CN210644728U

CN210644728U - Disposable gravity transfusion system

Info

Publication number: CN210644728U
Application number: CN201920461693.2U
Authority: CN
Inventors: 朱平南
Original assignee: Jiangsu Jichun Medical Devices Co ltd
Current assignee: Jiangsu Jichun Medical Devices Co ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-06-02
Anticipated expiration: 2029-04-04

Abstract

The utility model belongs to the transfusion system field aims at providing a disposable gravity transfusion system, and its technical scheme main points include the bottle of dripping, the transfer line that links to each other with the bottle of dripping, be equipped with the liquid medicine current-limiting subassembly that is used for controlling the liquid medicine velocity of flow in the bottle of dripping, liquid medicine current-limiting subassembly deviates from the puncture ware that is equipped with the tip of running through the bottle of dripping one side of core, with the connecting piece that the core links to each other of dripping, is located the connecting piece including being located the bottle of dripping, and the liquid medicine flows into puncture ware, connecting piece and drips the core in proper order, and in dripping the bottle from the one end that the core deviates from the connecting. The cross section of the drip core can control the amount of the liquid medicine flowing out in unit time because the drip core is used as the only outflow position of the liquid medicine.

Description

Disposable gravity transfusion system

Technical Field

The utility model relates to the field of infusion apparatus, in particular to a disposable gravity infusion apparatus.

Background

The disposable transfusion system is a common medical consumable, establishes a channel between veins and liquid medicine, is used for intravenous transfusion, and generally comprises eight parts, namely an intravenous needle or an injection needle, a needle head protective cap, a transfusion hose, a liquid medicine filter, a flow rate regulator, a dropping bottle, a bottle stopper puncture outfit and an air filter.

At present, after a liquid medicine bottle is connected, liquid medicine flows into a dropping bottle and falls down from the top of the dropping bottle, and the dropping bottle is always kept in a half-full state of the liquid medicine. The amount of the liquid medicine dropping from the top of the dropping bottle is calculated according to the number of drops, and the compression degree of the infusion hose is controlled by the flow rate regulator to control the volume of the liquid medicine which can flow through in unit time.

However, since the flow rate regulator regulates the infusion tube by pressing the roller, the roller may be affected by the flowing liquid medicine, and the position of the roller may be deviated, which may affect the output of the liquid medicine per unit time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a disposable gravity transfusion system, has the advantage that can effectively control the liquid medicine outflow in unit time, be applicable to different patients of each age bracket.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a disposable gravity transfusion system, includes the bottle, the transfer line that links to each other with the bottle that drips, be equipped with the liquid medicine current-limiting subassembly that is used for controlling the liquid medicine velocity of flow in the bottle that drips, liquid medicine current-limiting subassembly deviates from the puncture ware that drips core one side and be equipped with and run through the bottle tip including being located the bottle that drips the core, with the connecting piece that drips the core and link to each other, being located the connecting piece, drip core, connecting piece, puncture ware equal UNICOM, and the puncture ware stretches out the one end and the transfer line inner chamber intercommunication of bottle.

Through adopting above-mentioned technical scheme, when the liquid medicine passes through the liquid medicine current-limiting component of transfer line flow through, flow in puncture ware, connecting piece and drip the core in proper order, follow at last and drip the core and deviate from the one end of connecting piece and drip in the bottle, keep in and drip the bottle bottom. The cross section of the drip core can control the amount of the liquid medicine flowing out in unit time because the drip core is used as the only outflow position of the liquid medicine. If more liquid medicine flows out in unit time, the diameter of the drip core can be made to be slightly larger; if the liquid medicine flowing out in unit time is less, the diameter of the drip core is made to be slightly smaller, so that the drip core is suitable for people with relatively poor physical quality, such as children, old people and the like.

Simultaneously, compare in the conventional direct liquid medicine that flows from the transfer line tip to drip in the bottle, drip the core and be equivalent to and change original liquid medicine flow path through the route, become the taper route from original cylindric route, when playing the guide effect to the liquid medicine, can also utilize the easy pressure variation that produces of taper part to be convenient for impel the smooth and easy flow of liquid medicine.

Further, the dripping core is set to be a pipe body with a constant inner diameter, the diameter of the pipe body is provided with multiple sizes, and the pipe body with any size and the pipe body are coaxially arranged with the dripping bottle.

