Postoperative dressing change device for trauma
The rollers and flexible sponge structure of the post-traumatic wound dressing changer solve the problem of dressing adhesion during dressing changes, reduce patient discomfort, protect newly formed tissue, and promote wound healing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THE THIRD XIANGYA HOSPITAL OF CENT SOUTH UNIV
- Filing Date
- 2025-12-29
- Publication Date
- 2026-04-17
AI Technical Summary
Existing dressings are prone to sticking to the wound during dressing changes, causing pain and discomfort to the patient and potentially damaging newly formed tissue, thus affecting wound healing.
Design a wound dressing changer that uses a roller and a flexible sponge structure. The roller has an adhesive layer, and the inclined end of the flexible sponge is coated with liquid to lubricate the wound and prevent the dressing from sticking to the skin. The dressing is gradually adhered to the roller by rolling.
It reduces patient discomfort during dressing changes, prevents excessive adhesion between the dressing and skin, protects newly formed tissue, and promotes wound healing.
Smart Images

Figure CN121868045A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of postoperative dressing technology, and more specifically, to a postoperative dressing changer for trauma. Background Technology
[0002] Dressing change, also known as dressing replacement, is a basic surgical procedure for wound management. It involves removing contaminated dressings, cleaning the wound, and covering it with sterile materials to prevent infection and promote tissue healing. It is applicable to various clinical scenarios such as postoperative wound suturing and suppurating wounds. Medical dressings are supplies used to cover sores, wounds, or other damage. They are usually made of materials such as gauze, hydrocolloids, or polymer foam.
[0003] During dressing changes, the dressing may adhere to the wound area after drying due to prolonged contact with the wound surface. When doctors manually remove the old dressing, it is difficult to control the direction and force of the tearing evenly. Excessive tearing can cause pain, bleeding, and even damage to newly formed epithelial tissue, leading to increased patient discomfort and hindering the subsequent wound healing process. Summary of the Invention
[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a post-traumatic dressing changer. This device comprises rollers, a flexible sponge, and a support frame. The operator controls and pushes the rollers, causing them to roll over the dressing. The adhesive layer on the rollers lifts the dressing and gradually adheres it to the rollers. Simultaneously, the inclined end of the flexible sponge continuously applies its internally soaked liquid to the contact surface between the dressing and the skin, thus moistening the contact surface and preventing excessive adhesion between the dressing and the wound. This reduces patient discomfort during dressing changes, thereby addressing the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a post-traumatic dressing changer, comprising a support frame, a handle provided on one side of the support frame, a roller mounted on the other side of the support frame via a rotating shaft, and a flexible sponge fixedly attached to the bottom end of the support frame, the flexible sponge being inclined towards the side of the roller. The flexible sponge includes a fixing base, one side of which is integrally formed with an inclined end. An arc-shaped groove is provided at the top of one side of the fixing base. One side of the arc-shaped groove is seamlessly connected to the surface of the inclined end. A deformation groove is provided at the connection between the arc-shaped groove and the inclined end. A clearance space is provided on the side of the support frame near the roller. The overall volume of the fixing base gradually decreases towards the inclined end. The end of the inclined end is set as a semi-circular arc. The concave direction of the arc-shaped groove points to one side of the support frame. The horizontal height of the inclined end is lower than the horizontal height of the roller.
[0006] In a preferred embodiment, the support frame, grip, and wheels are all made of lightweight plastic material.
[0007] In a preferred embodiment, the interior of the flexible sponge is impregnated with any one of medical gel, saline solution, or iodine solution.
[0008] In a preferred embodiment, the surface of the grip is uniformly provided with anti-slip texture, and the end of the grip is provided with a limiting ball.
[0009] In a preferred embodiment, the surface of the roller is adhered with an adhesive layer, and the surface of the adhesive layer may be covered with a protective film.
[0010] In a preferred embodiment, the flexible sponge and the roller are spaced apart, and the inclined end as a whole can be twisted and deformed obliquely upward through the deformation groove.
[0011] The technical effects and advantages of this invention are as follows: This invention utilizes a roller, a flexible sponge, and a support frame. First, the roller is positioned above one side of the dressing, with the flexible sponge precisely against the contact surface between the skin and the edge of the dressing. The operator then grips the handle and pushes the roller forward, causing it to roll along the top of the dressing. The adhesive layer on the roller lifts the dressing, gradually adhering it to the roller. Simultaneously, the inclined tip of the flexible sponge continuously applies its internally soaked liquid to the contact surface between the dressing and the skin, thus moistening the area. When the dressing adheres to the skin wound, the liquid fully penetrates the adhesion point, preventing excessive adhesion and reducing patient discomfort during dressing changes. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the present invention; Figure 3 This is a schematic diagram of the overall side structure of the present invention; Figure 4 This is a partial structural diagram of the flexible sponge of the present invention; Figure 5 This is a schematic diagram showing the rolling direction of the roller and the deformation direction of the flexible sponge according to the present invention.
