Split type medicine application patch

By using a split-type drug patch design, and utilizing a microporous absorbent material carrier and a one-way air valve, the problems of drug dripping and evaporation are solved, enabling long-term slow release and continuous moisturization of the drug, thus improving ease of use.

CN224039639UActive Publication Date: 2026-03-27晋江市医院(上海市第六人民医院福建医院)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

When using magnesium sulfate solution in existing dressing products, the solution on the carrier is prone to dripping and evaporation, resulting in short wet dressing time, frequent replacement, and inconvenience.

Method used

It adopts a split design and uses a microporous absorbent material carrier, including a fast-absorbing upper layer and a liquid storage and slow-release lower layer. The fast-absorbing upper layer quickly absorbs the liquid and permeates into the liquid storage and slow-release lower layer, which slowly releases the liquid. Combined with a one-way air valve and a breathable membrane, it ensures that the liquid does not easily drip or evaporate.

Benefits of technology

It achieves a long-term, continuous moist state of the medicine solution, extends the wet compress time, reduces the frequency of replacement, and makes it more convenient to use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of medical treatment, in particular to a split type medicine application patch which is characterized by comprising a slow-release carrier and a liquid storage bag, the liquid storage bag and the slow-release carrier are arranged in a split mode, and the slow-release carrier is a carrier made of micropore absorption materials and comprises a rapid liquid absorption upper layer and a liquid storage slow-release lower layer which are arranged in an up-and-down layering mode. A large and sparse large-aperture absorption micropore structure is arranged in the upper rapid liquid absorption layer, a small and dense small-aperture absorption micropore structure is arranged in the lower liquid storage slow release layer, and liquid medicine can be squeezed out of the liquid storage bag and is used for being squeezed out to the upper rapid liquid absorption layer. According to the utility model, the continuous wet state of the liquid storage slow-release lower layer can be kept for a long time, the liquid medicine is not easy to drop and volatilize, and a better slow-release effect is achieved, so that the wet compress time is long, the action time of the liquid medicine is prolonged, frequent replacement is not needed, and the use is more convenient.
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Description

TECHNICAL FIELD

[0001] The utility model relates to medical technology field, specifically relate to a split type medicine patch. BACKGROUND

[0002] At present, there are some products on the market for swelling and pain, most of which use sponge, non-woven fabric or gauze as carrier, and then wet compress after being soaked with magnesium sulfate solution (50% concentration). Magnesium sulfate has the pharmacological effects of high osmosis, swelling, sedation and improvement of blood vessels and arteriolar spasm. Its high permeability can quickly eliminate local tissue swelling and pain. However, in the traditional way of using sponge, non-woven fabric or gauze as carrier to cover the affected area after being soaked, the magnesium sulfate solution on the carrier is easy to drip, the slow-release effect is general, and it is easy to volatilize from the surface of the carrier, so it cannot maintain the sustained wet state of the slow-release lower layer for a long time, thus shortening the wet compress time and reducing the action time of the magnesium sulfate solution, which needs to be replaced frequently and is inconvenient to use. SUMMARY

[0003] The utility model solves the technical problem to provide a split type medicine patch which can maintain the sustained wet state of the slow-release lower layer for a long time, the drug solution is not easy to drip and volatilize, has better slow-release effect, thus prolonging the wet compress time and increasing the action time of the drug solution, so it does not need to be replaced frequently and is more convenient to use.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a split type medicine patch, which comprises a slow-release carrier and a liquid storage bag arranged separately from the slow-release carrier. The slow-release carrier is a microporous absorption material carrier and comprises a rapid liquid absorption upper layer and a slow-release lower layer arranged in layers. The rapid liquid absorption upper layer is provided with large and sparse large-pore absorption microporous structures, and the slow-release lower layer is provided with small and dense small-pore absorption microporous structures. The liquid storage bag is filled with drug solution and used to squeeze the drug solution into the rapid liquid absorption upper layer. The rapid liquid absorption upper layer is used to rapidly absorb the drug solution and rapidly permeate the drug solution into the slow-release lower layer. The slow-release lower layer is used to rapidly and evenly disperse and store the drug solution permeated from the rapid liquid absorption upper layer and slowly release the drug solution.

