CN221963631U - A patch test tape - Google Patents

Abstract

The utility model discloses a patch test adhesive tape, which comprises back paper, a microporous PU film, a coded polyester sheet, a medical silica gel ring, a PET release film, a medical silica gel cover and a reagent; the patch test adhesive tape is ready to be used after being applied, is simple and convenient to operate, has good laminating property of an ultrathin and ultra-soft microporous PU film, enables each medical silica gel ring to be better isolated, further reduces mutual cross contamination of various allergen detection reagents, causes erroneous judgment of test results, is internally provided with an antioxidant dampproof fresh-keeping card, can ensure that the patch reagent is homogenized, sterilized and stable well after being sealed by ethylene oxide sterilization, and has the advantages that a detection item can be expanded at any time according to the application requirement of the reagent, particularly good waterproofness and laminating property, and a tester has no uncomfortable feeling during the use period of 48 hours, and can bath and move normally.

Description

A patch test tape

Technical Field

The utility model belongs to the technical field of medical devices, and in particular relates to a patch test tape.

Background Art

Patch testing is used clinically to detect potential allergens or irritants, and is mostly used for clinical diagnosis of allergic diseases, such as contact dermatitis, eczema, etc. It is simple to operate, the test is relatively safe, there are very few adverse reactions, and the test results are accurate and reliable. Because the back, upper arm and flexor skin of the forearm have more dendritic cells that mediate immune recognition functions, they are often used as patch test sites, among which the upper back is the best site. The main purpose of the patch test is to find allergens and find out the causes of sensitization, so as to implement targeted treatment and prevention for patients. Patients are guided to avoid contact with substances with the same or similar molecular structures and functional groups in their future life and work, and to avoid the occurrence and deterioration of allergic skin diseases. Patch testing is regarded as the gold standard for diagnosing allergic contact dermatitis.

At present, the mainstream allergen detection patches of international and domestic patch test diagnostic reagents are: one is Europe's "Remin", the patch core chamber is made of hard plastic material and non-woven tape, the tester will feel discomfort at the compression point of the back when lying flat, the patch chamber has a certain thickness, resulting in unsatisfactory fit between the tape and the subject's skin of some products, and the edge or middle part of the tape is lifted, resulting in inaccurate results and false negatives. The other is the "Quitais" from the United States, which has not yet been approved for import into my country, and the patch reagent components are all pre-fixed on the patch tape, which cannot flexibly add other contact allergens that the patient or doctor thinks may be related, and the cost is also high. In order to solve the problem of allergen detection patches, the cost is high, the use is cumbersome, the fit is poor, and the edge or middle part is prone to lift, resulting in inaccurate results and false negatives. During the use of the tester, strenuous exercise and bathing are not allowed, and the foreign body sensation when lying flat is uncomfortable and unsatisfactory. Cross-contamination is easy between various allergen detection reagents, affecting the judgment of the results.

Through the above analysis, the problems and defects of the existing technology are as follows: (1) The fit is poor, and the edge or middle part of the tape is lifted, resulting in inaccurate results and false negatives. (2) The cost is high and the use is cumbersome. Various allergen detection reagents are prone to cross-contamination, which affects the result judgment. (3) The non-woven fabric blocks the visual field and cannot observe the skin condition under the tape in time. (4) It affects sweating during exercise and cannot be used for bathing; the discomfort of lying on the back is strong, and the tester’s satisfaction is poor.

Utility Model Content

The utility model provides a patch test tape. The patch test tape of the utility model replaces imported products and realizes domestic substitution. It has low cost and is easy to use. The tester can do strenuous exercise, take a bath at any time and multiple times within 48 hours of use, and there is no discomfort when lying flat for rest. The good fit will not cause the edge or the middle part to curl up. Various allergen detection reagents are isolated and prevented from overflowing by a medical silicone ring 2. The microporous PU film 4 can be used for secondary effective isolation between the medical silicone rings 2, thereby preventing cross contamination between the allergen detection reagents, resulting in inaccurate results and false negatives. The transparent PU film is more conducive to the observation of allergic reactions. If the patient is severely allergic to the allergen, there is no need to wait 48 hours, and the skin condition can be observed through the PU film at any time.

