Combination joint of infusion soft bag

Abstract

The utility model discloses a combined connector of a soft infusion bag, which relates to the technical field of medicine packaging and comprises a connector body, a rubber cushion block and a cover body. The connector body comprises a cylindrical pipe, a connecting pipe and a rhombic pipe. An annular rib is fixedly arranged on the inner wall of the cylindrical pipe, and an annular supporting bulge is arranged at one end of the cylindrical pipe; the upper end of the rubber cushion block is truncated cone-shaped; a containing cavity is formed in the lower end of the cover body, an easy-to-fold handle is arranged on the outer top of the cover body, and an annular groove is formed in the outer side wall of the lower end of the cover body. The outer diameter of the rubber cushion block is smaller than the inner diameter of the cylindrical pipe and larger than the outer diameter of the annular supporting protrusion. The inner diameter of an opening formed after the easy-to-break handle is broken is smaller than the outer diameter of the top of the rubber cushion block. When the lower end of the cover body is embedded in the cylindrical pipe, the annular convex edge is clamped in the annular groove; the containing cavity of the cover body abuts against the top of the rubber cushion block. And the maximum outer diameter of the cover body is the same as the outer diameter of the cylindrical pipe. The structure is compact, materials are few, the welding area is small, hot melting is easy, assembling is easy, fast and efficient, the technology is simple, and energy consumption is low.

Description

Technical Field

[0001] The utility model relates to the technical field of medicine packaging, in particular to a combined joint for an infusion soft bag. Background Art

[0002] At present, basic infusion drugs have been gradually updated from glass bottles and plastic bottles to soft bag packaging. Soft bag packaging is highly safe and does not generate negative pressure during infusion or blood drawing, so it is loved by doctors and patients.

[0003] The welding interface used for infusion soft bags on the market is a "ship-shaped interface". The welding part is in the shape of a shuttle boat. The interface is large in size and high in material cost. The welding area is large and the filling hot melt process is complicated. The combination cover is a three-piece product, namely the outer cover, gasket and inner cover. The combination cover and the ship-shaped interface are sealed by welding. Hot melt welding is mostly used for welding. The welding disc has a thick wall for fusion bonding. The product is large in size and high in cost. The process is complex and inefficient, and the yield rate is reduced. Utility Model Content

[0004] The purpose of the utility model is to provide a combined joint for an infusion soft bag to solve the problems existing in the above-mentioned prior art, with compact structure, less materials, reduced plastic and carbon, small welding area, simple hot melting, simple, fast and efficient assembly, simple process and low energy consumption.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a combined joint for an infusion soft bag, comprising an interface body, a rubber pad and a cover body; the interface body comprises a cylindrical tube, a connecting tube and a rhombus tube that are fixedly connected in sequence, the cylindrical tube is connected with the connecting tube and the rhombus tube in sequence; an annular convex ridge is fixedly arranged on the inner wall of the cylindrical tube, and an annular supporting protrusion is arranged at one end of the cylindrical tube close to the connecting tube; the upper end of the rubber pad is truncated; a containing cavity is arranged inside the lower end of the cover body, an easy-to-fold handle is arranged on the outer top of the cover body, and an annular groove is arranged on the outer side wall of the lower end of the cover body; the containing cavity is fixedly arranged on the inner wall of the cylindrical tube, and an easy-to-fold handle is arranged on the outer top of the cover body, and an annular groove is arranged on the outer side wall of the lower end of the cover body; the containing cavity is fixedly arranged on the inner wall of the cylindrical tube, and an annular supporting protrusion is arranged at one end of the cylindrical tube close to the connecting tube; the upper end of the rubber pad is truncated; the lower end of the cover body is provided with a containing cavity, an easy-to-fold handle is arranged on the outer top of the cover body, and an annular groove is arranged on the outer side wall of the lower end of the cover body; the containing cavity is fixedly arranged on the inner wall of the cylindrical tube, and an annular supporting protrusion is arranged on the inner wall of the cylindrical tube ... The internal shape of the accommodating cavity matches the top shape of the rubber pad; and the outer diameter of the rubber pad is smaller than the inner diameter of the cylindrical tube and larger than the outer diameter of the annular supporting protrusion; the opening formed after the breakable handle is broken can make the accommodating cavity communicate with the outside world, and the inner diameter of the formed opening is smaller than the top outer diameter of the rubber pad; when the lower end of the cover body is embedded in the cylindrical tube, the annular convex ridge is clamped in the annular groove; and the accommodating cavity of the cover body is pressed against the top of the rubber pad; the maximum outer diameter of the cover body is the same as the outer diameter of the cylindrical tube.

