CN214018756U - Automatic dressing change infusion set - Google Patents

Abstract

The utility model belongs to the technical field of medical supplies, concretely relates to automatic transfusion system of changing dressings. The utility model provides an automatic transfusion system of changing dressings includes that the infusion is responsible for, multistage infusion branch pipe and vein pjncture needle, and multistage infusion branch pipe sets up and is responsible for the feed liquor end at the infusion. Each stage of gas inlet is provided with a liquid-stopping gas inlet valve, except the first stage of liquid-stopping liquid inlet valve which is communicated with the outside, the other next stage of liquid-stopping gas inlet valves are communicated with the adjacent upper stage of gas outlets; a bidirectional stop valve is arranged between the liquid outlet end of the infusion branch pipe and the gas outlet, and the vertical distance between the next-stage bidirectional stop valve and the liquid inlet end of the infusion main pipe is smaller than the vertical distance between the adjacent previous-stage bidirectional stop valve and the liquid inlet end of the infusion main pipe along the extension direction of the infusion main pipe. According to the communicating vessel principle, the upper stage transfusion is finished, the lower stage transfusion is automatically started, so that the multiple transfusion bags are sequentially transfused, a nurse is not required to manually change needles, and the problems of liquid medicine pollution and countercurrent are avoided.

Description

Automatic dressing change infusion set

Technical Field

The utility model belongs to the technical field of medical supplies, concretely relates to automatic transfusion system of changing dressings.

Background

The infusion apparatus is a common medical consumable material and generally comprises a vein puncture needle, a needle head protective cap, an infusion hose, a liquid medicine filter, a flow rate regulator, a drip cup, a bottle stopper puncture outfit, an air filter and the like which are connected. Most of traditional transfusion systems can only be connected with one transfusion bag once, if a plurality of bags of liquid medicines are transfused successively, manual medicine changing is needed, but the following problems exist in the manual medicine changing:

1. the number of nurses in a hospital is limited, if the number of patients is large, one nurse often needs to nurse patients in a plurality of wards, and the nurse is also responsible for various tasks such as dispensing, injection, needle pulling and the like, so that air or blood returning is easy to enter an infusion apparatus once the medicine cannot be changed in time, and potential safety hazards exist;

2. in order to prevent air or blood from entering the infusion apparatus, a nurse is usually required to change the medicine in advance, and residual liquid medicine is left in the infusion bag at the moment, so that waste is caused;

3. the various liquid medicines input by the patient have time sequence, and the nurse is easy to take the wrong infusion bag when changing the medicine in a hurry.

In view of the above, there is a need for an infusion apparatus capable of presetting an infusion sequence without manual drug replacement.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that current transfusion system relies on the manual work to change dressings to provide an automatic transfusion system that changes dressings that can predetermine infusion order.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides an automatic dressing change infusion apparatus, which comprises an infusion main pipe, a vein puncture needle arranged at the liquid outlet end of the infusion main pipe and a plurality of stages of infusion branch pipes arranged in sequence at the liquid inlet end of the infusion main pipe, wherein a bottle plug puncture needle and an air inlet are arranged at the liquid inlet end of each stage of the infusion branch pipe, and an air outlet is arranged between the liquid inlet end and the liquid outlet end of the infusion branch pipe except the last stage;

the air inlet of each stage of the infusion branch pipe is provided with a liquid stopping air inlet valve, wherein the liquid stopping air inlet valve of the first stage of the infusion branch pipe is communicated with the outside, and the liquid stopping air inlet valves of the rest of the next stage of the infusion branch pipe are communicated with the air outlet of the adjacent previous stage of the infusion branch pipe;

every grade be provided with the two-way stop valve that is used for controlling the two-way break-make of liquid medicine between the play liquid end of infusion branch pipe and the gas outlet, and follow the infusion is responsible for extending direction, next stage on the infusion branch pipe two-way stop valve with the infusion is responsible for the perpendicular distance between the feed liquor end and is less than adjacent last stage on the infusion branch pipe two-way stop valve with the infusion is responsible for the perpendicular distance between the feed liquor end.

