Acupuncture point pressure patch

Abstract

The invention discloses an acupoint pressure patch and a preparation method thereof, and belongs to the technical field of medical dressings and health care products. The pressure patch comprises a base material and a functional layer, wherein the functional layer contains 10%-30% of tourmaline powder, 20%-40% of purple mud powder, 20%-40% of section mud powder and medical auxiliary materials. The tourmaline releases far infrared rays and negative oxygen ions, and the purple mud and the section mud promote active ingredients to act on acupuncture points through a gradient breathable structure, so that multi-dimensional adjustment is realized synergistically. The preparation method comprises the steps of raw material pretreatment, slurry preparation, coating drying and forming sterilization. The pressure patch can strengthen blood circulation, relieve pain, improve metabolism and immunity and improve sleep, is low in irritation and is suitable for health care of multiple acupuncture points.

Description

Technical Field

[0001] This invention relates to the field of medical dressings and health care products, specifically to an acupoint pressure patch and its preparation method. Background Art

[0002] Acupressure patches, as a health care product that combines traditional Chinese medicine acupoint theory with modern material technology, apply appropriate physical pressure to specific acupoints on the human body, and with the help of the penetration of active ingredients, achieve the effects of unblocking meridians, regulating qi and blood, and relieving physical discomfort. Due to their convenient use and non-invasiveness, they are widely used in daily health care and the adjunctive treatment of chronic diseases.

[0003] In existing technologies, the function of acupoint pressure patches mainly relies on two technical approaches: one is based on physical pressure stimulation, using materials such as silicone and elastic resin to create raised structures with a certain degree of hardness. These stimulate meridians through mechanical pressure when applied to acupoints. However, its function is singular, relying solely on physical stimulation and lacking active regulation of human physiological functions. Furthermore, these materials have poor breathability, and long-term application can easily lead to skin stuffiness, sweat accumulation, and even allergies or inflammation. The other approach adds active ingredients such as traditional Chinese medicine extracts and magnetic powder to the physical pressure base. The product aims to enhance the effect through ingredient penetration. For example, some products add Chinese herbal powders such as mugwort and ginger, using their volatile components to stimulate acupoints. However, the stability of Chinese herbal ingredients is poor, and they are easily affected by temperature and humidity, causing them to become ineffective. Furthermore, the transdermal absorption efficiency of the active ingredients is low, and the actual effect is often difficult to guarantee. Some products also use magnets as functional carriers, regulating local metabolism through the action of magnetic fields. However, the strength of the magnetic field is difficult to control precisely. Too strong a magnetic field may have adverse effects on the human body, while too weak a magnetic field will not work. In addition, the magnet itself is hard, resulting in poor comfort and poor adhesion to the skin.

[0004] Furthermore, existing acupoint pressure patches suffer from significant limitations in material selection: most products use single materials or simple composite materials, failing to fully utilize the complementary functions of different materials. For example, some pressure patches containing mineral components focus only on the physical stimulation of minerals, neglecting their potential to release active factors (such as far-infrared rays and negative oxygen ions); while products emphasizing breathability often sacrifice the stability of functional ingredients, resulting in the release of active ingredients too quickly or too slowly, failing to achieve long-lasting and stable health benefits. Simultaneously, existing products lack sufficient control over the balance between "pressure, active ingredients, and skin compatibility" in acupoint stimulation. Either they use excessively rigid materials to pursue pressure stimulation, affecting comfort, or they reduce material density to improve breathability, resulting in insufficient pressure, making it difficult to balance effectiveness and comfort.

[0005] In summary, existing acupoint pressure patches still have many shortcomings in terms of functional synergy, material compatibility, effect stability, and user comfort. There is an urgent need to develop a new type of acupoint pressure patch that can integrate the advantages of multiple natural materials, achieve both physical stimulation and physiological regulation, and also has breathability and comfort. Summary of the Invention

[0006] To address the problems of existing acupoint pressure patches having limited functionality, poor breathability, and insufficient synergistic effects, this invention provides an acupoint pressure patch that achieves multi-dimensional regulation through the synergistic effect of three materials: physical pressure stimulation, far-infrared rays, negative oxygen ions, and mineral penetration, thereby enhancing health benefits.

