CN221577776U

CN221577776U - Auxiliary positioning device for spine shooting

Info

Publication number: CN221577776U
Application number: CN202323188342.4U
Authority: CN
Inventors: 石晓兵; 施骏; 石洲同; 孟祥柱; 庄伟康
Priority date: 2023-11-25
Filing date: 2023-11-25
Publication date: 2024-08-23
Anticipated expiration: 2033-11-25

Abstract

The utility model belongs to the technical field of medical appliances, and particularly relates to an auxiliary positioning device for spine radiography. Comprises a main body frame, a transverse positioning line group, a longitudinal positioning line group and a cross positioning frame; the main body frame is a square frame surrounded by four sides, and the cross positioning frame is made of an X-ray impermeable material and is arranged in the center of the frame; marks are arranged on the cross bars and the longitudinal bars of the cross positioning frame; the transverse and longitudinal positioning line groups comprise a measuring line and sliding blocks arranged at two ends of the measuring line, a plurality of groups are arranged, and two sliding blocks of each group are respectively arranged on a pair of opposite side frames of the main body frame and can slide along the side frames; the transverse sets of measurement lines and the longitudinal sets of measurement lines can intersect to form a cross-shaped orientation. The utility model has accurate positioning, can accurately position a plurality of needle threading positions by one X-ray irradiation, does not need to pass through a plurality of X-rays in the traditional method, greatly saves the operation time and reduces the radiation times of patients; and the structure is simple, the cost is low, and the operation is convenient.

Description

Auxiliary positioning device for spine shooting

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to an auxiliary positioning device for spine radiography.

Background

The fixation through Pi Jizhu pedicles is a conventional treatment mode for treating non-osteoporosis thoracolumbar fracture at present. However, the pedicle positioning method under the existing condition has a certain problem, the patient performs pedicle positioning after X-ray irradiation on an operation table, and the most commonly used positioning in the operation at present is to fix the Kirschner wire used in the operation on the back of the patient by using an adhesive tape after crisscross placement, and adjust the position after repeated ray irradiation and then mark. Once the needle is moved or the adhesive tape is loosened, there is a possibility that the irradiation positioning needs to be re-performed or the operation position is moved more seriously, so that adverse events occur. For this purpose, a device for intraoperative X-ray sub-pedicle positioning needs to be designed.

Disclosure of Invention

The utility model aims to provide the auxiliary positioning device for the spine radiography, which has the advantages of simple structure, accurate positioning and reduced radiation irradiation times.

The utility model provides an auxiliary positioning device for spine shooting, which comprises a main body frame, a positioning line group and a cross positioning frame;

the main body frame is a square frame with four enclosed sides, and the cross positioning frame is arranged at the central position in the main body frame; marks are arranged on the cross bars and the longitudinal bars of the cross positioning frame;

The positioning line group comprises a measuring line and sliding blocks arranged at two ends of the measuring line; the positioning line group is divided into a plurality of transverse groups and longitudinal groups; the two sliding blocks of each group are respectively arranged on a pair of opposite longitudinal/transverse frames of the main body frame and can slide back and forth along the frames; the measuring lines of the transverse group and the measuring lines of the longitudinal group can be crossed to form a cross positioning;

The cross positioning frame is made of a material which cannot be penetrated by X-ray; such as medical stainless steel;

The main body frame is provided with a support rod for supporting the main body frame above the body of the patient.

In the utility model, the supporting rod is a threaded supporting rod with threads;

the center of the cross positioning frame is provided with a universal bubble level;

The threaded support rod comprises a threaded straight rod and a screwing handle fixed at the top end of the threaded rod;

The bottom end of the threaded straight rod is provided with a soft supporting foot for supporting on the body of a patient;

The four vertex angle positions of the main body frame are respectively provided with a threaded hole, the supporting rods are correspondingly four, and the supporting rods are turned into the threaded holes from top to bottom through threads;

When the level gauge is used, an operator can adjust the length of the threaded support rod below the main body frame by screwing the screwing handle, so as to adjust the horizontal plane of the main body frame, and when the position of the main body frame is adjusted to the position that the bubble is positioned at the center of the level gauge, the bubble indicates the level of the main body frame.

