Chitosan dressing

Abstract

The utility model provides a chitosan dressing. The chitosan dressing comprises an outer cylinder and a plunger, the plunger extends into the outer cylinder and can slide in the outer cylinder, a sealing cover is arranged at one end of the outer cylinder, chitosan non-woven fabric is arranged in the outer cylinder, the chitosan non-woven fabric is located between the plunger and the sealing cover, and the plunger can slide in the outer cylinder. And chitosan gel is arranged in the chitosan non-woven fabric. The chitosan non-woven fabric is used for wrapping the chitosan gel, the chitosan non-woven fabric is arranged in the outer cylinder with the plunger, the structure is simple, the use is convenient, the medicine effect of the chitosan gel can be fully exerted, and the healing of the wound surface after the hemorrhoid operation is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, in particular to a chitosan dressing. Background Art

[0002] The most common anorectal diseases in clinical practice can be classified into four major diseases: hemorrhoids, anal fissure, anal fistula, and perianal abscess. Among them, hemorrhoids account for 98.08% of all anorectal diseases. The anus has special physiological characteristics and anatomical structures. The wound of anorectal surgery belongs to an open and contaminated wound. In addition, due to various adverse factors such as postoperative wound dressing packing, postoperative defecation traction, dressing change stimulation, and fecal residue on the wound surface, the wound healing of patients is slow, protracted, the pain is aggravated, the hospital stay is prolonged, and normal life and work are affected.

[0003] Chitosan has good effects such as hemostasis, analgesia, bacteriostasis, and promoting wound healing. Using it as an active ingredient in the postoperative care dressing for hemorrhoids can exert excellent effects such as hemostasis, analgesia, and promoting wound healing. The existing hemorrhoid dressing products have the following disadvantages: 1) The chitosan content in the chitosan gel is only 1%, and its healing effect on the postoperative wound of hemorrhoids is limited; 2) The viscosity of the chitosan gel is relatively low, with a certain fluidity, and it cannot closely adhere to the postoperative wound, making it difficult to fully exert the efficacy of chitosan; 3) The chitosan gel does not have a liquid absorption function, and additional dressings such as gauze are needed to assist in liquid absorption, resulting in cumbersome operation and increased workload for clinicians in actual use; 4) During the use of the product, it is inevitable that the chitosan gel will remain in the syringe, causing waste of resources. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a chitosan dressing to fully exert the efficacy of chitosan and improve the convenience during use.

[0005] To solve the above technical problems, the technical solution of the present model is as follows:

[0006] A chitosan dressing, comprising:

[0007] An outer cylinder and a plunger. The plunger extends into the interior of the outer cylinder and can slide within the outer cylinder. One end of the outer cylinder is provided with a sealing cover. The interior of the outer cylinder is provided with a chitosan non-woven fabric, and the chitosan non-woven fabric is located between the plunger and the sealing cover. The chitosan non-woven fabric contains chitosan gel.

[0008] Optionally, a sealing gasket is installed at one end of the plunger extending into the outer cylinder, and the chitosan non-woven fabric is located between the sealing gasket and the sealing cover.

[0009] Optionally, the length of the outer cylinder is 8 to 12 centimeters.

[0010] Optionally, the diameter of the outer cylinder is 0.2 to 1 cm.

[0011] Optionally, the grammage of the chitosan non-woven fabric is 50 to 200 g / m 2 .

[0012] Optionally, the chitosan gel is cylindrical, with a length of 3 to 5 cm and a diameter of 0.2 to 1 cm.

[0013] Optionally, the weight of the chitosan gel is 2 to 10 grams.

[0014] Optionally, the materials of the outer cylinder and the plunger are both medical-grade polypropylene.

[0015] Optionally, the chitosan non-woven fabric is made of water-soluble material.

[0016] Optionally, the material of the gasket is rubber.

[0017] The above solution of the present utility model has at least the following beneficial effects:

[0018] With the above solution of the present utility model, the chitosan gel is wrapped with a chitosan non-woven fabric and placed in an outer cylinder with a plunger. The structure is simple and easy to use, which can give full play to the medicinal effect of the chitosan gel and accelerate the healing of the wound surface after hemorrhoid surgery. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the chitosan dressing according to an embodiment of the present utility model;

[0020] Figure 2 is a working principle diagram of the chitosan dressing according to an embodiment of the present utility model.