[0005] Further, the pore diameter of the large-pore absorption microporous structure is 30-60 μm, and the pore diameter of the small-pore absorption microporous structure is 1-15 μm.

[0006] Further, the thickness of the rapid liquid absorption upper layer is 0.5-1 mm, and the thickness of the slow-release lower layer is 1.5-2.5 mm.

[0007] Further, the drug solution is magnesium sulfate solution.

[0008] Further, the liquid storage bag comprises a four-edge sealed bag body, a dry cavity for storing magnesium sulfate powder and a wet cavity for storing sterile water are arranged in the bag body, the dry cavity and the wet cavity are independent of each other, and a one-way flow valve is arranged at the connection between the dry cavity and the wet cavity, the flow direction of the one-way flow valve is from the wet cavity to the dry cavity, and the one-way flow valve is only opened when a certain opening force is applied to the wet cavity of the bag body.

[0009] Further, the opening force of the one-way flow valve is 5-10 N.

[0010] Further, the upper surface of the slow-release carrier is fixedly covered with a breathable permeable membrane, at least two opposite edges of the breathable permeable membrane are outwardly extended and protrude from the slow-release carrier and form adhesive areas, the lower surface of the adhesive area is provided with an adhesive layer, and the lower surface of the adhesive layer is covered with peelable isolation paper.

[0011] Further, the temperature-sensitive patch is fixedly arranged at one side edge of the upper surface of the slow-release carrier, and the temperature-sensitive patch is used for monitoring the temperature of the slow-release carrier, and the breathable permeable membrane is provided with a visible slot corresponding to and matching the temperature-sensitive patch.

[0012] Further, the temperature-adjusting bag is reversibly connected to one side edge of the slow-release carrier, the temperature-adjusting bag is provided with a temperature-adjusting cavity which is open to one side, and the temperature-adjusting cavity is provided with replaceable temperature-adjusting pieces.

[0013] Further, the slow-release carrier and the liquid storage bag are packaged in the disposable packaging bag.

[0014] As can be seen from the above description, the split type drug application patch has the following beneficial effects: the slow-release carrier is made of microporous absorption material, the upper layer with large and sparse microporous structure with large pore size can quickly absorb the liquid medicine and quickly permeate the liquid medicine into the lower layer for slow-release, the lower layer with small and dense microporous structure with small pore size can quickly and evenly disperse and store the liquid medicine and slowly release the liquid medicine, according to the capillary effect principle, the size of the large pores in the lower layer is obviously smaller than the size of the small pores in the upper layer, so that the small pores in the lower layer can more efficiently transfer and absorb the liquid medicine in the upper layer, thereby keeping the upper layer dry, so that the liquid medicine is not easy to volatilize from the upper surface of the upper layer, and the slow-release carrier can maintain a sustained wet state for a long time, the liquid medicine in the lower layer of the slow-release carrier is not easy to directly drop out, has a better slow-release effect, thereby prolonging the wet application time, increasing the action time of the liquid medicine, and the slow-release carrier does not need to be frequently replaced, and is more convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1The utility model relates to a split type medicine patch piece's structure schematic diagram.

[0016] Figure 2 For Figure 1 Partial enlarged view of A in the middle.

[0017] Figure 3 It is the three-dimensional structure schematic diagram of one angle of slow release carrier.

[0018] Figure 4 It is the three-dimensional structure schematic diagram of another angle of slow release carrier.

[0019] Figure 5 It is the internal structure schematic diagram of liquid storage bag.

[0020] In the figure: 1 - slow release carrier;11 - fast liquid absorbing upper layer;12 - liquid storage slow release lower layer;2 - liquid storage bag;21 - bag body;22 - dry cavity;23 - wet cavity;24 - one-way flow air valve;3 - breathable permeable membrane;31 - sticking area;32 - adhesive layer;33 - isolation paper;4 - temperature sensing patch;5 - temperature adjusting bag;51 - temperature adjusting cavity;6 - disposable packaging bag. DETAILED DESCRIPTION

[0021] The utility model will be further described below through specific embodiment.

