Drilling Assembly for Tibial Fracture

Abstract

The present invention provides a drilling assembly for tibial fractures, which relates to the field of orthopedic surgery and includes a lower backing plate. Outer traction frames are provided on both sides of the lower backing plate, and an outer bracket is provided on the outside of the lower backing plate. A drilling module is slidably arranged on the top of the outer bracket. A tail worm wheel shaft is fixedly arranged at the tail end of the outer traction frame, and an inner runner is rotatably arranged on the outer traction frame. The inner runner is rotatably connected to an inner connecting rope. A reset coil spring is fixedly arranged at the tail end of the first tooth scroll shaft, and the gear at the tail end of the first tooth scroll shaft is meshed with the tail gear shaft. The tail gear shaft is fixedly connected to the first traction plate. By using the first traction plate and the outer traction frame to traction the surrounding skin and soft tissues of the tibial fracture site to the surrounding, it is convenient to expose the internal tibia, without the need for manual traction operation by additional personnel, reducing the configuration of personnel for skin and soft tissue traction, and solving the problem that the configuration of special personnel for skin and soft tissue traction leads to the limitation of the number of surgeries due to the number of people.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic surgery, and particularly to a drilling assembly for tibial fractures. Background Art

[0002] The tibia is an important weight-bearing bone in the lower limb of the human body. The tibia is also one of the common fracture sites. When the tibia is hit by a heavy object, impacted, or even run over by a wheel, fractures, even comminuted fractures, may occur. After a comminuted fracture of the tibia occurs, a drilling device needs to be used to drill holes in the tibia. The fracture site of the tibia is re-assembled and fixed and assisted in supporting the body weight through the fixed steel plate at the drilling position.

[0003] During the drilling operation of the tibia, it is necessary to manually traction the external tissues to both sides first to expose the internal tibia and avoid the external tissues from hindering the drilling operation. The traction of the skin and soft tissues requires the allocation of specialized personnel, and the number of surgical assistants needs to be ensured. As a result, the number of personnel limits the number of surgeries, and the number of surgeries that can be carried out simultaneously is limited by the number of people. Moreover, there is less space in the contact part between the personnel and the tissue traction, which is not convenient for adsorbing and wiping bleeding. The work of cleaning the bleeding at the contact part between the personnel and the tissue traction is relatively difficult. Summary of the Invention

[0004] In view of this, the present invention provides a drilling assembly for tibial fractures to solve the problem that it is necessary to manually traction the external tissues to both sides to avoid the external tissues from hindering the drilling operation. The traction of the skin and soft tissues requires the allocation of specialized personnel, and the number of surgical assistants needs to be ensured. As a result, the number of personnel limits the number of surgeries, and the number of surgeries that can be carried out simultaneously is limited by the number of people.

[0005] The present invention provides a drilling assembly for tibial fractures, specifically including: a lower backing plate, with outer traction frames provided on both sides of the lower backing plate, an outer bracket provided on the outside of the lower backing plate, a drilling module slidably arranged on the top of the outer bracket, a worm shaft rotatably arranged at the lower part of the lower backing plate, the head and tail ends of the worm shaft penetrating to both sides of the lower backing plate, a side slide rail fixedly arranged on the outer side of the upper part of the lower backing plate, the outer traction frame being an inverted L-shaped structure, with a tail worm wheel shaft fixedly arranged at the tail end of the outer traction frame, inner rotating wheels rotatably arranged at the head, middle and tail ends of the outer traction frame, the inner rotating wheels being rotationally connected to an inner connecting rope, the inner connecting rope being curled and wound around the outside of the first tooth scroll, a return coil spring fixedly arranged at the tail end of the first tooth scroll, the gear at the tail end of the first tooth scroll meshing with a tail gear shaft, the tail gear shaft being fixedly connected to a first pulling plate, the bottom of the outer bracket being connected to a first sliding member through a damping rotating shaft, a first inner tooth groove tube being slidably sleeved on the lower part of the first sliding member, the tail end of the first inner tooth groove tube being fixedly connected to a second sliding member, a second inner tooth groove tube being slidably sleeved inside the second sliding member, the tail end of the second inner tooth groove tube being connected to a tail sliding frame through a damping rotating shaft, the tail sliding frame being slidably connected to the side slide rail, a side screw being screwed on the side of the drilling module, an upper sliding rod being slidably arranged through the top of the drilling module, the head end of the upper sliding rod being fixedly connected to a front protection ring, the middle part of the upper sliding rod being fixedly connected to the head end of an upper support elastic member, a drill bit being arranged at the front part of the drilling module, and a motor inside the drilling module driving the drill bit to rotate.

