Spine traction device

Abstract

The invention discloses a spine traction device, and relates to the technical field of medical instruments. The spine traction device comprises a head pelvis ring, a crotch semicircular structure and a tensioning structure, the head pelvis ring comprises a head ring part, a plurality of connecting assemblies and a plurality of skull nails, and the crotch semicircular structure comprises a plurality of bone crossing nails, two first connecting rods, two left crotch semicircular rods and two right crotch semicircular rods. The tensioning structure comprises a plurality of first tensioning rods, a plurality of tensioning rotary knobs and a plurality of second tensioning rods. In the spine traction device, a head ring part, a connecting assembly, a skull nail, a second tensioning rod, a tensioning knob, a first tensioning rod, a left crotch semicircular rod, a right crotch semicircular rod, a first connecting rod and a bone-crossing nail are sequentially combined and connected together, and when chronic traction treatment is carried out on a patient, the rest quality of the patient is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a spinal traction device. Background Art

[0002] When the spinal curvature is severe, treatment can only be carried out after chronic traction is performed under the traction of a spinal traction device to gradually straighten the spine.

[0003] The spinal traction device mainly includes a head-pelvis ring, a hip structure and a tensioning structure. In the related technology, the hip structure is usually in a circular shape, which affects the patient's sitting and lying posture and seriously affects the patient's rest quality. Summary of the invention

[0004] The object of the present invention is to provide a spinal traction device to solve the problem that the structure of the existing spinal traction device easily affects the rest quality of the patient.

[0005] To this end, an embodiment of the present invention provides a spinal traction device.

[0006] A spinal traction device according to an embodiment of the present invention comprises a head-pelvis ring, a hip semicircular structure and a tensioning structure, the head-pelvis ring comprising a head ring portion, a plurality of connecting components and a plurality of skull nails; a plurality of first mounting holes are arranged on the head ring portion, the connecting component comprises a connecting portion and a first fixing nut, a first fixing stud is arranged on the upper end of the connecting portion, the first fixing stud is passed through the first mounting hole, the first fixing nut is sleeved on the first fixing stud, and a second mounting hole is arranged on the connecting portion; the skull nail comprises a bullet head, a drilling portion and a fixing portion, the fixing portion is passed through the second mounting hole and is fixed by a second fixing nut; the hip semicircular structure comprises a plurality of cross-bone nails, two first connecting rods, two left hip semicircular rods and two right hip semicircular rods; a part of the cross-bone nails extends from the left hip of the patient into the hip bone of the patient, and the other part The two parts of the cross-bone screw extend from the right hip part of the patient to the patient's hip bone, the two first connecting rods are respectively connected to the ends of the two parts of the cross-bone screws, the two left hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the left side of the patient, the two right hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the right side of the patient, and the two left hip semicircular rods are connected to the ends of the two right hip semicircular rods; the tightening structure includes a plurality of first tightening rods, a plurality of tightening knobs and a plurality of second tightening rods; the lower ends of the plurality of first tightening rods are connected to the left hip semicircular rod or the right hip semicircular rod, the upper end of the first tightening rod has a threaded end, the tightening knob is rotatably mounted on the threaded end of the first tightening rod, the upper ends of the plurality of second tightening rods are connected to the head ring, and the lower ends of the second tightening rods are connected to the top of the tightening knob.

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

[0008] In some embodiments, the drilling portion is provided with an external thread, and a plurality of scale lines are provided on the drilling portion, and the spacing between adjacent scale lines is 5 mm.

[0009] In some embodiments, there are six trans-bone screws, three of which extend from the left hip of the patient to the hip bone of the patient, and three of which extend from the right hip of the patient to the hip bone of the patient.

[0010] In some embodiments, the spinal traction device further comprises two second connecting rods, the two second connecting rods are respectively arranged in parallel with 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 also includes a plurality of clips, which include a bolt and two clips passed through the bolt, and the two clips can rotate relative to each other; a portion of the clips is arranged at the connection between the cross-bone screw and the first connecting rod, another portion of the clips is arranged 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, another portion of the clips is arranged at the connection between the left hip semicircular rod and the right hip semicircular rod, and another portion of the clips is arranged 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 clamping portion includes two sub-portions, the ends of the two sub-portions are integrally formed, the front ends of the two sub-portions are separately arranged, and the front ends of the sub-portions are relatively provided with arc grooves, and the arc grooves are used for clamping; a through mounting hole is provided on the clamping portion, and the clamping portion is sleeved on the bolt through the mounting hole, and the mounting hole is located at the position where the sub-portions are separated.

