KR20130138023A - Sealing cap cnnected to injection port for infusion solution pack - Google Patents

Abstract

The present invention relates to an inlet port sealing cap for an infusion pack. The presented an inlet port sealing cap for an infusion pack is installed at inlet of an infusion pack and comprises: an inside case inserted in the inlet of the infusion pack; a sealing member arranged to closely adhere to the inside case; and an outside cover combining the inside case with the sealing member made up of thermoplastic elastomer (TPE) material.

Description

SEALING CAP CNNECTED TO INJECTION PORT FOR INFUSION SOLUTION PACK}

The present invention relates to an inlet sealing cap for an infusion pack, and more particularly, to a sealing cap installed in an inlet of a medical infusion pack.

In general, sap packs are used to store fluids such as physiological saline, nutrients such as glucose and distilled water, and keep them airtight while being blocked from the outside. An injection hole is installed at one side of the infusion pack, and a sealing cap is installed at the injection hole so that an injection needle can be inserted to extract the fluid.

Therefore, when supplying the fluid in the infusion pack to the patient, the injection needle of the infusion set is inserted into the sealing cap coupled to the inlet and then injected into the patient through the medical tube.

The inlet sealing cap for a conventional sap pack is disclosed in the registration room 20-0335360. The disclosed sealing cap is provided with an inner case inserted into the infusion pack for the sap pack, a sealing rubber disposed to be in close contact with the upper surface of the inner case, and the inner case and the sealing rubber are installed around the sealing rubber so as not to be separated from the inner case. It consists of an outer case to combine the sealing rubber and the inner case.

Since the sealing rubber of the inlet seal cap for the conventional infusion pack is made of IR (Isoprene Rubber), it is toxic, and it is highly likely that debris is generated when the infusion set is inserted, thereby adversely affecting the human body. In addition, due to the high change over time, hardening occurs at a very high rate over time, causing problems in storage, and it is difficult to shape in the manufacturing process. In particular, since it is not recycled, a lot of material costs are required in the production of the sealing rubber, and the sealing rubber of the used sealing cap becomes an industrial waste, causing environmental pollution.

The present invention has been made to solve the above-mentioned conventional problems, and is aimed at providing an inlet sealing cap for an infusion pack that is harmless to the human body and is easy to manufacture and which can reduce manufacturing costs.

Infusion cap sealing cap for the sap pack of the present invention for achieving the above object, the sealing cap is installed in the inlet of the sap pack, the inner case is inserted into the inlet of the sap pack; A sealing member disposed to be in close contact with an upper end of the inner case; And an outer cover for coupling the inner case and the sealing member to each other, wherein the sealing member is made of a thermoplastic elastomer (TPE) material.

A first concave portion formed in a lower direction is formed in the center of the upper surface of the sealing member, a protruding ring portion is formed around the first concave portion, and a center portion of the lower surface of the sealing member is formed to protrude from the lower edge of the sealing member. A ring-shaped insertion groove may be formed between the center portion and the lower edge portion, and the second recessed portion formed in the upper direction may be formed in the lower portion center portion.

The inner case is. An inner cylindrical portion inserted into the insertion groove so that an upper portion surrounds an outer circumferential surface of the central portion of the lower surface; It extends upwardly from the inner cylindrical portion, and includes an outer cylindrical portion surrounding the side of the sealing member, it can be configured to form a space spaced from each other between the inner cylindrical portion and the outer cylindrical portion.

The sealing member may be formed of a mixture of SBS (Styrene Ethylene Butadiene Styrene) and TPV (Thermoplastic Vulcanization) or SBS (Styrene Ethylene Butadiene Styrene) in the thermoplastic elastomer (TPE).

The mixture of SEBS and TPV is preferred that the SEBS is greater than 0% and within 30% of the total weight.

According to the above, since the sealing member is made of a thermoplastic elastomer, it can be easily molded even with a conventional plastic processing machine, thereby simplifying the manufacturing process and shortening the manufacturing process time, thereby improving productivity. have.

Since the sealing member is made of thermoplastic elastomer and can be recycled, the material cost can be reduced by collecting and reusing the used sealing member, thereby lowering the product cost of the overall sealing cap and reducing the amount of industrial waste. Therefore, by preventing environmental pollution, it can greatly contribute to the global environmental protection.

