Ball-like aiming pre-display device and operation positioning system comprising same

Abstract

The utility model discloses a ball-like aiming pre-display device and an operation positioning system comprising the same, which belong to the technical field of medical instruments and are used for enabling doctors to conveniently and accurately implement operation positioning. The operation positioning system comprises the ball-like aiming pre-display device and a needle guide device assembly. The ball-like aiming pre-display device comprises an adjusting assembly, the adjusting assembly comprises an arc-shaped movement mechanism and a transverse swing mechanism, the arc-shaped movement mechanism can rotate relative to a center shaft along with the output end of the transverse swing mechanism, and the center shaft has the X-ray passing ability; the ball-like aiming pre-display device further comprises a developing element, the developing element has X-ray imaging performance, and the developing element is located in a normal position X-ray passing area and a lateral position X-ray passing area in the adjusting assembly at least in the working process. The needle guiding device assembly is installed on the arc-shaped movement mechanism and comprises a needle guiding cylinder, the needle guiding cylinder is provided with a hollow structure, and when the normal position developing element works, the normal position developing element is located on the axis of the hollow structure when the needle guiding cylinder is located in the normal position direction.

Description

Technical Field

[0001] The utility model relates to medical equipment, in particular to a ball-like aiming pre-display device and a surgical positioning system containing the same. Background Art

[0002] In minimally invasive surgery, puncture of the lesion is often necessary. Since the lesion cannot be seen visually, accurate positioning of the lesion becomes an important factor in the success of minimally invasive surgery. Surgical robots use tracking technology and robotic arms to achieve accurate positioning, but surgical robots are expensive and have a low penetration rate.

[0003] In the patent application filed by the applicant (application number 2024200050955), a technical solution of "X-ray guided surgical positioning device, including an arc motion mechanism and a lateral swing mechanism, the arc motion mechanism includes an arc arm and a moving component, the moving component can make circular arc motion relative to the arc arm, the arc arm is installed on the output end of the lateral swing mechanism; the central axis of the lateral swing mechanism has a cavity structure, which is conducive to the passage of X-rays; the arc motion mechanism can rotate relative to the central axis along with the output end of the lateral swing mechanism" is proposed. In actual use, this technical solution can "achieve the purpose of surgical positioning by adjusting the lateral swing mechanism and the arc motion mechanism, combined with the frontal and lateral X-ray films."

[0004] When using this technical solution (patent application number 2024200050955), after adjusting the mechanical structure, "after taking the X-ray, the doctor determines whether the positioning meets the medical requirements based on whether the needle guide assembly in the X-ray is pointing to the lesion." At this time, the doctor needs to use drawing tools to make a judgment and then make adjustments, which is a bit troublesome. Summary of the invention

[0005] The utility model aims to provide a technical solution for enabling doctors to implement surgical positioning conveniently and accurately.

[0006] The utility model adopts the following technical solutions.

[0007] The utility model discloses a ball-like aiming pre-display device, comprising an adjustment assembly, the adjustment assembly comprising an arc motion mechanism and a lateral swing mechanism, the arc motion mechanism comprising an arc arm and a moving component, the moving component can make circular arc motion relative to the arc arm, the arc arm is directly or indirectly mounted on the output end of the lateral swing mechanism; the central axis of the lateral swing mechanism has X-ray easy passability; the utility model is characterized in that: it also includes a developing calibration component, the developing calibration component comprises a developing element, the developing element is directly or indirectly mounted on the adjustment assembly, the developing element has X-ray imaging, and the developing element is at least located in the front and side X-ray passing areas in the adjustment assembly when working.

[0008] Preferably, the developing element comprises a side developing element; the side developing element is located on the axis of the central axis of the lateral swing mechanism at least when in operation.

[0009] Preferably, the developing element comprises a normal-position developing element, which is located directly above the axis of the central axis of the lateral swing mechanism in the normal-position direction at least when in operation.

[0010] Further, the developing element is a metal ball.

[0011] Furthermore, the developing calibration component also includes a developing coupling, the developing element is mounted on the developing coupling, and the developing coupling is connected to the adjustment assembly.

[0012] Further, the developing coupling member includes a positive coupling member and a side coupling member, and the positive coupling member and the side coupling member can rotate relative to the adjustment assembly.