By adopting the technical scheme, the inner diameter of one dripping core is constant, namely the dripping core is made of metal or hard plastic, which is different from the soft material of a dripping bottle or a transfusion tube, so that the dripping core is not easy to deform due to the flowing of liquid and is more stable than a conventional flow rate regulator.

The dropping core is arranged to be coaxial with the dropping bottle, so that the liquid medicine with high possibility drops at the middle position of the dropping bottle, and the impact force of the falling liquid medicine can be transmitted to the position where the bottom of the dropping bottle is communicated with the infusion tube, so that the liquid medicine can be driven to flow downwards.

The dripping cores with various sizes are convenient for adjusting the flow rate and are suitable for infusion crowds with different constitutions.

Furthermore, the sizes of the drop cores are arranged in a multiple relation, and the amplification factor of the sizes of the drop cores is gradually increased.

By adopting the above technical means, if the difference between the sizes of the drip cores is too small, it is difficult to show the difference in the amount of liquid medicine allowed to pass through per unit time by the drip cores of different sizes. The size magnification of the drip core is gradually increased, that is, the difference between the drip cores with smaller sizes is smaller, and if the difference between the two is larger, it is difficult to accurately control the liquid medicine input amount per unit time that a patient can endure, on the premise that the drip core is originally small.

Furthermore, the difference between the maximum value and the minimum value of the number of the liquid medicine drops flowing through the drop core in unit time is 3-8 times, and at least three optional sizes of the drop core are provided.

By adopting the technical scheme, generally, the product sizes are all integer multiples, the integer between 3 and 8 includes 4, 5, 6 and 7 besides 3 and 8, wherein 4 and 8 are all multiples of the minimum prime number 2, 8 is the third power of 2, the multiple relations are clear, and 6 is also a multiple of 2, so that the available multiple values are more convenient in the range and are convenient to take.

Furthermore, the drip core extends into one end of the drip bottle, the port of the drip core is circular, and the plane where the circle is located is perpendicular to the central axis of the drip bottle.

Through adopting above-mentioned technical scheme, because the hookup location between conventional dropping bottle and the transfer line is also circular terminal surface, consequently will drip the core and also make circular terminal surface, can reduce the variable to one, promptly: only the cross section area through which the liquid medicine passes is convenient for result determination during product testing.

Furthermore, one end of the dripping core, which is close to the connecting piece, is provided with an oblique cut or a flat cut, and the axial length of the part of the dripping core, which extends into the connecting piece, is shorter than the axial length of one end of the puncture outfit, which extends into the infusion tube.

By adopting the technical scheme, the oblique incision can facilitate the introduction of the liquid medicine, and the flat-opening production process is simpler, has advantages and can be adopted.

If the part of the drip core extending into the connector exceeds the puncture outfit, the transfusion tube is easy to be punctured in the process of bending the transfusion tube, and the liquid medicine is easy to be accumulated between the length difference of the drip core and the end part of the puncture outfit.

Furthermore, one end of the drip core extending into the drip bottle is always arranged at a distance from the liquid level of the liquid medicine in the drip bottle.

By adopting the technical scheme, if the end part of the dropping core is immersed below the liquid level of the liquid medicine, the pressure at the end part of the dropping core is changed, and the output of the liquid medicine is easily influenced.

Furthermore, in the liquid medicine current-limiting assembly, a connecting piece and a puncture outfit are integrally arranged, the drip core is connected with the connecting piece in a sealing manner, and the connecting piece is in interference fit with the end part of the drip bottle.

Through adopting above-mentioned technical scheme, the structure of integrative setting is difficult for causing the liquid medicine seepage, and interference fit also hinders the liquid medicine to ooze in order to reduce the clearance between connecting piece and the drip bottle tip.

Furthermore, the liquid medicine flow limiting assembly with any size can be suitable for a standard infusion set.

By adopting the technical scheme, the liquid medicine flow limiting assembly has wide application range, and a manufacturer producing the liquid medicine flow limiting assembly can supply materials for any manufacturer producing standard infusion sets on the market.

Furthermore, the diameter of the corresponding vein needle is larger when the liquid medicine flow limiting assembly with more liquid medicine passes through in unit time, or the vein needles with the same diameter are matched with the liquid medicine flow limiting assemblies with all sizes.

By adopting the technical scheme, the liquid medicine flow limiting assembly with more liquid medicine amount is usually used by tolerant people in unit time, and a venous needle with larger diameter can be used for enabling a patient to infuse as soon as possible; if the intravenous needle with the same diameter is used, the transfusion amount in unit time is controlled by the liquid medicine flow limiting assembly, the condition that the output liquid medicine amount in unit time is small is more suitable, and the intravenous needle is suitable for the crowd who cannot tolerate transfusion.