To solve the above problems, the technical solutions provided by the present invention are as follows:

The utility model provides a patch test tape, comprising a PET release film (5), a microporous PU film (4) being arranged on the PET release film (5), and a coded polyester sheet (3) being arranged on the microporous PU film (4); the coded polyester sheet (3) is a two-row series of circular structures with a diameter of 5 mm and an equal spacing, and each row of series of circular structures is connected to each other; two rows of medical silicone rings (2) are arranged on the two rows of medical silicone rings (2), and two rows of medical silicone covers (6) are arranged on the two rows of medical silicone rings (2); and a backing paper (1) covering the coded polyester sheet (3), the two rows of medical silicone rings (2) and the two rows of medical silicone covers (6) is also arranged on the microporous PU film (4);

Wherein, an easy-tear separation line (1-1) is provided on one side of the backing paper (1), and the easy-tear separation line (1-1) is used to divide the backing paper (1) into a handheld portion (1-2) and a tearing portion (1-3), and two rows of medical silicone rings (2) are located below the tearing portion (1-3);

The number of the two rows of medical silicone rings (2) is 10, and the interior of each medical silicone ring (2) is a hollow structure, and the diameter of each medical silicone ring (2) is 15 mm, the height is 7 mm, and the edge thickness is 1 mm; one medical silicone ring (2) is buckled with one medical silicone cover (6), and the lower end of each medical silicone cover (6) is an open structure, and the open structure is filled with a reagent (7); each medical silicone cover (6) has a T-shaped cross-section, and its inner ring diameter is 19 mm, the height is 15.2 mm, and the edge thickness is 1 mm.

According to an optional embodiment of the present invention, the diameter of the membrane pores of the microporous PU membrane (4) is 10 to 50 μm.

According to an optional embodiment of the utility model, the microporous PU film (4) comprises a transparent PET film substrate and a self-adsorbing polyurethane PU pressure-sensitive glue located on the transparent PET film substrate.

According to an optional embodiment of the utility model, a wavy tear-away opening (5-1) is provided in the middle of the PET release film (5).

Beneficial effects: The embodiment of the utility model provides a patch test tape, which includes backing paper, a microporous PU film, a coded polyester sheet, a medical silicone ring, a PET release film, a medical silicone cover and reagents; the patch test tape is ready to use and easy to operate. The ultra-thin and ultra-soft microporous PU film has good fit, so that each medical silicone ring can be better isolated, further reducing the cross-contamination of various allergen detection reagents and causing misjudgment of test results. It has a built-in antioxidant and moisture-proof fresh-keeping card. After sealing, it is sterilized with ethylene oxide to ensure the homogenization, sterility and stability of the patch reagent, and the detection items can be expanded at any time according to the application needs of the reagent, especially the good waterproofness and fit. The tester has no discomfort during the 48-hour use and can take a bath and exercise normally.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art 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.

FIG1 is a schematic diagram of the structural decomposition of a patch test tape provided in an embodiment of the present application.

FIG. 2 is a schematic diagram of the structure of a patch test tape after being opened provided in this embodiment.

FIG3 is a schematic diagram of the structure of a patch test tape provided in this embodiment being attached to the skin.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

As shown in Figure 1, the present invention provides a schematic diagram of the structure of a patch test tape. A patch test tape includes a backing paper 1, a medical silicone ring 2, a coded polyester sheet 3, a microporous PU film 4, a PET release film 5, a medical silicone cover 6 and a reagent 7. The patch test tape is ready to use and easy to operate.

Specifically, as shown in Figures 1, 2 and 3, the patch test tape includes a PET release film 5, a microporous PU film 4 is arranged on the PET release film 5, and a coded polyester sheet 3 is arranged on the microporous PU film 4. The coded polyester sheet 3 is a 2-row string circular structure with a diameter of 5 mm and an equal spacing, and each row of the string circular structures is connected to each other. Two rows of medical silicone rings 2 are arranged on the 2 rows of the string circular structure, and two rows of medical silicone covers 6 are arranged on the 2 rows of medical silicone rings 2. The microporous PU film 4 is also provided with a backing paper 1 covering the coded polyester sheet 3, the 2 rows of medical silicone rings 2 and the 2 rows of medical silicone covers 6.