[0021] Description of the reference numerals: 1 - outer cylinder, 11 - sealing cover, 2 - plunger, 21 - gasket, 3 - chitosan non-woven fabric, 4 - chitosan gel, 5 - exudate. Detailed Embodiments

[0022] The exemplary embodiments of the present utility model will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be completely conveyed to those skilled in the art.

[0023] As Figure 1 shown, an embodiment of the present utility model provides a chitosan dressing, comprising:

[0024] An outer cylinder 1 and a plunger 2, the plunger 2 extends into the interior of the outer cylinder 1 and is slidable within the outer cylinder 1. One end of the outer cylinder 1 is provided with a sealing cover 11. Inside the outer cylinder 1, there is a chitosan non-woven fabric 3, and the chitosan non-woven fabric 3 is located between the plunger 2 and the sealing cover 11. Inside the chitosan non-woven fabric 3, there is a chitosan gel 4.

[0025] The chitosan dressing proposed in the embodiment of the present utility model uses a chitosan non-woven fabric to wrap the chitosan gel and places it in an outer cylinder with a plunger. It has a simple structure and is convenient to use, can fully exert the medicinal effect of the chitosan gel, and accelerate the healing of the wound surface after hemorrhoid surgery.

[0026] Specifically, one end of the outer cylinder 1 is provided with an inlet for the plunger 2 to extend into, and the other end is also provided with an outlet for the chitosan non-woven fabric and the chitosan gel to be extruded from the outer cylinder 1.

[0027] Specifically, as Figure 1 shown, the sealing cover 11 can be sleeved on the outer wall of the outer cylinder 1; the sealing cover 11 can also be sleeved on the inner wall of the outer cylinder 1 to play a plugging role, protecting the chitosan non-woven fabric from wrapping the chitosan gel, and at the same time facilitating the removal of the sealing cover 11 during use. The material of the sealing cover 11 can be rubber or the same as the material of the outer cylinder 1, such as medical-grade polypropylene.

[0028] In an alternative embodiment of the present utility model, a sealing gasket 21 is installed at one end of the plunger 2 extending into the outer cylinder 1, and the chitosan non-woven fabric 3 is located between the sealing gasket 21 and the sealing cover 11.

[0029] Specifically, one end of the plunger extends into the outer cylinder, and the other end has a length outside the outer cylinder. During use, the sealing cover at the outlet of the outer cylinder is removed, and one end of the plunger is pushed, so that the other end of the plunger pushes the chitosan non-woven fabric and the chitosan gel inside the chitosan non-woven fabric in the outer cylinder to be exposed from the outlet and applied to the affected area. It is convenient to use, avoids direct contact of foreign objects with the chitosan gel, and improves the safety of use. A sealing gasket is installed at the other end of the plunger, and the sealing gasket is in close contact with the inner wall of the outer cylinder, improving the sealing performance of the outer cylinder, increasing the contact area with the chitosan non-woven fabric, and avoiding the problem of chitosan gel remaining in the outer cylinder during drug administration and causing waste of resources.

[0030] In an alternative embodiment of the present utility model, the length of the outer cylinder 1 is 8 to 12 centimeters.

[0031] Specifically, the length of the outer cylinder can be adjusted according to the actual situation. In this embodiment, the length of the outer cylinder is 8 to 12 centimeters, which is convenient for carrying, transportation and storage, and improves the convenience of use.

[0032] In an alternative embodiment of the present utility model, the diameter of the outer cylinder 1 is 0.2 to 1 centimeter.

[0033] Specifically, the diameter of the outer cylinder can be adjusted according to the actual situation. In this embodiment, the diameter of the outer cylinder is 0.2 to 1 cm, which can not only fully accommodate the chitosan gel but also avoid the problem of inconvenient use caused by too large a diameter of the outer cylinder.

[0034] In an alternative embodiment of the present utility model, the grammage of the chitosan non-woven fabric 3 is 50 to 200 g / m 2 .

