Drilling aiming device for orthopedic surgery

Abstract

The invention discloses a drilling aiming device for orthopedic surgery, relates to the technical field of orthopedic surgery, and provides the following scheme that the drilling aiming device comprises cross rods, a rectangular mounting plate is arranged between a pair of cross rods, pressure sensors are mounted at the four corners of the mounting plate, and first electric push rods are connected between the stress ends of the pressure sensors and the cross rods; a vertical sleeve is slidably connected to the mounting plate, a rotating cylinder is rotatably connected to the mounting plate, a slidable scale ring is rotatably connected to the rotating cylinder, a supporting frame is mounted below the cross rod, and an abutting block is connected to the supporting frame; the leg is clamped through the abutting block, stability is improved, the mounting plate is pulled in any direction, under the action of the pressure sensor, the first electric push rod shrinks or stretches, the movement angle of the mounting plate is conveniently controlled manually, the scale ring rotates during punching, when the zero scale on the scale ring reaches the pointer, it is indicated that the punching depth is the needed depth, and the punching efficiency is improved. The punching depth is effectively limited, and operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic surgery, and in particular to a drilling aiming device for orthopedic surgery. Background Art

[0002] In the biomedical industry, various surgical instruments increase the convenience of surgery and are needed in orthopedic surgery. When repairing the bone in the fractured area of ​​the patient, the surgical process generally requires drilling in the fractured bone area. In order to ensure the accuracy of drilling, an aiming device is needed to assist. Its main function is to position the drill before drilling and guide the drill bit during the drilling process.

[0003] After searching, the Chinese invention patent, announcement number: CN117982193B, named: A drilling aiming device for orthopedic surgery. This invention uses an indicator rod to compare with the patient's fracture gap area, making it easier for medical staff to align the guide tube perpendicular to the gap in the patient's fracture area, thereby improving aiming accuracy and thus improving the quality of subsequent drilling.

[0004] However, in actual use, the above and similar technical solutions still have some problems:

[0005] 1. In the existing equipment structure, the leg limit mechanism is missing. When the legs move, the lack of effective restraint and positioning will lead to poor overall stability of the equipment during the drilling process, which in turn causes the drilling position to shift, making it impossible to operate accurately according to the preset position, seriously affecting the accuracy and quality of drilling;

[0006] 2. When using multiple curved bars to adjust the angle of the casing, the adjustment method has obvious disadvantages. The adjustment process requires horizontal adjustment first, and then vertical adjustment. The operation process is complicated and has many steps. This step-by-step adjustment method makes it difficult for the operator to accurately adjust the casing to the required angle in one operation, reducing work efficiency and adjustment accuracy.

[0007] 3. The current equipment is not equipped with a drilling depth recording and limiting mechanism. During the drilling operation, the operator cannot intuitively obtain the drilling depth information, and it is difficult to accurately control the drilling depth. It is easy for the drilling to be too deep or too shallow, affecting the patient's later recovery effect. Summary of the Invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a drilling aiming device for orthopedic surgery that is convenient for controlling the drilling depth, fixing the legs, and adjusting the angle.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A drilling aiming device for orthopedic surgery, comprising a pair of crossbars, an aiming mechanism connected to the crossbars, the aiming mechanism comprising a mounting plate, a rectangular mounting plate disposed between the pair of crossbars, pressure sensors mounted at the four corners of the mounting plate, a first electric push rod connected between the force-bearing end of the pressure sensor and the crossbar, a vertical sleeve slidably connected to the mounting plate, a locking mechanism for limiting the position of the first electric push rod connected to the crossbar, and a controller provided for the first electric push rod;

