Spinal column traction device

Abstract

This utility model discloses a spinal traction device, relating to the technical field of medical devices. The spinal traction device includes a cephalopelvic ring, a hip semicircular structure, and a tensioning structure. The cephalopelvic ring includes a head ring portion, multiple connecting components, and multiple skull screws. The hip semicircular structure includes multiple transverse screws, two first connecting rods, two left hip semicircular rods, and two right hip semicircular rods. The tensioning structure includes multiple first tensioning rods, multiple tensioning knobs, and multiple second tensioning rods. In the spinal traction device, the head ring portion, connecting components, skull screws, second tensioning rods, tensioning knobs, first tensioning rods, left hip semicircular rods, right hip semicircular rods, first connecting rods, and transverse screws are sequentially combined and connected together, effectively improving the patient's quality of rest during chronic traction treatment.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically to a spinal traction device. Background Technology

[0002] When spinal curvature becomes severe, treatment can only be performed after the spine is gradually straightened by chronic traction under the guidance of a spinal traction device.

[0003] Spinal traction devices mainly include a cephalopelvic ring, a hip structure, and a tensioning structure. In related technologies, the hip structure is usually a ring shape, which affects the patient's sitting and lying postures and seriously affects the patient's quality of rest. Utility Model Content

[0004] The purpose of this invention is to provide a spinal traction device to solve the problem that the structure of existing spinal traction devices easily affects the quality of patients' rest.

[0005] Therefore, embodiments of this utility model propose a spinal traction device.

[0006] According to an embodiment of the present invention, a spinal traction device includes a cephalopelvic ring, a hip semicircular structure, and a tensioning structure. The cephalopelvic ring includes a head ring portion, multiple connecting components, and multiple skull nails. The head ring portion has multiple first mounting holes. Each connecting component includes a connecting portion and a first fixing nut. The upper end of the connecting portion has a first fixing stud, which passes through the first mounting hole. The first fixing nut is fitted onto the first fixing stud. The connecting portion has a second mounting hole. Each skull nail includes a bullet head, a drilling portion, and a fixing portion. The fixing portion passes through the second mounting hole and is fixed by a second fixing nut. The hip semicircular structure includes multiple transverse bone nails, two first connecting rods, two left hip semicircular rods, and two right hip semicircular rods. A portion of the transverse bone nails extend from the patient's left hip into the patient's hip bone, and another portion... A transverse bone screw extends from the patient's right hip into the patient's transverse bone. Two first connecting rods are respectively connected to the ends of the two portions of the transverse bone screw. Two left hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the patient's left side. Two right hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the patient's right side. Two left hip semicircular rods are connected to the ends of the two right hip semicircular rods. The tensioning structure includes multiple first tensioning rods, multiple tensioning knobs, and multiple second tensioning rods. The lower ends of the multiple first tensioning rods are connected to the left hip semicircular rods or the right hip semicircular rods. The upper ends of the first tensioning rods have threaded ends. The tensioning knobs are rotatably fitted onto the threaded ends of the first tensioning rods. The upper ends of the multiple second tensioning rods are connected to the head ring portion through a second connecting assembly. The lower ends of the second tensioning rods are connected to the top of the tensioning knobs.

[0007] In some embodiments, the connecting portion is further provided with a circular plate portion, the circular plate portion being adjacent to the lower end of the first fixing stud, and the circular plate portion and the first fixing nut being located on opposite sides of the head ring portion.

[0008] In some embodiments, the drilling part is provided with external threads and a plurality of scale lines, the spacing between adjacent scale lines being 5 mm.

[0009] In some embodiments, there are six transverse screws, with three of them extending from the patient's left hip into the patient's transverse bone, and three of them extending from the patient's right hip into the patient's transverse bone.

[0010] In some embodiments, the spinal traction device further includes two second connecting rods, which are arranged parallel to the two first connecting rods, and the two ends of the second connecting rods are respectively connected to the two left hip semicircular rods or the two right hip semicircular rods.

