Orthopedic external fixator

Abstract

The present application relates to an orthopedic external fixation bracket, which relates to the field of medical devices, including a mounting rod, a first guide slidably connected to the mounting rod for fixing a steel needle, and a second guide arranged on the mounting rod for fixing the steel needle, wherein the first guide comprises a first adjustment block rotatably connected to the mounting rod, a second adjustment block is slidably connected to the side of the first adjustment block away from the mounting rod, the sliding track of the second adjustment block is arc-shaped and its arc axis is perpendicular to the axis of the mounting rod, a third adjustment block is rotatably connected to the side of the second adjustment block away from the mounting rod, the rotation axis of the third adjustment block is vertically arranged and is perpendicular to the arc axis of the sliding second adjustment block and the axis of the mounting rod at the same time, a needle hole for the steel needle to pass through is provided on the third adjustment block and the second guide, and a locking bolt is also provided on the first guide. The present application has the effect of improving the convenience of adjusting the angle of the steel needle and improving the efficiency of the operation.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an orthopedic external fixation bracket. Background Art

[0002] External fixator is a device for fixing bones. It requires several steel needles to be inserted into the patient's bones, and then a special bracket is installed for fixation. It is widely used in the field of orthopedics, especially for patients with open fractures and poor local soft tissue conditions, which can better reflect its advantages.

[0003] When a bone is fractured, the positions of two adjacent broken bones will be dislocated in various directions. After the steel needle is inserted into the broken bone, the angle of the steel needle needs to be adjusted to make the position of the fracture correspond. Then, the adjusted steel needle is fixed by a straight rod-shaped external fixator to achieve the effect of fracture reduction. With respect to the above-mentioned related technologies, the inventor believes that it is very inconvenient to adjust the angle of the steel needle, and the surgical efficiency is very low. Summary of the invention

[0004] In order to improve the convenience of adjusting the angle of the steel needle and improve the efficiency of the operation, the present application provides an orthopedic external fixation bracket.

[0005] The orthopedic external fixation bracket provided in this application adopts the following technical solution:

[0006] 4. The repairing kit for automotive dents, according to claim 1, wherein the second end of the foot is connected to the foot stand, and the second end is connected to the foot stand by a threaded cantilever scaffold, the threaded cantilever scaffold is used to fix the foot of the foot, and the two foot pieces are connected in an orderly manner. The two foot pieces are connected in an orderly manner to the foot stand, and the two foot pieces are connected in an orderly manner to the foot stand.

[0007] By adopting the above technical solution, when in use, the steel needles at the two places of the fracture are directly inserted into the needle hole and the needle hole respectively. By sliding the first guide in the installation position, the distance between the first guide and the second guide can be changed, thereby driving the bones at both ends of the fracture to approach each other, and then the first adjustment block, the second adjustment block and the third adjustment block are rotated according to the angle to be adjusted, so that the steel needle installed in the needle hole of the third adjustment block can be adjusted in three directions. The adjustment is very convenient. After the adjustment is completed, the position of the first adjustment block, the second adjustment block and the third adjustment block can be fixed by the locking bolt, which greatly improves the convenience of adjusting the angle of the steel needle and makes the operation more efficient.

[0008] Optionally, a first tooth is fixedly connected to a side of the second adjustment block away from the first adjustment block, and a second tooth meshing with the first tooth is fixedly connected to a side of the third adjustment block facing the second adjustment block.

[0009] By adopting the above technical solution, when the third adjusting block rotates relative to the second adjusting block, the second teeth also slide on the first teeth. When the adjustment is completed, the position of the third adjusting block relative to the second adjusting block can be fixed by the locking bolt, and the second teeth also engage with the first teeth, so that the position fixation between the third adjusting block and the second adjusting block is more firmly fixed, avoiding the third adjusting block from rotating relative to the second adjusting block under the action of external force and affecting the fixation of the steel needle.

[0010] Optionally, a plurality of the pinholes are spaced apart along the length direction of the mounting rod.

