Variable tension structure for animal scar wounds and adjustment method

Abstract

The application provides a variable tension structure adjusting method for animal scar wounds, which comprises the following steps: S1, making an animal model wound; S2, making a variable tension structure; S3, fixing a fixator; S4, installing a pin; S5, treating the wound; S6, changing the dressing; S7, removing the variable tension structure; in the step S6, if the size or tension of the wound needs to be adjusted, the dressing is removed, the pin is separated from the fixator, the fixator is adjusted as required, and the steps S4-S7 are repeated. The fixator is installed first, the fixator is fixed by using a suture to fix the wound edge, then the pin is installed to limit the fixator, when the dressing is changed, the fixing device does not need to be replaced, only the position of the fixator needs to be adjusted and then the pin is reinstalled, so that the animal scar model can be successfully constructed, the position adjustment of the fixator drives the skin to be adjusted, the tension of the wound is increased, and the wound contraction is limited.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary device technology, specifically to a variable tension structure and adjustment method for animal scar wounds. Background Technology

[0002] Scarring is a natural outcome of severe trauma in animals, and scars following severe skin trauma often lead to varying degrees of functional impairment and cosmetic defects. Exploring the mechanisms of scar formation, progression, and prevention is a hot topic in biomedical research. Animal models are the most commonly used research method. However, because the presence of adipose muscle in animal skin causes wounds to heal primarily through contraction, additional drugs are needed to construct animal scar models, making it difficult to create natural scar wounds that meet research standards. Residual drugs can also interfere with the research to some extent.

[0003] Scientific research shows that scar formation is related to multiple factors. Wound tension is one of the key factors; applying tension to the wound during the healing process can lead to natural scar formation and avoid drug interference. Therefore, increasing wound tension and limiting wound contraction is a key approach and method for successfully constructing animal scar models.

[0004] Although wound fixation rings and anti-contraction rings exist, they suffer from the following technical drawbacks: some products (CN214413854U) cannot limit wound contraction caused by fat and muscle due to insufficient material rigidity or the way they are connected to the wound; some products (CN214967043U) can generate scars by severing surrounding tissues, but this comes at the cost of disrupting tissue continuity, raising doubts about the reliability of the scar model; some products (CN213430743U, CN107374766A) can change tension, but they are mostly suitable for linear scar formation, and the devices are large, require multiple disassemblies and reassemblies, and are cumbersome to operate.

[0005] Therefore, how to design a variable tension fixator that can be fixed around the wound edge, restrict wound contraction, does not require disassembly, allows for multiple adjustments to wound size and tension, facilitates dressing changes, and is based on 3D printing to generate animal scar wounds, and how to design a variable tension structure adjustment method for animal scar wounds, increasing wound tension, restricting wound contraction, and successfully constructing animal scar models, have become urgent problems to be solved. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention provides a variable tension structure and adjustment method for animal scar wounds to solve at least one of the above-mentioned technical problems.

[0007] The technical solution of this invention is: a method for adjusting the variable tension structure of animal scar wounds, comprising the following steps:

[0008] S1. Create an animal model wound; laboratory mice can be used as the animal.

[0009] S2. Fabrication of the variable tension structure,

[0010] Four 3D-printed fasteners and corresponding pins were manufactured using 3D printing technology.

[0011] S3. Fixture installation.

[0012] T1. The four-piece fixator is connected end to end. Assemble the fixator and adjust it to the appropriate size. Place the variable tension structure above the wound so that the wound is located in the central cavity.

[0013] T2. Select an appropriate suture hole according to the shape of the wound, and use sutures to fix the wound edges;

[0014] S4. Pin installation.

[0015] As needed, the pin is passed through the slot hole and the opening groove to fix the scale;

[0016] S5. Wound treatment,

[0017] Use a dressing to bandage the variable tension structure along with the wound;

[0018] S6. Change the dressing.

