CN107875015B

CN107875015B - Infusion bag accessory and infusion device

Info

Publication number: CN107875015B
Application number: CN201711091887.XA
Authority: CN
Inventors: 赵立品; 何伟成; 马百钧; 何汀; 罗李; 向章; 何柯; 李晓燕; 周静
Original assignee: CHONGZHOU JUNJIAN PLASTIC CO LTD
Current assignee: CHONGZHOU JUNJIAN PLASTIC CO LTD
Priority date: 2017-11-08
Filing date: 2017-11-08
Publication date: 2020-10-09
Anticipated expiration: 2037-11-08
Also published as: CN107875015A

Abstract

The invention relates to the field of disposable medical infusion, in particular to an infusion bag accessory and an infusion device. The infusion bag accessory comprises a cover body, a sealing piece used for sealing the cover body, an infusion tube used for transporting liquid and a connecting assembly used for realizing connection of the infusion bag. The sealing member is arranged in the cover body and connected with the cover body, an outflow port for liquid to flow out is arranged on the sealing member, and two ends of the infusion tube are respectively connected with the sealing member and the connecting assembly. The safety device is simple in structure, convenient to use, easy to manufacture and high in safety.

Description

Infusion bag accessory and infusion device

Technical Field

The invention relates to the field of disposable medical infusion, in particular to an infusion bag accessory and an infusion device.

Background

The accessories for the infusion bag commonly used in the market at present are punctured by an infusion needle when in use, so that the liquid medicine in the bag enters the infusion apparatus for use. The main disadvantage is that the method of using the infusion needle to puncture and introduce the liquid medicine may introduce the fragments dropped from the inner cover or the gasket into the infusion bag during the puncturing process, which increases the risk of medication.

Simultaneously, the accessory for the infusion bag that currently generally uses is fixed in the needle body puncture for the convenience, and pipeline closing device all is provided with the gasket generally, because the gasket sets up the position of sealing at the pipeline through circumference extruded mode, appears becoming flexible easily. Particularly, in the process of infusion, because the infusion needle body is directly fixed on the gasket, the needle body can shake along with the movement of a human body, so that the gasket is easy to loosen, and the condition of liquid leakage is easily caused.

Thirdly, hospital nurse punctures with the transfusion needle at the traditional accessory for infusion bag in the use market, and the puncture in-process can puncture gasket and the inner cup that is used for sealed and fixed transfusion system for the phenomenon of difficult puncture can appear in the in-process of puncture, and it is extremely inconvenient to use.

Disclosure of Invention

The invention aims to provide an infusion bag accessory which is simple in structure, convenient to use, easy to manufacture and high in safety.

Another object of the present invention is to provide an infusion device, which is simple to operate, is not easy to drop debris, and can ensure safety of medication.

The embodiment of the invention is realized by the following steps:

the utility model provides an infusion bag accessory, includes the lid, is used for the sealing member of sealed lid, transports the transfer line of liquid and realizes the coupling assembling that infusion bag connects, and the sealing member sets up in the lid and is connected with the lid, is provided with the egress opening that is used for the liquid outflow on the sealing member, and the both ends of transfer line are connected with sealing member and coupling assembling respectively.

In a preferred embodiment of the present invention, the cover comprises an upper cover and a lower cover, the upper cover and the lower cover are welded together, the outflow port is disposed at the welding position of the upper cover and the lower cover, the sealing member is movably connected to the upper cover, and the lower cover is connected to one end of the infusion tube.

In a preferred embodiment of the present invention, the upper cover body includes a cover opening part, a circular truncated cone part and a first connecting part connected to the lower cover body, which are sequentially connected, and the cover opening part, the circular truncated cone part and the first connecting part are uniformly and movably connected to the sealing part.

In a preferred embodiment of the present invention, a protrusion assembly is disposed on an inner surface of the circular truncated cone, and the protrusion assembly is movably connected to the sealing member.

In a preferred embodiment of the invention, the sealing element comprises a soft plug element for sealing the opening of the cover body and an inner plug element for sealing the inside of the cover body, the soft plug element and the inner plug element are both connected with the cover body, and one end of the soft plug element is connected with the inner plug element.

In a preferred embodiment of the invention, the outer surface of the inner plug on the side opposite to the soft plug is provided with a concave component, and the concave component is connected with the cover body.

In a preferred embodiment of the present invention, the connecting assembly includes a second connecting member, and the second connecting member is sleeved on an end of the infusion tube relatively far from the cover and connected to the infusion tube.

In a preferred embodiment of the present invention, the cross section of the second connecting member is shuttle-like.

