Thoracolumbar vertebra positioning scale, preoperative positioning device for spinal operation and application

Abstract

The invention provides a thoracolumbar vertebra positioning scale, a spinal preoperative positioning device and application, the thoracolumbar vertebra positioning scale comprises a stretchable structure formed by connecting a plurality of connecting rods through hinge pieces, the adjacent connecting rods can be in mutual running fit, and a plurality of rhombic frame structures are formed after stretching; the area of a rhombic airspace formed by the rhombic frame structure is gradually increased, and numbers are marked at hinge pieces. The preoperative positioning equipment for the spinal operation comprises the thoracolumbar vertebra positioning scale. The thoracolumbar vertebra positioning scale can be used for determining an operation segment without depending on a hand touch mode, so that the operation time is shortened, the problems of wrong number, multiple times of transmission and the like can be avoided, and preoperative positioning can be effectively assisted when a spinal operation is carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical auxiliary positioning, in particular to a thoracic and lumbar vertebra positioning ruler and its application in preoperative positioning of spinal surgery. Background Art

[0002] Spinal surgery routinely requires preoperative positioning to determine the surgical segment. How to quickly locate the surgical segment has also become an effective method to shorten the operation time. Generally, the surgeon follows the bony landmarks on the body surface, touches the spinous process, counts the corresponding segments, and then places a positioning metal object to take an X-ray. After determining the segment, mark it.

[0003] The current preoperative positioning method makes it difficult to accurately touch the spinous process in patients with thick subcutaneous fat or who need to locate the thoracic spine. The surgeon can only estimate the distance between each segment based on the surgeon's feel. The positioning error increases towards the head end of the segment. Therefore, if the preoperative surface positioning is inaccurate, it will not only increase the operation time, but also increase the number of fluoroscopy times. Summary of the Invention

[0004] In order to solve the current problem of preoperative spinal positioning, the purpose of the present invention is to provide a thoracolumbar positioning ruler that can assist in preoperative spinal positioning. Through the flexible adjustment method of the thoracolumbar positioning ruler, it can assist surgery to shorten the operation time and reduce errors.

[0005] The thoracic and lumbar vertebra positioning scale of the present invention provides the following technical solutions:

[0006] A thoracolumbar vertebra positioning ruler comprises a long connecting rod and a short connecting rod, wherein the long connecting rod and the short connecting rod are assembled together through a hinge to form a stretchable structure, numbers are marked on the hinge, and the hinge is provided with a storage platform.

[0007] Preferably, the long connecting rod and the short connecting rod are assembled together through hinges to form an eight-section tensile structure.

[0008] Furthermore, the long connecting rod includes a long solid connecting rod and a long hollow connecting rod, and the short connecting rod includes a short solid connecting rod and a short hollow connecting rod.

[0009] Preferably, an adjustment component is provided on the right side of the long solid connecting rod, and the adjustment component is used to adjust the length to adapt to different thoracic and lumbar vertebrae lengths. A quick-release component is provided on the inner side of the adjustment component, and the quick-release component is used for rapid disassembly and replacement;

[0010] The adjustment assembly includes a splicing sleeve, which is located at both ends and the middle of the right side of the long solid connecting rod. A long hollow connecting rod is provided on the right side of the long solid connecting rod, and two sets of hollow grooves are opened on the inner side of the long hollow connecting rod;

[0011] The quick-release assembly includes a fixed column, a telescopic cone is provided on the left side of the fixed column, the telescopic cone is located inside the splicing sleeve, and an extrusion block is provided on the inside of the splicing sleeve, the extrusion block is located on the left side of the telescopic cone.

[0012] Preferably, short solid connecting rods are provided at the upper and lower ends of the long solid connecting rod, an adjustment slot is provided on the inner side of the splicing sleeve, and the adjustment slot is located on the outer side of the extrusion block, and a push plate is installed on the left side of the extrusion block, and the push plate is located on the inner side of the adjustment slot.

[0013] Preferably, combination sleeves are installed at both ends and the right side of the middle of the long hollow connecting rod, and a combination groove is opened on the inner side of the combination sleeve, and the combination groove is located on the outside of the splicing sleeve. Several groups of protrusions are installed on the right side of the three groups of long hollow connecting rods in the middle. Short hollow connecting rods are provided at the upper and lower ends of the long hollow connecting rods, and the short hollow connecting rods and the short solid connecting rods are movably connected.