[0007] The above-mentioned objective of the present invention is achieved through the following technical solution: an acupoint pressure patch, comprising a substrate and a functional layer disposed on the substrate, wherein the functional layer contains the following raw materials by weight percentage: 10%-30% tourmaline powder, 20%-40% purple clay powder, 20%-40% duct clay powder, and the remainder being medical excipients; the functional layer generates pressure stimulation by adhering to acupoints on the human body, and achieves synergistic health care effects by releasing far-infrared rays, negative oxygen ions and minerals.

[0008] In this invention, the selection and function of each component are as follows:

[0009] Tourmaline powder: Made from natural tourmaline ore (mainly composed of magnesium aluminum silicate), it is crushed, ball-milled, and passed through a 100-500 mesh sieve, with a particle size controlled between 1-50 μm. Its negative oxygen ion release is consistently between 10,000-20,000 ions / cm³, and its far-infrared emissivity is ≥90% (wavelength 3-15 μm). It can penetrate deep into the skin to produce a warming effect while simultaneously releasing negative oxygen ions to regulate cell activity.

[0010] Purple clay powder: Made from natural purple clay ore with an iron content of 8%-10%, the powder is washed (to remove impurities), calcined (600-800℃, 2 hours), and then pulverized through a 100-300 mesh sieve, resulting in a particle size of 5-100μm. Calcination treatment enhances its porosity (15%-20%), improves air permeability, and allows the iron to be present in a form more easily absorbed by the skin (such as Fe). 3+ (oxides).

[0011] Duan clay powder: Made from natural Duan clay ore with a SiO2 content ≥60%, it undergoes the same pretreatment process as purple clay (washing, calcination, and crushing), and is passed through a 100-300 mesh sieve with a particle size of 5-100μm. Its unique dual-pore structure (porosity 25%-30%) enhances air permeability, and silicon exists in the form of soluble silicates, which aids in skin metabolism.

[0012] Medical dressings:

[0013] Medical adhesives: Acrylic pressure-sensitive adhesives (5%-15%) or natural rubber adhesives are selected to ensure the adhesion of the functional layer to the substrate and skin, and to avoid clogging the pores of purple clay and duan clay.

[0014] Moisturizers: Glycerin or hyaluronic acid (1%-5%), to maintain the humidity of the functional layer and prevent the material from cracking due to dryness;

[0015] Transdermal absorption enhancer: Menthol or azone (0.5%-3%), which promotes the transdermal absorption of active ingredients (negative oxygen ions, minerals) in tourmaline, purple clay, and boulders.

[0016] The present invention provides a method for preparing an acupoint pressure patch, comprising the following steps:

[0017] (1) Raw material pretreatment:

[0018] Tourmaline processing: Crush natural tourmaline ore to a particle size ≤5mm, put it into a ball mill (ball-to-material ratio 3:1), use ethanol as a dispersant, grind for 2-4 hours and then pass it through a 100-500 mesh sieve to obtain tourmaline powder, and dry it at 60℃ for later use.

[0019] Processing of purple clay and duan clay: Take natural purple clay and duan clay ore materials respectively, wash them 3 times with deionized water (to remove surface impurities), dry them at 105℃, and then place them in a muffle furnace and calcine them at 600-800℃ for 2 hours (to remove organic impurities and activate pores). After cooling, crush and ball mill them (same as the tourmaline process, ball-to-material ratio 3:1, with ethanol as the dispersant). Pass them through a 100-300 mesh sieve to obtain purple clay powder and duan clay powder, and store them in a sealed container.

[0020] (2) Preparation of functional slurry:

[0021] Weigh out 10%-30% tourmaline powder, 20%-40% purple clay powder, and 20%-40% duan clay powder by weight percentage, add them to a mixer, and stir at room temperature for 10 minutes (300 r / min) to make the powder premixed evenly.

[0022] Add medical excipients (adhesives, humectants, transdermal penetration enhancers) to the premixed powder and continue stirring for 20-30 minutes (500 r / min). At the same time, slowly add deionized water (solid-liquid ratio 1:0.8-1.2) to form a uniform paste-like functional slurry (viscosity controlled at 5000-10000 mPa·s).