[0011] The mounting plate is connected to an indicating mechanism, which includes a rotating cylinder, which is rotatably connected to the mounting plate, the rotating cylinder being coaxial with the sleeve, a driving assembly being connected between the rotating cylinder and the sleeve, a slidable scale ring being rotatably connected to the rotating cylinder, a first internal gear being mounted on the inner wall of the scale ring, a fourth gear being mounted on the outer wall of the rotating cylinder, the fourth gear being meshed with the first internal gear, a pointer being mounted on the mounting plate, a stopper being mounted below the zero scale line of the scale ring, and a top block being connected to the mounting plate that abuts against the stopper;

[0012] The crossbar is connected with a fixing mechanism, which includes a support frame. The support frame is installed below the crossbar, and a pair of support frames are connected to the sides close to each other with a resistance block. A telescopic rod is installed between the pair of crossbars.

[0013] Preferably, the telescopic end and the driving end of the first electric push rod are both equipped with a socket ball, and the socket ball is rotatably connected to a socket block, and the socket blocks at both ends of the first electric push rod are respectively fixed to the force-bearing end of the cross bar and the pressure sensor.

[0014] Preferably, the locking mechanism includes a sliding bar, a sliding bar extending outward is slidably connected to the cross bar, the cross bar is slidably connected to a top column at each socket block, the top column is used for socket ball contact, the sliding bar is fixedly connected to a protrusion at each top column, the protrusion is arc-shaped, and the arc-shaped end of the protrusion contacts the top column.

[0015] Preferably, a first spring is installed between the top column and the cross bar, and a second rough wall is provided at one end of the socket close to the top column. The end of the top column that contacts the socket is in an arc-shaped concave surface, and the inner wall of the arc-shaped concave surface where the top column contacts the socket is provided with a first rough wall, and the second rough wall contacts the first rough wall.

[0016] Preferably, the sliding bar is connected to a telescopic mechanism, and the telescopic mechanism includes a fixed bar, a fixed bar is provided between the protruding ends of a pair of sliding bars, the fixed bar is rotatably connected to the first gear, the sliding bar is equipped with a first rack, the first rack is slidably connected to the fixed bar, a pair of first racks are respectively engaged with the two ends of the first gear, a first motor is installed on one side of the fixed bar, the first gear is installed on the output shaft of the first motor, a second electric push rod is installed on the telescopic rod, and one side of the fixed bar is fixed to the telescopic end of the second electric push rod.

[0017] Preferably, the driving assembly includes a second rack, a parallel second rack is installed on the outer wall of the sleeve, a second gear is rotatably connected to the mounting plate, the second gear is meshed with the second rack, a first bevel gear that rotates synchronously is installed on the shaft end of the second gear, a third gear is rotatably connected to the mounting plate, a second bevel gear that rotates synchronously is installed on the shaft end of the third gear, the second bevel gear is meshed with the first bevel gear, a second internal gear is rotatably connected to the mounting plate, and the bottom end of the rotating cylinder is fixedly connected to the second internal gear.

[0018] Preferably, a limiting assembly is connected to the mounting plate, and the limiting assembly includes a support, a support is installed on the mounting plate, the top block is slidably connected to the support, a pair of slots are provided on the top block, a latch is slidably connected to the support, a second spring is installed between the support and the latch, the latch extends into one of the slots through the second spring, and the end of the latch extending into the slot is arc-shaped, a stop bar is installed on the end of the top block close to the rotating cylinder, and the top block contacts the stop block through the stop bar.

[0019] Preferably, a reset mechanism is connected to the rotating cylinder, and the reset mechanism includes a pressure plate. The outer wall of the rotating cylinder is slidably connected with an annular pressure plate, and a third spring is installed between the pressure plate and the rotating cylinder. The bottom end of the pressure plate contacts the top end of the first internal gear.

[0020] Preferably, a fixing plate is installed on the support frame, a sliding rod is slidably connected to the fixing plate, the interference block is fixed on the sliding rod, a knob is threadedly connected to the fixing plate, and one end of the knob is rotatably connected to the interference block.

