Traction bow
By designing an adjustable traction bow structure and protective sleeve, the compatibility and safety issues were resolved, enabling the traction bow to be adapted for multiple purposes and the Kirschner wire to be securely fixed, thus avoiding injury to medical staff and patients.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FIRST PEOPLES HOSPITAL OF QUJING
- Filing Date
- 2024-12-16
- Publication Date
- 2026-04-24
AI Technical Summary
Existing traction bows lack the ability to be adjusted to accommodate patients of different body types and fracture sites, and the sharp ends of Kirschner wires can easily scratch medical staff and patients.
A traction bow was designed, comprising a first adjustment mechanism, a second adjustment mechanism, a universal traction mechanism, a limiting rubber sleeve, and a telescopic protective sleeve. The telescopic adjustment mechanism adapts to different body types and fracture sites, and the limiting rubber sleeve and telescopic protective sleeve fix the Kirschner wires to avoid injury from sharp ends.
The adjustable size of the traction bow can be adapted to different body types and fracture sites, and the fixed Kirschner wire can be used to avoid injury, thus improving safety and applicability.
Smart Images
Figure CN224155741U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and in particular to a traction bow. Background Technology
[0002] A traction bow is a medical device primarily used for the treatment of orthopedic diseases. It is mainly used in conjunction with slings and Kirschner wires. After the Kirschner wires help doctors precisely control the position of the fracture ends, they can provide support and fixation inside the bone. Through the action of the slings and weights, traction and tensile forces are applied to help treat orthopedic diseases such as fractures, dislocations, joint diseases, and spinal diseases.
[0003] On the one hand, different sizes of traction bows are needed for patients of different body types or for fractures in different parts of the body. There are very few traction bows that can be perfectly adapted to different patients and fracture sites. On the other hand, after the Kirschner wire is fixed by the traction bow, the end of the Kirschner wire that passes through the traction bow is very sharp and often scratches or punctures medical staff and patients. Therefore, in clinical practice, vials are often used to cover both ends of the Kirschner wire. However, vials are very fragile and can easily cause secondary injury to patients. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a traction bow to solve the above-mentioned problem.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A traction bow, comprising: a first adjusting mechanism, two second adjusting mechanisms, two universal pulling mechanisms, two limiting rubber sleeves, two telescopic protective sleeves, a first adjusting locking block, and two second adjusting locking blocks; the first adjusting mechanism is a telescopic arc-shaped structure, the two second adjusting mechanisms are telescopically and retractably arranged at both ends of the first adjusting mechanism, the two second adjusting mechanisms are arranged in parallel, the universal pulling mechanism is installed on the first adjusting mechanism, the two limiting rubber sleeves are arranged at the ends of the two second adjusting mechanisms away from the first adjusting mechanism, the two telescopic protective sleeves are arranged at the ends of the two second adjusting mechanisms away from each other, and are fitted onto the two limiting rubber sleeves, the first adjusting locking block is movably arranged on the first adjusting mechanism, and the two second adjusting locking blocks are movably arranged on the two second adjusting mechanisms.
[0006] The beneficial effects of this utility model are as follows: the first and second adjustment mechanisms are advantageous in changing the size of the traction bow through telescopic adjustment, thereby adapting to patients of different body types and different fracture sites; the first and second adjustment locking blocks are advantageous in canceling the locking state of the first and second adjustment mechanisms before adjustment, and locking and fixing the first and second adjustment mechanisms after adjustment; the universal traction mechanism is advantageous in applying traction force in conjunction with the suspension rope and weight after adjustment; the limiting rubber sleeve is advantageous in firmly wrapping and fixing the Kirschner wire, and the telescopic protective sleeve is placed on the end of the Kirschner wire to avoid injury to medical staff and patients from the sharp end of the Kirschner wire.
[0007] Based on the above technical solution, the present invention can be further improved as follows.
[0008] Furthermore, the first adjustment mechanism includes a first outer adjustment sleeve and a first inner adjustment rod. The first inner adjustment rod is an arc-shaped rod structure, and the first outer adjustment sleeve is an arc-shaped tubular structure adapted to be installed on the first inner adjustment rod. The two universal traction mechanisms are installed one-to-one on the side walls of the first outer adjustment sleeve and the first inner adjustment rod at opposite ends. The first adjustment locking block can move up and down through the first outer adjustment sleeve.