Preferably, in the automatic dressing change infusion apparatus with the structure, each two-way stop valve comprises a branch pipe drip cup, a floating ball arranged in the cavity of the branch pipe drip cup and moving along with the liquid level, and sealing parts arranged at two ends in the cavity of the branch pipe drip cup and hermetically matched with the floating ball.

Further preferably, in the automatic dressing change infusion apparatus with the structure, the floating ball is in an oblong shape, and convex round ends hermetically matched with the sealing element are arranged at two ends of the floating ball;

the sealing element is of a horn-shaped structure, two flared ends of the sealing element are arranged oppositely, and two necked ends of the sealing element are respectively arranged at a liquid inlet end and a liquid outlet end of the branch pipe drip cup and are communicated with the infusion branch pipe.

Further preferably, in the automatic dressing change infusion apparatus with the structure, an eccentric cavity facing the liquid inlet end of the branch pipe drip cup is arranged inside the floating ball.

Further preferably, in the automatic dressing change infusion set with the structure, a branch pipe speed regulator is arranged on each stage of infusion branch pipe, and the branch pipe speed regulator is positioned between the two-way stop valve and the liquid outlet end of the infusion branch pipe.

Preferably, the infusion branch pipe of the automatic dressing change infusion set with the structure is 2-6 levels.

Further preferably, in the automatic dressing change infusion set with the structure, the infusion main pipe is provided with a liquid medicine filter.

Further preferably, the infusion set with the structure for automatically changing dressings is provided with a main tube speed regulator on the main infusion tube.

Further preferably, in the automatic dressing change infusion set with the structure, an infusion alarm is arranged on the infusion main pipe.

Further preferably, the automatic dressing change infusion set of the structure is provided with an indicator light and a starting switch.

The utility model discloses technical scheme has following advantage:

1. the utility model provides an automatic transfusion system of changing dressings, be responsible for, multistage infusion branch pipe and vein pjncture needle including the infusion, multistage infusion branch pipe sets up the feed liquor end of being responsible for at the infusion, and the setting of vein pjncture needle is responsible for the play liquid end at the infusion. The air inlet of the first-stage infusion branch pipe is provided with a liquid-stopping air inlet valve communicated with the outside, and the liquid-stopping air inlet valves of the air inlets of the rest next-stage infusion branch pipes are communicated with the air outlet of the adjacent previous-stage infusion branch pipe; meanwhile, two-way stop valves are arranged between the liquid outlet ends and the gas outlet ends of all the infusion branch pipes, and the vertical distance between the two-way stop valve on the next-stage infusion branch pipe and the liquid inlet end of the infusion main pipe is smaller than the vertical distance between the two-way stop valve on the adjacent previous-stage infusion branch pipe and the liquid inlet end of the infusion main pipe along the extension direction of the infusion main pipe.

According to the automatic medicine changing infusion set with the structure, the bottle stopper puncture needles of the multi-stage infusion branch pipes are sequentially inserted into the infusion bags which are arranged in sequence, and according to the principle of a communicating vessel, the liquid medicine in the infusion bag at a certain stage can only be input into a patient through the corresponding infusion branch pipe, but can not enter the infusion branch pipe at the upper stage or the infusion branch pipe at the lower stage; after the liquid medicine infusion in this level of infusion bag finishes, automatic switch-over is to next level infusion branch pipe start to carry out the infusion of next level infusion bag, from realizing that a plurality of infusion bags infuse in proper order, need not nurse's manual needle change, alleviateed nurse intensity of labour, and do not have the problem of liquid medicine pollution.

2. The utility model provides an automatic dressing change infusion set, a bidirectional stop valve is arranged on an infusion branch pipe, the bidirectional stop valve comprises a branch pipe drip cup, a floating ball and a sealing part, when a certain-grade infusion bag is adopted for infusion, the infusion of the infusion bag at the upper grade is finished, and no liquid medicine exists; because the liquid level in the infusion bag of the current stage is high relative to the liquid level in the infusion bag of the previous stage, under the pressure of the liquid medicine in the infusion bag of the current stage, the floating ball in the two-way stop valve of the previous stage is closely abutted against the sealing part at the top end of the corresponding branch pipe drip cup to prevent the liquid medicine in the infusion bag of the current stage from flowing back into the infusion bag of the previous stage, and meanwhile, although the liquid level in the infusion bag of the next stage is higher relative to the liquid level in the infusion bag of the current stage, the corresponding liquid stop air inlet valve is in a blocking state, so that the liquid medicine in the infusion bag can not enter the main infusion pipe. The automatic dressing change infusion set with the structure reduces the height of each two-way stop valve in sequence and is matched with the liquid stop air inlet valve to realize automatic dressing change.

