Medical dressing for large-area wounds
By introducing a closure mechanism into medical dressings, mechanical closure of wounds is achieved using fixation tape and tension sutures, solving the problems of easy tearing of traditional dressings and long suture healing time, thus achieving rapid healing and reduced scarring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ROYALIFE BIOLOGICAL TECH CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional medical dressings tend to adhere to the wound site during the treatment of large-area wounds, and are prone to tearing up the already healed granulation tissue when removed. In addition, suture healing methods take a long time and result in more scarring.
The medical dressing uses a protective layer and a closure mechanism. The closure mechanism consists of a fixation patch and a tensioning line that are symmetrically adhered to both sides of the wound. The wound is closed by pulling the fixation patch with the tensioning line. Combined with the reinforcement patch and the closure assembly, the wound is mechanically closed and heals quickly.
It reduces scar formation during wound healing, shortens healing time, facilitates dressing changes, and promotes rapid wound healing.
Smart Images
Figure CN224320729U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of medical devices, and in particular to a medical dressing for large-area wounds. Background Technology
[0002] Medical dressings are biomedical materials used to treat sores, wounds, and other skin lesions. They are widely used in daily life. During the reconstruction or recovery period of skin trauma, medical dressings can temporarily function as part of the skin barrier, providing a favorable microenvironment for wound healing. Medical dressings play important roles such as providing a physical barrier, controlling wound secretions and odor, controlling wound infection, stopping bleeding, reducing or eliminating scar formation, and accelerating wound healing.
[0003] Traditional medical dressings are typically made of hydrophilic materials such as gauze, bandages, and cotton. They are often used to aid wound healing after a skin injury. The use of medical dressings should help protect tissues from external physical damage, prevent secondary contamination of the wound by bacteria, and promote normal wound repair. Therefore, excellent medical dressings must possess the following characteristics: ensuring the wound is protected from secondary damage caused by external microorganisms or other substances; having good mechanical properties to ensure user comfort; and being non-toxic and non-irritating to ensure user safety.
[0004] For large open wounds or surgical incisions, the wound is usually sutured and then covered directly with medical gauze or other dressings. During the wound healing process, the dressing can easily stick to the wound, and when the dressing is removed, it can easily tear the already healed granulation tissue. Utility Model Content
[0005] In order to improve the therapeutic effect of medical dressings on open wounds, this application provides a medical dressing for large-area wounds.
[0006] This application provides a medical dressing for large-area wounds, employing the following technical solution:
[0007] A medical dressing for large-area wounds includes a protective layer adhered to and covering the wound, and a closure mechanism disposed inside the protective layer to close the wound. The closure mechanism includes a pair of fixing patches symmetrically adhered to both sides of the wound. The length direction of the fixing patches is arranged along the length direction of the wound. Multiple closing blocks are uniformly fixed on the fixing patches along their length direction. Each of the two closing blocks on the two fixing patches and arranged opposite each other is connected to a tensioning line for tightening and closing the skin on both sides of the wound.
[0008] By adopting the above technical solution, when treating and repairing open wounds or surgical wounds, the corresponding closure block can be tightened by tightening the sutures, and then the fixation tape attached to the skin can be pulled by multiple tightening sutures, so that the fixation tapes on both sides of the wound can be brought closer together, so that the opening at the wound can be closed and the wound can be prevented from being exposed. At the same time, compared with sutures, wound healing can be accelerated and existing dressings can be prevented from adhering to the wound.
[0009] Optionally, the fixing sticker is covered with a reinforcing sticker to strengthen the closure block.
[0010] By adopting the above technical solution, the reinforcement patch can be adhered to the fixation patch, which not only increases the adhesion strength between the fixation patch and the skin, but also makes the connection between each closure block and the fixation patch more secure, preventing the closure block and the fixation patch from tearing when the two closure blocks are tightened by the tension line. In addition, when the tension line tightens the closure block, it can move more skin around the wound, so that the skin on both sides of the wound can be adhered together as much as possible.
