Medical dressing used in plateau environment

Abstract

This invention relates to the field of medical wound dressing technology, and discloses a medical dressing for use in high-altitude environments, including a dressing component and a functional component. The dressing component includes a dressing body, a retractable frame, and a one-way valve. The dressing body covers the patient's wound, and the retractable frame is provided on the dressing body. The retractable frame only expands and contracts when the ambient air pressure on the side of the patient's wound changes. A hydrogel layer is provided on the side of the dressing body closest to the patient's wound. An air hole is provided through the dressing body, and the one-way valve is located at the air hole and restricts the flow of fluid from the side of the patient's wound to the external environment. The air outlet of the functional component is connected to the air inlet of the one-way valve, and the functional component introduces fluid into the side of the dressing body closest to the patient's wound. This allows the patient to minimize the impact of environmental stressors on wound healing even at high altitudes, thereby solving the problem that traditional dry dressings in the prior art cannot simultaneously provide moisturizing, pressurizing, and oxygen therapy functions.

Description

Technical Field

[0001] This invention relates to the field of medical wound dressing technology, and in particular to a medical dressing for use in high-altitude environments. Background Technology

[0002] High-altitude areas (above 3000 m) present significant challenges to human physiological functions and wound healing due to their unique environment characterized by low oxygen, low air pressure, low humidity, and strong ultraviolet radiation. Medically speaking, altitude is an environmental stressor that can alter bodily functions and metabolism. Therefore, in high-altitude areas, wounds are more prone to problems such as fat liquefaction, hematoma, and slow healing. The pathophysiological process of wound healing also has its unique characteristics: under hypoxic conditions, tissue hypoxia leads to decreased fibroblast proliferation and collagen synthesis, thus delaying wound healing. Simultaneously, the dry climate of high-altitude areas causes wounds to easily lose moisture, resulting in accelerated scab formation and reduced exudate, which is detrimental to wound regeneration and repair in a moist healing environment. In high-altitude environments, the body may experience systemic symptoms such as hypoxemia, polycythemia vera, immune and endocrine system disorders, and malnutrition, all of which can affect wound healing and ultimately lead to difficult-to-heal wounds.

[0003] Traditional dry dressings such as gauze, cotton pads, and waterproof dressings are difficult to maintain wound moisture in high-altitude environments, often requiring frequent changes, increasing patient suffering and the medical burden. Developing dressings with moisturizing, pressure-inducing, and oxygen-therapy functions suitable for the unique conditions of high altitudes has become an urgent need in the field of wound repair. Summary of the Invention

[0004] The purpose of this invention is to provide a medical dressing for use in high-altitude environments, which solves the problem that traditional dry dressings in the prior art cannot simultaneously provide moisturizing, pressurizing and oxygen therapy functions.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a medical dressing for use in high-altitude environments, comprising a dressing component and a functional component; The dressing assembly includes a dressing body, a retractable skeleton, and a one-way valve. The dressing body covers the patient's wound. The retractable skeleton is provided on the dressing body. The retractable skeleton only expands and contracts when the ambient air pressure on the side of the patient's wound changes. A hydrogel layer is provided on the side of the dressing body close to the patient's wound. An air hole is provided through the dressing body, and the one-way valve is located at the air hole and restricts the flow of fluid from the side of the patient's wound into the external environment. The air outlet of the functional component is connected to the air inlet of the one-way valve, and the functional component introduces fluid into the side of the dressing body that is close to the patient's wound.

[0006] As an optional feature, the side of the dressing body that is in contact with the external environment is also provided with a sterile protective film.

[0007] As an optional solution, the functional component includes a functional plug and a sealing plug; The functional plug has an air inlet and an air outlet. The air inlet of the functional plug is sealed with a sealing plug, and the air outlet of the functional plug is connected to the air inlet of the one-way valve. The functional plug has an oxygen-generating chamber on the airway for fluid flow, and the oxygen-generating chamber is equipped with oxygen-generating material.

[0008] As an optional option, the oxygen-generating material is hydrogen peroxide or sodium percarbonate.

[0009] As an optional solution, the outlet of the functional plug is fixedly connected to the inlet of the one-way valve by a thread.

[0010] As an optional solution, the functional components include an air inlet pipe, an air outlet pipe, and a humidification bottle; The air inlet end of the air inlet pipe is connected to the external environment, and the air outlet end of the air inlet pipe is connected to the air inlet end of the humidification bottle. The inlet end of the vent pipe is connected to the outlet end of the humidification bottle, and the outlet end of the vent pipe is connected to the inlet end of the one-way valve.

