Combined body surface positioning device

Abstract

The utility model provides a combined body surface positioning device, and belongs to the technical field of body surface positioning. The combined body surface positioning device comprises a first longitudinal needle, a second longitudinal needle and a plurality of transverse needles, the diameters of the transverse needles are sequentially decreased from top to bottom, and the diameter of the first longitudinal needle is larger than that of the second longitudinal needle. Through the arrangement of the first longitudinal needle, the second longitudinal needle and the transverse needles, a worker can easily distinguish the relative positions of the wound awl and the first longitudinal needle, the second longitudinal needle and the transverse needles after performing X-ray fluoroscopy, and the first longitudinal needle, the second longitudinal needle and the transverse needles are adjusted, so that the middle transverse needle is located above the wound awl; therefore, the injured vertebrae and the vertebral pedicles of the upper and lower vertebral bodies are positioned more quickly and accurately, the number of times of preoperative X-ray fluoroscopy on a patient is reduced, and compared with the prior art, the radioactive injury on the body of the patient is reduced.

Description

Technical Field

[0001] This utility model relates to the field of body surface positioning technology, and more specifically, to a combined body surface positioning device. Background Technology

[0002] Thoracolumbar vertebral fractures are a common disease, accounting for about 80% of spinal fractures. Surgical treatment is often required to restore spinal stability and prevent fracture displacement, which could lead to or worsen spinal cord injury. Percutaneous pedicle screw fixation is the most common method for spinal fixation. It has been rapidly adopted due to its advantages such as minimizing damage to the stability of the injured vertebra, reducing paraspinal muscle stripping, less intraoperative bleeding, smaller incision, less postoperative incision pain, faster recovery, and easier healing.

[0003] Accurate positioning of the injured vertebra is necessary before surgery, followed by puncture, tapping, and screw placement. Therefore, accurate preoperative positioning is particularly important. Current techniques typically use positioning plates with multiple intersecting longitudinal and transverse lines to locate the injured vertebra. However, this method causes significant image interference, making it difficult to locate the injured vertebra and identify the pedicle. This results in large image interference and unclear images, thereby indirectly increasing the number of X-ray fluoroscopy sessions and the preoperative positioning time. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a combined body surface positioning device that overcomes or at least partially solves the above technical problems.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a combined body surface positioning device, including a first vertical needle, a second vertical needle, and a horizontal needle. The device is characterized in that: there are multiple horizontal needles, and the diameter of the horizontal needles decreases from top to bottom. The diameter of the first vertical needle is larger than the diameter of the second vertical needle. The first vertical needle, the second vertical needle, and each of the horizontal needles are arranged in a crisscross pattern.

[0007] In a preferred embodiment, a first connecting sleeve is slidably sleeved between the first vertical needle, the second vertical needle, the uppermost horizontal needle, and the lowermost horizontal needle, and a second connecting sleeve is slidably sleeved between the first vertical needle, the second vertical needle, and the middle horizontal needle.

[0008] In a preferred embodiment, four fitting blocks are slidably disposed inside the first connecting sleeve. The combined shape of the four fitting blocks is rectangular, and all four fitting blocks are fitted onto the outer surfaces of the horizontal needle and the first and second vertical needles.

[0009] In a preferred embodiment, the first connecting sleeve has four guide grooves inside, and guide blocks are fixedly installed on the rear side of each of the four sleeve blocks, with the guide blocks slidably sleeved inside the guide grooves.

[0010] In a preferred embodiment, a spring is fixedly installed on the inner wall of the guide groove, and the other end of the spring is fixedly connected to the guide block.

[0011] In a preferred embodiment, each of the four sleeve blocks is fixedly equipped with a pressure-bearing ball on its front side. The pressure-bearing ball is hemispherical in shape, and the four pressure-bearing balls are arranged in a rectangular array.

