A positioning and bending mechanism with a scale and a segmented spinal column orthopedic rod bending device

Abstract

This invention provides a positioning bending mechanism with a scale and a segmented bending device for spinal orthotics, belonging to the field of surgical medical device technology. It is used for pre-bending of spinal orthotics before surgery and consists of a base component, a clamping assembly, a sliding clamping assembly, a positioning slide assembly, and a rotating cylinder assembly. Its core working principle is to determine the longitudinal position of the bending point using a linear slide rail and its side scale, and to set the bending plane using the angle adjustment scale of the rotating cylinder assembly. A displacement measuring instrument installed on the adjusting cylinder presets and monitors the bending displacement in real time. During operation, the bending bolt is turned to push the bending clamp to apply pressure to the orthotics until its deformation reaches the preset value. This device transforms preoperative three-dimensional planning into quantifiable operations in three dimensions: linearity, angle, and displacement, achieving closed-loop control from "measurement and positioning" to "precise bending," significantly improving the accuracy, efficiency, and repeatability of orthotics shaping.

Description

Technical Field

[0001] This invention relates to the field of surgical medical device technology, and in particular to a positioning bending mechanism with a ruler and a segmented bending device for a spinal orthotic rod. Background Technology

[0002] Spinal orthotic rods are key implants in spinal internal fixation surgery. Their pre-bending shape must be highly matched with the physiological or pathological curvature of the patient's spine to ensure the orthotic effect and reduce surgical risks.

[0003] Currently, clinical practice mainly relies on surgeons to perform bending and shaping on-site based on visual observation and manual experience. This method has the following significant limitations:

[0004] First, its accuracy depends entirely on the surgeon's personal experience and feel, and the bending shape is difficult to precisely match the preoperative three-dimensional planning based on medical images, resulting in significant random errors. Second, the operation process lacks objective and quantitative feedback. To verify the bending accuracy, it is often necessary to repeatedly temporarily connect the orthotic rod with the patient's pedicle screws for verification. This process is not only inefficient and prolongs the operation time, but may also cause damage to the orthotic rod surface, loosening of screws, or even fatigue fracture due to repeated assembly and disassembly. In addition, this manual method cannot achieve parametric recording and reproduction of the bending process, which is not conducive to the establishment of standardized surgical procedures and the promotion of the technology. Summary of the Invention

[0005] The purpose of this invention is to provide a positioning and bending mechanism with a scale. By using the side scale of the base component, the angle adjustment scale of the rotating cylinder component, and the displacement measuring instrument, the digital preoperative planning is transformed into quantifiable parameters of linear, angular, and bending displacement. This enables closed-loop control from precise positioning and quantified bending to real-time detection, thereby significantly improving the forming accuracy, efficiency, and standardization of the spinal orthotic rod, and overcoming the shortcomings of existing manual bending orthotic rods.

[0006] The objective of this invention is achieved through the following technical solution: a positioning bending mechanism with a scale and a segmented bending device for a spinal orthopedic rod, comprising a base component, a fixed clamp assembly, a sliding clamp assembly, a positioning slide assembly, and a rotating cylinder assembly. The base component includes a linear slide rail and a positioning hole. The sliding clamp assembly includes a tapered positioning column. The positioning slide assembly includes a side connecting arm. The rotating cylinder assembly includes an adjusting rotating cylinder, a bending bolt, an adapter, a displacement measuring instrument, and a bending seat.

[0007] The positioning holes are arranged vertically in the body of the linear slide rail, and side scales are provided on both sides of the linear slide rail.

[0008] The bottom of the main body of the fixed clamp assembly is fixedly connected to the end of the linear slide rail, the bottom of the main body of the sliding clamp assembly is slidably connected to the top of the linear slide rail, and the tapered positioning post is vertically slidably connected to the bottom of the main body of the sliding clamp assembly. When the sliding clamp assembly clamps the orthopedic rod, the tapered positioning post can be simultaneously inserted into any of the opposite positioning holes.

[0009] The positioning slide assembly is linearly arranged and slidably connected in the linear slide rail. The side connecting arms are distributed in pairs, and the bottom end of the side connecting arm on the same side is slidably connected to the side of the linear slide rail. The top ends of the side connecting arms are fixedly connected side by side without contacting each other. The adjusting cylinder is damped and screwed between the parallel cylinders. An angle adjustment scale is set on the outer circular surface of one set of parallel cylinders. The main body of the adjusting cylinder is coaxially installed and fixed with its diameter as the path. Pairs of bent bolts are connected in the symmetrically distributed aligning threaded parts, or bent bolts and adapter seats are connected. The adapter seat can be positioned and fixedly inserted with a displacement measuring instrument, so that the monitoring probe at the inner end of the displacement measuring instrument can be adjusted in distance and position relative to the center of the adjusting cylinder. The inner end of the bent bolt is screwed with a bent seat. The outer circular surface of the adjusting cylinder is fixedly connected with a stepped sleeve, and both sides of the stepped sleeve are also provided with knurled surfaces.

[0010] The technical solution of this invention is used as follows:

[0011] One end of the orthotic rod to be bent is clamped to a fixed clamp assembly with a fixed position. The sliding clamp assembly can slide and adjust the linear distance relative to the fixed clamp assembly to adapt to the clamping work before bending orthotic rods of different lengths in specific operations.

[0012] When the sliding clamp assembly clamps the other end of the orthotic bar, the tapered positioning post at the bottom of the sliding clamp assembly can be inserted downward into the set of positioning holes opposite it. After the sliding clamp assembly clamps the other end of the orthotic bar in place, the tapered positioning post is inserted downward into the position where the outer tapered surface and the inner hole surface of the positioning hole are in place.

[0013] The positioning slide assembly and the rotating cylinder assembly are set up in groups, and their positions and numbers should be equal to the number of all key vertebrae (including all end vertebrae, apical vertebrae, and necessary intermediate vertebrae and inflection points) that need to be precisely passed through by the orthotic rod as determined in the surgical plan; it is determined by the type, severity and fixed segment of the deformity, and aims to uniquely define a smooth and accurate three-dimensional spatial curve with the fewest points. This three-dimensional spatial curve requires digital preoperative planning based on three-dimensional image reconstruction and the establishment of a spatial coordinate system;

[0014] The clamping component at one end of the orthopedic rod is defined as the origin of the spatial coordinate system. In the preoperative planning, along the planned spinal sequence, a coordinate point is determined for each group of corresponding positioning slide components and rotating cylinder components. These points are the predetermined insertion points of the pedicle screw tail groove, and three-dimensional coordinates relative to the origin of the coordinate system are formed before the operation.