[0023] (3) Coating and drying:

[0024] Lay the substrate (non-woven fabric, spunlace fabric or breathable film) flat on the coating machine table, and use a scraper to evenly coat the functional slurry onto the substrate surface, controlling the wet film thickness to be 0.5-3mm (the functional layer thickness after drying is 0.3-2mm).

[0025] Transfer the coated substrate to a hot air drying oven and dry at 40-60℃ for 1-3 hours (humidity ≤30%) until the moisture content is ≤5%, so that the adhesive can be cured and the powder activity can be maintained.

[0026] (4) Shaping and sterilization:

[0027] According to the shape of the acupoint (such as round or oval), use a die-cutting machine to cut the dried semi-finished product into the preset size (diameter 2-5cm or area 4-25cm²). 2 );

[0028] Place the finished product in a UV sterilization chamber (intensity 30W / m²). 2 Sterilize for 30 minutes and then aseptically package to obtain the product.

[0029] This invention achieves synergistic effects through material selection and process optimization:

[0030] 1. The far-infrared rays and negative oxygen ions of tourmaline act on acupoints through the pore structure of purple clay and dun clay, avoiding the diffusion and loss of active factors.

[0031] 2. The moderate porosity of purple clay and the high porosity of duan clay form a "gradient air-permeable channel", which not only ensures skin respiration but also allows the active ingredients to be released slowly (the release cycle is extended to 6-8 hours).

[0032] 3. During the preparation process, calcination treatment enhances the mineral solubility of purple clay and duan clay, and transdermal absorption enhancer further improves the skin absorption rate of elements such as iron and silicon, which, together with the physical factors of tourmaline, regulate acupoint metabolism.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. Enhanced blood circulation: This invention utilizes the far-infrared rays (emissivity ≥90%) released by tourmaline in synergy with the breathable structure of purple clay and duanni clay. The far-infrared rays can penetrate deep into the skin tissue to produce a warming effect, promoting capillary dilation and significantly improving blood circulation efficiency compared to single material groups.

[0035] 2. Enhanced pain and muscle stiffness relief: The warming effect of far-infrared rays combined with the mineral penetration (iron and silicon elements) of purple clay and duanni clay can relax muscles and tendons, while accelerating the clearance of inflammatory substances. The pain relief effect and duration are superior to those of tourmaline alone.

[0036] 3. Enhances metabolism and immune regulation efficiency: The negative oxygen ions released by tourmaline act evenly on acupoints through the double-pore structure of the mud, promoting cell membrane ion exchange and enhancing cell activity, which helps to enhance metabolism and immune regulation functions.

[0037] 4. Optimized relaxation and sleep improvement effects: The warming effect of far-infrared rays and the synergistic effect of negative oxygen ions, combined with the delicate skin-adhering properties of purple clay (reducing skin irritation), can regulate the balance of the nervous system and improve sleep quality and physical and mental relaxation. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the embodiments.

[0039] Example 1: A circular pressure patch suitable for the Yongquan acupoint.

[0040] Functional layer formulation (wt%):

[0041] Tourmaline powder 20% (particle size 20μm, 300 mesh), purple clay powder 30% (particle size 50μm, 200 mesh), duct clay powder 30% (particle size 50μm, 200 mesh), acrylate pressure-sensitive adhesive 15%, glycerin 4%, menthol 1%.

[0042] Preparation steps:

[0043] Step 1: Ball mill the tourmaline for 3 hours and pass it through a 300-mesh sieve. After calcining the purple clay and duan clay at 700℃, ball mill the tourmaline according to the process (ball-to-material ratio 3:1, with ethanol as the dispersant) for 2 hours and pass it through a 200-mesh sieve.

[0044] Step 2: Premix the powder for 10 minutes (300 r / min), add the auxiliary materials and deionized water (solid-liquid ratio 1:1), stir for 25 minutes (500 r / min) to obtain a slurry with a viscosity of 8000 mPa·s;

[0045] Step 3: Coat onto nonwoven fabric, wet film thickness 1.5mm (0.8mm after drying), dry at 50℃ for 2 hours;

[0046] Step 4: Cut into 3cm diameter circles, sterilize with ultraviolet light for 30 minutes, and aseptically package.