[0021] Preferably, a chassis is installed on the bottom side of the mounting plate, and four lasers arranged in a cross shape are installed on the bottom side of the chassis, and the cross-shaped intersection of the lasers intersects with the axis of the sleeve.

[0022] Compared with the prior art, the present invention provides a drilling aiming device for orthopedic surgery, which has the following beneficial effects:

[0023] 1. This drilling aiming device for orthopedic surgery drives a pair of support frames toward each other, causing the resistance block to fit against the side wall of the leg, thereby holding the leg tightly. Turning the knob pushes the resistance block to slide, and the slide rod is used to support the resistance block, thereby facilitating adaptation to patients of different body shapes and increasing practicality.

[0024] 2. The drilling aiming device for orthopedic surgery can bend the mounting plate in any direction to give it a movement trend, thereby applying pressure to the pressure sensor. When the mounting plate moves away from the first electric push rod, the pressure sensor detects that the pressure becomes smaller, and drives the first electric push rod to extend so that the pressure is maintained within a certain range and the first electric push rod does not move. Similarly, when the mounting plate approaches one of the first electric push rods, the first electric push rod will contract. Through the cooperation of multiple first electric push rods and pressure sensors, the mounting plate can be moved to the required angle. The length of the first electric push rod remains unchanged after power is cut off, thereby supporting the mounting plate, making it easier to drill holes. The movement angle of the mounting plate can be manually controlled, which is convenient to operate and easy to control the angle.

[0025] 3. The drilling aiming device for orthopedic surgery guides the drill bit through the casing during the drilling process. The drill bit end of the electric drill contacts the casing, and the electric drill is pushed to contact the bone surface. The casing moves downward, and the movement of the casing drives the rotating cylinder to rotate. The scale ring is pulled upward to release the limit on the scale ring. The scale ring is rotated to determine the required drilling depth so that the drilling depth value on the scale ring points to the pointer. The scale ring is released and reset. The drill bit is pushed to drill. The casing continues to slide, thereby driving the rotating cylinder and the scale ring to rotate. When the zero scale on the scale ring reaches the pointer, it indicates that the drilling depth is the required depth. At this time, the block contacts the stop bar, thereby limiting the continued rotation of the scale ring and limiting the downward movement of the casing, thereby effectively limiting the drilling depth, avoiding excessive drilling, and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A stereoscopic view of a drilling aiming device for orthopedic surgery proposed by the present invention;

[0027] Figure 2 A view of the telescopic rod connection structure of the present invention;

[0028] Figure 3 A view of a crossbar connection structure of the present invention;

[0029] Figure 4 A view of the sliding bar connection structure of the present invention;

[0030] Figure 5 A view of a ball-and-socket connection structure of the present invention;

[0031] Figure 6 A view of a first electric push rod connection structure of the present invention;

[0032] Figure 7 A view of the mounting plate connection structure of the present invention;

[0033] Figure 8 A view of the rotary drum connection structure of the present invention;

[0034] Figure 9 A view of the scale ring connection structure of the present invention;

[0035] Figure 10 A view of a pressure plate connection structure of the present invention;

[0036] Figure 11 This is a view of the top block connection structure of the present invention.