[0015] The side scale set on the side of the linear slide rail can determine the straight distance of any set of positioning slide components relative to the fixed clamp components, i.e. the origin of the coordinate system, and can lock after the positioning slide components move to the position marked by the side scale.

[0016] The rotating cylinder assembly can rotate 360° with damping based on the parallel fixed cylinders. The two sets of alignment threaded parts installed coaxially along the diameter path in the same set of adjusting rotating cylinders can be connected to both the bending bolt and the adapter. The bending retainer set at the inner end of the bending bolt will not affect the disassembly and assembly of the bending bolt and the alignment threaded part.

[0017] When both sets of aligning threaded parts in the same adjusting cylinder are fitted with bending bolts, the unbent or already bent points of the orthotic bar can be secured. That is, the bending seats at the inner ends of the two sets of bending bolts are respectively attached to the two outer circular surfaces of the unbent or already bent orthotic bar, so that the bending points of the orthotic bar can stably form the bending operation.

[0018] After installing the adapter in the alignment thread section, and cooperating with the damped rotation of the adjusting cylinder relative to the parallel fixed cylinder, the displacement measuring instrument that can be inserted and locked in the adapter can locate the bending distance of the point to be bent on the straightening rod, that is, the bending of the point at different axial rotation angles. Combined with the straight distance of the positioning slide assembly relative to the coordinate origin, each point can be positioned according to the spatial coordinates for bending work.

[0019] Before bending, the probe at the inner end of the displacement measuring instrument is brought into contact with the outer circular surface of the straight section of the straight bar and zeroed; then, according to the bending distance and the value displayed by the indicator module at the outer end of the displacement measuring instrument, the displacement measuring instrument is moved to the position indicated by the bending value and locked.

[0020] Then, by tightening the bending bolt, the inner end of the bending holder is made to fit against the outer surface of the orthotic bar at the bending point. The bending bolt is then tightened to compress the outer surface of the orthotic bar, causing it to gradually deform towards the inner probe of the displacement measuring instrument. When the deformation bends to the point where the outer surface of the orthotic bar contacts the inner probe of the displacement measuring instrument, an alarm is triggered to indicate that the bending at that point is complete.

[0021] Once all points on the orthotic rod have been bent as described above, it can be removed.

[0022] Another object of the present invention is to provide a segmented bending device for a spinal orthotic bar, including the above-mentioned positioning bending mechanism with a scale, wherein the positioning slide assembly, the rotating cylinder assembly, the clamping member and the safety locking member are used in a group arranged in a manner.

[0023] This segmented bending device for spinal orthotics achieves precise segmented bending through the following process:

[0024] First, clamp the two ends of the orthotic rod between the fixed clamp assembly and the sliding clamp assembly respectively. The sliding clamp assembly achieves rapid and stable initial positioning by cooperating with the positioning hole on the linear slide rail through the tapered positioning post at its bottom.

[0025] Then, according to the preoperative planned coordinates, multiple sets of positioning slide components are moved along the side scale of the linear slide rail and locked to the predetermined position; for each point to be bent, an adapter is installed on one side of the corresponding adjusting cylinder and a displacement measuring instrument is inserted to set the precise bending amount, while a bending bolt and a bending clamp are installed on the other side; during operation, the bending bolt is turned to push the bending clamp to squeeze the orthotic rod, causing it to deform towards the probe of the displacement measuring instrument until it contacts the trigger signal, thus completing the quantitative bending of that point;

[0026] After completing the operation at all points along the slide rail in sequence, a pre-bending orthotic bar that matches the three-dimensional shape of the spine can be obtained.

[0027] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0028] (1) This invention achieves precise spatial control of the bending process of the orthotic rod through an integrated scale and positioning system; the side scale on the linear slide rail cooperates with the positioning slide assembly to accurately set the longitudinal position of the bending point; the rotating cylinder assembly can determine the bending direction by relying on the rotation of the parallel fixed cylinder and the angle adjustment scale on it; the displacement measuring instrument installed through the adapter can preset and monitor the bending displacement; these three systems (linear, angle, displacement) together construct a simple spatial coordinate system with the fixed clamp assembly as the origin, enabling doctors to strictly follow the data of the three-dimensional preoperative planning, transform the abstract model into a specific and quantifiable bending operation of the orthotic rod, greatly improving the accuracy of the orthosis and the predictability of the surgery;

[0029] (2) This invention enables parameterized, segmented, and precise bending of the orthotic rod; the spatial coordinates of the three-dimensional digital preoperative planning are decomposed and mapped to the three physical scale systems of the device: First, the positioning slide assembly is moved and locked along the linear slide rail to set the longitudinal position of the bending point; second, the adjusting cylinder is rotated and the bending direction is determined according to the angle adjustment scale; finally, the bending amount is preset and monitored by the displacement measuring instrument on the adapter seat; for each bending point, the bending bolt is operated to drive the bending chuck to apply force to the rod until its deformation reaches the preset value, thus completing the bending at that point. By sequentially executing all planned points, a personalized orthotic rod that precisely matches the three-dimensional morphology of the patient's spine is finally obtained;

[0030] (3) This invention innovatively integrates measurement and execution functions into the same workstation to form a highly efficient closed-loop control. During operation, a displacement measuring instrument can be installed on the alignment threaded part and a bending value can be preset to make it a target limiter. Then, a bending bolt is screwed into another pair of alignment threaded parts to push the bending chuck to squeeze the straightening rod. During the bending process, the displacement measuring instrument provides real-time feedback. When the deformation reaches the preset value, it indicates completion. This "set-execute-feedback-termination" mode replaces the traditional method that relies on experience and visual inspection, improves the accuracy to the instrument level, avoids under-bending or over-bending, and saves the tediousness of repeated verification, significantly improving efficiency and reliability.