[0035] Specifically, the grammage of the chitosan non-woven fabric is set to 50 to 200 g / m 2 , so that it has good air permeability, can reduce costs and help the wound to heal.

[0036] In an alternative embodiment of the present utility model, the chitosan gel 4 is cylindrical, with a length of 3 to 5 cm and a diameter of 0.2 to 1 cm.

[0037] Specifically, the chitosan gel is set to be cylindrical, which is convenient to be arranged in the outer cylinder. Its length and diameter can be set according to the length and diameter of the outer cylinder, or according to the actual application scenario.

[0038] In an alternative embodiment of the present utility model, the chitosan gel 4 is an anhydrous matrix chitosan gel, and the composition of the anhydrous matrix chitosan gel 4 is a mixture of chitosan, polyethylene glycol, carbomer, propylene glycol, polyvinylpyrrolidone, triethanolamine and glycerol.

[0039] Specifically, the anhydrous matrix chitosan gel itself has a certain viscosity and is loaded into the chitosan non-woven fabric through a coating device. Here, the viscosity of the anhydrous matrix chitosan gel is 5000 - 50000 mPa·s (millipascal·second). The anhydrous matrix chitosan gel has a function of exudate management, provides a moist healing environment, is beneficial to wound healing, and has hemostatic, antibacterial and analgesic effects, which is beneficial to relieve pain and accelerate wound healing. In addition, when the anhydrous matrix chitosan gel absorbs exudate, it expands rapidly, so as to be beneficial to the dressing to closely fit the postoperative wound and give full play to the efficacy of the product.

[0040] Hemostatic mechanism of the anhydrous matrix chitosan gel: Chitosan has active amino groups, which can aggregate red blood cells and concentrate platelets to achieve the hemostatic function, without relying on the conventional coagulation pathway.

[0041] Promoting healing mechanism of anhydrous matrix chitosan gel: (1) Effect on fibroblasts: Chitosan can promote the migration and proliferation of fibroblasts; (2) Influence on macrophages: Chitosan activates the activities of major histocompatibility complex, Fc receptor (receptor for the C-terminal of the Fc part of immunoglobulin) and mannitol receptor, thus promoting the release of macrophages; (3) Influence on epidermal cells: Chitosan can promote the synthesis of human epidermal cell DNA (deoxyribonucleic acid); (4) Influence on collagen synthesis: Chitosan can promote the activity of prolyl hydroxylase, thus accelerating the synthesis of collagen.

[0042] In an alternative embodiment of the present utility model, the weight of the chitosan gel 4 is 2 to 10 grams.

[0043] Specifically, according to the actual application scenario, the weight of the chitosan gel can be specifically set to improve applicability.

[0044] In an alternative embodiment of the present utility model, the materials of the outer cylinder 1 and the plunger 2 are both medical-grade polypropylene.

[0045] Specifically, medical polypropylene is a kind of plastic obtained by polymerizing propylene. Using the outer cylinder and plunger made of medical-grade polypropylene can withstand high-pressure steam sterilization, and has good mechanical properties, chemical stability and physiological degradability. It is beneficial to improve the safety and service life of the product.

[0046] In an alternative embodiment of the present utility model, the chitosan non-woven fabric 3 is made of water-soluble material.

[0047] Specifically, using the chitosan non-woven fabric made of water-soluble material, when the product is used, the chitosan non-woven fabric can quickly dissolve and release the chitosan gel, giving full play to the effectiveness of the chitosan gel and promoting wound healing. Here, the chitosan non-woven fabric made of water-soluble material completely dissolves in water within 0.5 to 5 minutes.

[0048] In an alternative embodiment of the present utility model, the material of the sealing gasket 21 is rubber.

[0049] Specifically, using the sealing gasket made of rubber is in close contact with the inner wall of the outer cylinder, improving the sealing performance inside the outer cylinder. Rubber has elasticity, which can improve the safety during use and reduce the damage to the outer cylinder.

