CN204637149U - Disposable transfusion device - Google Patents

Abstract

The utility model provides a disposable infusion device, which belongs to the field of medical equipment, and comprises a transfusion tube body, a side pipe is connected to the side of the infusion tube body, and the end of the side tube connected to the infusion tube body is a connecting end, which is connected with the infusion tube body. The other end opposite to the connecting end is a free end, and the outside of the free end is covered with a heparin cap; the heparin cap is a columnar structure, one end of which is provided with a blind hole, and the inner diameter of the blind hole matches the outer diameter of the free end of the side tube, A heparin cap is sleeved on the outside of the free end of the side tube through a blind hole. This disposable infusion set can effectively improve the utilization rate of the infusion set and reduce medical costs; it can heat the drug solution, prevent blood backflow, and can be used for intravenous injection, which can reduce the entry of air bubbles and air into the venous blood vessels, and improve the infusion effect. Reduce medical risk.

Description

Disposable infusion set

technical field

The utility model relates to the field of medical equipment, in particular to a disposable infusion set.

Background technique

In clinical nursing work, intravenous infusion is the most common nursing technical operation, and disposable infusion sets are widely used. With the development of population and the improvement of medical conditions, the demand for disposable infusion sets is increasing, but the production and manufacturing of infusion sets cannot keep up with the demand, and labor costs are also increasing year by year, resulting in the cost of disposable infusion sets. The higher the increase, the higher the cost of medical care, and the cost of medical care will be further reflected in medical expenses, which will further increase the cost of seeing a doctor, resulting in an increase in the cost of seeing a doctor, making it more difficult to see a doctor, making some people look down on or don’t want to see a doctor, and further intensify social pressure. Contradictions are not conducive to the construction of harmonious socialism; in addition, the replacement of existing disposable infusion sets is also more troublesome, which affects the speed of medical treatment in some emergency situations and further increases the probability of medical accidents.

Utility model content

The utility model provides a disposable infusion set, aiming at improving the above problems.

The utility model is achieved in that:

A disposable infusion set, comprising an infusion tube body, a side tube connected to the side of the infusion tube body, one end of the side tube connected to the infusion tube body is a connecting end, and the other end opposite to the connecting end is a free end, A heparin cap is sheathed on the outside of the free end; the heparin cap is a columnar structure, and a blind hole is opened at one end, the inner diameter of the blind hole matches the outer diameter of the free end of the side tube, and the heparin cap is sleeved on the side tube through the blind hole outside of the free end.

During the infusion process of this disposable infusion set, when it is necessary to add other non-incompatible drugs into the liquid medicine, the liquid medicine is sucked into the syringe, the needle of the syringe is pierced through the heparin cap into the side tube, and the syringe can be pushed The liquid medicine is injected into the body of the infusion tube, and the heparin cap prevents air from entering after the needle is pulled out. The use of the disposable infusion set can improve the utilization rate of the infusion set, reduce medical costs, avoid air entering during intravenous injection, avoid pollution when taking and connecting skin needles, and reduce disputes between nurses and patients.

Further, when the infusion tube body is in use, the free end of the side tube is located above its connecting end. This design method can prevent the liquid medicine from entering the side pipe when the infusion tube body is in use.

Further, the included angle between the infusion tube body and the side tube is 15°-25°. The infusion tube body and the side pipe at this angle are convenient to manufacture, transport and use, and can prevent the liquid medicine from entering the side pipe during use, and also enable other liquid medicines to be injected conveniently.

Further, a heater is also included. When the infusion tube body is in use, the heater is used to heat the medicinal liquid in the infusion tube body; the heater includes a heating part and a connecting part for connecting the infusion tube body. When in use, the medicinal liquid can be heated by the heater to increase the temperature of the medicinal liquid, so that the temperature of the medicinal liquid entering the blood of the human body will not be too low, so that the infusion process can be carried out smoothly and the infusion effect can be improved.

Further, the heater is cylindrical, and the connection part is a through hole penetrating the heater, and the inner diameter of the through hole matches the outer diameter of the infusion tube body; an opening is provided on the side of the heater, and the opening is used to make the infusion The tube body enters and leaves the through hole, and the width of the opening is smaller than the outer diameter of the infusion tube body. Squeeze the body of the infusion tube to enter the through hole from the opening, complete the connection between the heater and the body of the infusion tube, and fix it on the body of the infusion tube; make the inner diameter of the through hole slightly smaller than the outer diameter of the infusion tube body, The two can be connected more closely.