[0012] In a preferred embodiment, a compression ball is slidably disposed inside the first connecting sleeve. The compression ball is spherical in shape and is located between the four pressure-bearing balls. The front side of the compression ball extends through to the front side of the first connecting sleeve.

[0013] The combined body surface positioning device provided by this utility model has the following beneficial effects:

[0014] 1. By setting up a first longitudinal needle, a second longitudinal needle, and a transverse needle, staff can easily distinguish the relative positions of the injured vertebra and the first, second, and transverse needles after X-ray fluoroscopy. By adjusting the first, second, and transverse needles, the transverse needle in the middle is positioned above the injured vertebra, thus making the positioning of the injured vertebra and the pedicles of the vertebrae above and below it faster and more accurate, reducing the number of times the patient needs to undergo preoperative X-ray fluoroscopy, and reducing radiation damage to the patient's body compared with existing technologies. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure provided by an embodiment of the present utility model;

[0017] Figure 2 A partial cross-sectional view of the first connecting sleeve is provided for the embodiment of this utility model;

[0018] Figure 3 A rear-view sectional view of the first connecting sleeve portion is provided for the embodiment of this utility model;

[0019] Figure 4 A schematic diagram is provided for the use of the sleeve block in the embodiment of this utility model.

[0020] In the diagram: 101, first vertical needle; 102, first vertical needle; 2, horizontal needle; 3, first connecting sleeve; 4, second connecting sleeve; 5, sleeve block; 6, guide groove; 7, guide block; 8, spring; 9, pressure ball; 10, compression ball. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figure 1-4 This utility model provides a technical solution: a combined body surface positioning device, including a first vertical needle 101, a second vertical needle 102, and horizontal needles 2. The device is characterized by having multiple horizontal needles 2, with their diameters decreasing sequentially from top to bottom. The diameter of the first vertical needle 101 is larger than that of the second vertical needle 102. The first vertical needle 101, the second vertical needle 102, and each horizontal needle 2 are arranged in a crisscross pattern. By configuring the first vertical needle 101, the second vertical needle 102, and the horizontal needles 2, the number of horizontal needles 2 is at least three. The gradual decrease in diameter of the different horizontal needles 2 from top to bottom, and the fact that the diameter of the first vertical needle 101 is larger than that of the second vertical needle 102, allows the operator to easily distinguish the lesion from the first vertical needle 101 after X-ray fluoroscopy. The relative positions of the first vertical needle 101, the second vertical needle 102, and the transverse needle 2 are adjusted so that the middle transverse needle 2 is positioned above the injured vertebra. The middle transverse needle 2 is positioned as the left-right line connecting the surface projection of the pedicle of the injured vertebra, and the upper and lower transverse needles 2 are positioned as the left-right lines connecting the surface projection of the upper and lower vertebral bodies and pedicles of the injured vertebra. The first vertical needle 101 is positioned as the line connecting the surface projection of the upper and lower vertebral bodies and pedicles on the left side of the injured vertebra, and the second vertical needle 102 is positioned as the line connecting the surface projection of the upper and lower vertebral bodies and pedicles on the right side of the injured vertebra. If a vertebra is added, only one more transverse needle 2 needs to be added. This makes the positioning of the injured vertebra and the upper and lower vertebral bodies and pedicles faster and more accurate, reduces the number of times the patient is subjected to preoperative X-ray fluoroscopy, and reduces the radiation damage to the patient's body compared with existing technologies.

[0023] Reference Figure 1-4The first vertical needle 101 and the second vertical needle 102 are slidably fitted with a first connecting sleeve 3 between the uppermost horizontal needle 2 and the lowermost horizontal needle 2, and the first vertical needle 101, the second vertical needle 102 and the middle horizontal needle 2 are slidably fitted with a second connecting sleeve 4. By setting the first connecting sleeve 3 and the second connecting sleeve 4, the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2 are connected together by the first connecting sleeve 3 and the second connecting sleeve 4, which makes it convenient for staff to store them and avoid them from being scattered and lost.

