Bone broken end healing bridge

Abstract

The invention relates to the technical field of orthopedic medical apparatuses and instruments, and discloses a bone broken end healing bridge which comprises an adjustable track; the two connecting seats are mounted at the two ends of the adjustable track respectively, mounting holes are formed in the connecting seats, each mounting hole comprises two arc parts and two plane parts, the two plane parts are parallel to each other, and the two ends of each arc part are connected with one ends of the two plane parts respectively; the fixing assembly is mounted on the adjustable track and used for driving the two connecting seats to be close to or away from each other; the bone needle penetrates through the mounting hole, two matching surfaces are arranged on the outer wall of the bone needle, and the matching surfaces are attached to the plane part; the number of the nuts corresponding to one bone needle is two, and the connecting base is fixedly installed between the two nuts. The anti-rotation capability of the bone needle can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of orthopedic medical instruments, in particular to a bone fracture end healing bridge. BACKGROUND

[0002] At present, the fixing technology of bone fracture mainly includes internal fixation and external fixation. The external fixation technology usually adopts threaded bone pins, which are fixed on both sides of the bone fracture end by penetrating the skin and soft tissue, and the two bone pins are fixed to realize the stability of the bone fracture end. The internal fixation technology is fixed by winding iron wire or using steel plate screw around the bone fracture end.

[0003] The specific structure of the external fixation method is described in the application No. CN202510096076.7, the bone pins are fixed and installed on both sides of the human sternum, a steel plate is installed between the bone pins, and the steel plate is locked by a nut, so as to fix the two fractured sternums and improve the recovery speed and effect of the patient.

[0004] However, when the bone pin is installed on the steel plate, the anti-rotation ability of the bone pin is weak, and displacement or falling off may occur during the healing process. SUMMARY

[0005] In order to improve the stability after the installation of the bone pin, the application provides a bone fracture end healing bridge.

[0006] The application provides a bone fracture end healing bridge, which adopts the following technical scheme: A bone fracture end healing bridge, comprising: an adjustable track; Two connecting seats are respectively installed on both ends of the adjustable track, the connecting seat is provided with a mounting hole, the mounting hole comprises two arc parts and two plane parts, the two plane parts are arranged in parallel with each other, and the two ends of the arc part are respectively connected with one end of the two plane parts; A fixing assembly is installed on the adjustable track, which is used for driving the two connecting seats to approach or move away from each other; A bone pin penetrates through the mounting hole, the outer wall of the bone pin is provided with two matching surfaces, and the matching surfaces are matched with the plane parts; Two nuts are provided for one bone pin, and the connecting seat is fixedly installed between the two nuts.

[0007] By adopting the technical scheme, the connecting seat is installed on the adjustable track through the fixing assembly, the distance between the two connecting seats can be adjusted according to the distance between the two bone pins, the bone pin passes through the mounting hole and the outer wall has two matching surfaces that are attached to the flat part; the nut is used to fix the bone pin on the connecting seat; in use, the bone pin passes through the mounting hole of the connecting seat, and the matching surface is attached to the flat part, which increases the contact area and constraint between the bone pin and the connecting seat, limits the rotation of the bone pin in the mounting hole, and improves the anti-rotation ability of the bone pin. At the same time, during the healing process of the bone fracture end, this stable connection reduces the risk of displacement or falling of the bone pin, and helps the stable healing of the bone fracture end.

[0008] Optionally, the fixing assembly comprises a plug rod and a snap spring, the rod wall of the plug rod is provided with a ring groove, the plug rod is inserted into the adjustable track, the snap spring is embedded on the hollow inner wall of the adjustable track, and the snap spring is clamped in the ring groove; the fixing assembly further comprises a screw rod, the screw rod is fixedly installed on the other connecting seat, a threaded hole is formed in the adjustable track, and the screw rod is threadedly connected with the adjustable track.

[0009] By adopting the above technical scheme, when the positions of the two bone pins are determined, the bone pins are first installed on the connecting seats, and then the positions of the two connecting seats are relatively fixed by the fixing member. During the installation process, the plug rod is inserted into the adjustable track, and the snap spring is clamped into the ring groove, thereby realizing the preliminary fixation of the plug rod and the adjustable track. After the screw rod and the adjustable track are threadedly connected and the two connecting seats are fixedly connected with the bone pins, the adjustable track will not rotate with the plug rod, but can move along the length direction of the plug rod. When the adjustable track and the screw rod are threadedly connected, the plug rod approaches the screw rod along with the rotation of the adjustable track, and vice versa, so as to realize the approach or separation of the two connecting seats.

