Infusion apparatus with exhaust device

Abstract

The utility model discloses an infusion apparatus with an exhaust device. The infusion apparatus comprises an infusion tube, a bottle stopper puncture outfit, a Murphy dropper, a flow regulator and a tail end connector, the bottle stopper puncture outfit, the Murphy dropper, the flow regulator and the tail end connector are sequentially connected through the infusion tube. The exhaust device comprises an exhaust pipe and a three-way structure; the exhaust pipe is arranged on the infusion pipe and located above the tail end connector. And the three-way structure is arranged at the joint of the exhaust pipe and the infusion pipe. According to the utility model, the three-way structure is additionally arranged on the basis that the original structure of a common disposable infusion apparatus is not changed, so that the air in the infusion tube can be quickly and thoroughly exhausted, the defect that the air can be exhausted only by separating the infusion apparatus from a needle-free joint in the common infusion apparatus is overcome, the air is prevented from entering a human body, and the air embolism is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to an infusion set with an exhaust device. Background Art

[0002] Intravenous infusion is the most common and widely used treatment method in clinical practice. However, in clinical practice, the liquid is often not replaced in time due to various reasons, resulting in liquid supply interruption and air entering below the Murphy's dropper. If not handled in time, it may cause tension and panic in patients, and may even cause the risk of air embolism. The squeezer exhaust method, the drug wrapping infusion exhaust method, and the separation infusion set exhaust method are commonly used in clinical practice. The squeezer exhaust method and the drug wrapping infusion exhaust method are often used when the liquid is left 60cm below the Murphy's dropper. The liquid below needs to be separated from the end of the infusion set and the needleless connector, and the flow regulator is opened to allow the liquid and air in the lower section of the infusion set to be discharged, and then the end of the infusion set is connected to the needleless connector to continue the infusion. The patient gathering area in the ward is an environment with a large flow of people and a high content of bacteria, viruses, mycoplasma and other microorganisms in the air. Such an operation exposes the lower end of the infusion set to the air, which may cause microbial contamination. If sodium chloride or glucose solutions drip outside, it may increase the growth and reproduction of bacteria, viruses, and mycoplasma in the air, affecting the air environment of the ward; if chemotherapy drugs or immune liquids drip outside, it may cause iatrogenic damage. Furthermore, the minimum residual volume of the infusion set is 3-7 ml. If it is directly discharged, it will cause a waste of liquid medicine and cannot guarantee the accuracy of the drug dosage used by the patient. Therefore, it is necessary to develop an infusion set that can achieve effective exhaust, no waste, and no growth and reproduction of air bacteria and viruses.

[0003] Chinese patent CN205360120U discloses an infusion device capable of measuring venous pressure, comprising an infusion device body, a conversion tee connected between the infusion device body inlet tube and the Murphys drip pot. Graduation lines are set on the infusion pipeline, fixed adhesive tapes are set at the zero point and the highest scale of the scale line, and an automatic exhaust valve is set at the end of the infusion pipeline of the infusion device body. The utility model is used during infusion, the zero point of the scale is flush with the heart and fixed, the pipeline in the scale area is placed vertically and fixed, the conversion tee is connected to the infusion passage under normal conditions and can be used for conventional infusion, when the venous pressure needs to be measured, the conversion tee is rotated to terminate the infusion and the infusion passage is connected to the atmosphere, the liquid in the pipeline can drop to the liquid level under the action of gravity and no longer drop, and the venous pressure value can be obtained by reading the scale value of the liquid level. When it is necessary to continue the infusion, the tee is converted to the air inlet passage connected to the wall of the infusion passage, the infusion will continue, and the gas in the pipeline is discharged through the automatic exhaust valve. The utility model reduces the workload of doctors, is extremely convenient to measure venous pressure, has a simple structure, and is reliable. The basic principle of the automatic exhaust valve used in the above patent is to set an exhaust water-blocking membrane in the direction connected to the infusion pipeline, so that liquid cannot pass through the membrane. However, the automatic exhaust valve exhausts slowly, and the liquid in the infusion tube falls quickly, which will make the exhaust incomplete. Utility Model Content