[0009] The beneficial effects of adopting the above-mentioned further scheme are: the first outer adjustment sleeve is adapted to be installed on the first inner adjustment rod, which is conducive to realizing the change of the arc length of the entire first adjustment mechanism by extension and retraction, and thus realizing the change of the distance between the two second adjustment mechanisms, so as to adapt to patients of different body types and different fracture sites.
[0010] Furthermore, a first adjusting rack is provided on the side wall of the first inner adjusting rod along the outline of the first inner adjusting rod.
[0011] The beneficial effects of adopting the above-mentioned further solution are: the first adjusting rack and the first adjusting locking block are conducive to achieving fixation after telescopic adjustment and cancellation of fixation before telescopic adjustment.
[0012] Furthermore, the first adjusting locking block includes: a first adjusting handle, a first connecting rod, and a plurality of first locking teeth; the plurality of first locking teeth are arranged side by side and are toothed structures adapted to the first adjusting rack; the first connecting rod can move up and down through the side wall of the first outer adjusting sleeve, and its two ends are connected to the first adjusting handle and the first locking teeth respectively.
[0013] The beneficial effects of adopting the above-mentioned further solution are: the first adjusting handle is conducive to adjusting the vertical displacement of the first connecting rod and multiple first locking tooth blocks by pulling them up and down, thereby enabling the first locking tooth blocks to engage or disengage with the toothed structure on the first adjusting rack. When engaged, it can restrict the extension and retraction adjustment of the first outer adjusting sleeve and the first inner adjusting rod, and when disengaged, it can continue to achieve extension and retraction adjustment.
[0014] Furthermore, the universal traction mechanism includes: a fixed base, a universal ball, and a traction hook; the fixed bases of the two universal traction mechanisms are installed one-to-one on the side walls of the first outer adjusting sleeve and the first inner adjusting rod at opposite ends, and the universal ball is rotatably adapted to be disposed in the fixed base and connected to the traction hook.
[0015] The beneficial effects of adopting the above-mentioned further solution are: the fixed seat is conducive to fixing the universal ball on the first outer adjusting sleeve and the first inner adjusting rod. After the first outer adjusting sleeve and the first inner adjusting rod are adjusted to the arc length, the universal ball rolls in the fixed seat, which is conducive to adjusting the position of the traction hook, and applies the required traction force in conjunction with the external sling and weight.
[0016] Furthermore, the second adjustment mechanism includes a second outer adjustment sleeve and a second inner adjustment rod; the second outer adjustment sleeve is a tubular structure adapted to be installed on the second inner adjustment rod, and the second adjustment locking block can move up and down through the second outer adjustment sleeve.
[0017] The beneficial effect of adopting the above-mentioned further solution is that the second outer adjustment sleeve is adapted to be installed on the second inner adjustment rod, which is conducive to adjusting the length of the second adjustment mechanism by telescopic adjustment to adapt to patients of different body types and different fracture sites.
[0018] Furthermore, a second adjusting rack is provided on the side wall of the second inner adjusting rod along the length direction of the second inner adjusting rod.
[0019] The beneficial effects of adopting the above-mentioned further solution are: the second adjusting rack, in conjunction with the second adjusting locking block, facilitates the fixing after telescopic adjustment and the cancellation of fixing before telescopic adjustment.
[0020] Furthermore, the second adjusting locking block includes: a second adjusting handle, a second connecting rod, and a plurality of second locking teeth; the plurality of second locking teeth are arranged side by side and are toothed structures adapted to the second adjusting rack; the second connecting rod can move up and down through the side wall of the second outer adjusting sleeve, and its two ends are connected to the second adjusting handle and the second locking teeth respectively.
[0021] The beneficial effects of adopting the above-mentioned further solution are: the second adjusting handle is conducive to adjusting the vertical displacement of the second connecting rod and multiple second locking tooth blocks by pulling them up and down, thereby enabling the second locking tooth blocks to engage or disengage with the toothed structure on the second adjusting rack. When engaged, it can restrict the extension and retraction adjustment of the second outer adjusting sleeve and the second inner adjusting rod. When disengaged, it can continue to achieve extension and retraction adjustment.