[0013] The utility model also discloses a surgical positioning system, which includes the above-mentioned ball-like aiming pre-display device and a needle guide assembly. The needle guide assembly is installed on an arc motion mechanism. The needle guide assembly includes a needle guide cylinder. The needle guide cylinder has a hollow structure. When the positive position developing element is working, the positive position developing element is located on the axis of the hollow structure when the needle guide cylinder is in the positive position direction.

[0014] When in use, the present invention requires the aid of X-ray filming equipment, including an X-ray machine, a CT machine, a C-arm, a G-arm, etc. For the convenience of description, "X-ray" is used below to refer to X-rays, and "X-ray film" refers to a picture obtained by irradiating X-rays.

[0015] For the convenience of description and understanding, the utility model assumes that the patient lies flat during the operation. The "anteroposterior position" and "lateral position" in this article follow the concept of anteroposterior position and lateral position of spinal X-ray in medicine, and it is assumed that the anteroposterior position is perpendicular to the horizontal plane. Some terms are defined and explained as follows.

[0016] Lateral direction - the direction along the axis of the central axis of the lateral swing mechanism and parallel to the horizontal plane.

[0017] Anteroposterior direction - the direction perpendicular to the lateral position, that is, the direction perpendicular to the horizontal plane.

[0018] Anteroposterior X-ray - An X-ray taken in the frontal view.

[0019] Lateral X-ray – An X-ray taken from the side.

[0020] The "X-ray permeability" mentioned above means that when an object is exposed to X-rays, it does not absorb or absorbs very little X-rays, and no image is formed or the image is not obvious in the X-ray film. (For example, carbon fiber materials that are not too thick have "X-ray permeability").

[0021] The "X-ray imaging property" mentioned above means that when an object is exposed to X-rays, it can absorb X-rays and form a clear image in the X-ray film. (For example, metal materials have "X-ray imaging property").

[0022] The “developing element is located within the frontal and lateral X-ray passage zones within the adjusting assembly at least when in operation” mentioned in the preceding text - when the developing element is located in the working position, X-rays are used to take X-rays of the utility model in the frontal and lateral directions, and the parts within the adjusting assembly will not block the X-rays (have X-ray permeability), thereby not affecting the imaging of the developing element.

[0023] The needle guide tube is in the positive orientation - the axis of the hollow structure of the needle guide tube is in a position perpendicular to the horizontal plane.

[0024] The working principle of the utility model is described as follows.

[0025] In the ball-like aiming pre-display device, the moving component can make circular arc motion relative to the arc-shaped arm, and the arc-shaped arm can rotate relative to the central axis along with the output end of the lateral swing mechanism, so that the moving component moves like on a sphere, so it is called a "ball-like structure". The "ball-like structure" has a sphere center, which is a theoretical point rather than a physical point, so it is called a "virtual sphere center".

[0026] In order to perform surgical positioning, the designer of the utility model hopes to align the virtual sphere center with the patient's lesion in the frontal X-ray film and the lateral X-ray film, so that in the subsequent surgical operation, the medical puncture needle can be aimed at the lesion by simply aligning the medical puncture needle with the virtual sphere center. Therefore, the virtual sphere center is the aiming point, but because the virtual sphere center is not a physical entity, when taking an X-ray film, the virtual sphere center will not be automatically displayed on the X-ray film.

[0027] For this purpose, the present invention is provided with a developing element. Since a space for the patient to lie down is required, the position of the developing element cannot be set at a spatial position that coincides with the virtual sphere center, but the position of the virtual sphere center can be indicated by means of the imaging of the developing element in the X-ray film. As long as the distance between the developing element and the virtual sphere center in the anteroposterior projection and the lateral projection is preset (that is, the distance between the developing element and the virtual sphere center in the anteroposterior X-ray film and the lateral X-ray film respectively), the position of the virtual sphere center in the anteroposterior X-ray film and the lateral X-ray film can be calculated by the imaging of the developing element in the anteroposterior X-ray film and the lateral X-ray film; that is, the ball-like aiming pre-display device uses the developing element to indicate the position of the virtual sphere center. After finding the position of the virtual sphere center in the anteroposterior X-ray film and the lateral X-ray film, the present invention is adjusted so that the lesion coincides with the virtual sphere center in the anteroposterior X-ray film and the lateral X-ray film.