[0011] In some embodiments, the spinal traction device further includes a plurality of locking members, each locking member including a bolt and two locking portions passing through the bolt, the two locking portions being rotatable relative to each other; a portion of the locking members are disposed at the connection between the transverse bone screw and the first connecting rod, another portion of the locking members are disposed at the connection between the first connecting rod or the second connecting rod and the left hip semicircular rod or the right hip semicircular rod, yet another portion of the locking members are disposed at the connection between the left hip semicircular rod and the right hip semicircular rod, and yet another portion of the locking members are disposed at the connection between the left hip semicircular rod and the right hip semicircular rod and the first tensioning rod.

[0012] In some embodiments, the snap-fit ​​portion includes two sub-parts, the ends of the two sub-parts are integrally formed, the front ends of the two sub-parts are separately disposed, and the front ends of the sub-parts are provided with arc-shaped grooves opposite each other, the arc-shaped grooves being used for snap-fit; the snap-fit ​​portion is provided with a through mounting hole, the snap-fit ​​portion is sleeved on the bolt through the mounting hole, and the mounting hole is located at the separated position of the sub-parts.

[0013] In some embodiments, the transosseous nail sequentially includes a bullet head, a threaded portion, and a round rod portion, wherein the length of the threaded portion is less than or equal to the length of the round rod portion, and the length of the threaded portion is between 10cm and 15cm.

[0014] In some embodiments, the tensioning knob includes a body, the upper end of which is provided with a first through hole, and the lower end of which is provided with a second through hole. An annular ring is provided in the second through hole, and the annular ring has an internal thread. The lower end of the second tensioning rod is provided with an abutment portion. The second tensioning rod passes through the second through hole into the body and exits through the first through hole. The diameter of the abutment portion is larger than the diameter of the first through hole. The annular ring is fixedly connected to the body and is rotatably sleeved on the threaded end of the first tensioning rod.

[0015] In some embodiments, the second connecting assembly includes a threaded connecting rod, the top of the second tensioning rod is provided with an internal threaded hole, the lower end of the threaded connecting rod is threadedly connected to the top of the second tensioning rod, and the upper end of the threaded connecting rod passes through the first mounting hole and is fixed by a nut.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Other features and aspects of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a spinal traction device according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the head ring portion in the spinal traction device according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of a connecting component in a spinal traction device according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of a skull nail in a spinal traction device according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the hip semicircular structure in the spinal traction device according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of a snap-fit ​​component in a spinal traction device according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the tensioning structure in the spinal traction device according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of a tension knob in a spinal traction device according to an embodiment of the present invention.

[0026] Figure label:

[0027] A spinal traction device 100 includes a cephalopelvic ring 10, a head ring portion 11, a first mounting hole 111, a connecting assembly 12, a connecting portion 121, a first fixing nut 122, a first fixing stud 123, a second mounting hole 124, a circular plate portion 125, a skull nail 13, a second fixing nut 14, a hip semicircular structure 20, a cross bone nail 21, a first connecting rod 22, a left hip semicircular rod 23, a right hip semicircular rod 24, a second connecting rod 25, a tensioning structure 30, a first tensioning rod 31, a second tensioning rod 32, an abutment portion 321, a tensioning knob 33, a main body 331, an annular ring 332, a limiting nut 34, a snap-fit ​​component 40, a bolt 41, a snap-fit ​​portion 42, a sub-part 421, and an arc-shaped groove 422. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to specific implementation schemes. However, those skilled in the art should understand that the implementation schemes described below are only for illustrating this utility model and should not be regarded as limiting the scope of this utility model. Based on the implementation schemes in this utility model, all other implementation schemes obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] like Figures 1-8 As shown, the spinal traction device 100 according to an embodiment of the present invention includes a cephalopelvic ring 10, a hip semicircular structure 20, and a tensioning structure 30.