In addition, the thermoplastic elastomer sealing member is non-toxic compared to the conventional rubber sealing member, and is less harmful to the patient by reducing the occurrence of debris when inserting the infusion set, it can be applied to the inlet sealing cap for the sap pack applied to the patient with confidence. It has an effect.

In addition, since the sealing member of the thermoplastic elastomer material with a small change over time has a low curing rate with time has an effect that can be used to store the sealing cap for a long time.

In addition, since the inner cylindrical portion and the outer cylindrical portion is formed in the shape so that the space is formed in the inner case can reduce the material cost as much as the space, there is an effect that can reduce the product cost of the overall sealing cap.

1 is an exploded perspective view showing the inlet sealing cap for the sap pack according to an embodiment of the present invention,
Figure 2 is a cross-sectional view showing the inlet sealing cap for the sap pack according to an embodiment of the present invention.

Hereinafter, with reference to the drawings, the inlet sealing cap for the sap pack according to an embodiment of the present invention.

1 and 2, the inlet sealing cap for the sap pack includes an inner case 10, the sealing member 20, the outer cover 30.

The inner case 10 includes an inner cylindrical portion 11 having an upper portion extended from the lower portion, and an outer cylindrical portion 12 extending upward from an outer circumferential surface of the inner cylindrical portion 11.

The outer cylindrical portion 12 is composed of an inclined portion 12a extending upwardly from the outer peripheral surface near the center of the inner cylindrical portion 11 and a straight portion 12b extending upwardly from the end of the inclined portion 12a. do. The end of the straight portion 12b is formed higher than the upper end of the inner cylindrical portion 11, the space between the upper portion of the inner cylindrical portion 11 and the outer cylindrical portion 12 is spaced apart from each other, the upper opening (S) ) Is formed. A projection 12c is formed below the straight portion 12b of the outer cylindrical portion 12. The inner case 10 is formed of a plastic-based synthetic resin as in a conventional sealing cap and manufactured by injection molding. In this case, the inner case 10 can reduce the material as much as the space (S), thereby reducing the manufacturing cost required for the inner case 10 in manufacturing.

The sealing member 20 is disposed to closely contact the upper end of the inner case 10. In the center of the upper surface of the sealing member 20, a first concave portion 21 having a downward shape is formed, and a ring portion 22 protruding in a circular ring shape is formed around the first concave portion 21.

The lower surface center portion 23a of the sealing member 20 is formed to protrude more than the lower surface edge portion 23b, and a circular ring-shaped insertion groove 24 is formed between the lower surface center portion 23a and the lower surface edge portion 23b. . In addition, a second concave portion 25 is formed in the lower surface center portion 23a in the upward direction.

When the sealing member 20 is placed on the upper end of the inner case 10 and an external force is applied downward, the upper end of the inner cylindrical portion 11 is fitted into the insertion groove 24, so that the upper portion of the inner circumferential surface of the inner cylindrical portion 11 is closed. The outer circumferential surface of the lower surface center portion 23a is wrapped and in close contact with each other, and the side surface of the sealing member 20 is in close contact with the inner circumferential surface of the straight portion 12b of the outer cylindrical portion 12. In this case, when the sealing member 20 is coupled to the inner case 10, the space (S) of which the top is open is completely closed.

The sealing member 20 according to the present embodiment is made of a thermoplastic elastomer (TPE) material. Conventional rubbers require large machines or large amounts of energy in the process of making products. However, thermoplastic elastomers exhibit the properties of vulcanized rubber at room temperature, but are thermoplasticized at high temperatures, and thus are easily formed into ordinary thermoplastic processing machines.

Rubber mixes many compounding agents (fillers, anti-aging agents, plasticizers, crosslinking agents) with the raw material polymer, and crosslinks (vulcanizes) to form a molded article. The molecular structure has a crosslinking point in the molecule and has a three-dimensional network structure (net), so that the fluidity of the material can be prevented. Therefore, even if it is pressurized to a high temperature, since the molecules do not flow, it is difficult to change into heat. In other words, reshaping is not straightforward and is not suitable in terms of recycling of materials.