[0028] Then, in the surgical positioning system, as long as the axis of the hollow structure of the guide needle tube is always aligned with the virtual sphere center, in subsequent surgical operations, a medical puncture needle is inserted into the hollow structure of the guide needle tube and the medical puncture needle is aligned with the lesion, thereby achieving convenient and accurate surgical positioning.

[0029] It can be seen that the beneficial effect of the utility model is that the utility model can enable doctors to perform surgical positioning conveniently and accurately.

[0030] Based on this basic principle, as a preferred technical solution, the preset developing element can be set to coincide with the virtual center of the sphere in the projections in the anteroposterior direction and the lateral direction respectively (that is, the distance between the developing element and the virtual center of the sphere in the anteroposterior X-ray film and the lateral X-ray film is 0, see the description of Example 1), then the image of the developing element in the anteroposterior X-ray film and the lateral X-ray is the position of the virtual center of the sphere, which makes the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of embodiment 1.

[0032] Figure 2 for Figure 1 Schematic diagram after removing some parts.

[0033] Figure 3 for Figure 2 A front view schematic diagram with some parts removed.

[0034] Figure 4 for Figure 2 Schematic diagram after rotating 180° with some parts removed.

[0035] Figure 5 for Figure 3 , which is a partial schematic diagram of the arc motion mechanism of Example 1.

[0036] Figure 6 for Figure 5 Schematic diagram after removing some parts.

[0037] Figure 7 for Figure 6 Schematic diagram after removing some parts.

[0038] Figure 8 for Figure 1 The partial schematic diagram is a schematic diagram of the lateral swing mechanism of the first embodiment.

[0039] Fig. 9 for Figure 8 Schematic diagram after removing some parts.

[0040] Fig.10 for Figure 8A partial cross-sectional schematic diagram of .

[0041] Fig.11 for Figure 4 , which is a partial schematic diagram of the three-way moving mechanism of Example 1.

[0042] Fig.12 for Fig.11 A front view schematic diagram of .

[0043] Fig.13 It is a partial schematic diagram of the first embodiment when it is working.

[0044] Fig.14 This is a schematic diagram of the lateral radiograph during operation of the first embodiment.

[0045] Fig.15 It is a schematic diagram of taking an anteroposterior radiograph of the first embodiment when it is working.

[0046] Fig.16 It is a partial schematic diagram of the first embodiment when it is not working. DETAILED DESCRIPTION

[0047] The implementation modes of the present utility model are now described with reference to the accompanying drawings.

[0048] Figure 1 It is a schematic diagram of embodiment 1.

[0049] exist Figure 1 In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, 3 is a three-way moving mechanism, 4 is a needle guide assembly, 7 is a trolley, 8 is a counterweight, 91 is a lateral development calibration assembly, and 92 is a frontal development calibration assembly; the lateral development calibration assembly 91 and the frontal development calibration assembly 92 constitute a development calibration assembly. The three-way moving mechanism 3 is connected to the trolley 7; the trolley 7 has wheels 71. The arc motion mechanism 1, the lateral swing mechanism 2 and the three-way moving mechanism 3 constitute an adjustment assembly, and the adjustment assembly, the lateral development calibration assembly 91 and the frontal development calibration assembly 92 constitute a ball-like aiming pre-display device.

[0050] Figure 2 for Figure 1 The schematic diagram after some parts are removed is a schematic diagram after the trolley 7 and the counterweight 8 are removed.

[0051] exist Figure 2In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, 3 is a three-way moving mechanism, and 4 is a needle guide assembly. The arc motion mechanism 1 is mounted on the lateral swing mechanism 2, and the lateral swing mechanism 2 is mounted on the three-way moving mechanism 3. The needle guide assembly 4 is detachably or fixedly mounted on the arc motion mechanism 1. The needle guide assembly 4 includes a needle guide plate 41, a needle guide cylinder 42, and a needle guide screw 43. The needle guide plate 41 is generally made of an X-ray transparent material (such as carbon fiber), and the center hole of the needle guide cylinder 42 is a hollow structure for passing a medical puncture needle through when using the utility model. The needle guide cylinder 42 is fixedly mounted on the needle guide plate 41, and the needle guide screw 43 mounts the needle guide plate 41 on the arc motion mechanism 1. 311 is a mounting screw for mounting the three-way moving mechanism 3 on the trolley 7; 38 is a front and rear drive bolt of the three-way moving mechanism 3.