[0022] Furthermore, the limiting rubber sleeve is adapted to pass through the end of the second inner adjusting rod away from the second outer adjusting sleeve, and the limiting rubber sleeve is axially provided with a channel for the Kirschner wire to pass through, and the limiting rubber sleeve wraps around the side wall of the Kirschner wire.
[0023] The beneficial effect of adopting the above-mentioned further solution is that the limiting sleeve is axially provided with a channel for the Kirschner wire to pass through, and the limiting sleeve is wrapped around the side wall of the Kirschner wire. This is beneficial to use the limiting sleeve to tightly fix the Kirschner wire after it passes through the limiting sleeve axially, thus preventing the Kirschner wire from shifting during the pulling process.
[0024] Furthermore, the telescopic protective sleeve is telescopically fitted onto the end of the Kirschner wire that passes through the limiting rubber sleeve.
[0025] The beneficial effect of adopting the above-mentioned further solution is that the telescopic protective sleeve can cover the ends of Kirschner wires of different lengths by telescopically extending, thereby avoiding injury to medical staff and patients from the sharp ends of the Kirschner wires. Attached Figure Description
[0026] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;
[0027] Figure 2 A schematic diagram of the overall structure and Kirschner wires provided for embodiments of this utility model;
[0028] Figure 3 A schematic diagram of the structure of the first adjustment mechanism and the universal traction mechanism provided in the embodiments of this utility model;
[0029] Figure 4 This is a schematic diagram of the structure of the second adjustment mechanism provided in an embodiment of the present utility model;
[0030] Figure 5 A schematic diagram of the structure of the first adjusting locking block provided in an embodiment of this utility model.
[0031] The attached diagram lists the components represented by each number as follows:
[0032] 1. First adjusting mechanism; 2. Second adjusting mechanism; 3. Universal traction mechanism; 4. Limiting sleeve; 5. Telescopic protective sleeve; 6. First adjusting locking block; 7. Second adjusting locking block; 11. First outer adjusting sleeve; 12. First inner adjusting rod; 21. Second outer adjusting sleeve; 22. Second inner adjusting rod; 31. Fixed base; 32. Universal ball; 33. Traction hook; 61. First adjusting handle; 62. First connecting rod; 63. First locking tooth block; 71. Second adjusting handle; 72. Second connecting rod; 73. Second locking tooth block; 121. First adjusting rack; 221. Second adjusting rack. Detailed Implementation
[0033] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0034] like Figure 1 and Figure 2 As shown, a traction bow includes: a first adjusting mechanism 1, two second adjusting mechanisms 2, two universal traction mechanisms 3, two limiting rubber sleeves 4, two telescopic protective sleeves 5, a first adjusting locking block 6, and two second adjusting locking blocks 7; the first adjusting mechanism 1 is a telescopic arc-shaped structure, the two second adjusting mechanisms 2 are telescopically and correspondingly arranged at both ends of the first adjusting mechanism 1, the two second adjusting mechanisms 2 are arranged in parallel, the universal traction mechanism 3 is mounted on the first adjusting mechanism 1, the two limiting rubber sleeves 4 are correspondingly and correspondingly arranged at the ends of the two second adjusting mechanisms 2 away from the first adjusting mechanism 1, the two telescopic protective sleeves 5 are correspondingly and correspondingly arranged at the ends of the two second adjusting mechanisms 2 away from each other, and are fitted onto the two limiting rubber sleeves 4, the first adjusting locking block 6 is movably arranged on the first adjusting mechanism 1, and the two second adjusting locking blocks 7 are correspondingly and movably arranged on the two second adjusting mechanisms 2.