[0031] (4) The design of this invention is highly modular and flexible, and can adapt to diverse clinical needs. The sliding clamp assembly can be adjusted along the linear slide rail to accommodate orthopedic rods of different lengths. The conical positioning post and positioning hole at the bottom ensure stable positioning after clamping. The positioning slide assembly and the rotating cylinder assembly can be flexibly configured according to the number of key surgical points (such as the apex vertebra and inflection point) to support the shaping of complex three-dimensional spatial curves. The double alignment thread on the adjusting rotating cylinder serves as the core interface, and can be flexibly replaced with bending bolts or displacement measuring instruments to achieve rapid switching between measurement and bending functions. This strong adaptability enables it to meet the complex requirements for the shape of orthopedic rods in individualized surgery.

[0032] (5) This invention transforms the bending of the orthotic rod from "relying on the skill of medical staff" to a parameterized and standardized "process" through mechanical structure and scale system. The side scale, angle adjustment scale and displacement measuring instrument constitute a complete parameter recording system, so that the key data (distance, angle and displacement) of each bending point can be found, ensuring the accuracy of single operation and the repeatability of batch processing. At the same time, the insertion and locking of the conical positioning column and the positioning card hole, as well as the damping rotation of the adjusting cylinder, effectively prevent accidental displacement during operation and ensure the stability of the process. This high degree of controllability and repeatability significantly reduces the surgical risk caused by deviations in instrument preparation. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a structural schematic diagram of the base component of the present invention;

[0036] Figure 3 This is a front view of the clamping assembly and linear slide rail portion of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the clamping assembly of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the retaining clip seat and the retaining sliding wedge seat of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the sliding clip assembly of the present invention;

[0040] Figure 7 This is a schematic diagram of the connection structure of the internal gear part of the present invention;

[0041] Figure 8 This is a front view of the slider portion of the present invention;

[0042] Figure 9 This is a schematic diagram of the positioning carriage assembly of the present invention;

[0043] Figure 10 This is a front view of the positioning carriage assembly of the present invention;

[0044] Figure 11 This is a schematic diagram of the installation structure of the rotary cylinder assembly of the present invention;

[0045] Figure 12 This is an exploded structural diagram of the rotary cylinder assembly of the present invention;

[0046] Figure 13 This is a schematic diagram of the installation of the clamping component of the present invention;

[0047] Figure 14 This is a first-view structural schematic diagram of the clamping component and the safety locking component of the present invention;

[0048] Figure 15This is a second-view structural schematic diagram of the clamping component and the safety locking component of the present invention.

[0049] Figure label:

[0050] 1. Base component; 2. Fixing clamp assembly; 3. Sliding clamp assembly; 4. Positioning slide assembly; 5. Rotating cylinder assembly; 6. Clamping component; 7. Safety locking component; 101. Bottom fixing plate; 102. Linear slide rail; 103. Top slide groove; 104. Side slide groove; 105. Positioning locking hole; 106. Top scale; 107. Side scale; 201. Bottom fixing seat; 202. Fixing clamp seat; 203. Fixing wedge seat; 204. Fixing threaded part; 205. Fixing locking bolt; 206. Fixing sliding wedge seat; 207. Fixing rotating sleeve; 208. Fixing clamp shaft ; 209. Fixing sleeve; 210. Fixing rotating seat; 211. Fixing groove; 212. Fixing slider; 301. Bottom sliding seat; 302. Sliding position clamping seat; 303. Sliding position wedge seat; 304. Sliding position threaded part; 305. Sliding position locking bolt; 306. Sliding position sliding wedge seat; 307. Sliding position rotating sleeve; 308. Sliding position clamping shaft; 309. Sliding position sleeve; 310. Sliding position rotating seat; 311. Sliding position groove; 312. Sliding position slider; 313. Vertical groove; 314. Square slider; 315. Conical positioning post; 316. 317. Gear sleeve; 318. Internal gear; 319. Rotating groove; 320. Sliding groove; 321. Sliding block; 322. Inner insert block; 323. Follower rack; 324. Preload spring; 325. Scale indicator line; 401. Side connecting arm; 402. Side slider; 403. Locking threaded part; 404. Locking bolt; 405. Parallel fixed cylinder; 406. Side pointer; 501. Angle adjustment groove; 502. Angle adjustment scale; 503. Adjusting cylinder; 504. Rotating table; 505. Stepped fixed sleeve; 506. Knurled surface; 507. Alignment threaded part; 508. Angle adjustment indicator; 509. Bending bolt; 510. Adapter; 511. Displacement measuring instrument; 512. Set thread; 513. Hand-tightening bolt; 514. Bending seat; 601. Pressing seat; 602. Pressing groove; 603. Wedge block; 604. Wedge sliding column; 605. Wrench arm; 606. Wrench block groove; 607. Wrench arm bearing; 608. Wrench arm shaft; 609. Outer seat; 610. Irregular compression spring; 701. Safety sleeve; 702. Relief groove; 703. Relief groove; 704. Relief slider; 705. Top spring. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] like Figures 1-15 As shown, a positioning bending mechanism with a scale is provided. The linear slide rail 102 in the base component 1 is made of a metal profile with a certain rigidity. The positioning holes 105 are arranged vertically in the main body of the linear slide rail 102. Side scales 107 are provided on both sides of the linear slide rail 102.

[0054] The bottom of the main body of the fixed clamp assembly 2 is fixedly connected to the end of the linear slide rail 102, and the bottom of the main body of the sliding clamp assembly 3 is slidably connected to the top of the linear slide rail 102. The sliding clamp assembly 3 can be adjusted in a linear distance relative to the fixed clamp assembly 2. The orthotic rod is clamped between the fixed clamp assembly 2 and the sliding clamp assembly 3. The tapered positioning post 315 is vertically slidably connected to the bottom of the main body of the sliding clamp assembly 3. When the sliding clamp assembly 3 clamps the orthotic rod, the tapered positioning post 315 can be simultaneously inserted into any of the opposite positioning holes 105.

