Positioning ball for adjusting angle of puncture needle

Abstract

The utility model discloses a positioning ball for adjusting the angle of a puncture needle, which is characterized by comprising a ball body and a tension bolt, a through hole penetrating through the ball body is arranged on the ball body, the upper section of the through hole is an expansion hole in the shape of an inverted circular truncated cone, the lower section of the through hole is a straight hole, a connecting cap is arranged in the ball body, and the connecting cap is arranged at the straight hole section of the through hole. The expansion bolt comprises an expansion head and a connecting part, the expansion head is an inverted circular truncated cone body with a large upper part and a small lower part, the inverted circular truncated cone body-shaped expansion head can be clamped in the expansion hole, the connecting part is provided with a connecting thread which can be in threaded connection with the connecting cap, and the expansion head can move downwards by rotating the expansion bolt so that the expansion head can move downwards. Along with the increase of the volume of the tensioning head, the expansion hole is extruded to expand outwards, then the volume of the ball body is increased, the outer surface of the ball body expands outwards, and a puncture needle hole is formed in the axis of the tensioning bolt.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a positioning ball for adjusting the angle of a puncture needle. Background Technology

[0002] Percutaneous puncture is a medical technique that uses medical imaging equipment (such as CT, MRI, PET, and ultrasound) to directly puncture specific human structures through the skin with a fine needle under the guidance of the imaging equipment, and to perform related disease diagnosis and treatment procedures.

[0003] The origins of percutaneous biopsy can be traced back to the early 20th century, but with the development of medical imaging, especially the advancements in imaging technologies such as CT, MRI, and PET, this technique has been greatly promoted and developed. For example, in the diagnosis and treatment of lung diseases, percutaneous lung biopsy can greatly improve the accuracy of diagnosing lung space-occupying lesions, and the ablation and radioactive particle implantation therapy performed through percutaneous lung biopsy can achieve treatment effects similar to those of surgery, while also being characterized by minimal invasiveness, shorter treatment time for patients, and lower economic burden.

[0004] Compared to surgical procedures, the operator cannot observe the trajectory of the puncture needle in real time due to the obstruction of the skin and other body surface structures. Although the puncture angle and path can be measured and planned on images such as CT, MRI, and PET before the procedure, and the puncture needle path and angle can be compared and corrected through repeated image scans, changes in the patient's breathing amplitude and body position during the procedure can affect the above planning. Moreover, manual operation heavily relies on the operator's clinical experience. Young doctors often fail to control the angle and puncture path of the puncture needle, leading to accidental puncture into normal tissue structures (such as blood vessels, trachea, digestive tract, and nerves), causing complications such as pneumothorax, bleeding, and perforation. At the same time, multiple CT scans and other radiological images undoubtedly increase the patient's medical radiation dose. Therefore, how to accurately control the angle and puncture path of the puncture needle has become the main technical challenge of percutaneous puncture technique.

[0005] CN219021450U discloses a puncture needle fixation plate with adjustable aperture. The technical solution disclosed in this patent is to adapt to puncture needles of different thicknesses and puncture angles by changing the angle of the support plate body by replacing the puncture aperture adjustment column. When multiple punctures are required during surgery, it cannot meet the needs of adjusting the puncture angle of different puncture needles.

[0006] Therefore, the applicant proposed a positioning ball for adjusting the angle of the puncture needle, which is simple in structure, convenient for adjusting the puncture angle, flexible in adjustment, easy to operate, and accurate in positioning. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to provide a positioning ball that is simple in structure, easy to use, highly adaptable, and allows for easy adjustment of the puncture needle angle.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A positioning ball for adjusting the angle of a puncture needle, characterized in that: it comprises a ball body (2-1) and a tensioning bolt; the ball body (2-1) has a through hole (2-10) penetrating the ball body (2-1); the upper section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole; a connecting cap (2-3) is provided inside the ball body (2-1); the connecting cap (2-3) is located in the straight hole section of the through hole (2-10); the tensioning bolt comprises a tensioning head (2-2) and a connecting part (2-14); the tensioning head (2-2) is larger at the top and smaller at the bottom. The inverted frustum-shaped tension head (2-2) can be engaged in the expansion hole (2-5). The connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected to the connecting cap (2-3). By rotating the tension bolt, the tension head (2-2) can be moved downward. As the volume of the tension head (2-2) increases, it squeezes the expansion hole (2-5) and causes it to expand outward. This, in turn, increases the volume of the ball body (2-1) and causes the outer surface of the ball body (2-1) to expand outward. The axis of the tension bolt is provided with a puncture needle hole (2-13).