[0050] A specific usage embodiment of the chitosan dressing proposed in the embodiment of the present utility model is as follows:

[0051] After cleaning the affected area and hands, open the package of the chitosan dressing, take out the chitosan dressing, avoid touching the chitosan gel with hands, remove the sealing cover 11, extend the outer cylinder 1 to the affected area, align the outlet with the affected area, and gently push the plunger 2 to gently apply the chitosan gel 4 to the affected area, as Figure 2As shown, when the anhydrous matrix chitosan gel 4 wrapped by the chitosan non-woven fabric 3 comes into contact with the wound exudate 5, the chitosan non-woven fabric 3 will quickly dissolve within 0.5 to 5 minutes, releasing the anhydrous matrix chitosan gel 4. When the anhydrous matrix chitosan gel 4 comes into contact with the exudate 5, it will absorb the exudate 5, causing its own volume to expand, which is conducive to closely fitting with the postoperative wound surface and fully exerting the hemostatic, analgesic, and wound-healing promotion effects of chitosan. Wrap the used outer cylinder 1 with a tissue paper and place it in the trash can.

[0052] Using the chitosan dressing of the embodiment of the present utility model can play a hemostatic role in the postoperative wound surface and can accelerate the healing of the wound surface after hemorrhoid surgery; in addition, the chitosan dressing of the embodiment of the present utility model has a simple structure and is convenient to use, without the need for other external fixing dressings to assist in use, which helps to reduce the workload of clinicians and improve the comfort of patients at the same time.

[0053] The chitosan dressing of the embodiment of the present utility model has a simple structure. On the one hand, the anhydrous matrix chitosan gel wrapped by the chitosan non-woven fabric can effectively solve the problem of easy residue during drug administration of traditional pushers; on the other hand, the chitosan non-woven fabric quickly dissolves and releases the anhydrous matrix chitosan gel when it comes into contact with the wound exudate, fully exerting the functions of the anhydrous matrix chitosan gel in exudate management, wound healing promotion, analgesia, and hemostasis, which is beneficial to the healing of the wound surface after hemorrhoid surgery. In addition, the anhydrous matrix chitosan gel quickly expands after absorbing the wound exudate, which is conducive to closely fitting with the wound surface after hemorrhoid surgery, thereby fully exerting the drug effect of the chitosan gel and accelerating the healing of the wound surface after hemorrhoid surgery.

[0054] The above is the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle described in the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A chitosan dressing, characterized in that, Comprising: An outer cylinder (1) and a plunger (2), the plunger (2) extends into the interior of the outer cylinder (1) and is slidable within the outer cylinder (1). One end of the outer cylinder (1) is provided with a sealing cover (11). Inside the outer cylinder (1), there is a chitosan non-woven fabric (3), and the chitosan non-woven fabric (3) is located between the plunger (2) and the sealing cover (11). Inside the chitosan non-woven fabric (3), there is a chitosan gel (4).

2. The chitosan dressing according to claim 1, wherein, At one end where the plunger (2) extends into the outer cylinder (1), a sealing gasket (21) is installed, and the chitosan non-woven fabric (3) is located between the sealing gasket (21) and the sealing cover (11).

3. The chitosan dressing according to claim 1, wherein The length of the outer cylinder (1) is 8 to 12 centimeters.

4. The chitosan dressing according to claim 1, wherein The diameter of the outer cylinder (1) is 0.2 to 1 centimeter.

5. The chitosan dressing according to claim 1, characterized in that, The basis weight of the chitosan non-woven fabric (3) is 50 to 200 g / m 2 .

6. The chitosan dressing according to claim 1, characterized in that, The chitosan gel (4) is cylindrical, with a length of 3 to 5 centimeters and a diameter of 0.2 to 1 centimeter.

7. The chitosan dressing according to claim 1, wherein The weight of the chitosan gel (4) is 2 to 10 grams.

8. The chitosan dressing according to claim 1, characterized in that, The materials of the outer cylinder (1) and the plunger (2) are both medical-grade polypropylene.

9. The chitosan dressing according to claim 1, wherein The chitosan non-woven fabric (3) is made of a water-soluble material.

10. The chitosan dressing according to claim 2, characterized in that, The material of the sealing gasket (21) is rubber.

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