CN211132173U - Sealing element for infusion container - Google Patents

Abstract

The utility model relates to a sealing element for an infusion container, which is characterized in that the sealing element for the infusion container comprises a cover body and a liquid-proof film or a liquid-proof thin sheet with the thickness of 0.1mm-0.4 mm; the cover body can be arranged on the mouth part of the transfusion container; the liquid isolating film or the liquid isolating sheet is arranged in the cover body and is fixedly connected with the cover body in a sealing way, or the liquid isolating film or the liquid isolating sheet is arranged on the mouth part of the transfusion container or the interface thereof and is fixedly connected with the mouth part of the transfusion container or the interface thereof in a sealing way; the cover body is internally provided with a thermoplastic elastomer pad which is fixedly connected with the cover body in a sealing way. The sealing element is easy to weld and difficult to fall scraps, and can avoid the problem of gas trapping of the thermoplastic elastomer in the injection molding process.

Description

Sealing element for infusion container

Technical Field

The utility model relates to a sealing element for seal infusion container.

Background

The sealing standard of the injection point of the infusion medicine package is as follows: 10 sealing elements are respectively assembled on a plastic infusion container which is used in a matched way, injection water with the indicated volume is filled into the container and then sealed, an injection needle with the outer diameter of 0.8mm is used for vertically puncturing 3 times at different points of a puncturing area of the sealing element, after the injection needle is pulled out, the plastic infusion container is placed between two parallel flat plates, internal pressure of 20kPa is applied for maintaining for 15 seconds, and no liquid leakage exists at an insertion point.

As shown in fig. 1, which is an injection molding diagram of the existing integrated sealing element, the existing integrated sealing element includes a PP/PE cap body 3, an integrated liquid-separating film 7 and a thermoplastic elastomer (TPE) pad 6 are provided in the PP/PE cap body 3, the integrated liquid-separating film 7 and the PP/PE cap body 3 are integrally formed, the thermoplastic elastomer pad 6 is provided on the upper side of the integrated liquid-separating film 7, an isolation medium 8 (such as a silicone oil/PP film) is provided between the integrated liquid-separating film 7 and the thermoplastic elastomer pad 6, a water-blocking rib 1 is provided on the thermoplastic elastomer pad 6, a needle-punched hole 2 and a glue inlet 10 are provided on the thermoplastic elastomer pad 6, and a film 5 is provided on the PP/PE cap body 3. The disadvantages of this structure are: 1. gas trapping phenomenon exists in the injection molding process of the thermoplastic elastomer pad 6; 2. ideally, the spacer medium 8 is disposed in the middle of the integrally formed liquid-barrier film 7, and serves to prevent the thermoplastic elastomer pad 6 from adhering to the integrally formed liquid-barrier film 7, thereby improving the resilience of the thermoplastic elastomer pad 6. However, in actual operation, the thermoplastic elastomer pad 6 cannot flow according to the design concept during the injection molding flow process, so that the thermoplastic elastomer pad 6 has irregular flow during the actual injection molding process, the isolation medium 8 is flushed to other parts, the thermoplastic elastomer pad 6 is bonded with the integrally formed liquid isolation film 7, and the resilience of the thermoplastic elastomer pad 6 is reduced. 3. When the puncture needle 9 with the outer diameter of 0.8mm (or 1.2mm or 1.6mm) punctures the thermoplastic elastomer pad 6 and the liquid isolating membrane 7 according to the standard, after the liquid medicine is injected and is pulled out, the PP/PE cover body 3 can not be peeled off from the thermoplastic elastomer pad 6 due to the thin outer diameter of the puncture needle 9, so that the thermoplastic elastomer pad 6 is held by the integrally-formed liquid isolating membrane 7 at the puncture part of the puncture needle 9, the thickness of the puncture hole part of the thermoplastic elastomer pad 6 is reduced, and the resilience of the thermoplastic elastomer pad 6 is reduced. There is a liquid leakage phenomenon.