[0035] The beneficial effects of this utility model are as follows: the first and second adjustment mechanisms are advantageous in changing the size of the traction bow through telescopic adjustment, thereby adapting to patients of different body types and different fracture sites; the first and second adjustment locking blocks are advantageous in canceling the locking state of the first and second adjustment mechanisms before adjustment, and locking and fixing the first and second adjustment mechanisms after adjustment; the universal traction mechanism is advantageous in applying traction force in conjunction with the suspension rope and weight after adjustment; the limiting rubber sleeve is advantageous in firmly wrapping and fixing the Kirschner wire, and the telescopic protective sleeve is placed on the end of the Kirschner wire to avoid injury to medical staff and patients from the sharp end of the Kirschner wire.
[0036] Preferred, such as Figure 3As shown, the first adjustment mechanism 1 includes a first outer adjustment sleeve 11 and a first inner adjustment rod 12. The first inner adjustment rod 12 is an arc-shaped rod structure, and the first outer adjustment sleeve 11 is an arc-shaped tubular structure adapted to be installed on the first inner adjustment rod 12. The two universal traction mechanisms 3 are installed one-to-one on the side walls of the first outer adjustment sleeve 11 and the first inner adjustment rod 12 at opposite ends. The first adjustment locking block 6 can move up and down through the first outer adjustment sleeve 11.
[0037] The advantages of adopting the above-mentioned preferred scheme are: the first outer adjustment sleeve is adapted to be installed on the first inner adjustment rod, which is conducive to realizing the change of the arc length of the entire first adjustment mechanism by extension and retraction, and thus realizing the change of the distance between the two second adjustment mechanisms, so as to adapt to patients of different body types and different fracture sites.
[0038] Preferred, such as Figure 3 As shown, a first adjusting rack 121 is provided on the side wall of the first inner adjusting rod 12 along the outline of the first inner adjusting rod 12.
[0039] The advantages of adopting the above preferred scheme are: the first adjusting rack and the first adjusting locking block are conducive to fixing after telescopic adjustment and canceling the fixing before telescopic adjustment.
[0040] Preferred, such as Figure 3 and Figure 5 As shown, the first adjusting locking block 6 includes: a first adjusting handle 61, a first connecting rod 62, and a plurality of first locking teeth 63; the plurality of first locking teeth 63 are arranged side by side and have a toothed structure adapted to the first adjusting rack 121; the first connecting rod 62 can move up and down through the side wall of the first outer adjusting sleeve 11, and its two ends are connected to the first adjusting handle 61 and the first locking teeth 63 respectively.
[0041] It should be noted that in the technical solution of this utility model, the side wall of the first outer adjusting sleeve 11 wraps around the side wall of the first connecting rod 62, so that after the first connecting rod 62 passes through the side wall of the first outer adjusting sleeve 11 and moves up and down to its position, the side wall of the first outer adjusting sleeve 11 can still tightly wrap around the side wall of the first connecting rod 62, so that the first connecting rod 62, which has moved up and down to its position, is fixed in the position after the displacement.
[0042] The advantages of adopting the above preferred solution are: the first adjusting handle is conducive to adjusting the vertical displacement of the first connecting rod and multiple first locking tooth blocks by pulling up and down, thereby enabling the first locking tooth blocks to engage or disengage with the toothed structure on the first adjusting rack. When engaged, it can restrict the extension and retraction adjustment of the first outer adjusting sleeve and the first inner adjusting rod, and when disengaged, it can continue to achieve extension and retraction adjustment.
[0043] Preferred, such as Figure 3 As shown, the universal traction mechanism 3 includes: a fixed base 31, a universal ball 32, and a traction hook 33; the fixed bases 31 of the two universal traction mechanisms 3 are installed one-to-one on the side walls of the first outer adjusting sleeve 11 and the first inner adjusting rod 12 at opposite ends; the universal ball 32 is rotatably adapted to be disposed in the fixed base 31 and connected to the traction hook 33.
[0044] The advantages of adopting the above-mentioned preferred solution are: the fixed seat is conducive to fixing the universal ball on the first outer adjusting sleeve and the first inner adjusting rod. After the first outer adjusting sleeve and the first inner adjusting rod are adjusted to the arc length, the universal ball rolls in the fixed seat, which is conducive to adjusting the position of the traction hook, and applies the required pulling force in conjunction with the external sling and weight.