[0011] Optionally, the closure mechanism further includes a closure assembly disposed on the two fixing patches. The closure assembly includes a closure strip installed on each fixing patch and a tensioning member disposed between the two closure strips. The length direction of the closure strip is the same as the length direction of the fixing patch. The closure strip is disposed on the side of the plurality of closure blocks away from the wound and abuts against the plurality of closure blocks. The tensioning member tightens and fixes the two closure strips.
[0012] By adopting the above technical solution, when the skin at the wound site is tightened and closed, the closing strip set on the fixing patch can be connected to multiple closing blocks at the same time. When the tightening component pulls the closing strip, the closing strip passes through the closing blocks to allow the fixing patch and the reinforcing patch to pull the skin on one side of the wound, so that the skin on the wound side can be pulled at the same time, thereby allowing the skin on both sides of the wound to close accurately.
[0013] Optionally, the closure block is U-shaped, with one side fixed to the fixing sticker, and the U-shaped opening of the closure block faces away from the wound. The closure strip can be installed on the closure block.
[0014] By adopting the above technical solution, the U-shaped closure block can prevent the tension line from detaching from the closure block. In addition, when controlling the movement of the skin on one side of the wound, the closure strip can be simultaneously attached to multiple closure blocks, so that the skin bonded to the fixation tape and reinforcement tape can be pulled, allowing the wound to heal piece by piece.
[0015] Optionally, the tensioning member includes a tensioning bar connected to the end of each closing bar, with the ends of the two tensioning bars away from the closing bars extending in opposite directions, and a locking block provided between the two tensioning bars, with the two tensioning bars passing through the locking block and being able to be fixed on the locking block.
[0016] By adopting the above technical solution, when tightening the skin on both sides of the wound, the two tensioning strips are tightened, allowing the two closing strips to move relative to each other, and the pulled tensioning strips are fixed on the locking block, so that the skin on both sides of the wound can close. During the tightening process, the two tensioning strips can be tightened simultaneously, allowing the tensioning strips to gradually tighten on the locking block, avoiding the influence of skin elasticity and allowing the two tensioning strips to loosen from the locking block.
[0017] Optionally, the tensioning strip is provided with fixing teeth along its length, the locking block is provided with two locking holes for the tensioning strip to pass through, the locking block is provided with mounting holes at positions corresponding to the locking holes, and an elastic snap-fit block is fixed in the mounting holes, the snap-fit block being snapped into the fixing teeth.
[0018] By adopting the above technical solution, the cooperation between the plug-in block and the fixing teeth allows the tensioning strip to be pulled unidirectionally on the locking block, thereby fixing the tensioning strip on the locking block. When the tensioning strip is inserted into the locking hole on the locking block and pulled, the fixing teeth on the tensioning strip can lift the snap-fit block. When the tensioning strip is stopped being pulled, the snap-fit block can snap into the corresponding fixing teeth to achieve fixation.
[0019] Optionally, an adjusting component is provided on the locking block and at each locking hole position. The adjusting component includes an adjusting block that is slidably inserted into the locking hole and a driving block that is fixed on the adjusting block. The adjusting block is disposed between the tensioning bar and the snap-fit block, and one end of the adjusting block slides into contact with the snap-fit block. The driving block is slidably fitted in the mounting hole.
[0020] By employing the above technical solution, during the process of tightening and closing the wound and allowing it to heal, the patient's movement can cause the two tension strips and locking blocks to become loose, making the initially healed wound prone to tearing. Therefore, throughout the entire wound healing process, to ensure rapid healing, the wound area can be disinfected periodically, and then medication to promote skin growth can be reapplied. During this process, the two tension strips should be tightened again to prevent the skin from being in a taut state and to promote wound healing.