As shown in fig. 2, the existing combined cover includes a PP/PE cover body 3, a liquid isolating pressing sheet 7.1 is ultrasonically welded in the PP/PE cover body 3, a film 5 is arranged on the PP/PE cover body 3, a rubber gasket 6.1 is arranged on the liquid isolating pressing sheet 7.1, and the structure has the following defects: 1. the rubber gasket 6.1 has more production procedures, high cost and high probability of pollution; 2. the PP/PE cover body 3 and the liquid isolating pressing sheet 7.1 are welded into a whole, and burrs, broken wires and the like are generated on the welding edge due to the thickness of the liquid isolating pressing sheet 7.1 (the phenomenon that the contact part with liquid cannot have broken wires, particles and the like, and objects such as the broken wires, the particles and the like falling into the liquid flow into the infusion pipeline along with the liquid, so that the risk of flowing into a human body exists). 3. The rubber gasket 6.1 in the combined cover is extruded by the PP/PE cover body 3 and the liquid isolating pressing sheet 7.1, so that the rubber gasket 6.1 is compressed and rebounded to solve the problem of needle drawing leakage; in the infusion process, when the puncture needle 9 pierces the rubber gasket 6.1 and the liquid separation pressing sheet 7.1, a considerable pushing force is generated, and if the PP/PE cover body 3 and the liquid separation pressing sheet 7.1 are welded insecurely, the rubber gasket 6.1 and the liquid separation pressing sheet 7.1 are pushed into an infusion container by the puncture needle 9. 3. The phenomenon of chip falling after the puncture of the liquid-proof tabletting 7.1 in the combined cover.

Disclosure of Invention

The utility model aims at providing a sealing member for infusion container, this sealing member easily welds, is difficult for the bits that fall, and can avoid the stranded gas problem that thermoplastic elastomer exists at the in-process of moulding plastics.

In order to achieve the aim, the utility model provides a sealing element for an infusion container, which is characterized by comprising a cover body and a liquid-proof film with the thickness of 0.1mm-0.4mm or a liquid-proof slice with the thickness of 0.1mm-0.4 mm; the cover body can be arranged on the mouth part of the transfusion container; the liquid isolating film or the liquid isolating sheet is arranged in the cover body and is fixedly connected with the cover body in a sealing way, or the liquid isolating film or the liquid isolating sheet is arranged on the mouth part of the transfusion container or the interface thereof and is fixedly connected with the mouth part of the transfusion container or the interface thereof in a sealing way; the cover body is internally provided with a thermoplastic elastomer pad which is fixedly connected with the cover body in a sealing way.

Preferably, the liquid-proof film or the liquid-proof sheet is positioned on one side of the thermoplastic elastomer pad close to the infusion container.

Preferably, the cover body and the thermoplastic elastomer pad are integrally formed, and the liquid-proof film or the liquid-proof sheet and the cover body are not integrally formed.

Preferably, the liquid-proof film or the liquid-proof sheet is connected with the cover body in a welding mode.

Preferably, the thermoplastic elastomer pad is partially or completely separated from the liquid barrier film or sheet.

Preferably, the inner wall of the cover body is provided with an annular protrusion, and the edge of the liquid-proof film or the liquid-proof sheet is fixedly connected with the annular protrusion in a sealing way.

Preferably, the liquid-proof film or the liquid-proof sheet is positioned at the middle part or the bottom part of the cover body.

Preferably, the thermoplastic elastomer pad is provided with one or more needle punched holes on the upper side and/or the lower side.

More preferably, the cross section of the needle-punched hole is circular, elliptical or elliptical-like.

More preferably, the longitudinal section of the needle-punched hole is square or trapezoid.

More preferably, the inner diameter of the needle hole is smaller than the diameter of the puncture needle, and the puncture needle is a resin needle.

Preferably, the thermoplastic elastomer pad is provided with at least one groove (also called hanging empty position), and the groove is positioned on the upper side and/or the lower side of the thermoplastic elastomer pad.

Preferably, the side wall of the groove is a straight surface (i.e., a surface extending in a vertical direction) or a tapered surface. The shape of the groove can be changed according to different structures and different hole numbers of products.

Preferably, the upper side of the cover body is provided with a film, a pull ring type gland, an easy-folding gland or an easy-pulling gland.

More preferably, the pull ring type gland comprises a gland body arranged on the upper side of the cap body, the edge and the middle part of the gland body can be separated by means of external force, the middle part of the gland body is connected with the pull ring, and when the edge and the middle part of the gland body are separated, the edge of the gland body is remained on the upper side of the cap body; the easy-to-break type gland comprises a gland body arranged on the upper side of the cover body, an infusion hole allowing a puncture needle to pass through is formed in the gland body, an easy-to-break handle is arranged in the infusion hole of the gland body and connected with the gland body into a whole, and the easy-to-break handle and the gland body can be separated from each other by means of external force so as to expose the infusion hole; the easy-pulling type gland comprises a gland body arranged on the upper side of the cap body, an infusion hole allowing a puncture needle to penetrate through is formed in the gland body, an easy-pulling handle is arranged in the infusion hole of the gland body and connected with the gland body into a whole, and the easy-pulling handle and the gland body can be separated from each other by means of external force so as to expose the infusion hole.