[0011] By adopting the above technical solution, the fixation requirements of different numbers of steel needles can be met.

[0012] Optionally, the second guide includes a fourth adjusting block rotatably connected to the mounting rod, the fourth adjusting block is slidably connected to a fifth adjusting block on a side away from the mounting rod, the sliding trajectory of the fifth adjusting block is arc-shaped, and the arc axis is perpendicular to the axis of the mounting rod, the fifth adjusting block is rotatably connected to a sixth adjusting block on a side away from the fourth adjusting block, and the pinhole is opened on the sixth adjusting block.

[0013] By adopting the above technical solution, when adjusting the first guide, the second guide can also be adjusted synchronously, so the adjustment is more convenient and flexible.

[0014] Optionally, the mounting rod includes a fixed rod, a first sleeve slidably mounted on the fixed rod, and a second sleeve slidably mounted on the fixed rod, the first guide is mounted on the first sleeve, the second guide is mounted on the second sleeve, a first connecting component is arranged between the first sleeve and the fixed rod, and a second connecting component is arranged between the second sleeve and the fixed rod.

[0015] By adopting the above technical solution, the distance between the first sleeve and the second sleeve can be changed by sliding the position of the first sleeve on the fixed rod and sliding the position of the second sleeve on the fixed rod, so that after the steel needles on the bones at both ends of the fracture are fixed by the first guide and the second guide, the distance between the bones at both ends of the fracture can also be adjusted, and the operation is more flexible.

[0016] Optionally, the first connecting assembly includes an auxiliary rod fixedly connected to one end of the fixed rod, a spring sleeved on the auxiliary rod, and a first fixing ring sleeved on the auxiliary rod, the first fixing ring is located at the end of the spring away from the fixed rod and fixed to the end of the first sleeve away from the second sleeve, a fixing nut is threadedly connected to the auxiliary rod, the fixing nut is located on a side of the first fixing ring away from the spring, and a limit member is provided between the fixed rod and the first sleeve to limit the rotation of the first sleeve on the fixed rod.

[0017] By adopting the above technical solution, the connection between the first sleeve and the fixed rod can be achieved through the first fixing ring, and the first fixing ring can be clamped between the two through the fixing nut and the spring. The setting of the fixing nut can limit the first fixing ring to prevent the first fixing ring from sliding away from the fixed rod. Under the action of the spring force, the first fixing ring can always abut against the fixing nut. When people move to move the fractured bones, the first sleeve will squeeze the spring to move in the direction of the second sleeve, thereby exerting pressure on the bones.

[0018] Optionally, the limiting member includes a first limiting bolt threadedly connected to the side wall of the first sleeve, and a limiting groove for the first limiting bolt to be embedded is formed on the side wall of the fixing rod along its length direction.

[0019] By adopting the above technical solution, by screwing the first limiting bolt on the first sleeve and embedding the first limiting bolt into the limiting groove, the circumferential position of the first sleeve and the fixing rod can be fixed to prevent the first sleeve from rotating on the fixing rod under the action of external force.

[0020] Optionally, a first fixing bolt is threadedly connected to the first sleeve, and a slot for the first fixing bolt to be embedded is formed on the side wall of the fixing rod along its length direction, and the first fixing bolt abuts against the bottom of the slot.

[0021] By adopting the above technical solution, the relative position between the first sleeve and the fixing rod can be fixed by the first fixing bolt abutting against the bottom of the slot, thereby preventing the first sleeve from sliding on the fixing rod under the action of external force.

[0022] Optionally, a slide plate is placed in the slot, and the first fixing bolt abuts against a side of the slide plate away from the bottom of the slot.

[0023] By adopting the above technical solution, after the position between the first sleeve and the fixing rod is fixed by the first fixing bolt, when people move, the first sleeve will drive the slide plate to slide in the slot through the first fixing bolt.

