Body surface non-chronic wound nursing dressing, preparation method and application

Abstract

The invention discloses a body surface non-chronic wound nursing dressing, a preparation method and application, and particularly relates to the technical field of medical dressings, the body surface non-chronic wound nursing dressing is composed of silicon dioxide, calcium carbonate, medical albolene, medical liquid paraffin and medical absorbent gauze or spunlace non-woven fabric. Wherein the silicon dioxide has specific specific surface area and porosity, the calcium carbonate has proper particle size, and the medical albolene and the liquid paraffin keep a specific mass ratio. Through the synergistic effect of all the components, the dressing has the advantages that percolate is efficiently adsorbed, the antibacterial property is good, the wound healing environment is optimized, and the mechanical stability is enhanced. The preparation method comprises the steps of mixing, heating and stirring, coating and shaping and the like. The dressing is suitable for nursing non-chronic body surface wounds such as bruises, incisions and burns, can be replaced once every day during use, does not need to clean the surface of the wound, and can improve the compliance of a patient and promote wound healing.

Description

Technical Field

[0001] The present invention relates to the technical field of medical dressings, and more particularly to a dressing for caring for non-chronic wounds on body surfaces, a preparation method and applications thereof. Background Art

[0002] In the field of medical dressings, surface wound care has always been a research focus. With the development of medical technology and the improvement of people's requirements for wound healing quality, traditional surface wound care dressings have gradually exposed many defects.

[0003] Currently, some common dressings on the market suffer from poor adsorption capacity when treating non-chronic wounds. They are unable to effectively and promptly absorb wound exudate, leading to prolonged accumulation of exudate, which can easily lead to wound infection and delay healing. Furthermore, most dressings have limited antimicrobial efficacy and are unable to protect against the invasion of many common pathogens, further increasing the risk of wound infection.

[0004] Furthermore, these dressings struggle to strike a balance between moisture retention and breathability. They can be overly dry, leading to cracked and painful wounds and slow healing, or they can be inadequately breathable, leaving wounds in a damp, hot, and muggy environment, fostering bacterial growth. In actual use, some dressings can also cling tightly to wounds, easily causing secondary damage during dressing changes, causing additional pain for patients and reducing their compliance with treatment.

[0005] Therefore, a new type of non-chronic wound care dressing for body surface is proposed, which can effectively absorb exudate, has good antibacterial properties, balanced moisturizing and breathable properties, reduces the pain of dressing changes and accelerates wound healing. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a body surface non-chronic wound care dressing, a preparation method and an application thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a dressing for caring for non-chronic wounds on the body surface, comprising the following ingredients: silicon dioxide, calcium carbonate, medical white vaseline, medical liquid paraffin, chitosan, and medical absorbent gauze or spunlace non-woven fabric;

[0008] Wherein, the specific surface area of ​​the silicon dioxide is 200-500m 2 / g, porosity of 60-90%; the particle size of the calcium carbonate is 1-10 μm; the mass ratio of the medical white vaseline to the medical liquid paraffin is 1:1-1:3, and the added amount of the chitosan is 2-5% of the total mass of the dressing.

[0009] Through the synergistic effects of the adsorption and barrier effects of silica, the pH adjustment and coagulation function of calcium carbonate, the moisturizing and lubricating properties of medical white vaseline, and the liquid absorption and breathability of medical absorbent gauze / spunlace non-woven fabrics, wound exudate adsorption, infection risk reduction, healing environment optimization, and improved mechanical stability of the dressing are achieved. Silica with appropriate particle size and surface properties can have a positive effect on cell growth and proliferation, and can promote the growth and migration of fibroblasts and other cells related to wound healing, thereby accelerating the wound healing process.

[0010] Specifically, silica has a large specific surface area and porous structure, and has good adsorption properties. On the one hand, it can absorb exudate from the wound surface, keeping the wound moderately dry and facilitating wound healing; on the other hand, it can absorb odorous substances, reduce the odor generated by the wound, and improve the patient's medical experience.