[0052] exist Figure 2 In the figure, B is the axis of the hollow structure of the needle guide tube 42 in the normal direction, and the axis B is perpendicular to the horizontal plane. This article refers to the needle guide tube 42 being in the normal direction at this time.

[0053] exist Figure 2 In the figure, 911 is a side connecting member, which is generally made of X-ray transparent material (such as carbon fiber), 912 is a side developing element, which is made of X-ray opaque material (such as steel), the side developing element 912 is mounted on the side connecting member 911 by bonding or other methods, 913 is a side mounting block, 914 is a side clamping shaft, which is used to mount the side connecting member 911 on the side mounting block 913, and the side connecting member 911 can rotate along the side clamping shaft 914, 915 is a side connecting screw, which is used to mount the side mounting block 913 on the lateral swing mechanism 2; the side connecting member 911, the side developing element 912, the side mounting block 913, and the side clamping shaft 914 constitute a side developing calibration assembly.

[0054] exist Figure 2 In the figure, 921 is a positive connection member, which is generally made of X-ray transparent material (such as carbon fiber), 922 is a positive development element, which is made of X-ray opaque material (such as steel), the positive development element 922 is mounted on the positive connection member 921 by bonding or other methods, 923 is a positive mounting block, 924 is a positive pressing shaft, which is used to mount the positive connection member 921 on the positive mounting block 923, and the positive connection member 921 can rotate along the positive pressing shaft 924, 925 is a positive connection screw, which is used to mount the positive mounting block 923 on the lateral swing mechanism 2; the positive connection member 921, the positive development element 922, the positive mounting block 923, and the positive pressing shaft 924 constitute a positive development calibration component.

[0055] exist Figure 2 In the figure, the positive connecting member 921 and the side connecting member 911 are developing connecting members.

[0056] Figure 3 for Figure 2 A front view schematic diagram with some parts removed.

[0057] exist Figure 3 In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, 3 is a three-way moving mechanism, and 4 is a needle guide assembly. 11 is an arc arm, and the arc arm 11 has an outer tooth 111 and an arc groove 112. The arc arm 11 belongs to the arc motion mechanism 1. 42 is a needle guide cylinder, 921 is a positive connection piece, and 922 is a positive developing element. B is the axis of the hollow structure of the needle guide cylinder 42 when it is in the positive direction, and the axis B is perpendicular to the horizontal plane. A is the axis of the central axis of the lateral swing mechanism. In this article, the direction along the axis A and parallel to the horizontal plane is referred to as the lateral direction.

[0058] exist Figure 3 In the figure, axis B intersects axis A, and the intersection point is the virtual center of the sphere.

[0059] Figure 4 for Figure 2 Schematic diagram after rotating 180° with some parts removed.

[0060] exist Figure 4 In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, and 3 is a three-way moving mechanism. 11 is an arc arm, 16 is a fixing bolt, 251 is an output end of the lateral swing mechanism, screw 17 mounts the arc arm 11 on the output end 251 of the lateral swing mechanism, and 19 is a hand wheel; the arc arm 11, fixing bolt 16, screw 17, and hand wheel 19 belong to the arc motion mechanism 1. 28 is a worm handle, which belongs to the lateral swing mechanism 2.

[0061] Figure 5 for Figure 3 , which is a partial schematic diagram of the arc motion mechanism of Example 1.

[0062] exist Figure 5 In the figure, 1 is an arc motion mechanism, 11 is an arc arm, the arc arm 11 has external teeth 111 and an arc groove 112, 12 is a sliding block, 13 is a cushion block, screw 131 installs the cushion block 13 on the sliding block 12, 14 is a cover plate, screw 141 installs the cover plate 14 on the sliding block 12, 16 is a fixing bolt, and screw 17 installs the arc arm 11 on the lateral swing mechanism.

[0063] Figure 6 for Figure 5 Schematic diagram after removing some parts.