[0024] Reference Figure 1-4 The first connecting sleeve 3 has four sleeve blocks 5 slidably arranged inside. The combined shape of the four sleeve blocks 5 is rectangular. The four sleeve blocks 5 are all sleeved on the outer surfaces of the horizontal needle 2, the first vertical needle 101, and the second vertical needle 102. By setting the sleeve blocks 5, since the first vertical needle 101, the second vertical needle 102, and the horizontal needle 2 are intersected, the four sleeve blocks 5 are located at the four corners of the intersection. When the four sleeve blocks 5 come close to each other, the friction after the four sleeve blocks 5 come into contact with the first vertical needle 101, the second vertical needle 102, and the horizontal needle 2 limits the first vertical needle 101, the second vertical needle 102, and the horizontal needle 2. The relative positions between the vertical needle 102 and the horizontal needle 2 cannot be changed. When it is necessary to adjust the relative positions between the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2, the four sleeve blocks 5 can be moved away from each other. During X-ray fluoroscopy, the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2 are attached to the patient's back with tape, and with the cooperation of the first connecting sleeve 3, the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2 can be limited and will not move due to slight movement of the patient. After removing the tape, the staff can also easily adjust the positions of the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2.

[0025] Reference Figure 1-4 The first connecting sleeve 3 has four guide grooves 6 inside, and guide blocks 7 are fixedly installed on the rear side of each of the four sleeve blocks 5. The guide blocks 7 are slidably sleeved inside the guide grooves 6. By setting the guide grooves 6 and guide blocks 7, the movement trajectory of the sleeve blocks 5 is restricted due to the fixed connection between the guide blocks 7 and the sleeve blocks 5, so that the sleeve blocks 5 move in a preset direction.

[0026] Reference Figure 1-4 A spring 8 is fixedly installed on the inner wall of the guide groove 6. The other end of the spring 8 is fixedly connected to the guide block 7. By setting the spring 8, the guide block 7 is pressed against one end of the guide groove 6 due to the rebound force of the spring 8, so that the sleeve block 5 is tightly attached to the outer surface of the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2 without being subjected to external force.

[0027] Reference Figure 1-4Each of the four sleeve blocks 5 has a pressure-bearing ball 9 fixedly installed on its front side. The pressure-bearing balls 9 are hemispherical in shape and arranged in a rectangular array. A compression ball 10 is slidably disposed inside the first connecting sleeve 3. The compression ball 10 is spherical in shape and located between the four pressure-bearing balls 9. The front side of the compression ball 10 extends to the front side of the first connecting sleeve 3. By setting the pressure-bearing balls 9 and the compression balls 10, when the operator needs to adjust the relative position between the horizontal needle 2 and the first vertical needle 101 and the second vertical needle 102, the operation... The operator manually presses the squeezing ball 10, causing the squeezing ball 10 to squeeze the pressure ball 9. Through the fixed connection between the pressure ball 9 and the sleeve block 5, the sleeve block 5 moves along the path of the guide groove 6. The direction of the guide groove 6 is the direction after tilting 45 degrees from the midpoint between the four sleeve blocks 5, so that the four sleeve blocks 5 move away from each other, and the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2 are released from contact with the sleeve block 5, making it easier for the operator to adjust the horizontal needle 2 and the first vertical needle 101 and the second vertical needle 102.

[0028] It is worth noting that the number of the second connecting sleeves 4 is adjusted according to the direction of the horizontal needle 2. When the horizontal needle 2 increases, the number of the second connecting sleeves 4 increases accordingly. The first connecting sleeve 3 is always present on the uppermost horizontal needle 2 and the lowermost horizontal needle 2. In order to facilitate the operator to manually press the squeeze ball 10, the number of the first connecting sleeves 3 is always two on the top and two on the bottom.