[0010] That is, one section of the cross-section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum with an upper cross-sectional area greater than the lower cross-sectional area, that is, the upper volume of the frustum is greater than the lower volume, and the other section is a straight hole;

[0011] The tightening head of the tightening bolt is an inverted frustum with an upper cross-sectional area larger than the lower cross-sectional area. The side slope of the inverted frustum-shaped tightening head (2-2) is the same as the side slope of the inverted frustum part of the expansion hole (2-5), but the upper and lower cross-sectional areas are both larger than the upper and lower cross-sectional areas of the expansion hole (2-5). That is, the two are different segments of the same inverted frustum, so their sides can fit together, but the former has a larger volume than the latter.

[0012] The axes of the through hole (2-10), the puncture needle hole (2-13), and the connecting part (2-14) coincide.

[0013] As an improvement, the sphere body (2-1) is made of a soft material, and when the center is compressed, the outside will expand to the periphery.

[0014] As an improvement, the tensioning head (2-2) is provided with a wrench (2-4), which is one of an internal hexagonal wrench, a flat wrench, a cross wrench, or an internal polygonal wrench.

[0015] As an improvement, there are several tensioning bolts, and the diameter of the puncture needle hole (2-13) of each tensioning bolt is different. Tensioning bolts with different hole diameters can use puncture needles of different thicknesses.

[0016] As an improvement, the ball body (2-1) includes ball body A (2-6) and ball body B (2-7). When ball body A (2-6) and ball body B (2-7) are joined together to form a ball, and are connected to the connecting cap (2-3) by a tension bolt, ball body A (2-6) and ball body B (2-7) can move in the radial direction of the tension bolt.

[0017] As a further improvement, the ball body A (2-6) is hemispherical, with a locking part (2-8) at its lower part. The locking part (2-8) has a nut insertion groove (2-9) in the middle, and the connecting cap (2-3) can be inserted into the nut insertion groove (2-9). The axial center of the ball body A (2-6) has a through hole groove A. The ball body B (2-7) is hemispherical, with a locking part (2-8) at its lower part. The locking part (2-8) of the ball body A (2-6) can be inserted into the locking part of the ball body B (2-7), so that the ball body A (2-6) and the ball body B (2-7) form a spherical ball body (2-1).

[0018] As a further improvement, a support base (2-11) is provided at the lower part of the ball body B (2-7), and the ball body A (2-6) is placed on the support base (2-11) and hugs the ball body B (2-7).

[0019] Compared with the prior art, this utility model has the advantages of simple structure, convenient use and strong adaptability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the puncture angle positioning device (I).

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the puncture angle positioning device (II).

[0022] Figure 3 This is a cross-sectional structural diagram of the positioning ball and the fixed frame plate.

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the positioning ball in Example 7.

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the positioning ball in Example 7.

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the positioning ball body in Example 7.

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the positioning ball body in Example 7.

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the fastening bolt in Example 7.

[0028] Figure 9 This is a schematic diagram of the three-dimensional structure of the fastening nut in Example 7.

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the positioning ball in Example 8.

[0030] Figure 11 This is a schematic diagram of the cross-sectional structure of the positioning ball in Example 8.

[0031] Figure 12 This is a schematic diagram of the three-dimensional structure of the positioning ball body A in Example 8.

[0032] Figure 13 This is a schematic diagram of the three-dimensional structure of the positioning ball body B in Example 8.

[0033] Figure 14 This is a schematic diagram of the three-dimensional structure of the angle fixing device in Embodiment 9.

[0034] Figure 15 This is a three-dimensional structural diagram (II) of the angle fixing device in Example 9.

[0035] Figure 16 This is a schematic diagram (III) of the three-dimensional structure of the angle fixing device in Example 9.

[0036] Figure 17 This is a schematic diagram of the three-dimensional structure of the angle measuring mechanism in Example 9.

[0037] Figure 18 This is a three-dimensional structural diagram of the positioning ball screwing mechanism in Example 9.

[0038] Figure 19 This is a cross-sectional view of the positioning ball screwing mechanism in Example 9.