[0064] exist Figure 611 is an arc-shaped arm, 111 is an external tooth, 112 is an arc-shaped groove, 12 is a sliding block, 121 is a guide portion of the slider 12, and the guide portion 121 is used to be installed in the arc-shaped groove 112 so that the sliding block 12 can slide along the arc-shaped groove 112; 16 is a fastening bolt, 18 is a pinion, and the two ends of the shaft of the pinion 18 are respectively installed on the sliding block 12 and the cover plate 14 (refer to Figure 5 ). The pinion 18 is meshed with the outer teeth 111. When the pinion 18 is rotated, the sliding block 12 can be driven to move in an arc shape along the arc arm 11.

[0065] Figure 7 for Figure 6 Schematic diagram after removing some parts.

[0066] exist Figure 7 In the figure, 12 is a sliding block, 121 is a guide portion of the sliding block 12, 16 is a set bolt, 18 is a pinion, and 19 is a hand wheel. The hand wheel 19 is connected to the shaft of the pinion 18, and the hand wheel 19 is used to drive the pinion 18 to rotate. The set bolt 16 is installed on the sliding block 12, and is used to press the shaft of the pinion 18 when the pinion 18 moves to a suitable position to prevent the sliding block 12 from sliding freely.

[0067] Figure 8 for Figure 1 The partial schematic diagram is a schematic diagram of the lateral swing mechanism of the first embodiment.

[0068] exist Figure 8 In the figure, 2 is a lateral swing mechanism. 21 is a box body, 22 is a box cover, and screws 221 connect the box body 21 and the box cover 22 together. The box body 21, the box cover 22, and the screws 221 constitute a box body assembly. 381 is a threaded hole for connecting with the front and rear drive bolts 38 of the three-way moving mechanism 3 (see Fig.11 ).

[0069] Fig. 9 for Figure 8 Schematic diagram after removing some parts.

[0070] exist Fig. 9In the figure, 21 is a housing, 23 is a worm wheel, 24 is a worm, 25 is a worm wheel coupling block, 26 is a central shaft, 27 is a worm support plate, and 28 is a worm handle. The worm wheel 23 is fixed with the worm wheel coupling block 25 and mounted on the central shaft 26; the worm wheel 23 can rotate along the central shaft 26. The worm wheel 23, the worm 24, and the worm wheel coupling block 25 constitute a rotating assembly. The worm wheel coupling block 25 has an end 251, which is the output end of the rotating assembly and also the output end of the lateral swing mechanism. Obviously, the arc motion mechanism 1 can rotate relative to the central shaft 26 with the end 251. The two ends of the worm 24 are supported on the worm support plate 27, and the screw 271 mounts the worm support plate 27 on the housing 21. 211 is a housing mounting screw, which is used to mount the housing 21 on the three-way moving mechanism. The axis of the central shaft 26 is roughly parallel to the horizontal plane, so 2 is called a "lateral" swing mechanism.

[0071] Fig.10 for Figure 8 A partial cross-sectional schematic diagram of .

[0072] exist Fig.10 In the figure, 21 is a box body, 22 is a box cover, 23 is a worm wheel, 25 is a worm wheel coupling block, 26 is a central shaft, 291 and 292 are gaskets, and the central shaft 26 has a hollow shaft structure to facilitate the passage of X-rays. Gaskets 291 and 292 are installed on the central shaft 26 to reduce friction. The worm wheel coupling block 25 has an end 251.

[0073] Fig.11 for Figure 4 , which is a partial schematic diagram of the three-way moving mechanism of Example 1.

[0074] exist Fig.11 In the figure, 3 is a three-way moving mechanism. 31 is a base, 33 is an upper and lower slide plate, 331 is a mounting screw for the upper and lower slide plates; 35 is a left and right slide plate, 351 is a mounting screw for the left and right slide plates; 361 is a front and rear slide rail, 362 is a front and rear slider, the front and rear slide rail 361 and the front and rear slider 362 constitute a front and rear moving linear guide assembly; 37 is an upper and lower driving bolt, the upper and lower driving bolt 37 passes through the base 31 and is threadedly connected to the upper and lower slide plates 33; 38 is a front and rear driving bolt, the front and rear driving bolt 38 passes through the left and right slide plates 35 and is connected to the threaded hole 381 of the box body (refer to Figure 8 ); 39 are left and right drive bolts, which pass through the upper and lower slide plates 33 and are threadedly connected to the left and right slide plates 35. 211 are box mounting screws, which are used to mount the box 21 on the front and rear slide blocks 362.