In the utility model, the cross positioning frame comprises a central base and four connecting rods, wherein the four connecting rods are arranged at equal intervals around the central base (namely, the included angle between the adjacent connecting rods is 90 degrees) and are fixedly connected to form a cross shape; the solid blocks with different geometric shapes are marked, the geometric blocks are connected in series by connecting rods, are sequentially connected and arranged at equal intervals, and face upwards with different geometric shapes;

The universal bubble level is arranged on the center base.

Further, the width of the geometric shape block is 2 mm-3 mm, preferably 2mm; the thickness is 2-5 mm.

Further, the distance between the geometric blocks is 1-3 mm, preferably 2mm.

Further, the geometric shape blocks are continuously arranged, the cross sections of the geometric shape blocks are various regular or irregular geometric shape blocks such as five-pointed star, triangle, square, round and the like, and the geometric shape faces upwards; the shapes of two adjacent geometric blocks are not identical.

In the utility model, the connecting rod and the geometric block on the connecting rod are integrally formed by adopting carbon steel.

Thus, after the X-ray irradiates the cross positioning frame, the geometric blocks on the X-ray film are white or light gray, and contrast with the black of the biological tissue part of the human body, so that marks which can be used for positioning on the X-ray film are formed.

In the utility model, grooves along the length direction are arranged on the upper end surfaces of four sides of the main body frame and are used as sliding grooves;

the sliding blocks are cubic blocks which can be placed in the sliding grooves in a fitting mode and slide; the upper end face of the cube is provided with a wire ring, and the measuring wire is connected with the sliding block by being bound on the wire ring.

Further, the upper end face of the cube is provided with a threaded hole, and the bottom of the wire ring is provided with a threaded rod; the wire ring and the cube are detachably connected through threads; this facilitates better disinfection and cleaning.

Further, the top of the wire ring is provided with a notch, the measuring wire is made of a metal wire, the two ends of the measuring wire are provided with lantern rings, and the measuring wire can be detachably sleeved on the wire ring through the notch of the wire ring.

In the utility model, scales are also arranged on the side frame of the main body frame and used for assisting in positioning the slide block on the opposite side frame, so that the measuring line is ensured to be parallel to the cross rod/longitudinal rod of the cross positioning frame.

In the utility model, a locating piece with a screw hole is arranged at the outer side edge of one side frame of the main body frame, and the locating piece is integrally connected with the side frame and is used for being connected with the auxiliary bracket and the side frame of the operating bed body to serve as an auxiliary connection and fixing mode.

The utility model is also provided with a needle application angle positioning device which comprises an angle dial, a pointer, a fixed knob and an auxiliary fixed block;

The side frames of the main body frame are provided with a through chute along the length direction of the frames;

The angle dial is a disc, and the front surface of the angle dial is provided with angle scales; the back of the angle disc is provided with a raised sliding positioning block, the thickness of the sliding positioning block is matched with the width of the chute, and the angle disc is inserted into the chute through the sliding positioning block so as to slide back and forth on the side frame of the main body frame; a round hole is formed in the center of the angle disc;

the pointer is an elongated rod, and a round hole is formed in the middle of the pointer;

The auxiliary fixing block is provided with a threaded hole and is positioned on the inner side surface of the side frame of the main body frame;

One end of the fixed knob is a twisting handle for holding and twisting by an arch hand, and the other end of the fixed knob is a stud; the stud can sequentially pass through the circular hole and the chute of the pointer and the angle disc, extend to the inner side surface of the side frame and extend out to be butted with the threaded hole of the auxiliary fixing block;

When the fixed knob is screwed down, the distance between the screwed handle of the fixed knob and the auxiliary fixed block can be shortened to clamp the angle dial, the pointer and the side frame of the main body frame, so that the angle of the pointer and the position on the side frame are fixed; when the fixed knob is unscrewed, the angle dial can slide on the side frame, and the pointer angle is adjustable.

Thus, a reference basis can be provided for the side needle application angle during needle application.

