporting table is used for supporting the liquid medicine filtering membrane. And the liquid medicine filtering membrane is an air-blocking and water-permeable membrane. Liquid and gas in a pipeline can be fully and automatically discharged through the exhaust hole and the exhaust seam; the liquid medicine filtering membrane has an automatic liquid stopping function due to the air-blocking and water-permeable effects.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, in particular to a disposable precision infusion set with automatic exhaust and liquid stopping. Background Art

[0002] A disposable infusion set is a common medical consumable, mainly used to establish a channel between the vein and the drug solution for intravenous infusion. It consists of multiple connected parts, including an intravenous needle or injection needle, a needle cap, an infusion hose, a drug filter, a flow rate regulator, a drip pot, a bottle stopper puncture device and an air filter. Some infusion sets are also equipped with functional components such as injection parts and drug addition ports.

[0003] When the liquid medicine of a common infusion device begins to enter the drip bucket, it is very easy to form a mixture of gas and liquid. The gas-liquid mixture will quickly enter the infusion pipeline below the drip bucket, forming bubbles during infusion. Bubbles are often adsorbed on the tube wall below the drip bucket. When infusing, medical staff must completely expel the bubbles in the infusion catheter before infusing. Medical staff need to pinch the bubbles with their fingers, which increases the workload of medical staff. If the exhaust is incomplete, it will also cause hidden dangers to the patient's health.

[0004] After the drug solution is infused, if the solution is not stopped in time, air will enter the pipeline, and the air will enter the human blood vessels. Or if it is not completely sealed, it will cause blood to backflow, which will also pose a threat to the patient's health.

[0005] The Chinese patented exhaust and liquid-stopping infusion device, application number 201510190517.6, has an exhaust device and a liquid-stopping device in the drip bucket, which has a complex structure and poor effect.

[0006] Therefore, a disposable precision infusion set with automatic exhaust and automatic liquid stopping function is designed to solve the above problems. Summary of the invention

[0007] In order to overcome the above shortcomings, the utility model provides a disposable automatic exhaust and automatic liquid stopping precision infusion device, including a bottle plug piercer, the side branch of the bottle plug piercer is connected to an exhaust pipe, and an air filter is arranged on the exhaust pipe;

[0008] The lower branch of the bottle stopper piercer is plugged with a short tube, and the lower part of the short tube is connected to a drip bucket assembly with automatic exhaust and automatic liquid stopping;

[0009] The drip bucket assembly comprises a separate drip bucket cover, a drip bucket tube and a drip bucket base; the drip bucket cover is sealed at the top and open at the bottom, a liquid outlet dropper is provided at the center of the upper sealed portion of the drip bucket cover, a short tube is connected to the upper portion of the liquid outlet dropper, and the lower portion of the drip bucket cover is sleeved on the drip bucket tube; an exhaust hole is provided on the inner side wall of the drip bucket cover; and the drip bucket base is plugged at the bottom of the drip bucket tube;

[0010] The drip bucket base is funnel-shaped, and is composed of an upper liquid collecting tank and a lower liquid tube; the side wall of the upper liquid collecting tank of the drip bucket base is a double-layer card slot for plugging the drip bucket tube; the inner wall of the liquid collecting tank of the drip bucket base is provided with a circle of truncated cone-shaped liquid medicine filter membrane support platform, and the liquid medicine filter membrane support platform is used to support the liquid medicine filter membrane; the liquid medicine filter membrane is a gas-blocking and water-permeable membrane;

[0011] The inner bottom of the liquid collecting tank of the drip bucket base protrudes upward and is provided with a plurality of exhaust slits that penetrate up and down, wherein the exhaust slits are narrow strip-shaped gaps, and the plurality of exhaust slits are radially arranged from the center of the inner bottom of the liquid collecting tank to the periphery like umbrella ribs; the top end of the liquid lowering pipe at the lower part of the drip bucket base is sealed and connected to the center of the bottom surface of the liquid collecting tank, and a plurality of liquid outlet holes are axially opened on the peripheral side of the upper part of the liquid lowering pipe at the lower part of the drip bucket base;

[0012] The lower part of the lower liquid pipe at the lower part of the drip bucket base is connected with a long tube of the infusion device, a regulator is arranged on the long tube of the infusion device, and the end of the long tube of the infusion device is connected with a venous infusion needle through a spiral coupling.

[0013] Furthermore, the air filter, the drip bucket cover and the spiral two-way valve are all made of ABS material.

[0014] Preferably, the exhaust pipe is made of HDPE.

[0015] Particularly, the short tube, the drip tube and the long tube of the infusion set are made of PVC material.