[0030] The cephalopelvic ring 10 includes a head ring portion 11, multiple connecting components 12, and multiple skull screws 13.

[0031] The head ring portion 11 has multiple first mounting holes 111. The connecting assembly 12 includes a connecting portion 121 and a first fixing nut 122. The upper end of the connecting portion 121 has a first fixing stud 123, which passes through the first mounting holes 111. The first fixing nut 122 is fitted onto the first fixing stud 123. The connecting portion 121 has a second mounting hole 124. The skull nail 13 includes a bullet head, a drilling portion, and a fixing portion. The fixing portion passes through the second mounting hole 124 and is fixed by a second fixing nut 14.

[0032] It is understood that in this utility model, the connecting part 121 is generally flat, and a second mounting hole 124 is provided on the front side of the connecting part 121. The fixing part of the skull nail 13 is installed in the second mounting hole 124. A first fixing stud 123 is provided on the top of the connecting part 121. The first fixing stud 123 passes through the first mounting hole 111, thereby realizing a stable connection between the head ring part 11, the connecting component 12 and the skull nail 13.

[0033] The hip semicircular structure 20 includes multiple hip bone nails 21, two first connecting rods 22, two left hip semicircular rods 23, and two right hip semicircular rods 24. A portion of the hip bone nails 21 extends from the patient's left hip into the patient's hip bone, and another portion extends from the patient's right hip into the patient's hip bone. The two first connecting rods 22 are respectively connected to the ends of the two portions of the hip bone nails 21. The two left hip semicircular rods 23 are respectively connected to the two ends of the first connecting rods 22 located on the patient's left side. The two right hip semicircular rods 24 are respectively connected to the two ends of the first connecting rods 22 located on the patient's right side. The two left hip semicircular rods 23 are connected to the ends of the two right hip semicircular rods 24.

[0034] Understandably, the transverse screw 21 is drilled into the patient's body from the abdomen, with its front end abutting against the patient's hip bone. The transverse screw 21 only drills in from the front of the patient and does not need to protrude from the back, thereby reducing the number of surgical holes and effectively reducing the risk of intraoperative and postoperative infection.

[0035] In this utility model, the left hip semicircular rod 23 and the right hip semicircular rod 24 have the same structure, and the left hip semicircular rod 23 and the right hip semicircular rod 24 are arranged opposite to each other.

[0036] Preferably, both the left hip semicircular rod 23 and the right hip semicircular rod 24 are continuous bent rods, which effectively reduces the outward expansion space of the left hip semicircular rod 23 and the right hip semicircular rod 24, and helps to prevent the patient from colliding with the left hip semicircular rod 23 and the right hip semicircular rod 24 when moving and resting.

[0037] The tensioning structure 30 includes a plurality of first tensioning rods 31, a plurality of tensioning knobs 33, and a plurality of second tensioning rods 32.

[0038] The lower ends of multiple first tensioning rods 31 are connected to the left hip semicircular rod 23 or the right hip semicircular rod 24. The upper end of the first tensioning rod 31 has a threaded end. The tensioning knob 33 is rotatably sleeved on the threaded end of the first tensioning rod 31. The upper ends of multiple second tensioning rods 32 are connected to the head ring 11. The lower ends of the second tensioning rods 32 are connected to the top of the tensioning knob 33.

[0039] In this invention, the top of the tension knob 30 is rotatably connected to the lower end of the second tension rod 32, meaning that rotating the tension knob 30 will not drive the second tension rod 32. The bottom of the tension knob 30 is threadedly connected to the threaded end of the first tension rod 31, meaning that rotating the tension knob 30 can cause the threaded end to move forward or backward. Thus, the overall length of the first tension rod 31 and the second tension rod 32 can be adjusted stably and quickly, thereby adjusting the traction force of the headband ring 10.