[0007] Preferably, the top of the rubber pad is flat, and an inverted U-shaped connecting groove is provided inside the rubber pad, and the connecting groove is connected to the connecting tube; and a thin-wall puncture area is formed between the top of the connecting groove and the top of the rubber pad, and the thin-wall puncture area corresponds to the position of the easily foldable handle.

[0008] Preferably, one end of the foldable handle away from the axis of the cover body exceeds the outer edge of the cover body.

[0009] Preferably, the cover body is provided with a first crimping surface, which is used to contact the end face of the cylindrical tube away from the connecting tube, and at least one positioning protrusion is fixedly provided on the first crimping surface; a plurality of positioning grooves are provided at one end of the cylindrical tube away from the connecting tube; when the lower end of the cover body is embedded in the cylindrical tube, each of the positioning protrusions is respectively located in one of the positioning grooves.

[0010] Preferably, the interface body is made of modified polypropylene.

[0011] Preferably, the number of the positioning protrusions is 2, and the number of the positioning grooves is 4.

[0012] Preferably, the foldable handle is fixedly connected to the cover body via a connecting tube, and the cross-section of the internal cavity of the connecting tube is hexagonal.

[0013] Compared with the prior art, the utility model has achieved the following technical effects:

[0014] The combined joint of the infusion soft bag provided by the utility model adopts the same outer diameter combination of the cover body and the cylindrical tube, so the overall structure is simpler, and the joint is smoother and less protruding after splicing, which can avoid the cover body and the cylindrical tube from being separated due to the external force in the axial direction. The truncated cone structure of the rubber pad and the opening formed after the easy-to-break handle is broken are smaller than the outer diameter of the top of the rubber pad, which can ensure the sealing effect between the top of the rubber pad and the opening, and avoid liquid seepage. The boat-shaped structure of the traditional boat-shaped interface is changed to a diamond structure. , compact structure, 50% less material than the ship-type interface, reducing the use of plastics, reducing carbon emissions, and significantly reducing product costs; and the diamond-shaped welding area is small, hot melting is simple and convenient; the cylindrical tube cover is formed by a truncated cone-shaped rubber pad and a cover body, with a compact structure, without the inner cover and welding plate of the traditional three-piece combination cover, less material, simple, fast and efficient assembly, and low cost; after the medicine is filled, it can be directly pressed and installed on the cylindrical tube without hot melt welding, the process is simple, the energy consumption is low, the equipment investment is small, the bag making and filling production efficiency is improved, and the production cost is reduced.

[0015] Furthermore, the thin-wall puncture area provided on the rubber pad allows the user to puncture the rubber pad more easily.

[0016] Furthermore, the outer edge of the foldable handle protrudes from the outer edge of the cover body, so that the user can more easily bend the foldable handle.

[0017] Furthermore, the arrangement of the positioning protrusion and the positioning groove can ensure a stable connection between the cover body and the cylindrical tube, avoid circumferential rotation, and improve the sealing effect.

[0018] Furthermore, modified polypropylene raw materials are used, which can improve the heat sealing performance of soft bags and enhance the safety of drugs.

[0019] Furthermore, a matching mode of two positioning protrusions and four positioning grooves is adopted to facilitate faster positioning and matching.

[0020] Furthermore, the foldable handle adopts an internal hexagonal structure rather than a circular cavity structure, thereby ensuring that the thin-walled foldable part between the foldable handle and the cover body has a "reinforcement rib" structure, which can be quickly broken during use and ensure that the foldable handle can easily fall off if accidentally stressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the combined joint of the soft infusion bag provided by the utility model;

[0023] Figure 2 This is a structural schematic diagram of the interface body in the combined joint of the infusion soft bag provided by the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the rubber pad in the combined joint of the soft infusion bag provided by the utility model;

[0025] Figure 4 This is a structural schematic diagram of a cover body in a combined joint of an infusion soft bag provided by the utility model.