[0047] After the product in this embodiment is applied to the Yongquan acupoint, the far-infrared rays released by tourmaline (measured emissivity 92%) synergize with the gradient breathable structure of purple clay (porosity 18%) and duanni clay (porosity 28%). Clinical trials have verified that this can increase blood flow at the acupoint by 58.3% ± 5.2% after 2 weeks and shorten sleep latency by 18.2 ± 3.1 minutes. Compared with the tourmaline-only group, the blood circulation efficiency and sleep improvement effect are significantly improved (see the clinical trial section for specific data).

[0048] Example 2: Oval pressure patch suitable for Zusanli acupoint

[0049] Functional layer formulation (wt%):

[0050] Tourmaline powder 25% (particle size 10μm, 500 mesh), purple clay powder 25% (particle size 30μm, 300 mesh), duct clay powder 25% (particle size 30μm, 300 mesh), natural rubber adhesive 20%, hyaluronic acid 4%, azone 1%.

[0051] Preparation steps:

[0052] Step 1: Ball mill the tourmaline for 4 hours and pass it through a 500-mesh sieve; calcine the purple clay and duan clay at 800℃ and then ball mill them for 3 hours and pass them through a 300-mesh sieve.

[0053] Step 2: Premix the powder for 10 minutes, add the auxiliary materials and deionized water (solid-liquid ratio 1:0.9), stir for 30 minutes to obtain a slurry with a viscosity of 7000 mPa·s;

[0054] Step 3: Coat onto spunlace fabric, wet film thickness 2mm (1mm after drying), dry at 60℃ for 1.5 hours;

[0055] Step 4: Cut into 4cm×6cm oval shapes and sterilize and package.

[0056] Example 3: Square pressure patch suitable for Guanyuan acupoint

[0057] Functional layer formulation (wt%):

[0058] Tourmaline powder 15% (particle size 50μm, 100 mesh), purple clay powder 35% (particle size 100μm, 100 mesh), duct clay powder 35% (particle size 100μm, 100 mesh), acrylate pressure-sensitive adhesive 12%, glycerin 2.5%, menthol 0.5%.

[0059] Preparation steps:

[0060] Step 1: Ball mill the tourmaline for 2 hours and pass it through a 100-mesh sieve. After calcining the purple clay and duan clay at 600℃, ball mill the materials for 2 hours and pass them through a 100-mesh sieve.

[0061] Step 2: Premix the powder for 10 minutes, add the auxiliary materials and deionized water (solid-liquid ratio 1:1.2), stir for 20 minutes to obtain a slurry with a viscosity of 6000 mPa·s;

[0062] Step 3: Coat onto a breathable film, wet film thickness 3mm (2mm after drying), dry at 40℃ for 3 hours;

[0063] Step 4: Cut into 5cm x 5cm squares and sterilize and package.

[0064] The clinical trial data for this invention are as follows:

[0065] 1. Experimental Design:

[0066] Sample size: 120 healthy volunteers (aged 20-60 years) were selected and randomly divided into 4 groups (30 people in each group):

[0067] Experimental Group 1: Using the product from Example 1 (Yongquan acupoint);

[0068] Experimental Group 2: Using the product from Example 2 (Zusanli acupoint);

[0069] Control group 1: Pressure stickers containing only tourmaline powder (formula same as in Example 1, but with purple clay and duct clay removed);

[0070] Control group 2: Commercially available ordinary silicone pressure pads (without active ingredients) were used.

[0071] 2. Intervention method: Apply the patch for 8 hours daily for 2 consecutive weeks, and then test relevant indicators.

[0072] 3. Test Results:

[0073] (1) Blood circulation promotion effect (blood flow at acupoints was detected using a laser Doppler flowmeter)

[0074]

[0075]

[0076] (2) Pain and muscle stiffness relief effect (using the Visual Analogue Scale (VAS), 0-10 points, the higher the score, the more severe the symptoms).

