WO2013078806A1

WO2013078806A1 - Single-plug and double-valve combined sealing cover

Info

Publication number: WO2013078806A1
Application number: PCT/CN2012/073443
Authority: WO
Inventors: 邓茂林; 谭鸿波; 朱仲强
Original assignee: 四川科伦药业股份有限公司
Priority date: 2011-12-01
Filing date: 2012-03-31
Publication date: 2013-06-06
Also published as: CN102366348A

Abstract

Disclosed is a combined sealing cover, especially a single-plug and double-valve combined sealing cover belonging to the field of medical packaging. The single-plug and double-valve combined sealing cover comprises a cover body (1) and a rubber plug (2), wherein the cover body (1) is axially provided with a transfusion needle insertion blind hole (3) and a rubber plug mounting hole (4), respectively, and the rubber plug (2) is fixedly set in the rubber plug mounting hole (4). The combined sealing cover has low production costs and is provided with separated transfusion and dosing channels so that hole leakage and lateral leakage of a plastic container do not easily occur during use, and the scenarios of puncturing and the plug falling will not occur either.

Description

Single plug double valve combined sealing cover

Technical field

The invention relates to a combined sealing cover, in particular to a single plug double valve combined sealing cover, belonging to the field of medical packaging.

Background technique

At present, the plastic containers used in the pharmaceutical industry include plastic bottles, plastic bags, etc., and are often sealed by a combination welded cover, which can be mainly divided into a single plug sealing cover and a double plug double valve cover. The above sealing cover is basically composed of an inner cover, a film and The outer cover is made up of three parts. In order to facilitate the use of the hospital, the outer cover is designed to have a fragile structure, but the mechanism is prone to cause poor sealing, resulting in the risk of contamination of the liquid or the use of the liquid; the sealing cover uses a large film, the film is used in a large amount, and the hole leakage and side leakage are prone to occur. And the film puncture and other problems; the double bonnet uses two independent holes, two films, the amount of film is also large. The above two kinds of sealing caps have high film cost, which increases the product cost to a certain extent, and is also prone to hole leakage, side leakage and insufficient sealing safety guarantee. The puncture and chipping will make the patient and the family mistakenly think that it is a foreign matter in the liquid medicine. It will lead to serious medical and patient disputes, which will affect the doctor-patient relationship. At present, some small-caliber bottlenecks and corresponding welded sealing covers have been disclosed on the market. Although the use of plastics and films has been effectively reduced, the use of film is still large, and the residual amount of liquid medicine is also large, and is currently used by the large infusion industry. Most of the equipment is suitable for large neck bottles. If the equipment is replaced, it will inevitably bring a large investment. After the bottleneck becomes smaller, it will also cause inconvenience in clinical use. At the same time, the welded sealing cap disclosed or currently used, when the infusion needle is inserted, the volume of the inserted liquid below the pinhole is large, which is bound to cause a large residual amount of the liquid.

technical problem

The technical problem to be solved by the invention is that it provides a low production cost, and the infusion and dosing channels are separated, so that the plastic container is less prone to pore leakage, side leakage, and no puncture or slumping during use. Single plug double valve combination sealing cover.

Technical solution

The technical solution adopted to solve the above technical problem is: a single plug and double valve combined sealing cover, comprising a cover body and a rubber plug, and an infusion needle insertion blind hole and a rubber plug are respectively arranged on the cover body in the axial direction. The hole and the rubber plug are fixedly installed in the rubber plug mounting hole.

Further, it further comprises a plug film, the rubber plug mounting hole is a blind hole closed away from one end of the cover body, and the rubber plug is fixedly installed in the rubber plug mounting hole through a plug film mounted on the opening end of the rubber plug mounting hole.

Preferably, the above-described solution is that the plug film is welded to the open end of the plug mounting hole.

Further, the rubber plug is a large and small tapered structure, and the small end of the tapered rubber plug has a radial groove; the rubber plug mounting hole is a tapered shape matching the shape of the tapered rubber plug. a through hole having a boss at a small end of the tapered through hole adapted to the groove; a small end of the tapered rubber plug passing through the tapered through hole and fixed to the rubber plug mounting hole through the groove and the boss Inside.

Further, the infusion needle insertion blind hole comprises a guiding base hole section, a fixed cone hole section and a sealing cone head section, the guiding base hole section is connected with the cover body, and the sealing cone head section and the guiding base hole section are connected by the fixed cone hole section. For a whole.

Further, the guiding base hole segment is also a tapered hole whose taper is smaller than the taper of the fixed tapered hole segment.

Further, the thickness of the hole wall of the guide base hole section is larger than the thickness of the hole wall of the fixed taper hole section, and the thickness of the hole wall of the fixed taper hole section is larger than the thickness of the cone wall of the sealing cone section.