Drawings

FIG. 1 is a schematic diagram of a configuration for embodying an entire set of infusion sets;

FIG. 2 is a schematic view of the cooperative arrangement of a dropper bottle and a medical fluid restriction assembly;

FIG. 3 is an enlarged view of portion A of FIG. 2 showing the location of the drop core

Fig. 4 is a schematic view of the construction of a drip wick and a connector.

In the figure, 1, a dropping bottle; 2. a transfusion tube; 3. a liquid medicine flow limiting component; 31. dripping the core; 32. a connecting member; 33. a puncture outfit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

A disposable gravity infusion set is shown in figure 1 and comprises a dropping bottle 1 and an infusion tube 2 connected with the dropping bottle 1. The dropper 1 and the infusion tube 2 are made of soft materials, and in the embodiment, PVC or high-performance polyolefin thermoplastic elastomer is used as the material.

As shown in fig. 2 and 3, a liquid medicine flow limiting assembly 3 for controlling the flow rate of liquid medicine is arranged in the dropping bottle 1, the liquid medicine flow limiting assembly 3 comprises a dropping core 31 positioned in the dropping bottle 1, a connecting piece 32 connected with the dropping core 31, and a puncture device 33 which is positioned at one side of the connecting piece 32 departing from the dropping core 31 and runs through the end part of the dropping bottle 1, wherein the dropping core 31 is a pipe body with a constant inner diameter, in order to stabilize the shape of the dropping core 31, the dropping core is made of metal stainless steel or titanium steel or hard plastic, in the embodiment, the titanium steel is used as the material of the dropping core 31.

As shown in fig. 4, the connecting member 32 is a transparent plastic part coated on the dripping core 31, one end of the transparent plastic part is flush with the end of the dripping core 31 and is set to be cylindrical, and the other end of the connecting member 32 is set to be a convex arc surface. As the end part of the commercially available infusion set dropper is provided with the tube body which is convenient for the liquid medicine to flow into the dropper 1, and the diameters of the tube bodies are the same, the connecting piece 32 is also set to be the same size and covers the dropper cores 31 with different sizes. For the convenience of limiting, the connecting piece 32 is set to be a circular arc shape, and the diameter of the cross section of one end of the circular arc shape is larger than that of the cylindrical part, so that the whole connecting piece is in a mushroom shape. The cross section diameter of the circular arc-shaped end of the connecting piece 32 is equal to the outer diameter of the pipe orifice of the liquid outlet at the end part of the drip bottle of the infusion apparatus.

The drip core 31, the connecting piece 32 and the puncture outfit 33 are all communicated, the pipe diameter of the drip core 31 is provided with various sizes, one end of the drip core 31 extends into the drip bottle 1, the other end is embedded in the connecting piece 32 and does not exceed the opening part of the puncture outfit 33 falling into the infusion tube 2. The drip core 31 extends into one end of the drip bottle 1, and the port of the drip core is circular, and the plane of the circle is perpendicular to the central axis of the drip bottle 1. The end of the drip core 31 falling in the connecting piece 32 can be either a flat mouth with a circular cross section or an end of the puncture outfit 33 extending out of the drip bottle 1 and communicated with the inner cavity of the infusion tube 2. And the drip core 31 is arranged coaxially with the drip bottle 1.

The end of the dropping core 31 extending into the dropping bottle 1 is always arranged at a distance from the liquid level of the liquid medicine in the dropping bottle 1, that is, the dropping core 31 cannot be submerged below the liquid level of the liquid medicine, in the embodiment, the length of the dropping core 31 in the dropping bottle 1 is less than 1/8 of the axial length of the dropping bottle 1, and the length of the actually adopted dropping core 31 is 1/10 of the axial length of the dropping bottle 1.

The drip core 31 of any size can be suitable for the transfusion device produced by the national standard on the market, and the liquid medicine flow limiting component 3 of any size can be suitable for the standard transfusion device.

As shown in fig. 2, in order to be adapted to an infusion set, the connecting member 32 is configured as a cylindrical plug, the dropper 1 is configured as a cylindrical container with one open end, the connecting member 32 is plugged into the open position of the dropper 1, the dropper 1 and the connecting member 32 are connected in a sealing manner by hot melting, interference fit or gluing, and the end of the connecting member 32 away from the dropper 1 is the puncture device 33. In the liquid medicine flow-limiting component 3 of this embodiment, the connecting member 32 and the puncture device 33 are integrally disposed, the drip core 31 and the connecting member 32 are hermetically connected by gluing, and the connecting member 32 is in interference fit with the end of the drip bottle 1.