[0024] Optionally, the second connecting assembly includes a connecting bolt threadedly connected to one end of the fixing rod close to the second sleeve, a second fixing ring sleeved on the connecting bolt, and a limiting nut threadedly connected to the connecting bolt, the second fixing ring being fixedly connected to one end of the second sleeve away from the first sleeve and located between the limiting nut and the bolt head of the connecting bolt.

[0025] By adopting the above technical solution, the second fixing ring can be fixed between the limiting nut and the bolt head of the connecting bolt by the limiting nut, so as to realize the connection between the second sleeve and the connecting bolt. By screwing the connecting bolt on the end of the fixing rod, the connection between the second sleeve and the fixing rod can be realized.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The arrangement of the first adjustment block, the second adjustment block and the third adjustment block enables the steel needle installed on the third adjustment block to be rotated and adjusted in the three directions of X, Y and Z after the steel needle is installed on the third installation block, which makes the adjustment more convenient, greatly improves the convenience of adjusting the angle of the steel needle and improves the efficiency of the operation;

[0028] 2. The fourth adjustment block, the fifth adjustment block and the sixth adjustment block are arranged so that the bones at both ends of the fracture can be adjusted through the first guide and the second guide, and the adjustment is more flexible;

[0029] 3. The arrangement of the first sleeve and the second sleeve can adjust the positions of the first sleeve and the second sleeve on the fixing rod as required, thereby adjusting the length of the mounting rod to meet the fixing requirements at different positions;

[0030] 4. The setting of the spring makes it possible for the first sleeve to slide toward the second sleeve when people move, and squeeze the spring, so that the bones can be pressurized and stimulated to accelerate the healing speed. After the pressurization is completed, the first sleeve will slide toward the second sleeve under the action of the spring elastic force to recover. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of this application.

[0032] Figure 2It is a cross-sectional schematic diagram made to illustrate the first guide structure.

[0033] Figure 3 This is a cross-sectional diagram made to reflect the installation rod structure.

[0034] Figure 4 yes Figure 3 A magnified schematic diagram of center A.

[0035] Description of the accompanying drawings: 1. mounting rod; 11. fixing rod; 111. limiting groove; 112. clamping groove; 12. first sleeve; 13. second sleeve; 14. first connecting assembly; 141. auxiliary rod; 142. spring; 143. first fixing ring; 144. fixing nut; 15. second connecting assembly; 151. connecting bolt; 152. second fixing ring; 153. limiting nut; 154. second limiting bolt; 155. second fixing bolt; 16. limiting member; 161. first limiting bolt; 162. first fixing bolt; 163. slide plate; 2. first guide; 21. first adjusting block; 211. notch; 2 12. Mounting portion; 213. Slider; 22. Second adjusting block; 221. Slide; 222. Second locking nut; 223. Embedding groove; 224. Mounting column; 225. First tooth; 23. Third adjusting block; 231. First block; 232. Second block; 233. Pinhole; 2331. First groove; 2332. Second groove; 234. Accommodating groove; 235. Second tooth; 24. Locking bolt; 241. First locking bolt; 242. Second locking bolt; 243. Third locking bolt; 3. Second guide; 31. Fourth adjusting block; 32. Fifth adjusting block; 33. Sixth adjusting block; 4. Steel needle. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The present application embodiment discloses an orthopedic external fixation bracket. Figure 1 The orthopedic external fixator comprises a mounting rod 1, a first guide 2 slidably connected to the mounting rod 1 for fixing a steel pin 4, and a second guide 3 slidably connected to the mounting rod 1 for fixing the steel pin 4. By respectively mounting the steel pins 4 on the bones at both ends of the fracture on the first guide 2 and the second guide 3, and then adjusting the position of the first guide 2 on the mounting rod 1 and the position of the second guide 3 on the mounting rod 1, the first guide 2 and the second guide 3 can drive the bones at both ends of the fracture to move through the steel pins 4 connected thereto, thereby achieving the reduction of the fractured bones.

