Mouse back skin wound traction device

Abstract

The utility model relates to the technical field of animal skin wound experiment instruments, in particular to a mouse back skin wound traction device which comprises a traction mechanism and a fixing mechanism. The fixing mechanism is installed at the bottom of the traction mechanism, the traction mechanism comprises two first fixing plates, first threaded holes are formed in one sides of the two first fixing plates, and first threaded rods are in threaded connection with the inner side walls of the two first threaded holes; the adjacent ends of the two first threaded rods are fixedly connected with a connecting block. In the using process of the mouse fixing device, the using number of the fixing blocks is adjusted according to the size of a mouse, the using number of the fixing blocks is increased, so that the fixing requirements of different mice are met, the angle of the fixing blocks can be adjusted, and the mouse fixing device is convenient to use and high in practicability. The fixing block is more attached to the skin of the mouse, the fixing effect is improved, and therefore the back skin wound surface of the mouse can be pulled conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of instruments for animal skin wound experiments, in particular to a device for pulling the skin wound on the back of a mouse. Background Art

[0002] Hypertrophic scars occur in wounds caused by deep damage to the dermis, often causing aesthetic and functional damage to patients, seriously affecting their quality of life. Since the collection of human skin wounds and scar specimens in clinical practice is often limited, most research in this field requires the establishment of experimental animal models. However, differences between species make commonly used experimental animals very different from humans in many aspects, including skin structure, wound healing process, scar formation, and scar hyperplasia, which brings great difficulties to experimental research. The commonly used mouse skin wound stretching model is to install a skin stretcher on the back of the mouse. When the cut wound on the mouse's back is healing, mechanical tension is applied for 10 days to induce the production of hypertrophic scars. This model has the characteristics of human skin hypertrophic scars to a certain extent.

[0003] A Chinese patent publication (publication number: CN218870559U) discloses a stretching device for making an animal skin hypertrophic scar model, wherein the two fixing blocks correspond to a first fixing block and a second fixing block respectively, the first fixing block and the second fixing block are fixed to the skin on both sides of the wound respectively, the second fixing block is provided with three first through holes arranged at intervals, a bolt is provided in the middle hole of the three first through holes, guide rails are provided in the holes on both sides of the three first through holes, a second screw hole is provided on the top surface of the second fixing block, the second screw hole is perpendicular to and communicates with the middle hole of the three first through holes, and a screw is provided in the second screw hole. The nail and the screw can tighten the bolt after being screwed into the second screw hole. The utility model adopts a screw tightening screw to control the distance that the second fixing block moves along the axial direction of the bolt. The second fixing block cannot slide along the guide rail, thereby maintaining a certain tensioning distance, providing a fixed tensioning force, and can conveniently and frequently adjust the tensioning device to apply mechanical tension. However, in actual use, it is not convenient to adjust the fixing area of ​​the fixing block according to the size of the mouse, and it is difficult to meet the fixation requirements of different mice, resulting in a reduced fixation effect, which is not conducive to the traction of the mouse back skin wound. For this reason, a mouse back skin wound traction device is proposed. Utility Model Content

[0004] In view of this, the present invention provides a mouse back skin wound traction device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is achieved as follows: a traction device for a mouse back skin wound, comprising a traction mechanism and a fixing mechanism; the fixing mechanism is installed at the bottom of the traction mechanism, the traction mechanism comprising two first fixing plates, one side of each of the two first fixing plates is provided with a first threaded hole, the inner side walls of the two first threaded holes are threadedly connected to a first threaded rod, and adjacent ends of the two first threaded rods are fixedly connected to a connecting block;

[0006] The bottom of the first fixing plate is fixedly connected to a connecting plate, and three fixing blocks are evenly provided on the front and rear of the connecting plate. A U-shaped plate is hingedly connected to the side of the fixing block close to the connecting plate, and a second threaded rod is fixedly connected to the side of the U-shaped plate close to the connecting plate. Second threaded holes are provided on the front and rear surfaces of the connecting plate and on the side where the fixing block and the connecting plate repel each other. The second threaded rod is threadedly connected to the inner side wall of the second threaded hole, and a first suture hole is provided on the upper surface of the fixing block.

[0007] Further preferably, two guide holes are symmetrically provided on one side of the first fixing plate, and guide rods are slidably connected to inner side walls of the guide holes.

[0008] Further preferably, a plurality of first through holes are evenly formed on the outer side wall of the connection block.

[0009] Further preferably, two sockets are symmetrically provided on the front surface and the rear surface of the connecting plate and on the side where the fixed block repels the connecting plate, and two second through holes are symmetrically provided on the side of the U-shaped plate close to the connecting plate, and the inner side wall of the second through hole is slidably connected with an insertion rod, which is inserted into the inner side wall of the socket.