[0029] Specifically, the working process or principle of this combined body surface positioning device is as follows: During use, the diameter of the horizontal needles 2 gradually decreases from top to bottom, and the diameter of the first vertical needle 101 is larger than that of the second vertical needle 102. This allows the operator to easily distinguish the relative positions of the injury cone, the first vertical needle 101, the second vertical needle 102, and the horizontal needles 2 after X-ray fluoroscopy. When the operator needs to adjust the relative positions of the horizontal needles 2 and the first and second vertical needles 101 and 102, the operator manually presses the compression ball 10, causing the compression ball 10 to compress the pressure ball 9. Through the fixed connection between the pressure ball 9 and the sleeve block 5, the sleeve block 5 moves along the guide groove 6. The path is moved, and the direction of the guide groove 6 is tilted at 45 degrees to the midpoint between the four sleeve blocks 5, so that the four sleeve blocks 5 are moved away from each other, and the first vertical needle 101, the second vertical needle 102 and the horizontal needle 2 are released from contact with the sleeve blocks 5, so that the staff can adjust the horizontal needle 2 and the first vertical needle 101 and the second vertical needle 102, so that the middle horizontal needle 2 is located on the injured vertebra, and the middle horizontal needle 2 is the left and right line connecting the surface projection of the pedicle of the injured vertebra, the upper and lower horizontal needles 2 are the left and right line connecting the surface projection of the upper and lower vertebral bodies and pedicles of the injured vertebra, the first vertical needle 101 is the line connecting the surface projection of the upper and lower vertebral bodies and pedicles on the left side of the injured vertebra, and the second vertical needle 102 is the line connecting the surface projection of the upper and lower vertebral bodies and pedicles on the right side of the injured vertebra.

Claims

1. A combined body surface positioning device, comprising a first vertical needle (101), a second vertical needle (102), and a horizontal needle (2), characterized in that: Multiple horizontal needles (2) are provided, and the diameter of the horizontal needles (2) decreases from top to bottom. The diameter of the first vertical needle (101) is larger than the diameter of the second vertical needle (102). The first vertical needle (101), the second vertical needle (102) and each of the horizontal needles (2) are arranged in a crisscross manner.

2. The combined body surface positioning device according to claim 1, characterized in that, A first connecting sleeve (3) is slidably sleeved between the first vertical needle (101), the second vertical needle (102), the uppermost horizontal needle (2), and the lowermost horizontal needle (2), and a second connecting sleeve (4) is slidably sleeved between the first vertical needle (101), the second vertical needle (102), and the middle horizontal needle (2).

3. The combined body surface positioning device according to claim 2, characterized in that, The first connecting sleeve (3) has four sleeve blocks (5) slidably arranged inside. The shape of the four sleeve blocks (5) after combination is set as a rectangle. The four sleeve blocks (5) are all sleeved on the outer surface of the horizontal needle (2) and the first vertical needle (101) and the second vertical needle (102).

4. The combined body surface positioning device according to claim 3, characterized in that, The first connecting sleeve (3) has four guide grooves (6) inside, and guide blocks (7) are fixedly installed on the rear side of the four sleeve blocks (5). The guide blocks (7) are slidably sleeved inside the guide grooves (6).

5. The combined body surface positioning device according to claim 4, characterized in that, A spring (8) is fixedly installed on the inner wall of the guide groove (6), and the other end of the spring (8) is fixedly connected to the guide block (7).

6. The combined body surface positioning device according to claim 3, characterized in that, Each of the four sleeve blocks (5) has a pressure-bearing ball (9) fixedly installed on its front side. The pressure-bearing ball (9) is hemispherical in shape and the four pressure-bearing balls (9) are arranged in a rectangular array.

7. The combined body surface positioning device according to claim 6, characterized in that, The first connecting sleeve (3) has a slidable extrusion ball (10) inside. The extrusion ball (10) is spherical in shape and is located between the four pressure bearing balls (9). The front side of the extrusion ball (10) extends to the front side of the first connecting sleeve (3).

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