[0021] Optionally, a connecting block is fixed to the end where the tensioning strip connects to the closing strip, and a connecting groove is provided on the closing strip, with the connecting block inserted into the connecting groove.
[0022] By adopting the above technical solution, the connecting block can be inserted into the connecting groove, allowing the tension strip and the closing strip to be detached and fixedly connected. During use, they can be assembled and installed together, which not only allows the tension strip and tensioning parts to be reused after disinfection, but also allows them to be assembled and installed to meet wounds of different degrees, making them adaptable to a variety of wound conditions.
[0023] Optionally, multiple sets of tensioning members are provided between the two closing strips, and the multiple sets of tensioning members are symmetrically arranged near the two ends of the closing strips.
[0024] By adopting the above technical solution, multiple sets of tensioning components are provided between the two closing strips, and these multiple sets of tensioning components are located near the two ends of the two closing strips, so as to avoid the multiple sets of tensioning components covering the wound and facilitate dressing changes at the wound site.
[0025] Optionally, the protective layer is provided with a waterproof layer near its edge, and a repair layer is provided on the protective layer to cover the wound.
[0026] By adopting the above technical solutions, the waterproof layer can play a role in waterproofing, preventing water from getting into the patient's wound and avoiding infection and suppuration; the repair layer applied to the wound can promote the healing of the skin at the wound site.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. The closure mechanism installed at the wound site can mechanically tighten and close the wound before applying the protective and repair layers, preventing the skin tissue at the wound site from everting and allowing the skin on both sides of the wound to contact each other, thereby enabling the wound to heal quickly. Compared with existing suture healing methods, it shortens the operation time and avoids leaving more scars on the skin surface after the wound heals.
[0029] 2. The tensioning devices installed on the wound should be located at both ends of the wound, avoiding the tensioning devices being placed across the wound, which would make it difficult to apply medicine or perform other operations on the wound later.
[0030] 3. During the wound healing process, due to the skin's own elasticity, if the two tension strips loosen, they will tear the newly healed skin. Therefore, during the wound healing process, the wound can be disinfected again and a new repair layer can be replaced so that the medication on the repair layer can directly act on the wound. By changing the medication, the healing of the skin at the wound site can be accelerated. Attached Figure Description
[0031] Figure 1 This is a schematic diagram illustrating the overall structure of the medical dressing in the embodiments of this application.
[0032] Figure 2 This is a schematic diagram illustrating the structure of the closing mechanism in an embodiment of this application.
[0033] Figure 3 This is a partially enlarged schematic diagram illustrating the closing mechanism in an embodiment of this application.
[0034] Figure 4 This is a schematic diagram illustrating the closing component and the adjusting component in an embodiment of this application.
[0035] Explanation of reference numerals in the attached drawings: 1. Protective layer; 11. Waterproof layer; 12. Repair layer; 2. Closure mechanism; 21. Fixing sticker; 211. Closure block; 22. Tensioning line; 23. Reinforcing sticker; 24. Closure assembly; 241. Closure strip; 242. Tensioning strip; 243. Locking block; 244. Fixing tooth; 245. Locking hole; 246. Mounting hole; 247. Snap-fit block; 25. Adjusting component; 251. Adjusting block; 252. Drive block; 26. Connecting block; 27. Connecting groove; 28. Locking rope. Detailed Implementation
[0036] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0037] This application discloses a medical dressing for large-area wounds.
[0038] Reference Figure 1 A medical dressing for large-area wounds includes a protective layer 1 bonded to and covering the wound, and a closure mechanism 2 inside the protective layer 1 for mechanically closing the wound. In use, the closure mechanism 2 first compresses the wound to close it, promoting rapid wound healing, and then the protective layer 1 forms a protective layer outside the closure mechanism 2 to prevent infection at the wound site.