Further, the heater is a hollow structure, including an end, an outer portion and an inner portion, the outer portion or the end is provided with an opening, and the opening is provided with an end cover detachably connected thereto. The hollow inner structure of the heater constitutes the heating part of the heater. When in use, open the end cover and add hot water from the opening. Through the heat transfer, the hot water can heat the liquid medicine flowing in the infusion tube body to achieve Heating purpose.

Further, the outer side and the end of the heater are provided with a heat insulating layer. The setting of the heat insulation layer can prevent the heat from dissipating from the outer side and the end of the heater, so that the heat can be dissipated from the inner side of the heater to the greatest extent, thereby achieving a better effect of heating the liquid medicine. The inner part is the part where the heater contacts the body of the infusion tube, that is, the inner wall of the through hole.

Further, the heater is made of flexible material. The body of the infusion tube is made of flexible material, so the heater made of flexible material can be better fitted to the body of the infusion tube to achieve a better heating effect.

Further, the heater also includes a clamp connected thereto, and the clamp is used to fix the heater to the user's finger. During infusion, the patient clamps the clamp on his finger, which can play a role in fixing the body of the infusion tube so that it will not shake. It can prevent medical accidents such as running needles and returning blood.

Further, the infusion tube body includes an upper infusion tube, a drip pot, a lower infusion tube, a flow regulator and a scalp needle from top to bottom; a magnetic buoy with a T-shaped longitudinal section is arranged in the drip pot, and the magnetic buoy includes a round Shaped floating part and a columnar magnetic part vertically connected to one side of the floating part, a magnetic collar is provided at the end where the drip pot is connected to the lower infusion tube, and the inner diameter of the magnetic collar matches the outer diameter of the magnetic part;

When there is no liquid medicine in the drip pot, the magnetic part of the magnetic buoy is inserted into the magnetic collar by the magnetic force;

When the medicinal liquid is dripped into the dripping pot, the floating part of the magnetic buoy floats up due to the buoyancy of the liquid and drives the magnetic part to separate from the magnetic collar.

When in use, when the medicinal liquid in the hanging bottle is about to be finished, as the medicinal liquid in the dripping pot decreases, the liquid level gradually decreases, and the magnetic buoy also gradually decreases. After the magnetic part of the magnetic buoy contacts the magnetic collar, it is Affecting the two are sucked together, and after the sucking, it plays a sealing role, the medicine liquid no longer flows, and the blood also does not flow, which can effectively prevent the backflow of blood.

The beneficial effects of the utility model are: the disposable infusion set obtained by the above design of the utility model can effectively improve the utilization rate of the infusion set and reduce medical costs; it can heat the drug solution, prevent blood backflow, and can be used for intravenous injection , can reduce air bubbles and air entering the veins, improve the effect of infusion, and reduce medical risks.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic structural diagram of the connection between the infusion tube body and the side tube in the disposable infusion set provided by the embodiment of the present invention;

Fig. 2 is a top view of the heater in the disposable infusion set provided by the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of the connection between the body of the infusion tube and the heater in the disposable infusion set provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the disposable infusion set provided by the embodiment of the present invention when the liquid medicine is contained;

Fig. 5 is a schematic structural view of the disposable infusion set provided by the embodiment of the present invention when no medicinal liquid is contained;

Fig. 6 is a schematic structural view of the drip pot in the disposable infusion set provided by the embodiment of the present invention.

The marks in the figure are:

Infusion tube body 101; side tube 102; heparin cap 103; heater 104; heating part 105; through hole 106; opening 107; opening 108; end cap 109; Pot 113 ; lower infusion tube 114 ; flow regulator 115 ; scalp needle 116 ; magnetic float 117 ; floating part 118 ; magnetic part 119 ; magnetic collar 120 ; filter 121 .

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments described above are some of the embodiments of the present utility model, but not all of them. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred equipment or elements must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

See Figures 1-6

The disposable infusion set provided in this embodiment includes an infusion tube body 101, a side tube 102 is connected to the side of the infusion tube body 101, and the end of the side tube 102 connected to the infusion tube body 101 is a connecting end, and the connecting end The opposite end is a free end, and the outside of the free end is covered with a heparin cap 103; the heparin cap 103 is a columnar structure, and a blind hole is opened at one end, and the inner diameter of the blind hole matches the outer diameter of the free end of the side tube 102 , the heparin cap 103 is sleeved on the outside of the free end of the side tube 102 through a blind hole.