More preferably, the easy-to-break handle is arranged along a direction perpendicular to the upper end surface of the gland body, and the easy-to-pull handle is arranged along a direction parallel to the upper end surface of the gland body.

Preferably, the infusion container is an infusion bottle or a soft bag, an interface for connecting with an interface piece of the infusion bottle, the soft infusion bag or the soft infusion bag is formed at the lower end of the cover body, one or two cavities are arranged in the cover body, the thermoplastic elastomer pad is arranged in at least one cavity of the cover body, and the thermoplastic elastomer pad is fixedly connected with the inner wall of the cavity in a sealing manner.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a separate liquid mantle or separate liquid thin slice have thickness thin, and the compliance is good, advantages such as easy welding, and welding edge is leveled phenomenon such as deckle edge, broken filament can not appear, and the puncture does not have the bits that fall.

2. The utility model discloses a thermoplastic elastomer pad and lid sealing fixed connection, separate liquid mantle or separate liquid thin slice and lid and pass through the hot melt welding together, keep apart liquid and thermoplastic elastomer's contact, separate liquid mantle or separate liquid thin slice and thermoplastic elastomer and be part or whole separation state, when thermoplastic elastomer was extracted to the pjncture needle, thermoplastic elastomer did not receive the containment of separating liquid mantle or separating liquid thin slice, full play thermoplastic elastomer's resilience performance, prevent that liquid from flowing out/oozing a body lid.

3. The utility model discloses a hang vacancy's effect is: the weight of TPE raw materials is reduced, and the production cost of various integrated covers is reduced; the sectional area of the thermoplastic elastomer can be increased, the cooling and shaping of the thermoplastic elastomer are accelerated, the product forming period is shortened, and the product yield is improved;

4. the utility model has the advantages that the needling holes are arranged to reduce the needling thickness, so as to facilitate puncture, the thinning of the needling layer can reduce the material consumption of the thermoplastic elastomer and reduce the needling scraps, so that the product is safer, and meanwhile, the puncture force is reduced, and the labor intensity of a user is reduced; the reduction of the diameter in the puncture hole increases the contact surface between the thermoplastic elastomer and the puncture needle (resin puncture needle), increases the weight, and is more reliable in use (the weight is 0.5-1.0Kg at present) when being connected with the international rail, and the current domestic standard is 0.3 Kg.

5. Because the liquid-proof soft film or the liquid-proof sheet and the cover body are not integrally formed, the problem of air trapping of the thermoplastic elastomer in the injection molding process can be avoided.

Drawings

FIG. 1 is a prior art injection molding diagram of an integrally formed seal;

FIG. 2 is a prior art injection molding diagram of a composite cover;

fig. 3 is a schematic structural view of a seal for an infusion container in example 1.

Fig. 4 is a schematic structural view of a seal for an infusion container in example 16.

Fig. 5 is an exploded view of a sealing material for an infusion container in example 16.

Fig. 6 is a schematic structural view of a seal for an infusion container in example 2.

Fig. 7 is a schematic structural view of a seal for an infusion container in example 17.

Fig. 8 is a schematic structural view of a seal for an infusion container in example 3.

Fig. 9 is a schematic structural view of a seal for an infusion container in example 4.

Fig. 10 is a schematic structural view of a seal for an infusion container in example 18.

Fig. 11 is a schematic structural view of a seal for an infusion container in example 5.

Fig. 12 is a schematic structural view of a seal for an infusion container in example 19.

FIG. 13 is a schematic diagram of the force applied during acupuncture.

Fig. 14 is a schematic structural view of a seal for an infusion container in example 6.

Fig. 15 is a schematic structural view of a seal for an infusion container in example 7.

Fig. 16 is an exploded view of a sealing material for an infusion container in example 7.

Fig. 17 is a schematic structural view of a seal for an infusion container in example 8.

Fig. 18 is a schematic structural view of a seal for an infusion container in example 9.

Fig. 19 is a schematic structural view of a seal for an infusion container in example 10.

Fig. 20 is a schematic structural view of a seal for an infusion container in example 11.

Fig. 21 is a schematic structural view of a seal for an infusion container in example 12.

Fig. 22 is an exploded view of a seal for an infusion container in example 12.

Fig. 23 is a schematic structural view of a seal for an infusion container in example 13.