[0039] Reference Figure 1 and Figure 2The closure mechanism 2 includes a pair of elongated fixing patches 21, which are adhered to both sides of the wound and are arranged along the length of the wound. Multiple closure blocks 211 are fixed to the fixing patches 21, evenly arranged along the length of the fixing patches 21, and the closure blocks 211 on the two fixing patches 21 are positioned opposite each other. Each closure block 211 is U-shaped, with its opening facing away from the wound. One side of each closure block 211 is fixed to the fixing patch 21. Two corresponding closure blocks 21 are located on the two fixing patches 21. A tension line 22 is provided on the 1, which is connected to two closing blocks 211. The U-shaped closing blocks 211 can prevent the tension line 22 from detaching from the closing blocks 211. The tension line 22 provided in this application can be a surgical suture or a tension line 22 made of elastic material. It is not limited to the above two types. As long as it can be used for surgery and can tighten the two closing blocks 211, when repairing the wound, the multiple tension lines 22 can tighten the larger wound first to reduce the opening area of the wound and thus accelerate the wound healing.
[0040] A reinforcing patch 23 is applied over the fixing patch 21. The reinforcing patch 23 can be adhered to the fixing patch 21, which not only increases the adhesion strength between the fixing patch 21 and the skin, but also makes the connection between each closure block 211 and the fixing patch 21 more secure. This prevents the closure block 211 from tearing when the two closure blocks 211 are tightened by the tension line 22. In addition, when the tension line 22 tightens the closure block 211, it can move more skin around the wound, so that the skin on both sides of the wound can be adhered together as much as possible.
[0041] Reference Figure 2 and Figure 3The closure mechanism 2 also includes a closure component 24 disposed on the two fixing patches 21. The closure component 24 includes a pair of closure strips 241 mounted on the fixing patches 21. The length direction of the closure strips 241 is the same as the length direction of the fixing patches 21. The closure strips 241 are pressed against the fixing patches 21 and the reinforcing patches 23, and one side of the closure strips 241 can be snapped onto multiple closure blocks 211. A tensioning member is disposed between the two closure strips 241 to tighten and fix them. Multiple sets of tensioning members are disposed between the two closure strips 241, and the multiple sets of tensioning members are disposed near the two ends of the two closure strips 241 to avoid the multiple sets of tensioning members covering the wound, which facilitates dressing changes. The tensioning member includes a pair of tensioning strips 242 connected to the two closure strips 241. 242 is horizontally offset between the two closing strips 241, and the ends of the two tensioning strips 242 away from the closing strips 241 extend in opposite directions. A locking block 243 is provided on the two tensioning strips 242 and near the middle of them. The tensioning strips 242 pass through the locking block 243 and are fixed by the locking block 243. When mechanically closing the wound, the tensioning strips 242 are passed through the locking block 243 and fixed, so that the skin on both sides of the wound can be closed. During the tightening process, the tensioning strips 242 can be tightened gradually on the locking block 243 by simultaneously tightening the two tensioning strips 242, so as to avoid the influence of skin elasticity and allow the two tensioning strips 242 to loosen from the locking block 243.
[0042] Reference Figure 2 , Figure 3 and Figure 4 The tensioning strip 242 has evenly distributed fixing teeth 244 along its length. The locking block 243 has symmetrically arranged locking holes 245 along the length of the tensioning strip 242. The two tensioning strips 242 pass through the corresponding locking holes 245. The locking block 243 has mounting holes 246 at positions corresponding to each locking hole 245. The mounting holes 246 are located on the upper surface of the locking block 243, and their length direction is the same as that of the locking holes 245. A snap-fit block 247 is fixed in each mounting hole 246 on the locking block 243. One end of the snap-fit block 247 is fixed to the locking block 243. 247 is elastic. When the tensioning bar 242 is inserted into the locking block 243, the snap-fit block 247 can be inserted into the fixing tooth 244. The mutual cooperation between the snap-fit block and the fixing tooth 244 allows the tensioning bar 242 to be pulled unidirectionally on the locking block 243, thereby fixing the tensioning bar 242 to the locking block 243. When the tensioning bar 242 is inserted into the locking hole 245 on the locking block 243 and the tensioning bar 242 is pulled, the fixing tooth 244 on the tensioning bar 242 can push up the snap-fit block 247. When the tensioning bar 242 is stopped being pulled, the snap-fit block 247 can be snapped into the corresponding fixing tooth 244 to achieve fixation.