In contrast, thermoplastic elastomers are melted into a molded article according to injection molding in the same manner as plastic molding. In general, there is no crosslinking (linking portion) in the molecule, and the plastic deformation occurs when pressurized at a high temperature by only preventing the molecule from flowing in a restricted state according to the molecular group of the hard layer in the molecule. It is therefore possible to reshape, as opposed to rubber, to reduce energy and resources in conjunction with the simplification of the molding process.

In addition, thermoplastic elastomers are non-toxic compared to conventional rubbers, and have a very low property with respect to conventional rubbers.

The outer cover 30 is coupled to surround the inner case 10 and the sealing member 20. The outer cover 30 is coupled to the inner case 10 by pushing the sealing member 20 downward, and then placed in a mold, and then insert injection molded. The outer cover 30 is formed to surround a portion of the upper surface of the straight portion 12b and the sealing member 20. In this case, the outer cover 30 completely surrounds the lower surface of the protrusion 12c and is molded to expose the first concave portion 21 and the ring portion 22 of the sealing member 20 to the outside.

As described above, since the sealing member 20 of the present embodiment is formed of a thermoplastic elastomer, compared to a sealing member made of a conventional rubber material, the sealing member 20 can be easily molded even with a processing machine of a conventional thermoplastic plastic, thereby simplifying manufacturing. The manufacturing process time can be shortened. In addition, the material cost of the sealing cap can be lowered because it can be recycled, and the cost of the sealing cap can be lowered, and the amount of industrial waste that is discarded is reduced, which is very useful in terms of preventing environmental pollution.

The sealing member 20 of the present embodiment is non-toxic to the patient because it is non-toxic as compared to the conventional sealing member of rubber material, and because the change over time is small, there is an effect that can be stored for a long time even in the storage of the sealing cap.

Since the inner case 10 of the present embodiment is injection molded so that the space S is formed between the inner cylindrical portion 11 and the outer cylindrical portion 12, it is possible to save material as much as the space S, thereby reducing the material cost. It can reduce, and accordingly, there is an effect that can lower the product cost of the overall sealing cap.

In the sealing member 20 and the inner case 10 of the present embodiment, the upper end of the inner cylindrical portion 11 is fitted into the insertion groove 24 of the sealing portion 20, and the upper portion of the inner circumferential surface of the inner cylindrical portion 11 has a lower center portion. The outer circumferential surface of 23a is enclosed in close contact with each other, and the side surface of the sealing member 20 is configured to enclose and close in contact with the inner circumferential surface of the straight portion 12b of the outer cylindrical portion 12. ), The sealing force of the sealing member 20 and the inner case 10 is not broken and the sealing force is maintained even when local pressure is generated in the center of the sealing member 20 or heat deformation caused by external heat occurs. do.

On the other hand, the sealing member 20 of the present invention is preferably composed of a mixture of SBS (Styrene Ethylene Butadiene Styrene) and TPV (Thermoplastic Vulcanization) or SEBS (Styrene Ethylene Butadiene Styrene) in the thermoplastic elastomer (TPE). In this case, it is even more preferred that the mixture of SEBS and TPV is SEBS within 0% and within 30% of the total weight.

This was verified through an evaluation test.

In the test, the sealing member 20 is made of conventional rubber (IR), TPV, TPV + PE 10%, TPV + PE 20%, TPV + PP 10%, TPV + PP 20%, TPV + SEBS 10%, TPV + SEBS 20 According to the%, SEBS material, hardness, infusion set insertability, appearance defect rate at insertion, fragment generation rate at infusion set, fragment generation rate at 21G needle insertion, fragment generation rate at 18G needle insertion were evaluated.

Test items and methods are shown in Table 1 below.

For the hardness measurement, an IRHD hardness tester was used and the evaluation criteria were 40 or less.

The infusion set insertability was measured by Push Pull Gauge, and the evaluation criteria was 9Kgf or less.

When inserting, the appearance was visually (sensational) and evaluated as having no tear marks.

The incidence of debris at the time of insertion of the infusion set, the insertion of the 21G needle and the insertion of the 18G needle was determined by filtering out the sap with filter paper when the infusion set was inserted.

Item Evaluation device standard Hardness IRHD 40 or less Infusion Set Insertion Measurement with Push Pull Gauge using Infusion Set 9Kgf or less Appearance defect rate at insertion Visual (sensual) No tear marks Debris incidence when inserting a fluid set Filter by filter after insert Fragment Free Debris Rate at 21G Needle Insertion Filter by filter after insert Fragment Free Debris incidence with 18G needle insertion Filter by filter after insert Fragment Free

By the experiment as described above it was possible to obtain the test results as shown in Table 2.