[0039] As shown in the figure:

[0040] 1 is the fixed frame plate, 1-1 is the positioning ball mounting slot, 1-2 is the frame plate fixing bolt, 1-3 is frame plate A, 1-4 is frame plate B, and 1-5 is the connecting frame.

[0041] 2 is the positioning ball; 2-1 is the ball body; 2-2 is the tensioning head; 2-3 is the connecting cap; 2-4 is the wrench; 2-5 is the expansion hole; 2-6 is ball body A; 2-7 is ball body B; 2-8 is the engaging part; 2-9 is the nut insertion groove; 2-10 is the through hole; 2-11 is the support base; 2-12 is the connecting thread; 2-13 is the piercing needle hole; 2-14 is the connecting part.

[0042] 3 is the positioning ball screwing mechanism, 3-1 is the handle, 3-2 is the wrench, 3-3 is the groove, and 3-4 is the positioning guide wire hole.

[0043] 4 is the angle measuring mechanism, 4-1 is the angle gauge mounting frame, 4-2 is the positioning guide wire, and 4-3 is the connecting part B.

[0044] 5 is the angle gauge, and 6 is the puncture needle. Detailed Implementation

[0045] The following embodiments further illustrate the above-described content of the present invention in detail. Obviously, the described embodiments are merely a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0046] Example 1: Refer to Figures 1-3 This is a structural schematic diagram of Embodiment 1 of the present utility model. Embodiment 1 discloses a positioning device for adjusting the angle of a puncture needle, including a fixed frame plate (1) and a positioning ball screwing mechanism (3). The fixed frame plate (1) is provided with an embedding hole, in which a positioning ball for adjusting the angle of the puncture needle can be embedded. The positioning ball for adjusting the angle of the puncture needle includes a ball and a tension bolt. The tension bolt can press the ball into the embedding hole of the fixed frame plate (1). By rotating the tension bolt on the positioning ball through the positioning ball screwing mechanism (3), the space volume occupied by the ball body (2-1) can be expanded or reduced, that is, the ball body (2-1) can be expanded or reduced. The expanded ball body (2-1) is pressed into the embedding hole of the fixed frame plate (1), so that the fixed ball body (2-1) will not rotate in the embedding hole.

[0047] In this embodiment, the embedding hole is the positioning ball mounting slot hole 1-1.

[0048] In actual use: the positioning ball for adjusting the angle of the puncture needle is embedded in the fixed frame plate (1), and the positioning ball for adjusting the angle of the puncture needle is pressed into the embedding hole of the fixed frame plate (1) by rotating the tension bolt. The positioning ball for adjusting the angle of the puncture needle is provided with puncture needle holes (2-13), which can facilitate the passage of the puncture needle (6).

[0049] Example 2: Compared with Example 1, the difference in this example is that the fixed frame plate (1) includes frame plate A (1-3) and frame plate B (1-4). Frame plate A (1-3) and frame plate B (1-4) are provided with corresponding positioning ball mounting slots (1-1). As required, a number of positioning balls are placed on the positioning ball mounting slots (1-1) of frame plate A (1-3) and aligned with frame plate B (1-4). After being fixed by the frame plate fixing bolts (1-2), the positioning balls are embedded in the positioning ball mounting slots and will not slide out from either side of the fixed frame plate (1).

[0050] In actual use: The mounting holes on the frame plate A (1-3) and the frame plate B (1-4) are arc-shaped holes. When the frame plate A (1-3) and the frame plate B (1-4) are fastened together, the positioning ball can be placed in the embedded hole and will not slide out of the hole.

[0051] Example 3: Compared with Example 1, the difference in this example is that the positioning ball screwing mechanism (3) includes a wrench (3-2) and a handle (3-1). The handle (3-1) and the wrench (3-2) are connected in an "L" shape. The wrench (3-2) can be engaged in the wrench mouth (2-4) and drive the tensioning bolt to rotate through the handle (3-1). The handle (3-1) and the wrench (3-2) are provided with positioning guide wire holes (3-4) through which the positioning guide wire (4-2) can pass.

[0052] In actual use: The tensioning bolt is equipped with a wrench (2-4), and the wrench head (3-2) is engaged in the wrench (2-4) to drive the tensioning bolt to rotate.

[0053] Example 4: Compared with Example 3, the difference in this example is that the wrench head (3-2) is a hollow structure with a "C" shaped cross-section, that is, the wrench head is a hollow multi-faceted prism, and the surface of the wrench head (3-2) is provided with a groove (3-3).