[0013] In some embodiments, the cross-bone screw 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 10 cm and 15 cm.

[0014] In some embodiments, the tightening knob includes a main body, a first through hole is provided at the upper end of the main body, a second through hole is provided at the lower end of the main body, an annular ring is provided in the second through hole, and the annular ring has an internal thread; an abutment portion is provided at the lower end of the second tightening rod, the second tightening rod passes into the main body from the second through hole and passes out from the first through hole, and 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 can be rotatably mounted on the threaded end of the first tightening rod.

[0015] In some embodiments, the spinal traction device further comprises a limiting nut, and the limiting nut is sleeved on the threaded end of the first tension rod.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, rather than limiting the present disclosure. Other features and aspects of the present disclosure will become more apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0020] Figure 3 Schematic diagram of a connecting assembly in a spinal traction device according to an embodiment of the present invention.

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

[0022] Figure 5 Schematic diagram of the semicircular structure of the hip part in the spinal traction device according to an embodiment of the present invention.

[0023] Figure 6 Schematic diagram of a clamping member in a spinal traction device according to an embodiment of the present invention.

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

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

[0026] Reference numerals:

[0027] Spinal traction device 100, cephalopelvic ring 10, cephalic ring portion 11, first mounting hole 111, connecting assembly 12, connecting portion 121, first fixing nut 122, first fixing stud 123, second mounting hole 124, circular plate portion 125, skull screw 13, second fixing nut 14, hip semi-circular structure 20, iliac screw 21, first connecting rod 22, left hip semi-circular rod 23, right hip semi-circular rod 24, second connecting rod 25, tensioning structure 30, first tensioning rod 31, second tensioning rod 32, abutting portion 321, tensioning knob 33, main body 331, annular ring 332, limiting nut 34, clamping member 40, bolt 41, clamping portion 42, sub-portion 421, arc-shaped groove 422. Detailed implementation manners

[0028] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with specific implementation manners. However, those skilled in the art should understand that the implementation manners described below are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

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

[0030] The cephalopelvic ring 10 includes a cephalic ring portion 11, a plurality of connecting assemblies 12, and a plurality of skull screws 13.

[0031] A plurality of first mounting holes 111 are provided on the cephalic ring portion 11. The connecting assembly 12 includes a connecting portion 121 and a first fixing nut 122. The upper end of the connecting portion 121 is provided with a first fixing stud 123. The first fixing stud 123 passes through the first mounting hole 111, and the first fixing nut 122 is sleeved on the first fixing stud 123. A second mounting hole 124 is provided on the connecting portion 121. The skull screw 13 includes a bullet head portion, a drilling portion, and a fixing portion. The fixing portion passes through the second mounting hole 124 and is fixed by the second fixing nut 14.

[0032] It can be understood that in the present invention, the connecting portion 121 is generally flat in shape, and a second mounting hole 124 is provided on the front side of the connecting portion 121, and the second mounting hole 124 is used to install the fixing portion of the skull nail 13, and a first fixing stud 123 is provided on the top of the connecting portion 121, and the first fixing stud 123 is passed through the first mounting hole 111, thereby achieving a stable connection between the head ring portion 11, the connecting assembly 12 and the skull nail 13.

[0033] The hip semicircular structure 20 includes a plurality of cross-bone screws 21, two first connecting rods 22, two left hip semicircular rods 23 and two right hip semicircular rods 24. A portion of the cross-bone screws 21 extends from the left hip of the patient to the hip bone of the patient, and another portion of the cross-bone screws 21 extends from the right hip of the patient to the hip bone of the patient, the two first connecting rods 22 are respectively connected to the ends of the two portions of the cross-bone screws 21, the two left hip semicircular rods 23 are respectively connected to the two ends of the first connecting rod 22 located on the left side of the patient, the two right hip semicircular rods 24 are respectively connected to the two ends of the first connecting rod 22 located on the right side of the patient, and the two left hip semicircular rods 23 are connected to the ends of the two right hip semicircular rods 24.

[0034] It can be understood that the cross-bone nail 21 is drilled into the patient's body from the patient's belly, and the front end of the cross-bone nail 21 abuts against the patient's hip bone. The cross-bone nail 21 is only drilled from the front of the patient and does not need to extend from the back of the patient. Therefore, the number of surgical holes is reduced, and the risk of intraoperative and postoperative infection is effectively reduced.