[0011] The present invention has the following unexpected beneficial effects: 1. This invention provides a hydrogel layer on the side of the dressing body closest to the patient's wound to ensure wound moisture. The dressing body is equipped with a one-way valve to restrict fluid flow from the wound side to the external environment and a stretchable frame that expands and contracts only when the ambient air pressure on the wound side changes. The air outlet of the functional component is connected to the air inlet of the one-way valve. Therefore, when the air pressure in the environment where the patient's wound is located is too low, the functional component can fill the wound with gas through the one-way valve to improve the wound environment and prevent a decrease in the proliferation capacity of fibroblasts and the synthesis capacity of collagen. This solves the problem that traditional dry dressings in the prior art cannot simultaneously provide moisturizing, pressurizing, and oxygen therapy functions.

[0012] 2. The dressing body of the present invention is provided with a retractable skeleton. Since the retractable skeleton has a certain rigidity, it can provide tension for the soft dressing, thereby preventing the dressing body from easily breaking due to the patient's movement.

[0013] 3. The dressing body of the present invention, together with the sterile protective film, seals the patient's wound in a closed environment, effectively isolating it from the harsh environment of the external plateau (such as strong ultraviolet rays, low temperature, dust, etc.), and greatly reducing the risk of infection of the patient's wound. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the medical dressing according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the functional plug of the medical dressing according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the components of a humidification bottle for medical dressings according to an embodiment of the present invention; In the diagram, 1 is the main body of the dressing; 101 is the hydrogel layer; 2 is the stretchable skeleton; 3 is the one-way valve; 4 is the functional plug; 401 is the air inlet; 402 is the air outlet; 5 is the sealing plug; 6 is the air inlet pipe; 7 is the humidification bottle; and 8 is the air outlet pipe. Detailed Implementation

[0015] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0016] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] In the description of this invention, it should be understood that the terms "connected," "linked," and "fixed," etc., used in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0018] In one embodiment, such as Figures 1 to 3 As shown, in a first aspect, the present invention provides a medical dressing for use in high-altitude environments, characterized in that it includes a dressing component and a functional component.

[0019] The dressing assembly includes a dressing body 1, a retractable frame 2, and a one-way valve 3. The dressing body 1 covers the patient's wound, and the retractable frame 2 is mounted on the dressing body 1. The retractable frame 2 extends and retracts only when the ambient air pressure on the side of the patient's wound changes. The structure of the retractable skeleton 2 is not further limited here. The material of the retractable skeleton 2 can be a flexible polymer elastomer material, such as medical-grade silicone, TPU and natural rubber. The retractable skeleton 2 is composed of four corrugated tubes made of this material.

[0020] The dressing body 1 has a hydrogel layer 101 on the side close to the patient's wound. The dressing body 1 has a through-hole, which is located directly above the patient's wound. The one-way valve 3 is located at the through-hole and restricts the flow of fluid from the patient's wound to the external environment. The one-way valve 3 is a common medical one-way valve 3.

[0021] The hydrogel layer 101 is made of the same material used in existing hydrocolloid dressings, which has good water retention properties, so it will not be described in detail here.

[0022] The design of the one-way valve 3 here is not only to ensure one-way ventilation of the environment, but also to prevent erroneous operation caused by accidental touch or damage by patients or medical staff. This ensures that the ambient air pressure on the side of the patient's wound is always within the range recommended by the doctor.

[0023] The air outlet of the functional component is connected to the air inlet of the one-way valve 3, and the functional component introduces fluid into the side of the dressing body 1 that is close to the patient's wound.

[0024] The retractable skeleton 2 can be set inside the interlayer of the dressing body 1. When the air pressure decreases at high altitudes, the pressure difference between the external atmospheric pressure and the environment on the patient's wound side increases, thereby compressing the skeleton. At this time, the functional component introduces gas into the environment on the patient's wound side through the one-way valve 3, increasing the internal pressure of the dressing body 1. The retractable skeleton 2 expands and rebounds. This structure of the retractable skeleton 2 can better provide tension to the dressing body 1, effectively preventing the dressing body 1 from collapsing as a whole in a low-pressure environment, thus providing a stable healing space for the patient's wound. Furthermore, when the retractable skeleton 2 expands and contracts within the interlayer, it will cause the surface of the dressing body 1 to concave or convex. When the air pressure changes, it can make the hydrogel layer 101 of the dressing body 1 approach or move away from the wound, allowing the doctor to adjust the distance between the hydrogel layer 101 and the wound according to the patient's wound type and actual situation. It should be noted that, to ensure the patient's safety, the design of this structure of the retractable skeleton 2 must take into account that, under extreme damage, the retractable skeleton 2 will not puncture the inner layer of the dressing body 1 and cause secondary injury.