When the utility model is used, a patient for operation lies on an operation bed in a prone position, the auxiliary positioning device for spine shooting is placed on the back of the patient, the auxiliary positioning device is supported by the soft supporting legs under the four threaded supporting rods, the main body frame is positioned above the patient, and the soft supporting legs can improve the positioning comfort of the positioning device; the operator can adjust the length of the threaded support rod below the main body frame by screwing the screwing handle, so as to adjust the level of the main body frame, and when the position of the main body frame is adjusted to the position that the bubble in the level is positioned at the central position, the level of the main body frame is indicated; then the patient is irradiated downwards from the upper part of the patient by an X-ray machine, because X-rays cannot penetrate through the cross positioning frame, the X-ray film displays the white cross positioning frame while displaying the part of the patient needing the operation needle penetration; thus, the affected part and the cross positioning frame which need to be subjected to needle application are displayed on an X-ray film; then, taking the cross positioning frame as a rectangular coordinate system, measuring the marking positions of the cross bars and the vertical bars on the cross positioning frame corresponding to the affected part of the surgical needle on the X-ray film, and marking; then sliding a transverse/longitudinal sliding block on the main body frame, corresponding a transverse/longitudinal measuring line to a marking position of the cross positioning frame, wherein a cross point of the transverse/longitudinal measuring line is a needle insertion point, and marking the corresponding back position; several sets of transverse/longitudinal measuring lines can be positioned simultaneously to different needle threading positions. Therefore, the needle insertion point can be accurately and quickly positioned.

Further, the added needle application angle positioning device can further help to confirm the needle application angle; the method comprises the following specific steps:

Unscrewing the fixing knob, and adjusting the needle application angle positioning device to slide to the side position of the nearest back needle point;

The pointer of the slender rod is adjusted to be arranged at an initial position which is vertical to the ground by 90 degrees, and the X-ray film of the human body side position is shot through the side irradiation of the C-arm X-ray machine; at the moment, the needle inserting direction is defined according to the connecting line of the pedicle of the X-ray film and the middle part of the vertebral body, and the included angle between the needle inserting direction and the vertical slender rod pointer can be measured on the software of shooting and imaging by the C-arm X-ray machine, wherein the included angle is the needle inserting angle of the surgical needle at the side position during surgery;

Rotating the pointer of the slender rod by a corresponding angle based on the angle scale, enabling the pointer of the slender rod to be parallel to the needle inserting direction, and screwing the fixed knob for fixing;

an auxiliary line is drawn by projecting the elongate rod pointer to the patient's sideways position.

Finally, the auxiliary positioning device of the sheet is withdrawn, a doctor can accurately position the needle insertion point, then the needle insertion angle is adjusted to be as close to the auxiliary line angle as possible according to the auxiliary line of the needle insertion angle with the side body in place as auxiliary reference, and the needle insertion operation is started.

The utility model has accurate positioning, can accurately position a plurality of needle threading positions of the right position and the side position by X-ray irradiation for each time, does not need to pass X-ray irradiation for a plurality of times in the prior art, repeatedly adjusts the accurate needle threading positions according to X-ray films step by step, greatly saves operation time and reduces the radiation times of patients; and the structure is simple, the cost is low, and the operation is convenient.

Drawings

Fig. 1 is a structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of an exploded view of an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a cross-shaped positioning frame according to an embodiment of the present utility model.

FIG. 4 is an enlarged schematic view of a slider portion according to an embodiment of the present utility model.

Fig. 5 is an enlarged schematic view of a supporting bar portion according to an embodiment of the present utility model.

Fig. 6 is a schematic structural view of a needle application angle positioning device according to an embodiment of the utility model.

Fig. 7 is a schematic view of a partial structure of a needle angle positioning device according to an embodiment of the utility model.

Fig. 8 is an enlarged and exploded view of an embodiment of the needle angle positioning device of the present utility model.

Reference numerals in the drawings: 1 is a main body frame, 2 is a positioning line group, 3 is a cross positioning frame, 4 is a measuring line, 5 is a sliding block, 6 is a sliding groove, 7 is a wire loop, 8 is a central base, 9 is a connecting rod, 10 is a geometric block, 11 is a universal bubble level, 12 is a supporting rod, 13 is a screwing handle, 14 is a soft supporting leg, 15 is a scale, 16 is a pointer, 17 is a fixed knob, 18 is an auxiliary fixed block, 19 is a long sliding groove, and 20 is a sliding positioning block.