[0040] In some embodiments, such as Figures 2-3 As shown, a circular plate portion 125 is also provided on the connecting portion 121. The circular plate portion 125 is close to the lower end of the first fixing stud 123. The circular plate portion 125 and the first fixing nut 122 are located on both sides of the head ring portion 11.

[0041] Understandably, the design of the circular plate portion 125 effectively increases the contact area between the connecting portion 121 and the head ring portion 11, which is beneficial to improving the stability between the connecting portion 121 and the head ring portion 11.

[0042] In some embodiments, such as Figure 4 As shown, the drilling part is provided with external threads and multiple scale lines, with a spacing of 5mm between adjacent scale lines.

[0043] Understandably, the external threads on the drilled section help reduce the effort required to insert the skull screw 13 into the patient's head. The graduated markings also allow doctors to better observe the drilling depth of the skull screw 13.

[0044] In the utility model, the first mounting hole 111 is a circular hole, and an internal thread is provided in the first mounting hole 111, thereby improving the stability between the connecting part 121 and the head ring part 11.

[0045] In the utility model, the second mounting hole 124 is a circular hole, and an internal thread is provided in the second mounting hole 124, thereby improving the stability between the connecting part 121 and the skull nail 13.

[0046] In some embodiments, such as Figures 5-6 As shown, there are 6 transverse screws 21. Three transverse screws 21 extend from the patient's left hip into the patient's hip bone, and three transverse screws 21 extend from the patient's right hip into the patient's hip bone.

[0047] Understandably, setting the number of cross-bone nails 10 to 6 is beneficial to improving the stability of the hip semi-circular structure 20.

[0048] In some embodiments, such as Figures 5-6As shown, the spinal traction device 100 also includes two second connecting rods 25, which are arranged parallel to the two first connecting rods 22 respectively. The two ends of the second connecting rods 25 are connected to the two left hip semicircular rods 23 or the two right hip semicircular rods 24 respectively.

[0049] It is understandable that by setting the second connecting rod 25, which is connected to the semicircular rod mentioned above along with the first connecting rod 22, the stability of the hip semicircular structure 20 is further improved.

[0050] In some embodiments, such as Figures 5-6 As shown, the spinal traction device 100 also includes multiple locking components 40. Each locking component 40 includes a bolt 41 and two locking parts 42 passing through the bolt 41. The two locking parts 42 can rotate relative to each other. A portion of the locking components 40 is located at the connection between the cross bone screw 21 and the first connecting rod 22. Another portion of the locking components 40 is located at the connection between the first connecting rod 22 or the second connecting rod 25 and the left hip semicircular rod 23 or the right hip semicircular rod 24. Yet another portion of the locking components 40 is located at the connection between the left hip semicircular rod 23 and the right hip semicircular rod 24. Yet another portion of the locking components 40 is located at the connection between the left hip semicircular rod 23 and the right hip semicircular rod 24 and the first tensioning rod 31.

[0051] It is understandable that, since the cross-bone nails 13 in this utility model are not arranged in parallel, the design of the two locking parts 42 being able to rotate relative to each other allows the ends of multiple cross-bone nails 13 to be connected to a straight rod simultaneously.

[0052] In this utility model, a snap-fit ​​member 40 is provided on the lower end of the first tensioning rod 31. The two snap-fit ​​parts 42 on the snap-fit ​​member 40 are respectively snapped into the first tensioning rod 31 and the left hip semicircular rod 23 or the right hip semicircular rod 24, thereby achieving a stable connection.

[0053] In some embodiments, such as Figures 5-6 As shown, the snap-fit ​​part 42 includes two sub-parts 421. The ends of the two sub-parts 421 are integrally formed, and the front ends of the two sub-parts 421 are separately set. The front ends of the sub-parts 421 are provided with arc-shaped grooves 422 opposite to each other. The arc-shaped grooves 422 are used for snap-fit. The snap-fit ​​part 42 is provided with a through mounting hole. The snap-fit ​​part 42 is sleeved on the bolt 41 through the mounting hole, and the mounting hole is located at the position where the sub-parts 421 are separated.