[0075] Fig.12 for Fig.11 A front view schematic diagram of .

[0076] exist Fig.12In the figure, 31 is a base, 321 is an upper and lower slide rail, 322 is an upper and lower slider, and the upper and lower slide rail 321 and the upper and lower slider 322 constitute an upper and lower linear guide assembly. 33 is an upper and lower slide plate, 331 is a mounting screw of the upper and lower slide plate, used to mount the upper and lower slide plate 33 on the upper and lower slider 322. 341 is a left and right slide rail, 342 is a left and right slider, and the left and right slide rail 341 and the left and right slider 342 constitute a left and right linear guide assembly. 35 is a left and right slide plate, 351 is a mounting screw of the left and right slide plate, used to mount the left and right slide plate 35 on the left and right slider 342. 361 is a front and rear slide rail, 362 is a front and rear slider. 37 is an upper and lower driving bolt, 39 is a left and right driving bolt. 211 is a box body mounting screw.

[0077] Fig.13 This is a partial schematic diagram of the first embodiment when it is working, and is a schematic diagram after the trolley 7 and the counterweight 8 are removed.

[0078] exist Fig.13 In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, 3 is a three-way movement mechanism, 4 is a needle guide assembly; 11 is an arc arm, 12 is a sliding block, 19 is a hand wheel; 28 is a worm handle; 251 is the output end of the lateral swing mechanism 2; 42 is a needle guide cylinder; 911 is a lateral connecting member, 912 is a lateral developing element, 921 is a positive connecting member, 922 is a positive developing element, and both the lateral developing element 912 and the positive developing element 922 are small metal balls. B is the axis of the hollow structure of the needle guide cylinder 42 when it is in the positive direction, and the axis B is perpendicular to the horizontal plane; A is the axis of the central axis of the lateral swing mechanism. The axis A passes through the lateral developing element 912, and the centroid of the lateral developing element 912 is located on the axis A; the positive developing element 922 is located directly above the axis A in the positive direction. At the same time, the axis B passes through the positive developing element 922, and the centroid of the positive developing element 922 is located on the axis B. Axis B intersects with axis A, and the intersection point is the virtual center of the sphere.

[0079] exist Fig.13 In the present embodiment, when the first embodiment is working, the doctor adjusts the three-way moving mechanism 3 according to the needs of the operation, and then the output end 251 of the lateral swing mechanism 2 rotates along the axis A with the arc motion mechanism 1 under the drive of the worm handle 28, and then the sliding block 12 rotates along the arc arm 11 under the drive of the hand wheel 19; the needle guide cylinder 4 rotates along the arc arm 11 with the sliding block 12 and moves to the position required for the operation. No matter where the needle guide cylinder 4 moves, the axis of the hollow structure of the needle guide cylinder 4 points to the virtual sphere center.

[0080] exist Fig.13 In the figure, the front connecting member 921 is made of carbon fiber material and thus does not block the front developing element 922 from being imaged under the front X-ray; the side connecting member 911 is made of carbon fiber material and thus does not block the side developing element 912 from being imaged under the side X-ray.

[0081] Fig.14 This is a schematic diagram of the lateral radiograph during operation of the first embodiment.

[0082] exist Fig.14 In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, 3 is a three-way moving mechanism, 42 is a needle guide, 911 is a lateral connecting member, and 912 is a lateral developing element. The dotted line D is the field of view when taking a lateral X-ray. Since the lateral connecting member 911 is made of carbon fiber material, it does not show up in the lateral X-ray film, and the lateral developing element 912 is made of a metal ball structure, so it is displayed as a circle in the lateral X-ray film. Obviously, since the central axis of the lateral swing mechanism has a hollow axis structure, and the lateral connecting member 911 does not block the lateral developing element 912 from showing up under the lateral X-ray, the lateral developing element 912 is located in the lateral X-ray passing area in the adjustment assembly. In the lateral X-ray film, the center of the circle of the lateral developing element 912 reflects the position of the virtual ball center in the lateral X-ray film.