As shown in Table 2, when TPV + SEBS 10% and SEBS had slight differences in hardness, the same good results were obtained in the infusion set insertability, appearance defect rate during insertion, and fragmentation rate. In particular, TPV + SEBS 20% days In this case, the appearance defect rate at insertion and debris incidence rate at the insertion of an infusion set were significantly superior to other conditions, and were comprehensively judged as excellent.

Classification and item
contrast Example 1 Example 2 Example 3 Original IR TPV (1035 NM) TPV + PE 10% TPV + PE 20% Hardness 35 33 37 40 Infusion Set Insertion Less than 8.5Kgf 7.5Kgf or less 8.7Kgf or less Less than 9Kgf Appearance defect rate at insertion 7% 30% 25% 15% Debris incidence when inserting a fluid set 10% 15% 10% 5% Debris Rate at 21G Needle Insertion 3% 0% 0% 0% Debris incidence with 18G needle insertion 5% 0% 0% 0% Total judgment - Similarity Inadequate Inadequate Example 4 Example 5 Example 6 Example 7 Example 8
TPV + PP 10%
TPV + PE 20%
TPV + SEBS 10%
TPV + SEBS 20%
SEBS 40 45 33 30 40 Less than 9Kgf 10.3Kgf or less 7.5Kgf or less Less than 7Kgf Less than 8Kgf 10% 15% 5% 3% 5% 5% 5% 3% One% 3% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% Inadequate Inadequate Good Great Good

As described above, the sealing member 20 of the present invention is composed of a mixture of SBS (Styrene Ethylene Butadiene Styrene) and TPV (Thermoplastic Vulcanization) or SEBS (Styrene Ethylene Butadiene Styrene) in the thermoplastic elastomer (TPE), in particular, SEBS When the mixture of TPV and SEBS is composed of more than 0% and less than 30% of the total weight, sap set insertion can be improved, and the appearance defect rate and debris incidence at the time of insertion can be reduced or prevented to enable more stable medical activities. do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that many changes and modifications of the present invention can be made without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

10 ... inner case
11.Inside cylinder
12.Outer cylindrical part
12a ... Slope
12b ... straight line
12c ...
20.Sealing member
21.First recess
22 ... Ling
23a ... central center
23b.
24 ... Ling
25 second recess
S ... space
30.Inner cover

Claims (5)

In the sealing cap installed in the inlet of the fluid pack,
An inner case inserted into the inlet of the infusion pack;
A sealing member disposed to be in close contact with an upper end of the inner case;
An outer cover for coupling the inner case and the sealing member to each other,
The sealing member is inlet sealing cap for the sap pack, characterized in that made of a thermoplastic elastomer (TPE) material.
The method of claim 1,
A first concave portion formed in a lower direction is formed in the center of the upper surface of the sealing member, and a protruding ring portion is formed around the first concave portion.
The center of the lower surface of the sealing member is formed so as to protrude from the lower edge, the ring-shaped insertion groove is formed between the lower surface center and the lower edge, and the lower portion has a second recess formed in the upper direction Inlet sealing cap for the sap pack.
3. The method of claim 2,
The inner case
An inner cylindrical portion inserted into the insertion groove so that an upper portion surrounds an outer circumferential surface of the central portion of the lower surface;
It extends upwardly from the inner cylindrical portion, and includes an outer cylindrical portion surrounding the side of the sealing member,
An inlet sealing cap for an infusion pack, characterized in that the space between the inner cylindrical portion and the outer cylindrical portion is formed spaced apart from each other.
The method of claim 1,
The sealing member is a thermoplastic elastomer (TPE) of the inlet sealing cap for the sap pack, characterized in that the mixture of SBS (Styrene Ethylene Butadiene Styrene) and TPV (Thermoplastic Vulcanization) or SEBS (Styrene Ethylene Butadiene Styrene).
5. The method of claim 4,
The mixture of the SEBS and TPV is inlet sealing cap for the sap pack, characterized in that the SEBS is within 30% more than 0% of the total weight.

Images