[0077]

[0078] (3) Sleep improvement effect (using the Pittsburgh Sleep Quality Index (PSQI), the higher the score, the worse the sleep).

[0079]

[0080] (4) Safety evaluation (using the Draize skin irritation score, 0-4 points, 0 points for no irritation)

[0081]

[0082]

[0083] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An acupressure patch, characterized in that: The product includes a substrate and a functional layer disposed on the substrate. The functional layer contains the following raw materials by weight percentage: 10%-30% tourmaline powder, 20%-40% purple clay powder, 20%-40% duct clay powder, and the remainder being medical excipients. The functional layer generates pressure stimulation by adhering to acupoints on the human body and achieves synergistic health care effects by releasing far-infrared rays, negative oxygen ions, and minerals.

2. The acupoint pressure patch according to claim 1, characterized in that: The tourmaline powder has a particle size of 1-50 μm, and the purple clay powder and duan clay powder have a particle size of 5-100 μm.

3. The acupoint pressure patch according to claim 1, characterized in that: The tourmaline powder releases 10,000-20,000 negative oxygen ions per cubic centimeter, has a far-infrared emissivity of ≥90%, and a wavelength of 3-15 μm.

4. The acupoint pressure patch according to claim 1, characterized in that: The purple clay powder has an iron content of 8%-10% and a porosity of 15%-20%; the section clay powder has a SiO2 content of ≥60% and a porosity of 25%-30%.

5. The acupoint pressure patch according to claim 1, characterized in that: The medical excipients include medical adhesives, humectants, and transdermal penetration enhancers; the medical adhesives account for 5%-15% of the total weight of the functional layer, the humectants account for 1%-5%, and the transdermal penetration enhancers account for 0.5%-3%.

6. The acupoint pressure patch according to claim 5, characterized in that: The medical adhesive is an acrylic pressure-sensitive adhesive or a natural rubber adhesive; the moisturizer is glycerin or hyaluronic acid; and the transdermal penetration enhancer is menthol or azone.

7. The acupoint pressure patch according to claim 1, characterized in that: The substrate is a nonwoven fabric, spunlace fabric, or breathable film; the thickness of the functional layer is 0.3-2 mm.

8. A method for preparing an acupoint pressure patch as described in any one of claims 1-7, characterized in that: The following steps are involved: (1) Raw material pretreatment: Tourmaline processing: Crush natural tourmaline ore to a particle size ≤5mm, put it into a ball mill (ball-to-material ratio 3:1), use ethanol as a dispersant, grind for 2-4 hours and then pass it through a 100-500 mesh sieve to obtain tourmaline powder, and dry it at 60℃ for later use. Purple clay and Duan clay processing: Take natural purple clay and Duan clay minerals, wash them 3 times with deionized water, dry them at 105℃, place them in a muffle furnace, calcine them at 600-800℃ for 2 hours, cool them, crush them, grind them using the ball milling process for tourmaline processing, and pass them through a 100-300 mesh sieve to obtain purple clay powder and Duan clay powder, and store them in a sealed container. (2) Preparation of functional slurry: Weigh out 10%-30% tourmaline powder, 20%-40% purple clay powder, and 20%-40% duan clay powder by weight percentage, add them to a mixer, and stir at 300 r / min for 10 minutes at room temperature to make the powder premixed evenly. Add medical excipients to the premixed powder and continue stirring at 500 r / min for 20-30 minutes. At the same time, slowly add deionized water (solid-liquid ratio 1:0.8-1.2) to form a paste-like functional slurry with a viscosity of 5000-10000 mPa·s. (3) Coating and drying: The substrate is laid flat on the coating machine table, and the functional slurry is evenly coated on the surface of the substrate using a scraper, controlling the wet film thickness to be 0.5-3mm. Transfer the coated substrate to a hot air drying oven and dry it at 40-60℃ and ≤30% humidity for 1-3 hours until the moisture content is ≤5%. (4) Shaping and sterilization: According to the shape of the acupoints, use a die-cutting machine to cut the dried semi-finished products into the preset size; Place the finished product in a UV sterilization chamber (intensity 30W / m²). 2 Sterilize for 30 minutes and then aseptically package to obtain the product.

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