[0016] Particularly, an exhaust plug is inserted into the upper part of the exhaust hole on the peripheral side of the drip bucket cover, and the exhaust plug is made of one of PVC, PP or sintered PE materials.

[0017] Preferably, the exhaust plug is provided with an exhaust membrane, and the exhaust membrane is made of one of glass fiber and PTFE.

[0018] Particularly, the material of the regulator is one of ABS or PE.

[0019] In particular, the exhaust plug is colorful and easy to identify, which can prevent clinicians from mistaking it for a drug addition port and prevent misoperation.

[0020] Particularly, the width of the exhaust slit is 0.5-1.2 mm.

[0021] The beneficial effects of the utility model are:

[0022] The disposable automatic exhaust and automatic liquid stopping precision infusion device described in the utility model is provided with three parts, namely, the drip bucket cover, the drip bucket tube and the drip bucket base, through the drip bucket assembly, and has the following advantages: 1. The exhaust hole and the exhaust slit can fully and automatically exhaust the liquid and the gas in the pipeline by using the atmospheric pressure and the surface tension of the liquid; 2. The liquid medicine filter membrane has the function of automatic liquid stopping due to the air-blocking and water-permeable effect, so as to prevent the gas from descending and entering the blood vessel when the dripping is completed; the workload of medical care is reduced and the danger of infusion is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the drip bucket assembly;

[0025] Figure 3 It is a three-dimensional picture of the base of the drip bucket;

[0026] Figure 4 is a cross-sectional view of the drip bucket base;

[0027] in:

[0028] 1-bottle stopper puncture device; 2-air filter; 3-exhaust pipe; 4-short tube; 5-exhaust plug; 6-exhaust membrane; 7-drip bucket cover; 8-drip bucket tube; 9-drug solution filter membrane; 10-drip bucket base; 11-infusion set long tube; 12-regulator; 13-spiral two-way; 14-intravenous infusion needle;

[0029] 7-1-liquid outlet dropper; 7-2-vent hole;

[0030] 10-1: liquid filter membrane support platform; 10-2: exhaust slit; 10-3: liquid outlet hole; DETAILED DESCRIPTION

[0031] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings.

[0032] Example

[0033] like Figure 1 As shown, a disposable automatic exhaust and automatic liquid stopping precision infusion device comprises a bottle stopper piercer 1, a side branch of the bottle stopper piercer 1 is connected to an exhaust pipe 3, and an air filter 2 is arranged on the exhaust pipe 3;

[0034] It is characterized in that the lower branch of the bottle plug piercer 1 is plugged with a short tube 4, and the lower part of the short tube 4 is connected to a drip bucket assembly with automatic exhaust and automatic liquid stopping;

[0035] like Figure 2As shown, the drip bucket assembly includes a split drip bucket cover 7, a drip bucket tube 8 and a drip bucket base 10; the drip bucket cover 7 is sealed at the top and open at the bottom, a liquid outlet dropper 7-1 is provided at the center of the upper cover of the drip bucket cover 7, the upper part of the liquid outlet dropper 7-1 is connected to a short tube 4, and the lower part of the drip bucket cover 7 is sleeved on the drip bucket tube 8; the inner side wall of the drip bucket cover 7 is provided with an exhaust hole 7-2; the bottom of the drip bucket tube 8 is plugged with a drip bucket base 10;

[0036] like Figure 3 and Figure 4 As shown, the drip bucket base 10 is funnel-shaped, and the drip bucket base 10 is composed of an upper liquid collecting tank and a lower liquid down pipe; the side wall of the liquid collecting tank on the upper part of the drip bucket base 10 is a double-layer card slot for plugging the drip bucket tube 8; the inner wall of the liquid collecting tank of the drip bucket base 10 is provided with a circle of truncated cone-shaped liquid medicine filter membrane support platform 10-1, and the liquid medicine filter membrane support platform 10-1 is used to support the liquid medicine filter membrane 9; the liquid medicine filter membrane 9 is an air-blocking and water-permeable membrane; due to the air-blocking and water-permeable effect of the liquid medicine filter membrane 9, the air in the drip bucket assembly cannot go down, and finally the liquid stopping function is achieved;

[0037] The inner bottom of the liquid collecting tank of the drip bucket base 10 protrudes upward and is provided with a plurality of exhaust slits 10-2 that penetrate up and down. The exhaust slits 10-2 are narrow strip-shaped gaps, and the plurality of exhaust slits 10-2 are radially arranged from the center of the inner bottom of the liquid collecting tank to the periphery like umbrella ribs; the top end of the liquid lowering pipe at the lower part of the drip bucket base 10 is sealed and connected to the center of the bottom surface of the liquid collecting tank, and a plurality of liquid outlet holes 10-3 are axially opened on the circumference of the upper part of the liquid lowering pipe at the lower part of the drip bucket base 10;

[0038] The lower part of the lower liquid pipe at the lower part of the drip bucket base 10 is connected to the long tube 11 of the infusion device. The following is the prior art and will not be described in detail. Figure 1 As shown, a regulator 12 is provided on the long tube 11 of the infusion device, and the end of the long tube 11 of the infusion device is connected to an intravenous infusion needle 14 through a spiral coupling 13.