[0010] Further preferably, a slide groove is provided on both sides of the U-shaped plate, the slide groove is connected to the second through hole, the inner side wall of the slide groove is slidably connected to a slider, and the slider is fixedly connected to the outer side wall of the insertion rod.

[0011] Further preferably, a second fixing plate is fixedly connected to one side of the connecting plate, and two second suture holes are symmetrically provided on the upper surface of the second fixing plate.

[0012] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0013] During use, the utility model adjusts the number of fixing blocks used according to the size of the mouse, and increases the number of fixing blocks used to meet the fixation needs of different mice. The angles of the fixing blocks can be adjusted to make the fixing blocks fit the mouse skin more closely, thereby improving the fixation effect and facilitating the traction of the skin wound on the back of the mouse.

[0014] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a structural diagram of the mouse back skin wound traction device of the utility model;

[0017] Figure 2 This is a structural diagram of the fixing mechanism of the utility model;

[0018] Figure 3 This is a structural diagram of the connecting plate of the utility model;

[0019] Figure 4 This is a structural diagram of the fixed block of the utility model;

[0020] Figure 5 For this utility model Figure 4 Another perspective structure diagram.

[0021] Figure numerals: 1. pulling mechanism; 11. first fixing plate; 12. first threaded hole; 13. first threaded rod; 14. connecting block; 15. first through hole; 16. guide hole; 17. guide rod; 2. fixing mechanism; 21. connecting plate; 22. second threaded hole; 23. insertion hole; 24. fixing block; 25. U-shaped plate; 251. second through hole; 252. slide groove; 253. insertion rod; 254. slider; 26. second threaded rod; 27. first suture hole; 28. second fixing plate; 29. ​​second suture hole. DETAILED DESCRIPTION

[0022] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-5As shown, an embodiment of the present invention provides a traction device for a mouse back skin wound, comprising a traction mechanism 1 and a fixing mechanism 2; the fixing mechanism 2 is mounted at the bottom of the traction mechanism 1, and the traction mechanism 1 comprises two first fixing plates 11, one side of each of the two first fixing plates 11 is provided with a first threaded hole 12, the inner side walls of the two first threaded holes 12 are threadedly connected to a first threaded rod 13, and adjacent ends of the two first threaded rods 13 are fixedly connected to a connecting block 14;

[0025] The bottom of the first fixing plate 11 is fixedly connected to a connecting plate 21, and three fixing blocks 24 are evenly provided on the front and rear of the connecting plate 21. A U-shaped plate 25 is hingedly connected to the side of the fixing block 24 close to the connecting plate 21, and a second threaded rod 26 is fixedly connected to the side of the U-shaped plate 25 close to the connecting plate 21. Second threaded holes 22 are provided on the front and rear surfaces of the connecting plate 21 and on the side where the fixing block 24 repels the connecting plate 21. The second threaded rod 26 is threadedly connected to the inner side wall of the second threaded hole 22, and a first suture hole 27 is provided on the upper surface of the fixing block 24.

[0026] In one embodiment, two guide holes 16 are symmetrically opened on one side of the first fixing plate 11, and the inner side wall of the guide hole 16 is slidably connected to the guide rod 17; through the setting of the guide rod 17, when the first threaded rod 13 is rotated, the first fixing plate 11 slides on the guide rod 17, thereby improving the stability of the first fixing plate 11.

[0027] In one embodiment, a plurality of first through holes 15 are evenly formed on the outer side wall of the connection block 14 . Through the provision of the first through holes 15 , a tool is inserted into the first through holes 15 to facilitate the rotation of the connection block 14 .

[0028] In one embodiment, two insertion holes 23 are symmetrically provided on the front surface and the rear surface of the connecting plate 21 and on the side where the fixing block 24 repels the connecting plate 21. Two second through holes 251 are symmetrically provided on the side of the U-shaped plate 25 close to the connecting plate 21. The inner side wall of the second through hole 251 is slidably connected with an insertion rod 253, and the insertion rod 253 is inserted into the inner side wall of the insertion hole 23; through the setting of the insertion rod 253, when the second threaded rod 26 is rotated and inserted into the second threaded hole 22, the insertion rod 253 is inserted into the insertion hole 23, preventing the second threaded rod 26 from rotating easily, thereby improving the stability of the U-shaped plate 25.

[0029] In one embodiment, a sliding groove 252 is provided on both sides of the U-shaped plate 25, and the sliding groove 252 is connected to the second through hole 251. The inner wall of the sliding groove 252 is slidably connected with a slider 254, and the slider 254 is fixedly connected to the outer wall of the insertion rod 253; through the setting of the slider 254, the slider 254 is slid in the sliding groove 252, which facilitates the movement of the insertion rod 253.