[0037] In the figure: 1, crossbar; 2, telescopic mechanism; 21, first rack; 22, fixing bar; 23, first motor; 24, first gear; 25, telescopic rod; 3, fixing mechanism; 31, support frame; 32, fixing plate; 33, resistance block; 34, slide bar; 35, knob; 4, controller; 5, aiming mechanism; 51, mounting plate; 52, first electric push rod; 53, socket block; 54, socket ball; 55, pressure sensor; 56, sleeve; 6, chassis; 7, locking mechanism; 71, slide bar; 72, second electric push rod; 73, bump; 74, first rough wall; 75, first spring; 76, first Second rough wall; 77, top column; 8, laser; 9, indicating mechanism; 91, limiting assembly; 911, top block; 912, support; 913, second spring; 914, stop bar; 915, latch; 916, slot; 92, stop block; 93, pointer; 94, first internal gear; 95, driving assembly; 951, second rack; 952, second gear; 953, first bevel gear; 954, second bevel gear; 955, third gear; 956, second internal gear; 96, rotating cylinder; 97, scale ring; 98, fourth gear; 99, reset mechanism; 991, pressure plate; 992, third spring. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] Example 1: Reference Figures 1-11 , a drilling aiming device for orthopedic surgery, includes a cross bar 1, which is provided with a pair of cross bars, and an aiming mechanism 5 is connected to the cross bar 1. The aiming mechanism 5 includes a mounting plate 51, and a rectangular mounting plate 51 is provided between the pair of cross bars 1. Pressure sensors 55 are installed at the four corners of the mounting plate 51, and a first electric push rod 52 is connected between the force-bearing end of the pressure sensor 55 and the cross bar 1. A vertical sleeve 56 is slidably connected to the mounting plate 51, and a locking mechanism 7 for limiting the first electric push rod 52 is connected to the cross bar 1. The first electric push rod 52 is equipped with a controller 4, so that when the position of the mounting plate 51 is manually adjusted, it is convenient to detect the applied pressure through the pressure sensor 55, thereby controlling the operation of the first electric push rod 52, thereby realizing the angle adjustment of the mounting plate 51. When the first electric push rod 52 is closed, the length extended by the first electric push rod 52 will remain unchanged, thereby supporting the mounting plate 51 and ensuring that the angle of the mounting plate 51 remains unchanged.

[0041] In the present invention, the telescopic end and the driving end of the first electric push rod 52 are both equipped with a socket ball 54, and the socket ball 54 is rotatably connected to the socket block 53. The socket blocks 53 at both ends of the first electric push rod 52 are respectively fixed on the force-bearing ends of the cross bar 1 and the pressure sensor 55, thereby facilitating the swing of the first electric push rod 52.

[0042] In the present invention, the locking mechanism 7 includes a sliding bar 71, and the cross bar 1 is slidably connected to a protruding sliding bar 71. The cross bar 1 is slidably connected to a top column 77 at each socket block 53. The top column 77 is used to abut against the socket ball 54. The sliding bar 71 is fixedly connected to a protrusion 73 at each top column 77. The protrusion 73 is arc-shaped, and the arc-shaped end of the protrusion 73 abuts against the top column 77.

[0043] In the present invention, a first spring 75 is installed between the top column 77 and the cross bar 1, and a second rough wall 76 is provided at one end of the socket 54 close to the top column 77. The end of the top column 77 that contacts the socket 54 is in an arc-shaped concave shape, and the inner wall of the arc-shaped concave surface where the top column 77 contacts the socket 54 is provided with a first rough wall 74. The second rough wall 76 contacts the first rough wall 74, thereby facilitating the limiting of the socket 54. After the socket 54 is limited, it will limit the swing of the first electric push rod 52, thereby achieving the limiting of the first electric push rod 52.

[0044] In the present invention, the sliding bar 71 is connected to the telescopic mechanism 2, and the telescopic mechanism 2 includes a fixed bar 22. A fixed bar 22 is provided between the protruding ends of a pair of sliding bars 71. The fixed bar 22 is rotatably connected to the first gear 24. The sliding bar 71 is equipped with a first rack 21. The first rack 21 is slidably connected to the fixed bar 22. A pair of first racks 21 are respectively engaged with the two ends of the first gear 24. A first motor 23 is installed on one side of the fixed bar 22. The first gear 24 is installed on the output shaft of the first motor 23. A second electric push rod 72 is installed on the telescopic rod 25. One side of the fixed bar 22 is fixed to the telescopic end of the second electric push rod 72, thereby increasing friction and being able to lock the socket ball 54.