[0011] By adding silica to inorganic dressings, the strength and toughness of the dressings can be improved, making them less likely to break during use, better protecting the wound, and easier to operate and fix.

[0012] It can also form a uniform protective film to effectively block external bacteria, dust and other pollutants from contacting the wound, reduce the risk of wound infection, and provide a relatively clean environment for wound healing.

[0013] Calcium carbonate can react with acidic substances in wound exudate to neutralize the acidity, thereby adjusting the local pH value of the wound and creating a suitable microenvironment for wound healing. Generally speaking, the ideal pH value for wound healing is slightly alkaline, and calcium carbonate helps adjust the wound environment to an alkaline direction that is conducive to healing.

[0014] Calcium carbonate can activate coagulation factors and accelerate blood coagulation, thereby playing a role in hemostasis. In wound treatment, rapid hemostasis is very important for preventing excessive bleeding and subsequent wound healing;

[0015] Calcium is an important component of human bones and teeth, and also plays a key role in the physiological functions of cells. During the wound healing process, an appropriate amount of calcium helps promote cell proliferation and differentiation, especially the growth of fibroblasts and the synthesis of collagen, which is beneficial to wound repair and tissue regeneration.

[0016] Calcium carbonate can be used as a filler to improve the physical properties of inorganic dressings, such as increasing the hardness, toughness and stability of the dressing, making the dressing easier to process, shape and use. At the same time, it can also adjust the air permeability and moisture permeability of the dressing, allowing the wound to "breathe" and facilitate wound healing.

[0017] Medical white vaseline has excellent moisturizing properties and can form a protective film on the skin surface, reducing moisture loss from the wound, preventing the wound from drying out and scabbing, which is beneficial to wound healing. At the same time, it can act as a lubricant to prevent the dressing from adhering to the wound surface, reducing irritation and secondary damage to the wound during dressing changes.

[0018] Medical white vaseline can be used as a physical barrier to isolate the wound from the external environment, preventing bacteria, dust and other pollutants from contacting the wound, and reducing the risk of wound infection. In addition, it can also reduce external friction on the wound and provide a relatively stable and safe environment for wound healing.

[0019] If the inorganic dressing contains some therapeutic drugs, medical white vaseline can help the drugs be evenly distributed on the wound surface and released slowly, prolonging the drug's action time and promoting better absorption of the drugs by the wound tissue, thereby enhancing the therapeutic effect of the drugs.

[0020] At the same time, chitosan contains a large number of amino groups (-NH2) on its molecular chain, which is positively charged and can adsorb negatively charged substances in wound exudate, such as bacterial endotoxins and inflammatory factors, through electrostatic action, complementing the physical adsorption of silica. Silica adsorbs liquids and odors through its high specific surface area and pore structure, while chitosan enhances the capture of large molecular impurities through charge action. The combination of the two can improve the adsorption efficiency and purification capacity of exudate. Chitosan can also destroy the integrity of bacterial cell membranes and inhibit their metabolic activities. It has a broad-spectrum antibacterial effect on common pathogens such as Staphylococcus aureus and Escherichia coli. The physical barrier of silica forms a protective film, which is combined with the chemical antibacterial mechanism of chitosan to construct a dual antibacterial system of "physical barrier + chemical inhibition", significantly reducing the risk of infection.

[0021] Secondly, chitosan can dissociate into H in an acidic environment. + , but it has a certain buffering capacity, forming a dynamic balance with the alkaline neutralization effect of calcium carbonate, and more accurately maintaining the wound pH at a weak alkaline level; calcium carbonate neutralizes the acidic substances in the exudate, and chitosan prevents excessive pH increase. The two work together to avoid the lag or over-regulation problems of single component regulation; chitosan can promote fibroblast proliferation and collagen synthesis, while releasing calcium ions, and together with the calcium element provided by calcium carbonate, it accelerates coagulation and tissue regeneration; calcium carbonate accelerates hemostasis by activating coagulation factors, and chitosan promotes wound repair through biocompatibility and cell affinity. The combination of the two can shorten the hemostasis time and accelerate the epithelialization process.