[0026] In the figure:

[0027] 1-interface body; 11-cylindrical tube; 111-annular convex ridge; 112-annular supporting protrusion; 12-connecting tube; 13-diamond tube; 14-positioning groove;

[0028] 2- rubber pad; 21- connecting groove;

[0029] 3-cover body; 31-accommodating cavity; 32-annular groove; 321-inverted conical surface; 33-easy-to-break handle; 34-first crimping surface; 35-connecting tube; 36-positioning protrusion. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The purpose of the utility model is to provide a combined joint for an infusion soft bag to solve the problems existing in the prior art, with compact structure, less materials, reduced plastic and carbon, small welding area, simple hot melting, simple, fast and efficient assembly, simple process and low energy consumption.

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Embodiment 1

[0034] This embodiment provides a combined connector for an infusion soft bag, such as Figure 1 to Figure 4 As shown, it includes an interface body 1, a rubber pad 2 and a cover body 3; the interface body 1 includes a cylindrical tube 11, a connecting tube 12 and a diamond tube 13 which are fixedly connected in sequence, and the cylindrical tube 11 is connected with the connecting tube 12 and the diamond tube 13 in sequence; an annular convex ridge 111 is fixedly provided on the inner wall of the cylindrical tube 11, and an annular supporting protrusion 112 is provided at one end of the cylindrical tube 11 close to the connecting tube 12; the upper end of the rubber pad 2 is truncated; an accommodating cavity 31 is provided inside the lower end of the cover body 3, an easily foldable handle 33 is provided on the outer top of the cover body 3, and an annular groove 32 is provided on the outer side wall of the lower end of the cover body 3; The internal shape of the accommodating cavity 31 matches the top shape of the rubber pad 2; and the outer diameter of the rubber pad 2 is smaller than the inner diameter of the cylindrical tube 11 and larger than the outer diameter of the annular supporting protrusion 112; the opening formed after the easily breakable handle 33 is broken off can connect the accommodating cavity 31 with the outside, and the inner diameter of the formed opening is smaller than the top outer diameter of the rubber pad 2; when the lower end of the cover body 3 is embedded in the cylindrical tube 11, the annular convex ridge 111 is clamped in the annular groove 32; and the accommodating cavity 31 of the cover body 3 is pressed against the top of the rubber pad 2; the maximum outer diameter of the cover body 3 is the same as the outer diameter of the cylindrical tube 11.

[0035] By adopting the same outer diameter combination of the cover body 3 and the cylindrical tube 11, the overall structure is simpler, and the joint after assembly is smoother and less protruding, which can avoid the cover body 3 and the cylindrical tube 11 being separated by the edge of the cover body 3 due to the external force in the axial direction; and the truncated cone structure of the rubber pad 2 and the opening formed after the easy-to-break handle 33 is broken off are smaller than the outer diameter of the top of the rubber pad 2. Both can ensure the sealing effect between the top of the rubber pad 2 and the opening to avoid liquid seepage; and the traditional boat-shaped structure of the boat-shaped interface is changed to a diamond structure, which is compact in structure, The material consumption is 50% less than that of the ship-type interface, which reduces the use of plastics, reduces carbon emissions, and greatly reduces product costs. The diamond-shaped welding area is small, and hot melting is simple and convenient. The cover of the cylindrical tube 11 is formed by a truncated cone-shaped rubber pad 2 and a cover body 3, which has a compact structure and does not have the inner cover and welding plate of the traditional three-piece combination cover. It uses less material, is simple, fast and efficient to assemble, and has low cost. After the medicine is filled, it can be directly pressed and installed on the cylindrical tube 11 without hot melt welding. The process is simple, the energy consumption is low, and the equipment investment is small, which improves the bag making and filling production efficiency and reduces production costs.