[0055] The positioning carriage assembly 4 is linearly arranged and slidably connected in the linear slide rail 102. Side connecting arms 401 are distributed in pairs, with the bottom end of the side connecting arms 401 on the same side slidably connected to the side of the linear slide rail 102. Parallel, non-contacting fixed cylinders 405 are fixedly connected side-by-side between the top ends of the side connecting arms 401. Adjusting cylinders 503 are damped and screwed between the parallel fixed cylinders 405. An angle adjustment scale 502 is provided on the outer circumference of one set of parallel fixed cylinders 405. The main body of the adjusting cylinder 503... The center is coaxially mounted with a aligning threaded part 507 along its diameter. Pairs of bent bolts 509 are connected to the symmetrically distributed aligning threaded parts 507, or bent bolts 509 and adapter seats 510 are connected. The adapter seat 510 can be positioned and locked to a displacement measuring instrument 511, so that the monitoring probe at the inner end of the displacement measuring instrument 511 can be adjusted in distance and position relative to the center of the adjusting cylinder 503. A bent clamp 514 is screwed to the inner end of the bent bolt 509.

[0056] The working principle is as follows:

[0057] Before clamping, the straightness of the orthotic bar to be bent must be within the acceptable range. It is necessary to eliminate the adverse effects of orthotic bars with unacceptable straightness on subsequent bending work.

[0058] One end of the orthotic rod to be bent is clamped to the fixed clamp assembly 2 with a fixed position. The sliding clamp assembly 3 can slide and adjust the linear distance relative to the fixed clamp assembly 2 to adapt to the clamping work before bending orthotic rods of different lengths in specific operations.

[0059] When the sliding clamp assembly 3 clamps the other end of the orthotic bar, the tapered positioning post 315 at the bottom of the sliding clamp assembly 3 can be inserted downward into the set of positioning holes 105 directly opposite each other. After the sliding clamp assembly 3 clamps the other end of the orthotic bar in place, the tapered positioning post 315 is inserted downward into the position where the outer tapered surface is in contact with the inner surface of the positioning hole 105. That is, while the sliding clamp assembly 3 clamps the end of the orthotic bar away from the fixed clamp assembly 2, it can also form a positioning and clamping operation of the sliding clamp assembly 3 itself relative to the linear slide rail 102.

[0060] The positioning holes 105 on the linear slide rail 102 provide several discrete, equally spaced reference positioning points for the sliding clamp assembly 3. During actual clamping operations, medical staff can move the sliding clamp assembly 3 to the positioning hole 105 that is closest to the required length of the orthotic rod. The resulting deviation has a controllable impact on the accuracy of subsequent bending operations. The positioning slide assembly 4 and the rotating cylinder assembly 5 are set up in groups, and their positions and numbers should be equal to the number of key vertebrae (including all end vertebrae, apical vertebrae, and necessary intermediate vertebrae and inflection points) that need to be accurately passed through by the orthotic rod as determined in the surgical plan. It is determined by the type, severity, and fixed segment of the deformity, and aims to uniquely define a smooth and accurate three-dimensional spatial curve with the fewest points. This three-dimensional spatial curve requires digital preoperative planning based on three-dimensional image reconstruction and the establishment of a spatial coordinate system, which is existing technology.

[0061] The clamping component 2 at one end of the orthopedic rod is defined as the origin of the spatial coordinate system. In the preoperative planning, along the planned spinal sequence, a coordinate point is determined for each group of corresponding positioning slide components 4 and rotating cylinder components 5. These points are the predetermined insertion points of the pedicle screw tail groove, and three-dimensional coordinates relative to the origin of the coordinate system are formed before the operation.

[0062] The side scale 107 provided on the side of the linear slide rail 102 can determine the straight distance of any set of positioning slide assembly 4 relative to the fixed clamp assembly 2, i.e. the origin of the coordinate system, and can lock after the positioning slide assembly 4 moves to the position marked by the side scale 107.

[0063] The rotating cylinder assembly 5 can rotate 360° with damping based on the parallel fixed cylinder 405. The two sets of alignment threaded parts 507 installed coaxially with their diameter as the path in the same set of adjusting rotating cylinders 503 can be connected to both the bending bolt 509 and the adapter 510. The bending retainer 514 provided at the inner end of the bending bolt 509 will not affect the disassembly and assembly of the bending bolt 509 and the alignment threaded part 507. That is, the outer contour of the bending retainer 514 is smaller than the maximum outer diameter of the bending bolt 509.

[0064] When both sets of alignment threaded parts 507 in the same adjusting cylinder 503 are equipped with bending bolts 509, they can form a locking mechanism for the unbent or bent points of the orthopedic rod. That is, the bending retainers 514 at the inner ends of the two sets of bending bolts 509 respectively abut against the two outer circular surfaces of the unbent or bent orthopedic rod, so that the bending points of the orthopedic rod can stably form the bending operation.

[0065] Furthermore, the internal dimensions of the adjusting cylinder 503 and the bending bolt 509 or displacement measuring instrument 511 connected in the alignment threaded part 507 can all accommodate the maximum bending distance of the orthotic rod.

[0066] After the adapter 510 is installed in the alignment threaded part 507, the damped rotation of the adjusting cylinder 503 relative to the parallel fixed cylinder 405 is coordinated with the displacement measuring instrument 511 that is inserted and can be locked in the adapter 510 to locate the bending distance of the straightening rod at the bending point, that is, the bending of the point at different axial rotation angles. Combined with the straight distance of the positioning slide assembly 4 relative to the coordinate origin, each point can be positioned according to the spatial coordinates for bending work.

[0067] Before bending, the probe at the inner end of the displacement measuring instrument 511 is brought into contact with the outer circular surface of the straight section of the straight rod and zeroed; then, according to the bending distance and the value displayed by the indicator module at the outer end of the displacement measuring instrument 511, the displacement measuring instrument 511 is moved to the position indicated by the bending value and locked.

[0068] Then, by tightening the bending bolt 509, the inner end of the bending bracket 514 is made to fit against the outer circular surface of the orthotic rod at the bending point. The bending bolt 509 is then tightened, causing the bending bracket 514 to compress the outer circular surface of the orthotic rod, causing it to gradually deform towards the inner probe of the displacement measuring instrument 511. When the deformation bends to the point where the outer circular surface of the orthotic rod contacts the inner probe of the displacement measuring instrument 511, an alarm is issued to indicate that the bending at that point is complete.

[0069] After bending all points of the orthotic rod as described above, move the bending seat 514 and displacement measuring instrument 511 in the rotary cylinder assembly 5 to a position that does not interfere with its removal, loosen the clamping of the fixed clamp assembly 2 and the sliding clamp assembly 3, and remove it.