[0022] Preferably, the added amount of silicon dioxide is 5-15% of the total mass of the dressing, and the added amount of calcium carbonate is 3-10% of the total mass of the dressing.

[0023] Optimize the ratio of silica and calcium carbonate to ensure the best balance between adsorption performance and pH adjustment ability, and avoid excessive amounts that may increase the hardness of the dressing or reduce the permeability.

[0024] Preferably, the spunlace nonwoven fabric has a gram weight of 30-60 g / m 2 , the fiber porosity is 40-70%.

[0025] By controlling the gram weight and porosity of spunlace non-woven fabrics, their liquid absorption capacity, breathability and anti-adhesion properties are enhanced, thereby improving patient comfort.

[0026] Preferably, the mass ratio of the medical white vaseline to liquid paraffin is 1:2, and the total added amount of the two is 20-30% of the total mass of the dressing.

[0027] Optimize lubrication and moisturizing properties to prevent the dressing from adhering to the wound surface, while maintaining appropriate moisture permeability to avoid excessive dryness or moisture in the wound.

[0028] The present invention provides the following technical solution: a method for preparing the above-mentioned non-chronic wound care dressing on the body surface, comprising the following steps:

[0029] (1) Mix silicon dioxide and calcium carbonate in proportion and grind until uniform;

[0030] (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1) to form a paste matrix;

[0031] (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

[0032] Through the step-by-step mixing and coating process, the ingredients are evenly distributed to maintain the adsorption, lubricity and mechanical properties of the dressing.

[0033] Preferably, in step (2), the heating temperature is 70° C., the stirring rate is 200-400 rpm, and the stirring time is 30-60 minutes.

[0034] Precisely control temperature and stirring parameters to avoid ingredient decomposition or agglomeration and improve the stability of the paste matrix.

[0035] The present invention provides an application of a body surface non-chronic wound care dressing in the care of a body surface non-chronic wound, wherein the wound includes an abrasion, a cut or a burn.

[0036] Preferably, the dressing is changed once a day without cleaning the wound surface.

[0037] Reduce the frequency of dressing changes and operational complexity, reduce the risk of secondary injury, and improve patient compliance.

[0038] Beneficial effects of the present invention:

[0039] The present invention can efficiently absorb wound exudate and reduce the bacterial breeding environment through the synergistic effect of silicon dioxide, calcium carbonate, medical white vaseline, medical liquid paraffin, and medical absorbent gauze or spunlace non-woven fabric; the pH adjustment of calcium carbonate and the antibacterial properties of each component effectively reduce the risk of infection; medical white vaseline and liquid paraffin optimize the moisturizing and lubricating properties, avoid the dressing from adhering to the wound, keep the wound moderately moist, and create good conditions for healing; the reasonable combination of ingredients also enhances the mechanical stability of the dressing, making it easy to use; and the dressing can be changed once a day without cleaning the wound surface, which reduces the frequency of dressing changes and operational complexity, reduces the risk of secondary injury, improves patient compliance, and ultimately promotes rapid wound healing. DETAILED DESCRIPTION

[0040] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0041] Example 1

[0042] The present embodiment provides a non-chronic wound care dressing for the body surface, which is composed of the following ingredients: silicon dioxide added in an amount of 5% of the total mass of the dressing, with a specific surface area of ​​300m 2 / g, porosity 70%; calcium carbonate addition amount is 3% of the total mass of the dressing, particle size 5μm; medical white vaseline and medical liquid paraffin mass ratio is 1:2, the total addition amount is 20% of the total mass of the dressing; chitosan addition amount is 3% of the total mass of the dressing, and the gram weight is 30g / m 2 , spunlace nonwoven fabric with a fiber porosity of 40%.