Fig. 24 is a schematic structural view of a seal for an infusion container in example 14.

Fig. 25 is a schematic structural view of a seal for an infusion container in example 15.

Fig. 26 is a schematic structural view of a seal for an infusion container in example 21.

Fig. 27 is a bottom view of the infusion container seal of example 21.

FIG. 28 is a standard resin needle diagram.

Fig. 29 is a schematic structural view of a seal for an infusion container in example 22.

Fig. 30 is a schematic structural view of a seal for an infusion container in example 24.

Fig. 31 is an exploded view of a sealing material for an infusion container in example 24.

Fig. 32 is a schematic structural view of a seal for an infusion container in example 25.

Fig. 33 is an exploded view of the infusion container sealing material in example 25.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

Example 1

As shown in figure 3, the sealing element for the infusion container of the utility model comprises a PP/PE cover body 3 and a liquid-proof soft film 7.2 with the thickness of 0.2 mm; the PP/PE cover body 3 can be covered on the mouth part of the transfusion container; a cavity 31 is formed in the PP/PE cover body 3, and the liquid isolating soft film 7.2 is arranged in the cavity 31 of the PP/PE cover body 3 and is fixedly connected with the inner wall of the cavity 31 of the PP/PE cover body 3 in a sealing way; the cavity of the PP/PE cover body 3 is also internally provided with a thermoplastic elastomer pad 6, and the thermoplastic elastomer pad 6 is fixedly connected with the inner wall of the cavity of the PP/PE cover body 3 in a sealing way. The liquid-proof soft membrane 7.2 is used for isolating the liquid in the infusion container from contacting the thermoplastic elastomer pad 6. The PP/PE cover body 3 is made of polypropylene (PP) or Polyethylene (PE).

The PP/PE cap body 3 and the thermoplastic elastomer pad 6 are integrally formed, the liquid isolating soft film 7.2 and the PP/PE cap body 3 are not integrally formed but are fixedly connected in a sealing mode in a hot melting welding mode, specifically, the annular protrusion 13 is arranged on the inner wall of the cavity of the PP/PE cap body 3, and the edge of the liquid isolating soft film 7.2 is fixedly connected with the annular protrusion 13 in a welding mode in a sealing mode. The liquid-proof soft membrane 7.2 is positioned on one side of the thermoplastic elastomer pad 6 close to the infusion container. The liquid-proof soft film 7.2 is positioned in the middle of the PP/PE cover body 3.

The liquid-proof soft film 7.2 adopts a medical packaging multilayer co-extrusion film material sold in the market, such as a co-extrusion transfusion film produced by Hubei Hengtai rubber and plastic Limited company, the liquid-proof soft film 7.2 has the advantages of good flexibility, easy welding and the like due to thinner thickness, the welding edge is smooth, the phenomena of burrs, broken filaments and the like can not occur, and no scrap is generated during puncture.

The thermoplastic elastomer pad 6 is provided with a plurality of needle-punched holes 2, and the cross sections of the needle-punched holes are circular. The longitudinal section of the needle punching hole is in an inverted trapezoid shape. The inner diameter of the needle-punched hole 2 is smaller than the diameter d of the puncture needle 9 (resin needle) as shown in fig. 28.

The thermoplastic elastomer pad 6 is provided with 3 grooves 4 (also called hanging vacant positions), and the grooves 4 are positioned at the lower side of the thermoplastic elastomer pad 6. The cross section of the groove 4 can be in various shapes, in this embodiment, the groove is in a fan shape, and the side wall of the groove 4 is a straight surface. The groove 4 and the needle-punched hole 2 are arranged at intervals, the periphery of the groove 4 is not connected with the needle-punched hole 2, when the puncture needle 9 penetrates the thermoplastic elastomer pad 6 from the needle-punched hole 2 and is pulled out, the thermoplastic elastomer pad 6 in the needle-punched hole 2 can be rapidly rebounded and closed, and liquid is prevented from flowing out or seeping out of the PP/PE cover body 3.

The infusion container is an infusion plastic bottle. The lower end of the PP/PE cover body 3 is provided with an interface used for being connected with an infusion bottle. The upper side of the PP/PE cover body 3 is provided with a pad pasting 5. The thermoplastic elastomer pad 6 is provided with a glue inlet 10, and the glue inlet 10 is a feeding place in the injection molding process.