3. The utility model provides an automatic transfusion system of changing dressings, sealing portion are for setting up the horn-shaped structure at branch pipe drip kettle both ends, and its two flaring ends set up relatively, and its two throat end settings are at the feed liquor end of branch pipe drip kettle and go out liquid end and feed through in the infusion branch pipe, and the floater of being convenient for removes the feed liquor end in branch pipe drip kettle or goes out the liquid end in order to cooperate with the sealing portion is airtight to the realization is flowed by the liquid medicine.

4. The utility model provides an automatic dressing change infusion set, a main tube speed regulator is arranged on an infusion main tube and is used for controlling the infusion dripping speed, so that the liquid medicine can be gently infused into the body of a patient; meanwhile, a branch pipe speed regulator is arranged on each stage of infusion branch pipe, and once the main pipe speed regulator fails, the branch pipe speed regulator can play a role in controlling the dripping speed, so that the safety is improved.

5. The utility model provides an automatic transfusion system of changing dressings is provided with the liquid medicine filter on the infusion person in charge, can filter insoluble solid medicine or other solid matters that probably hurt human blood vessel in the liquid medicine, can also filter the bubble simultaneously, and patient's infusion safety is protected to the at utmost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an automatic dressing change infusion apparatus provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a liquid medicine filter provided in embodiment 1 of the present invention;

fig. 3 is a schematic view of a cross-sectional structure of a two-way stop valve provided in embodiment 1 of the present invention;

fig. 4 is a schematic view of the arrangement of the vertical distance between each stage of the two-way stop valve and the buffer chamber provided in embodiment 1 of the present invention;

fig. 5 is a schematic view illustrating a setting of controlling a vertical distance between each stage of the bidirectional stop valve and the buffer chamber by the positioning bracket according to embodiment 1 of the present invention;

description of reference numerals:

1-vein puncture needle; 2-a main infusion tube; 21-a buffer chamber; 22-main pipe drip cup; 23-liquid medicine filter; 231-a filter housing; 232-a filter layer; 3-main pipe speed regulator; 4-transfusion alarm; 5-an infusion branch tube set; 5 a-a first-stage infusion branch pipe; 5 b-a second-stage infusion branch pipe; 5 c-a third-stage infusion branch pipe; 51-an air inlet; 52-air outlet; 53-a two-way stop valve; 531-branch drip cup; 532-floating ball; 5321-a convex end; 5322-an eccentric cavity; 533-a seal; 5331-flared end; 5332-a throat end; 6-bottle stopper puncture needle; 7-a breather pipe; 71-liquid stop air inlet valve; 8-branch pipe speed regulator; 9-positioning the bracket.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The embodiment provides an automatic dressing change infusion set, which comprises a vein puncture needle 1, an infusion main pipe 2, a main pipe speed regulator 3, an infusion alarm 4, an infusion branch pipe group 5, a bottle stopper puncture needle 6, a vent pipe 7 and a branch pipe speed regulator 8, as shown in figure 1.

As shown in fig. 1, the intravenous puncture needle 1 is provided at the outlet end of the main infusion tube 2.

As shown in figure 1, a buffer cavity 21, a main pipe drip cup 22 and a liquid medicine filter 23 are sequentially arranged on the main infusion pipe 2 along the flow direction of the liquid medicine, and the buffer cavity 21 is spherical and is arranged at the liquid inlet end of the main infusion pipe 2. As shown in fig. 2, the medical liquid filter 23 includes a filter housing 231 which is fastened, a filter layer 232 is filled in the filter housing 231, the filter layer 232 is made of a polyethersulfone membrane, the polyethersulfone membrane can only allow medical liquid to pass through, and can filter bubbles, insoluble solid drugs or other solid substances which may harm blood vessels of a human body, thereby protecting the safety of a patient to the greatest extent.