[0070] The displacement measuring instrument 511 is a conventional displacement or deformation measuring device in the art, such as a digital dial indicator or an inductive micrometer. It converts the linear displacement generated by the probe contacting the surface of the object being measured (such as a straightening rod) into a readable electrical signal value through a built-in electronic sensing mechanism. The instrument is detachably mounted on the adjusting cylinder 503 via an adapter 510, with its probe facing the direction of force application of the bending chuck 514. It is used to monitor the deformation of the straightening rod relative to its initial position during the bending operation, thereby providing accurate quantitative feedback for the bending process. Improvements to the structure and measurement principle of the instrument itself are not within the scope of protection of this invention. This invention only relates to its innovative application and synergistic setting in this specific mechanism.

[0071] The specific structures of the base component 1, the fixed clamp assembly 2, and the sliding clamp assembly 3 are as follows: Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a bottom plate 101 is fixed to the bottom end of the linear slide rail 102. The bottom plate 101 is used to improve the stability of operation.

[0072] The top slide groove 103 is opened at the top of the linear slide rail 102, and the side slide grooves 104 are opened on both sides of the linear slide rail 102. The positioning hole 105 is opened between the bottom end of the top slide groove 103 and the partition cavity of the linear slide rail 102.

[0073] The top of the linear slide rail 102 is provided with a top scale 106, which is used to indicate and control the movement distance of the sliding clamp assembly 3 relative to the fixed clamp assembly 2.

[0074] The lower ends of both sides of the bottom sliding seat 301 are provided with scale indicator lines 324, which are used in conjunction with the top scale 106 to indicate the relative distance between the sliding clamp assembly 3 and the fixed clamp assembly 2 (starting coordinate origin).

[0075] The bottom base 201 serves as the main body for the clamping assembly 2. Its bottom end is fixedly connected to one end of the top sliding groove 103. The clamping seat 202 is screwed onto one side of the top end of the bottom base 201. A clamping wedge seat 203 is fixed to the other side of the bottom end of the clamping seat 202. A clamping threaded part 204 is installed and fixed on the upper part of the main body of the bottom base 201. A clamping locking bolt 205 is threaded into the clamping threaded part 204. A clamping sliding wedge seat 206 is slidably connected to the outer inclined surface of the clamping wedge seat 203. The inner inclined surface of the clamping sliding wedge seat 206 fits against the outer inclined surface of the clamping wedge seat 203. A clamping sleeve 207 is screwed onto the other end of the bottom base 201 main body.

[0076] Furthermore, after the retaining clamp seat 202 is engaged with the bottom retaining seat 201, the retaining locking bolt 205 can be tightened to fit the retaining sleeve 207 against the outside of the retaining sliding wedge seat 206. As the retaining locking bolt 205 is further tightened, the inner inclined surface of the retaining sliding wedge seat 206 can be pressed against the outer inclined surface of the retaining wedge seat 203. The vertical pressure separated by the pressing force can drive the retaining clamp seat 202 to form a clamping action.

[0077] A retaining clamp shaft 208 is horizontally inserted and fixed on one side of the top end of the bottom base 201, and a retaining screw seat 210 is fixed on one side of the bottom end of the retaining clamp seat 202. The retaining screw seat 210 is screwed to the retaining clamp shaft 208.

[0078] Both the top groove of the bottom base 201 and the bottom groove of the positioning clamp 202 are fixed with positioning sleeves 209. The positioning sleeves 209 are made of a soft material with a hardness less than that of the orthopedic rod, which allows the orthopedic rod to be clamped without damage after the positioning clamp 202 is clamped in place relative to the bottom base 201.

[0079] A retaining groove 211 is symmetrically provided on the inclined surface of the outer side of the retaining wedge seat 203. A retaining slider 212 is symmetrically fixed on the inclined surface of the inner side of the retaining sliding wedge seat 206. The retaining slider 212 on the same side is slidably connected to the retaining groove 211 and will not detach.

[0080] Both the fixed wedge seat 203 and the fixed sliding wedge seat 206 have notches at their bottom ends that are directly opposite the fixed locking bolt 205. These notches are used to engage with the fixed locking bolt 205 after the fixed clamp seat 202 is engaged, and to make the fixed sleeve 207 and the fixed sliding wedge seat 206 form a compression fit.

[0081] The sliding clip assembly 3 is a structural optimization based on the fixed clip assembly 2;

[0082] Similarly, the bottom sliding seat 301 serves as the main body for the sliding clamp assembly 3, with its bottom end slidably connected to the other end of the top sliding groove 103. The sliding position clamp seat 302 is screwed onto one side of the top of the bottom sliding seat 301. A sliding position wedge seat 303 is fixed on the other side of the bottom end of the sliding position clamp seat 302. A sliding position threaded part 304 is installed and fixed on the upper part of the main body of the bottom sliding seat 301. A sliding position locking bolt 305 is threaded into the sliding position threaded part 304. A sliding position sliding wedge seat 306 is slidably connected to the outer inclined surface of the sliding position wedge seat 303. The inner inclined surface of the sliding position sliding wedge seat 306 fits against the outer inclined surface of the sliding position wedge seat 303. A sliding position sleeve 307 is screwed onto the other end of the main body of the bottom sliding seat 301 through the sliding position locking bolt 305.

[0083] A sliding position clamping shaft 308 is horizontally inserted and fixed on one side of the top of the bottom sliding seat 301, and a sliding position rotating seat 310 is fixed on one side of the bottom of the sliding position clamping seat 302. The sliding position rotating seat 310 is spun to the sliding position clamping shaft 308.

[0084] A sliding sleeve 309 is fixedly connected to the top groove of the bottom sliding seat 301 and the bottom groove of the sliding position clamp seat 302. Similarly, the sliding sleeve 309 is made of a soft material with a hardness less than that of the orthopedic rod.

[0085] A sliding groove 311 is symmetrically provided on the inclined surface of the outer side of the sliding wedge seat 303. A sliding slider 312 is symmetrically fixed on the inclined surface of the inner side of the sliding wedge seat 306. The sliding slider 312 on the same side is slidably connected to the sliding groove 311 and will not detach.

[0086] Both the sliding wedge seat 303 and the sliding wedge seat 306 have notches at their bottom ends that are directly opposite the sliding locking bolt 305.