[0014] Preferably, four groups of positioning blocks are installed on the right side of the fixing column, and a fixing screw is installed in the middle of the right side of the fixing column.

[0015] Preferably, an expansion joint is provided on the inner side of the telescopic cone, and a threaded sleeve is provided on the outer side of the fixed screw.

[0016] Preferably, a rotating disk is installed on the right side of the threaded sleeve, and a cross slot is opened on the right side of the rotating disk.

[0017] Preferably, a limiting plate is provided on the outer side of the threaded sleeve, and the limiting plate is located on the inner side of the combined groove. A slot is provided on the inner side of the limiting plate, and the slot is located on the outer side of the threaded sleeve.

[0018] The present invention also provides another thoracic and lumbar positioning scale, which includes a stretchable structure formed by multiple connecting rods connected by hinges. Adjacent connecting rods can rotate and cooperate with each other, and after stretching, multiple diamond-shaped frame structures can be formed. The area of the diamond-shaped airspace formed by the diamond-shaped frame structure gradually increases.

[0019] Furthermore, the lengths of the four connecting rods in each diamond-shaped frame structure are the same, but different from the lengths of the four connecting rods in the adjacent diamond-shaped frame structure.

[0020] Preferably, the area of the diamond-shaped airspace at the head end of the thoracic and lumbar vertebra positioning scale is the smallest, and gradually increases toward the waist end.

[0021] Furthermore, the thoracic and lumbar vertebra positioning scale includes an eight-segment diamond frame structure with gradually increasing diamond airspace areas.

[0022] The present invention also provides a preoperative positioning device for spinal surgery.

[0023] The present invention also provides the use of the thoracic and lumbar positioning ruler in preparing a preoperative positioning device for spinal surgery.

[0024] The spinal column pre-operative positioning device and application include the thoracic and lumbar positioning ruler of the present invention.

[0025] Furthermore, the spinal surgery preoperative positioning device also includes a positioning metal object for radiographic imaging, and the positioning metal object is stored separately in a casing.

[0026] Preferably, the positioning metal object may include various shapes, such as cylindrical, beaded, etc.

[0027] The thoracic and lumbar vertebra positioning scale can be made of a material such as plastic that will not affect fluoroscopic radiography and is a soft material that can fit closely to the spine.

[0028] The thoracic and lumbar positioning ruler of the present invention assists in preoperative positioning and can achieve the following effects:

[0029] 1. Since the C7 spinous process and L4 spinous process of the human body are relatively easy to locate by manual touch, after determining these two positions, just place the two ends of the thoracolumbar positioning ruler on the C7 vertebra and L4 vertebra respectively. After the positioning ruler is stretched, each of its central hinges will automatically be located at each thoracic and lumbar vertebra, eliminating the need to count the vertebral positions one by one by manual touch and counting before the operation. This not only shortens the operation time, but also avoids problems such as human counting errors and multiple fluoroscopy.

[0030] 2. The thoracic and lumbar positioning ruler is equipped with an adjustment component. The ruler structure can be assembled by combining a long solid connecting rod and a long hollow connecting rod. The folding effect can be achieved through the rotatable structure of the splicing sleeve and the combination sleeve. The intervals at both ends of the overall structure can be adjusted by folding, and the overall structure is composed of multiple sections of telescopic rulers in proportion.

[0031] 3. The thoracic and lumbar positioning scale is equipped with a quick-release assembly and an adjustment assembly. The telescopic cone can be inserted into the inner side of the splicing sleeve. The expansion joint will be squeezed during the insertion process. After continuous insertion, the telescopic cone will be reset and stuck on the inside to prevent it from falling off. Then, the push plate can be controlled to squeeze the extrusion block on the right side to push the telescopic cone to retract and push out for quick disassembly and installation. The fixed screw can be separated from the limit plate by rotating the threaded sleeve. The damaged parts of the thoracic and lumbar positioning scale can be flexibly disassembled and replaced through the quick-release assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the thoracic and lumbar positioning ruler after stretching.

[0033] Figure 2 It is a schematic diagram of the long solid connecting rod structure in the thoracic and lumbar positioning scale structure.

[0034] Figure 3 It is a schematic cross-sectional view of the extrusion block in the thoracic and lumbar positioning scale structure.

[0035] Figure 4 It is a schematic diagram of the long hollow connecting rod structure in the thoracic and lumbar positioning scale structure.