[0054] In actual use: the puncture needle (6) is placed in the puncture needle hole (2-13) of the tensioning bolt, and the puncture needle (6) can be moved into the wrench (3-2) through the slot (3-3).

[0055] Example 5: Compared with Example 4, the difference in this example is that an angle measuring mechanism (4) is also provided. The angle measuring mechanism (4) includes an angle measuring instrument mounting bracket (4-1) and a positioning guide wire (4-2). The angle measuring instrument mounting bracket (4-1) is used to install the angle measuring instrument. The positioning guide wire is located on one side of the mounting bracket (4-1), and the positioning guide wire is coaxial or parallel to the horizontal measuring axis of the angle measuring instrument installed in the angle measuring instrument mounting bracket (4-1). That is, the actual angle between the positioning guide wire and the horizontal plane is consistent with the angle between the angle measuring instrument and the horizontal plane. The positioning guide wire (4-2) can pass through the positioning guide wire hole (3-4) of the handle (3-1), so that the angle measuring mechanism (4) and the positioning ball screwing mechanism (3) form a whole.

[0056] In actual use: The angle meter is an electronic angle meter, which is a commercially available product. The angle meter is directly installed in the angle meter mounting bracket (4-1). The angle measuring mechanism (4) and the positioning ball screwing mechanism (3) are combined. The positioning guide wire is inserted into the puncture needle hole (2-13) or the puncture needle sheath of the positioning ball (2). The angle of the positioning guide wire (4-2), that is, the angle of the puncture needle hole (2-13) or the puncture needle, is determined by the angle meter. After fixing the positioning ball (2) with the positioning ball screwing mechanism (3), the angle measuring mechanism (4) and the positioning ball screwing mechanism (3) are removed. Then, the puncture needle (6) is passed through the positioning ball to achieve puncture.

[0057] There are two situations when using an angle measuring mechanism to fix the tension bolt:

[0058] When the puncture needle (6) is not inserted into the through hole of the tension bolt, combine the angle measuring mechanism (4) and the positioning ball screwing mechanism (3), insert the positioning guide wire (4-2) into the puncture needle hole (2-13) of the positioning ball (2), and align the wrench (3-2) with the wrench mouth (2-4). After determining the angle, use the handle (3-1) to drive the tension bolt into the through hole (2-10) of the positioning ball 2 and fix the positioning ball.

[0059] When the tension bolt through hole has been inserted into the puncture needle (6), the needle core of the puncture needle can be pulled out first (the puncture needles used in reality all include an outer needle sleeve and an inner pillow core. The puncture needle (6) in the figure is not designed in this patent and is only used for display, so the pillow core and needle sleeve are not subdivided). Combine the angle measuring mechanism (4) and the positioning ball screwing mechanism (3), insert the positioning guide wire (4-2) into the needle sleeve of the puncture needle 6, and at the same time make the wrench head (3-2) and the wrench mouth (2-4) align. After determining the angle, use your hand (3-1) to drive the tension bolt to screw into or out of the through hole (2-10) of the positioning ball 2, thereby fixing or loosening the positioning ball.

[0060] Example 6: Compared with Example 1, the difference in this example is that a positioning ball for adjusting the angle of the puncture needle is used, comprising a ball body (2-1) and a tensioning bolt. The ball body (2-1) has a through hole (2-10) penetrating the ball body (2-1). The upper section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole. A connecting cap (2-3) is provided inside the ball body (2-1). The connecting cap (2-3) is located in the straight hole section of the through hole (2-10). The tensioning bolt comprises a tensioning head (2-2) in the shape of an inverted frustum and a connecting part (2-1). 4) The tensioning head (2-2) is provided with a wrench (2-4), and the connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected with the connecting cap (2-3). By rotating the tensioning bolt, the tensioning head (2-2) can be pressed into the expansion hole (2-5) of the through hole (2-10). The ball body (2-1) is made of soft material. By the tensioning head (2-2) pressing the ball body (2-1), the volume of the ball body (2-1) increases, and the outer surface of the ball body (2-1) expands outward. The axis of the tensioning bolt is provided with a piercing needle hole (2-13).

[0061] The tensioning bolts are provided in several parts, and the diameter of the puncture needle hole (2-13) of each tensioning bolt is different. Tensioning bolts with different hole diameters can use puncture needles of different thicknesses.