The production process of the sealing element for the infusion container comprises the following steps:

step 1: a first mould PP/PE cover body 3 is formed on a cover body injection area of a multi-material double-color injection molding machine through one-step injection molding by using a multi-material double-color injection mold;

step 2: the multi-material double-color injection molding machine opens the mold, rotates the machine table, closes the mold again, and injects the thermoplastic elastomer pad 6 in the first mold PP/PE cover body 3 in the thermoplastic elastomer injection area of the multi-material double-color injection molding machine, so that the thermoplastic elastomer pad 6 and the PP/PE cover body 3 are occluded into a whole. At this time, the liquid-proof soft film 7.2 is not formed in the PP/PE cap body 3, and the injection molding thermoplastic elastomer pad 6 does not have the air trapping phenomenon. Simultaneously, a second mould PP/PE cover body 3 is formed in a cover body injection area of the multi-material double-color injection molding machine in a one-time injection molding mode;

and step 3: a multi-material double-color injection molding machine rotating machine table is characterized in that a first mold finished product is formed in a cover body injection area of a multi-material double-color injection molding machine, mold assembly is carried out again, a third mold PP/PE cover body 3 is formed in the cover body injection area of the multi-material double-color injection molding machine in a one-step injection molding mode, meanwhile, a thermoplastic elastomer pad 6 is formed in a second mold PP/PE cover body 3 in a thermoplastic elastomer injection area of the multi-material double-color injection molding machine in an injection molding mode, and repeated reciprocating action is analogized.

And 4, step 4: and spraying medical silicone oil on the injection-molded finished thermoplastic elastomer pad 6 by using a film sticking machine, carrying out hot-melt welding on a liquid isolating soft film 7.2 in the PP/PE cover body 3, and then carrying out hot-melt film sticking 5 on the PP/PE cover body 3 for detection to obtain the sealing element for the infusion container.

When the PP/PE cap body 3 is hot-melt welded on the mouth part of the infusion container, as shown in figure 13, the adhesive film 5 is torn off, and the thermoplastic elastomer pad 6 and the liquid-separating soft membrane 7.2 are punctured by the puncture needle 9 (the puncture needle 9 can be a resin needle or an injection steel needle.) through the puncture hole 2 to enter the infusion container for medicine feeding or infusion, because the thermoplastic elastomer pad 6 and the liquid-separating soft membrane 7.2 are in a separated state. When the puncture needle 9 is pulled out of the thermoplastic elastomer pad 6, the thermoplastic elastomer pad 6 is not restrained by the liquid-proof soft film 7.2, the resilience of the thermoplastic elastomer pad 6 is fully exerted, and the liquid is prevented from flowing out/seeping out of the PP/PE cap body 3.

Example 2

As shown in fig. 6, the sealing member for infusion container of this embodiment is similar to embodiment 1 except that the film 5 is replaced by an easy-folding type gland, the easy-folding type gland includes a gland body 5.2 disposed on the upper side of the PP/PE cap body 3, an infusion hole 5.6 allowing the puncture needle 9 to pass through is disposed on the gland body 5.2, an easy-folding handle 5.1 is disposed in the infusion hole 5.6 of the gland body 5.2, the easy-folding handle 5.1 is connected with the gland body 5.2 into a whole, the easy-folding handle 5.1 and the gland body 5.2 can be separated from each other by external force, and the infusion hole 5.6 is exposed; the easy-to-break handle 5.1 is arranged along the direction vertical to the upper end surface of the gland body 5.2.

The production process of the sealing element for the infusion container is similar to that of the sealing element in the embodiment 1, and the difference is that the film sticking machine in the step 4 is replaced by a capping machine, the film 5 is hot-melted and stuck on the PP/PE cover body 3, and the easy-folding type capping is hot-melted and welded on the PP/PE cover body 3.

When the infusion bottle cap is used, the PP/PE cap body 3 is hot-melt welded on the opening part of an infusion container, the easily-folded handle 5.1 is broken, the easily-folded handle 5.1 is separated from the cap pressing body 5.2, an infusion hole 5.6 is exposed, and a puncture needle 9 is used for puncturing the infusion container through the puncture hole 2 to add medicine or infusion.

Example 3

As shown in fig. 8, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 1 except that the film 5 is replaced with a readily releasable cover 5.3. The easy-pulling type gland 5.3 comprises a gland body 5.2 arranged on the upper side of the PP/ PE cap body 3, 2 transfusion holes 5.6 allowing puncture needles to pass through are formed in the gland body 5.2, an easy-pulling handle 5.7 is arranged in the transfusion holes 5.6 of the gland body, the easy-pulling handle 5.7 is connected with the gland body 5.2 into a whole, and the easy-pulling handle 5.7 and the gland body 5.2 can be separated from each other by means of external force so as to expose the transfusion holes 5.6. The easy-to-pull handle 5.7 is arranged along the direction parallel to the upper end surface of the gland body 5.2.