[0036] Figure 5 It is a schematic diagram of the telescopic cone structure in the thoracic and lumbar positioning scale structure.

[0037] Figure 6 yes Figure 1 The diagram shows the structure of the thoracolumbar positioning scale after contraction, and displays the numbers corresponding to the thoracolumbar vertebrae marked in the central hinge.

[0038] Figure 7 This is a structural diagram of another thoracic vertebra positioning scale, with the width of each section gradually increasing.

[0039] Figure 8 yes Figure 7 The diagram shows the structure of the thoracic and lumbar positioning scale after contraction.

[0040] Figure 9 It will Figure 7 The diagram below shows the relationship between the thoracic and lumbar vertebral bodies and the thoracic and lumbar vertebrae after the thoracic and lumbar vertebrae are placed on the patient. To more clearly illustrate the relationship between the two, this diagram shows the thoracic and lumbar vertebral body in an upright position. In actual use, the thoracic and lumbar vertebral body is placed flat on the patient's back.

[0041] Figure 10 During preoperative positioning of spinal surgery, Figure 7 Shown is a top view of the thoracic and lumbar positioning ruler placed on the patient.

[0042] Among them: 1. Long solid connecting rod; 101. Splicing sleeve; 102. Adjusting slide; 103. Push plate; 104. Extrusion block; 105. Short solid connecting rod; 106. Short hollow connecting rod; 100. Connecting rod; 2. Long hollow connecting rod; 201. Combination sleeve; 202. Combination slot; 203. Hollow slot; 204. Bump; 3. Telescopic cone; 301. Fixed column; 302. Expansion joint; 303. Fixed Position block; 304, fixing screw; 4, limiting plate; 401, slot; 402, threaded sleeve; 403, rotating disk; 404, cross slot; 5, hinge; 51, center hinge; 52, side hinge; 53, storage platform; 6, diamond area; 61, diamond space at the head end; 68, diamond space at the waist end; 7, fluoroscopic positioning metal object; 8, operating table; 9, patient; 10, thoracic and lumbar positioning ruler. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Figures 1 to 8 The thoracic and lumbar positioning scale 10 shown includes a long solid connecting rod 1, a long hollow connecting rod 2, a short solid connecting rod 105 and a short hollow connecting rod 106, which are combined together by a hinge 5 to form a stretchable structure.

[0045] An adjustment component is provided on the long solid connecting rod 1, and the length of the adjustment component can be adjusted to adapt to thoracic and lumbar vertebrae of different lengths. A quick-release component is provided on the inner side of the adjustment component, and the quick-release component is used for rapid disassembly and replacement.

[0046] The adjustment assembly includes a splicing sleeve 101 , which is located on one side of the long solid connecting rod 1 and at both ends and the middle of the long solid connecting rod 1 .

[0047] The quick-release assembly includes a fixed column 301, a telescopic cone 3 is provided at the front end of the fixed column 301, the telescopic cone 3 is located on the inner side of the splicing sleeve 101, and an extrusion block 104 is provided on the inner side of the splicing sleeve 101. The extrusion block 104 is located on the left side of the telescopic cone 3, and the telescopic cone 3 can be inserted into the extrusion block 104.

[0048] The long solid connecting rod 1 is connected to the long hollow connecting rod 2 via a hinge. Two groups of hollow grooves 203 are formed on the inner side of the long hollow connecting rod 2 .

[0049] The long solid connecting rod 1 and the long hollow connecting rod 2 can be combined to form a ruler structure, and the scale can be folded and retracted by the rotatable structure of the splicing sleeve 101 and the combination sleeve 201. The intervals at both ends of the overall structure of the positioning ruler are adjusted by folding, and the whole structure is proportionally composed of a multi-section telescopic ruler.

[0050] By providing a telescopic cone 3, it can be inserted into the inner side of the splicing sleeve 101. During the insertion process, the expansion joint 302 will be squeezed. After continuous insertion, the telescopic cone 3 will be reset and stuck inside to prevent it from falling off. Then, the pushing plate 103 is controlled to squeeze the squeezing block 104 on the right side to push the telescopic cone 3 to retract and push out to achieve quick disassembly and installation. Then, the fixing screw 304 can be separated from the limit plate 4 by rotating the threaded sleeve 402. The damaged parts can be flexibly disassembled and replaced through the quick-release assembly.