[0022] As Figures 1 to 5 Indicated, the utility model discloses a split type medicine patch piece, including slow release carrier 1 and with slow release carrier 1 split setting liquid storage bag 2, slow release carrier 1 is microporous absorbent material carrier and includes the fast liquid absorbing upper layer 11 and liquid storage slow release lower layer 12 of upper and lower layer arrangement, the fast liquid absorbing upper layer 11 is equipped with big and sparse big aperture absorption microporous structure in, the liquid storage slow release lower layer 12 is equipped with small and dense small aperture absorption microporous structure in, the liquid storage bag 2 can squeeze out and be used for extruding to fast liquid absorbing upper layer 11 at the drug liquid, the fast liquid absorbing upper layer 11 is used for fast absorption drug liquid and fast penetrates drug liquid to the liquid storage slow release lower layer 12 in, the liquid storage slow release lower layer 12 is used for fast average dispersion and storage and can slowly release by the drug liquid that penetrates down from fast liquid absorbing upper layer 11.

[0023] By adopting the microporous absorbent material carrier as the slow-release carrier 1, the fast-liquid-absorbing upper layer 11 with large and sparse large-pore absorbing microporous structure can quickly absorb the liquid medicine and quickly penetrate the liquid medicine into the slow-release lower layer 12, and the slow-release lower layer 12 with small and dense small-pore absorbing microporous structure can quickly and evenly disperse and store the liquid medicine and slowly release the liquid medicine. According to the principle of capillary action, the size of the large pores in the slow-release lower layer 12 is obviously smaller than the size of the small pores in the fast-liquid-absorbing upper layer 11, so that the small pores in the slow-release lower layer 12 can more efficiently transfer and absorb the liquid medicine of the fast-liquid-absorbing upper layer 11, thereby keeping the fast-liquid-absorbing upper layer 11 dry, so that the liquid medicine is not easy to volatilize from the upper surface of the fast-liquid-absorbing upper layer 11 of the slow-release carrier 1, and the slow-release lower layer 12 of the slow-release carrier 1 can maintain a continuously wet state for a long time, and the liquid medicine in the slow-release lower layer 12 of the slow-release carrier 1 is not easy to directly drip out, has a better slow-release effect, thereby prolonging the wet compress time and increasing the action time of the liquid medicine, and the slow-release carrier 1 does not need to be frequently replaced, which is more convenient to use. Through multiple tests, by adopting the microporous absorbent material carrier as the slow-release carrier 1, the liquid medicine can be maintained in a non-dripping, non-volatilizing and continuously wet state for at least two hours, and the adhesion to the skin and the plasticity are strong.

[0024] Preferably, the microporous absorbent material carrier can adopt the absorbing core body in a liquid sanitary napkin, and the manufacturing method is as disclosed in the authorized announcement CN116421766B.

[0025] Preferably, the pore diameter of the large-pore absorbing microporous structure is 30-60 μm, the pore diameter of the small-pore absorbing microporous structure is 1-15 μm, the thickness of the fast-liquid-absorbing upper layer 11 is 0.5-1 mm, and the thickness of the slow-release lower layer 12 is 1.5-2.5 mm.

[0026] Preferably, the liquid medicine is a magnesium sulfate solution, in particular a 50% concentration magnesium sulfate solution. In addition, in other embodiments, the liquid medicine can adopt a mirabilite solution, which can be used for hot compress, or a drug solution that is beneficial to vasoconstriction, which can be used for cold compress.