Description of the embodiments

The utility model comprises a main body frame 1, a transverse positioning line group 2, a longitudinal positioning line group 2, a cross positioning frame 3 and a needle application angle positioning device;

The main body frame 1 is a square frame with four edges enclosed, the four edges are connected by adopting metal square tubes (such as sectional materials) in a head-tail welding way or in a screw way, and the cross positioning frame 3 is arranged at the central position in the main body frame 1; marks are arranged on the cross bars and the longitudinal bars of the cross positioning frame; the cross locating rack adopts medical stainless steel material which can not be penetrated by X-ray.

The positioning line group 2 comprises a measuring line 4 and sliding blocks 5 arranged at two ends of the measuring line; the positioning line groups 2 are divided into 2 transverse groups and 2 longitudinal groups; the two sliding blocks 5 of each group are respectively arranged on a group of opposite long frames and wide frames of the main body frame 1 and can slide back and forth along the frames; the transverse sets of measuring lines 4 and the longitudinal sets of measuring lines 4 can intersect to form a cross-shaped positioning.

Grooves along the length direction are formed in the upper end faces of four sides of the main body frame 1 and serve as sliding grooves 6; the sliding blocks 5 are all aluminum alloy cubes which can be placed in the sliding grooves 6 in a fitting mode and slide, and wire loops 7 are arranged on the upper end faces of the cubes; the upper end face of the cube is provided with a threaded hole; a notch is arranged at the top of the wire loop 7, the bottom is provided with a threaded rod; the wire loop 7 is detachably connected with the cube through threads; thus being convenient for better disinfection and cleaning; the measuring wire 4 adopts a stainless steel tension spring with the specification of 2mm, two ends of the tension spring are integrally bent to form a lantern ring, and the lantern ring can be detachably sleeved on the wire ring 7 through a notch of the wire ring 7; when the two opposite sliding blocks 5 are placed in the sliding grooves 6 of the opposite frames, the measuring line 4 can form a certain tensile force to be tightened, and the measuring line 4 is ensured to be straightened.

The cross positioning frame 3 comprises a central cylindrical central base 8 and four connecting rods 9, wherein the four connecting rods 9 are arranged at equal intervals around the central base 8 (namely, the included angles between the adjacent connecting rods are 90 degrees) and are fixedly connected to form a cross shape; the geometric blocks 10 are connected in series by connecting rods 9, are sequentially connected and arranged at equal intervals, and face upwards in different geometric shapes; the center of the center base 8 is provided with a universal bubble level 11;

The overall width of the geometric block 10 is 3mm; the thickness is 3mm; the spacing between the geometric blocks 10 is 2mm; the geometric shape blocks are continuously arranged and have various regular or irregular geometric shape blocks with the cross sections of five-pointed star, triangle, square, round and the like; the shapes of two adjacent geometric blocks 10 are not identical; the connecting rod 9 and the geometric block 10 on the connecting rod 9 can be made of carbon steel and integrally formed;

The main body frame 1 is provided with a supporting rod 12 for supporting the main body frame 1 above the body of a patient, the supporting rod 12 is a threaded supporting rod with threaded metal, the top end of the threaded supporting rod is fixedly provided with a screwing handle 13, the bottom end of the threaded supporting rod is provided with a silica gel soft supporting leg 14, and the main body frame is provided with a curved surface which can be deformed and attached to the body of the patient and is supported on the body of the patient;

Four vertical threaded holes are formed in the main body frame 1 at the top angle positions, four threaded support rods are correspondingly arranged, the four threaded holes are turned into the threaded holes from top to bottom through threads, and then the soft silica gel support legs 14 are also rotationally connected with the bottom ends of the threaded support rods through threads, so that the angles of the soft silica gel support legs 14 can be rotationally adjusted;

In use, the operator can adjust the length of the threaded support bar below the main body frame 1 by screwing the screwing handle 13, thereby adjusting the horizontal plane of the main body frame 1, and when the position of the main body frame 1 is adjusted to the position that the bubble in the universal bubble level 11 is positioned at the center, namely, the level of the main body frame 1 is indicated.

The side frame of the main body frame 1 is also provided with auxiliary scales for assisting in positioning the slide block on the opposite side frame, and the measuring line is ensured to be parallel to the cross rod/longitudinal rod of the cross positioning frame.