[0013] The attached figures are labeled as follows: 1. Support frame; 2. Handle; 3. Roller; 4. Flexible sponge; 41. Fixing base; 42. Inclined end; 43. Arc-shaped groove; 44. Deformation groove. Detailed Implementation
[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0015] As attached Figure 1 To be continued Figure 5 The present invention relates to a wound dressing device, comprising a support frame 1, a handle 2 provided on one side of the support frame 1, and a roller 3 rolled on the other side of the support frame 1 via a rotating shaft. A flexible sponge 4 is fixedly attached to the bottom end of the support frame 1, and the flexible sponge 4 is inclined towards the side of the roller 3. The flexible sponge 4 includes a fixing base 41, one side of which is integrally formed with an inclined end 42. An arc-shaped groove 43 is provided at the top of one side of the fixing base 41. One side of the arc-shaped groove 43 is seamlessly connected to the surface of the inclined end 42. A deformation groove 44 is provided at the connection between the arc-shaped groove 43 and the inclined end 42. A clearance space is provided on the side of the support frame 1 near the roller 3. The overall volume of the fixing base 41 gradually decreases towards the inclined end 42. The end of the inclined end 42 is semi-circular. The concave direction of the arc-shaped groove 43 points towards the support. On one side of the frame 1, the horizontal height of the inclined end 42 is lower than the horizontal height of the roller 3. With the above setting, it can be ensured that when the roller 3 contacts the top of the dressing, the flexible sponge 4 also simultaneously adheres to the contact surface between the dressing and the skin and bends inward. This allows the flexible sponge 4 to provide downward pre-tightening force by utilizing its own deformation elasticity during use, thereby gradually applying the internal lubricating material (medical gel, saline or iodine) to the position where the dressing contacts the skin and moisturizes the inside of the dressing, preventing adhesion between the dressing and the wound, and thus reducing the patient's discomfort when changing the dressing.
[0016] The support frame 1, handle 2, and roller 3 are all made of lightweight plastic material. The flexible sponge 4 is impregnated with any one of the following materials: medical gel, saline, or iodine. The surface of the handle 2 is uniformly textured with anti-slip patterns, and the end of the handle 2 is equipped with a limiting ball. With the above settings, the operator can pre-impregnate the flexible sponge 4 with any one of the following materials: medical gel, saline, or iodine, according to actual needs, which facilitates the subsequent operation of dressing replacement.
[0017] Please refer to the attached instruction manual for details. Figure 3 The surface of the roller 3 is covered with an adhesive layer, and the surface of the adhesive layer can be covered with a protective film.
[0018] The specific implementation method is as follows: Through the above settings, the adhesive layer on the roller 3 can be protected, and it can be easily peeled off for use at any time.
[0019] Please refer to the attached instruction manual for details. Figure 4 The flexible sponge 4 and the roller 3 are spaced apart, and the inclined end 42 can be twisted and deformed obliquely upward through the deformation groove 44.
[0020] The specific implementation method is as follows: using the above-mentioned setting, the elasticity of the flexible sponge 4 during use can always provide a downward pre-tightening force, thereby gradually applying the internal lubricating material medical gel, physiological saline or iodine to the position where the dressing contacts the skin, so that after the roller adheres to the dressing, the dressing can be easily peeled off for replacement.
[0021] Working principle of the invention: Step 1: First, the doctor can soak the flexible sponge 4 in medical gel, saline or iodine solution. Then, remove the protective film on the adhesive layer of the roller 3 and attach the roller 3 to the upper part of one side of the dressing. At this time, the flexible sponge 4 is exactly attached to the contact surface between the skin and the edge of the dressing.
[0022] Step 2: Next, the physician grips handle 2 and pushes roller 3 forward, allowing it to roll along the dressing. The adhesive layer on roller 3 lifts the dressing, gradually adhering it to the roller. Simultaneously, the inclined end 42 of the flexible sponge 4 continuously applies its internally soaked liquid to the contact surface between the dressing and the skin, moistening the area. When the dressing adheres to the wound, the liquid fully penetrates the adhesion point, preventing excessive adhesion and ensuring the old dressing is easily lifted. Then, routine medical care can be performed, and a new dressing is applied, completing the dressing change process. During this process, the adhesive effect of roller 3 evenly transmits the pulling force to the dressing surface on the wound, while maintaining a consistent tearing direction. This effectively reduces patient discomfort, minimizes damage to newly formed tissue, and promotes full wound healing.
[0023] Step 3: Next, the physician can dispose of the old dressings according to medical waste disposal regulations and store and transport them centrally.
[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, 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 within the protection scope of the present invention.
Claims
1. A post-traumatic wound dressing changer, comprising a support frame, characterized in that: A handle is provided on one side of the support frame, and a roller is rolled on the other side of the support frame via a rotating shaft. A flexible sponge is fixedly attached to the bottom of the support frame, and the flexible sponge is distributed at an angle towards the side of the roller. The flexible sponge includes a fixing base, one side of which is integrally formed with an inclined end. An arc-shaped groove is provided at the top of one side of the fixing base. One side of the arc-shaped groove is seamlessly connected to the surface of the inclined end. A deformation groove is provided at the connection between the arc-shaped groove and the inclined end. A clearance space is provided on the side of the support frame near the roller. The overall volume of the fixing base gradually decreases towards the inclined end. The end of the inclined end is set as a semi-circular arc. The concave direction of the arc-shaped groove points to one side of the support frame. The horizontal height of the inclined end is lower than the horizontal height of the roller.
2. The post-traumatic wound dressing device according to claim 1, characterized in that: The support frame, grip, and wheels are all made of lightweight plastic material.
3. The post-traumatic wound dressing device according to claim 1, characterized in that: The interior of the flexible sponge is impregnated with any one of the following materials: medical gel, physiological saline, or iodine tincture.
4. The post-traumatic wound dressing device according to claim 1, characterized in that: The surface of the grip is uniformly textured with anti-slip patterns, and the end of the grip is provided with a limit ball.
5. A post-traumatic wound dressing device according to claim 1, characterized in that: The surface of the roller is covered with an adhesive layer, and the surface of the adhesive layer can be covered with a protective film.
6. A post-traumatic wound dressing device according to claim 1, characterized in that: The flexible sponge and the roller are spaced apart, and the inclined end can be twisted and deformed obliquely upward through the deformation groove.