[0027] Correspondingly, the liquid storage bag 2 comprises a four-edge sealed bag body 21, the bag body 21 is internally provided with a dry cavity 22 for storing magnesium sulfate powder and a wet cavity 23 for storing sterile water, the dry cavity 22 and the wet cavity 23 are independent of each other and a one-way flow valve 24 is arranged at the connection between the two, a heat sealing strip can be formed on the bag body 21 by heat sealing to separate the dry cavity 22 from the wet cavity 23, the flow direction of the one-way flow valve 24 is from the wet cavity 23 to the dry cavity 22, the one-way flow valve 24 is opened only when a certain opening force is applied to the wet cavity 23 of the bag body 21, correspondingly, the one-way flow valve 24 can adopt the structure in the prior art, which is a two-end open air nozzle made of co-extrusion film, the opening force of the one-way flow valve 24 is 5-10 N, thereby both the dry and wet separation of the dry cavity 22 and the wet cavity 23 can be met and the magnesium sulfate solution cannot be mixed in advance during daily transportation or storage, the opening force of 5-10 N applied to the wet cavity 23 of the bag body 21 is relatively light and effortless, and the sterile water in the wet cavity 23 enters the dry cavity 22 through the one-way flow valve 24 to mix with the magnesium sulfate powder to form a magnesium sulfate solution, and then the magnesium sulfate solution is squeezed out to the rapid liquid absorption upper layer 11 of the slow-release carrier 1, specifically, an easy-to-tear notch can be arranged on one side edge of the dry cavity 22 of the bag body 21 to facilitate tearing of the bag body 21 and squeezing out of the magnesium sulfate solution, or a liquid outlet can be arranged on one side edge of the dry cavity 22 of the bag body 21, and a valve is arranged at the liquid outlet, so that the magnesium sulfate solution can be conveniently squeezed out of the liquid outlet by opening the valve.

[0028] In addition, the upper surface of the slow-release carrier 1 is fixedly covered with a breathable permeable membrane 3, the magnesium sulfate solution can permeate through the breathable permeable membrane 3 to the slow-release carrier 1, at least two opposite symmetrical edges of the breathable permeable membrane 3 protrude outward beyond the slow-release carrier 1 and form adhesive areas 31, the lower surface of the adhesive area 31 is provided with an adhesive layer 32, and the lower surface of the adhesive layer 32 is covered with a peelable isolation paper 33, preferably, the breathable permeable membrane 3 is made of antibacterial non-woven fabric or antibacterial fiber, in use, the isolation paper 33 is torn to facilitate the adhesive fixation of the breathable permeable membrane 3 through the adhesive layer 32, thereby effectively ensuring the position stability of the slow-release carrier 1 during wet compressing, preferably, the four peripheral edges of the breathable permeable membrane 3 are provided with the adhesive areas 31.

[0029] In addition, preferably, the shape of the slow-release carrier 1 is square, circular or elliptical.

[0030] The split type medicine patch further comprises a temperature sensing patch 4 fixedly arranged at one side edge of the upper surface of the sustained release carrier 1, the temperature sensing patch 4 is used for monitoring the temperature of the sustained release carrier 1, the breathable permeable membrane 3 is provided with a visible slot corresponding to and matching the temperature sensing patch 4, the temperature sensing patch 4 is also called a temperature sensing patch, a temperature sensing paper or a temperature sensing color changing card, the temperature sensing patch 4 is in a strip shape, the temperature sensing range of the temperature sensing patch 4 can be set to below 50 DEG C, the color change of the temperature sensing patch 4 can be used by medical staff to quickly judge the approximate range of the temperature of the sustained release carrier 1, specifically, the temperature sensing patch 4 can be set to change color as follows, below 10 DEG C, red color can be displayed, 11-30 DEG C, yellow color can be displayed, 31-50 DEG C, green color can be displayed, thereby corresponding reminding effect can be provided for medical staff, when the temperature sensing patch 4 displays green color, it is known that the sustained release carrier 1 containing magnesium sulfate solution is in the best wet compress treatment state, when the temperature sensing patch 4 displays yellow color, the sustained release carrier 1 can be timely kept warm to ensure the best use effect of the magnesium sulfate solution, when the temperature sensing patch 4 displays red color, the temperature is too low, the magnesium sulfate solution in the sustained release carrier 1 is easy to crystallize and affect the use effect, in addition, the number of the temperature sensing patch 4 can also be set to multiple to monitor multiple positions on the sustained release carrier 1.