[0038] The first guide 2 includes a first adjustment block 21, a second adjustment block 22 slidably connected to the first adjustment block 21, and a third adjustment block 23 rotatably connected to the second adjustment block 22; the second guide 3 includes a fourth adjustment block 31, a fifth adjustment block 32 slidably connected to the fourth adjustment block 31, and a sixth adjustment block 33 rotatably connected to the fifth adjustment block 32. In the present application, the structure of the second guide 3 is consistent with that of the first guide 2, and the difference is only in the different installation positions. The present application takes the specific structure of the first guide 2 as an example for description.

[0039] Reference Figure 1 and Figure 2 A locking bolt 24 is also provided on the first guide 2, and the locking bolt 24 includes a first locking bolt 241 for fixing the position of the first adjusting block 21 on the mounting rod 1, a second locking bolt 242 for fixing the position of the second adjusting block 22 on the first adjusting block 21, and a third locking bolt 243 for fixing the position of the third adjusting block 23 on the second adjusting block 22. A needle hole 233 for installing the steel needle 4 is opened on the third adjusting block 23. By adjusting the first adjusting block 21, the second adjusting block 22 and the third adjusting block 23, the steel needle 4 installed on the third adjusting block 23 can be adjusted at three angles, and the adjustment is more convenient.

[0040] Specifically, the first adjustment block 21 is slidably connected to the mounting rod 1, and a notch 211 is provided on one side of the first adjustment block 21. The notch 211 of the first adjustment block 21 is turned outward to form a mounting portion 212. The first locking bolt 241 is simultaneously passed through the two mounting portions 212 on both sides of the notch 211, and the first locking bolt 241 is slidably matched with a mounting portion 212 close to the bolt head of the first locking bolt 241, and is threadedly connected with a mounting portion 212 far from the bolt head of the first locking bolt 241. By screwing the first locking bolt 241, the two mounting portions 212 can be driven to move closer to or away from each other, so that the first adjustment block 21 is slidably matched or fixedly connected to the mounting rod 1. When the two mounting portions 212 move away from each other, the distance between the two mounting portions 212 increases, and the first adjustment block 21 can be directly operated to slide or rotate on the mounting rod 1, so that the angle of the steel needle 4 in the X direction can be adjusted through the second adjustment block 22 and the third adjustment block 23, and the adjustment is very convenient. After the adjustment is completed, the first locking bolt 241 is directly screwed in the opposite direction to make the two mounting parts 212 approach each other, so as to fix the position of the first adjustment block 21 on the mounting rod 1, thereby preventing the first adjustment block 21 from moving under the action of external force and causing unstable fixation.

[0041] The second adjusting block 22 is slidably connected to the side of the first adjusting block 21 away from the mounting portion 212. Specifically, a slider 213 with a T-shaped cross-section is fixedly connected to the side of the first adjusting block 21 away from the notch 211. The slider 213 is in an arc shape as a whole, and its arc opening faces the side away from the mounting rod 1. A slide groove 221 is provided at one end of the second adjusting block 22 facing the first adjusting block 21 for the slider 213 to be embedded and slide. The length direction of the slide groove 221 is consistent with the axial direction of the mounting rod 1. By sliding the second adjusting block 22, the slider 213 can slide in the slide groove 221, so that the angle of the steel needle 4 in the Y direction can be adjusted by the third adjusting block 23 installed on the second adjusting block 22, and the rotation axis of the second adjusting block 22 after sliding is perpendicular to the axial direction of the mounting rod 1, and its rotation axis coincides with the axis of the arc-shaped slider 213. The second locking bolt 242 is located on the side of the slide groove 221 away from the first adjustment block 21, and at the same time penetrates the two opposite sides of the second adjustment block 22. The axial direction of the second locking bolt 242 is perpendicular to the axial direction of the mounting rod 1. The second locking nut 222 is threadedly connected to the second locking bolt 242. At the same time, an embedding groove 223 connected to the slide groove 221 for the second locking nut 222 to be embedded is provided on the side of the second adjustment block 22 facing the second locking nut 222. Under normal circumstances, the second locking bolt 242 is penetrated on the second adjustment block 22, and does not affect the sliding of the slider 213 in the slide groove 221. When the sliding slider 213 adjusts the angle of the second adjustment block 22, the second locking nut 222 is screwed, and the second locking nut 222 abuts against the slider 213, so that the relative position between the second adjustment block 22 and the slider 213 is fixed by the second locking bolt 242 and the second locking nut 222.