[0006] Further, damping sliders are slidably arranged at the tail ends of the first sliding member and the second sliding member, the first sliding member and the second sliding member are both fixedly connected with tail support elastic members, the tail ends of the damping sliders are fixedly connected to the head ends of the tail support elastic members, the inclined surfaces at the head ends of the damping sliders are slidably engaged with the grooves of the first inner tooth groove tube and the second inner tooth groove tube, and the damping sliders fix the moving distances of the first inner tooth groove tube and the second inner tooth groove tube.

[0007] Further, the tail end of the return coil spring is fixedly connected to the outer traction frame, the first tooth scroll is rotationally connected to the outer traction frame, the tail end of the tail gear shaft is rotationally connected to the head end of the outer traction frame. When the outer traction frame rotates outward around the tail worm wheel shaft to the outside of the lower backing plate, the inner connecting rope pulls the first tooth scroll to rotate, and the first pulling plate rotates towards the side of the outer traction frame.

[0008] Further, the tail worm wheel shaft is rotationally connected to the outside of the lower backing plate, the worm at the tail end of the tail worm wheel shaft meshes with the spiral teeth of the worm shaft, and the spiral teeth at both the head and tail ends of the worm shaft mesh with the tail worm wheel shaft.

[0009] Further, the inner connecting rope bends and turns along the inner rotating wheel, the inner connecting rope forms an L-shaped bend to adapt to the shape of the outer traction frame, the tail end of the inner connecting rope is fixedly connected to the lower backing plate, and the tail end of the inner connecting rope is above the tail worm wheel shaft.

[0010] Further, the front protection ring is a ring structure, the front protection ring is aligned with the center of the drill bit, the tail end of the upper support elastic member is fixedly connected to the drilling module, and the tail end of the side screw is rotationally connected to the outer bracket.

[0011] Beneficial effects

[0012] 1. When performing the drilling operation on the tibia, the present invention uses the first traction plate and the outer traction frame to traction the surrounding skin and soft tissues around the tibia fracture site to the periphery, facilitating the exposure of the internal tibia. There is no need for manual traction operation by additional personnel, reducing the configuration of personnel for skin and soft tissue traction, reducing the number of surgical assistants, and enabling more surgeries to be allocated to personnel when there are more fracture surgeries, which is beneficial for the rotation and rest of medical staff, reducing the difficulty of shift scheduling and extending the rest time.

[0013] 2. While the outer traction frame rotates and tractions outward, the inner connecting rope pulls the first gear scroll to rotate. The first gear scroll drives the tail gear shaft and the first traction plate to rotate. The first traction plate rotates towards the outer traction frame side to hook and clamp the soft tissues, avoiding the situation where the soft tissues are detached and need to be re-tracted while the outer traction frame rotates and tractions outward, and avoiding the reset interference of the tissue detachment during the surgical drilling traction.

[0014] 3. The clamping operation of the first traction plate and the outer traction frame on the soft tissues can clamp the blood vessels of the tissues, reducing the bleeding volume at the traction site, avoiding the situation where the gaps at the contact parts of the first traction plate, the outer traction frame and the traction tissues are small and inconvenient for blood absorption and wiping, and reducing the workload of personnel for cleaning the bleeding.

[0015] 4. The front protection ring of the present invention can first determine the position of the tibia to determine the drilling position. The front protection ring surrounds the drill bit, and the bone chips generated by the drill bit are inside the front protection ring, avoiding the dispersion of bone chips around, and making it more convenient for the later collection and treatment of bone chips. Brief description of the drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings:

[0019] Figure 1 is the three-dimensional structure schematic diagram of the drilling component for tibia fracture of the embodiment of the present invention.

[0020] Figure 2 is the structure schematic diagram of the lower backing plate of the drilling component for tibia fracture of the embodiment of the present invention.

[0021] Figure 3 is the longitudinal sectional structure schematic diagram of the outer traction frame of the drilling component for tibia fracture of the embodiment of the present invention.