[0004] The utility model aims to provide an infusion set with an exhaust device, which adds a three-way structure on the basis of the original structure of an ordinary disposable infusion set, so as to quickly and completely exhaust the air in the infusion tube, prevent the air from entering the human body, and avoid the occurrence of air embolism.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An infusion set with an exhaust device comprises an infusion tube, a bottle stopper piercing device, a Murphy's dropper, a flow regulator, and an end joint; the bottle stopper piercing device, the Murphy's dropper, the flow regulator, and the end joint are sequentially connected through the infusion tube; the infusion set also comprises an exhaust device, the exhaust device comprises an exhaust pipe and a three-way structure; the exhaust pipe is arranged on the infusion tube and is located above the end joint; the three-way structure is arranged at the connection between the exhaust pipe and the infusion tube.

[0007] Preferably, the three-way structure includes an auxiliary tube, a return spring, a baffle, a blocking block, a connecting plate, and a pressing device; the pressing device is arranged on the exhaust pipe; the auxiliary tube is arranged on the reverse extension line of the exhaust pipe, one end of which is connected to the infusion tube, and the other end is closed; the return spring and baffle are arranged in the auxiliary tube, one end of the return spring is connected to the closed end of the auxiliary tube, and the other end is connected to the baffle; the blocking block is arranged in the exhaust pipe, one end of which extends into the infusion tube and is connected to the baffle through the connecting plate, and the other end is connected to the pressing device; a leakage hole is provided on the connecting plate.

[0008] Preferably, the pressing device includes a pressure rod, a small ball, and a compression spring. The pressure rod is arranged on the exhaust pipe, and its lower end extends into the exhaust pipe; the small ball is arranged at the lower end of the pressure rod and contacts with the block; the compression spring is sleeved on the pressure rod, and its lower end is connected to the outer wall of the exhaust pipe, and the upper end is limited by the flange on the upper side wall of the pressure rod.

[0009] Preferably, it also includes a shell cover, which is arranged outside the compression spring.

[0010] Preferably, the surface of the blocking block in contact with the ball is a curved surface.

[0011] Preferably, it also includes a wiping strip and a slot; the strip is integrally arranged on the side walls of the baffle, the connecting piece and the blocking block; the slot is integrally arranged on the auxiliary tube, the infusion tube and the exhaust tube, and corresponds to the strip; the strip is inserted into the slot.

[0012] Preferably, an air bag is also included, and the air bag is connected to the exhaust pipe outlet.

[0013] Preferably, it also includes an air filter, which is arranged on the airbag.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adds a three-way structure to the original structure of an ordinary disposable infusion set, which can discharge the air in the infusion tube, making up for the shortcoming that the ordinary infusion set needs to separate the infusion set and the needleless connector to discharge the air, preventing air from entering the human body and avoiding air embolism.

[0016] 2. The three-way structure of the utility model adopts structures such as baffles, blocking blocks, and leakage holes, combined with a pressing device to achieve rapid switching of the infusion passage and the exhaust passage, thereby exhausting the air from the exhaust pipe. The operation is convenient and quick, and the exhaust efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 It is a front cross-sectional view of a local structure of an embodiment of the utility model;

[0019] Figure 3 It is a top view of a partial structure of an embodiment of the utility model;

[0020] The serial numbers and names in the figure are as follows:

[0021] 1-infusion tube; 2-bottle stopper puncture device; 3-Murphy-type dropper pipette connection port; 4-flow regulator; 5-end connector; 6-exhaust pipe; 7-auxiliary pipe; 8-reset spring; 9-blocking plate; 10-blocking block; 11-connecting plate; 12-leakage hole; 13-pressure rod; 14-small ball; 15-compression spring; 16-shell cover; 17-wiping strip; 18-slot; 19-air bag; 20-air filter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] An infusion set with an exhaust device, such as Figure 1As shown, it includes an infusion tube 1, a bottle cork piercer 2, a Murphy-type dropper 3, a flow regulator 4, an exhaust device, and a terminal joint 5; the bottle cork piercer 2, the Murphy-type dropper 3, the flow regulator 4, the exhaust device, and the terminal joint 5 are sequentially connected through the infusion tube 1; the exhaust device includes an exhaust pipe 6 and a three-way structure; the exhaust pipe 6 is arranged on the infusion tube 1, above the terminal joint 5; the three-way structure is arranged at the connection between the exhaust pipe 6 and the infusion tube 1; the three-way structure can adopt a three-way valve or any other structure that can realize a three-way. During normal infusion, the three-way structure closes the exhaust pipe 6 passage, opens the infusion tube 1 passage, and the liquid medicine flows continuously from the infusion tube 1 for infusion.

