A thoracolumbar vertebral fracture pedicle screw angle measuring instrument

Abstract

The utility model belongs to the thoracolumbar fracture operation field especially a thoracolumbar fracture pedicle screw angle measuring instrument, aiming at the operation of the existing angle adjustment may not be simple enough, the angle adjustment fixed sometimes is not enough stable, is easy to deviate in the operation, in addition, the adaptability of this kind of tool sometimes is insufficient, limits its application in different operation environment problem, the present application proposes the following scheme, it includes arc block, the inner hole for pedicle screw insertion is set up on the arc block, the both ends bottom corner of arc block is provided as arc, the both sides of arc block are fixed and are provided with the connecting mechanism for connecting with outside equipment, can adapt to the connecting demand of different outside equipment, has improved the versatility and applicability of instrument, has conveniently used in different scenes, and ensures that the pedicle screw insertion angle remains unchanged in the operation process, has improved the precision and safety of operation.

Description

Technical Field

[0001] This utility model relates to the field of surgical technology for thoracic and lumbar vertebral fractures, and in particular to an angle measuring instrument for pedicle screws in thoracic and lumbar vertebral fractures. Background Technology

[0002] In thoracic and lumbar vertebral fracture surgery, accurate placement of pedicle screws is crucial for surgical success and patient recovery. The placement angle of the pedicle screws needs to be strictly controlled. Existing equipment is not easy to operate when adjusting the angle, and the fixation after angle adjustment is sometimes not stable enough and is prone to displacement during operation. In addition, the adaptability of these tools is insufficient, which limits their application in different surgical environments. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as inconvenient operation when adjusting the angle, insufficient stability of the fixation after angle adjustment, easy deviation during operation, and insufficient adaptability of such tools, which limits their application in different surgical environments. Therefore, this invention proposes an angle measuring instrument for pedicle screws in thoracic and lumbar vertebral fractures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An angle measuring instrument for pedicle screws in thoracic and lumbar vertebral fractures includes an arc-shaped block with an inner hole for inserting the pedicle screw. The bottom corners at both ends of the arc-shaped block are arc-shaped. Connecting mechanisms for connecting to external devices are fixedly provided on both sides of the arc-shaped block. An insertion mechanism for assisting the insertion angle of the pedicle screw is provided on the arc-shaped block, and a fixing mechanism for fixing the insertion mechanism is provided on the insertion mechanism.

[0006] In one possible design, the connecting mechanism includes two connecting rods, two inner rods, two fixed posts, and two connecting blocks. One end of each of the two connecting rods is fixedly connected to both sides of the arc-shaped block. An inner groove is formed on the side of each connecting rod that is far apart from the other. One end of each of the two inner rods extends into the interior of the two inner grooves and is slidably connected to the inner grooves. The other end of each of the two inner rods is fixedly connected to one side of each of the two connecting blocks. Each of the two connecting blocks has multiple fixing holes for fixing to external equipment. One end of each of the two fixed posts is threaded through the top of the two connecting rods and is tightly attached to the top of the two inner rods. The other end of each of the two fixed posts is fixedly connected to a rotating handle for rotating the fixed post.

[0007] In one possible design, the insertion mechanism includes two cylinders, two sliders, and two grooves. The cylinders are located inside the inner hole, with the bottom edge of the cylinders being arc-shaped and the top inner wall edge of the cylinders being arc-shaped. The two sliders are fixedly connected to both sides of the same cylinder, and the two grooves are respectively disposed on the inner walls of both sides of the same inner hole and respectively engage with the two sliders. The two sliders are slidably connected to the two grooves respectively.

[0008] In one possible design, the fixing mechanism includes a sleeve block, two electric telescopic rods, and two fitting blocks. The sleeve block is fixedly sleeved on the cylinder, and the bottom of the sleeve block fits into the top of the arc-shaped block. The fixed ends of the two electric telescopic rods are respectively fixedly connected to both sides of the same sleeve block, and the telescopic ends of the two electric telescopic rods are respectively fixedly connected to one side of the two fitting blocks. The adjacent sides of the two fitting blocks are respectively fitted into both sides of the same arc-shaped block.

[0009] In one possible design, rubber pads are fixedly provided on the adjacent sides of both of the bonding blocks to facilitate tight contact with the curved block.

[0010] In one possible design, scale lines are fixedly provided on both sides of the arc-shaped block to facilitate observation of the pedicle screw insertion angle, and the shape of both fitting blocks is set to be conical to facilitate indication of the scale lines.

[0011] In this application, during operation, the device is connected and fixed to an external device via a connecting mechanism. During connection, depending on the specific situation of the external device, the rotating handle on the fixed column is rotated so that the fixed column is no longer tightly attached to the top of the inner rod. At this time, the inner rod can slide in the inner groove of the connecting rod, adjusting the length of the inner rod extending out of the connecting rod, thereby adjusting the overall length of the connecting mechanism. After the length is appropriate, the rotating handle is rotated again so that the fixed column is tightly attached to the top of the inner rod, fixing the position of the inner rod, thereby securing the connecting mechanism to the external device.

