Human collagen wound dressing easy to tear and unfold
By incorporating packaging film, isolation film, and retraction cord into the wound dressing, the problem of existing dressings being difficult to unfold quickly is solved, enabling easy-to-tear dressing unfolding and improving ease of use and practicality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG XINGZHICHENG BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-01-20
- Publication Date
- 2026-05-05
AI Technical Summary
Existing wound dressings have relatively thin release liner and dressing thickness, making them difficult to spread quickly, increasing the difficulty of use and reducing their practicality.
A human collagen wound dressing that is easy to tear and unfold has been designed. It adopts a combination structure of packaging film, isolation film, unfolding cord and indentation part. It can be quickly unfolded by folding and pulling the unfolding cord to avoid adhesion.
It enables rapid and convenient application of wound dressings, reduces secondary damage, and improves the patient experience and the practicality of the dressing.
Smart Images

Figure CN224193658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wound dressing technology, and in particular to a wound dressing made of human collagen that is easy to tear and unfold. Background Technology
[0002] Human collagen wound dressings are medical products with human collagen as the main ingredient. Using bioengineering technology, they mimic the structure and function of human collagen to create dressings for wound care. The core ingredient, human collagen, has a high similarity to human collagen, exhibiting good biocompatibility and low immunogenicity. It also contains auxiliary ingredients such as moisturizers. It promotes wound healing, accelerates cell adhesion, proliferation, and differentiation, and aids in tissue repair and regeneration; it activates the coagulation system, achieving hemostasis and creating conditions for healing; it acts as a physical barrier to block microorganisms and possesses antibacterial activity, preventing infection; it also regulates collagen metabolism, reducing scar formation. The easy-tear, unfolding design of human collagen wound dressings offers significant advantages. It is convenient for medical staff or patients to operate, allowing for quick and precise application even in emergencies or when space is limited. The tearing force is controllable, reducing secondary damage to the wound. The process is gentle, improving patient comfort and facilitating subsequent treatment.
[0003] In most cases, existing wound dressings are used by directly overlapping the wound dressing with release paper, folding the release paper twice, and then packing it into a bag to fill with medication. However, when unfolding the wound dressing after wrapping it with release paper, the thinness of both the release paper and the wound dressing makes it difficult to unfold quickly and they tend to stick together. This increases the difficulty of use for patients and reduces the practicality of the wound dressing. Therefore, a wound dressing made of easily tearable human collagen is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an easy-to-tear and unfold human collagen wound dressing, aiming to improve the problem that existing wound dressings and release paper are not easy to unfold quickly after being folded, which cannot meet the needs of patients and thus leads to a decrease in the practicality of wound dressings.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-tear and unfold human collagen wound dressing, comprising a packaging film and a dressing body, wherein the dressing body is disposed on the upper surface of the packaging film, and an isolation film is disposed on one side of the upper surface of the dressing body, the packaging film is folded by crease lines, multiple perforations are provided through the interior of the packaging film, a retractable cord is provided through the interior of the packaging film, indentation portions are provided on both sides of the packaging film, and a threading portion is provided on one side of the indentation portion.
[0006] Furthermore, the isolation membrane is arranged in a semi-circular shape and covers the upper surface of the adhesive body.
[0007] Furthermore, the crease lines are arranged in a cross shape inside the packaging film, and the crease lines are used to fold the packaging film.
[0008] Furthermore, the retractable cord is disposed inside the perforation and passes through the bottom of the packaging film in a crisscross arrangement.
[0009] Furthermore, the threading section has segmented and discontinuous indentation sections, and the threading section is used to pass through the take-up and extend rope.
[0010] Furthermore, the release film is an aluminum foil plastic film, which is used to prevent the patch body from sticking together when folded.
[0011] Furthermore, the packaging film is made of glassine paper or pearlescent film, and the packaging film is used to support the adhesive body.
[0012] Furthermore, the indentation portion is disposed on the upper and lower sides of the packaging film, and the indentation portion is used to seal and position the adhesive body.
[0013] This utility model has the following beneficial effects:
[0014] In this invention, the dressing body is placed on top of the packaging film, and then a release film is placed over one side of the dressing body. The dressing body is then folded twice along the crease line on one side of the release film. Heat pressing is then used to adhere the crease. When in use, the crease is torn open, and the packaging film is quickly pulled open by pulling the retractable cord. This allows the dressing body to be quickly unfolded for use. The release film is then removed to facilitate the handling of the dressing body, thus improving the practicality of the wound dressing. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of an easy-to-tear and unfold human collagen wound dressing proposed in this utility model;
[0016] Figure 2 This is a schematic diagram showing the unfolding of an easy-tear and unfoldable human collagen wound dressing proposed in this utility model.
[0017] Figure 3 This is a schematic diagram of the retractable cord portion of an easy-tear and unfoldable human collagen wound dressing proposed in this utility model.
[0018] Figure 4 This is a folding diagram of an easy-to-tear and unfold human collagen wound dressing proposed in this utility model.