[0087] The main body of the bottom sliding seat 301 has a vertical sliding groove 313, the square slider 314 is slidably connected in the vertical sliding groove 313, and the conical positioning post 315 is fixed to the bottom end of the square slider 314.

[0088] Gear sleeves 316 are fixedly installed on both sides of the vertical slide groove 313 and at the position directly opposite to the sliding locking bolt 305. Both sets of gear sleeves 316 extend into the inner cavity of the vertical slide groove 313. Sliding grooves 319 are evenly opened on the non-threaded outer circular surface of the sliding locking bolt 305. Sliding blocks 320 are evenly fixed in the inner hole of the internal gear 317. The internal gear 317 is slidably connected in the sliding groove 319 through the sliding blocks 320.

[0089] Both ends of the internal gear 317 are provided with rotating grooves 318. The rotating grooves 318 on the same side are screwed into the inner end of the gear sleeve 316. This allows the internal gear 317 to rotate as the sliding locking bolt 305 is turned. This rotation is achieved by the sliding engagement between the internal gear 317 and the sliding locking bolt 305, as well as the screw engagement with the gear sleeve 316. The top of the square slider 314 is fixed with a follower rack 322, which meshes with the internal gear 317.

[0090] The inner insert block 321 passes through the side wall of the vertical slide groove 313 and is inserted into its inner cavity. One end of the preload spring 323 is locked with the inner insert block 321, and the other end is locked with the square slider 314. The elastic force provided by the preload spring 323 can achieve the purpose of preventing the sliding locking bolt 305 from loosening through the cooperation of the follower rack 322 and the internal gear 317.

[0091] After the sliding position clamp seat 302 is engaged with the bottom sliding seat 301, and after the sliding clamp assembly 3 moves to a position directly opposite any set of positioning holes 105, the sliding position locking bolt 305 can be tightened to allow the sliding position sleeve 307 to fit against the outside of the sliding position sliding wedge seat 306. As the sliding position locking bolt 305 is further tightened, the inner inclined surface of the sliding position sliding wedge seat 306 can be pressed against the outer inclined surface of the sliding position wedge seat 303. The vertical pressure separated by the pressing force can drive the sliding position clamp seat 302 to form a clamping action.

[0092] Simultaneously, the action of turning the sliding locking bolt 305 can also enable the internal gear 317 to cooperate with the follower rack 322 to form a transmission, causing the square slider 314 and the conical positioning post 315 to move downward;

[0093] Since the tapered positioning post 315 is a tapered cylinder with a larger top and a smaller bottom, it can guide the tapered positioning post 315 to gradually fit against the inner wall of the positioning hole 105, automatically compensate for minor alignment deviations, and after the sliding clamp seat 302 is clamped in place, the tapered positioning post 315 is just inserted into the position that fits and squeezes against the positioning hole 105, thus realizing a safe and stable connection between the sliding clamp assembly 3 and the linear slide rail 102.

[0094] The specific structures of the positioning carriage assembly 4 and the rotating cylinder assembly 5 are as follows: Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, a side slider 402 is fixed at the bottom end of each set of side connecting arms 401, and the side sliders 402 on the same side are slidably connected in the side slide groove 104.

[0095] The locking threaded part 403 is installed and fixed in the middle of the side slider 402. Each set of locking threaded parts 403 is threaded with a locking bolt 404. After the positioning slide assembly 4 slides to the set position, the locking bolt 404 is screwed on to press against the inner side of the side slide groove 104, thereby locking the sliding position of the positioning slide assembly 4.

[0096] Each set of side connecting arms 401 is also equipped with a side pointer 406 at the lower end. The side pointer 406 on the same side works in conjunction with the side scale 107 to form a mark of the sliding position of the positioning slide assembly 4 relative to the fixed clamp assembly 2 (starting coordinate origin).

[0097] Both ends of the adjusting cylinder 503 are fixed with a rotating platform 504. Each set of parallel fixed cylinders 405 has an angle adjusting groove 501 at its inner end. The rotating platform 504 on the same side is screwed into the angle adjusting groove 501. The two sets of parallel fixed cylinders 405 in the same positioning slide assembly 4 can provide space for the 360° rotation of the adjusting cylinder 503 and the components installed in the adjusting cylinder 503.

[0098] The stepped sleeve 505 is fixed to the outer circular surface of the adjusting cylinder 503. An angle adjustment indicator point 508 is provided on one end face of the adjusting cylinder 503. The angle adjustment indicator point 508 is used in conjunction with the angle adjustment scale 502 to indicate the rotation angle of the adjusting cylinder 503, the bending bolt 509, and the displacement measuring instrument 511.

[0099] The adapter 510 has a set screw part 512 installed and fixed in its main body. The set screw part 512 is threaded with a hand-tightening bolt 513. By tightening the hand-tightening bolt 513, the inner end of the hand-tightening bolt 513 is pressed against the outside of the displacement measuring instrument 511, which can form the locking and unlocking of the displacement measuring instrument 511 to adjust its position.

[0100] Both sides of the step sleeve 505 are also provided with knurled surfaces 506.

[0101] The specific structures of the clamping component 6 and the safety locking component 7 used to achieve stability in adjusting the rotation angle of the adjusting cylinder 503 are shown in the figure. Figure 1 , Figure 13 , Figure 14 and Figure 15 As shown, the clamping seats 601 are used in pairs, each with a knurled surface 506 on the outer side. Each set of side connecting arms 401 has a clamping groove 602 horizontally opened at the top. The clamping seats 601 on the same side are elastically slidably connected to the clamping groove 602, so that the clamping seats 601 naturally move away from the knurled surface 506. The inclined block 603 is fixed to the top of the main body of the clamping seat 601. Each set of side connecting arms 401 has an inclined sliding cutting column 604 screwed to the top. The inclined arc surface of the inclined sliding cutting column 604 is slidably tangent to the outer inclined surface of the inclined block 603.

[0102] A wrench arm bearing 607 is fixedly installed at the top of the side connecting arm 401. A wrench arm shaft 608 is screwed into the wrench arm bearing 607. A sloping sliding cutting column 604 is fixedly connected to the inner end of the wrench arm shaft 608, and a wrench arm 605 is fixedly connected to the outer end of the wrench arm shaft 608.