[0051] Short solid connecting rods 105 are provided at both ends of the positioning scale 10. The same short solid connecting rods are provided with an adjustment component. The adjustment component includes a splicing sleeve. An adjustment slide groove 102 is opened on the inner side of the splicing sleeve 101. The adjustment slide groove 102 is located on the outside of the extrusion block 104. A push plate 103 is installed on the left side of the extrusion block 104. The push plate 103 is located on the inner side of the adjustment slide groove 102.

[0052] The short solid connecting rod 105 is used for combined connection, and the adjusting slide groove 102 can limit the inner pushing disk 103. During the movement of the pushing disk 103, the squeezing block 104 will be controlled to push the telescopic cone 3 to concentrate and shrink toward the middle.

[0053] Combination sleeves 201 are installed at both ends and the right side of the middle of the long hollow connecting rod 2, and a combination groove 202 is opened on the inner side of the combination sleeve 201. The combination groove 202 is located on the outside of the splicing sleeve 101. Several groups of protrusions 204 are installed on the right side of the three groups of long hollow connecting rods 2 in the middle.

[0054] Short hollow connecting rods 106 are provided at both ends of the positioning scale, and the short hollow connecting rod 106 and the short solid connecting rod 105 are movably connected.

[0055] The combination sleeve 201 can be combined and spliced with the splicing sleeve 101 , the combination groove 202 can provide an installation position for the positioning limit plate 4 , and the short hollow connecting rod 106 is used to be connected and combined with the short solid connecting rod 105 .

[0056] Four sets of positioning blocks 303 are installed on the right side of the fixing column 301 , and a fixing screw 304 is installed in the middle of the right side of the fixing column 301 .

[0057] The positioning block 303 can contact the left side of the limiting plate 4, and can be limited after being combined. The fixing screw 304 can be combined with the threaded sleeve 402 for splicing.

[0058] An expansion joint 302 is provided on the inner side of the telescopic cone 3 , and a threaded sleeve 402 is provided on the outer side of the fixing screw 304 .

[0059] The expansion joint 302 can be squeezed to shrink, and the threaded sleeve 402 can be rotated to be assembled with the fixed screw 304 for installation.

[0060] A rotating disk 403 is installed on the right side of the threaded sleeve 402 , and a cross slot 404 is formed on the right side of the rotating disk 403 .

[0061] The rotating disk 403 can drive the threaded sleeve 402 to connect and install with the fixed screw 304 by rotating, and the cross groove 404 can provide an adjustment port for the tool.

[0062] A limit plate 4 is provided on the outside of the threaded sleeve 402 , and the limit plate 4 is located on the inside of the combination groove 202 . A slot 401 is provided on the inside of the limit plate 4 , and the slot 401 is located on the outside of the threaded sleeve 402 .

[0063] The limiting plate 4 can be pushed to control the telescopic cone 3 to be inserted into the inner side of the splicing sleeve 101, and the slot 401 can provide an installation position for the threaded sleeve 402.

[0064] When in use, first insert the fixing screw 304 into the slot 401 and keep the positioning block 303 close to the limit plate 4, then use the tool to fix the threaded sleeve 402 and the fixing screw 304, and after connection, the combination sleeve 201 is correspondingly combined on the outside of the splicing sleeve 101, and the telescopic cone 3 is squeezed into the inside of the splicing sleeve 101 by extrusion for splicing, and then the two ends are pulled to control the length of the overall structure, and then the metal column is set on the inside of the combination slot 202 to assist in development as needed, and finally auxiliary positioning is performed on the thoracic and lumbar vertebrae.

[0065] The solid and hollow connecting rods cooperate with each other through the splicing sleeve 101 and the combination sleeve 201 to form a hinge 5. The hinge located in the center of the positioning scale is the central hinge 51, and the hinges located on both sides of the positioning scale are side hinges 52. The rotatable structure of the hinge allows the positioning scale to be stretched and folded. A storage platform 53 is provided on the hinge 5 for placing transmissive positioning components.