The needle application angle positioning device comprises an angle dial 15, a pointer 16, a fixed knob 17 and an auxiliary fixed block 18;

A through long chute 19 is arranged on the side frame of the main body frame 1 along the length direction of the frame;

The angle dial 15 is a disc, and angle scales are arranged on the front surface of the angle dial 15; the back of the angle plate 15 is provided with two sliding positioning blocks 20 which are separated and protrude, the thickness of the sliding positioning blocks 20 is matched with the width of the long sliding groove 19, and the angle plate 15 is inserted into the long sliding groove 19 through the sliding positioning blocks 20 so as to slide back and forth on the side frame of the main body frame 1; a round hole is formed in the center of the angle disc 15;

The pointer 16 is an elongated rod, and a round hole is formed in the middle of the pointer;

The auxiliary fixing block 18 is provided with a threaded hole and is positioned on the inner side surface of the side frame of the main body frame 1; when the sliding positioning blocks 20 pass through the long sliding grooves 19, the auxiliary fixing blocks 18 can be exactly matched and positioned in the interval area between the two sliding positioning blocks 20;

One end of the fixed knob 17 is a twisting handle for holding and twisting by an arch hand, and the other end is a stud; the stud can sequentially pass through the pointer 16, the round hole of the angle plate 15 and the long chute 19, extend to the threaded hole of the auxiliary fixing block 18 and are in butt joint.

When the fixed knob is screwed down, the distance between the screwed handle of the fixed knob and the auxiliary fixed block can be shortened to clamp the angle dial, the pointer and the side frame of the main body frame, so that the angle of the pointer and the position on the side frame are fixed; when the fixed knob is unscrewed, the angle dial can slide on the side frame, and the pointer angle is adjustable. Thus, a reference basis can be provided for the side needle application angle during needle application.

When the utility model is used, a patient for operation lies on an operation bed in a prone position, the auxiliary positioning device for spine shooting is placed on the back of the patient, the auxiliary positioning device is supported by soft supporting legs under four threaded supporting rods and is attached to the body of the patient, the main body frame is positioned above the patient, and the soft supporting legs can improve the placement comfort of the positioning device; the operator can adjust the length of the threaded support rod below the main body frame by screwing the screwing handle, so as to adjust the level of the main body frame, and when the position of the main body frame is adjusted to the position that the bubble in the level is positioned at the central position, the level of the main body frame is indicated; the positioning line group is firstly taken down or slid to the edge position of the main body frame; then the patient is irradiated downwards from the upper part of the patient by an X-ray machine, because X-rays cannot penetrate through the cross positioning frame, in the X-ray film, the geometric blocks on the X-ray film are white or light gray, contrast is formed between the geometric blocks and the black of the biological tissue part of the human body, and contrast border lines with obvious morphological distinction are formed between the geometric blocks and the gray of the bone tissue, so that marks which can be used for positioning on the X-ray film are formed;

The white cross positioning frame is displayed when the part of the patient needing the surgical needle penetration is displayed, so that the affected part needing the needle application and the cross positioning frame are displayed on the X-ray film; then, taking the cross positioning frame as a rectangular coordinate system, measuring the marking positions of the cross bars and the vertical bars on the cross positioning frame corresponding to the affected part of the surgical needle on the X-ray film, and marking the corresponding geometric figures; then sliding a transverse/longitudinal sliding block on the main body frame, enabling a transverse/longitudinal measuring line to correspond to the marked geometric figure position of the cross positioning frame, wherein the cross point of the transverse/longitudinal measuring line is a needle insertion point, and marking a point at the corresponding back position; several sets of transverse/longitudinal measuring lines can be positioned simultaneously to different needle threading positions. Therefore, the needle insertion point can be accurately and quickly positioned.

Further, unscrewing a fixed knob of the needle application angle positioning device, and adjusting the needle application angle positioning device to slide to a side position of the nearest back needle point;

the pointer of the slender rod is adjusted to be arranged at an initial position which is vertical to the ground by 90 degrees, and the X-ray film of the human body side position is shot through the side irradiation of the C-arm X-ray machine; at the moment, the needle inserting direction is defined according to the connecting line of the pedicle of the X-ray film and the middle part of the vertebral body, and the included angle between the needle inserting direction and the vertical slender rod pointer can be measured on the software of shooting and imaging by the C-arm X-ray machine, wherein the included angle is the needle inserting angle of the surgical needle at the side position during surgery; rotating the pointer of the slender rod by a corresponding angle based on the angle scale, enabling the pointer of the slender rod to be parallel to the needle inserting direction, and screwing the fixed knob for fixing; an auxiliary line is drawn by projecting the elongate rod pointer to the patient's sideways position.