[0045] In the present invention, a chassis 6 is installed on the bottom side of the mounting plate 51, and four lasers 8 arranged in a "cross" shape are installed on the bottom side of the chassis 6. The "cross" intersection of the lasers 8 intersects with the axis of the sleeve 56, thereby facilitating the alignment of the sleeve 56 with the punching position.

[0046] Example 2: Based on Example 1, a drilling aiming device for orthopedic surgery is provided. The mounting plate 51 is connected to an indicating mechanism 9, which includes a rotating cylinder 96. The mounting plate 51 is rotatably connected to the rotating cylinder 96. The rotating cylinder 96 is coaxial with the sleeve 56. A driving assembly 95 is connected between the rotating cylinder 96 and the sleeve 56. A slidable scale ring 97 is rotatably connected to the rotating cylinder 96. The inner wall of the scale ring 97 is mounted with a first internal gear 94. The outer wall of the rotating cylinder 96 is mounted with a fourth gear. Gear 98, the fourth gear 98 is meshed with the first internal gear 94, a pointer 93 is installed on the mounting plate 51, a stopper 92 is installed below the zero scale line of the scale ring 97, and a top block 911 is connected to the mounting plate 51 to interfere with the stopper 92, so that it is convenient to intuitively observe the depth of the drill bit descent, and the scale ring 97 is limited by the top block 911, thereby limiting the position of the casing 56, limiting the depth of the drill bit descent, and facilitating the control of the drilling depth, and the pointer 93 points to the top block 911.

[0047] In the present invention, the driving assembly 95 includes a second rack 951, a parallel second rack 951 is installed on the outer wall of the sleeve 56, a second gear 952 is rotatably connected to the mounting plate 51, the second gear 952 is meshed with the second rack 951, the shaft end of the second gear 952 is mounted with a first bevel gear 953 that rotates synchronously, a third gear 955 is rotatably connected to the mounting plate 51, a second bevel gear 954 is mounted on the shaft end that rotates synchronously, the second bevel gear 954 is meshed with the first bevel gear 953, a second internal gear 956 is rotatably connected to the mounting plate 51, the bottom end of the rotating cylinder 96 is fixedly connected to the second internal gear 956, thereby realizing transmission, and the distance moved by the sleeve 56 is consistent with the scale reading of the rotation of the scale ring 97.

[0048] In the present invention, a limiting component 91 is connected to the mounting plate 51, and the limiting component 91 includes a support 912. The support 912 is installed on the mounting plate 51, and the top block 911 is slidably connected to the support 912. A pair of slots 916 are provided on the top block 911, and a latch 915 is slidably connected to the support 912. A second spring 913 is installed between the support 912 and the latch 915, and the latch 915 extends into one of the slots 916 through the second spring 913. The end of the latch 915 extending into the slot 916 is in an arc shape. A stop bar 914 is installed at one end of the top block 911 close to the rotating cylinder 96, and the top block 911 contacts the stop block 92 through the stop bar 914, thereby facilitating the limiting of the scale ring 97, thereby limiting the distance the sleeve 56 descends, thereby achieving control of the punching depth.

[0049] In the present invention, a reset mechanism 99 is connected to the rotating cylinder 96, and the reset mechanism 99 includes a pressure plate 991. The outer wall of the rotating cylinder 96 is slidably connected with an annular pressure plate 991. A third spring 992 is installed between the pressure plate 991 and the rotating cylinder 96. The bottom end of the pressure plate 991 contacts the top of the first internal gear 94, so that it is easy to automatically reset after the scale ring 97 is pulled, and it is easy to lock so that it can rotate synchronously with the rotating cylinder 96.

[0050] Example 3: Based on Example 2, a drilling aiming device for orthopedic surgery is provided, wherein a fixing mechanism 3 is connected to the cross bar 1, and the fixing mechanism 3 includes a support frame 31. The support frame 31 is installed below the cross bar 1, and a pair of support frames 31 are connected to the sides close to each other with a resistance block 33. A telescopic rod 25 is installed between the pair of cross bars 1, so that the legs can be limited by the resistance block 33 to avoid shaking of the legs during drilling.