[0054] Understandably, the ends of the two sub-parts 421 are integrally formed, thereby improving the structural strength and stability of the snap-fit ​​part 42.

[0055] The front ends of the two sub-parts 421 are separated, and the front ends of the sub-parts 421 are provided with arc-shaped grooves 422 opposite each other. The arc-shaped grooves 422 are used for snap-fit, thereby facilitating the snap-fit ​​of the sub-parts 421 onto the aforementioned components.

[0056] In some embodiments, the transosseous nail 21 includes a bullet head, a threaded portion, and a round rod portion in sequence. The length of the threaded portion is less than or equal to the length of the round rod portion, and the length of the threaded portion is between 10cm and 15cm.

[0057] In some embodiments, such as Figures 7-8 As shown, the tensioning knob 33 includes a main body 331, with a first through hole at the upper end and a second through hole at the lower end. An annular ring 332 is provided inside the second through hole, and the annular ring 332 has an internal thread. The lower end of the second tensioning rod 32 is provided with an abutment part 321. The second tensioning rod 32 passes through the second through hole into the main body 331 and exits through the first through hole. The diameter of the abutment part 321 is larger than the diameter of the first through hole. The annular ring 332 is fixedly connected to the main body 331 and is rotatably sleeved on the threaded end of the first tensioning rod 31.

[0058] It is understandable that the lower end of the second tensioning rod 32 is provided with an abutment part 321, and the abutment part 321 is located entirely within the body 331 of the tensioning knob 33. This effectively improves the stability between the second tensioning rod 32 and the tensioning knob 33. At the same time, there is no connection between the first through hole and the second tensioning rod 32, which helps to reduce the friction between the second tensioning rod 32 and the tensioning knob 33.

[0059] Furthermore, a threaded hole can be provided on the bottom side of the main body 331, and a bolt can be installed in the threaded hole to fix the annular ring 332, so that the annular ring 332 is stably set in the second through hole. At the same time, the annular ring 332 can be quickly replaced after wear, extending the service life of the tensioning knob 33.

[0060] In some embodiments, the spinal traction device 100 further includes a limiting nut 34, which is sleeved on the threaded end of the first tensioning rod 31.

[0061] Understandably, the limiting nut 34 helps prevent the tensioning structure 30 from being adjusted too quickly in one go, thus improving safety.

[0062] In some embodiments, the second connecting assembly (not shown) includes a threaded connecting rod, the top of the second tensioning rod 32 is provided with an internal threaded hole, the lower end of the threaded connecting rod is threadedly connected to the top of the second tensioning rod 32, and the upper end of the threaded connecting rod passes through the first mounting hole 111 and is fixed by a nut.

[0063] 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.

[0064] 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.

[0065] 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, an electrical connection, or a connection that allows communication between them; 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.

[0066] 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.

[0067] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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.

[0068] 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 spinal column traction device, comprising: include: A cephalopelvic ring, comprising a ring portion, multiple connecting components, and multiple skull screws; The head ring portion is provided with a plurality of first mounting holes. The connecting assembly includes a connecting portion and a first fixing nut. The upper end of the connecting portion is provided with a first fixing stud. The first fixing stud passes through the first mounting hole, and the first fixing nut is sleeved on the first fixing stud. The connecting portion is provided with a second mounting hole. The skull nail includes a bullet head, a drilling portion, and a fixing portion. The fixing portion passes through the second mounting hole and is fixed by a second fixing nut. The hip semicircular structure includes multiple cross bone nails, two first connecting rods, two left hip semicircular rods, and two right hip semicircular rods; One portion of the transverse bone nail extends from the patient's left hip into the patient's transverse bone, and another portion of the transverse bone nail extends from the patient's right hip into the patient's transverse bone. The two first connecting rods are respectively connected to the ends of the two portions of the transverse bone nails. The two left hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the patient's left side. The two right hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the patient's right side. The two left hip semicircular rods are connected to the ends of the two right hip semicircular rods. A tensioning structure, comprising a plurality of first tensioning rods, a plurality of tensioning knobs, and a plurality of second tensioning rods; The lower ends of the plurality of first tensioning rods are connected to the left hip semicircular rod or the right hip semicircular rod. The upper end of the first tensioning rod has a threaded end. The tensioning knob is rotatably sleeved on the threaded end of the first tensioning rod. The upper ends of the plurality of second tensioning rods are connected to the head ring portion through a second connecting assembly. The lower ends of the second tensioning rods are connected to the top of the tensioning knob.