[0031] The split type medicine patch further comprises a temperature sensing patch 4 fixedly arranged at one side edge of the upper surface of the sustained release carrier 1, the temperature sensing patch 4 is used for monitoring the temperature of the sustained release carrier 1, the breathable permeable membrane 3 is provided with a visible slot corresponding to and matching the temperature sensing patch 4, the temperature sensing patch 4 is also called a temperature sensing patch, a temperature sensing paper or a temperature sensing color changing card, the temperature sensing patch 4 is in a strip shape, the temperature sensing range of the temperature sensing patch 4 can be set to below 50 DEG C, the color change of the temperature sensing patch 4 can be used by medical staff to quickly judge the approximate range of the temperature of the sustained release carrier 1, specifically, the temperature sensing patch 4 can be set to change color as follows, below 10 DEG C, red color can be displayed, 11-30 DEG C, yellow color can be displayed, 31-50 DEG C, green color can be displayed, thereby corresponding reminding effect can be provided for medical staff, when the temperature sensing patch 4 displays green color, it is known that the sustained release carrier 1 containing magnesium sulfate solution is in the best wet compress treatment state, when the temperature sensing patch 4 displays yellow color, the sustained release carrier 1 can be timely kept warm to ensure the best use effect of the magnesium sulfate solution, when the temperature sensing patch 4 displays red color, the temperature is too low, the magnesium sulfate solution in the sustained release carrier 1 is easy to crystallize and affect the use effect, in addition, the number of the temperature sensing patch 4 can also be set to multiple to monitor multiple positions on the sustained release carrier 1.

[0032] The split type medicine patch further comprises a temperature sensing patch 4 fixedly arranged at one side edge of the upper surface of the sustained release carrier 1, the temperature sensing patch 4 is used for monitoring the temperature of the sustained release carrier 1, the breathable permeable membrane 3 is provided with a visible slot corresponding to and matching the temperature sensing patch 4, the temperature sensing patch 4 is also called a temperature sensing patch, a temperature sensing paper or a temperature sensing color changing card, the temperature sensing patch 4 is in a strip shape, the temperature sensing range of the temperature sensing patch 4 can be set to below 50 DEG C, the color change of the temperature sensing patch 4 can be used by medical staff to quickly judge the approximate range of the temperature of the sustained release carrier 1, specifically, the temperature sensing patch 4 can be set to change color as follows, below 10 DEG C, red color can be displayed, 11-30 DEG C, yellow color can be displayed, 31-50 DEG C, green color can be displayed, thereby corresponding reminding effect can be provided for medical staff, when the temperature sensing patch 4 displays green color, it is known that the sustained release carrier 1 containing magnesium sulfate solution is in the best wet compress treatment state, when the temperature sensing patch 4 displays yellow color, the sustained release carrier 1 can be timely kept warm to ensure the best use effect of the magnesium sulfate solution, when the temperature sensing patch 4 displays red color, the temperature is too low, the magnesium sulfate solution in the sustained release carrier 1 is easy to crystallize and affect the use effect, in addition, the number of the temperature sensing patch 4 can also be set to multiple to monitor multiple positions on the sustained release carrier 1.