[0030] In one embodiment, a second fixing plate 28 is fixedly connected to one side of the connecting plate 21, and two second suture holes 29 are symmetrically opened on the upper surface of the second fixing plate 28; through the setting of the second fixing plate 28, the second fixing plate 28 fits against the skin, and the sutures pass through the skin and the second suture holes 29 to fix the position of the second fixing plate 28, thereby improving the stability of the connecting plate 21.

[0031] When the utility model is working: first, the positions of the two first fixing plates 11 are adjusted according to the size of the wound surface, the tool is inserted into the first through hole 15, and the connecting block 14 is rotated to drive the first threaded rod 13 to rotate. The first threaded rod 13 rotates in the first threaded hole 12 on the first fixing plate 11, thereby adjusting the position of the first fixing plate 11, and the guide rod 17 slides in the guide hole 16 to improve the stability of the first fixing plate 11. After the positions of the two first fixing plates 11 are adjusted, the number of fixing blocks 24 used is adjusted according to the size of the mouse. If it is necessary to increase the fixing block 24, the second threaded rod 26 on the U-shaped plate 25 is rotated, and the U-shaped plate 25 is installed on the newly added fixing block 24. The second threaded rod 26 is inserted into the second threaded hole 22 on the tail end fixing block 24 to fix the position of the fixing block 24, and then the insertion rod 253 is inserted into the insertion hole 23 to prevent the second threaded rod 26 from rotating easily, thereby improving the stability of the U-shaped plate 25. If it is necessary to reduce the use of the fixing block 24, the insertion rod 253 is pulled out from the insertion hole 23, and then the fixing block 24 is rotated to remove the second threaded rod 26 from the second threaded hole 22. Then, according to the arc surface of the skin, the angle of the fixing block 24 is adjusted. The fixing block 24 is hinged to the U-shaped plate 25 so that the fixing block 24 fits more closely to the skin. Then, the suture is passed through the skin and the first suture hole 27 to fix the position of the fixing block 24.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A mouse back skin wound traction device, characterized by: The invention comprises a pulling mechanism (1) and a fixing mechanism (2); the fixing mechanism (2) is installed at the bottom of the pulling mechanism (1); the pulling mechanism (1) comprises two first fixing plates (11); a first threaded hole (12) is provided on one side of the two first fixing plates (11); the inner side walls of the two first threaded holes (12) are threadedly connected to first threaded rods (13); and adjacent ends of the two first threaded rods (13) are fixedly connected to connecting blocks (14); The bottom of the first fixing plate (11) is fixedly connected to a connecting plate (21), and three fixing blocks (24) are evenly arranged on the front and rear of the connecting plate (21). A U-shaped plate (25) is hingedly connected to the side of the fixing block (24) close to the connecting plate (21), and a second threaded rod (26) is fixedly connected to the side of the U-shaped plate (25) close to the connecting plate (21). Second threaded holes (22) are provided on the front and rear surfaces of the connecting plate (21) and on the side where the fixing block (24) and the connecting plate (21) repel each other. The second threaded rod (26) is threadedly connected to the inner side wall of the second threaded hole (22), and a first suture hole (27) is provided on the upper surface of the fixing block (24).

2. The mouse back skin wound traction device according to claim 1, characterized in that: Two guide holes (16) are symmetrically provided on one side of the first fixing plate (11), and the inner side walls of the guide holes (16) are slidably connected to guide rods (17).

3. The mouse back skin wound traction device according to claim 1, characterized in that: A plurality of first through holes (15) are evenly formed on the outer side wall of the connection block (14).

4. The mouse back skin wound traction device according to claim 1, characterized in that: Two insertion holes (23) are symmetrically provided on the front surface and the rear surface of the connecting plate (21) and on the side of the fixing block (24) that repels the connecting plate (21); two second through holes (251) are symmetrically provided on the side of the U-shaped plate (25) close to the connecting plate (21); an insertion rod (253) is slidably connected to the inner side wall of the second through hole (251); and the insertion rod (253) is plugged into the inner side wall of the insertion hole (23).

5. The mouse back skin wound traction device according to claim 4, characterized in that: Both sides of the U-shaped plate (25) are provided with a sliding groove (252), the sliding groove (252) is connected to the second through hole (251), the inner side wall of the sliding groove (252) is slidably connected to a slider (254), and the slider (254) is fixedly connected to the outer side wall of the insertion rod (253).

6. The mouse back skin wound traction device according to claim 1, characterized in that: A second fixing plate (28) is fixedly connected to one side of the connecting plate (21), and two second suture holes (29) are symmetrically provided on the upper surface of the second fixing plate (28).

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