[0025] The retractable frame 2 can also be set on the outer surface of the dressing body 1. In this case, the retractable frame 2 is similar to a "tent frame" attached to the outer surface of the dressing body 1. The retractable frame 2 helps the dressing body 1 resist external air pressure and prevents it from being crushed. The retractable frame 2 visualizes the air pressure changes in the environment where the patient's wound is located. On-site personnel can directly judge whether the air pressure in the environment where the patient's wound is located has changed through the state of the retractable frame 2 and then adjust it through functional components, thus maximizing the protection of the self-healing effect of environmental stressors on the wound. From the structural point of view, the retractable frame 2 does not pose a risk of contact with the wound and has low requirements for the process, which is conducive to production and integration.

[0026] Based on this, the dressing body 1 isolates the space where the patient's wound is located from the external environment, forming a stable healing space. The hydrogel layer 101 set on the side of the dressing body 1 close to the patient's wound ensures the humidity of the patient's wound surface. The stretchable skeleton 2 is set on the dressing body 1 to prevent the dressing body 1 from cracking. The dressing body 1 is equipped with a one-way valve 3. The air outlet of the functional component is connected to the air inlet of the one-way valve 3 to introduce gas or liquid into the side of the dressing body 1 close to the patient's wound, thereby improving the healing environment of the patient's wound and reducing environmental irritants. This solves the problem that traditional dry dressings in the prior art cannot simultaneously achieve moisturizing, pressurizing and oxygen therapy functions.

[0027] Furthermore, such as Figures 1 to 3 As shown, a sterile protective film is also provided on the side of the dressing body 1 that is close to the external environment. The sterile protective film serves as a second physical barrier in addition to the dressing body 1. Depending on its material, it can have functions such as waterproofing, UV protection, impermeability, and microbial invasion prevention. Therefore, the dressing body 1 can provide further protection for the patient's wound and avoid the impact of the changeable climate at high altitudes.

[0028] Furthermore, such as Figures 1 to 3 As shown, the functional component includes a functional plug 4 and a sealing plug 5.

[0029] The functional plug 4 is provided with an air inlet 401 and an air outlet 402. The air inlet 401 of the functional plug 4 is sealed with a sealing plug 5, and the air outlet 402 of the functional plug 4 is connected to the air inlet end of the one-way valve 3.

[0030] When the air pressure in the environment where the patient's wound is located is high, remove the sealing plug 5 to release the pressure.

[0031] The functional plug 4 has an oxygen-generating chamber on the airway for fluid flow, and the oxygen-generating chamber is equipped with oxygen-generating material.

[0032] The oxygen-generating material is hydrogen peroxide or sodium percarbonate.

[0033] The functional plug 4 generates oxygen instantly through a chemical reaction (hydrogen peroxide / sodium percarbonate decomposes in water or body fluids) and acts directly on the wound. As a "ready-to-use" and "built-in" oxygen supply solution, it is highly suitable for extreme high-altitude environments where stable medical resources are unavailable, such as field operations, disaster relief, and individual soldier carrying, ensuring the timeliness and reliability of treatment.

[0034] Regarding the two oxygen-generating materials, hydrogen peroxide is corrosive, but it has high stability and safety. It has high oxygen-generating efficiency and can react with the addition of a catalyst. It is simple to operate and can stably release oxygen. Sodium percarbonate, as a solid reagent, is easy to store and has good stability. However, when it generates oxygen, an appropriate amount of water needs to be added to the container, which requires personnel to have certain professional knowledge.

[0035] Furthermore, such as Figures 1 to 3 As shown, the air outlet 402 of the functional plug 4 is fixedly connected to the air inlet of the one-way valve 3 by a thread. The air outlet 402 of the functional plug 4 is provided with an outer ring thread, and the air inlet of the one-way valve 3 is provided with an inner ring thread. This connection method ensures the stability and ease of connection between the functional plug 4 and the one-way valve 3. In the field, the functional plug 4 and the one-way valve 3 can be firmly connected together in the shortest time.

[0036] Furthermore, such as Figures 1 to 3 As shown, the functional components include an air inlet pipe 6, an air outlet pipe 8, and a humidification bottle 7.

[0037] The air inlet end of the air inlet pipe 6 is connected to the external environment, and the air outlet end of the air inlet pipe 6 is connected to the air inlet end of the humidification bottle 7.