[0010] Optionally, a pressing rod is slidably installed on the circumferential side of the plug rod, the pressing rod slides along the radial direction of the plug rod, and a driving assembly for driving the pressing rod to abut against the inner wall of the adjustable track is installed on the connecting seat.

[0011] By adopting the above technical scheme, the driving assembly drives the pressing rod to slide along the radial direction of the plug rod, so that the pressing rod abuts against the inner wall of the adjustable track. In this way, the plug rod and the adjustable track are not only preliminarily fixed through the clamping of the snap spring and the ring groove, but also increase the friction force through the abutment of the pressing rod and the inner wall of the adjustable track, thereby further improving the stability and reliability of the connection and reducing the possibility of relative movement between the connecting seat and the adjustable track during use.

[0012] Optionally, the driving assembly comprises a pressing member for pressing the end of the pressing rod, a first channel is formed between the connecting seat and the insertion rod, one end of the pressing rod extends into the first channel, the driving assembly further comprises a driving rod, one end of the driving rod is inserted into the connecting seat, and one end of the driving rod extends out of the connecting seat and contacts the nut, the driving rod presses the pressing member downward with the rotation of the nut, and the pressing member presses the pressing rod to slide outward relative to the insertion rod.

[0013] By adopting the technical scheme, when the nut position is adjusted, the driving rod rotates with the nut and presses the pressing member downward, the pressing member exerts a pressing action on the pressing rod, the pressing rod slides outward relative to the insertion rod and abuts against the inner wall of the adjustable track. This design indirectly controls the sliding of the pressing rod through the rotating action of the nut, and the operation is convenient.

[0014] Optionally, the pressing member comprises a plurality of pressing balls, and the pressing balls are filled in the first channel.

[0015] By adopting the technical scheme, the plurality of pressing balls are used as the pressing member, compared with a single-shaped pressing member, when the driving rod enters, the space of the pressing balls is reduced, the pressing balls are driven to flow and gather, the plurality of pressing balls uniformly transmit the pressure to the pressing rod, the force on each part of the pressing rod is more uniform, and thus the pressing rod can smoothly and uniformly slide outward relative to the insertion rod.

[0016] Optionally, two reinforcing rods are installed on the connecting seat where the insertion rod is installed, a mounting groove is formed on one surface of the connecting seat, the depth of the mounting groove extends along the length direction of the central axis of the mounting hole, the mounting groove does not penetrate through the connecting seat, the mounting groove and an arc part are completely communicated, the reinforcing rod is installed in the mounting groove, when the bone pin is installed in the mounting hole, the outer wall of the reinforcing rod contacts the threaded part of the bone pin, an insertion hole is formed at one end of the reinforcing rod, a pressing rod is inserted into the insertion hole of the reinforcing rod, a through groove is formed in the outer wall of the reinforcing rod, the through groove is communicated with the insertion hole, the outer wall of the reinforcing rod is wrapped with a rubber ring for sealing the through groove, and the insertion hole and the through groove of the reinforcing rod are filled with pressing balls. When the pressing rod is inserted into the reinforcing rod, one end of the pressing rod abuts against the end face of the nut, and the pressing balls press the rubber ring.

[0017] By adopting the technical scheme, when the bone pin is installed in the mounting hole, the reinforcing rod contacts the threaded part of the bone pin, and supports and fixes the bone pin; when the insertion rod is inserted into the reinforcing rod, the insertion rod reduces the overall accommodation space of the pressing balls, and thus drives the pressing balls to press the rubber ring, the rubber ring is deformed, the rubber ring directly contacts the threaded part of the bone pin, the connection tightness between the reinforcing rod and the insertion rod is further enhanced, and the stability and reliability of the entire bone end healing bridge are improved.