[0043] The first embodiment provides a method for preparing a dressing for caring for non-chronic wounds on a body surface, comprising the following steps:

[0044] (1) Mix silicon dioxide, chitosan and calcium carbonate in proportion and grind until uniform;

[0045] (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1), heating temperature to 70° C., stirring speed 200 rpm, stirring time 30 minutes, to form a paste matrix;

[0046] (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

[0047] Example 2

[0048] The second embodiment provides a non-chronic wound care dressing for the body surface, which is composed of the following ingredients: silicon dioxide added in an amount of 10% of the total mass of the dressing, with a specific surface area of ​​400m 2 / g, porosity 80%; calcium carbonate addition amount is 6% of the total mass of the dressing, particle size 7μm; medical white vaseline and medical liquid paraffin mass ratio is 1:2, the total addition amount is 25% of the total mass of the dressing; chitosan addition amount is 3% of the total mass of the dressing; select 45g / m 2 , spunlace nonwoven fabric with a fiber porosity of 55%.

[0049] The second embodiment provides a method for preparing a dressing for caring for non-chronic wounds on a body surface, comprising the following steps:

[0050] (1) Mix silicon dioxide, chitosan and calcium carbonate in proportion and grind until uniform;

[0051] (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1), heating temperature to 70° C., stirring speed 300 rpm, stirring time 45 minutes, to form a paste matrix;

[0052] (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

[0053] Example 3

[0054] The third embodiment provides a non-chronic wound care dressing for the body surface, which is composed of the following ingredients: silicon dioxide added in an amount of 15% of the total mass of the dressing, with a specific surface area of ​​500 m 2 / g, porosity 90%; calcium carbonate addition amount is 10% of the total mass of the dressing, particle size 10μm; medical white vaseline and medical liquid paraffin mass ratio is 1:2, the total addition amount is 30% of the total mass of the dressing; chitosan addition amount is 3% of the total mass of the dressing; select 60g / m 2 , spunlace nonwoven fabric with a fiber porosity of 70%.

[0055] The third embodiment provides a method for preparing a dressing for caring for non-chronic wounds on a body surface, comprising the following steps:

[0056] (1) Mix silicon dioxide, chitosan and calcium carbonate in proportion and grind until uniform;

[0057] (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1), heating temperature to 70° C., stirring speed 400 rpm, stirring time 60 minutes, to form a paste matrix;

[0058] (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

[0059] Example 4

[0060] The fourth embodiment provides a non-chronic wound care dressing for the body surface, comprising the following components: silicon dioxide added in an amount of 8% of the total mass of the dressing, with a specific surface area of ​​350 m 2 / g, porosity 75%; calcium carbonate addition amount is 5% of the total mass of the dressing, particle size 3μm; the mass ratio of medical white vaseline to medical liquid paraffin is 1:1, and the total addition amount is 22% of the total mass of the dressing; the addition amount of chitosan is 3% of the total mass of the dressing, and medical absorbent gauze is selected.

[0061] The fourth embodiment provides a method for preparing a dressing for caring for non-chronic wounds on a body surface, comprising the following steps:

[0062] (1) Mix silicon dioxide, chitosan and calcium carbonate in proportion and grind until uniform;

[0063] (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1), heating temperature to 60° C., stirring speed 250 rpm, stirring time 40 minutes, to form a paste matrix;

[0064] (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

[0065] Example 5

[0066] The fifth embodiment provides a non-chronic wound care dressing for the body surface, which is composed of the following ingredients: silicon dioxide added in an amount of 12% of the total mass of the dressing, with a specific surface area of ​​450 m 2 / g, porosity 85%; calcium carbonate addition amount is 8% of the total mass of the dressing, particle size 8μm; the mass ratio of medical white vaseline to medical liquid paraffin is 1:3, and the total addition amount is 28% of the total mass of the dressing; the addition amount of chitosan is 3% of the total mass of the dressing, and medical absorbent gauze is selected.

[0067] The fifth embodiment provides a method for preparing a dressing for caring for non-chronic wounds on a body surface, comprising the following steps:

[0068] (1) Mix silicon dioxide, chitosan and calcium carbonate in proportion and grind until uniform;

[0069] (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1), heating temperature to 80° C., stirring speed 350 rpm, stirring time 50 minutes, to form a paste matrix;

[0070] (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

[0071] Comparative Example 1: The amount of silicon dioxide added was reduced to 3%, and the other ingredients and preparation parameters were the same as those of Example 2.