[0083] Fig.15 It is a schematic diagram of taking an anteroposterior radiograph of the first embodiment when it is working.

[0084] exist Fig.15 In the figure, 1 is an arc motion mechanism, 42 is a needle guide tube, 921 is an anteroposterior coupling member, and 922 is an anteroposterior developing element. The dotted line E is the field of view when taking an anteroposterior X-ray. The anteroposterior coupling member 921 is made of carbon fiber material, so it does not show up in the anteroposterior X-ray. The anteroposterior developing element 922 is made of a metal ball structure, so it appears as a circle in the anteroposterior X-ray. Obviously, since the anteroposterior coupling member 921 does not block the anteroposterior developing element 922 from showing up under the anteroposterior X-ray, and since the output end 251 of the lateral swing mechanism 2 has rotated the arc motion mechanism 1 along the axis A by an angle (reference Fig.13 ), so that the arc motion mechanism will not block the X-ray in the orthogonal direction, the orthogonal developing element 922 is located in the orthogonal X-ray passing area in the adjustment assembly. In the orthogonal X-ray film, the center of the orthogonal developing element 922 reflects the position of the virtual sphere center in the orthogonal X-ray film.

[0085] Fig.16 It is a partial schematic diagram of the first embodiment when it is not working.

[0086] exist Fig.16In the figure, 1 is an arc motion mechanism, 2 is a lateral swing mechanism, 3 is a three-way movement mechanism, 4 is a needle guide assembly, 911 is a lateral coupling member, 912 is a lateral developing element, 914 is a lateral pressing shaft, 921 is a positive coupling member, 922 is a positive developing element, and 924 is a positive pressing shaft. The lateral coupling member 911 and the lateral developing element 912 rotate around the lateral pressing shaft 914, so that the lateral developing element 912 leaves the field of view when the lateral X-ray film is taken. The positive coupling member 921 and the positive developing element 922 rotate around the positive pressing shaft 924, so that the positive developing element 922 leaves the field of view when the positive X-ray film is taken.

[0087] The first embodiment is a preferred implementation mode of the present utility model, and its working process is described as follows.

[0088] When in use, the patient lies on the operating table, and the utility model is placed beside the operating table; the doctor adjusts the up and down drive bolts 37, the front and rear drive bolts 38 and the left and right drive bolts 39 of the three-way moving mechanism 3 to appropriate positions according to the needs of the operation (see Fig.11 ); then, driven by the worm handle 28, the output end 251 of the lateral swing mechanism 2 rotates along the axis A with the arc motion mechanism 1; then, driven by the hand wheel 19, the slide block 12 rotates along the arc arm 11, so that the slide block 12 moves to the position required for the operation. Then, the lateral connecting member 911 and the lateral developing element 912 are located in their working positions, and the front connecting member 921 and the front developing element 922 are also located in their working positions (see Fig.13 ).

[0089] Next, a lateral X-ray film is taken of the patient using a C-arm. The doctor checks whether the display position of the lateral developing element 912 on the lateral X-ray film coincides with the position of the lesion; if not, the three-way moving mechanism 3 is adjusted until the display position of the lateral developing element 912 on the lateral X-ray film coincides with the lesion.

[0090] Then, similarly, the C-arm is used to take an anteroposterior X-ray of the patient. The doctor checks whether the display position of the anteroposterior developing element 922 on the lateral X-ray coincides with the position of the lesion; if not, the three-way moving mechanism 3 is adjusted until the display position of the anteroposterior developing element 922 on the anteroposterior X-ray coincides with the lesion.

[0091] Then, the needle guide assembly 4 is mounted on the sliding block 12. Since the axis of the hollow structure of the needle guide cylinder 4 always points to the virtual sphere center (see Fig.13 ); The doctor can then insert the medical puncture needle into the needle guide tube 4 and perform the puncture operation.

[0092] As can be seen from the above, the present invention can accurately display whether the surgical aiming point meets the surgical requirements by providing a developing and calibrating component, so that the doctor can conveniently and accurately perform surgical positioning.

[0093] In addition to the above-mentioned embodiments, the structures, arrangement positions and connections of the components of the present invention may be varied.