[0042] The third adjusting block 23 is rotatably connected to the side of the second adjusting block 22 away from the first adjusting block 21. Specifically, a cylindrical mounting post 224 is fixedly connected to the side of the second adjusting block 22 facing the third adjusting block 23. A receiving groove 234 for the mounting post 224 to be embedded is provided at one end of the third adjusting block 23 facing the second adjusting block 22. By operating the third adjusting block 23 to rotate around the mounting post 224, the rotation angle of the third adjusting block 23 can be adjusted, thereby adjusting the angle of the steel needle 4 installed on the third adjusting block 23 in the Z direction, wherein the axis of the mounting post 224 is perpendicular to the rotation axis of the second adjusting block 22 and the rotation axis of the first adjusting block 21. The third locking bolt 243 is located at one end of the third adjusting block 23 away from the second adjusting block 22, and passes through the third adjusting block 23 to communicate with the receiving groove 234, and is threadedly connected to the mounting post 224. By screwing the third locking bolt 243, the third adjusting block 23 can be locked to prevent the third adjusting block 23 from rotating relative to the second adjusting block 22 under the action of external force.

[0043] Among them, the third adjusting block 23 includes a first block 231 located on the side of the second adjusting block 22 away from the first adjusting block 21 and a second block 232 located on the side of the first block 231 away from the second adjusting block 22. The first block 231 and the second block 232 are both mounted on the mounting column 224 and fixed by a third locking bolt 243. A plurality of semicircular first grooves 2331 are spaced apart along its length direction on the side of the first block 231 facing the second block 232, and a plurality of semicircular second grooves 2332 are spaced apart along its length direction on the side of the second block 232 facing the first block 231. When the first block 231 and the second block 232 are connected together through the mounting column 224 and the third locking bolt 243, each first groove 2331 and each second groove 2332 together form a complete circular hole, i.e., the above-mentioned needle hole 233 for mounting the steel needle 4. During installation, directly insert the steel needle 4 into the needle hole 233 formed by the first groove 2331 and the second groove 2332, and then screw the third locking bolt 243. The third locking bolt 243 can abut the second block 232 and move in the direction of the first block 231, so that the second block 232 and the first block 231 are clamped between the second adjustment block 22 and the bolt head of the third locking bolt 243, thereby clamping the steel needle 4 placed in the needle hole 233.

[0044] Among them, in order to strengthen the fixation between the second adjustment block 22 and the third adjustment block 23, a first tooth 225 is fixedly connected to the side of the second adjustment block 22 facing the third adjustment block 23, and a second tooth 235 meshing with the first tooth 225 is fixedly connected to the side of the first block 231 facing the second adjustment block 22. When the position of the third adjustment block 23 is fixed by the third locking bolt 243, the first tooth 225 and the second tooth 235 are meshed, thereby preventing the third adjustment block 23 from rotating relative to the second adjustment block 22 under the action of external force, affecting the fixation of the bone.

[0045] By adjusting the position of the first adjusting block 21 on the mounting rod 1, the position of the second adjusting block 22 relative to the first adjusting block 21, and the position of the third adjusting block 23 relative to the second adjusting block 22, the steel needle 4 installed in the needle hole 233 can be adjusted in three directions until the fractured bone is adjusted to its original position, and the adjustment is more convenient and flexible.