[0045] Preferred, such as Figure 4 As shown, the second adjustment mechanism 2 includes a second outer adjustment sleeve 21 and a second inner adjustment rod 22; the second outer adjustment sleeve 21 is a tubular structure adapted to be installed on the second inner adjustment rod 22, and the second adjustment locking block 7 can move up and down through the second outer adjustment sleeve 21.
[0046] The advantages of adopting the above preferred solution are: the second outer adjustment sleeve is adapted to be installed on the second inner adjustment rod, which is conducive to adjusting the length of the second adjustment mechanism by extension and retraction to adapt to patients of different body types and different fracture sites.
[0047] Preferred, such as Figure 4 As shown, a second adjusting rack 221 is provided on the side wall of the second inner adjusting rod 22 along the length direction of the second inner adjusting rod 22.
[0048] The advantages of adopting the above preferred scheme are: the second adjusting rack and the second adjusting locking block are conducive to fixing after telescopic adjustment and canceling the fixing before telescopic adjustment.
[0049] Preferably, the second adjusting locking block 7 includes: a second adjusting handle 71, a second connecting rod 72, and a plurality of second locking teeth 73; the plurality of second locking teeth 73 are arranged side by side and have a toothed structure adapted to the second adjusting rack 221; the second connecting rod 72 can move up and down through the side wall of the second outer adjusting sleeve 21, and its two ends are connected to the second adjusting handle 71 and the second locking teeth 73 respectively.
[0050] It should be noted that the structure of the second adjusting locking block 7 is the same as that of the first locking block 63, except that the tooth shape of the second locking tooth block 73 is different from that of the second locking tooth block 73. Therefore, the structure of the second adjusting locking block 7 is not illustrated.
[0051] In the technical solution of this utility model, the side wall of the second outer adjusting sleeve 21 wraps around the side wall of the second connecting rod 72, so that after the second connecting rod 72 passes through the side wall of the second outer adjusting sleeve 21 and moves up and down to the position, the side wall of the second outer adjusting sleeve 21 can still tightly wrap around the side wall of the second connecting rod 72, so that the second connecting rod 72, which has moved up and down to the position, is fixed in the position after the displacement.
[0052] The advantages of adopting the above preferred solution are: the second adjusting handle is conducive to adjusting the vertical displacement of the second connecting rod and multiple second locking tooth blocks by pulling up and down, thereby enabling the second locking tooth blocks to engage or disengage with the toothed structure on the second adjusting rack. When engaged, it can restrict the extension and retraction adjustment of the second outer adjusting sleeve and the second inner adjusting rod. When disengaged, it can continue to achieve extension and retraction adjustment.
[0053] Preferred, such as Figure 1 and Figure 2 As shown, the limiting sleeve 4 is adapted to pass through the end of the second inner adjusting rod 22 away from the second outer adjusting sleeve 21. The limiting sleeve 4 is axially provided with a channel for the Kirschner wire to pass through, and the limiting sleeve 4 is wrapped around the side wall of the Kirschner wire.
[0054] The advantages of adopting the above preferred solution are: the limiting sleeve is axially provided with a channel for the Kirschner wire to pass through, and the limiting sleeve is wrapped around the side wall of the Kirschner wire, which is beneficial to use the limiting sleeve to tightly fix the Kirschner wire after the Kirschner wire passes through the limiting sleeve axially, and to prevent the Kirschner wire from shifting during the pulling process.
[0055] Preferred, such as Figure 1 and Figure 2 As shown, the telescopic protective sleeve 5 is telescopically fitted onto the end of the Kirschner wire that passes through the limiting rubber sleeve 4.
[0056] The beneficial effect of adopting the above-mentioned preferred solution is that the telescopic protective sleeve can cover the ends of Kirschner wires of different lengths by telescopically extending, thereby avoiding injury to medical staff and patients from the sharp ends of the Kirschner wires.