Further, the cover body has a circular cross section, and has an upper cover cavity extending in the axial direction on the end surface thereof, and the upper cover cavity has an elliptical cross section; the infusion needle is inserted into the blind hole and The rubber plug mounting hole is located in the upper cover cavity and is connected to the cover body through the end surface and the side wall of the upper cover cavity.

Further, on the cover body, the end surface on the side opposite to the cavity of the upper cover body has an axially extending welding body, and the outer surface of the welding body is provided with a welding protrusion, and the height of the welding protrusion is 1.5. ~2.5mm.

Further, it further comprises a cover sheet composed of a left seal section and a right seal section, the left seal section of the cover sheet covers the infusion needle insertion blind hole, and the right seal section of the cover sheet covers the rubber plug mounting hole. The perimeters of the left seal segment cover sheet and the right seal segment cover sheet are respectively welded to the corresponding outer sidewalls of the upper cover body cavity.

Beneficial effect

The beneficial effects of the present invention are: by providing two holes on the cover body, one for the infusion needle to be inserted into the blind hole and the other for the rubber plug mounting hole, and then the sealing rubber plug is fixedly installed into the rubber plug mounting hole. When in use, the infusion needle is inserted into the blind hole by piercing the infusion needle, and is fixed in the blind hole of the infusion needle to realize infusion; the medicine needle is inserted into the plastic container through the puncture rubber plug and the rubber plug mounting hole, Therefore, the insertion position of the infusion needle is separated from the insertion position of the medicated needle, so that the rubber stopper can be used only in the rubber plug installation hole, thereby greatly reducing the usage of the rubber stopper and achieving the purpose of effectively reducing the production cost. . At the same time, since the insertion position of the infusion needle is separated from the insertion position of the medicated needle, the thick plastic infusion needle is connected to the cover body through the infusion needle insertion blind hole, and the medicated needle that needs multiple punctures for multiple times is passed. The rubber plug fixed in the rubber plug mounting hole realizes multiple punctures, thereby effectively avoiding the leakage, side leakage, and puncture of the plastic container during use.

DRAWINGS

Figure 1 is a cross-sectional view showing a single plug double valve combination sealing cover of the present invention;

Figure 2 is a top three-dimensional view of Figure 1;

Figure 3 is a three-dimensional view of the bottom view of Figure 1;

4 is a cross-sectional view showing another structural single-plug double valve combination sealing cover of the invention;

The figure is marked as: cover body l, rubber plug 2, groove 2l, infusion needle insertion blind hole 3, guide base hole section 31, fixed cone hole section 32, sealing cone head section 33, rubber plug mounting hole 4, convex The table 41, the plug film 5, the upper cover cavity 6, the end face 61, the side wall 62, the welding projection 7, the cover sheet 8, the left sealing section 81, the right sealing section 82, and the welding body 9.

Embodiments of the invention

As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the invention provides a low production cost, and the infusion and dosing channels are separated, so that the plastic container is less prone to pore leakage and side leakage during use. A single-plug, double-valve combination seal cap that does not puncture the plug condition. The combined sealing cover comprises a cover body 1 and a rubber plug 2, and the cover body 1 is respectively provided with an infusion needle insertion blind hole 3 and a rubber plug mounting hole 4 in the axial direction, and the rubber plug 2 is fixedly mounted on the rubber plug mounting hole 4 Inside. After the combination sealing cover of the above structure is used, the infusion needle is inserted into the blind hole 3 by piercing the infusion needle, and is fixed in the infusion needle insertion blind hole 3 to realize infusion; the dosing needle passes through the puncture rubber stopper 2 and the glue The plug mounting hole 4 is configured to add a drug to the plastic container, thereby separating the insertion position of the infusion needle from the insertion position of the medicated needle, so that the rubber stopper 2 can be used only in the rubber plug mounting hole 4, thereby greatly reducing The use amount of the rubber stopper 2 achieves the purpose of effectively reducing the production cost. At the same time, since the insertion position of the infusion needle is separated from the insertion position of the dosing needle, the thick plastic infusion needle is connected to the cover body 1 through the infusion needle insertion blind hole 3, and the dosing which requires multiple punctures for multiple times is required. The needle is inserted through the rubber plug 2 fixed in the rubber plug mounting hole 4 to achieve multiple punctures, thereby effectively avoiding the leakage, side leakage, and puncture of the plastic container during use.