In a preferred embodiment of the present invention, two opposite ends of the second connecting member are provided with tail wings, and the tail wings are connected with the second connecting member.

An infusion set, includes above-mentioned infusion bag accessory.

The infusion bag accessory and the infusion device provided by the embodiment of the invention have the beneficial effects that: the parts of the infusion bag are sealed by the easily-torn film, so that the infusion bag is easy to open and convenient to use. The infusion mode breaks through the traditional puncture mode and adopts a novel structure to carry out infusion, the falling scraps in the puncture process of the infusion needle are avoided, and the safety of medication can be greatly improved. Meanwhile, the risk that the infusion apparatus falls off due to the fact that the infusion apparatus is fixed through puncture in the prior art is avoided, and the infusion bag accessory can further avoid the phenomenon that the contact area of the infusion apparatus and the gasket is loosened due to shaking of the infusion apparatus after puncture in the prior art. Meanwhile, the sealing element is formed by injection molding, the preparation process is simple, and the product precision is high. The infusion accessory has the advantages of no deformation, no discoloration, high strength and high safety in the sterilization treatment process at 121 ℃.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of an infusion bag accessory according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a connection of a male component and a female component provided in accordance with a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a dust cap according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a connecting assembly according to a third embodiment of the present invention.

Icon: 100-parts of an infusion bag; 103-an outflow opening; 200-a cover body; 300-a seal; 400-an infusion tube; 500-a connecting assembly; 210-an upper cover; 220-a lower cover body; 213-a mouthpiece; 215-a circular truncated cone; 217-first connecting member; 219-easy-tear film; 230-a bump component; 232-a first projection; 234 — a second projection; 310-a soft plug; 320-an inner plug; 330-a recessed element; 332-a first recessed member; 334-a second concave element; 510-a second connector; 513-empennage; 515-depressed lattice; 520-dust cover; 521-external threads; 523-internal thread; 530-a first interface member; 540-a second interface; 542-internal threads; 531-external thread.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1, the present invention provides an infusion bag accessory 100, which includes a cover 200, a sealing member 300 for sealing the cover 200, an infusion tube 400 for transporting liquid, and a connection assembly 500 for connecting an infusion bag, wherein the sealing member 300 is disposed in the cover 200 and connected to the cover 200, the sealing member 300 is provided with an outlet 103 for liquid to flow out, and two ends of the infusion tube 400 are respectively connected to the sealing member 300 and the connection assembly 500.

The cover 200 is used to ensure that liquid flows through and that no contamination will contaminate the liquid flowing through the cover 200. Since the infusion bag attachment 100 is a disposable device, the cap 200 is made of medical plastic, but the cap 200 is hard and hardly deformed. The cap body 200 has a hollow structure to facilitate connection with the sealing member 300.

The cover 200 includes an upper cover 210 and a lower cover 220, the upper cover 210 and the lower cover 220 are welded, the sealing member 300 is disposed in the upper cover 210 and the lower cover 220 and connected to the upper cover 210 and the lower cover 220, the upper cover 210 is movably connected to the sealing member 300, and the lower cover 220 is connected to one end of the infusion tube 400. The upper cover 210 and the sealing member 300 slide relative to each other, but the lower cover 220 and the sealing member 300 do not undergo a change in relative displacement. The welding of the upper cover body 210 and the lower cover body 220 ensures that the whole cover body 200 cannot be broken, ensures the integrity of the cover body 200, and then ensures that the infusion bag accessory 100 can continuously and stably transmit liquid.

Further, the upper cover body 210 includes a cover opening 213, a circular truncated cone 215 and a first connecting member 217 connected to the lower cover body 220, which are connected in sequence, and the cover opening 213, the circular truncated cone 215 and the first connecting member 217 are uniformly movably connected to the sealing member 300. The cover opening piece 213 and the first connecting piece 217 are both cylinders, and the radius of one side of the circular truncated cone body relatively close to the cover opening body is smaller, and along with the fact that the circular truncated cone body is gradually close to the first connecting piece 217, the radius of the circular truncated cone body is gradually increased. The diameter of the cover mouth piece 213 corresponds to the diameter of the side of the truncated cone close to the cover mouth piece 213, and the diameter of the first connecting piece 217 corresponds to the diameter of the side of the truncated cone far from the cover mouth piece 213. And the cover mouth piece 213, the truncated cone and the first connecting piece 217 are integrally formed, so that the stability of the structure of the infusion bag accessory 100 is ensured, the damage of the structure is prevented, and the infusion safety is ensured.