[0035] In the present invention, 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, the left hip semicircular rod 23 and the right hip semicircular rod 24 are both continuous bent rods, thereby effectively reducing the outward expansion space of the left hip semicircular rod 23 and the right hip semicircular rod 24, which is beneficial to prevent the patient from colliding with the left hip semicircular rod 23 and the right hip semicircular rod 24 when moving or 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, and the tensioning knob 33 is rotatably mounted 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 part 11, and the lower ends of the second tensioning rods 32 are connected to the top of the tensioning knob 33.

[0039] In the present invention, the top of the tension knob 30 is rotatably connected to the lower end of the second tension rod 32, that is, 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 on the first tension rod 31, that is, rotating the tension knob 30 can make the threaded end move forward or backward, thereby stably and quickly adjusting the overall length of the first tension rod 31 and the second tension rod 32, and then adjusting the traction force of the head basin ring 10.

[0040] In some embodiments, Figure 2-Figure 3 As shown, a circular plate portion 125 is further provided on the connecting portion 121 . The circular plate portion 125 is adjacent 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] It can be understood that 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, Figure 4 As shown, the drilling part is provided with an external thread, and a plurality of scale lines are provided on the drilling part, and the spacing between adjacent scale lines is 5 mm.

[0043] It is understandable that the drilling portion is provided with an external thread, which is conducive to reducing the insertion of the skull screw 13 into the patient's head with less effort. By setting the scale line, it is conducive to the doctor to observe the drilling depth of the skull screw 13 better.

[0044] In the present invention, the first mounting hole 111 is a circular hole, and an internal thread is arranged in the first mounting hole 111 , thereby improving the stability between the connecting portion 121 and the head ring portion 11 .

[0045] In the present invention, the second mounting hole 124 is a circular hole, and an internal thread is arranged in the second mounting hole 124 , thereby improving the stability between the connecting portion 121 and the skull nail 13 .

[0046] In some embodiments, Figure 5-Figure 6 As shown, there are six cross-bone screws 21, three of which extend from the left hip of the patient to the hip bone of the patient, and three of which extend from the right hip of the patient to the hip bone of the patient.

[0047] It is understandable that the number of cross-bone screws 10 is set to 6, which is beneficial to improving the stability of the hip semicircular structure 20.

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

[0049] It can be understood that, by providing the second connecting rod 25, the second connecting rod 25 and the first connecting rod 22 are simultaneously connected to the above-mentioned semicircular rod, thereby further improving the stability of the crotch semicircular structure 20.

[0050] In some embodiments, Figure 5-Figure 6 As shown, the spinal traction device 100 also includes a plurality of clips 40, the clips 40 include a bolt 41 and two clips 42 passed through the bolt 41, and the two clips 42 can rotate relative to each other; a portion of the clips 40 is arranged at the connection between the cross-bone screw 21 and the first connecting rod 22, another portion of the clips 40 is arranged 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, another portion of the clips 40 is arranged at the connection between the left hip semicircular rod 23 and the right hip semicircular rod 24, and another portion of the clips 40 is arranged 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, because the cross-bone screws 13 in the present invention are not arranged in parallel, the design that the two clamping parts 42 can rotate relatively can connect the ends of multiple cross-bone screws 13 to a straight rod at the same time.

[0052] In the present invention, a clamping member 40 is provided on the lower end of the first tensioning rod 31, and two clamping parts 42 on the clamping member 40 are respectively clamped to 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, Figure 5-Figure 6 As shown, the clamping portion 42 includes two sub-portions 421, the ends of the two sub-portions 421 are integrally formed, the front ends of the two sub-portions 421 are separately arranged, and the front ends of the sub-portions 421 are relatively provided with arc grooves 422, which are used for clamping; a through mounting hole is provided on the clamping portion 42, and the clamping portion 42 is sleeved on the bolt 41 through the mounting hole, and the mounting hole is located at the position where the sub-portions 421 are separated.

[0054] It can be understood that the ends of the two sub-portions 421 are integrally formed, thereby improving the structural strength and stability of the clamping portion 42 .

[0055] The front ends of the two sub-parts 421 are separately arranged, and arc grooves 422 are arranged opposite to each other at the front ends of the sub-parts 421. The arc grooves 422 are used for snap connection, thereby facilitating the snap connection of the sub-parts 421 to the above-mentioned components.

[0056] In some embodiments, the cross-bone screw 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 10 cm and 15 cm.