[0062] Example 6: Compared with Example 1, the difference in this example is that a positioning ball for adjusting the angle of the puncture needle is used, comprising a ball body (2-1) and a tensioning bolt. The ball body (2-1) comprises ball body A (2-6) and ball body B (2-7). After the ball body A (2-6) and ball body B (2-7) are joined together to form a sphere, a through hole (2-10) is provided on the ball body (2-1). The upper section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole. A connecting cap is provided inside the ball body (2-1). (2-3) The connecting cap (2-3) is provided in the straight section of the through hole (2-10). The tensioning bolt includes a tensioning head (2-2) in the shape of an inverted frustum and a connecting part (2-14). The connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected to the connecting cap (2-3). By rotating the tensioning bolt, the tensioning head (2-2) can be moved downward and pressed into the expansion hole (2-5) of the through hole (2-10), thereby pushing the ball body A (2-6) and the ball body B (2-7) to expand to both sides. The axis of the tensioning bolt is provided with a piercing needle hole (2-13).

[0063] The tensioning bolts are provided in several parts, and the diameter of the puncture needle hole (2-13) of each tensioning bolt is different. Tensioning bolts with different hole diameters can use puncture needles of different thicknesses.

[0064] Example 7: Refer to Figures 4-9 This is a schematic diagram of the structure of Embodiment 7 of the present invention. This embodiment discloses a positioning ball for adjusting the angle of a puncture needle, comprising a ball body (2-1) and a tensioning bolt. The ball body (2-1) has a through hole (2-10) penetrating the ball body (2-1). The upper section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole. A connecting cap (2-3) is provided inside the ball body (2-1). The connecting cap (2-3) is located in the straight hole section of the through hole (2-10). The tensioning bolt includes a tensioning head (2-2) and a connecting part (2-14). 2) It is an inverted frustum-shaped body with a larger upper part and a smaller lower part. The inverted frustum-shaped tension head (2-2) can be engaged in the expansion hole (2-5). The connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected to the connecting cap (2-3). By rotating the tension bolt, the tension head (2-2) can be moved downward. As the volume of the tension head (2-2) increases, it squeezes the expansion hole (2-5) and causes it to expand outward. This, in turn, increases the volume of the ball body (2-1) and causes the outer surface of the ball body (2-1) to expand outward. The axis of the tension bolt is provided with a puncture needle hole (2-13).

[0065] In actual use: The ball body (2-1) has a certain elasticity. The ball body (2-1) is placed in the embedding hole, and the volume of the ball body (2-1) is changed by tightening the bolt, so that the ball body (2-1) is squeezed on the frame plate. After being squeezed, the ball body (2-1) can be relatively fixed with the frame plate and will not rotate in the embedding hole, thus achieving a fixed puncture angle.

[0066] As an improvement to this embodiment, the tensioning head (2-2) is provided with a wrench (2-4), and the wrench (2-4) is an internal hexagonal wrench.

[0067] In actual use: the tensioner head has an internal hexagonal wrench for easy tightening.

[0068] As a further improvement of this embodiment, there are several tension bolts, and the diameter of the puncture needle hole (2-13) of each tension bolt is different. Tension bolts with different hole diameters can use puncture needles of different thicknesses.

[0069] In actual use: the size of the tensioning bolt is fixed, but the fixed needle hole (3-4) of its axis is different. By changing the tensioning bolt with different fixed needle holes (3-4), it can adapt to the operation of puncture needles (6) of different thicknesses.

[0070] Example 8: Refer to Figures 10-13This is a schematic diagram of the structure of Embodiment 8 of the present invention. This embodiment discloses a positioning ball for adjusting the angle of the puncture needle with another structure, comprising a ball body (2-1) and a tensioning bolt. The ball body (2-1) comprises a ball body A (2-6) and a ball body B (2-7). After the ball bodies A (2-6) and B (2-7) are joined together to form a sphere, the ball body (2-1) is provided with a through hole (2-10) penetrating the ball body (2-1). The upper end of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole. A connecting cap is provided inside the ball body (2-1). 2-3), the connecting cap (2-3) is provided in the straight section of the through hole (2-10), the tensioning bolt includes a tensioning head (2-2) in the shape of an inverted frustum and a connecting part (2-14), the connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected to the connecting cap (2-3), by rotating the tensioning bolt the tensioning head (2-2) can move downward and squeeze into the expansion hole (2-5) of the through hole (2-10), and then push the ball body A (2-6) and ball body B (2-7) to expand to both sides, the axis of the tensioning bolt is provided with a piercing needle hole (2-13).