During the infusion process of this disposable infusion set, when it is necessary to add other non-incompatible drugs to the liquid medicine, the liquid medicine is sucked into the syringe, the needle of the syringe is pierced through the heparin cap 103 into the side tube 102, and the The syringe can inject medicinal liquid into the infusion tube body 101, and the heparin cap 103 can prevent air from entering after the needle is pulled out. The use of the disposable infusion set can improve the utilization rate of the infusion set, reduce medical costs, avoid air entering during intravenous injection, avoid pollution when taking and connecting skin needles 116, and reduce disputes between nurses and patients.

In some specific embodiments, when the infusion tube body 101 is infusion, the free end of the side tube 102 is located above the connecting end. This design can prevent the liquid medicine from entering the side tube 102 when the infusion tube body 101 is in use.

Furthermore, the included angle between the infusion tube body 101 and the side tube 102 is 15°-25°. The infusion tube body 101 and the side tube 102 at this angle are convenient to manufacture, transport and use, and can prevent the liquid medicine from entering the side tube 102 during use, and also allow other liquid medicines to be injected conveniently.

When the weather is colder, the temperature of the liquid medicine is also low. Directly injecting the cold liquid medicine into the blood will cause discomfort to the patient and easily lead to other diseases. Therefore, most hospitals will use the external tube for infusion. Cover the hot water bag to heat the liquid medicine, so that the temperature of the liquid medicine entering the patient's body will not be too low, making it easier for the patient to adapt and making the infusion process easier.

This method requires the hospital to configure many hot water bags, which increases medical costs, and the management of hot water bags also increases management costs; cheap hot water bags are in danger of explosion, and hot water bags with better quality are not cheap; there are also many problems in the use process, so this method The method is inconvenient for large-scale promotion and application.

For this reason, in some specific embodiments, the disposable infusion set also includes a heater 104, and the heater 104 is used to heat the medicinal liquid in the infusion tube body 101 when the infusion tube body 101 is in use; the heater 104 includes a heating part 105 and the connection part for connecting the infusion tube body 101.

This disposable infusion set has its own heater 104. When in use, the medicinal liquid can be heated by the heater 104 to increase the temperature of the medicinal liquid so that the temperature of the medicinal liquid entering the blood of the human body will not be too low, so that the infusion process can be carried out smoothly. Improve the infusion effect.

In some specific embodiments, the structure of the heater 104 is as follows: the heater 104 is cylindrical, and the connection part is a through hole 106 passing through the heater 104 along its axis, and the inner diameter of the through hole 106 is the same as that of the infusion tube body. The outer diameter of 101 matches; the side of the heater 104 is provided with an opening 107 for allowing the infusion tube body 101 to enter and exit the through hole 106, and the width of the opening 107 is smaller than the outer diameter of the infusion tube body 101.

During use, squeeze the infusion tube body 101 to make it enter the through hole 106 from the opening 107, complete the connection of the heater 104 and the infusion tube body 101, and make it fixed on the infusion tube body 101; make the inner diameter of the through hole 106 Slightly smaller than the outer diameter of the infusion tube body 101, the two can be connected more closely.

Further, the heater 104 is a hollow structure, including an end, an outer portion and an inner portion, and the end, the outer portion, and an inner portion enclose the hollow structure of the heater 104, and the outer portion or the end is provided with an opening 108, which is opened. The hole 108 is provided with an end cap 109 detachably connected thereto.

The hollow inner structure of the heater 104 constitutes the heating part 105 of the heater 104. When in use, open the end cover 109 and add hot water from the opening 108. Through the transfer of heat, the hot water can flow into the infusion tube body 101. The liquid medicine is heated to achieve the purpose of heating.

Further, the outer side and the end of the heater 104 are provided with a heat insulating layer 110 . The setting of the heat insulating layer 110 can prevent the heat from dissipating from the outer part and the end of the heater 104, and make the heat dissipate from the inner part to the maximum extent, so as to achieve a better effect of heating the liquid medicine. The inner part is the part where the heater 104 is in contact with the infusion tube body 101 , that is, the hole wall of the through hole 106 .

Preferably, the heater 104 is made of flexible material. The infusion tube body 101 is made of flexible material, so the heater 104 made of flexible material can fit better with the infusion tube body 101 to achieve a better heating effect.

Further, the heater 104 also includes a clamp 111 connected thereto, and the clamp 111 is used to fix the heater 104 to the user's finger. During infusion, the patient clamps the clamp 111 on his finger, which can play a role in fixing the infusion tube body 101 so that it will not shake. It can prevent medical accidents such as running needles and returning blood.

The specific structure of the clamp 111 is comparatively existing. As shown in FIG. 2, in some specific embodiments, the clamp 111 is cylindrical and made of elastic material. Due to the elastic force of the material, the clamp 111 can be firmly clamped on the patient's finger, so that the heater 104 is fixed, and then the infusion tube body 101 is fixed without shaking.