[0025] In this embodiment, the three-way structure is as follows: Figure 2As shown, it includes an auxiliary tube 7, a reset spring 8, a baffle 9, a blocking block 10, a connecting piece 11, and a pressing device; the pressing device includes a pressure rod 13, a small ball 14, and a compression spring 15. The pressure rod 13 is arranged on the exhaust pipe 6, and its lower end extends into the exhaust pipe 6; the small ball 14 is arranged at the lower end of the pressure rod 13; the compression spring 15 is sleeved on the pressure rod 13, and its lower end is connected to the outer wall of the exhaust pipe 6, and the upper end is limited by the flange on the upper side wall of the pressure rod 13; the auxiliary tube 7 is arranged on the reverse extension line of the exhaust pipe 6, one end of which is connected to the infusion tube 1, and the other end is closed; the reset spring 8. The baffle 9 is arranged in the auxiliary tube 7. One end of the reset spring 8 is connected to the closed end of the auxiliary tube 7, and the other end is connected to the baffle 9. The baffle 9 is a circular piece. The block 10 is formed by staggered splicing of two upper and lower semi-cylindrical structures. One end of the block 10 is arranged in the exhaust pipe 6, and the other end extends into the infusion tube 1. The block 10 is connected to the baffle 9 through the connecting piece 11, and the other end is in contact with the ball 14. The side of the block 10 in contact with the ball 14 is an arc surface. The side wall of the connecting piece 11 is in close contact with the inner wall of the infusion tube 1, and a leakage hole 12 is provided thereon, and the liquid medicine can only pass through the leakage hole 12. During normal infusion, the block 10 closes the passage of the exhaust pipe 6, the reset spring 8 is in a natural state, the baffle 9 is located in the open end of the auxiliary tube 7, and blocks the opening of the auxiliary tube 7 so that the liquid medicine cannot enter the auxiliary tube 7. The leakage hole 12 is located in the infusion tube 1, so that the passage of the infusion tube 1 is open, and the liquid medicine flows continuously from the leakage hole 12 for infusion. When air is found in the infusion tube 1, firstly perform normal infusion to make the air drop to the junction of the exhaust pipe 6 and the infusion tube 1, then quickly press the pressure rod 13, the small ball 14 drops, and the block 10 is pushed into the infusion tube 1, the baffle 9 compresses the reset spring 8 and brings the connecting piece 11 and the leakage hole 12 into the auxiliary tube 7, the block 10 closes the passage of the infusion tube 1, the passage of the exhaust pipe 6 is opened, and the air enters the exhaust pipe 6 from the staggered openings of the upper and lower semi-cylindrical structures of the block 10; when the air is completely exhausted, quickly release the pressure rod 13, the reset spring 8 is reset, the connecting piece 11 and the leakage hole 12 return to the normal infusion state, the passage of the infusion tube 1 is opened, and the block 10 closes the passage of the exhaust pipe 6 again. Compared with the three-way valve, the three-way structure adopted in this embodiment has the advantages of faster response, more convenient operation, and no liquid medicine will be brought out.

[0026] In this embodiment, a shell cover 16 is further included. The shell cover 16 is arranged outside the compression spring 15 to protect and conceal the spring, while also ensuring the sealing of the device.

[0027] In this embodiment, if Figure 3As shown, it also includes a wiping strip 17 and a slot 18; the inserting strip 17 is integrally arranged on the side walls of the baffle 9, the connecting piece 11, and the blocking block 10; the slot 18 is integrally arranged on the auxiliary tube 7, the infusion tube 1, and the exhaust pipe 6, and corresponds to the inserting strip; the inserting strip 17 is inserted into the slot 18 and can move along the slot 18. The directions of the wiping strip 17 and the slot 18 are parallel to the directions of the auxiliary tube 7 and the exhaust pipe 6, so that the baffle 9, the connecting piece 11, and the blocking block 10 can move in a straight line and will not rotate during the movement.