[0036] Among them, regarding the structure of the interface body 1:

[0037] In the optional scheme of this embodiment, it is more preferred that the interface body 1 is made of modified polypropylene raw material. The modified polypropylene raw material (high melt index MI16 polypropylene modified by EMBS plastic rubber) can improve the heat sealing performance of the soft bag and improve the safety of the medicine. The latest hot runner high cavity mold is used for injection molding, which has fast molding efficiency and high yield rate.

[0038] Specifically, the cylindrical tube 11 is a cylindrical tubular structure; the connecting tube 12 is a conical tubular structure with relatively flat two sides; and the interior of the rhombus tube 13 is a rhombus through hole.

[0039] Specifically, the inner walls of the cylindrical tube 11 , the connecting tube 12 and the diamond-shaped tube 13 of the interface body 1 are smoothly connected, which will not affect the filling speed.

[0040] Among them, about the structure of rubber pad 2:

[0041] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Figure 3 As shown, the top of the rubber pad 2 is flat, and an inverted U-shaped connecting groove 21 is provided inside the rubber pad 2, and the connecting groove 21 is connected to the connecting tube 12; and a thin-wall puncture area is formed between the top of the connecting groove 21 and the top of the rubber pad 2, and the thin-wall puncture area corresponds to the position of the easy-to-break handle 33. The thin-wall puncture area provided on the rubber pad 2 is convenient for the user to puncture and use more easily.

[0042] Specifically, the rubber pad 2 is embedded in the accommodating cavity 31 of the cover body 3 , and due to the elasticity of the rubber pad 2 , the rubber pad 2 can be embedded in the accommodating cavity 31 of the cover body 3 without falling off.

[0043] Specifically, the rubber pad 2 is a structure with a cylindrical lower end and a truncated cone upper end, and the outer diameter of the top plane of the truncated cone is larger than the inner diameter of the opening formed on the cover body 3 after the easy-to-break handle 33 is broken off.

[0044] Among them, regarding the structure of the cover 3:

[0045] In the optional scheme of this embodiment, it is more preferred that the cover body 3 is provided with a first crimping surface 34, which is used to contact the end surface of the cylindrical tube 11 away from the connecting tube 12, and at least one positioning protrusion 36 is fixed on the first crimping surface 34; the end of the cylindrical tube 11 away from the connecting tube 12 is provided with a plurality of positioning grooves 14; when the lower end of the cover body 3 is embedded in the cylindrical tube 11, each positioning protrusion 36 is respectively located in a positioning groove 14. The arrangement of the positioning protrusion 36 and the positioning groove 14 can ensure a stable connection between the cover body 3 and the cylindrical tube 11, avoid circumferential rotation, and improve the sealing effect.

[0046] Specifically, each positioning protrusion 36 does not protrude beyond the outer edge of the first crimping surface 34 in the axial direction away from the cover body 3 .

[0047] Specifically, the outer side wall of the annular ridge 111 provided on the cover body 3 is an inverted conical surface 321 , and the inner bottom of the cylindrical tube 11 of the interface body 1 is provided with an accommodating groove matching the shape of the lower end of the cover body 3 .

[0048] Specifically, the annular support protrusion 112 provided at the bottom of the cylindrical tube 11 of the interface body 1 can squeeze the rubber pad 2 toward one end close to the cover body 3, thereby ensuring that the upper end surface of the rubber pad 2 is tightly sealed against the inner wall of the accommodating cavity 31 of the cover body 3.

[0049] Specifically, the arrangement of the positioning protrusion 36 and the positioning groove 14 can ensure that the cover body 3 and the interface body 1 are smoothly installed in place, the seal is tight and does not leak, and at the same time provide a basis for misalignment removal for visual quality control inspection.

[0050] In the optional solution of this embodiment, it is more preferred that the number of the positioning protrusions 36 is 2 and the number of the positioning grooves 14 is 4. The matching mode of two positioning protrusions 36 and four positioning grooves 14 is adopted to facilitate faster positioning and matching.

[0051] Specifically, the two positioning protrusions 36 are located opposite to each other, and every two positioning grooves 14 among the four positioning grooves 14 are arranged opposite to each other.