[0038] The air inlet of the air outlet pipe 8 is connected to the air outlet of the humidification bottle 7, and the air outlet of the air outlet pipe 8 is connected to the air inlet of the one-way valve 3.

[0039] The air inlet end of the air inlet pipe 6 can be connected to the external environment, so it can be connected to the hospital's central oxygen supply system or oxygen cylinder to achieve long-term, stable and controllable oxygen or humidified gas supply. The humidified oxygen can prevent the wound from drying out due to dry oxygen, and avoid the problems of accelerated scab formation and reduced exudate in the patient's wound. Therefore, the functional component is more suitable for rear hospitals, fixed medical points and other stable high-altitude medical institutions, complementing the "functional plug 4", thereby covering the entire application scenario from the front line to the rear.

[0040] The dressing body 1 is applied to the patient's wound to create a sealed environment. The hydrogel layer 101 close to the wound continuously improves the wound environment. When the one-way valve 3 is connected to the functional plug 4, the operator judges the air pressure environment on the wound side based on the extension and retraction of the expandable skeleton 2 and the expansion degree of the dressing body 1. When pressurization is needed, the oxygen-generating chamber of the functional plug 4 starts to supply oxygen to the one-way valve 3. When depressurization is needed, the sealing plug 5 on the air outlet 402 is removed, and a flexible tube is inserted through the air passage between the air inlet 401 and the air outlet 402 of the functional plug 4. The flexible tube enters the space where the patient's wound is located, connecting the space where the patient's wound is located with the external space to balance the internal and external air pressure, thereby achieving the purpose of depressurization. When the one-way valve 3 is connected to the air outlet pipe 8 and other equipment, the air pressure environment on the wound side can be achieved by connecting the inlet end of the air inlet pipe 6 to an oxygen supply or oxygen inhalation device.

[0041] In summary, the hydrogel on the side of the dressing body 1 that is close to the patient's wound alters the humidity of the wound environment. The expandable skeleton 2 on the dressing body 1 improves the tensile strength of the dressing body 1 while amplifying the air pressure changes in the patient's wound environment through its expansion and contraction. The one-way valve 3 and functional components on the dressing body 1 work together to supply oxygen and balance the air pressure environment of the patient's wound. This allows the patient to minimize the impact of environmental stressors on wound recovery, even at high altitudes. This solves the problem that traditional dry dressings in the prior art cannot simultaneously provide moisturizing, pressurizing, and oxygen therapy functions.

[0042] It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A medical dressing for use at high altitudes, characterized in that: Includes dressing components and functional components; The dressing assembly includes a dressing body (1), a retractable frame (2), and a one-way valve (3). The dressing body (1) covers the patient's wound. The retractable frame (2) is provided on the dressing body (1). The retractable frame (2) only expands and contracts when the ambient air pressure on one side of the patient's wound changes. A hydrogel layer (101) is provided on the side of the dressing body (1) close to the patient's wound. An air hole is opened through the dressing body (1), and the one-way valve (3) is located at the air hole and restricts the flow of fluid from one side of the patient's wound into the external environment. The air outlet of the functional component is connected to the air inlet of the one-way valve (3), and the functional component introduces fluid into the side of the dressing body (1) close to the patient's wound.

2. The medical dressing of claim 1, wherein: The dressing body (1) is also provided with a sterile protective film on the side that is close to the external environment.

3. The medical dressing according to claim 1, characterized in that: The functional components include a functional plug (4) and a sealing plug (5); The functional plug (4) is provided with an air inlet (401) and an air outlet (402). The air inlet (401) of the functional plug (4) is closed with a sealing plug (5). The air outlet (402) of the functional plug (4) is connected to the air inlet end of the one-way valve (3). The functional plug (4) has an oxygen-generating chamber on the airway for fluid flow, and the oxygen-generating chamber is provided with oxygen-generating material.

4. The medical dressing according to claim 3, characterized in that: The oxygen-generating material is hydrogen peroxide or sodium percarbonate.

5. The medical dressing of claim 3, wherein: The outlet (402) of the functional plug (4) is fixedly connected to the inlet of the one-way valve (3) by a thread.

6. The medical dressing of claim 1, wherein: The functional components include an air inlet pipe (6), an air outlet pipe (8), and a humidification bottle (7). The air inlet end of the air inlet pipe (6) is connected to the external environment, and the air outlet end of the air inlet pipe (6) is connected to the air inlet end of the humidification bottle (7). The inlet end of the vent pipe (8) is connected to the outlet end of the humidification bottle (7), and the outlet end of the vent pipe (8) is connected to the inlet end of the one-way valve (3).

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