The production process of the sealing element for the infusion container is similar to that of the embodiment 1, and the difference is that the film sticking machine in the step 4 is replaced by a capping machine, the film 5 is hot-melted and stuck on the PP/PE cover body 3, and the easy-pulling type gland 5.3 is hot-melted and welded on the PP/PE cover body 3.

When the disposable infusion bottle cap is used, the PP/PE cap body 3 is welded on the opening of an infusion container in a hot melting mode, the easily-pulled handle 5.7 is separated from the cap pressing body 5.2, the infusion hole 5.6 is exposed, and the puncture needle 9 is used for puncturing the infusion container through the puncture hole 2 to add medicine or infusion.

Example 4

As shown in fig. 9, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 1 except that the film 5 is replaced with a readily releasable cover 5.3. Easy pull type gland 5.3 including arranging the gland body of 3 upsides of PP PE lid body in, be equipped with 1 transfusion hole that allows the pjncture needle to pass on the gland body, be equipped with easy pull handle in the transfusion hole of gland body, easy pull handle links as an organic whole with the gland body, easy pull handle can separate mutually with the help of external force with the gland body, and then exposes the transfusion hole. The easy-to-pull handle is arranged along the direction parallel to the upper end surface of the gland body.

The production process of the sealing element for the infusion container is similar to that of the embodiment 1, and the difference is that the film sticking machine in the step 4 is replaced by a capping machine, the film 5 is hot-melted and stuck on the PP/PE cover body 3, and the easy-pulling type gland 5.3 is hot-melted and welded on the PP/PE cover body 3.

When the disposable infusion bottle cap is used, the PP/PE cap body 3 is welded on the opening of an infusion container in a hot melting mode, the easy-to-pull handle is separated from the cap body, an infusion hole is exposed, and the puncture needle 9 is used for puncturing the infusion container through the puncture hole 2 to add medicine or infusion.

Example 5

As shown in fig. 11, the seal for an infusion container of the present embodiment is similar to that of embodiment 1 except that the film 5 is replaced with a pull-ring type cover 5.4. The pull ring type gland 5.4 comprises a gland body arranged on the upper side of the PP/PE cap body 3, the edge and the middle of the gland body can be separated by means of external force, the pull ring 5.5 is connected to the middle of the gland body, and when the edge and the middle of the gland body are separated, the edge of the gland body is reserved on the upper side of the cap body.

The production process of the sealing element for the infusion container is similar to that of the sealing element in the embodiment 1, and the difference is that the film sticking machine in the step 4 is replaced by a capping machine, the film 5 is hot-melted and stuck on the PP/PE cover body 3, and the pull-ring type capping 5.4 is hot-melted and welded on the PP/PE cover body 3.

When in use, the PP/PE cap body 3 is hot-melt welded on the opening part of the infusion container, the pull ring 5.5 drives the middle part of the gland body to be separated from the edge, and the puncture needle 9 is used for puncturing the infusion container through the puncture hole 2 to add medicine or infusion.

Example 6

As shown in fig. 14, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 1 except that the infusion container is a flexible infusion bag. The PP/PE cover body 3 is a cover body suitable for a soft infusion bag, and a port 3.1 used for being connected with the soft infusion bag is formed at the lower end of the PP/PE cover body. The groove 4 is located on the upper side of the thermoplastic elastomer pad 6.

Example 7

As shown in fig. 15 and 16, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 2 except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for a soft infusion bag, and an interface used for being connected with the soft infusion bag is formed at the lower end of the PP/PE cover body. The groove 4 is located on the upper side of the thermoplastic elastomer pad 6.

Example 8

As shown in fig. 17, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 4 except that the infusion container is an infusion soft bag. The PP/PE cover body 3 is a cover body suitable for a soft infusion bag, and an interface used for being connected with the soft infusion bag is formed at the lower end of the PP/PE cover body.

Example 9

As shown in fig. 18, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 3 except that the infusion container is a flexible infusion bag. The PP/PE cover body 3 is a cover body suitable for a soft infusion bag, and an interface used for being connected with the soft infusion bag is formed at the lower end of the PP/PE cover body.