[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A traction bow, characterized in that, include: The system comprises a first adjustment mechanism (1), two second adjustment mechanisms (2), two universal traction mechanisms (3), two limiting rubber sleeves (4), two telescopic protective sleeves (5), a first adjustment locking block (6), and two second adjustment locking blocks (7). The first adjustment mechanism (1) is a retractable arc-shaped structure. Two second adjustment mechanisms (2) are retractably and telescopically arranged at both ends of the first adjustment mechanism (1) in a one-to-one correspondence. The two second adjustment mechanisms (2) are arranged in parallel. The universal traction mechanism (3) is installed on the first adjustment mechanism (1). Two limiting sleeves (4) are arranged at the ends of the two second adjustment mechanisms (2) away from the first adjustment mechanism (1) in a one-to-one correspondence. Two telescopic protective sleeves (5) are arranged at the ends of the two second adjustment mechanisms (2) away from each other in a one-to-one correspondence, and are fitted onto the two limiting sleeves (4) in a one-to-one correspondence. The first adjustment locking block (6) is movably arranged on the first adjustment mechanism (1). Two second adjustment locking blocks (7) are movably arranged on the two second adjustment mechanisms (2) in a one-to-one correspondence.
2. The traction bow according to claim 1, characterized in that, The first adjustment mechanism (1) includes a first outer adjustment sleeve (11) and a first inner adjustment rod (12). The first inner adjustment rod (12) is an arc-shaped rod structure, and the first outer adjustment sleeve (11) is an arc-shaped tubular structure adapted to be installed on the first inner adjustment rod (12). The two universal traction mechanisms (3) are installed one-to-one on the side walls of the first outer adjustment sleeve (11) and the first inner adjustment rod (12) at opposite ends. The first adjustment locking block (6) can move up and down through the first outer adjustment sleeve (11).
3. The traction bow according to claim 2, characterized in that, A first adjusting rack (121) is provided on the side wall of the first inner adjusting rod (12) along the outline of the first inner adjusting rod (12).
4. The traction bow according to claim 3, characterized in that, The first adjusting locking block (6) includes: a first adjusting handle (61), a first connecting rod (62) and a plurality of first locking teeth (63); the plurality of first locking teeth (63) are arranged side by side and have a toothed structure adapted to the first adjusting rack (121); the first connecting rod (62) can move up and down through the side wall of the first outer adjusting sleeve (11) and its two ends are connected to the first adjusting handle (61) and the first locking teeth (63) respectively.
5. A traction bow according to claim 2, characterized in that, The universal traction mechanism (3) includes: a fixed seat (31), a universal ball (32), and a traction hook (33); the fixed seats (31) of the two universal traction mechanisms (3) are installed one-to-one on the side walls of the first outer adjusting sleeve (11) and the first inner adjusting rod (12) at opposite ends of each other, and the universal ball (32) is rotatably adapted to be disposed in the fixed seat (31) and connected to the traction hook (33).
6. The traction bow according to claim 1, characterized in that, The second adjustment mechanism (2) includes a second outer adjustment sleeve (21) and a second inner adjustment rod (22); the second outer adjustment sleeve (21) is a tubular structure adapted to be installed on the second inner adjustment rod (22), and the second adjustment locking block (7) can move up and down through the second outer adjustment sleeve (21).
7. A traction bow according to claim 6, characterized in that, A second adjusting rack (221) is provided on the side wall of the second inner adjusting rod (22) along the length direction of the second inner adjusting rod (22).
8. A traction bow according to claim 7, characterized in that, The second adjusting locking block (7) includes: a second adjusting handle (71), a second connecting rod (72) and a plurality of second locking teeth (73); the plurality of second locking teeth (73) are arranged side by side and have a toothed structure that is adapted to the second adjusting rack (221); the second connecting rod (72) can move up and down through the side wall of the second outer adjusting sleeve (21) and its two ends are connected to the second adjusting handle (71) and the second locking teeth (73) respectively.
9. A traction bow according to claim 6, characterized in that, The limiting sleeve (4) is adapted to pass through the end of the second inner adjusting rod (22) away from the second outer adjusting sleeve (21). The limiting sleeve (4) is axially provided with a channel for the Kirschner needle to pass through. The limiting sleeve (4) wraps around the side wall of the Kirschner needle.
10. A traction bow according to claim 1, characterized in that, The telescopic protective sleeve (5) is telescopically fitted onto the end of the Kirschner wire that passes through the limiting rubber sleeve (4).