[0103] An outer retainer 609 is fixed to the outer end of the main body of the clamping seat 601. A shaped compression spring 610 is sleeved and installed in the main body of the clamping seat 601, with one end locked to the outer retainer 609 and the other end locked to the side of the side connecting arm 401, so as to form an elastic movement of the clamping seat 601 away from the knurled surface 506.

[0104] The top end of the side connecting arm 401 is provided with a slanted block groove 606 that communicates with the pressing groove 602, which provides space for the cooperation between the slanted block 603 and the slanted sliding column 604.

[0105] Both ends of the safety sleeve 701 are fixed with relief sliders 704. The relief groove 702 provided in the main body of the side connecting arm 401 is provided with relief grooves 703 on both sides. The relief sliders 704 on the same side are slidably connected with the relief grooves 703. One end of the top spring 705 is fixed to the safety sleeve 701, and the other end is fixed to the bottom end of the relief groove 702. Under the action of the elastic force of the top spring 705, the component formed by the fixed connection of the relief sliders 704 and the safety sleeve 701 can naturally elastically move upward.

[0106] When using the clamping seat 601 to securely lock the current rotational position of the adjusting cylinder 503 and the knurled surface 506, first, by moving one side of the lever 605, the inclined sliding column 604 can be rotated, and at the same time, the clearance slider 704 is pressed down, so that the inner end of the clamping seat 601 on the current side is pressed against the outside of the knurled surface 506 on one side. After that, the tail end of the lever 605 is aligned with the locking hole of the safety sleeve 701. After releasing the clearance slider 704, the safety sleeve 701 can be lifted up to lock the lever 605, so that the clamping seat 601 on the current side is restricted to the position of being in contact with the knurled surface 506 on one side.

[0107] Based on the above, the clamping seat 601 on the other side is locked outside the knurled surface 506 on the other side. The clamping seats 601 used in pairs on both sides can form a safe lock for adjusting the rotation position of the rotary cylinder 503 and the knurled surface 506.

[0108] The side connecting arm 401 not only has a pressing groove 602 and a relief groove 702 for sliding with the required components, but also has a segmented isolation cavity. The purpose is to achieve lightweighting while ensuring structural rigidity.

[0109] Finally, it should be noted that the operational description of the mechanism in this specification is limited to its function as a processing instrument. Any specific medical steps involving preoperative disinfection, intraoperative implantation, etc., fall within the scope of independent prior art and are not part of the technical solutions claimed in this invention. The above embodiments are only used to illustrate the technical solutions of this invention and are not intended to limit it. Although this invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this invention.

Claims

1. A positioning bending mechanism with a scale, comprising a base component (1), a fixing clamp assembly (2), and a sliding clamp assembly (3), characterized in that: It also includes a positioning carriage assembly (4) and a rotating cylinder assembly (5); The base component (1) includes a linear slide rail (102) and a positioning hole (105). The sliding clamp assembly (3) includes a tapered positioning post (315). The positioning holes (105) are arranged in the body of the linear slide rail (102). Side scales (107) are provided on both sides of the linear slide rail (102). The bottom of the main body of the fixed clamp assembly (2) is fixedly connected to the end of the linear slide rail (102). The bottom of the main body of the sliding clamp assembly (3) is slidably connected to the top of the linear slide rail (102). The tapered positioning post (315) is slidably connected to the bottom of the main body of the sliding clamp assembly (3). The positioning slide assembly (4) includes side connecting arms (401), and the rotating cylinder assembly (5) includes a bending bolt (509), an adapter (510), and a displacement measuring instrument (511). The positioning slide assembly (4) is linearly arranged and slidably connected in the linear slide rail (102). The side connecting arms (401) are distributed in pairs, and the bottom end of the side connecting arms (401) on the same side is slidably connected to the side of the linear slide rail (102). The top ends of the side connecting arms (401) are fixedly connected to each other with parallel fixed cylinders (405). The parallel fixed cylinders (405) are damped and screwed together with an adjustable... The adjusting cylinder (503) has an angle adjustment scale (502) on the outer surface of a set of parallel fixed cylinders (405). The main body of the adjusting cylinder (503) is symmetrically installed and fixed with alignment threaded parts (507). Pairs of bent bolts (509) are connected in the symmetrically distributed alignment threaded parts (507), or bent bolts (509) and adapter seats (510) are connected. The adapter seat (510) can be positioned and fixedly connected to a displacement measuring instrument (511). The inner end of the bent bolt (509) is screwed with a bent clamp seat (514). The rotary cylinder assembly (5) also includes a stepped fixed sleeve (505). Both ends of the adjusting rotary cylinder (503) are fixed with rotary tables (504). The inner end of each set of parallel fixed cylinders (405) is provided with an angle adjustment groove (501). The rotary tables (504) on the same side are screwed to the angle adjustment groove (501). The stepped fixed sleeve (505) is fixed to the outer circle surface of the adjusting rotary cylinder (503). An angle adjustment indicator point (508) is provided on one end face of the adjusting rotary cylinder (503). A set screw thread (512) is installed and fixed in the main body of the adapter (510). A hand-tightening bolt (513) is connected in the set screw thread (512). Both sides of the stepped fixed sleeve (505) are also provided with knurled surfaces (506). It also includes a clamping component (6), which includes a clamping seat (601), a wedge (603), a lever (605), and a shaped compression spring (610). Each set of side connecting arms (401) has a clamping groove (602) horizontally opened at the top. The clamping seat (601) on the same side is elastically slidably connected to the clamping groove (602). The wedge (603) is fixed to the top of the main body of the clamping seat (601). Each set of side connecting arms (401) has a beveled sliding column (604) screwed to the top. The inclined arc surface of the beveled sliding column (604) is connected to the wedge (603). The outer inclined surface is tangentially slidably connected to the side. The top end of the side connecting arm (401) is fixedly installed with a wrench shaft seat (607). A wrench shaft (608) is screwed into the wrench shaft seat (607). The inclined sliding cutting column (604) is fixedly connected to the inner end of the wrench shaft (608). The wrench (605) is fixedly connected to the outer end of the wrench shaft (608). An outer clamping seat (609) is fixed to the outer end of the main body of the pressing seat (601). A special-shaped compression spring (610) is sleeved and installed in the main body of the pressing seat (601), with one end clamped to the outer clamping seat (609) and the other end clamped to the side of the side connecting arm (401).