The size of the drop core 31 is set in a multiple relation, and the magnification of the size of the drop core 31 is gradually increased. The difference between the maximum value and the minimum value of the number of the liquid medicine drops flowing through the drop core 31 in unit time is 3-8 times, and at least three optional sizes of the drop core 31 are provided. In this embodiment, the sizes of the drip core 31 are set to three, and the liquid medicine flowing out of each size of the drip core 31 per unit time is 10 drops/min, 20 drops/min, and 60 drops/min, respectively, in terms of the number of drops. The multiples of every two are 2 times and 3 times respectively, and the difference between the amount of the liquid medicine allowed to pass through the minimum-size drip core 31 and the maximum-size drip core 31 in unit time is 6 times.

The more the liquid medicine flow limiting component 3 passes through the liquid medicine in unit time, the larger the diameter of the corresponding vein needle is, for example, a dripping core 31 capable of flowing out 60 drops of liquid medicine in one minute is matched with a No. 7 vein needle on the market for use, and a dripping core 31 capable of flowing out 10 drops of liquid medicine in one minute is matched with a No. 4.5 vein needle on the market for use; or all sizes of the liquid medicine flow limiting assemblies 3 are matched with intravenous needles with the same diameter.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a disposable gravity transfusion system, includes dropping bottle (1), transfer line (2) that link to each other with dropping bottle (1), its characterized in that: be equipped with liquid medicine current-limiting component (3) that are used for controlling the liquid medicine velocity of flow in dropping bottle (1), liquid medicine current-limiting component (3) deviates from dropping core (31) one side and is equipped with puncture ware (33) that run through dropping bottle (1) tip including dropping core (31) that is located dropping bottle (1), with dropping connecting piece (32) that core (31) link to each other, being located connecting piece (32), dropping core (31), connecting piece (32), puncture ware (33) equal UNICOM, and puncture ware (33) stretch out the one end and transfer line (2) inner chamber intercommunication of dropping bottle (1).

2. The single use gravity infusion set according to claim 1, wherein: the dripping core (31) is set to be a pipe body with a constant inner diameter, the diameter of the pipe body is provided with multiple sizes, and the pipe body with any size and the pipe body are coaxially arranged with the dripping bottle (1).

3. The single use gravity infusion set according to claim 2, wherein: the sizes of the drop cores (31) are arranged in a multiple relation, and the magnification of the sizes of the drop cores (31) is gradually increased.

4. The single use gravity infusion set according to claim 3, wherein: the difference between the maximum value and the minimum value of the number of the liquid medicine drops flowing through the drop core (31) in unit time is 3-8 times, and at least three optional sizes of the drop core (31) are provided.

5. The single use gravity infusion set according to claim 1, wherein: the drip core (31) extends into one end of the drip bottle (1), the port of the drip core is circular, and the plane where the circle is located is perpendicular to the central axis of the drip bottle (1).

6. The single use gravity infusion set according to claim 5, wherein: one end of the drip core (31) close to the connecting piece (32) is provided with an oblique cut or a flat cut, and the axial length of the part of the drip core (31) extending into the connecting piece (32) is shorter than the axial length of one end of the puncture outfit (33) extending into the infusion tube (2).

7. The single use gravity infusion set according to claim 1, wherein: the end of the dropping core (31) extending into the dropping bottle (1) is always spaced from the liquid level of the liquid medicine in the dropping bottle (1).

8. The single use gravity infusion set according to claim 1, wherein: in the liquid medicine flow limiting assembly (3), a connecting piece (32) and a puncture outfit (33) are integrally arranged, a dripping core (31) is connected with the connecting piece (32) in a sealing way, and the connecting piece (32) is in interference fit with the end part of a dripping bottle (1).

9. The single use gravity infusion set according to claim 1, wherein: the liquid medicine flow limiting component (3) with any size can be suitable for a standard infusion set.

10. The single use gravity infusion set according to claim 9, wherein: the more the liquid medicine flow limiting assemblies (3) pass through the liquid medicine in unit time, the larger the diameter of the corresponding vein needle is, or the vein needles with the same diameter are matched with the liquid medicine flow limiting assemblies (3) with all sizes.