Further, the end of the cover opening 213 relatively far from the circular truncated cone 215 is provided with an easy-to-tear film 219, and the easy-to-tear film 219 is also welded at the end of the cover opening 213, so as to seal and protect the sealing element 300 and the cover body 200. When the infusion bag accessory 100 needs to be used, the easy-to-tear film 219 is torn off, so that the infusion apparatus and the infusion bag accessory 100 can be used for infusion.

Further, the inner surface of the boss 215 is provided with a protrusion assembly 230, and the protrusion assembly 230 is connected with the sealing member 300. The protrusion member 230 can displace to a small extent relative to the sealing member 300, so that a gap is formed between the upper cover 210 and the sealing member 300, and the liquid in the sealing member 300 can flow through the gap between the upper cover 210 and the sealing member 300 under the action of gravity, and then flow out of the top of the cover opening 213, so that the liquid can flow out of the infusion bag accessory 100.

Further, referring to fig. 2, the protrusion assembly 230 includes a first protrusion 232 and a second protrusion 234, the first protrusion 232 and the second protrusion 234 are disposed opposite to each other, are located on the same horizontal plane, and are disposed along an outer diameter of the truncated cone, and both the first protrusion 232 and the second protrusion 234 are connected to the sealing member 300. However, it should be noted that the number of the protrusions in the protrusion assembly 230 is not limited to two provided in this embodiment, and may be increased or decreased reasonably according to actual production requirements. Meanwhile, the position of the protrusion can be properly adjusted, all the protrusions are not effective on the same horizontal plane, but preferably, the middle of the circular truncated cone 215 provided with the protrusion is better, so that the force used when the protrusion slides is smaller, meanwhile, the protrusion assembly 230 is not suitable to be separated from the sealing element 300, the sealing element 300 is prevented from sliding into the cover body 200, and the sealing effect of the sealing element 300 on the cover body 200 is guaranteed.

Further, the lower cover 220 is a cylinder, and the radius of the lower cover is consistent with that of the first connecting member 217, so that the upper cover 210 and the lower cover 220 can be stably welded together, and the structural integrity of the cover 200 is ensured, so that the cover 200 can be tightly sealed with the sealing member 300. The lower cap body 220 is integrally formed with the sealing member 300 such that the lower cap body 220 and the sealing member 300 do not undergo displacement change. The central position of the bottom of the lower cover 220 is provided with an opening, the opening is communicated with one end of the infusion tube 400, so that the liquid enters the cover 200 from the infusion tube 400, and the liquid can smoothly enter the sealing element 300.

Further, the sealing member 300 serves to seal the cover body 200, preventing dust and the like from falling into the cover body 200, and then contaminating the solution flowing through the cover body 200. The sealing member 300 includes a soft plug member 310 for sealing the opening of the cap body 200 and an inner plug member 320 for sealing the inside of the cap body 200, the soft plug member 310 and the inner plug member 320 are connected to the cap body 200, and one end of the soft plug member 310 is connected to the inner plug member 320. The soft plug member 310 and the inner plug member 320 are integrally formed, the soft plug member 310 has a solid structure to facilitate sealing of the cover opening of the cover body 200, and the cover opening of the cover body 200 is the end of the cover opening 213 relatively far away from the first connecting member 217. The inner plug 320 has a hollow structure to facilitate temporary storage of the liquid, and also to facilitate the inner plug 320 to generate a gap with the upper cap body 210, so that the liquid temporarily stored in the inner plug 320 flows out from the outflow port 103 and then flows out of the cap body 200 through the gap between the inner plug 320 and the upper cap body 210. Specifically, when infusion is required, the soft plug 310 is squeezed using the infusion set catheter so that a gap is created between the soft plug 310, the inner plug 320 and the cap body 200, and then the liquid in the inner plug 320 flows out through the outflow port 103 to the gap between the inner plug 320 and the boss 215, the first connector 217 and then flows out of the port of the cap body 200 through the gap between the cap mouth piece 213 and the soft plug 310. Meanwhile, the infusion tube 400 continuously introduces the liquid in the infusion bag into the sealing element 300, and then the above process is repeated continuously until the liquid delivery is finished.

Further, the soft plug 310 is made of a substance having flexibility, such as an elastomer, rubber, or the like. The inner plug 320 and the soft plug 310 are made of the same material, and seal the circular truncated cone 215, the first connecting member 217 and the lower cover 220.