[0022] Figure 4 The enlarged schematic structural view of part A of the drilling component for tibial fracture in the embodiment of the present invention Figure 3 is shown in the figure

[0023] Figure 5 The schematic structural view of the outer bracket of the drilling component for tibial fracture in the embodiment of the present invention

[0024] Figure 6 The enlarged schematic structural view of part B of the drilling component for tibial fracture in the embodiment of the present invention Figure 5 is shown in the figure

[0025] Figure 7 The schematic structural view of the drilling module of the drilling component for tibial fracture in the embodiment of the present invention

[0026] Figure 8 The schematic structural view of the upper sliding rod of the drilling component for tibial fracture in the embodiment of the present invention

[0027] Figure 9 The longitudinal sectional schematic structural view of the first sliding member and the second sliding member of the drilling component for tibial fracture in the embodiment of the present invention

[0028] List of reference numerals

[0029] 1. Lower backing plate; 101. Worm shaft; 102. Side slide rail; 2. Outer traction frame; 201. Tail worm wheel shaft; 202. Inner connecting rope; 203. Inner runner; 204. Head traction plate; 205. Tail gear shaft; 206. Head tooth reel; 207. Reset coil spring; 3. Outer bracket; 301. First sliding member; 302. Damping slider; 303. First inner toothed groove tube; 304. Second sliding member; 305. Second inner toothed groove tube; 306. Tail slide frame; 307. Tail support elastic member; 4. Drilling module; 401. Side screw; 402. Front protection ring; 403. Upper sliding rod; 404. Upper support elastic member; 405. Drill bit Detailed implementation manners

[0030] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components

[0031] Embodiment: Please refer to Figures 1 to 9 as shown in

[0032] The present invention provides a drilling assembly for tibial fractures, including a lower backing plate 1. A worm shaft 101 is rotatably arranged at the lower part of the lower backing plate 1, and the head and tail ends of the worm shaft 101 penetrate to both sides of the lower backing plate 1. A side slide rail 102 is fixedly arranged on the outer side of the upper part of the lower backing plate 1. The leg of the patient is placed on the top of the lower backing plate 1. Outer traction frames 2 are arranged on both sides of the lower backing plate 1. The outer traction frame 2 is of an inverted L-shaped structure. A tail worm wheel shaft 201 is fixedly arranged at the tail end of the outer traction frame 2. Inner runners 203 are rotatably arranged at the head, middle and tail ends of the outer traction frame 2. The inner runner 203 is rotatably connected with an inner connecting rope 202. The head end of the inner connecting rope 202 is curled and wound around the outer side of the first tooth scroll 206. A reset coil spring 207 is fixedly arranged at the tail end of the first tooth scroll 206. The gear at the tail end of the first tooth scroll 206 is meshed and connected with a tail gear shaft 205. The tail gear shaft 205 is fixedly connected with a first traction plate 204. The first traction plate 204 is of a plate structure or can also be of an arc-shaped plate structure. The tail worm wheel shaft 201 is rotatably connected with the outer side of the lower backing plate 1. The worm wheel at the tail end of the tail worm wheel shaft 201 is meshed with the spiral teeth of the worm shaft 101. The spiral teeth at both the head and tail ends of the worm shaft 101 are meshed with the tail worm wheel shaft 201. The worm shaft 101 drives the two opposite tail worm wheel shafts 201 to rotate simultaneously. The two outer traction frames 2 rotate outward simultaneously to stretch the tissue. The tail worm wheel shafts 201 of the outer traction frames 2 on the same side can also be fixedly connected, so that the worm shaft 101 can drive the four outer traction frames 2 to rotate, eliminating the need for one-by-one operation by personnel, shortening the operation process and accelerating the traction speed;

[0033] An outer bracket 3 is arranged on the outer side of the lower backing plate 1. The outer bracket 3 is of a slide rail frame structure. A drilling module 4 slides on the top slide rail of the outer bracket 3. A side screw 401 is screwed on the side of the drilling module 4. An upper slide rod 403 penetrates and slides through the top of the drilling module 4. The head end of the upper slide rod 403 is fixedly connected with a front protection ring 402. The middle of the upper slide rod 403 is fixedly connected with the head end of an upper support elastic member 404. A drill bit 405 is arranged at the front part of the drilling module 4. The motor inside the drilling module 4 drives the drill bit 405 to rotate. The front protection ring 402 can first contact the tibia to determine the drilling position. After determining the drilling position, the upper slide rod 403 compresses the upper support elastic member 404. By rotating the side screw 401, the drilling module 4 moves axially along the outer thread of the side screw 401 along the outer bracket 3. The rotation of the side screw 401 makes the moving range of the drilling module 4 and the drill bit 405 more convenient and controllable, enabling more delicate fine-tuning and eliminating the need for personnel to hold it by hand, reducing the operation burden of personnel.