Basically everyone has the experience of infusion. When the medicine in the bottle is about to be infused, if the needle is not pulled out in time, the pressure in the infusion set will drop rapidly, from greater than the pressure in the blood of the human body to less than the pressure in the blood of the human body. Pressure, which causes blood to flow back into the infusion set. Although this situation is not very critical, it will also cause a waste of blood in the patient's body, aggravate the condition, and cause delays in the condition.

For this reason, in some specific embodiments, it also includes a device for preventing blood backflow, which is specifically realized in this way: the infusion tube body 101 sequentially includes an upper infusion tube 112, a drip pot 113, a lower infusion tube 114, and a flow regulator from top to bottom. Device 115 and scalp needle 116; Drip pot 113 is provided with longitudinal section as T-shaped magnetic buoy 117, magnetic buoy 117 includes circular floating part 118 and columnar magnetic part 119 vertically connected to one side of floating part 118, One end of the drip pot 113 connected to the lower infusion tube 114 is provided with a magnetic collar 120, and the inner diameter of the magnetic collar 120 matches the outer diameter of the magnetic part 119; Inserted in the magnetic collar 120 under the action of the magnetic force; when the medicine liquid is dripped into the dripping pot 113, the floating part 118 of the magnetic buoy 117 floats up due to the buoyancy of the liquid and drives the magnetic part 119 to separate from the magnetic collar 120.

The side tube 102 can be arranged on the upper infusion tube 112 or the lower infusion tube 114, without affecting its use. In the accompanying drawings, the side tube 102 is arranged on the lower infusion tube 114 .

The dripping pot 113 is the dripping pot of Mufei, also called Murphy's dropper, or Murphy's dripping bucket, which is an existing device.

When the disposable infusion set with a device for preventing blood backflow is in use, when the liquid medicine in the hanging bottle is about to be transfused, along with the decrease of the liquid medicine in the drip pot 113, the liquid level gradually decreases, and the magnetic buoy 117 also gradually descends. After the magnetic part 119 of the magnetic buoy 117 is in contact with the magnetic collar 120, the two are attracted together by the influence of the magnetic force, and play a sealing role after the attraction. reflow.

Further, a filter 121 is also included, and the filter 121 can prevent impurities such as glass slag from entering the blood, which is an existing device. The side pipe 102 is arranged above the filter 121 , so that the filter 121 can filter out the medicinal liquid injected from the side pipe 102 .

In order to clearly illustrate the utility model, a specific example is listed in this embodiment mode:

A disposable infusion set, comprising an infusion tube body 101, a side tube 102 is connected to the side of the infusion tube body 101, the end of the side tube 102 connected to the infusion tube body 101 is a connecting end, and the other end opposite to the connecting end is The free end is provided with a heparin cap 103 on the outside of the free end; the heparin cap 103 is a columnar structure, and a blind hole is opened at one end, the inner diameter of the blind hole matches the outer diameter of the free end of the side tube 102, and the heparin cap 103 is sleeved through the blind hole Outside the free end of the side tube 102, when the infusion tube body 101 is in use, the free end of the side tube 102 is located above its connection end, and the angle between the infusion tube body 101 and the side tube 102 is 15°-25°.

When the disposable infusion set is used, the utilization rate of the infusion set can be effectively improved, and the medical cost can be reduced.

This implementation mode also provides another embodiment:

A disposable infusion set, comprising an infusion tube body 101, a side tube 102 is connected to the side of the infusion tube body 101, the end of the side tube 102 connected to the infusion tube body 101 is a connecting end, and the other end opposite to the connecting end is Free end, the outside of the free end is covered with a heparin cap 103; the heparin cap 103 is a columnar structure, one end of which is provided with a blind hole, the inner diameter of the blind hole matches the outer diameter of the free end of the side tube 102, and the heparin cap 103 is sleeved through the blind hole Outside the free end of the side tube 102, when the infusion tube body 101 is in use, the free end of the side tube 102 is located above its connection end, and the angle between the infusion tube body 101 and the side tube 102 is 15°-25°.