[0051] In the present invention, a fixing plate 32 is installed on the support frame 31, a sliding rod 34 is slidably connected to the fixing plate 32, a resistance block 33 is fixed on the sliding rod 34, a knob 35 is threadedly connected to the fixing plate 32, and one end of the knob 35 is rotatably connected to the resistance block 33, so that the position of the resistance block 33 can be adjusted to accommodate people of different body shapes.

[0052] Working principle: When punching the patient's leg bone, a pair of cross bars 1 can be set above the leg, and the first motor 23 is started. The first motor 23 drives the first gear 24 to rotate, thereby driving the pair of first racks 21 to move toward each other, thereby pulling the sliding bar 71. The sliding bar 71 pulls the pair of cross bars 1 closer to each other, and the telescopic rod 25 contracts, thereby driving the pair of support frames 31 closer to each other, driving the interference block 33 to fit the side wall of the leg, thereby holding the leg tightly. The support frame 31 can be locked on the operating table through an external clamp, thereby ensuring that neither the support frame 31 nor the patient's leg can move, thereby ensuring the stability of the punching, and turning the knob 35 to push the interference block 33 to slide. The sliding bar 34 is used to support the interference block 33, thereby facilitating adaptation to patients of different body shapes and increasing practicality.

[0053] The controller 4 can control the operation of each motor and the electric push rod. Insert the drill bit of the electric drill into the sleeve 56. When adjusting the angle, keep the first electric push rod 52 in working state, bend the mounting plate 51 in any direction to give a movement trend, thereby applying pressure to the pressure sensor 55. When the mounting plate 51 is away from one of the first electric push rods 52, the pressure sensor 55 at the end of the first electric push rod 52 will be pulled, thereby detecting that the pressure is reduced, driving the first electric push rod 52 to extend, so that the pressure is maintained within a certain range and the first electric push rod 52 does not move. Similarly, when the mounting plate 51 is close to one of the first electric push rods 52, the first electric push rod 52 will contract. By cooperating with multiple first electric push rods 52 and pressure sensors 55, it is convenient for the mounting plate 51 to be installed. When the movement reaches the required angle, the two ends of the first electric push rod 52 rotate through the socket ball 54 and the socket block 53 to ensure the smoothness of the movement. The laser 8 is started, and the laser is irradiated on the bone to form a "cross" shape. The intersection is the axis of the sleeve 56, that is, the drilling position, which facilitates the determination of the drilling position and angle. After the angle is determined, the first electric push rod 52 is closed and the second electric push rod 72 is started, thereby pushing the fixing bar 22, driving the sliding bar 71 to extend, and pushing the top column 77 through the protrusion 73. The first spring 75 is compressed, so that the first rough wall 74 is tightly against the second rough wall 76, thereby limiting the socket ball 54 at one end and limiting its rotation, thereby limiting the rotation of the first electric push rod 52 and locking the mounting plate 51, thereby ensuring that the drill bit will not deviate, facilitating drilling.