[0034] Among them, the inner connecting rope 202 bends and turns along the inner runner 203. The inner connecting rope 202 is bent in an L shape to adapt to the shape of the outer traction frame 2. The tail end of the inner connecting rope 202 is fixedly connected to the lower backing plate 1. The tail end of the inner connecting rope 202 is above the tail worm wheel shaft 201. The inner connecting rope 202 can be made of flexible metal wire or other non-elastic flexible rope structures. When the outer traction frame 2 rotates outward for traction, the distance between the inner connecting rope 202 and the lower backing plate 1 increases. The inner connecting rope 202 pulls the first tooth scroll 206 to rotate. The first tooth scroll 206 meshes with and drives the tail gear shaft 205 and the first traction plate 204 to rotate. The first traction plate 204 rotates around the tail gear shaft 205 towards the outer traction frame 2 to hook and clamp the soft tissue, avoiding the situation where the soft tissue detaches during the outward rotation and traction of the outer traction frame 2 and requires re-traction, and avoiding the reset interference situation of tissue detachment during surgical drilling and traction.

[0035] Among them, the tail end of the reset coil spring 207 is fixedly connected to the outer traction frame 2. The first tooth scroll 206 is rotatably connected to the outer traction frame 2. The tail end of the tail gear shaft 205 is rotatably connected to the head end of the outer traction frame 2. When the outer traction frame 2 rotates outward towards the outside of the lower backing plate 1 around the tail worm wheel shaft 201, the inner connecting rope 202 pulls the first tooth scroll 206 to rotate. The first traction plate 204 rotates towards the outer traction frame 2. After the outer traction frame 2 resets and stops traction on the tissue, the distance between the inner connecting rope 202 and the lower backing plate 1 approaches and resets. The reset coil spring 207 supports the rotation of the first tooth scroll 206 to wind the excess inner connecting rope 202 outside. The first traction plate 204 rotates towards the outside of the outer traction frame 2 and no longer clamps the soft tissue, facilitating the disassembly and separation from the tissue.

[0036] Among them, the front protective ring 402 is of a circular structure. The front protective ring 402 is centered and aligned with the drill bit 405. The tail end of the upper support elastic member 404 is fixed to the drilling module 4. The tail end of the side screw 401 is rotatably connected to the outer bracket 3. The drill bit 405 passes through the middle of the front protective ring 402 to drill the tibia. The front protective ring 402 surrounds the drill bit 405. The bone chips generated by the drill bit 405 are inside the front protective ring 402, avoiding the dispersion of bone chips around, making it more convenient for the subsequent collection and treatment of bone chips and reducing the burden of cleaning bone chips.

[0037] Among them, a first slider 301 is connected to the bottom damping rotating shaft of the outer bracket 3. A first inner gear groove tube 303 is slidably sleeved on the lower part of the first slider 301. The tail end of the first inner gear groove tube 303 is fixedly connected to a second slider 304. The first inner gear groove tube 303 and the second slider 304 form an L-shaped structure. A second inner gear groove tube 305 is slidably sleeved on the inner side of the second slider 304. The tail end of the second inner gear groove tube 305 is connected to a tail slider 306 through a damping rotating shaft. The tail slider 306 is slidably connected to the side slide rail 102. The first slider 301 and the second slider 304 are of rectangular tubular structures. The first inner gear groove tube 303 and the second inner gear groove tube 305 are of rectangular bar structures. Rectangular grooves are arranged at intervals in an array on the sides of the first inner gear groove tube 303 and the second inner gear groove tube 305. The direction is adjusted by rotating around the damping rotating shaft of the second inner gear groove tube 305 and the tail slider 306, and the angle is adjusted by rotating around the rotating shaft of the outer bracket 3 and the first slider 301. It rotates around the tibia for angle adjustment to adapt to the drilling requirements at different positions of the tibia. In another embodiment, refer to Figure 5 As shown, a scale is provided on the side of the outer bracket 3, and a pointer is provided on the outside of the drilling module 4. By moving the pointer of the drilling module 4 in cooperation with the scale of the outer bracket 3, the drilling depth of the drilling module 4 can be checked, which is more convenient to use.