[0019] U1. The fixation device does not need to be replaced when changing the dressing;

[0020] U2. Adjust the wound size or tension, remove the dressing, separate the pin from the fixator, adjust the fixator as needed, and repeat steps S4 to S5;

[0021] S7. Removal of the variable tension structure.

[0022] After scar formation, the sutures are removed, and the variable tension structure is taken off.

[0023] This invention employs a method of first installing a fixator, then using sutures to secure the fixator and thus fix the wound edges, followed by installing a pin to limit the fixator's position. When changing dressings, it is not necessary to replace the fixation device; only the position of the fixator needs to be adjusted and the pin reinstalled to successfully construct an animal scar model. Furthermore, the adjustment of the fixator's position causes the skin to adjust accordingly, increasing wound tension and limiting wound contraction.

[0024] The technical solution of the present invention is: a variable tension structure for animal scar wounds, comprising four 3D-printed fixators and pins for fixing adjacent fixators. The four fixators are connected end to end and arranged around the animal scar wound. The animal can be a laboratory mouse. Each fixator includes a mounting handle and a scale. The mounting handle is provided with a combination hole, which includes a rectangular through hole for adjacent scales to pass through, and a slot hole that penetrates the rectangular through hole. The scale is provided with dozens of suture holes arranged at intervals, and dozens of open slots arranged at intervals are provided on one end face of the scale. The pin passes through the slot hole and the open slot to fix the scale.

[0025] This invention features a simple structure and easy assembly. Sutures are used to fix the wound edges through suture holes, and a fixator is used to secure the wound around the edges, limiting wound contraction. The fixator exposes the wound, facilitating wound cleaning, dressing changes, and dressing replacement. The use of 3D-printed material improves adhesion, and the fixator can be trimmed as needed. By using pins and different slots on a ruler, the size of the fixator can be adjusted multiple times, thereby adjusting the wound size and changing wound tension.

[0026] Preferably, the slot hole is a "T"-shaped through hole, and the pin includes a base plate. A pin post is provided on the end face of the base plate. The pin post is a "T"-shaped column structure, and the web of the "T"-shaped column structure can be inserted into the opening slot.

[0027] The present invention uses a T-shaped column structure with the same cross-section and T-shaped through hole size. The T-shaped column structure can be inserted into the opening slot through the slot hole via the web of the T-shaped column structure. The structure is simple and easy to assemble. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the installation structure of the variable tension structure of the present invention.

[0029] Figure 2 This is a front view of the fixator of the present invention.

[0030] Figure 3 for Figure 2 The right view.

[0031] Figure 4 This is a front view of the latch of the present invention.

[0032] Figure 5 for Figure 4 The left view.

[0033] Figure 6 This is a flowchart of the present invention.

[0034] In the diagram: 1. Fixture; 2. Pin; 101. Mounting handle; 102. Ruler; 103. Slot hole; 104. Seam hole; 105. Rectangular through hole; 201. Base plate; 202. Pin post. Detailed Implementation

[0035] The present invention will now be further described with reference to the accompanying drawings.

[0036] See Figure 1-6 The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0037] Example 1: A variable tension structure for animal scar wounds, referenced Figure 1 , Figure 2 , Figure 3 The device includes four 3D-printed fixators 1 and pins 2 for fixing adjacent fixators 1. The four fixators 1 are connected end to end and arranged around the animal's scar wound. Each fixator 1 includes a mounting handle 101 and a scale 102. The mounting handle 101 is provided with a combination hole, which includes a rectangular through hole 105 for adjacent scales 102 to pass through, and a slot hole 103 that passes through the rectangular through hole 105. The scale 102 is provided with dozens of suture holes 104 arranged at intervals, and dozens of open slots arranged at intervals are provided on one end face of the scale 102. The pins 2 pass through the slot holes 103 and the open slots to fix the scale 102. This invention features a simple structure and easy assembly. Sutures are used to fix the wound edges through suture holes, and a fixator is used to secure the wound around the edges, limiting wound contraction. The fixator exposes the wound, facilitating wound cleaning, dressing changes, and dressing replacement. The use of 3D-printed material improves adhesion, and the fixator can be trimmed as needed. By using pins and different slots on a ruler, the size of the fixator can be adjusted multiple times, thereby adjusting the wound size and changing wound tension.