[0071] The tensioning bolts are provided in several parts, and the diameter of the puncture needle hole (2-13) of each tensioning bolt is different. Tensioning bolts with different hole diameters can use puncture needles of different thicknesses.

[0072] As an improvement, the positioning ball screwing mechanism (3) includes a wrench head (3-2) and a handle (3-1). The handle (3-1) and the wrench head (3-2) are connected in an "L" shape. The wrench head (3-2) can be engaged in the wrench mouth (2-4) and drive the tensioning bolt to rotate through the handle (3-1). The handle (3-1) and the wrench head (3-2) are provided with positioning guide wire holes (3-4) through which the positioning guide wire (4-2) can pass.

[0073] As a further improvement, the wrench head (3-2) is a hollow structure with a "C" shaped cross-section, that is, the wrench head is a hollow multi-faceted prism, and the surface of the wrench head (3-2) is provided with a groove (3-3).

[0074] As a further improvement, an angle measuring mechanism (4) is also provided, which includes an angle measuring instrument mounting bracket (4-1) and a positioning guide wire (4-2). The angle measuring instrument mounting bracket (4-1) is used to install the angle measuring instrument, and the positioning guide wire (4-2) can pass through the positioning guide wire hole (3-4) of the handle (3-1), so that the angle measuring mechanism (4) and the positioning ball screwing mechanism (3) form a whole.

[0075] As an improvement, the fixed frame plate (1) includes frame plate A (1-3) and frame plate B (1-4). Frame plate A (1-3) and frame plate B (1-4) are provided with corresponding positioning ball mounting slots (1-1). As required, a number of positioning balls are placed on the positioning ball mounting slots (1-1) of frame plate A (1-3) and aligned with frame plate B (1-4). After being fixed by the frame plate fixing bolts (1-2), the positioning balls are embedded in the positioning ball mounting slots and will not slide out from either side of the fixed frame plate (1).

[0076] In actual use: The ball body (2-1) is placed in the embedding hole. The ball body (2-1) is squeezed by the tensioning bolt, causing the ball body A and ball body B to expand outward, increasing the volume occupied, so that the ball body (2-1) is squeezed on the frame plate. After being squeezed, the ball body (2-1) can be relatively fixed with the frame plate and will not rotate in the embedding hole, thus achieving a fixed puncture angle.

[0077] Example 9: Refer to Figures 14-19 This embodiment discloses a positioning ball screwing mechanism (3), which includes a wrench head (3-2) and a handle (3-1). The handle (3-1) and the wrench head (3-2) are connected in an "L" shape. The wrench head (3-2) can be engaged in the wrench mouth (2-4) and drive the tensioning bolt to rotate through the handle (3-1). The handle (3-1) and the wrench head (3-2) are provided with positioning guide wire holes (3-4) through which positioning guide wires (4-2) can pass.

[0078] As a further improvement, the wrench head (3-2) is a hollow structure with a "C" shaped cross-section, that is, the wrench head is a hollow multi-faceted prism, and the surface of the wrench head (3-2) is provided with a groove (3-3).

[0079] As a further improvement, an angle measuring mechanism (4) is also provided, which includes an angle measuring instrument mounting bracket (4-1) and a positioning guide wire (4-2). The angle measuring instrument mounting bracket (4-1) is used to install the angle measuring instrument, and the positioning guide wire (4-2) can pass through the positioning guide wire hole (3-4) of the handle (3-1), so that the angle measuring mechanism (4) and the positioning ball screwing mechanism (3) form a whole.

[0080] As an improvement, the fixed frame plate (1) includes frame plate A (1-3) and frame plate B (1-4). Frame plate A (1-3) and frame plate B (1-4) are provided with corresponding positioning ball mounting slots (1-1). As required, a number of positioning balls are placed on the positioning ball mounting slots (1-1) of frame plate A (1-3) and aligned with frame plate B (1-4). After being fixed by the frame plate fixing bolts (1-2), the positioning balls are embedded in the positioning ball mounting slots and will not slide out from either side of the fixed frame plate (1).