Example 10

As shown in fig. 19, similar to example 5, except that the infusion container is a flexible infusion bag. The PP/PE cover body 3 is a cover body suitable for a soft infusion bag, and an interface used for being connected with the soft infusion bag is formed at the lower end of the PP/PE cover body.

Example 11

As shown in fig. 20, the sealing member for infusion container of the present embodiment is similar to that of embodiment 6, except that two cavities 31 are formed in the PP/PE cap body 3, and the two cavities 31 form two independent pipelines for administration or infusion respectively.

Example 12

As shown in fig. 21 and 22, the sealing member for infusion container of the present embodiment is similar to that of embodiment 7 except that two cavities are formed in the PP/PE cap body 3, and the two cavities form two independent pipelines for administration or infusion, respectively.

Example 13

As shown in fig. 23, the sealing member for infusion container of the present embodiment is similar to that of embodiment 8, except that two cavities are formed in the PP/PE cap body 3, and the two cavities form two independent pipelines for administration or infusion respectively.

Example 14

As shown in fig. 24, the sealing member for infusion container of the present embodiment is similar to that of embodiment 9 except that two cavities are formed in the PP/PE cap body 3, and the two cavities form two independent pipelines for administration or infusion respectively.

Example 15

As shown in fig. 25, similar to the embodiment 10, the difference is that two cavities are formed in the PP/PE cap body 3, and the two cavities form two independent pipelines for drug administration or infusion respectively.

Example 16

As shown in fig. 4 and 5, the packing for an infusion container of the present embodiment is similar to that of embodiment 1 except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6.

Example 17

As shown in fig. 7, the sealing member for an infusion container of the present embodiment is similar to embodiment 2 except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6.

Example 18

As shown in fig. 10, the sealing member for an infusion container of the present embodiment is similar to embodiment 4 except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6.

Example 19

As shown in fig. 12, the sealing member for an infusion container of the present embodiment is similar to that of embodiment 5 except that the groove 4 is located on the upper side of the thermoplastic elastomer pad 6.

Example 21

As shown in fig. 26 and 27, the packing for an infusion container of the present embodiment is similar to that of embodiment 1 except that the needle-punched holes 2 are provided on the upper and lower sides of the thermoplastic elastomer pad 6.

Example 22

As shown in fig. 29, the seal for an infusion container of the present embodiment is similar to that of embodiment 1 except that the liquid-impermeable flexible film 7.2 is provided on the bottom of the PP/PE cap body 3.

Example 23

The sealing member for infusion containers of this example is similar to example 1 except that the liquid-barrier flexible film 7.2 is replaced by a rigid liquid-barrier sheet made of PP/PE material meeting the requirements of medical packaging for liquid, and the thickness of the sealing member is the same as that of the liquid-barrier flexible film 7.2 in example 1.

Example 24

As shown in fig. 30 and 31, the sealing member for infusion containers of the present embodiment is similar to embodiment 1 except that the liquid-impermeable flexible film 7.2 is located at the mouth of the infusion plastic bottle 11 and is fixedly sealed and connected to the mouth of the infusion plastic bottle 11 by thermal fusion welding.

The production process of the sealing member for the infusion container is similar to that of example 1, except that step 4 is as follows: spraying medical silicone oil on the thermoplastic elastomer pad 6 of the finished product formed by injection molding by using a film sticking machine; after a plastic bottle preform is blown and filled with liquid on a plastic bottle infusion filling line, a liquid isolating soft film 7.2 is welded on a bottle opening in a hot melting mode to obtain an infusion plastic bottle 11, a PP/PE cover body 3 is welded on the opening of the infusion plastic bottle 11 in a hot melting mode, and sterilization is conducted.

Example 25

As shown in fig. 32 and 33, the sealing member for infusion container of the present embodiment is similar to embodiment 1, except that the liquid-proof flexible membrane 7.2 is located at the mouth of the interface 12 of the infusion soft bag 11.1 and is fixedly connected with the mouth of the interface 12 of the infusion soft bag 11.1 by thermal welding.

The production process of the sealing element for the infusion container is similar to that of example 1, except that step 4 is to spray medical-grade silicone oil on the injection-molded finished thermoplastic elastomer pad 6 by using a film sticking machine; welding an interface 12 on an infusion soft bag 11.1 on a soft bag infusion filling line, filling liquid in the infusion soft bag 11.1, carrying out hot melt welding on a liquid isolating soft film 7.2 at the opening of the interface 12, carrying out hot melt welding on a PP/PE cover body 3 on the interface 12, and sterilizing.