[0019] Legend:
[0020] 1. Packaging film; 2. Perforation; 3. Retractable cord; 4. Crease line; 5. Adhesive body; 6. Indentation area; 7. Threading area; 8. Release film. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Reference Figure 1 - Figure 4 This utility model provides an embodiment of an easy-to-tear and unfold human collagen wound dressing, comprising a packaging film 1 and a dressing body 5. The dressing body 5 is disposed on the upper surface of the packaging film 1, and a release film 8 is disposed on one side of the upper surface of the dressing body 5. The packaging film 1 is folded by crease lines 4, and multiple perforations 2 are provided through the interior of the packaging film 1. A retractable rope 3 is provided through the interior of the packaging film 1. Indentation portions 6 are provided on both sides of the packaging film 1, and a threading portion 7 is provided on one side of the indentation portion 6. The release film 8 is semi-circular in shape and covers the upper surface of the dressing body 5. Crease lines The crease line 4 is arranged in a cross shape inside the packaging film 1, and is used to fold the packaging film 1; the retractable rope 3 is arranged through the perforation 2, and is arranged in a crisscross pattern through the bottom of the packaging film 1; the threading part 7 is used to pass through the retractable rope 3 in a segmented and discontinuous manner; the release film 8 is an aluminum foil plastic film, and is used to prevent the dressing body 5 from sticking together when folded; the packaging film 1 is made of glassine paper or pearl film, and is used to support the dressing body 5; the crease part 6 is arranged on the upper and lower sides of the packaging film 1, and is used to seal and position the dressing body 5.
[0023] Specifically, the packaging film 1 has an application body 5 on its upper surface. The packaging film 1 protects and supports the application body 5, preventing external environmental influences. A release film 8 is provided on one side of the upper surface of the application body 5 to prevent the application body 5 from sticking to the packaging film 1 and maintain the integrity of the application body 5. The packaging film 1 is folded by crease lines 4, making it easy to carry and store, and also convenient for users to open and use. Multiple perforations 2 are provided inside the packaging film 1 to provide a channel for the retractable cord 3 to pass through, facilitating the unfolding of the application body 5. A retractable cord 3 is threaded through the inside of the packaging film 1. The retractable cord 3 helps the user easily unfold the packaging film 1 by pulling it, thus facilitating the removal of the dressing body 5. Indentation sections 6 are provided on both sides of the packaging film 1, and a threading section 7 is provided on one side of each indentation section 6. The indentation sections 6 are used to seal and position the dressing body 5, ensuring its fixation during packaging and preventing loosening or deformation. The threading section 7 segments the indentation sections 6 into discontinuous sections, and the threading section 7 is used to pass through the retractable cord 3, making the pulling of the retractable cord 3 smoother and increasing ease of use. The release film 8 is semi-circular in shape and covers the dressing body. On the upper surface, the release film 8 protects the dressing body 5 from contact or contamination with other objects. Crease lines 4 are arranged in a cross shape inside the packaging film 1. These crease lines are used to fold the packaging film 1, making it easier to store and unfold. A retractable cord 3 is inserted through the perforation 2, passing through the bottom of the packaging film 1 in a crisscross pattern. This crisscross arrangement ensures that the packaging film 1 unfolds evenly when pulled, preventing damage caused by uneven force. The threaded section 7 segments the crease section 6 in a discontinuous manner. The threaded section 7 is used to pass through the retractable cord 3 to ensure proper unfolding when the packaging film 1 is folded. The rope 3 provides a limiting and fixing effect. The release film 8 is made of aluminum foil plastic film. The release film 8 is used to prevent the dressing body 5 from sticking together when folded, ensuring that the dressing body 5 remains clean and effective, and avoiding contamination during removal. The packaging film 1 is made of glassine paper or pearl film. The packaging film 1 is used to support the dressing body 5, providing the necessary support force and maintaining the shape and structure of the dressing body 5. The indentation part 6 is set on the upper and lower sides of the packaging film 1. The indentation part 6 is used to seal and position the dressing body 5, ensuring that the dressing body 5 does not move within the packaging film 1, thereby improving the convenience and safety of product use.
[0024] Working principle: When making this wound dressing, the dressing body 5 is first placed on top of the packaging film 1 and half of it is covered by the isolation film 8. Then, the packaging film 1 is folded in half so that the dressing body 5 is quickly folded along the crease line 4. Then, the medicine is poured into the dressing body 5 and mixed evenly. Then, the packaging film 1 is sealed by heat pressing along the indentation 6, avoiding the threaded part 7, so as to prevent the dressing body 5 from shifting. Then, the whole thing is placed in the packaging bag and medicine is poured into the packaging bag for use. When the wound dressing is needed, the seal of the indentation 6 is torn open. Then, the pull rope 3 is pulled by both hands. The pull rope 3 slides inside the perforation 2, thereby quickly unfolding the packaging film 1 and opening the dressing body 5 for use. The cross arrangement of the pull rope 3 prevents the packaging film 1 from not being able to be laid flat and unfolded.
[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A tear-and-unfold human collagen wound dressing, comprising a packaging film (1) and a dressing body (5), characterized in that: The packaging film (1) has an adhesive body (5) on its upper surface. An isolation film (8) is provided on one side of the upper surface of the adhesive body (5). The packaging film (1) is folded by crease lines (4). Multiple perforations (2) are provided through the inside of the packaging film (1). A retractable rope (3) is provided through the inside of the packaging film (1). Indentation portions (6) are provided on both sides of the packaging film (1). A threading portion (7) is provided on one side of the indentation portion (6).
2. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The isolation membrane (8) is semi-circular in shape and covers the upper surface of the adhesive body (5).
3. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The crease line (4) is set in a cross shape inside the packaging film (1), and the crease line (4) is used to fold the packaging film (1).
4. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The pull cord (3) is installed inside the perforation (2) and passes through the bottom of the packaging film (1) in a crisscross pattern.
5. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The threading part (7) provides the indentation part (6) in segments and is not continuous. The threading part (7) is used to pass through the take-up rope (3).
6. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The isolation film (8) is an aluminum foil plastic film, and the isolation film (8) is used to prevent the patch body (5) from sticking together when folded.
7. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The packaging film (1) is made of glassine paper or pearl film and is used to support the dressing body (5).
8. The easily tearable and unfoldable human collagen wound dressing according to claim 1, characterized in that: The indentation portion (6) is provided on the upper and lower sides of the packaging film (1), and the indentation portion (6) is used to seal and position the adhesive body (5).