[0072] Comparative Example 2: The particle size of calcium carbonate was increased to 15 μm, and the other ingredients and preparation parameters were the same as those of Example 3.

[0073] Comparative Example 3: The mass ratio of medical white vaseline to medical liquid paraffin was changed to 1:4, and the other ingredients and preparation parameters were the same as those in Example 4.

[0074] Comparative Example 4: Select weight 20g / m 2 The spunlace nonwoven fabric has a fiber porosity of 30%, and the other components and preparation parameters are the same as those in Example 1.

[0075] Comparative Example 5: No calcium carbonate was added, and other ingredients and preparation parameters were the same as those in Example 2.

[0076] Comparative Example 6: Ordinary gauze (similar to the low weight and low porosity of Comparative Example 4) was used as the dressing. Other ingredients and preparation parameters were the same as those of Example 1, but the non-woven fabric designed by the present invention was not used.

[0077] Test method

[0078] Exudate adsorption performance test: Take a certain area of ​​dressing and place it on the surface of simulated wound exudate (a mixture of saline and protein). After soaking for 10 minutes, take it out and use filter paper to absorb the excess liquid on the surface. Then weigh it to calculate the adsorption amount.

[0079] Antibacterial performance test: Using the agar diffusion method, the dressing was placed on an agar plate inoculated with common wound infection bacteria (such as Staphylococcus aureus and Escherichia coli). After incubation for 24 hours, the diameter of the inhibition zone was measured.

[0080] Moisture retention performance test: Place the dressing in a certain humidity environment (50% relative humidity), weigh it every 2 hours, and calculate the water loss rate.

[0081] Effect of calcium carbonate on pH regulation: Prepare multiple groups of simulated wound exudate samples, each with the same volume of 100 mL, and adjust the initial pH value to 5.5-6.5 (simulating the acidic environment of wound exudate).

[0082] The dressings of different embodiments and comparative examples were cut into pieces of the same area (5 cm×5 cm) and placed in simulated wound exudate samples respectively.

[0083] Place the sample in a constant temperature environment at 37°C, measure the pH value of the exudate using a pH meter every hour, and record the changes in pH value within 24 hours.

[0084] Test on the influence of non-woven fabric weight on air permeability: Use an air permeability tester and calibrate it according to the instrument operating instructions.

[0085] The nonwoven fabrics used in the various Examples and Comparative Examples were cut into a standard test size (a circle with a diameter of 70 mm).

[0086] Install the non-woven fabric sample on the air permeability tester, set the test pressure to 500Pa, measure the air flow rate per unit time through the non-woven fabric per unit area, and record the data in L / (m 2 ·s).

[0087] Experiment on the effect of dressing on shortening wound healing time: 60 healthy adult SD rats were selected and circular incision wounds of the same size (about 1.5 cm in diameter) were made on their backs.

[0088] The rats were randomly divided into 10 groups, with 6 rats in each group. The rats were bandaged with the dressings of Examples 1-5 and Comparative Examples 1-5 respectively, while the Comparative Example 6 group was bandaged with ordinary gauze.

[0089] Observe the wound healing status every day and record the time when the wound is completely epithelialized (the wound surface is completely covered by the new epithelium) to the nearest day.

[0090] Experiment on the effect of dressing change frequency on patient comfort: 60 patients with non-chronic wounds on the body surface (wound types include abrasions, cuts, shallow burns, etc.) were recruited and randomly divided into 6 groups, with 10 people in each group.

[0091] Six groups of patients were treated with the dressing of Example 2 at different dressing change frequencies: Group A had a dressing change once a day, Group B had a dressing change once every 2 days, Group C had a dressing change once every 3 days, Group D had a dressing change once every 4 days, Group E had a dressing change once every 5 days, and Group F had a dressing change once every 6 days.

[0092] During each dressing change, patients were asked to rate the pain level during the dressing change using a visual analogue scale (VAS) (0 = no pain, 10 = severe pain), and were asked about their acceptance of the dressing change frequency (divided into five levels: very satisfied, satisfied, average, dissatisfied, and very dissatisfied), and the data were recorded.