[0012] When it is necessary to insert a pedicle screw, the pedicle screw is inserted into the cylinder. The bottom edge and the top inner wall edge of the cylinder are arc-shaped to facilitate the smooth insertion of the pedicle screw. Medical staff can push the cylinder according to the needs of the operation. The sliders on both sides of the cylinder slide in the grooves on the inner walls of the arc-shaped block, so that the cylinder moves in the inner hole, thereby adjusting the insertion angle of the pedicle screw. During the adjustment process, medical staff can observe the scale lines on both sides of the arc-shaped block. The tips of the two conical fitting blocks can accurately indicate the scale lines, which makes it convenient for medical staff to accurately grasp the insertion angle of the pedicle screw.

[0013] Once the insertion angle of the pedicle screw is determined, the electric telescopic rod is activated. The electric telescopic rod receives instructions from an external controller via wireless signal and is powered by an external power source. The telescopic end of the electric telescopic rod retracts, causing the apposition block to move closer to the arc-shaped block until the apposition block and the arc-shaped block are in contact on both sides. Because there are rubber pads fixed on the apposition block, the friction between the apposition block and the arc-shaped block is increased, making the fit tighter and thus fixing the position of the cylinder, ensuring a stable insertion angle of the pedicle screw for subsequent surgical procedures.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this invention, the adjustable length design of the connecting mechanism allows it to adapt to the connection needs of different external devices, improving the instrument's versatility and applicability, and making it convenient for use in different scenarios.

[0016] The cooperation between the slider and the groove allows the cylinder to move flexibly, making it easy for medical staff to precisely adjust the insertion angle of the pedicle screw according to the needs of the operation. The fixation mechanism uses an electric telescopic rod to drive the fitting block to fit with the arc-shaped block, which can quickly and stably fix the position of the cylinder, ensuring that the insertion angle of the pedicle screw remains unchanged during the operation, thus improving the precision and safety of the operation. The rubber pad on the fitting block further enhances the fixation effect and prevents the cylinder from moving during the operation.

[0017] The markings on both sides of the arc-shaped block and the indication of the markings by the conical tip of the fitting block provide medical staff with an intuitive angle reference, enabling them to more accurately adjust the insertion angle of the pedicle screw, which helps to improve the success rate of the operation and the patient's recovery. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a partial exploded view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixing structure of this utility model.

[0022] In the diagram: 1. Arc-shaped block; 2. Inner hole; 3. Cylinder; 4. Scale line; 5. Connecting block; 6. Fixing hole; 7. Slide groove; 8. Sleeve block; 9. Sliding block; 10. Connecting rod; 11. Inner rod; 12. Fixing column; 13. Electric telescopic rod; 14. Adhesive block; 15. Rubber pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In one embodiment: Refer to Figures 1-4 An angle measuring instrument includes an arc-shaped block 1 with an inner hole 2 for pedicle screw insertion. The bottom corners of both ends of the arc-shaped block 1 are designed to be arc-shaped to reduce damage to the patient during fitting. The arc-shaped block 1 has connecting mechanisms on both sides for connection and fixation with external devices. The connecting mechanisms include two connecting rods 10, two inner rods 11, two fixing posts 12, and two connecting blocks 5. One end of each of the two connecting rods 10 is fixed to both sides of the arc-shaped block 1, and the other end has an inner groove. One end of each of the two inner rods 11 extends into the inner groove and can slide, while the other end is fixed to the two connecting blocks 5. The connecting blocks 5 have multiple fixing holes 6 for easy fixation with external devices. One end of each of the two fixing posts 12 is threaded through the top of the connecting rod 10 and is tightly attached to the top of the inner rod 11. The other end is fixed with a rotating handle. Rotating the rotating handle can fix the inner rod 11 in the inner groove, thereby adjusting the length of the connecting mechanism to adapt to the connection needs of different external devices.

[0025] The arc-shaped block 1 is also equipped with an insertion mechanism to assist in the insertion of the pedicle screw. It includes two cylinders 3, two sliders 9, and two grooves 7. The cylinders 3 are placed inside the inner hole 2. The bottom edge and the top inner wall edge are arc-shaped to facilitate the insertion of the pedicle screw. The two sliders 9 are fixed on both sides of the cylinder 3. The two grooves 7 are respectively located on the inner walls of both sides of the inner hole 2 and fit with the sliders 9. The sliders 9 can slide in the grooves 7, so that the cylinders 3 can move in the inner hole 2 to adjust the insertion angle of the pedicle screw.