An easy-tear dividing line 1-1 is provided on one side of the backing paper 1, and the distance between the easy-tear dividing line 1-1 and the edge of one side of the backing paper 1 is preferably 8 mm. The easy-tear dividing line 1-1 is used to divide the backing paper 1 into a hand-held portion 1-2 and a tearing portion 1-3. The hand-held portion 1-2 is used to prevent hand bacteria from infecting the tape, and the tearing portion 1-3 facilitates the removal of the backing paper 1 from the microporous PU film 4. Two rows of medical silicone rings 2 are located below the tearing portion 1-3. From left to right, 2 rows and 5 columns, a total of 10 medical silicone covers 6, are fixed equidistantly.

There are 10 medical silicone rings 2 in two rows, each of which is a hollow structure, with a diameter of 15 mm, a height of 7 mm, and an edge thickness of 1 mm. One medical silicone ring 2 is buckled with one medical silicone cover 6, and the lower end of each medical silicone cover 6 is an open structure filled with reagent 7. Each medical silicone cover 6 has a T-shaped cross section, with an inner diameter of 19 mm, a height of 15.2 mm, and an edge thickness of 1 mm.

The diameter of the membrane pores of the microporous PU membrane 4 in this embodiment is 10-50 μm. The microporous PU membrane 4 comprises a transparent PET film substrate and a self-adsorbing polyurethane PU pressure-sensitive glue on the transparent PET film substrate.

The first row of circular structures on the coded polyester sheet 3 is printed with numbers 1, 2, 3, 4 and 5 on the back, and the second row of circular structures on the coded polyester sheet 3 is printed with numbers 6, 7, 8, 9 and 10 on the back. The coded polyester sheet 3 has a total length of 100 mm and a diameter of 5 mm with equal spacing of circular structures. The microporous PU film 4 uses a Pu protective film with glue on the top, and the middle part is sequentially bonded with the coded polyester sheet 3 and the medical silicone ring 2. The coded polyester sheet 3 is preferably located on the inner side of the medical silicone ring 2, and both are adapted to the position of the medical silicone cover 6. A PET release film 5 is provided at the lower end of the coded polyester sheet 3, and a wavy easy-tear opening 5-1 is provided in the middle of the PET release film 5.

The microporous PU membrane 4 uses a Pu protective film with a transparent PET film as the substrate, and is made of a self-adsorbing polyurethane PU pressure-sensitive glue on the surface. The glue on the microporous PU membrane 4 is more stable, and there will be no residual glue after long-term lamination. It has good anti-static effect, high surface cleanliness, and can withstand high temperature and humidity. It has good exhaust performance, good adsorption performance, good lamination performance, no residual glue at high temperature, and stable viscosity. It is produced in a clean workshop, dust-free coating, high cleanliness, and has excellent appearance performance. The new allergen detection kit uses a microporous PU membrane with a very small membrane pore diameter of only 10-50μm, which is between water vapor with a diameter of 4x10-4μm and water droplets with a diameter of 100-300μm. Water vapor can pass through the microporous film, but water droplets cannot pass through, thereby achieving the purpose of waterproof and breathable. Under an electron microscope. A clear microporous structure can be observed, and its breathability is comparable to the breathability of human skin.

The medical silicone ring 2 has good biocompatibility, is non-irritating to human tissue and skin, non-toxic, non-allergic, and has very little body rejection reaction; it has good physical and chemical properties, can maintain its original elasticity and softness during contact with body fluids and tissues, and is not degraded. It is a fairly stable inert substance. It is used to ensure that the patch reagent can fully contact the skin and will not overflow the range of the medical silicone ring 2. The reagent 7 in the medical silicone cover 6 can be used for both liquid allergen detection reagents and gel allergen detection reagents. The medical silicone ring 2 and the medical silicone cover 6 are particularly easy to operate for solution-shaped patch reagents, simplifying the operating steps and saving operating time.