[0043] An adjusting member 25 is provided on the locking block 243 at a position corresponding to each locking hole 245 to adjust the tension of the tensioning bar 242 on the locking block 243. The adjusting member 25 includes an adjusting block 251 slidably disposed in the locking hole 245. One end of the adjusting block 251 extends into the locking hole 245 and is located between the tensioning bar 242 and the locking block 247. The end of the adjusting block 251 inside the locking hole 245 can slide to contact the locking block 247, allowing the sliding adjusting block 251 to push the locking block 247 off the fixing tooth 244. A driving block 252 is fixed on the end of the adjusting block 251 outside the locking block 243 to control the movement of the adjusting block 251. The locking block 243 is set on the upper surface of the locking block 243, and the end of the driving block 252 away from the adjusting block 251 slides in the mounting hole 246 to prevent the adjusting block 251 from falling off the locking block 243. During the process of tightening and closing the wound and allowing it to heal, the movement of the patient may cause the two tensioning strips 242 and the locking block 243 to be in a loose state, making the initially healed wound prone to tearing. Therefore, during the entire wound healing process, in order to ensure that the wound can heal quickly, the wound can be disinfected every once in a while, and then an agent that promotes skin growth can be applied. During this process, the two tensioning strips 242 are tightened to prevent the skin at the wound from being in a tight state.
[0044] Reference Figure 2 , Figure 3 and Figure 4 A T-shaped connecting block 26 is fixed at the end where the tensioning strip 242 connects to the closing strip 241, and a T-shaped connecting groove 27 is provided on the closing strip 241. The connecting block 26 can be inserted into the connecting groove 27, allowing the tensioning strip 242 and the closing strip 241 to be detachably and fixedly connected. During use, they can be assembled together, which not only allows the tensioning strip 242 and the tensioning component to be reused after disinfection, but also allows for assembly and assembly for wounds of different degrees, making it adaptable to a variety of wound conditions. The closing strip 241 is a telescopic structure, which includes a fixed part and a pair of movable parts. The two movable parts are symmetrically arranged at both ends of the fixed part, and the movable parts are slidably mounted on the fixed part. During use, the length of the closing strip 241 can be adjusted according to the length of the wound, and the telescopic closing strip 241 can align and connect the tensioning strip 242 and the closing strip 241, thereby fixing the tensioning component between the two closing strips 241. A locking rope 28 is fitted onto the two closing strips 241. The locking rope 28 is fitted onto the outer edge of the two closing strips 241. After the skin at the wound site is tightened and closed, the locking rope 28 can be used to reinforce and fix the two closing strips 241.
[0045] Reference Figure 1and Figure 2 A waterproof layer 11 is fixed to the inner surface of the protective layer 1 facing the skin, near the edge. The waterproof layer 11 adheres to the skin, preventing water from wetting the patient's wound. Inside the protective layer 1, a separate repair layer 12 is also provided. The repair layer 12 contains a liquid that promotes wound healing, which may be one or more of the following: exosomes, vascular endothelial growth factor, epidermal growth factor, transforming growth factor-β, liver growth factor, superoxide dismutase, interleukin-6, collagen, fibronectin, and platelet-derived factor. All materials used in this application are medical-grade and can be directly applied to the human body. Materials that can be reused can be used again after sterilization.
[0046] The implementation principle of a medical dressing for large-area wounds in this application embodiment is as follows: when repairing the skin at the wound site, the skin on both sides of the wound is tightened by tensioning wire 22 and tensioning member, so that the wound can be tightened and closed. After the wound is closed, a repair layer 12 that promotes wound healing can be covered, and then a protective layer 1 is covered outside the closing mechanism 2, so that the wound can heal quickly.