[0066] The thoracic and lumbar positioning ruler includes multiple groups of long connecting rods and short connecting rods, and the connecting rods connected by hinge points form multiple groups of deformable parallelogram frames, such as diamond frames, square frames, etc. (square frames can also be considered as a type of diamond frame), so that the spacing of the thoracic and lumbar positioning rulers can be freely adjusted as needed. As the positioning ruler is stretched, diamond-shaped airspaces 6 will be formed between the connecting rods of the positioning ruler. The structural area forming each diamond-shaped airspace is also called a section. Figures 6 to 8As shown, the corresponding thoracic and lumbar vertebral positions are marked on the hinges 5 at positions that are easily observed. For example, one of the hinges at the outermost end (also known as the head end, which is placed close to the human head during preoperative positioning) is marked with ⑦, indicating that the hinge corresponds to the cervical 7 vertebra position of the spine. The adjacent hinge is marked with ②, indicating that the hinge corresponds to thoracic 2. The hinges that follow represent thoracic 4, thoracic 6, thoracic 8, thoracic 10, and thoracic 12, respectively, until the center hinge appears again with ②. Here, ② indicates that the hinge corresponds to lumbar 2. The center hinge at the other outermost end (also known as the waist end, which is placed close to the human waist during preoperative positioning) is marked with ④, indicating that the hinge corresponds to lumbar 4. Metal objects 7 for positioning can be placed on the hinges. After the positioning scale is stretched, a diamond-shaped space 6 is formed. The center of the frontmost (head) diamond-shaped space corresponds to T1, followed by T3, T5, T7, T9, T11, L1, and L3. During preoperative positioning, a metal object 7 can be placed in the diamond-shaped space 6 after the positioning scale is stretched.

[0067] The thoracic and lumbar positioning scale can be made of solid, hollow, or a combination of the long or short connecting rods, and the lengths of the connecting rods can be set as needed and can be the same or different.

[0068] like Figure 1 The thoracic and lumbar positioning scale shown is composed of a plurality of long connecting rods and short connecting rods connected by hinged parts formed by splicing sleeves and combined sleeves. After stretching, a plurality of diamond frame structures are formed. The size of each group of diamond frame structures is the same, and the length of the four sides constituting each group of diamond frames is the same, that is, after the positioning scale is stretched, the area of the diamond airspace 6 is the same.

[0069] Figure 7 The thoracic and lumbar positioning scale shown is the same as Figure 1 The structure of the thoracic and lumbar positioning scale shown is basically the same, which is composed of multiple connecting rods 100 connected by a hinge 5 formed by a splicing sleeve and a combination sleeve. The adjacent connecting rods can rotate and cooperate with each other to form multiple diamond frame structures after stretching. Figure 7 The diamond frame structure of the positioning scale shown is gradually enlarged. The connecting rods on the four sides of the same diamond frame structure are the same length, but the connecting rods on the four sides of the adjacent diamond frame structures are different in length. Therefore, the area of the diamond airspace 61 at the head end is the smallest and gradually increases toward the diamond airspace 68 at the waist end.

[0070] In a specific design example, Figure 7The thoracolumbar positioning ruler shown has a connecting rod length of 36 mm on the four sides of the diamond-shaped frame structure at the head end, a connecting rod length of 70.5 mm on the four sides of the diamond-shaped frame structure at the waist end, and a connecting rod length of 40.5 mm, 44 mm, 48 mm, 56 mm, and 66 mm on the four sides of the other diamond-shaped frame structures at the head end and waist end, respectively. The total length of the thoracolumbar positioning ruler when fully extended is approximately 80 cm. The distance between the two central hinges of the head end section is approximately 72 mm, and the distances between the two central hinges of each section from the head end to the waist end are approximately 76 mm, 81 mm, 88 mm, 96 mm, 112 mm, 132 mm, and 141 mm, respectively. The different stretched lengths of the thoracolumbar positioning ruler can meet the preoperative positioning needs of spinal surgery patients of different heights, such as short or tall.

[0071] like Figures 7 to 10 As shown, the application of the thoracic and lumbar positioning ruler of the present invention in preoperative positioning of spinal surgery.