[0054] During the drilling process, the drill bit is guided by the sleeve 56 to ensure that it does not deviate. When the drill bit is pushed, the drill end of the electric drill collides with the sleeve 56. Continuing to push makes the drill bit collide with the bone surface. When the sleeve 56 moves, it drives the second rack 951 to move downward, thereby driving the second gear 952 to rotate, driving the first bevel gear 953 and the second bevel gear 954 to rotate, and calmly driving the third gear 955 and the second internal gear 956 to rotate, driving the rotating cylinder 96 to rotate, pulling the scale ring 97 upward, the pressure plate 991 moves upward, the third spring 992 is compressed, the first internal gear 94 and the fourth gear 98 are disengaged, thereby releasing the limit on the scale ring 97, rotating the scale ring 97 to determine the depth of the hole to be drilled, so that the drilling depth value on the scale ring 97 points to the pointer 93 , loosen the scale ring 97, the scale ring 97 resets, the first internal gear 94 and the fourth gear 98 engage, so that the scale ring 97 rotates synchronously with the rotating cylinder 96, pushing the top block 911, the stop bar 914 extends, and the other slot 916 moves to the bayonet 915. The second spring 913 pushes the limit, and the pointer 93 is installed on the mounting plate 51 and the position remains unchanged. The drill bit is pushed to punch, and the sleeve 56 continues to slide, thereby driving the rotating cylinder 96 and the scale ring 97 to rotate. When the zero scale on the scale ring 97 reaches the pointer 93, it indicates that the punching depth is the required depth. At this time, the stop block 92 conflicts with the stop bar 914, thereby limiting the continued rotation of the scale ring 97 and limiting the downward movement of the sleeve 56, thereby effectively limiting the punching depth, avoiding excessive punching, and convenient operation.

[0055] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A drilling aiming device for orthopedic surgery, comprising a crossbar (1), characterized in that: The cross bars (1) are provided with a pair, and an aiming mechanism (5) is connected to the cross bars (1), and the aiming mechanism (5) includes a mounting plate (51), and a rectangular mounting plate (51) is provided between the pair of cross bars (1), and pressure sensors (55) are installed at the four corners of the mounting plate (51), and a first electric push rod (52) is connected between the force-bearing end of the pressure sensor (55) and the cross bar (1), and a vertical sleeve (56) is slidably connected to the mounting plate (51), and a locking mechanism (7) for limiting the first electric push rod (52) is connected to the cross bar (1), and the first electric push rod (52) is equipped with a controller (4); The mounting plate (51) is connected to an indicating mechanism (9), the indicating mechanism (9) comprising a rotating cylinder (96), the mounting plate (51) being rotatably connected to the rotating cylinder (96), the rotating cylinder (96) being coaxial with the sleeve (56), a driving assembly (95) being connected between the rotating cylinder (96) and the sleeve (56), the rotating cylinder (96) being rotatably connected to a slidable scale ring (97), the inner wall of the scale ring (97) being mounted with a first internal gear (94), the outer wall of the rotating cylinder (96) being mounted with a fourth gear (98), the fourth gear (98) being meshed with the first internal gear (94), the mounting plate (51) being mounted with a pointer (93), a stopper (92) being mounted below the zero scale line of the scale ring (97), and the mounting plate (51) being connected with a top block (911) that contacts the stopper (92); A fixing mechanism (3) is connected to the crossbar (1), and the fixing mechanism (3) includes a support frame (31). The support frame (31) is installed below the crossbar (1), and a pair of support frames (31) are connected to a contact block (33) on their mutually adjacent sides. A telescopic rod (25) is installed between the pair of crossbars (1).

2. The drilling aiming device for orthopedic surgery according to claim 1, characterized in that: The telescopic end and the driving end of the first electric push rod (52) are both equipped with a socket ball (54), and the socket ball (54) is rotatably connected to a socket block (53). The socket blocks (53) at both ends of the first electric push rod (52) are respectively fixed to the cross bar (1) and the force-bearing end of the pressure sensor (55).

3. The drilling aiming device for orthopedic surgery according to claim 2, characterized in that: The locking mechanism (7) includes a sliding bar (71), the cross bar (1) is slidably connected to a protruding sliding bar (71), the cross bar (1) is slidably connected to a top column (77) at each socket block (53), the top column (77) is used for the socket ball (54) to abut, the sliding bar (71) is fixedly connected to a protrusion (73) at each top column (77), the protrusion (73) is arc-shaped, and the arc-shaped end of the protrusion (73) abuts against the top column (77).