The patch test tape of the utility model can achieve the following technical effects: 1. Waterproofness: The new allergen detection patch adopts a PU film with an anti-human skin structure, which is breathable and waterproof, does not affect sweating during exercise, and can be used for bathing; it is extremely thin and fits the skin texture, without any discomfort, and the tester has high satisfaction with the use. 2. Homogenization: The allergen patch reagent can be evenly dispersed on the patch reagent filter paper. 3. Sterility: Since the patch reagent is a product that directly contacts the skin, it should avoid the growth of microorganisms during the shelf life, resulting in "mold spots" and "bulging bags". After sterilization with ethylene oxide, the utility model has a built-in antioxidant moisture-proof fresh-keeping card and an adsorption method for allergen reagents, which can well achieve this. 4. Isolation: The good fit of the ultra-thin and ultra-soft PU film allows better isolation between the medical silicone rings 2, further reducing the cross-contamination of various allergen detection reagents and causing misjudgment of test results. 5. Stability: The backing paper 1, microporous PU film 4, and PET polyester sheet used in the allergen detection patch are used to carry and adsorb the patch reagent 7, and the medical silicone ring 2 and medical silicone cover 6 are used to fix the reagent 7 and prevent it from flowing out and odor transfer. The medical silicone ring 2, medical silicone cover 6 and PET release film 5 are all inert products and will not react chemically with the patch reagent.

This new allergen detection patch is packaged in an aluminum foil bag with a built-in antioxidant moisture-proof fresh-keeping card. After sealing, it is sterilized with ethylene oxide and has a shelf life of 3 years. It can ensure the homogeneity, sterility and stability of the patch reagent. The detection items can be expanded at any time according to the application needs of the reagent. In particular, it has good waterproofness and fit. During the 48-hour use, the tester has almost no discomfort and can exercise and take a bath normally. There is no discomfort when lying flat to rest. The good fit will not cause the edges or the middle to curl up, resulting in inaccurate results and false negatives.

As shown in Figures 2 and 3, the patch test tape is used as follows: tear open the aluminum foil packaging bag, take out the new allergen detection patch, peel off the backing paper 1 along the easy-tear dividing line 1-1 of the backing paper 1, and inject the allergen detection reagent 7 according to the coded polyester sheet 3 according to different allergen detection requirements; or the manufacturer with relevant qualifications can precisely add various allergen detection reagents, attach it to the healthy skin 8 on the upper back or the outer side of the upper arm, press gently to make the allergen detection patch better adhere to the skin, tear off the wavy easy-tear edge 5-1, tear off the PET release film 5, and press gently to make the allergen detection patch better adhere to the skin 8.

In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims (4)

1. The spot pasting test adhesive tape is characterized by comprising a PET release film (5), wherein a microporous PU film (4) is arranged on the PET release film (5), and a coded polyester sheet (3) is arranged on the microporous PU film (4); the encoding polyester sheet (3) is of 2 rows of serial round structures with the diameter of 5mm at equal intervals, and each row of serial round structures are connected with each other; 2 rows of medical silica gel rings (2) are arranged on the 2 rows of serial round structures, and 2 rows of medical silica gel covers (6) are arranged on the 2 rows of medical silica gel rings (2) in an aligned manner; the microporous PU film (4) is also provided with a back paper (1) which covers the encoding polyester sheet (3), the 2-row medical silica gel rings (2) and the 2-row medical silica gel covers (6);

The medical silicon rubber ring tearing machine comprises a piece of back paper (1), wherein one side of the back paper (1) is provided with an easy-tearing dividing line (1-1), the easy-tearing dividing line (1-1) is used for dividing the back paper (1) into a handheld part (1-2) and a tearing part (1-3), and 2 rows of medical silicon rubber rings (2) are positioned below the tearing part (1-3);

The number of the medical silica gel rings (2) in the 2 rows is 10, the inside of each medical silica gel ring (2) is of a hollow structure, the diameter of each medical silica gel ring (2) is 15mm, the height is 7mm, and the edge thickness is 1mm;1 medical silica gel ring (2) is buckled with 1 medical silica gel cover (6), the lower end of each medical silica gel cover (6) is of an opening structure, and the opening structure is filled with a reagent (7); the cross section of each medical silica gel cover (6) is T-shaped, the diameter of the inner ring of the medical silica gel cover is 19mm, the height of the medical silica gel cover is 15.2mm, and the edge thickness of the medical silica gel cover is 1mm.

2. The patch test tape according to claim 1, wherein the microporous PU film (4) has a film pore diameter of 10 to 50 μm.

3. The patch test adhesive tape according to claim 1, wherein the microporous PU film (4) comprises a transparent PET film substrate and self-absorption polyurethane PU pressure-sensitive adhesive water on the transparent PET film substrate.

4. The spot pasting test adhesive tape according to claim 1, wherein a wavy easy-to-tear opening (5-1) is arranged in the middle of the PET release film (5).