Further, the soft plug 310 is prepared by the following method: firstly, mixing a sealing element 300 raw material which comprises 5 percent of polypropylene, 70 percent of styrene-butadiene-styrene copolymer and 25 percent of thermoplastic ethylene propylene diene dynamic vulcanized elastomer, pentaerythritol tetrakis- [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris- [2, 4-di-tert-butylphenyl ] phosphite additive by weight of 0.15 percent of the total weight of the mixture, feeding the mixture into a double-screw extruder at 170 ℃, plasticizing and shearing the mixture by the extruder, finally conveying the mixture to a circular die, connecting the die with an underwater granulator, cutting the extruded strip fluid into particles by the underwater granulator by using water at the temperature of 20 ℃, dehydrating the particles by a centrifuge, conveying the particles by a pipeline, conveying the particles by 50 ℃ air for transportation and drying in the conveying process, upon completion of drying, pellets of the sealer 300 were obtained.

Further, the outer surface of the inner plug 320 on the side opposite to the soft plug 310 is provided with a recess assembly 330, and the recess assembly 330 is connected with the cap body 200. Specifically, the concave component 330 and the convex component 230 cooperate to enable the convex component 230 to be located in the concave component 330, and a certain displacement can occur in the concave component 330, that is, a certain displacement occurs between the concave component 330 and the convex component 230, so that a certain gap can exist between the sealing member 300 and the cover body 200, and then the solution can conveniently enter the gap and then flow out of the cover body 200.

Further, with reference to fig. 1 and 2, the recess assembly 330 includes a first recess member 332 and a second recess member 334, the first recess member 332 and the first protrusion 232 cooperate, and the second recess member 334 and the second protrusion 234 cooperate with each other. First and second

concave elements

332 and 334, respectively, are disposed along the outer wall of the inner plug 320 relatively close to the soft plug 310.

Further, the infusion tube 400 is used for transporting the liquid in the infusion bag into the sealing member 300, i.e. the inner plug 320, and then the liquid is infused into the human body through the outflow port 103. The infusion tube 400 is an existing infusion tube 400.

Further, the connecting assembly 500 includes a second connector 510, and the second connector 510 is sleeved on an end of the infusion tube 400 relatively far away from the cover 200 and connected to the infusion tube 400. Coupling assembling 500 is connected with infusion bag, has realized being connected of infusion bag and infusion bag accessory 100, specifically, places coupling assembling 500 in the infusion bag to weld infusion bag and second connecting piece 510, guarantee the sealed effect of infusion bag, prevent then that the liquid in the infusion bag from being contaminated, guarantee simultaneously that the liquid in the infusion bag can be transported in the lid 200.

Further, the second connector 510 has a shuttle-shaped cross-section. That is, the second connecting member 510 is "thin at both ends and thick at the middle" and is convenient for connecting with the infusion bag. The middle part of the second connecting piece 510 is communicated with the infusion tube 400, and the second connecting piece 510, the infusion tube 400 and the inner plug 320 are integrally formed.

Further, the second connecting member 510 is provided at opposite ends thereof with tail wings 513, and the tail wings 513 are connected to the second connecting member 510. And the empennage 513 is welded with the infusion bag, the empennage 513 can increase the contact area between the second connecting piece 510 and the infusion bag, so that the acting force of the infusion bag and the second connecting piece 510 is increased, and the infusion bag is effectively prevented from falling off.

The surface of the second connecting piece 510 is provided with a plurality of concave grids 515, and the concave grids 515 can increase the acting force between the second connecting piece 510 and the infusion bag to prevent the infusion bag from falling off.

The invention also provides an infusion device, which comprises the infusion bag accessory 100.

In this embodiment, the operation method and principle of the infusion bag accessory are as follows:

and placing the second connecting piece in the infusion bag, welding the second connecting piece with the infusion bag, and placing the sealing piece in the cover body to seal the cover body. When needs infuse, the infusion accessory is fixed on infusion bag, tear and easily tear the membrane, use infusion pipe extrusion soft plug member, make protruding subassembly take place certain displacement in sunken subassembly, then make soft plug member, interior plug member takes place certain displacement in the lid, then the liquid of interior plug member can flow to the clearance between interior plug member and the last lid after flowing to the clearance between soft plug member and the last lid through the egress opening, the lid flows out at last, simultaneously in the infusion bag liquid passes through the transfer line and enters into interior plug member, then flow to the egress opening.

Second embodiment

Referring to fig. 3, the infusion bag accessory provided in this embodiment has the same basic structure as the infusion bag accessory 100 provided in the first embodiment, except that the easy-tear film 219 is not provided, and a dust cap 520 is used.

Specifically, the outer portion of the end, which is relatively far away from the circular truncated cone 215, of the cover opening 213 is provided with an external thread 521, an internal thread 523 matched with the external thread 521 is arranged in the dust cover 520, and the internal thread 523 is in thread fit with the external thread 521, so that the dust protection of the sealing element 300 and the inner portion of the cover body 200 is realized.