[0026] The insertion mechanism is equipped with a fixing mechanism for fixing the insertion mechanism, including a sleeve block 8, two electric telescopic rods 13 and two fitting blocks 14. The sleeve block 8 is fixedly sleeved on the cylinder 3, and its bottom fits with the outer top of the arc-shaped block 1. The fixed ends of the two electric telescopic rods 13 are respectively fixed on both sides of the sleeve block 8, and the telescopic ends are respectively fixed to the two fitting blocks 14. When it is necessary to fix the position of the cylinder 3, the electric telescopic rods 13 are activated, so that their telescopic ends retract, driving the fitting blocks 14 to move closer to the arc-shaped block 1 until the fitting blocks 14 fit with both sides of the arc-shaped block 1, thereby fixing the position of the cylinder 3 and ensuring the stability of the pedicle screw insertion angle.

[0027] This application can be used in the field of pedicle screw fixation for thoracic and lumbar vertebral fractures, and can also be used in other fields applicable to this application.

[0028] In another embodiment: Reference Figures 1-4 An angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures, comprising:

[0029] To enhance the bonding effect between the bonding block 14 and the arc-shaped block 1, rubber pads 15 are fixed on the side of the two bonding blocks 14 that are close to each other. The rubber pads 15 can increase the friction, making the bonding tighter and the fixation more secure.

[0030] The arc-shaped block 1 is also equipped with scale lines 4 on both sides to facilitate observation of the pedicle screw insertion angle. The two fitting blocks 14 are cone-shaped, and the cone tips can accurately indicate the scale lines 4, which makes it convenient for medical staff to accurately adjust the pedicle screw insertion angle according to the scale lines 4, thereby improving the accuracy and safety of the operation.

[0031] However, as is well known to those skilled in the art, the working principle and wiring method of the electric telescopic rod 13 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience. The electric telescopic rod 13 is connected to an external controller via wireless signal and is powered by an external power source. After the equipment is used, it can be placed in the sterilization chamber of a low-temperature plasma sterilizer and sterilized according to the sterilizer's operating instructions.

[0032] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures, characterized in that, The device includes an arc-shaped block (1), which has an inner hole (2) for inserting a pedicle screw. The bottom corners of both ends of the arc-shaped block (1) are arc-shaped. Connecting mechanisms for connecting with external devices are fixedly provided on both sides of the arc-shaped block (1). An insertion mechanism for assisting the insertion angle of the pedicle screw is provided on the arc-shaped block (1). A fixing mechanism for fixing the insertion mechanism is provided on the insertion mechanism.

2. The angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures according to claim 1, characterized in that, The connecting mechanism includes two connecting rods (10), two inner rods (11), two fixed posts (12), and two connecting blocks (5). One end of each of the two connecting rods (10) is fixedly connected to both sides of the arc-shaped block (1). An inner groove is provided on the side of each of the two connecting rods (10) that is far apart from each other. One end of each of the two inner rods (11) extends into the interior of the two inner grooves and is slidably connected to the inner grooves. The other end of each of the two inner rods (11) is fixedly connected to one side of each of the two connecting blocks (5). Multiple fixing holes (6) are provided on each of the two connecting blocks (5) to facilitate fixing to external equipment. One end of each of the two fixed posts (12) is threaded through the top of the two connecting rods (10) and is tightly attached to the top of the two inner rods (11). The other end of each of the two fixed posts (12) is fixedly connected to a rotating handle to facilitate the rotation of the fixed post (12).

3. The angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures according to claim 1, characterized in that, The insertion mechanism includes two cylinders (3), two sliders (9) and two grooves (7). The cylinders (3) are located inside the inner hole (2). The bottom edge of the cylinder (3) is set to be arc-shaped, and the top inner wall edge of the cylinder (3) is set to be arc-shaped. The two sliders (9) are fixedly connected to the two sides of the same cylinder (3). The two grooves (7) are respectively set on the inner walls of the two sides of the same inner hole (2) and respectively fit with the two sliders (9). The two sliders (9) are slidably connected to the two grooves (7).

4. The angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures according to claim 1, characterized in that, The fixing mechanism includes a sleeve block (8), two electric telescopic rods (13) and two fitting blocks (14). The sleeve block (8) is fixedly sleeved on the cylinder (3). The bottom of the sleeve block (8) fits with the top of the arc block (1). The fixed ends of the two electric telescopic rods (13) are respectively fixedly connected to both sides of the same sleeve block (8). The telescopic ends of the two electric telescopic rods (13) are respectively fixedly connected to one side of the two fitting blocks (14). The sides of the two fitting blocks (14) that are close to each other are respectively fitted to both sides of the same arc block (1).

5. The angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures according to claim 4, characterized in that, Both of the two bonding blocks (14) are fixedly provided with rubber pads (15) on the side that are close to each other, so as to make them fit tightly against the arc block (1).

6. The angle measuring instrument for pedicle screws in thoracolumbar vertebral fractures according to claim 4, characterized in that, Both sides of the arc-shaped block (1) are fixed with scale lines (4) to facilitate the observation of the pedicle screw insertion angle, and the two fitting blocks (14) are both set in a cone shape to facilitate the indication of the scale lines (4).

Images