[0093] The above test data are summarized in Table 1 below.

[0094] Table 1: Summary of dressing test data

[0095]

[0096]

[0097] As shown in the examples, increasing the amount of silicon dioxide and calcium carbonate added increases exudate adsorption, antimicrobial properties, and pH adjustment capabilities, as shown in Examples 1 to 3. However, when too little silicon dioxide is added (Comparative Example 1), adsorption and antimicrobial properties significantly decrease. Excessively large calcium carbonate particle size (Comparative Example 2) can affect its effectiveness in the dressing, leading to a reduction in some performance. When no calcium carbonate is added (Comparative Example 5), pH adjustment capabilities are significantly weakened.

[0098] Increasing the weight and porosity of the spunlace nonwoven fabric increased the tensile strength and air permeability of the dressing, while also improving its adsorption and moisture retention properties to a certain extent. Example 3 performed best. A nonwoven fabric with too low a weight and low porosity (Comparative Example 4) deteriorated various dressing properties, especially air permeability and mechanical properties. Ordinary gauze (Comparative Example 6) exhibited far lower overall performance than the dressing designed in this invention.

[0099] The dressings of the examples were able to effectively shorten wound healing time compared to the comparative examples, with Example 3 having the shortest healing time. In a test on the effect of dressing change frequency on patient comfort, overall patient satisfaction was high when dressing changes were performed once daily (Examples 1 to 5). As the dressing change frequency decreased (as in the comparative examples), the VAS score increased and patient satisfaction decreased, indicating that a reasonable dressing change frequency helps improve patient comfort and treatment compliance.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dressing for caring for non-chronic wounds on the body surface, characterized in that: The invention is composed of the following ingredients: silicon dioxide, calcium carbonate, medical white vaseline, medical liquid paraffin, chitosan and medical absorbent gauze or spunlace non-woven fabric; wherein the specific surface area of ​​the silicon dioxide is 200-500m 2 / g, a porosity of 60-90%; the particle size of the calcium carbonate is 1-10 μm; the mass ratio of the medical white vaseline to the medical liquid paraffin is 1:1-1:3; The added amount of the calcium carbonate is 3-10% of the total mass of the dressing.

2. The non-chronic wound care dressing according to claim 1, characterized in that: The added amount of the silicon dioxide is 5-15% of the total mass of the dressing, and the added amount of the chitosan is 2-5% of the total mass of the dressing.

3. The dressing for caring for non-chronic wounds on a body surface according to claim 1, characterized in that: The spunlace nonwoven fabric has a gram weight of 30-60 g / m 2 , the fiber porosity is 40-70%.

4. The dressing for caring for non-chronic wounds on a body surface according to claim 1, characterized in that: The mass ratio of the medical white vaseline to the liquid paraffin is 1:2, and the total amount of the two added is 20-30% of the total mass of the dressing.

5. A method for preparing the dressing for caring for non-chronic wounds on a body surface according to any one of claims 1 to 4, characterized in that: The following steps are involved: (1) Mix silicon dioxide, chitosan and calcium carbonate in proportion and grind until uniform; (2) heating medical white vaseline and liquid paraffin to 60-80° C., stirring and mixing, and then adding the mixture of step (1) to form a paste matrix; (3) The paste matrix is ​​evenly coated on the surface of medical absorbent gauze or spunlace non-woven fabric, and after cooling and shaping, it is cut and packaged.

6. The method for preparing a dressing for caring for non-chronic wounds on a body surface according to claim 5, characterized in that: In step (2), the heating temperature is 70° C., the stirring rate is 200-400 rpm, and the stirring time is 30-60 minutes.

7. Use of the dressing for caring for non-chronic wounds on a body surface according to any one of claims 1 to 4 in caring for non-chronic wounds on a body surface, characterized in that: The wounds include abrasions, cuts or burns.

8. The use of a dressing for caring for non-chronic wounds on a body surface according to claim 7, characterized in that: The dressing is changed once a day without cleaning the wound surface.

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