2. The positioning bending mechanism with a scale according to claim 1, characterized in that: The base component (1) also includes a top slide groove (103), which is opened at the top of the linear slide rail (102). Side slide grooves (104) are opened on both sides of the linear slide rail (102), and a top scale (106) is provided at the top of the linear slide rail (102).

3. The positioning bending mechanism with a scale according to claim 2, characterized in that: The clamping assembly (2) includes a bottom base (201), a retaining clamp seat (202), and a retaining locking bolt (205). The bottom end of the bottom base (201) is fixedly connected to one end of the top sliding groove (103). The retaining clamp seat (202) is screwed onto one side of the top end of the bottom base (201). A retaining wedge seat (203) is fixed to the other side of the bottom end of the retaining clamp seat (202). A retaining threaded part (204) is installed and fixed on the upper part of the main body of the bottom base (201). The retaining locking bolt (205) is connected in the retaining threaded part (204). A retaining sliding wedge seat (206) is slidably connected to the outer inclined surface of the retaining wedge seat (203). The retaining locking bolt (205) passes through the main body of the bottom base (201). The other end of the body is screwed with a retaining sleeve (207); a retaining clamp shaft (208) is inserted and fixed on one side of the top of the bottom base (201), a retaining screw seat (210) is fixed on one side of the bottom of the retaining clamp seat (202), the retaining screw seat (210) is screwed with the retaining clamp shaft (208), a retaining sleeve (209) is fixed in the top groove of the bottom base (201) and the bottom groove of the retaining clamp seat (202), a retaining groove (211) is symmetrically opened on the inclined surface of the outer side of the retaining wedge seat (203), a retaining slider (212) is symmetrically fixed on the inclined surface of the inner side of the retaining sliding wedge seat (206), and the retaining slider (212) on the same side is slidably connected to the retaining groove (211).

4. A positioning bending mechanism with a scale according to claim 2 or 3, characterized in that: The sliding clamp assembly (3) also includes a bottom sliding seat (301), a sliding position clamp seat (302), and a sliding position locking bolt (305). The bottom end of the bottom sliding seat (301) is slidably connected to the other end of the top sliding groove (103). The sliding position clamp seat (302) is screwed onto one side of the top end of the bottom sliding seat (301). A sliding position wedge seat (303) is fixed on the other side of the bottom end of the sliding position clamp seat (302). A sliding position threaded part (304) is installed and fixed on the upper part of the main body of the bottom sliding seat (301). The sliding position locking bolt (305) is connected in the sliding position threaded part (304). A sliding position sliding wedge seat (306) is slidably connected on the outer inclined surface of the sliding position wedge seat (303). A sliding position sleeve is screwed onto the other end of the sliding position locking bolt (305) that passes through the main body of the bottom sliding seat (301). (307) A sliding position clamping shaft (308) is inserted and fixed on one side of the top of the bottom sliding seat (301). A sliding position rotating seat (310) is fixed on one side of the bottom of the sliding position clamping seat (302). The sliding position rotating seat (310) is screwed to the sliding position clamping shaft (308). A sliding position sleeve (309) is fixed in the top groove of the bottom sliding seat (301) and the bottom groove of the sliding position clamping seat (302). A sliding position groove (311) is symmetrically opened on the inclined surface of the outer side of the sliding position wedge seat (303). A sliding position slider (312) is symmetrically fixed on the inclined surface of the inner side of the sliding position sliding wedge seat (306). The sliding position slider (312) on the same side is slidably connected to the sliding position groove (311). A scale indicator line (324) is provided in the middle of the lower end of both sides of the bottom sliding seat (301).

5. A positioning bending mechanism with a scale according to claim 4, characterized in that: The sliding clamp assembly (3) also includes a square slider (314), an internal gear (317), an inner insert block (321), and a preload spring (323). A vertical sliding groove (313) is provided in the main body of the bottom sliding seat (301). The square slider (314) is slidably connected in the vertical sliding groove (313). A tapered positioning post (315) is fixed to the bottom end of the square slider (314). Gear sleeves (316) are fixedly installed on both sides of the vertical sliding groove (313). Sliding grooves (319) are evenly provided on the outer surface of the sliding locking bolt (305). Sliding blocks are evenly fixed in the inner hole of the internal gear (317). 320), the internal gear (317) is slidably connected in the sliding groove (319) through the sliding block (320). Both ends of the internal gear (317) are provided with rotating grooves (318). The rotating groove (318) on the same side is screwed to the inner end of the gear sleeve (316). The top of the square slider (314) is fixed with a follower rack (322). The follower rack (322) meshes with the internal gear (317). The inner insert block (321) passes through the side wall of the vertical sliding groove (313) and is inserted into its inner cavity. One end of the preload spring (323) is locked with the inner insert block (321), and the other end is locked with the square slider (314).

6. A positioning bending mechanism with a scale according to claim 2, 3 or 5, characterized in that: The positioning slide assembly (4) also includes a locking thread (403), a side slider (402) is fixed at the bottom of each set of side connecting arms (401), the side sliders (402) on the same side are slidably connected in the side slide groove (104), the locking thread (403) is installed and fixed in the middle of the side slider (402), a locking bolt (404) is connected in each set of locking thread (403), and a side pointer (406) is also installed and fixed at the lower end of each set of side connecting arms (401).

7. The positioning and bending mechanism with a scale according to claim 1, characterized in that: It also includes a safety locking component (7), which includes a safety sleeve (701), a clearance groove (702) and a top spring (705). Both ends of the safety sleeve (701) are fixed with clearance sliders (704). The clearance groove (702) provided in the main body of the side connecting arm (401) is provided with clearance slide grooves (703) on both sides. The clearance sliders (704) on the same side are slidably connected to the clearance slide grooves (703). One end of the top spring (705) is locked with the safety sleeve (701), and the other end is locked with the bottom end of the clearance groove (702).

8. A device for segmentally bending a spinal column orthosis rod, characterized by: The positioning bending mechanism with a scale as described in any one of claims 1 to 7 is provided, wherein the positioning carriage assembly (4), the rotating cylinder assembly (5), the clamping member (6), and the safety locking member (7) are used in a group arranged in a specific manner.

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