[0028] In this embodiment, an air bag 19 is also included, and the air bag 19 is connected to the outlet of the exhaust pipe 6. By squeezing the air bag 19, air can be quickly sucked out.

[0029] In this embodiment, an air filter 20 is also included, and the air filter 20 is arranged on the air bag 19. The arrangement of the air filter 20 can prevent external polluted air from entering the air bag 19 on the one hand, and can facilitate pressure relief when squeezing the air bag 19 on the other hand, so as to extract the air.

[0030] In other embodiments of the utility model, an exhaust pipe with an air filter may be provided on the infusion tube 1 and below the bottle stopper piercer 2 to slowly remove the air brought out of the medicine bottle or medicine bag.

[0031] In other embodiments of the utility model, a bottle stopper piercer cover may be provided on the bottle stopper piercer to protect the bottle stopper piercer.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An infusion set with an exhaust device, comprising an infusion tube (1), a bottle stopper piercing device (2), a Murphy's dropper (3), a flow regulator (4), and a terminal joint (5); the bottle stopper piercing device (2), the Murphy's dropper (3), the flow regulator (4), and the terminal joint (5) are sequentially connected through the infusion tube (1), characterized in that: The invention also comprises an exhaust device, the exhaust device comprising an exhaust pipe (6) and a three-way structure; the exhaust pipe (6) is arranged on the infusion pipe (1) and is located above the end joint (5); the three-way structure is arranged at the connection between the exhaust pipe (6) and the infusion pipe (1); the three-way structure comprises an auxiliary pipe (7), a return spring (8), a baffle (9), a blocking block (10), a connecting piece (11), and a pressing device; the pressing device is arranged on the exhaust pipe (6); the auxiliary pipe (7) is arranged at the exhaust pipe (6) The auxiliary tube (7) is provided with a return spring (8) and a baffle (9), one end of which is connected to the closed end of the auxiliary tube (7) and the other end is connected to the baffle (9). The blocking block (10) is provided in the exhaust pipe (6), one end of which extends into the infusion tube (1) and is connected to the baffle (9) via a connecting piece (11) and the other end is connected to the pressing device. The connecting piece (11) is provided with a leakage hole (12).

2. The infusion set with exhaust device according to claim 1, characterized in that: The pressing device comprises a pressing rod (13), a small ball (14), and a compression spring (15); the pressing rod (13) is arranged on the exhaust pipe (6), and its lower end extends into the exhaust pipe (6); the small ball (14) is arranged at the lower end of the pressing rod (13) and contacts with the blocking block (10); the compression spring (15) is sleeved on the pressing rod (13), its lower end is connected to the outer wall of the exhaust pipe (6), and its upper end is limited by the flange on the upper side wall of the pressing rod (13).

3. The infusion set with exhaust device according to claim 2, characterized in that: It also comprises a shell cover (16), wherein the shell cover (16) is arranged outside the compression spring (15).

4. The infusion set with exhaust device according to claim 2, characterized in that: The surface of the blocking block (10) in contact with the small ball (14) is an arc surface.

5. The infusion set with exhaust device according to claim 1, characterized in that: It also comprises an inserting strip (17) and a slot (18); the inserting strip (17) is integrally arranged on the side walls of the baffle (9), the connecting strip (11) and the blocking block (10); the slot (18) is integrally arranged on the auxiliary tube (7), the infusion tube (1) and the exhaust tube (6) and corresponds to the inserting strip (17); the inserting strip (17) is inserted into the slot (18).

6. The infusion set with exhaust device according to claim 1, characterized in that: It also comprises an air bag (19), wherein the air bag (19) is connected to the outlet of the exhaust pipe (6).

7. The infusion set with exhaust device according to claim 6, characterized in that: It also includes an air filter (20), wherein the air filter (20) is arranged on the air bag (19).

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