[0046] The bones on both sides of the fracture can be adjusted simultaneously by the first guide 2 and the second guide 3, making the adjustment more convenient and labor-saving.

[0047] Reference Figure 1 and Figure 3The mounting rod 1 comprises a fixed rod 11, a first sleeve 12 slidably mounted on the fixed rod 11, and a second sleeve 13 slidably mounted on the fixed rod 11. The first sleeve 12 and the second sleeve 13 are respectively located at both ends of the fixed rod 11. A first connecting assembly 14 is arranged between the first sleeve 12 and the fixed rod 11, and a second connecting assembly 15 is arranged between the second sleeve 13 and the fixed rod 11. The first connecting assembly 14 and the second connecting assembly 15 can realize the connection and cooperation between the first sleeve 12 and the fixed rod 11 and between the second sleeve 13 and the fixed rod 11, so as to adjust the overall length of the mounting rod 1. The first guide 2 is slidably connected to the first sleeve 12, and the second guide 3 is slidably connected to the second sleeve 13.

[0048] Reference Figure 3 and Figure 4 The first connecting assembly 14 includes an auxiliary rod 141 fixed to one end of the fixed rod 11, a spring 142 sleeved on the auxiliary rod 141, and a first fixing ring 143 fixed to one end of the first sleeve 12 away from the second sleeve 13. The first fixing ring 143 is sleeved on the auxiliary rod 141 and is located at the end of the spring 142 away from the fixed rod 11. A fixing nut 144 is threadedly connected to the auxiliary rod 141. The fixing nut 144 is located on the side of the first fixing ring 143 away from the spring 142. A stopper 16 is also provided between the fixed rod 11 and the first sleeve 12 to limit the rotation of the first sleeve 12 on the fixed rod 11. The first fixing ring 143 can fix the first sleeve 12 between the fixing nut 144 and the spring 142, and the first fixing ring 143 can be pushed to always abut against the fixing nut 144 under the elastic force of the spring 142, thereby fixing the position of the first sleeve 12 on the fixed rod 11. The setting of the spring 142 allows the first fixing ring 143 to squeeze the spring 142 when people are exercising, thereby driving the first sleeve 12 to slide on the fixing rod 11, so that the bones at two fractured parts can be relatively close to each other, which plays a role of pressurization and makes the fracture recover faster.

[0049] Among them, the limiting member 16 includes a first limiting bolt 161 threadedly connected to the side wall of the first sleeve 12, and a limiting groove 111 is opened on the side wall of the fixing rod 11 along its length direction for the first limiting bolt 161 to be embedded. By screwing the first limiting bolt 161 into the limiting groove 111, the circumferential position of the first sleeve 12 can be fixed to prevent the first sleeve 12 from circumferentially rotating under the action of external force, thereby affecting the fixation of the bone.

[0050] A first fixing bolt 162 is also threadedly connected to the side wall of the first sleeve 12, and a slot 112 is provided on the side wall of the fixing rod 11 along its length direction for the first fixing bolt 162 to be inserted. When the first fixing bolt 162 is screwed, the first fixing bolt 162 can abut against the bottom of the slot 112, thereby fixing the relative position of the first sleeve 12 and the fixing rod 11. In order to prevent the first fixing ring 143 from being unable to compress the spring 142 and drive the first sleeve 12 to slide under the action of external force when the position between the first sleeve 12 and the fixing rod 11 is fixed by the first fixing bolt 162, a slide plate 163 is placed in the slot 112. When the first fixing bolt 162 is screwed, the first fixing bolt 162 will abut against the side of the slide plate 163 away from the bottom of the slot 112. When people exercise, when the force of the exercise is large, the first fixing ring 143 will squeeze the spring 142 and drive the first sleeve 12 to slide on the fixing rod 11. At this time, the slide plate 163 also slides in the slot 112, and by adjusting the force of the first fixing bolt 162 abutting against the slide plate 163, the size of the force that drives the first sleeve 12 to slide can be changed. While fixing the position of the first sleeve 12, when the force of people's exercise is greater than the set value, the two bones at the fracture site can be driven to exert relative pressure, thereby promoting bone recovery.