[0038] Among them, damping sliders 302 are slidably arranged at the tail ends of the first slider 301 and the second slider 304. Tail support elastic members 307 are fixedly connected to both the first slider 301 and the second slider 304. The tail end of the damping slider 302 is fixedly connected to the head end of the tail support elastic member 307. The head end of the damping slider 302 is of a trapezoidal structure with inclined surfaces on both sides. The inclined surfaces at the head end of the damping slider 302 are slidably engaged with the grooves of the first inner gear groove tube 303 and the second inner gear groove tube 305. The damping slider 302 fixes the moving distance of the first inner gear groove tube 303 and the second inner gear groove tube 305. The first slider 301 and the first inner gear groove tube 303 slide to extend or shorten the distance, and the second inner gear groove tube 305 and the second slider 304 slide to extend or shorten the distance to adapt to the difference in the thickness of the legs and different leg shapes of fat and thin people.

[0039] Specific usage method and function of this embodiment: In the present invention, the patient's leg is placed on the top of the lower backing plate 1, and the motor inside the drilling module 4 drives the drill bit 405 to rotate for drilling. When performing a drilling operation on the tibia, after the external tissue at the tibia fracture site is incised, by rotating the worm shaft 101, the spiral teeth at both ends of the worm shaft 101 drive the tail worm gear shaft 201 to rotate. The tail worm gear shaft 201 and the outer traction frame 2 rotate synchronously outside the line. The first traction plate 204 and the outer traction frame 2 oppositely arranged on the top of the lower backing plate 1 traction-expand the surrounding skin and soft tissues of the tibia fracture site to both sides, facilitating the exposure of the internal tibia. There is no need for manual traction operation by additional personnel, reducing the configuration of personnel for traction of the skin and soft tissues to the surrounding areas, reducing the number of surgical assistants. When there are many fracture surgeries, personnel can be allocated for more surgeries, which is beneficial for the rotation and rest of medical staff, reducing the difficulty of shift scheduling and extending the rest time;

[0040] While the outer traction frame 2 rotates and traction to the outside, the distance between the inner connecting rope 202 and the lower backing plate 1 increases. The inner connecting rope 202 pulls the first tooth scroll 206 to rotate. The first tooth scroll 206 meshes and drives the tail gear shaft 205 and the first traction plate 204 to rotate. The first traction plate 204 rotates around the tail gear shaft 205 towards the side of the outer traction frame 2 to hook and clamp the soft tissues, avoiding the situation where the soft tissues are detached and re-tracted while the outer traction frame 2 rotates and traction to the outside, and avoiding the reset interference of the tissue detachment during the surgical drilling and traction. After the outer traction frame 2 is reset and no longer traction the tissue, the distance between the inner connecting rope 202 and the lower backing plate 1 approaches and resets. The reset spring 207 supports the rotation of the first tooth scroll 206 to wind the excess inner connecting rope 202 outside. The first traction plate 204 rotates towards the outside of the outer traction frame 2 and no longer clamps the soft tissues, facilitating the separation from the tissues; The clamping operation of the first traction plate 204 and the outer traction frame 2 on the soft tissues can clamp the blood vessels of the tissues, reducing the bleeding volume at the traction site, avoiding the situation where the gap between the contact parts of the first traction plate 204 and the outer traction frame 2 and the traction tissue is small and inconvenient for blood absorption and wiping, and reducing the workload of personnel for cleaning the bleeding;

[0041] Adjust the direction by rotating around the damping rotating shaft of the second inner tooth groove tube 305 and the tail carriage 306, adjust the angle by rotating around the rotating shaft of the outer bracket 3 and the first sliding member 301, and perform angular adjustment rotation around the tibia to adapt to the drilling requirements at different positions of the tibia. The first sliding member 301 and the first inner tooth groove tube 303 slide to extend or shorten the distance, and the second inner tooth groove tube 305 and the second sliding member 304 slide to extend or shorten the distance to adapt to different leg shapes of fat and thin. The front protection ring 402 can first contact the tibia to determine the drilling position, determine the drilling position, the upper sliding rod 403 compresses the upper support spring member 404, and by rotating the side screw rod 401, the drilling module 4 moves axially along the outer thread of the side screw rod 401 along the outer bracket 3. The rotation of the side screw rod 401 makes the movement range of the drilling module 4 and the drill bit 405 more convenient and controllable, and more delicate fine-tuning can be performed compared with hand-held drilling. The drill bit 405 passes through the middle of the front protection ring 402 to drill the tibia. The front protection ring 402 surrounds the drill bit 405, and the bone chips generated by the drill bit 405 are inside the front protection ring 402, avoiding the spread of bone chips around, which is more convenient for the subsequent collection and treatment of bone chips and reduces the burden of cleaning bone chips.