[0094] For example, in the first embodiment, the side developing element and the front developing element are metal balls, but they can also be set to be hemispherical, small cylindrical or disc-shaped.

[0095] For example, in the first embodiment, the lateral connecting member and the anterior connecting member are in the shape of carbon fiber plates, but they can also be made of thin metal rods as long as they do not hinder the image display of the lateral developing element and the anterior developing element in the X-ray film.

[0096] For another example, in the first embodiment, the lateral connecting member and the front connecting member have a rotatable structure, and of course, they can also be set as a fixed structure, or can also be set as other types of movable structures or detachable structures.

[0097] For example, in the first embodiment, the hollow structure of the needle guide tube is a continuous central hole structure. Of course, the hollow structure of the needle guide tube can also be set to be discontinuous, as long as the medical puncture needle can pass through it.

[0098] For example, in embodiment 1, a three-way moving mechanism is included. In actual application, the three-way moving function can be set on the operating table, and the patient can be moved together with the moving of the operating table. Therefore, the technical solution of the utility model does not include the three-way moving mechanism.

[0099] For example, in the first embodiment, the shape of the arc-shaped arm is an arc. Of course, the shape of the arc-shaped arm can also be set to other shapes, as long as it is ensured that the moving component can make an arc-shaped motion relative to the arc-shaped arm.

[0100] For another example, in the first embodiment, the lateral swing mechanism adopts a worm gear transmission mechanism, and of course other types of transmission mechanisms may also be adopted.

[0101] For example, the first embodiment of the present invention is a preferred technical solution (the distance between the developing element and the virtual center of the sphere in the anteroposterior X-ray film and the lateral X-ray film is 0 respectively). Of course, in a new embodiment, the distance between the developing element and the virtual center of the sphere in the anteroposterior X-ray film and the lateral X-ray film is not 0, but offset by a certain value. When determining the virtual center of the sphere, the position of the developing element in the X-ray film is compensated to obtain the position of the virtual center of the sphere.

[0102] Etc., on the basis of the technical solution of the utility model, any improvements, additions, subtractions or equivalent changes made according to the basic principles of the utility model should not be excluded from the protection scope of the utility model.

Claims

1. A ball-like aiming pre-display device, comprising an adjustment assembly, the adjustment assembly comprising an arc motion mechanism and a lateral swing mechanism, the arc motion mechanism comprising an arc arm and a moving assembly, the moving assembly can make an arc motion relative to the arc arm, the arc arm is directly or indirectly mounted on the output end of the lateral swing mechanism; the central axis of the lateral swing mechanism has X-ray permeability; characterized in that: It also includes a developing calibration component, which includes a developing element. The developing element is directly or indirectly installed on the adjusting assembly. The developing element has X-ray imaging properties. The developing element is located in the frontal and lateral X-ray passage areas in the adjusting assembly at least when working.

2. The ball-like aiming pre-display device according to claim 1, characterized in that The developing element comprises a side developing element; the side developing element is located on the axis of the central axis of the lateral swing mechanism at least when in operation.

3. The ball-like aiming pre-display device according to claim 1, characterized in that The developing element comprises a normal developing element, and the normal developing element is located directly above the axis of the central axis of the lateral swing mechanism in the normal direction at least when in operation.

4. The ball-like aiming pre-display device according to claim 1, characterized in that The developing element is a small metal ball.

5. The ball-like aiming pre-display device according to claim 1, characterized in that The developing calibration component also includes a developing coupling, the developing element is mounted on the developing coupling, and the developing coupling is connected to the adjusting assembly.

6. The ball-like aiming pre-display device according to claim 5, characterized in that The developing coupling member includes a positive coupling member and a side coupling member, and the positive coupling member and the side coupling member can rotate relative to the adjustment assembly.

7. A surgical positioning system comprising a ball-like aiming pre-display device, characterized in that: It comprises the ball-like aiming pre-display device as described in any one of claims 1 to 6, and also comprises a needle guide assembly, wherein the needle guide assembly is mounted on the arc motion mechanism, wherein the needle guide assembly comprises a needle guide cylinder, wherein the needle guide cylinder has a hollow structure, and when the positive position developing element is working, the positive position developing element is located on the axis of the hollow structure when the needle guide cylinder is in the positive position direction.

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