4. The drilling aiming device for orthopedic surgery according to claim 3, characterized in that: A first spring (75) is installed between the top column (77) and the cross bar (1); a second rough wall (76) is provided at one end of the socket ball (54) close to the top column (77); an end of the top column (77) that contacts the socket ball (54) is in an arc-shaped concave shape; an inner wall of the arc-shaped concave surface where the top column (77) contacts the socket ball (54) is provided with a first rough wall (74); and the second rough wall (76) contacts the first rough wall (74).

5. The drilling aiming device for orthopedic surgery according to claim 3, characterized in that: The sliding bar (71) is connected to a telescopic mechanism (2), and the telescopic mechanism (2) includes a fixed bar (22). A fixed bar (22) is provided between the protruding ends of a pair of sliding bars (71). A first gear (24) is rotatably connected to the fixed bar (22). A first rack (21) is installed on the sliding bar (71). The first rack (21) is slidably connected to the fixed bar (22). The pair of first racks (21) are respectively engaged with the two ends of the first gear (24). A first motor (23) is installed on one side of the fixed bar (22). The first gear (24) is installed on the output shaft of the first motor (23). A second electric push rod (72) is installed on the telescopic rod (25), and one side of the fixed bar (22) is fixed to the telescopic end of the second electric push rod (72).

6. The drilling aiming device for orthopedic surgery according to claim 1, characterized in that: The driving assembly (95) includes a second rack (951), a parallel second rack (951) is installed on the outer wall of the sleeve (56), a second gear (952) is rotatably connected to the mounting plate (51), the second gear (952) is meshed with the second rack (951), a first bevel gear (953) that rotates synchronously is installed on the shaft end of the second gear (952), a third gear (955) is rotatably connected to the mounting plate (51), a second bevel gear (954) that rotates synchronously is installed on the shaft end of the third gear (955), the second bevel gear (954) is meshed with the first bevel gear (953), a second internal gear (956) is rotatably connected to the mounting plate (51), and the bottom end of the rotating cylinder (96) is fixedly connected to the second internal gear (956).

7. The drilling aiming device for orthopedic surgery according to claim 1, characterized in that: The mounting plate (51) is connected to a limiting assembly (91), the limiting assembly (91) includes a support (912), the mounting plate (51) is mounted with a support (912), the top block (911) is slidably connected to the support (912), the top block (911) is provided with a pair of slots (916), a latch (915) is slidably connected to the support (912), a second spring (913) is mounted between the support (912) and the latch (915), the latch (915) extends into one of the slots (916) through the second spring (913), and one end of the latch (915) extending into the slot (916) is in an arc shape, a stop bar (914) is mounted on one end of the top block (911) close to the rotating cylinder (96), and the top block (911) contacts the stop block (92) through the stop bar (914).

8. The drilling aiming device for orthopedic surgery according to claim 1, characterized in that: The rotating cylinder (96) is connected to a reset mechanism (99), and the reset mechanism (99) includes a pressure plate (991). The outer wall of the rotating cylinder (96) is slidably connected to an annular pressure plate (991). A third spring (992) is installed between the pressure plate (991) and the rotating cylinder (96). The bottom end of the pressure plate (991) contacts the top end of the first internal gear (94).

9. The drilling aiming device for orthopedic surgery according to claim 1, characterized in that: A fixing plate (32) is mounted on the support frame (31), a sliding rod (34) is slidably connected to the fixing plate (32), the interference block (33) is fixed to the sliding rod (34), a knob (35) is threadedly connected to the fixing plate (32), and one end of the knob (35) is rotatably connected to the interference block (33).

10. The drilling aiming device for orthopedic surgery according to claim 1, characterized in that: A chassis (6) is mounted on the bottom side of the mounting plate (51), and four lasers (8) arranged in a "cross" shape are mounted on the bottom side of the chassis (6), wherein the "cross" intersection of the lasers (8) intersects with the axis of the sleeve (56).

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