[0039] Furthermore, the air filter 2, the drip funnel cover 7 and the spiral two-way valve 13 are all made of ABS material.

[0040] Preferably, the exhaust pipe 3 is made of HDPE.

[0041] Particularly, the short tube 4 , the drip tube 8 and the long tube 11 of the infusion device are made of PVC material.

[0042] Particularly, an exhaust plug (5) is inserted into the upper part of the exhaust hole on the peripheral side of the drip bucket cover, and the exhaust plug 5 is made of one of PVC, PP or sintered PE materials.

[0043] Preferably, the exhaust plug (5) is provided with an exhaust membrane (6) therein, and the exhaust membrane 6 is made of one of glass fiber and PTFE.

[0044] Particularly, the material of the regulator 12 is ABS or PE.

[0045] In particular, the exhaust plug 5 is colorful and easy to identify, which can prevent clinicians from mistaking it for a drug addition port and prevent misoperation.

[0046] Particularly, the width of the exhaust slit 10-2 is 0.5-1.2 mm.

[0047] Directions:

[0048] After puncturing the medicine bottle, the liquid medicine in the medicine bottle passes through the short tube 4, and the gas in the short tube 4 is discharged through the exhaust pipe 3 and the air filter 2; the liquid medicine then enters the dropper tube 8 through the liquid outlet dropper 7-1, and the air in the dropper tube 8 is exhausted through the exhaust hole 7-2 of the dropper cover 7;

[0049] When the amount of liquid medicine in the drip bucket 8 increases to the point where the upper liquid level submerges the lower end of the exhaust hole 7-2, the liquid level blocks the exhaust hole 7-2, and a closed space is formed in the drip bucket 8. At this point, the liquid medicine stops entering the drip bucket 8, and automatic liquid stopping is achieved, keeping the liquid level unchanged, and the liquid medicine filling of the drip bucket 8 is completed;

[0050] The liquid medicine is filtered through the liquid medicine filter membrane 9 on the drip bucket base 10, and the liquid medicine is further exhausted through the exhaust slit 10-2. There is a certain space between the liquid medicine filter membrane 9 and the bottom of the liquid outlet 10-3. If the air in the space is not completely exhausted, the exhaust slit 10-2 has a small spacing, which can form a certain surface tension, thereby preventing the gas from being discharged therefrom.

[0051] Then the medicine enters the lower liquid tube of the drip bucket base 10 through the liquid outlet 10-3, and then enters the long tube 11 of the infusion device. The medicine will flow naturally along the pipeline of the long tube 11 of the infusion device, and the air will be squeezed out at the same time. After the liquid flows out from the intravenous infusion needle 14, the intravenous infusion needle 14 is inserted into the human vein, and the medicine is injected into the human body through the intravenous infusion needle 14 to achieve infusion.

[0052] The principle of automatic exhaust of the exhaust slit 10-2 is: since the liquid has surface tension, the pressure of the liquid cannot overcome the surface tension formed by the liquid in the liquid-guiding gap at the beginning, and the liquid cannot enter the axial through hole; when the liquid is dripped step by step, the liquid submerges the exhaust slit 10-2 of the liquid-guiding gap, and the air pressure of the drip bucket 8 increases at the same time, when the sum of the air pressure and the pressure of the liquid makes the pressure overcome the surface tension formed by the liquid in the exhaust slit 10-2 of the liquid-guiding gap, the liquid breaks through the gap and enters the liquid outlet hole 10-3 to conduct the liquid. At this time, since a period of time has passed, the bubbles produced when dripping have floated up, and the liquid entering the bottom of the axial through hole does not have bubbles, which can effectively prevent the generation of bubbles.