Claims (17)

1. A sealing element for an infusion container is characterized by comprising a cover body and a liquid-proof film with the thickness of 0.1mm-0.4mm or a liquid-proof sheet with the thickness of 0.1mm-0.4 mm; the cover body can be arranged on the mouth part of the transfusion container; the liquid isolating film or the liquid isolating sheet is arranged in the cover body and is fixedly connected with the cover body in a sealing way, or the liquid isolating film or the liquid isolating sheet is arranged on the mouth part of the transfusion container or the interface thereof and is fixedly connected with the mouth part of the transfusion container or the interface thereof in a sealing way; the cover body is internally provided with a thermoplastic elastomer pad which is fixedly connected with the cover body in a sealing way.

2. The sealant for an infusion container as claimed in claim 1, wherein the liquid-barrier film or sheet is provided on a side of the thermoplastic elastomer pad adjacent to the infusion container.

3. The packing for infusion containers as claimed in claim 1, wherein the cap body is integrally formed with the thermoplastic elastomer pad, and the liquid-barrier film or sheet is not integrally formed with the cap body.

4. The sealing member for an infusion container according to claim 1, wherein the liquid-impermeable film or sheet is joined to the cap body by welding.

5. The sealant according to claim 1 wherein the thermoplastic elastomer pad is partially or completely separated from the liquid barrier film or sheet.

6. The packing for infusion containers as claimed in claim 1, wherein an annular projection is provided on the inner wall of the cap body, and the edge of the liquid-barrier film or sheet is sealingly and fixedly connected to the annular projection.

7. The packing for an infusion container according to claim 1, wherein the liquid-barrier film or sheet is located at a middle portion or a bottom portion of the cap body.

8. The sealing member for an infusion container according to claim 1, wherein the thermoplastic elastomer pad is provided with one or more needle-punched holes on the upper side and/or the lower side thereof.

9. The closure for an infusion container of claim 8, wherein said needle-punched hole has a circular, elliptical or elliptical-like cross-section.

10. The sealing member for an infusion container according to claim 8, wherein said needle-punched hole has a square or trapezoidal longitudinal section.

11. The packing for an infusion container according to claim 8, wherein the inside diameter of said needle-punched hole is smaller than the diameter of the puncture needle, and said puncture needle is a resin needle.

12. The seal for an infusion container according to claim 1, wherein said thermoplastic elastomer pad is provided with at least one groove, said groove being located on the upper side and/or the lower side of the thermoplastic elastomer pad.

13. The sealing member for an infusion container according to claim 12, wherein the side wall of said groove is a straight surface or a tapered surface.

14. The sealing member for infusion container as claimed in claim 1, wherein the cap body has a film, a pull-ring type cover, an easily foldable cover or an easily bendable cover on its upper side.

15. The packing for an infusion container of claim 14, wherein the pull-ring type gland comprises a gland body disposed at an upper side of the cap body, an edge and a middle portion of the gland body being separable by an external force, the pull ring being attached to the middle portion of the gland body, the edge of the gland body remaining at the upper side of the cap body when the edge and the middle portion of the gland body are separated; the easy-to-break type gland comprises a gland body arranged on the upper side of the cover body, an infusion hole allowing a puncture needle to pass through is formed in the gland body, an easy-to-break handle is arranged in the infusion hole of the gland body and connected with the gland body into a whole, and the easy-to-break handle and the gland body can be separated from each other by means of external force so as to expose the infusion hole; the easy-pulling type gland comprises a gland body arranged on the upper side of the cap body, an infusion hole allowing a puncture needle to penetrate through is formed in the gland body, an easy-pulling handle is arranged in the infusion hole of the gland body and connected with the gland body into a whole, and the easy-pulling handle and the gland body can be separated from each other by means of external force so as to expose the infusion hole.

16. The sealing member for an infusion container according to claim 14, wherein said frangible handle is disposed in a direction perpendicular to the upper end surface of the gland body, and said frangible handle is disposed in a direction parallel to the upper end surface of the gland body.

17. The sealing member for infusion container as claimed in claim 1, wherein the infusion container is an infusion bottle or a soft bag, the lower end of the cover body is formed with an interface for connecting with the interface of the infusion bottle, the soft infusion bag or the soft infusion bag, one or two cavities are arranged in the cover body, the thermoplastic elastomer pad is arranged in at least one cavity, and the thermoplastic elastomer pad is fixedly connected with the inner wall of the cavity in a sealing manner.

Images