[0033] The split type medicine patch further comprises a temperature sensing patch 4 fixedly arranged at one side edge of the upper surface of the sustained release carrier 1, the temperature sensing patch 4 is used for monitoring the temperature of the sustained release carrier 1, the breathable permeable membrane 3 is provided with a visible slot corresponding to and matching the temperature sensing patch 4, the temperature sensing patch 4 is also called a temperature sensing patch, a temperature sensing paper or a temperature sensing color changing card, the temperature sensing patch 4 is in a strip shape, the temperature sensing range of the temperature sensing patch 4 can be set to below 50 DEG C, the color change of the temperature sensing patch 4 can be used by medical staff to quickly judge the approximate range of the temperature of the sustained release carrier 1, specifically, the temperature sensing patch 4 can be set to change color as follows, below 10 DEG C, red color can be displayed, 11-30 DEG C, yellow color can be displayed, 31-50 DEG C, green color can be displayed, thereby corresponding reminding effect can be provided for medical staff, when the temperature sensing patch 4 displays green color, it is known that the sustained release carrier 1 containing magnesium sulfate solution is in the best wet compress treatment state, when the temperature sensing patch 4 displays yellow color, the sustained release carrier 1 can be timely kept warm to ensure the best use effect of the magnesium sulfate solution, when the temperature sensing patch 4 displays red color, the temperature is too low, the magnesium sulfate solution in the sustained release carrier 1 is easy to crystallize and affect the use effect, in addition, the number of the temperature sensing patch 4 can also be set to multiple to monitor multiple positions on the sustained release carrier 1.

Claims

1. A split pharmaceutical patch, characterized by: The slow-release carrier is a microporous absorbent material carrier and comprises a fast-absorbing upper layer and a slow-release lower layer arranged in layers, the fast-absorbing upper layer is provided with large and sparse macroporous absorbing microporous structures, the slow-release lower layer is provided with small and dense microporous absorbing structures, the liquid storage bag is extruded with a drug solution and is used to extrude to the fast-absorbing upper layer, the fast-absorbing upper layer is used to quickly absorb the drug solution and quickly penetrate the drug solution into the slow-release lower layer, and the slow-release lower layer is used to quickly and evenly disperse and store the drug solution penetrated from the fast-absorbing upper layer and can be slowly released.

2. The split-type medicated patch of claim 1, wherein: The macroporous absorbing microporous structure has a pore size of 30-60 μm, and the microporous absorbing structure has a pore size of 1-15 μm.

3. The split-type medicated patch of claim 1, wherein: The thickness of the fast-absorbing upper layer is 0.5-1 mm, and the thickness of the slow-release lower layer is 1.5-2.5 mm.

4. The split-type medicated patch of claim 1, wherein: The drug solution is a magnesium sulfate solution.

5. The split-type medicated patch of claim 4, wherein: The liquid storage bag comprises a bag body with four sealed edges, the bag body is provided with a dry cavity for storing magnesium sulfate powder and a wet cavity for storing sterile water, the dry cavity and the wet cavity are independent of each other, and a one-way flow valve is arranged at the connection between the two cavities, the flow direction of the one-way flow valve is from the wet cavity to the dry cavity, and the one-way flow valve is opened only when a certain opening force is applied to the wet cavity of the bag body.

6. The split-type medicated patch of claim 5, wherein: The opening force of the one-way flow valve is 5-10 N.

7. The split-type medicated patch of claim 1, wherein: The upper surface of the slow-release carrier is fixedly covered with a breathable permeable membrane, at least two opposite edges of the breathable permeable membrane extend outward beyond the slow-release carrier and form a sticking area, the lower surface of the sticking area is provided with an adhesive layer, and the lower surface of the adhesive layer is covered with a peelable isolation paper.

8. The split-type medicated patch of claim 7, wherein: It also comprises a temperature-sensitive patch fixedly arranged at one side edge of the upper surface of the slow-release carrier, the temperature-sensitive patch is used to monitor the temperature of the slow-release carrier, and the breathable permeable membrane is provided with a visible slot corresponding to and matching the temperature-sensitive patch.

9. The split-type medicated patch of claim 1, wherein: It also comprises a temperature adjusting bag, one side edge of the temperature adjusting bag is reversibly connected with one side edge of the slow-release carrier, the temperature adjusting bag is provided with a temperature adjusting cavity open to one side, and the temperature adjusting cavity is provided with replaceable temperature adjusting pieces.

10. The split-type medicated patch of claim 1, wherein: It also comprises a disposable packaging bag, the slow-release carrier and the liquid storage bag are packaged in the disposable packaging bag.

Citation Information

Patent Citations

  • A method for preparing a liquid sanitary napkin absorbent core

    CN116421766B