The infusion tube body 101 also includes a heater 104, and the heater 104 includes a heating portion 105 and a connecting portion for connecting the infusion tube body 101; the heater 104 is cylindrical, and the connecting portion is a through hole 106 that runs through the heater 104, and the through hole The inner diameter of 106 matches the outer diameter of the infusion tube body 101; the side of the heater 104 is provided with an opening 107, and the opening 107 is used to allow the infusion tube body 101 to enter and exit the through hole 106, and the width of the opening 107 is smaller than the outer diameter of the infusion tube body 101 The heater 104 is a hollow structure, including an end, an outer portion and an inner portion, and the outer portion or the end is provided with an opening 108, and the opening 108 is provided with an end cover 109 detachably connected thereto. The outer portion and the end portion of the heater 104 are provided with a heat insulating layer 110 . The heater 104 is made of flexible material. It also includes a clamp 111 connected with it, and the clamp 111 is used to fix the heater 104 on the user's finger, and the clamp 111 is cylindrical made of elastic material.

The infusion tube body 101 includes an upper infusion tube 112, a drip pot 113, a lower infusion tube 114, a flow regulator 115, and a scalp needle 116 from top to bottom; The buoy 117 includes a circular floating portion 118 and a columnar magnetic portion 119 vertically connected to one side of the floating portion 118. The end where the dripping pot 113 is connected to the lower infusion tube 114 is provided with a magnetic collar 120. The inner diameter of the magnetic collar 120 is Match the outer diameter of the magnetic part 119; when there is no liquid medicine in the drip pot 113, the magnetic part 119 of the magnetic buoy 117 is inserted into the magnetic collar 120 by magnetic force; when the liquid medicine is dripped into the drip pot 113, the magnetic The floating part 118 of the buoy 117 floats up under the buoyancy of the liquid and drives the magnetic part 119 to separate from the magnetic collar 120 .

The disposable infusion device obtained through the above design can effectively improve the utilization rate of the infusion device and reduce medical costs; it can heat the drug solution, prevent blood backflow, and can be used for intravenous injection, which can reduce air bubbles and air from entering the venous blood vessels, and improve Infusion effect, reduce medical risk.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a disposable transfusion device, is characterized in that, comprises tube for transfusion body, the sidepiece of this tube for transfusion body is connected with side pipe, one end that side pipe is connected with tube for transfusion body is link, and the other end relative with described link is free end, and the outer cover of free end is provided with calparine cap; Described calparine cap is column structure, and its one end offers blind hole, and the internal diameter of described blind hole mates with the external diameter of the free end of side pipe, and calparine cap is set in the outside of the free end of side pipe by blind hole.

2. disposable transfusion device according to claim 1, is characterized in that, when tube for transfusion body in use, the free end of side pipe is positioned at the top of its link.

3. disposable transfusion device according to claim 2, is characterized in that, the angle between tube for transfusion body and side pipe is 15 °-25 °.

4. disposable transfusion device according to claim 1, is characterized in that, also comprises heater, when tube for transfusion body in use heater be used for the medicinal liquid in heating transfusion tube body; Heater comprises heating part and the connecting portion for connecting tube for transfusion body.

5. disposable transfusion device according to claim 4, is characterized in that, described heater is cylindrical, and described connecting portion is the through hole running through heater, and the internal diameter of through hole mates with the external diameter of tube for transfusion body; The sidepiece of heater is provided with opening, and opening is used for making tube for transfusion body pass in and out described through hole, and the width of opening is less than the external diameter of tube for transfusion body.

6. disposable transfusion device according to claim 5, is characterized in that, described heater is hollow structure, comprises end, lateral part and medial part, and its lateral part or end are provided with perforate, and perforate is provided with the end cap removably connected with it.

7. disposable transfusion device according to claim 6, is characterized in that, lateral part and the end of described heater are equipped with thermal insulation layer.

8. the disposable transfusion device according to any one of claim 4-7, is characterized in that, described heater flexible material is made.

9. disposable transfusion device according to claim 8, is characterized in that, described heater also comprises coupled fixture, and fixture is for being fixed to the finger of user by heater.

10. the disposable transfusion device according to any one of claim 1-7, is characterized in that, described tube for transfusion body comprises upper tubing from top to bottom successively, drips kettle, lower tube for transfusion, flow regulator and scalp acupuncture; Drip in kettle that to be provided with longitudinal section be T-shaped magnet buoy, magnet buoy comprises circular floating portion and is vertically connected on the magnetic portion of column of side in floating portion, drip one end of being connected with lower tube for transfusion of kettle and be provided with the magnetic collar, the internal diameter of the magnetic collar mates with the external diameter of magnetic portion;

When not having medicinal liquid in a kettle, the magnetic portion of magnet buoy is plugged in the magnetic collar by magneticaction;

After instilling medicinal liquid in a kettle, the buoyancy of the floating portion liquid body of magnet buoy is floated and is driven magnetic portion to be separated with the magnetic collar.