[0038] Example 2: Based on Example 1, each of the scales 102 has graduation lines on its other end face. The graduation lines and opening slots are arranged along the length of the scale 102, with the opening slots corresponding to the graduation lines. This invention uses the corresponding arrangement of the opening slots and graduation lines, along with the opening slots and pins, to fix the relative positions of each device.

[0039] Example 3: Based on Example 2, each of the suture holes 104 is located between two adjacent scale lines. This invention uses suture holes in conjunction with scale lines to provide a fixing point for the suture.

[0040] Example 4: Based on Example 2, the thickness of the scale 102 is one-third the thickness of the mounting handle 101, and the rectangular through hole 105 has the same cross-sectional dimensions as the scale 102. This invention uses a scale installed within the rectangular through hole of the mounting handle, resulting in a simple structure and convenient assembly.

[0041] Example 5: Based on Example 2, with reference to... Figure 4 , Figure 5 The slot hole 103 is a T-shaped through hole. The pin 2 includes a base plate 201, and a pin post 202 is provided on the end face of the base plate 201. The pin post 202 is a solid, rigid T-shaped columnar structure. The cross-section of the T-shaped columnar structure is the same as the size of the T-shaped through hole. The web of the T-shaped columnar structure can be inserted into the opening slot through the slot hole 103. The length of the pin post 202 is greater than the thickness of the mounting handle 101. This invention uses a pin post with a T-shaped columnar structure, which can be inserted into the opening slot through the web of the T-shaped columnar structure. The structure is simple and easy to assemble.

[0042] Example 6: A method for adjusting the variable tension structure for animal scar wounds, referenced. Figure 6 The following steps are included:

[0043] S1. Create animal model wounds;

[0044] S2. Fabrication of the variable tension structure,

[0045] Four 3D printed fasteners 1 and corresponding pins 2 were produced using 3D printing technology.

[0046] S3. Fixture installation.

[0047] T1. The four-piece fixator 1 is connected end to end. The fixator 1 is assembled and adjusted to a suitable size. The variable tension structure is placed above the wound so that the wound is located in the central cavity.

[0048] T2. Select an appropriate suture hole according to the shape of the wound, and use sutures to fix the wound edges;

[0049] S4. Pin installation.

[0050] As needed, the pin 2 is passed through the slot hole 103 and the opening slot to fix the scale 102;

[0051] S5. Wound treatment,

[0052] Use a dressing to bandage the variable tension structure along with the wound;

[0053] S6. Change the dressing.

[0054] The fixation device does not need to be replaced when changing the dressing;

[0055] S7. Removal of the variable tension structure.

[0056] After scar formation, remove the sutures and the variable tension structure. In step S6, if it is necessary to adjust the wound size or tension, remove the dressing, separate the pin 2 from the fixator 1, adjust the fixator 1 as needed, and repeat steps S4 to S7.

[0057] This invention employs a method of first installing a fixator, then using sutures to secure the fixator and thus fix the wound edges, followed by installing a pin to limit the fixator's position. When changing dressings, it is not necessary to replace the fixation device; only the position of the fixator needs to be adjusted and the pin reinstalled to successfully construct an animal scar model. Furthermore, the adjustment of the fixator's position causes the skin to adjust accordingly, increasing wound tension and limiting wound contraction.

[0058] In specific implementation, (1) the dimensions of the fixture 1 are 40.5 mm in length, 6.0 mm in width, and 3 mm in thickness; the dimensions of the mounting handle 101 are 9.5 mm in length, 6.0 mm in width, and 3 mm in thickness; the dimensions of the scale 102 are 7.5 mm in length, 6.0 mm in width, and 1 mm in thickness.