[0053] The principle of automatic liquid stopping of the medicine liquid filter membrane 9 is: due to the air-blocking and water-permeable function of the medicine liquid filter membrane 9, when the medicine liquid is finished dripping, the air in the drip bucket assembly cannot go down, and finally the liquid stopping function is achieved, thereby preventing air from entering the human body after the medicine liquid is finished dripping and causing damage; and the pressure of the pipeline below the medicine liquid filter membrane 9 is constant, which can prevent blood reflux. At the same time, the air-blocking and water-permeable medicine liquid filter membrane can also play a role in precisely filtering the medicine liquid according to the different micropore diameters.

[0054] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A disposable automatic exhaust and automatic liquid stopping precision infusion device, comprising a bottle stopper piercer (1), a side branch of the bottle stopper piercer (1) connected to an exhaust pipe (3), and an air filter (2) is provided on the exhaust pipe (3); The lower branch of the bottle stopper piercer (1) is plugged with a short tube (4), which is characterized in that: The lower part of the short tube (4) is connected to a drip bucket assembly with automatic exhaust and automatic liquid stopping; The drip bucket assembly comprises a separate drip bucket cover (7), a drip bucket tube (8) and a drip bucket base (10); the drip bucket cover (7) is sealed at the top and open at the bottom, a liquid outlet dropper (7-1) is provided at the center of the upper sealed portion of the drip bucket cover (7), the upper portion of the liquid outlet dropper (7-1) is connected to a short tube (4), and the lower portion of the drip bucket cover (7) is sleeved on the drip bucket tube (8); an exhaust hole (7-2) is provided on the inner side wall of the drip bucket cover (7); and the drip bucket base (10) is plugged at the bottom of the drip bucket tube (8); The drip bucket base (10) is funnel-shaped, and the drip bucket base (10) is composed of an upper liquid collecting tank and a lower liquid discharge pipe; the side wall of the upper liquid collecting tank of the drip bucket base (10) is a double-layer card slot for plugging the drip bucket tube (8); the inner wall of the liquid collecting tank of the drip bucket base (10) is provided with a circle of truncated cone-shaped liquid medicine filter membrane support platform (10-1), and the liquid medicine filter membrane support platform (10-1) is used to support the liquid medicine filter membrane (9); the liquid medicine filter membrane (9) is a gas-blocking and water-permeable membrane; The inner bottom of the liquid collecting tank of the drip bucket base (10) protrudes upward and is provided with a plurality of exhaust slits (10-2) that penetrate up and down, the exhaust slits (10-2) being narrow strip-shaped slits, and the plurality of exhaust slits (10-2) are radially arranged from the center of the inner bottom of the liquid collecting tank to the periphery like umbrella ribs; the top end of the liquid lowering pipe at the lower part of the drip bucket base (10) is sealed and connected to the center of the bottom surface of the liquid collecting tank, and a plurality of liquid outlet holes (10-3) are axially opened on the circumference of the upper part of the liquid lowering pipe at the lower part of the drip bucket base (10); The lower part of the lower liquid pipe at the lower part of the drip bucket base (10) is connected to a long infusion tube (11), a regulator (12) is arranged on the long infusion tube (11), and the end of the long infusion tube (11) is connected to a venous infusion needle (14) via a spiral coupling (13).

2. The disposable automatic exhaust and automatic liquid stopping precision infusion set according to claim 1, characterized in that: The air filter (2), the drip bucket cover (7) and the spiral two-way valve (13) are all made of ABS material.

3. The disposable automatic exhaust and liquid stopping precision infusion set according to claim 2, characterized in that: The exhaust pipe (3) is made of HDPE material.

4. The disposable automatic exhaust and automatic liquid stopping precision infusion set according to claim 3, characterized in that: The short tube (4), the drip tube (8) and the long tube (11) of the infusion device are made of PVC material.

5. The disposable automatic exhaust and automatic liquid stopping precision infusion set according to claim 4, characterized in that: An exhaust plug (5) is inserted into the upper part of the exhaust hole on the peripheral side of the drip bucket cover, and the exhaust plug (5) is made of one of PVC, PP or sintered PE materials.

6. The disposable automatic exhaust and automatic liquid stopping precision infusion set according to claim 5, characterized in that: The exhaust plug (5) is provided with an exhaust membrane (6) therein, and the exhaust membrane (6) is made of one of glass fiber and PTFE.

7. The disposable automatic exhaust and automatic liquid stopping precision infusion set according to claim 6, characterized in that: The material of the regulator (12) is one of ABS and PE.

8. The disposable automatic exhaust and liquid stopping precision infusion set according to claim 7, characterized in that: The exhaust plug (5) is arranged to be colorful.

9. The disposable automatic exhaust and automatic liquid stopping precision infusion set according to claim 8, characterized in that: The width of the exhaust slit (10-2) is 0.5-1.2 mm.

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