[0051] Reference Figure 3 The second connection assembly 15 includes a connection bolt 151 threadedly connected to the end of the fixing rod 11 away from the auxiliary rod 141 and a second fixing ring 152 fixedly connected to the end of the second sleeve 13 away from the first sleeve 12. The second fixing ring 152 is slidably sleeved on the connection bolt 151, and a limit nut 153 is also threadedly connected to the connection bolt 151. The limit nut 153 is located on the side of the second fixing ring 152 away from the bolt head of the connection bolt 151, and can slide in the inner hole of the second sleeve 13, so as to fix the second fixing ring 152 between the limit nut 153 and the bolt head of the connection bolt 151. The second sleeve 13 and the fixing rod 11 can be fixed by the connection bolt 151, and by adjusting the position of the connection bolt 151 screwed into the fixing rod 11, the position of the second sleeve 13 relative to the fixing rod 11 can be changed, and the length of the mounting rod 1 can be changed. At the same time, a second limiting bolt 154 is threadedly connected to the side wall of the second sleeve 13, and the second limiting bolt 154 is also located in the limiting groove 111 to fix the circumferential position of the second sleeve 13 to prevent the second sleeve 13 from rotating relative to the bone under the action of external force and affecting the fixation of the bone.

[0052] A second fixing bolt 155 is also threadedly connected to the outer wall of the second sleeve 13, and the second fixing bolt 155 also abuts against the slide plate 163 in the slot 112, thereby fixing the position of the slide plate 163 and preventing the slide plate 163 from being fixed only by the first fixing bolt 162, causing the end of the slide plate 163 to be lifted up, thereby affecting the sliding of the slide plate 163 in the slot 112.

[0053] The implementation principle of an orthopedic external fixator in the embodiment of the present application is as follows: when in use, first adjust the position of the first sleeve 12 and the second sleeve 13 on the fixing rod 11 as needed. And fix the position of the first sleeve 12 and the second sleeve 13 by the first fixing bolt 162 and the second fixing bolt 155. Then, the steel needles 4 on the bones at both ends of the fracture are respectively inserted into the pinholes 233 of the first guide 2 and the second guide 3, and the first guide 2 and the second guide 3 are adjusted to adjust the steel needles 4 in three directions, so that the bones on both sides of the fracture are reset. It is very convenient to adjust the angle of the steel needle 4, which greatly improves the efficiency of the operation. When people are in daily activities, the first fixing ring 143 will drive the first sleeve 12 to move toward the second sleeve 13. At this time, the first fixing ring 143 will squeeze the spring 142 and drive the slide plate 163 to slide in the slot 112. The first sleeve 12 will drive the bone fixed on the first sleeve 12 to approach the bone fixed on the second sleeve 13, so that the two bones touch each other and apply pressure to promote the recovery of the bones.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An orthopedic external fixator, characterized in that: The invention comprises a mounting rod (1), a first guide (2) slidably connected to the mounting rod (1) for fixing a steel needle (4), and a second guide (3) arranged on the mounting rod (1) for fixing the steel needle (4), wherein the first guide (2) comprises a first adjusting block (21) rotatably connected to the mounting rod (1), a second adjusting block (22) slidably connected to a side of the first adjusting block (21) away from the mounting rod (1), a sliding track of the second adjusting block (22) is arc-shaped and its arc axis is perpendicular to the axis of the mounting rod (1), and a second adjusting block (22) rotatably connected to a side of the second adjusting block (22) away from the mounting rod (1) The third adjusting block (23) has a rotation axis arranged vertically and is perpendicular to the arc axis of the sliding second adjusting block (22) and the axis of the mounting rod (1). The third adjusting block (23) and the second guide (3) are both provided with a needle hole (233) for the steel needle (4) to pass through. The first guide (2) is also provided with a locking bolt (24) for fixing the position of the first adjusting block (21) on the mounting rod (1), the position of the second adjusting block (22) on the first adjusting block (21), and the position of the third adjusting block (23) on the second adjusting block (22). The mounting rod (1) comprises a fixing rod (11), a sliding rod (22), and a fixing rod (23) for fixing the first adjusting block (21) on the mounting rod (1), and a fixing rod (23) for fixing the second adjusting block (22) on the first adjusting block (21). A first sleeve (12) movably sleeved on the fixed rod (11) and a second sleeve (13) slidably sleeved on the fixed rod (11); the first guide (2) is sleeved on the first sleeve (12); the second guide (3) is sleeved on the second sleeve (13); a first connecting component (14) is provided between the first sleeve (12) and the fixed rod (11); a second connecting component (15) is provided between the second sleeve (13) and the fixed rod (11); the first connecting component (14) comprises an auxiliary rod (141) fixedly connected to one end of the fixed rod (11), a spring sleeved on the auxiliary rod (141); (142) and a first fixing ring (143) sleeved on the auxiliary rod (141), the first fixing ring (143) being located at one end of the spring (142) away from the fixing rod (11) and being fixedly connected to one end of the first sleeve (12) away from the second sleeve (13), a fixing nut (144) being threadedly connected to the auxiliary rod (141), the fixing nut (144) being located at one side of the first fixing ring (143) away from the spring (142), and a limiting member (16) for limiting the rotation of the first sleeve (12) on the fixing rod (11) being provided between the fixing rod (11) and the first sleeve (12);The second connecting assembly (15) comprises a connecting bolt (151) threadedly connected to one end of the fixing rod (11) close to the second sleeve (13), a second fixing ring (152) sleeved on the connecting bolt (151), and a limiting nut (153) threadedly connected to the connecting bolt (151), wherein the second fixing ring (152) is fixedly connected to one end of the second sleeve (13) away from the first sleeve (12) and is located between the limiting nut (153) and the bolt head of the connecting bolt (151).