The sealing member 300 of the present invention is prepared by the following method: firstly, mixing a sealing element 300 raw material which comprises 10 percent of polypropylene, 65 percent of styrene-butadiene-styrene copolymer and 25 percent of thermoplastic ethylene propylene diene dynamic vulcanized elastomer, pentaerythritol tetrakis- [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris- [2, 4-di-tert-butylphenyl ] phosphite additive by weight of 0.15 percent of the total weight of the mixture, feeding the mixture into a double-screw extruder at 190 ℃, plasticizing and shearing the mixture by the extruder, finally conveying the mixture to a circular die, connecting the die with an underwater granulator, cutting the extruded strip fluid into particles by the underwater granulator by using water at the temperature of 20 ℃, dehydrating the particles by a centrifuge, conveying the particles by a pipeline, and conveying and drying the particles by air at the temperature of 40 ℃ in the conveying process, upon completion of drying, pellets of the sealer 300 were obtained.

Third embodiment

Referring to fig. 4, the infusion bag accessory of this embodiment has the same basic structure as the infusion bag accessory 100 of the first embodiment, but differs from the connection assembly 500 of this embodiment in that the structure thereof is changed.

Specifically, in the present embodiment, the connection assembly 500 includes a first interface 530 and a second interface 540, the first interface 530 is disposed at an end of the infusion tube 400 relatively far from the lower cover 220 and integrally formed with the infusion tube 400, an external thread 531 is disposed outside the first interface 530, an internal thread 542 is disposed at an end of the second interface 540, the first interface 530 and the second interface 540 are in threaded fit with the external thread 531 through the internal thread 542, and the other end of the second interface 540 is disposed in the infusion bag and welded to the infusion bag.

In conclusion, the parts of the infusion bag are sealed by the easily-torn film, so that the infusion bag is easy to open and convenient to use. The infusion mode breaks through the traditional puncture mode and adopts a novel structure to carry out infusion, the falling scraps in the puncture process of the infusion needle are avoided, and the safety of medication can be greatly improved. Meanwhile, the risk that the infusion apparatus falls off due to the fact that the infusion apparatus is fixed through puncture in the prior art is avoided, and the infusion bag accessory can further avoid the phenomenon that the contact area of the infusion apparatus and the gasket is loosened due to shaking of the infusion apparatus after puncture in the prior art. Meanwhile, the sealing element is formed by injection molding, the preparation process is simple, and the product precision is high. The infusion accessory has the advantages of no deformation, no discoloration, high strength and high safety in the sterilization treatment process at 121 ℃.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An infusion bag accessory is characterized by comprising a cover body, a sealing piece for sealing the cover body, an infusion tube for transporting liquid and a connecting assembly for realizing connection of an infusion bag, wherein the sealing piece is arranged in the cover body and connected with the cover body;

the cover body comprises an upper cover body and a lower cover body, the upper cover body and the lower cover body are welded with the sealing elements which are arranged in the upper cover body and the lower cover body and are connected with the upper cover body and the lower cover body, the sealing elements are movably connected with the upper cover body, and the lower cover body is connected with one end of the infusion tube;

the upper cover body comprises a cover opening piece, a circular truncated cone piece and a first connecting piece connected with the lower cover body in sequence, and the cover opening piece, the circular truncated cone piece and the first connecting piece are movably connected with the sealing piece;

the inner surface of the circular truncated cone is provided with a convex component, and the convex component is movably connected with the sealing element;

the convex component can be displaced relative to the sealing element, so that a gap for liquid to flow out is formed between the upper cover body and the sealing element.

2. The accessory according to claim 1, wherein the sealing member comprises a soft plug for sealing the opening of the cover and an inner plug for sealing the inside of the cover, the soft plug and the inner plug are both connected to the cover, and one end of the soft plug is connected to the inner plug.

3. The accessory according to claim 2, wherein the outer surface of the inner plug on the side opposite to the soft plug is provided with a recessed component, and the recessed component is connected with the cover body.

4. The accessory of an infusion bag according to claim 1, wherein the coupling assembly comprises a second coupling member that is sleeved on an end of the infusion tube that is relatively far from the cover and is coupled to the infusion tube.

5. The accessory of claim 4, wherein the second connector is fusiform in cross-section.

6. The accessory for an infusion bag according to claim 4, wherein the second connector is provided with fins at opposite ends, the fins being connected to the second connector.

7. An infusion device comprising the infusion bag accessory of claim 1.