[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A medical dressing for large-area wounds, characterized in that: The device includes a protective layer (1) that is bonded to and covers the wound, and a closure mechanism (2) that is disposed inside the protective layer (1) and closes the wound. The closure mechanism (2) includes a pair of fixing patches (21) that are symmetrically bonded to both sides of the wound. The length direction of the fixing patches (21) is arranged along the length direction of the wound. Multiple closing blocks (211) are uniformly fixed on the fixing patches (21) along their length direction. Each of the two closing blocks (211) arranged opposite to each other on the two fixing patches (21) is connected to a tensioning line (22) for tightening and closing the skin on both sides of the wound.
2. The medical dressing for large-area wounds according to claim 1, characterized in that: The fixing patch (21) is covered with a reinforcing patch (23) to reinforce the closing block (211).
3. A medical dressing for large-area wounds according to claim 1, characterized in that: The closing mechanism (2) further includes a closing component (24) disposed on the two fixing patches (21). The closing component (24) includes a closing strip (241) installed on each fixing patch (21) and a tensioning member disposed between the two closing strips (241). The length direction of the closing strip (241) is the same as the length direction of the fixing patch (21). The closing strip (241) is disposed on the side of the plurality of closing blocks (211) away from the wound, and the closing strip (241) abuts against the plurality of closing blocks (211). The tensioning member tightens and fixes the two closing strips (241).
4. A medical dressing for large-area wounds according to claim 3, characterized in that: The closure block (211) is U-shaped, with one side fixed to the fixing sticker (21), and the U-shaped opening of the closure block (211) faces away from the wound. The closure strip (241) can be installed on the closure block (211).
5. A medical dressing for large-area wounds according to claim 3, characterized in that: The tensioning element includes tensioning bars (242) connected to the end of each closing bar (241), with the ends of the two tensioning bars (242) away from the closing bar (241) extending in opposite directions. A locking block (243) is provided between the two tensioning bars (242), and the two tensioning bars (242) pass through the locking block (243) and can be fixed on the locking block (243).
6. A medical dressing for large-area wounds according to claim 5, characterized in that: The tensioning bar (242) has a fixing tooth (244) along its length. The locking block (243) has two locking holes (245) for the tensioning bar (242) to pass through. The locking block (243) has a mounting hole (246) at the position corresponding to the locking hole (245). An elastic snap-fit block (247) is fixed in the mounting hole (246). The snap-fit block (247) is snapped into the fixing tooth (244).
7. A medical dressing for large-area wounds according to claim 5, characterized in that: An adjusting element (25) is provided on the locking block (243) and at each corresponding locking hole (245). The adjusting element (25) includes an adjusting block (251) that is slidably inserted into the locking hole (245) and a driving block (252) fixed on the adjusting block (251). The adjusting block (251) is disposed between the tensioning bar (242) and the snap-fit block (247), and one end of the adjusting block (251) slides into contact with the snap-fit block (247). The driving block (252) is slidably fitted in the mounting hole (246).
8. A medical dressing for large-area wounds according to claim 5, characterized in that: A connecting block (26) is fixed at the end where the tensioning strip (242) connects to the closing strip (241). A connecting groove (27) is provided on the closing strip (241), and the connecting block (26) is inserted into the connecting groove (27).
9. A medical dressing for large-area wounds according to claim 3, characterized in that: The tensioning members are provided in multiple sets between the two closing strips (241), and the multiple sets of tensioning members are symmetrically arranged near the two ends of the closing strips (241).
10. A medical dressing for large-area wounds according to claim 1, characterized in that: The protective layer (1) has a waterproof layer (11) near its edge, and a repair layer (12) covering the wound is provided on the protective layer (1).