As shown in fig. 1, a main pipe speed regulator 3 and an infusion alarm 4 are provided in the infusion main pipe 2 downstream of the chemical filter 23 in the chemical flow direction. The main pipe speed regulator 3 is used for controlling the transfusion speed and leading the medicine liquid to be infused into the body of a patient in a gentle way; the transfusion alarm 4 is made of an HH-SY101 model, a sensor is arranged in the transfusion alarm, a starting switch and an indicating lamp (not shown in the figure) are arranged outside the transfusion alarm, the liquid medicine condition in the transfusion main pipe 2 is monitored in real time through the sensor, and if the liquid medicine in the transfusion main pipe 2 is completely dripped, the indicating lamp flickers to remind patients and medical staff, so that medical accidents are avoided.

As shown in figure 1, an infusion branch pipe group 5 is connected to the buffer cavity 21 and comprises a plurality of infusion branch pipes, and a bottle stopper puncture needle 6 is arranged at the liquid inlet end of each infusion branch pipe and used for inserting different infusion bags. In order to realize the sequential infusion of different infusion bags, the infusion branch pipes in the infusion branch pipe group 5 are arranged in sequence: a first-stage branch infusion pipe 5a, a second-stage branch infusion pipe 5b and a third-stage branch infusion pipe 5c …, as well as an Nth-stage branch infusion pipe 5N; in order to realize the sequential automatic start of the infusion branch pipes of different stages for changing the medicine, the liquid inlet end of each stage of infusion branch pipe is provided with an air inlet 51, the liquid inlet ends and the liquid outlet ends of other infusion branch pipes of each stage except the last stage of infusion branch pipe are provided with air outlets 52, and a bidirectional stop valve 53 for controlling the bidirectional on-off of the medicine liquid is arranged between the air outlet 52 and the liquid outlet end of each stage of infusion branch pipe.

As shown in fig. 3, each two-way shut-off valve 53 includes a branch drip chamber 531, a float ball 532, and a sealing member 533. The floating ball 532 is oblong and comprises an outer convex round end 5321 and an inner eccentric cavity 5322, the convex round ends 5321 are arranged at two ends of the floating ball 532, the eccentric cavity 5322 is eccentrically arranged and is only arranged at one end of the floating ball 532; the sealing member 533 is a horn-shaped structure disposed at two ends of the cavity of the branch drip cup 531, two flared ends 5331 are disposed opposite to each other, and two reduced ends 5332 are disposed at the liquid inlet end and the liquid outlet end of the cavity of the branch drip cup 531 and connected to the infusion branch pipe. In the branch drip cup 531, the eccentric cavity 5322 of the floating ball 532 is disposed toward the liquid inlet end of the branch drip cup 531, and can move up and down along with the liquid level in the cavity of the branch drip cup 531, so that the convex end 5321 is in close fit with the sealing member 533, thereby realizing the bidirectional stop of the liquid medicine.

As shown in fig. 1 and 4, the liquid outlet end of the infusion branch pipe group 5 is uniformly connected to the buffer cavity 21, and along the extending direction of the infusion main pipe 2, the vertical distance between the two-way stop valve 53 corresponding to the next infusion branch pipe and the liquid inlet end of the infusion main pipe 2 (i.e. the buffer cavity 21) is smaller than the vertical distance between the two-way stop valve 53 corresponding to the adjacent previous infusion branch pipe and the liquid inlet end of the infusion main pipe 2 (i.e. the buffer cavity 21). Specifically, a three-stage infusion branch pipe is arranged in this embodiment, a vertical distance H3 between a two-way stop valve 53 corresponding to the third-stage infusion branch pipe 5c and the liquid inlet end (i.e., the buffer cavity 21) of the infusion main pipe 2 is smaller than a vertical distance H2 between a two-way stop valve 53 corresponding to an adjacent second-stage infusion branch pipe 5b and the liquid inlet end (i.e., the buffer cavity 21) of the infusion main pipe 2, and a vertical distance H2 between a two-way stop valve 53 corresponding to a second-stage infusion branch pipe 5b and the liquid inlet end (i.e., the buffer cavity 21) of the infusion main pipe 2 is smaller than a vertical distance H1 between a two-way stop valve 53 corresponding to an adjacent first-stage infusion branch pipe 5a and the liquid inlet end (i.e., the buffer cavity 21) of the infusion main pipe 2.