Claims

1. A positioning ball for adjusting the angle of a puncture needle, characterized in that: The device includes a ball body (2-1) and a tensioning bolt. The ball body (2-1) has a through hole (2-10) penetrating through it. The upper section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole. A connecting cap (2-3) is provided inside the ball body (2-1), and the connecting cap (2-3) is located in the straight hole section of the through hole (2-10). The tensioning bolt includes a tensioning head (2-2) and a connecting part (2-14). The tensioning head (2-2) is an inverted frustum, which is larger at the top and smaller at the bottom. The platform-shaped tension head (2-2) can be engaged in the expansion hole (2-5). The connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected to the connecting cap (2-3). By rotating the tension bolt, the tension head (2-2) can be moved downward. As the volume of the tension head (2-2) increases, it squeezes the expansion hole (2-5) and causes it to expand outward. This, in turn, increases the volume of the ball body (2-1) and causes the outer surface of the ball body (2-1) to expand outward. The axis of the tension bolt is provided with a puncture needle hole (2-13).

2. The positioning ball for adjusting the angle of the puncture needle as described in claim 1, characterized in that: The sphere body (2-1) is made of a soft material, and when the center is compressed, the outside will expand to the periphery.

3. The positioning ball for adjusting the angle of the puncture needle as described in claim 1, characterized in that: The tensioning head (2-2) is provided with a wrench (2-4), which is one of an internal hexagonal wrench, a flat wrench, a cross wrench, or an internal polygonal wrench.

4. The positioning ball for adjusting the angle of the puncture needle as described in claim 1, characterized in that: There are several tensioning bolts, and the diameter of the puncture needle hole (2-13) of each tensioning bolt is different. Tensioning bolts with different hole diameters can use puncture needles of different thicknesses.

5. A positioning ball for adjusting the angle of a puncture needle, characterized in that: The device includes a ball body (2-1) and a tensioning bolt. The ball body (2-1) comprises a ball body A (2-6) and a ball body B (2-7). After the ball bodies A (2-6) and B (2-7) are joined together to form a sphere, the ball body (2-1) has a through hole (2-10) penetrating the ball body (2-1). The upper section of the through hole (2-10) is an expansion hole (2-5) in the shape of an inverted frustum, and the lower section is a straight hole. A connecting cap (2-3) is provided inside the ball body (2-1). The connecting cap (2-3) is located in the through hole (2-10). -10) Straight hole section, the tensioning bolt includes a tensioning head (2-2) in the shape of an inverted frustum and a connecting part (2-14). The connecting part (2-14) is provided with a connecting thread (2-12) that can be threadedly connected to the connecting cap (2-3). By rotating the tensioning bolt, the tensioning head (2-2) can be moved downward and pressed into the expansion hole (2-5) of the through hole (2-10), thereby pushing the ball body A (2-6) and the ball body B (2-7) to expand to both sides. The axis of the tensioning bolt is provided with a piercing needle hole (2-13).

6. The positioning ball for adjusting the angle of the puncture needle as described in claim 5, characterized in that: The ball body A (2-6) is hemispherical, and its lower part is provided with a protruding engaging part (2-8). The engaging part (2-8) can form a nut insert groove (2-9), and the connecting cap (2-3) can be inserted into the nut insert groove (2-9). The ball body B (2-7) is hemispherical, and its lower part is provided with a recessed engaging part (2-8). The engaging part (2-8) of the ball body A (2-6) can engage in the engaging part (2-8) of the ball body B (2-7), so that the ball body A (2-6) and the ball body B (2-7) form a spherical ball body (2-1).

7. The positioning ball for adjusting the angle of the puncture needle as described in claim 6, characterized in that: The lower part of the ball body B (2-7) is provided with a support base (2-11). The engaging part (2-8) of the ball body B (2-7) is located above the support base (2-11). The ball body A (2-6) is placed on the support base (2-11) and hugs the ball body B (2-7).

8. The positioning ball for adjusting the angle of the puncture needle as described in claim 5, characterized in that: The tensioning head (2-2) is provided with a wrench (2-4), which is an internal hexagonal wrench.

9. The positioning ball for adjusting the angle of the puncture needle as described in claim 5, characterized in that: There are several tensioning bolts, and the diameter of the puncture needle hole (2-13) of each tensioning bolt is different. Tensioning bolts with different hole diameters can use puncture needles of different thicknesses.

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