In order to ensure that the rubber plug does not puncture the plug during the multiple puncture of the dosing needle, that is, in order to ensure the stability and reliability of the rubber plug, the present invention provides two kinds of fixing the rubber plug 2 into the rubber plug mounting hole 4 The structural form. In the above structure, the pressure-seal film 5 is further included, and the rubber plug mounting hole 4 is a blind hole closed away from one end of the cover body 1. The rubber plug 2 is fixedly mounted by the plug film 5 installed at the opening end of the rubber plug mounting hole. In the rubber plug mounting hole 4; at the same time, the plug film 5 is welded to the open end of the rubber plug mounting hole 4. Of course, the connection manner of the tampon film 5 and the open end of the rubber plug mounting hole 4 may also be a snap-fit form or a screw connection form. Another structure is that the rubber plug 2 is a tapered structure with a large upper and lower sides, and the small end of the tapered rubber plug 2 has a groove 21 in the radial direction; the rubber plug mounting hole 4 is opposite to the cone The rubber plug 2 has a shape-shaped tapered through hole having a boss 41 adapted to the groove 21 at a small end of the tapered through hole; the small end of the tapered rubber plug 2 passes through the tapered through hole And fixed in the rubber plug mounting hole 4 through the groove 21 and the boss 41. Regardless of which of the above structures is used, the rubber stopper 2 can be securely fixed in the rubber plug mounting hole 4, so that the rubber stopper 2 does not fall off during the puncture of the medicated needle multiple times, because The pre-pressure of the rubber plug 2 in the rubber plug mounting hole 4 is large, and side leakage, hole leakage and the like do not occur.

In the above embodiment, in order to ensure the convenient puncture of the plastic infusion needle and the stable fixation after the puncture is completed, the infusion needle insertion blind hole 3 includes a guiding base hole section 31, a fixed cone hole section 32 and a sealing cone head section 33, and the guiding base hole The segment 31 is connected to the cover body 1. The sealing cone segment 33 and the guiding base hole segment 31 are integrally connected by the fixed cone hole segment 32. The guiding base hole segment 31 is also a tapered hole, and the taper is smaller than the fixed tapered hole segment 32. The taper; the thickness of the hole wall of the guide base hole section 31 is larger than the thickness of the hole wall of the fixed taper hole section 32, and the thickness of the hole wall of the fixed taper hole section 32 is larger than the thickness of the taper wall of the seal cone head section 33. Since the infusion needle insertion blind hole 3 is composed of three segments, the guide base hole segment 31 connected to the cover body l has a thick wall thickness, a small taper of the hole, and a loose fitting with the plastic infusion needle, which can play a good guiding role. Therefore, the puncture is very convenient, and of course, the guiding base hole segment 31 can also be a straight hole of equal diameter. The fixed cone hole section 32 in the middle has a thin wall thickness and a large taper, and the plastic infusion needle is tightly fitted, and the plastic infusion needle can be securely fixed in the infusion needle insertion blind hole 3, which is achieved in the prior art. The same sealing and pinching effect of the rubber plug does not require any film. In addition, since the wall thickness of the fixed taper hole section 32 is thin, elastic deformation is easy to occur, and the dimensional change of the plastic infusion needle can be overcome to make the combined sealing cover of the present invention. It can be adapted to plastic infusion needles of different diameters. The sealing cone head section 33 at the front end closes one end of the infusion needle insertion blind hole 3 to form a blind hole structure, and can ensure the sealing effect of the liquid well when used at the end, and the plastic infusion needle can be automatically used when in use. Inserted from the middle of the hole, and the wall thickness is thinner, and the piercing is easier.

In order to reduce the residual of the liquid medicine at the end of the infusion, the cover body 1 has a circular cross section, and has an upper cover cavity 6 extending in the axial direction on the end surface thereof, and the upper cover cavity 6 has an elliptical cross section. The infusion needle insertion blind hole 3 and the rubber plug mounting hole 4 are located in the upper cover cavity 6 and are connected to the cover 1 through the end surface 61 and the side wall 62 of the upper cover cavity 6. Due to the elliptical upper cover cavity 6, the portion of the plastic infusion needle that is inserted into the immersion liquid is placed in the cavity 6 with a small oval, so that the residual amount of the chemical liquid is reduced to an extremely low level.

In order to facilitate the connection of the combined sealing cover of the present invention to the plastic container, the end surface of the cover body 1 opposite to the upper cover cavity 6 has an axially extending welding body 9 on the outer end surface of the welding body 9. A solder bump 7 is provided thereon, and the height of the solder bump 7 is 1.5 to 2.5 mm. Since the height of the welding protrusion 7 is small, the use amount of the material of the cover body 1 is greatly reduced, and at the same time, the non-welding surface of the upper portion is not affected by the welding heating, causing significant deformation or damage. It also facilitates the good melting of the welded surface when heated.