2. The spinal traction device according to claim 1, characterized in that, The connecting part is also provided with a circular plate part, which is located near the lower end of the first fixing stud. The circular plate part and the first fixing nut are located on both sides of the head ring part.

3. The spinal traction device according to claim 2, characterized in that, The drilling part is provided with external threads and multiple scale lines, with a spacing of 5mm between adjacent scale lines.

4. The spinal traction device according to claim 1, characterized in that, There are 6 transverse screws, with 3 of them extending from the patient's left hip into the patient's transverse bone, and 3 of them extending from the patient's right hip into the patient's transverse bone.

5. The spinal column traction device of claim 4 wherein, Also includes: Two second connecting rods are arranged parallel to the two first connecting rods, and the two ends of the second connecting rods are respectively connected to the two left hip semicircular rods or the two right hip semicircular rods.

6. The spinal column traction device of claim 5 wherein, Also includes: Multiple snap-fit ​​components, each snap-fit ​​component including a bolt and two snap-fit ​​portions passing through the bolt, the two snap-fit ​​portions being rotatable relative to each other; A portion of the locking components are located at the connection between the cross bone nail and the first connecting rod; another portion of the locking components are located at the connection between the first connecting rod or the second connecting rod and the left hip semicircular rod or the right hip semicircular rod; yet another portion of the locking components are located at the connection between the left hip semicircular rod and the right hip semicircular rod; and yet another portion of the locking components are located at the connection between the left hip semicircular rod and the right hip semicircular rod and the first tensioning rod.

7. The spinal traction device according to claim 6, characterized in that, The snap-fit ​​part includes two sub-parts, the ends of the two sub-parts are integrally formed, the front ends of the two sub-parts are separately disposed, and the front ends of the sub-parts are provided with arc-shaped grooves opposite each other, the arc-shaped grooves are used for snap-fit; The snap-fit ​​part is provided with a through mounting hole, and the snap-fit ​​part is fitted onto the bolt through the mounting hole, and the mounting hole is located at the position where the sub-parts are separated.

8. The spinal traction device according to claim 7, characterized in that, The transosseous nail comprises a bullet head, a threaded portion, and a round rod portion, wherein the length of the threaded portion is less than or equal to the length of the round rod portion, and the length of the threaded portion is between 10cm and 15cm.

9. The spinal traction device according to claim 1, characterized in that, The tension knob includes a body, the upper end of which is provided with a first through hole, and the lower end of which is provided with a second through hole. An annular ring is provided in the second through hole, and the annular ring has an internal thread. The lower end of the second tensioning rod is provided with an abutment portion. The second tensioning rod passes through the second through hole into the main body and exits through the first through hole. The diameter of the abutment portion is larger than the diameter of the first through hole. The annular ring is fixedly connected to the main body, and the annular ring is rotatably fitted onto the threaded end of the first tensioning rod.

10. The spinal traction device according to claim 9, characterized in that, The second connecting assembly includes a threaded connecting rod, the top of the second tensioning rod is provided with an internal threaded hole, the lower end of the threaded connecting rod is threadedly connected to the top of the second tensioning rod, and the upper end of the threaded connecting rod passes through the first mounting hole and is fixed by a nut.

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