[0059] (2) The rectangular through hole 105 of the combination hole is located in the center of the end face of the mounting handle 101, and is 1.0mm away from each side of the mounting handle 101; the slot hole 103 of the combination hole is "T" shaped, with a length of 3.0mm and a width of 2.1mm, and is used in conjunction with the pin 2.

[0060] (3) When the ruler 102 is 3D printed, the 0 mark coincides with the contact end of the mounting handle 101; the ruler 102 has a length of 31.0 mm, a width of 6.0 mm, and a thickness of 1 mm; the ruler 102 is used to mark the length.

[0061] (4) The diameter of the suture hole 104 is 1.0 mm. This hole provides a fixation point for the suture.

[0062] (5) The pin 202 is a solid, rigid "T"-shaped column structure. The size of the pin 202 is the same as that of the slot hole 103. The length of the pin 202 must be >3mm.

[0063] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for adjusting the variable tension structure of animal scar wounds, characterized in that, The following steps are included: S1. Create animal model wounds; S2. Fabrication of the variable tension structure, Four 3D printed fixtures (1) and corresponding pins (2) are made using 3D printing technology. Each fixture (1) includes a mounting handle (101) and a scale (102). The mounting handle (101) is provided with a combination hole, which includes a rectangular through hole (105) that allows adjacent scales (102) to pass through. The combination hole also includes a slot hole (103) that passes through the rectangular through hole (105). The scale (102) is provided with dozens of stitching holes (104) arranged at intervals. The scale (102) is provided with dozens of open slots arranged at intervals on one side end face. The pin (2) passes through the slot hole (103) and the open slot to fix the scale (102). S3. Fixture installation. T1. Four-piece fixation device (1) is connected end to end and placed around the animal's scar wound. Assemble the fixation device (1) and adjust it to the appropriate size. Place the variable tension structure above the wound so that the wound is located in the central cavity. T2. Select an appropriate suture hole according to the shape of the wound, and use sutures to fix the wound edges; S4. Pin installation. As needed, the pin (2) is passed through the slot hole (103) and the opening slot to fix the scale (102); S5. Wound treatment, Use a dressing to bandage the variable tension structure along with the wound; S6. Change the dressing. The fixation device does not need to be replaced when changing the dressing; If you need to adjust the size or tension of the wound, remove the dressing, separate the pin (2) from the fixator (1), adjust the fixator (1) as needed, and repeat steps S4 to S7. S7. Removal of the variable tension structure. After scar formation, the sutures are removed, and the variable tension structure is taken off.

2. The method for adjusting the variable tension structure for animal scar wounds according to claim 1, characterized in that: Each of the scales (102) has a scale line on the other end face. The scale line and the opening groove are arranged along the length direction of the scale (102), and the opening groove is arranged corresponding to the scale line.

3. The method for adjusting the variable tension structure for animal scar wounds according to claim 2, characterized in that: Each of the suture holes (104) is located between two adjacent scale lines.

4. The method for adjusting a variable tension structure for animal scar wounds according to claim 2, characterized in that: The thickness of the scale (102) is one-third of the thickness of the mounting handle (101), and the rectangular through hole (105) has the same cross-sectional dimensions as the scale (102).

5. A method for adjusting a variable tension structure for animal scar wounds according to claim 2, characterized in that: The slot hole (103) is a "T" shaped through hole; the pin (2) includes a base plate (201), and a pin post (202) is provided on the end face of the base plate (201). The pin post (202) is a "T" shaped column structure, and the web of the "T" shaped column structure can be inserted into the opening slot through the slot hole (103).

6. A method for adjusting a variable tension structure for animal scar wounds according to claim 5, characterized in that: The length of the pin (202) is greater than the thickness of the mounting handle (101).

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