[0072] According to the structure of the human thoracic and lumbar spine, although the length of the thoracic and lumbar spine varies from person to person, the length ratio between each vertebra in the thoracic and lumbar spine of the same individual is generally fixed. For example, the vertebral distance between the C7 vertebra and the L4 vertebra is distributed proportionally. The C7 and L4 can be located by bone markers and are generally not affected by the thickness of subcutaneous fat. The C7 spinous process is a point that can be felt by hand, and the L4 can be located by connecting the highest points of the iliac bones on both sides. Figure 9 and Figure 10 The spinal surgery preoperative positioning shown in FIG, let the patient 9 lie flat on the operating table 8, determine the position of the cervical 7 spinous process and the lumbar 4 vertebra by bone features, and then Figure 7 The central hinge 51 of one end (head end) of the thoracolumbar positioning ruler is placed at the cervical 7 vertebra of the patient 9, and the central hinge 51 of the other end (lumbar end) of the positioning ruler is placed at the lumbar 4 vertebra. When the positioning ruler is stretched, the center hinge 51 of the positioning ruler and the middle position of the line connecting the adjacent center hinges (i.e., the center position of the diamond-shaped space 6) will automatically be located at the corresponding thoracic and lumbar vertebra. Figure 8 As shown, the central hinge at the leftmost end (head end) of the thoracic and lumbar positioning scale is positioned at the C7 vertebra, and then the middle positions of the central hinges from left to right and the connecting lines of adjacent central hinges correspond to the T1 to T12 vertebrae, and the L1 to L4 vertebrae respectively. The central hinge at the rightmost end (lumbar end) of the positioning scale is positioned at L4.

[0073] Because the length of the bones of the human body is basically fixed one by one. During preoperative positioning, by using the digital marks on the thoracolumbar positioning ruler of the present invention, the position of a certain section of the spine can be clearly known, without the doctor having to count them one by one. For example, if a patient needs to undergo surgery at the thoracic vertebra 5, first, the surgeon touches the spinous process with his hands to determine the position of the cervical 7 and the lumbar 4, and then places the two ends of the positioning ruler at these two places. The positioning ruler is automatically pulled apart, and the marks ④ and ⑥ on the central hinge are found in the thoracic vertebra area of the unfolded positioning ruler. The middle position of the line connecting these two hinges is the position of the thoracic vertebra 5. The developable positioning metal object 7 is placed in the middle position of the diamond-shaped space 6 between the two hinges. After confirmation by taking a photo, the preoperative positioning of the thoracic vertebra 5 is completed. If the patient needs to undergo surgery at the thoracic vertebra 4, then only the marks ④ in the thoracic vertebra area of the thoracolumbar positioning ruler need to be found, and the positioning metal object 7 is placed on the corresponding hinge ④. After confirmation by taking a photo, the preoperative positioning of the thoracic vertebra 4 is completed, and the surgical segment is determined. Therefore, after determining the positions of C7 and L4, there is no need to manually touch and count the spinal segments between C7 and L4 one by one before the operation to determine the surgical segments, thus avoiding problems such as miscounting and multiple radiographs, and shortening the operation time.

[0074] The thoracic and lumbar positioning scale can be made of a material such as plastic that will not affect fluoroscopic radiography and can be made of a soft material that fits closely to the spine.

[0075] The positioning metal objects used for transillumination positioning can be cylindrical, beaded, etc. If multiple surgeries are required, positioning metal objects of different shapes can be used, which is conducive to transillumination distinction.

[0076] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A thoracic and lumbar vertebra positioning ruler, characterized in that: The invention comprises a stretchable structure formed by connecting a plurality of connecting rods through hinges. Adjacent connecting rods can rotate and cooperate with each other to form a plurality of diamond frame structures after stretching. The diamond airspace area formed by the diamond frame structures gradually increases.

2. The thoracic and lumbar vertebra positioning ruler according to claim 1, characterized in that: The area of the diamond-shaped airspace at the head end of the thoracic and lumbar positioning ruler is the smallest, and gradually increases towards the lumbar end.

3. The thoracic and lumbar vertebra positioning scale according to claim 1, characterized in that: The hinges are marked with numbers.

4. The thoracic and lumbar vertebra positioning ruler according to claim 1, characterized in that: The hinged part is provided with a storage platform.

5. The thoracic and lumbar vertebra positioning scale according to claim 1, characterized in that: It includes an eight-section diamond frame structure.

6. The thoracic and lumbar vertebra positioning scale according to claim 1, characterized in that: The connecting rod comprises a long connecting rod and a short connecting rod, and the long connecting rod and the short connecting rod are assembled together through a hinge.

7. A preoperative positioning device for spinal surgery, comprising the thoracic and lumbar positioning ruler according to any one of claims 1 to 6.

8. The spinal surgery preoperative positioning device according to claim 7, characterized in that: Also included are positioning metal objects for transmission imaging.

9. Use of the thoracic and lumbar positioning ruler according to any one of claims 1 to 6 in preparing a preoperative positioning device for spinal surgery.

10. The use according to claim 7, characterized in that Includes positioning metal objects for transmission imaging.

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