As shown in fig. 1, an air vent pipe 7 is arranged on an air inlet of each stage of infusion branch pipe to introduce outside air into an infusion bag, so that liquid medicine in the infusion bag enters each stage of infusion branch pipe under the action of gravity; wherein, the vent pipe 7 corresponding to the first-stage infusion branch pipe 5a is directly communicated with the external connection, and the vent pipes 7 corresponding to the other next-stage infusion branch pipes are communicated with the air outlet 52 of the adjacent last-stage infusion branch pipe. In order to prevent the liquid medicine in the infusion bag from flowing in the vent pipe 7, the liquid-stopping air inlet valve 71 is arranged on the vent pipe 7, that is, the liquid-stopping air inlet valve 71 corresponding to the first-stage infusion branch pipe 5a is communicated with the external connector to prevent the liquid medicine in the infusion bag corresponding to the first-stage infusion branch pipe 5a from flowing to the outside, and the liquid-stopping air inlet valves 71 corresponding to the other next-stage infusion branch pipes are communicated with the air outlet 52 of the adjacent previous-stage infusion branch pipe to prevent the liquid medicine in the infusion bag corresponding to the next-stage infusion branch pipe from flowing into the previous-stage.

As shown in fig. 1, a branch pipe speed regulator 8 is arranged on each stage of infusion branch pipe, the branch pipe speed regulator 8 is positioned between the two-way stop valve 53 and the liquid inlet end (namely, the buffer cavity 21) of the infusion main pipe 2, and once the main pipe speed regulator 3 fails, the branch pipe speed regulator 8 can play a role in controlling the dropping speed, thereby improving the safety.

The working principle of the automatic dressing change infusion set with the structure is as follows: a plurality of infusion bags are hung on an infusion support in sequence, bottle stopper puncture needles 6 corresponding to multi-stage infusion branch pipes are inserted into the corresponding infusion bags in sequence, bottle stopper puncture needles 6 corresponding to first-stage infusion branch pipes 5a are inserted into a first infusion bag, bottle stopper puncture needles 6 corresponding to second-stage infusion branch pipes 5b are inserted into … bottle stopper puncture needles 6 corresponding to Nth-stage infusion branch pipes 5N are inserted into an Nth infusion bag, at the moment, vent pipes 7 corresponding to first-stage infusion branch pipes 5a are communicated with the outside, vent pipes 7 corresponding to second-stage infusion branch pipes 5b are communicated with air outlets 52 of the first-stage infusion branch pipes 5a …, vent pipes 7 corresponding to Nth-stage infusion branch pipes 5N are communicated with air outlets 52 of the Nth-1-stage infusion branch pipes 5(N-1), and at the moment, all branch pipe speed regulators 8 are in a full-open state. The main tube speed regulator 3 is slowly opened, outside air enters the first infusion bag through the vent pipe 7 corresponding to the first-stage infusion branch tube 5a, liquid medicine in the first infusion bag enters the two-way stop valve 53 of the first-stage infusion branch tube 5a, the floating ball 532 floats, and the liquid medicine sequentially enters the buffer cavity 21, the main tube drip cup 22 and the liquid medicine filter 23 to be input into a patient, so that first-stage infusion is realized. After the liquid medicine in the first infusion bag is finished, no liquid medicine exists at the air outlet 52 of the first-stage infusion branch pipe 5a, outside air enters the second infusion bag through the vent pipe 7 corresponding to the second-stage infusion branch pipe 5b, so that the liquid medicine in the second infusion bag enters the two-way stop valve 53 of the second-stage infusion branch pipe 5b, the floating ball 532 floats, and the liquid medicine enters the buffer cavity 21 to realize second-stage infusion. At this time, the liquid level in the second infusion bag may be much higher than the liquid level in the first infusion branch tube 5a, and the second infusion bag liquid medicine may enter the two-way stop valve 53 of the first infusion branch tube 5a from the buffer chamber 21, but the liquid medicine may not continuously overflow due to the two-way stop in the two-way stop valve 53 of the first infusion branch tube.