Finally, the auxiliary positioning device of the sheet is withdrawn, a doctor can accurately position the needle insertion point, then the needle insertion angle is adjusted to be as close to the auxiliary line angle as possible according to the auxiliary line of the needle insertion angle with the side body in place as auxiliary reference, and the needle insertion operation is started. The needle insertion point is not required to be completely accurate, and the operation is not affected by about 1-2 mm of error within a certain needle application feasible range.

The utility model has accurate positioning, can accurately position a plurality of needle threading positions by X-ray irradiation for each time at the front and side positions, does not need to pass X-ray irradiation for a plurality of times in the prior art, repeatedly adjusts the accurate needle threading positions step by step according to X-ray films, greatly saves operation time and reduces the radiation times of patients; and the structure is simple, the cost is low, and the operation is convenient.

While the above-described methods are illustrated and described as a series of structures for simplicity of explanation, it is to be understood and appreciated that the methods are not limited by the specific details, as some structures may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as would be understood by those skilled in the art.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The auxiliary positioning device for the spine shooting is characterized by comprising a main body frame, a positioning line group and a cross positioning frame;

the cross positioning frame is made of a material which cannot be penetrated by X-ray;

2. The auxiliary positioning device for the shooting of the spine as claimed in claim 1, wherein the supporting rod is a threaded supporting rod with threads;

the main body frame is provided with four threaded holes at the positions of four vertex angles, and the supporting rods are correspondingly arranged in the threaded holes from top to bottom through threads.

3. The auxiliary positioning device for the spine shooting of claim 2, wherein the cross positioning frame comprises a central base and four connecting rods, the four connecting rods are arranged around the central base at equal intervals in a plane, namely, the included angles between the adjacent connecting rods are 90 degrees, and the four connecting rods are fixedly connected to form a cross shape; the solid blocks with different geometric shapes are marked, the geometric blocks are connected in series by connecting rods, are sequentially connected and arranged at equal intervals, and face upwards with different geometric shapes;

The universal bubble level is arranged on the center base.

4. A spinal imaging assisting positioning apparatus in accordance with claim 3 wherein the geometric blocks are arranged in series, the geometric block sections being various regular or irregular geometric blocks with the geometric faces facing upward; the shapes of two adjacent geometric blocks are not identical.

5. The auxiliary positioning device for spine radiography according to claim 4, wherein the geometric block has a width of 2 mm-3 mm; the thickness is 2-5 mm; the distance between the geometric shape blocks is 1-3 mm.

6. The auxiliary positioning device for shooting of the spine as in claim 4, wherein the connecting rod and the geometric blocks on the connecting rod are integrally formed by carbon steel.

7. The auxiliary positioning device for shooting of a spinal column according to one of claims 1 to 6, wherein grooves along the length direction are formed in the upper end surfaces of four sides of the main body frame and serve as sliding grooves;

8. The auxiliary positioning device for the spine shooting of claim 7, wherein the upper end surface of the cube is provided with a threaded hole, and the bottom of the wire loop is provided with a threaded rod; the wire ring and the cube are detachably connected through threads;

The top of the wire ring is provided with a notch, the measuring wire is a metal wire, the two ends of the measuring wire are preset with lantern rings, and the measuring wire is detachably sleeved on the wire ring through the notch of the wire ring.

9. The auxiliary positioning device for shooting of a spine according to any one of claims 1 to 6, wherein scales are also arranged on the side frame of the main body frame for assisting in positioning the slide block on the opposite side frame, and the measuring line is ensured to be parallel to the cross rod/longitudinal rod of the cross positioning frame.

10. The auxiliary positioning device for shooting of a spinal column according to one of claims 1 to 6, further comprising a needle application angle positioning device, which comprises an angle dial, a pointer, a fixing knob and an auxiliary fixing block;