[0057] In some embodiments, Figure 7-Figure 8 As shown, the tightening knob 33 includes a main body 331, a first through hole is provided at the upper end of the main body 331, a second through hole is provided at the lower end of the main body 331, an annular ring 332 is provided in the second through hole, and an internal thread is provided in the annular ring 332; an abutment portion 321 is provided at the lower end of the second tightening rod 32, the second tightening rod 32 passes through the main body 331 from the second through hole and passes out from the first through hole, and the diameter of the abutment portion 321 is larger than the diameter of the first through hole; the annular ring 332 is fixedly connected to the main body 331, and the annular ring 332 is rotatably sleeved on the threaded end of the first tightening rod 31.

[0058] It can be understood that the lower end of the second tensioning rod 32 is provided with an abutment portion 321, and the abutment portion 321 is located as a whole in the main body 331 of the tensioning knob 33, thereby effectively improving the stability relationship between the second tensioning rod 32 and the tensioning knob 33. At the same time, there is no connection relationship between the first through hole and the second tensioning rod 32, which is conducive to reducing the friction between the second tensioning rod 32 and the tensioning knob 33.

[0059] Furthermore, a threaded hole may be provided on the bottom side of the main body 331, and a bolt may be installed in the threaded hole, and the bolt is used to fix the annular ring 332, so that the annular ring 332 is stably arranged in the second through hole. At the same time, the annular ring 332 can be quickly replaced after being worn, thereby extending the service life of the tightening 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 tension rod 31 .

[0061] It can be understood that the limiting nut 34 helps to prevent the tensioning structure 30 from being adjusted quickly all at once, thereby improving safety.

[0062] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A spinal traction device, characterized in that: include: A head-pelvis ring, comprising a head ring portion, a plurality of connecting components and a plurality of skull pins; The head ring 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 is inserted into the first mounting hole, the first fixing nut is sleeved on the first fixing stud, and 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 is inserted into the second mounting hole and is fixed by a second fixing nut; A crotch semicircular structure, comprising a plurality of cross-bone screws, two first connecting rods, two left crotch semicircular rods and two right crotch semicircular rods; A part of the cross-bone screws extends from the left hip part of the patient into the hip bone of the patient, and another part of the cross-bone screws extends from the right hip part of the patient into the hip bone of the patient, two of the first connecting rods are respectively connected to the ends of the two parts of the cross-bone screws, two of the left hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the left side of the patient, two of the right hip semicircular rods are respectively connected to the two ends of the first connecting rod located on the right side of the patient, and two of the left hip semicircular rods are connected to the ends of the two right hip semicircular rods; A tensioning structure, the 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 multiple 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, and the tensioning knob is rotatably mounted on the threaded end of the first tensioning rod, the upper ends of the multiple second tensioning rods are connected to the head ring part, and 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 portion is further provided with a circular plate portion, the circular plate portion is adjacent to the lower end of the first fixing stud, and the circular plate portion and the first fixing nut are located on both sides of the head ring portion.

3. The spinal traction device according to claim 2, characterized in that: The drilling part is provided with an external thread, and a plurality of scale lines are provided on the drilling part, and the spacing between adjacent scale lines is 5 mm.

4. The spinal traction device according to claim 1, characterized in that: There are six trans-bone screws, three of which extend from the left hip of the patient to the hip bone of the patient, and three of which extend from the right hip of the patient to the hip bone of the patient.

5. The spinal traction device according to claim 4, characterized in that: Also includes: Two second connecting rods, the two second connecting rods are respectively arranged in parallel with 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 traction device according to claim 5, characterized in that: Also includes: A plurality of clamping parts, each of which comprises a bolt and two clamping parts which are inserted through the bolt, and the two clamping parts can rotate relative to each other; A portion of the clips are arranged at the connection between the cross-bone screw and the first connecting rod, another portion of the clips are arranged 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, another portion of the clips are arranged at the connection between the left hip semicircular rod and the right hip semicircular rod, and another portion of the clips are arranged 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 clamping 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 arranged, and the front ends of the sub-parts are relatively provided with arc grooves, and the arc grooves are used for clamping; The clamping part is provided with a through mounting hole, the clamping part is sleeved on 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 cross-bone screw comprises 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 10 cm and 15 cm.

9. The spinal traction device according to claim 1, characterized in that: The tightening knob comprises a main body, the upper end of the main body is provided with a first through hole, the lower end of the main body 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 tension rod is provided with an abutment portion, the second tension rod passes through the second through hole into the main body and passes through the first through hole, and the diameter of the abutment portion is greater than the diameter of the first through hole; The annular ring is fixedly connected to the main body, and the annular ring is rotatably sleeved on the threaded end of the first tension rod.

10. The spinal traction device according to claim 9, characterized in that: Also includes: A limiting nut is sleeved on the threaded end of the first tensioning rod.

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