2. The orthopedic external fixator according to claim 1, characterized in that: A first tooth (225) is fixedly connected to a side of the second adjustment block (22) away from the first adjustment block (21), and a second tooth (235) meshing with the first tooth (225) is fixedly connected to a side of the third adjustment block (23) facing the second adjustment block (22).

3. The orthopedic external fixator according to claim 1, characterized in that: A plurality of the pinholes (233) are arranged at intervals along the length direction of the mounting rod (1).

4. The orthopedic external fixator according to claim 1, characterized in that: The second guide (3) comprises a fourth adjustment block (31) rotatably connected to the mounting rod (1); a fifth adjustment block (32) is slidably connected to a side of the fourth adjustment block (31) away from the mounting rod (1); a sliding track of the fifth adjustment block (32) is arc-shaped, and an axis of the arc is perpendicular to the axis of the mounting rod (1); a sixth adjustment block (33) is rotatably connected to a side of the fifth adjustment block (32) away from the fourth adjustment block (31); and the pinhole (233) is provided on the sixth adjustment block (33).

5. The orthopedic external fixator according to claim 1, characterized in that: The limiting member (16) comprises a first limiting bolt (161) threadedly connected to the side wall of the first sleeve (12), and a limiting groove (111) for the first limiting bolt (161) to be embedded is provided on the side wall of the fixing rod (11) along its length direction.

6. The orthopedic external fixator according to claim 1, characterized in that: The first sleeve (12) is also threadedly connected with a first fixing bolt (162), and a slot (112) for the first fixing bolt (162) to be inserted is provided on the side wall of the fixing rod (11) along its length direction, and the first fixing bolt (162) abuts against the bottom of the slot (112).

7. The orthopedic external fixator according to claim 6, characterized in that: A slide plate (163) is placed in the slot (112), and the first fixing bolt (162) abuts against a side of the slide plate (163) away from the bottom of the slot (112).

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