In order to ensure the cleaning and sterility requirements of the combined closure of the present invention during storage and transportation, the above structure also includes a cover sheet 8 composed of a left seal segment 81 and a right seal segment 82, the left seal segment 81 of the cover sheet 8 being covered On the infusion needle insertion blind hole 3, the right sealing segment 82 of the cover sheet 8 covers the rubber plug mounting hole 4, and the periphery of the left sealing segment cover sheet and the right sealing segment cover sheet respectively and the upper cover cavity The corresponding outer side wall of 6 is welded. Thus, in clinical use, if dosing is required, the right sealing section 82 of the cover sheet 8 can be torn to add medicine. If no medicine is needed, the right sealing section 82 of the cover sheet need not be torn, thereby maintaining the liquid medicine container. If the infusion is performed, the left sealing section 8l of the cover sheet 8 is torn open, and the plastic infusion needle is forcibly inserted into the infusion needle insertion blind hole 3, and the special two-stage hole with different taper is adopted when piercing. It is closely matched with the plastic infusion needle to prevent the liquid from leaking intermittently. In order to facilitate clinical use, the outer surface of the upper cover cavity 6 on the outside of the two holes has obvious concave arrows, which are used as a flow direction mark for the medical workers to effectively prevent errors.

Claims

The utility model relates to a single plug double valve combined sealing cover, comprising a cover body (1) and a rubber plug (2), characterized in that: an infusion needle insertion blind hole (3) is respectively arranged on the cover body (1) in the axial direction and A rubber plug mounting hole (4), the rubber plug (2) is fixedly installed in the rubber plug mounting hole (4).

2 . The single plug double valve combined sealing cover according to claim 1 , further comprising a plug film ( 5 ), wherein the rubber plug mounting hole ( 4 ) is closed at an end away from the cover body ( 1 ). The blind hole, the rubber plug (2) is fixedly installed in the rubber plug mounting hole (4) through a plug film (5) installed at the opening end of the rubber plug mounting hole.

3. A single plug double valve combination sealing cover according to claim 2, wherein said tamping film (5) is welded to the open end of the rubber plug mounting hole (1).

4. The single plug double valve combination sealing cover according to claim 1, wherein the rubber plug (2) is a large and small tapered structure, and the small end of the tapered rubber plug (2) has a radial groove (21); the rubber plug mounting hole (4) is a tapered through hole adapted to the shape of the tapered rubber plug (2), having a small end at the tapered through hole a groove (21) adapted to the boss (41); the small end of the tapered rubber plug (2) passes through the tapered through hole, and is fixed to the rubber plug mounting hole through the groove (21) and the boss (41) (4) inside.

5. A single plug double valve combination sealing cover according to claim 1, wherein said infusion needle insertion blind hole (3) comprises a guiding base hole section (31), a fixed cone hole section (32), and The sealing cone head section (33), the guiding base hole section (31) is connected with the cover body (1), and the sealing cone head section (33) and the guiding base hole section (31) are connected as a whole through the fixed cone hole section (32). .

6. The single-plug double-valve combination sealing cover according to claim 5, wherein the guiding base hole section (31) is also a tapered hole whose taper is smaller than the taper of the fixed tapered hole section (32).

7. A single plug double valve combination sealing cover according to claim 5, wherein the thickness of the hole wall of the guiding base hole section (31) is greater than the thickness of the hole wall of the fixed taper hole section (32), The thickness of the hole wall of the fixed cone section (32) is greater than the thickness of the cone wall of the sealing cone section (33).

8. A single plug double valve combination sealing cover according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the cover body (1) has a circular cross section on its end face The upper cover cavity (6) extending in the axial direction, the upper cover cavity (6) has an elliptical cross section; the infusion needle insertion blind hole (3) and the rubber plug mounting hole (4) are located The upper cover cavity (6) is connected to the cover body (1) through the end surface (61) and the side wall (62) of the upper cover cavity (6).

9. A single plug double valve combination sealing cover according to claim 8, wherein said cover body (1) has an axial end face on an end surface opposite to the upper cover body cavity (6) To the extended welding body (9), a welding projection (7) is provided on the outer end surface of the welding body (9), and the height of the welding projection (7) is 1.5 to 2.5 mm.

10. A single plug double valve combination sealing cover according to claim 8, further comprising a cover sheet (8) consisting of a left sealing section (81) and a right sealing section (82), covering sheets (8) The left sealing section (81) covers the infusion needle insertion blind hole (3), and the right sealing section (82) of the cover sheet (8) covers the rubber plug mounting hole (4), the left sealing section The perimeter of the cover sheet and the right seal segment cover are respectively welded to the respective outer sidewalls of the upper cover cavity (6).