When the liquid medicine in the second infusion bag is infused, the third infusion branch pipe 5c is automatically started, and the working principle is the same as the above.

In consideration of practical clinical application, the automatic infusion apparatus further comprises a positioning bracket 9 which forms a positioning space, as shown in fig. 5, positions the relative positions of the communicating pipe 7 and the branch drip cup 531 of each stage, and prevents the relative positions (the vertical distances of H1, H2 and H3 relative to the buffer cavity 21) of the communicating pipe 7 and the branch drip cup 531 from changing due to the suspension inclination of the infusion branch pipe group 5 in practical application; of course, the automatic dressing change infusion apparatus can be directly hung on an infusion support without using the positioning support 9, and the normal automatic dressing change can also be realized by adjusting the relative height positions of the communicating pipe 7 and the branch pipe drip cup 531.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. An automatic dressing change infusion set is characterized by comprising an infusion main pipe (2), a vein puncture needle (1) arranged at the liquid outlet end of the infusion main pipe (2) and a plurality of stages of infusion branch pipes which are arranged at the liquid inlet end of the infusion main pipe (2) in sequence, wherein a bottle stopper puncture needle (6) and an air inlet (51) are arranged at the liquid inlet end of each stage of the infusion branch pipes, and an air outlet (52) is arranged between the liquid inlet end and the liquid outlet end of the infusion branch pipes at other stages except the last stage of the infusion branch pipes;

the air inlet (51) of each stage of the infusion branch pipe is provided with a liquid stopping air inlet valve (71), wherein the liquid stopping air inlet valve (71) of the infusion branch pipe of the first stage is communicated with the outside, and the liquid stopping air inlet valves (71) of the rest of the infusion branch pipes of the next stage are communicated with the air outlet (52) of the infusion branch pipe of the next previous stage;

every grade be provided with two-way stop valve (53) that are used for controlling the two-way break-make of liquid medicine between infusion branch pipe play liquid end and gas outlet (52), and follow the infusion is responsible for (2) extending direction, the next grade on the infusion branch pipe two-way stop valve (53) with the infusion is responsible for the perpendicular distance between (2) the feed liquor end and is less than adjacent last grade on the infusion branch pipe two-way stop valve (53) with the infusion is responsible for the perpendicular distance between (2) the feed liquor end.

2. The automatic dressing change infusion set according to claim 1, wherein each of the two-way stop valves (53) comprises a branch drip cup (531), a floating ball (532) disposed in a cavity of the branch drip cup (531) to move along with a liquid level, and a sealing member (533) disposed at two ends of the cavity of the branch drip cup (531) and hermetically engaged with the floating ball (532).

3. The automatic changing infusion set according to claim 2, wherein the floating ball (532) is oblong, and both ends thereof are provided with convex round ends (5321) hermetically matched with the sealing member (533);

the sealing element (533) is of a horn-shaped structure, two flared ends (5331) of the sealing element are arranged oppositely, and two necking ends (5332) of the sealing element are respectively arranged at a liquid inlet end and a liquid outlet end of the branch pipe drip cup (531) and are communicated with the infusion branch pipe.

4. The automatic changing infusion set according to claim 3, wherein the floating ball (532) is internally provided with an eccentric cavity (5322) facing the liquid inlet end of the branch pipe drip cup (531).

5. The automatic dressing change infusion set according to claim 4, wherein a branch speed regulator (8) is arranged on each stage of the infusion branch pipe, and the branch speed regulator (8) is positioned between the bidirectional stop valve (53) and the outlet end of the infusion branch pipe.

6. The automatic dressing change infusion set according to any one of claims 1-5, wherein the infusion branch tube is set to 2-6 stages.

7. The automatic changing infusion set according to claim 6, wherein the infusion main pipe (2) is provided with a liquid medicine filter (23).

8. The automatic dressing change infusion set according to claim 7, wherein the infusion main pipe (2) is provided with a main pipe speed regulator (3).

9. The automatic dressing change infusion set according to claim 8, wherein the infusion main tube (2) is provided with an infusion alarm (4).

10. The automatic changing infusion set according to claim 9, wherein the infusion alarm (4) is provided with an indicator lamp (42) and a start switch (41).

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