[0052] Specifically, a guide surface may be provided at one end of the positioning protrusion 36 that enters the positioning groove 14 , so as to facilitate the positioning protrusion 36 to enter the positioning groove 14 more smoothly.

[0053] In the optional solution of this embodiment, it is more preferred that the foldable handle 33 is fixedly connected to the cover body 3 through the connecting tube 35, and the internal cavity cross section of the connecting tube 35 is hexagonal. The foldable handle 33 adopts an internal hexagonal structure instead of a circular cavity structure, so as to ensure that the thin-walled foldable part between the foldable handle 33 and the cover body 3 has a "reinforcement rib" structure, which can be quickly broken when in use, and can ensure that the foldable handle 33 can be easily detached when accidentally stressed.

[0054] Specifically, the opening formed on the cover body 3 after the easy-to-break handle 33 is broken off is the medicine through hole. After the easy-to-break handle 33 is broken off, the medicine can be punctured and injected, and the operation is quick and easy.

[0055] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, one end of the foldable handle 33 away from the axis of the cover body 3 exceeds the outer edge of the cover body 3. The outer edge of the foldable handle 33 protrudes from the outer edge of the cover body 3, so that the user can easily bend the foldable handle 33.

[0056] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A combined connector for an infusion soft bag, characterized in that: It includes an interface body, a rubber pad and a cover body; The interface body comprises a cylindrical tube, a connecting tube and a rhombus tube which are fixedly connected in sequence, and the cylindrical tube is connected with the connecting tube and the rhombus tube in sequence; an annular convex ridge is fixedly provided on the inner wall of the cylindrical tube, and an annular supporting protrusion is provided at one end of the cylindrical tube close to the connecting tube; The upper end of the rubber pad is in a truncated cone shape; A receiving cavity is provided inside the lower end of the cover body, an easily foldable handle is provided on the top of the outer side of the cover body, and an annular groove is provided on the outer side wall of the lower end of the cover body; The inner shape of the accommodating cavity matches the top shape of the rubber pad; and the outer diameter of the rubber pad is smaller than the inner diameter of the cylindrical tube and larger than the outer diameter of the annular supporting protrusion; The opening formed after the breakable handle is broken off can make the accommodating cavity communicate with the outside, and the inner diameter of the formed opening is smaller than the outer diameter of the top of the rubber pad; When the lower end of the cover body is embedded in the cylindrical tube, the annular ridge is clamped in the annular groove; and the accommodating cavity of the cover body is pressed against the top of the rubber pad; The maximum outer diameter of the cover body is the same as the outer diameter of the cylindrical tube.

2. The combined connector of the soft infusion bag according to claim 1, characterized in that: The top of the rubber pad is flat, and an inverted U-shaped connecting groove is provided inside the rubber pad, and the connecting groove is connected to the connecting tube; and a thin-wall puncture area is formed between the top of the connecting groove and the top of the rubber pad, and the thin-wall puncture area corresponds to the position of the easily foldable handle.

3. The combined connector of the infusion soft bag according to claim 1, characterized in that: One end of the foldable handle away from the axis of the cover body exceeds the outer edge of the cover body.

4. The combined connector of the soft infusion bag according to claim 1, characterized in that: The cover body is provided with a first crimping surface, the first crimping surface is used to contact the end surface of the cylindrical tube away from the connecting tube, and at least one positioning protrusion is fixedly provided on the first crimping surface; A plurality of positioning grooves are formed at one end of the cylindrical tube away from the connecting tube; When the lower end of the cover body is embedded in the cylindrical tube, each of the positioning protrusions is located in one of the positioning grooves.

5. The combined connector of the soft infusion bag according to claim 1, characterized in that: The interface body is made of modified polypropylene.

6. The combined connector of the soft infusion bag according to claim 4, characterized in that: The number of the positioning protrusions is 2, and the number of the positioning grooves is 4.

7. The combined connector of the soft infusion bag according to claim 1, characterized in that: The foldable handle is fixedly connected to the cover body via a connecting tube, and the cross section of the internal cavity of the connecting tube is hexagonal.

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