[0042] The above description is only an exemplary embodiment of the present invention and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A drilling assembly for tibial fractures, characterized in that, Comprising: A lower backing plate (1), with outer pulling frames (2) provided on both sides of the lower backing plate (1), an outer support (3) provided outside the lower backing plate (1), a drilling module (4) slidably arranged at the top of the outer support (3). A tail worm wheel shaft (201) is fixedly arranged at the tail end of the outer pulling frame (2). Inner rotating wheels (203) are rotatably arranged at the head end, middle, and tail end of the outer pulling frame (2). The inner rotating wheels (203) are rotationally connected to inner connecting ropes (202). The inner connecting ropes (202) are coiled and wound around the outside of the first tooth scroll (206). A return coil spring (207) is fixedly arranged at the tail end of the first tooth scroll (206). The gear at the tail end of the first tooth scroll (206) is meshed and connected to the tail gear shaft (205). The tail gear shaft (205) is fixedly connected to the first pulling plate (204). The inner connecting ropes (202) are bent and turned along the inner rotating wheels (203). The tail end of the inner connecting ropes (202) is fixedly connected to the lower backing plate (1). The tail end of the inner connecting ropes (202) is above the tail worm wheel shaft (201). The tail end of the return coil spring (207) is fixedly connected to the outer pulling frame (2). The first tooth scroll (206) is rotationally connected to the outer pulling frame (2). The tail end of the tail gear shaft (205) is rotationally connected to the head end of the outer pulling frame (2). When the outer pulling frame (2) rotates outward around the tail worm wheel shaft (201), the inner connecting ropes (202) pull the first tooth scroll (206) to rotate, and the first pulling plate (204) rotates towards one side of the outer pulling frame (2).

2. The drilling assembly for tibial fractures according to claim 1, characterized in that: A worm shaft (101) is rotatably arranged at the lower part of the lower backing plate (1), and the head and tail ends of the worm shaft (101) penetrate to both sides of the lower backing plate (1). A side slide rail (102) is fixedly arranged outside the upper part of the lower backing plate (1).

3. The drilling assembly for tibial fractures according to claim 2, characterized in that: The tail worm wheel shaft (201) is rotationally connected to the outside of the lower backing plate (1). The worm wheel at the tail end of the tail worm wheel shaft (201) is meshed with the helical teeth of the worm shaft (101). The helical teeth at both the head and tail ends of the worm shaft (101) are meshed with the tail worm wheel shaft (201).

4. The drilling assembly for tibial fractures according to claim 1, wherein: The bottom of the outer support (3) is connected by a damping rotating shaft to a first sliding member (301). A first inner tooth groove tube (303) is slidably sleeved on the lower part of the first sliding member (301). The tail end of the first inner tooth groove tube (303) is fixedly connected to a second sliding member (304). A second inner tooth groove tube (305) is slidably sleeved inside the second sliding member (304). The tail end of the second inner tooth groove tube (305) is connected by a damping rotating shaft to a tail sliding frame (306). The tail sliding frame (306) is slidably connected to the side slide rail (102).

5. The drilling assembly for tibial fractures according to claim 4, characterized in that: Damping sliders (302) are slidably arranged at the tail ends of the first sliding member (301) and the second sliding member (304). Tail support elastic members (307) are fixedly connected to both the first sliding member (301) and the second sliding member (304). The tail end of the damping slider (302) is fixedly connected to the head end of the tail support elastic member (307). The head end of the damping slider (302) is slidably engaged with the grooves of the first inner tooth groove tube (303) and the second inner tooth groove tube (305).

6. The drilling assembly for tibial fractures according to claim 1, characterized in that: A side of the drilling module (4) is screwed with a side screw rod (401). A top of the drilling module (4) is provided with an upper sliding rod (403) penetrating and slidingly arranged. A head end of the upper sliding rod (403) is fixedly connected to a front protection ring (402). A middle part of the upper sliding rod (403) is fixedly connected to a head end of an upper supporting elastic member (404). A drill bit (405) is arranged at a front part of the drilling module (4).

7. The drilling assembly for tibial fractures according to claim 6, characterized in that: The front protection ring (402) is of an annular structure. The front protection ring (402) and the drill bit (405) are arranged with their centers aligned. A tail end of the upper supporting elastic member (404) is fixed to the drilling module (4). A tail end of the side screw rod (401) is rotatably connected to an outer bracket (3).

Images