[0018] Optionally, the distance between the inner wall of the mounting groove and the bone needle is different between the two reinforcing rods, and the inner wall of the mounting groove closest to the middle between the two reinforcing rods is closest to the bone needle, and the distance between the mounting groove and the bone needle gradually increases from the position closest to the middle between the two reinforcing rods to the reinforcing rods.

[0019] By adopting the above technical scheme, the constraint force of the inner wall of the mounting groove on the reinforcing rods is different at different positions, and when the fixing assembly drives the two connecting seats to approach, the reinforcing rods can be guided to approach the bone needle in a certain direction and force, so that the contact between the reinforcing rods and the bone needle is more close and uniform, the fixing effect on the bone needle is further improved, and the stability of the bone fracture healing bridge is enhanced.

[0020] Optionally, the connecting seat is further provided with two first pressing plates and a second pressing plate in the mounting groove, the first pressing plate and the second pressing plate are both arc-shaped plate structures, the first pressing plate corresponds to the reinforcing rod one by one, one end of the first pressing plate is connected with the reinforcing rod, and the other end of the first pressing plate is close to the second pressing plate, when the fixing assembly drives the two connecting seats to approach, the inner wall of the mounting groove extrudes the two reinforcing rods, and the two reinforcing rods have a tendency to move towards the first pressing plate. By adopting the above technical scheme, when the fixing assembly drives the two connecting seats to approach, the inner wall of the mounting groove extrudes the reinforcing rods, and the reinforcing rods have a tendency to move towards the first pressing plate, so that the contact pressure between the reinforcing rods and the bone needle can be further enhanced, and the fixing effect on the bone needle is improved.

[0021] Optionally, a second channel is formed in the second pressing plate, the second channel is communicated with the first channel, the second channel is filled with an extrusion ball, and a push block is mounted on the first pressing plate and extends into the second channel, when the two reinforcing rods have a tendency to move towards the first pressing plate, the push block has a tendency to push the extrusion ball.

[0022] By adopting the above technical scheme, when the two reinforcing rods move towards the first pressing plate, the push block pushes the extrusion ball in the second channel, and the extrusion ball generates greater pressure after being extruded, so that the extrusion force on the pressing rod is further increased; this design converts the movement of the reinforcing rod into greater extrusion force on the pressing rod through a chain reaction, so that the connection stability between the reinforcing rod and the adjustable track is further enhanced, and the reliability and safety of the entire bone fracture healing bridge under complex stress conditions are improved.

[0023] In summary, the present application has at least one of the following beneficial effects: 1. The contact area and constraint between the bone needle and the connecting seat are increased, the self-rotation of the bone needle is limited, the anti-rotation ability of the bone needle is improved, the risk of displacement or falling of the bone needle during the healing process of the bone fracture end is reduced, and the stable healing of the bone fracture end is facilitated; 2. The insertion rod and the adjustable track in the fixing assembly are preliminarily fixed through the snap spring and the ring groove, the driving assembly drives the abutting rod to abut against the inner wall of the adjustable track to increase the friction force; the reinforcing rod is in contact with the threaded part of the bone needle, and dynamic fine adjustment during the healing process of the bone fracture end is realized, and the dynamic change requirement during the healing process of the bone fracture end is adapted 3. The insertion rod is inserted into the reinforcing rod, the ball is extruded to extrude the rubber ring to enhance the connection tightness; the insertion rod and the adjustable track in the fixing assembly are preliminarily fixed through the snap spring and the ring groove, the driving assembly drives the abutting rod to abut against the inner wall of the adjustable track to increase the friction force; the reinforcing rod is in contact with the threaded part of the bone needle, the insertion rod is inserted into the reinforcing rod, the ball is extruded to extrude the rubber ring to enhance the connection tightness; the special spacing design of the inner wall of the mounting groove and the reinforcing rod guides the reinforcing rod to tightly contact the bone needle; the extrusion ball in the second abutting plate is pushed by the push block to increase the extrusion force on the abutting rod; these designs improve the stability and reliability of the entire bone fracture end healing bridge from multiple aspects. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure schematic diagram of embodiment 1 of the present application; Figure 2 is the overall structure sectional view of the fixing assembly embodied in embodiment 1 of the present application; Figure 3 is the structure sectional view of the insertion rod inserted into the adjustable track embodied in embodiment 2 of the present application; Figure 4 is the overall structure schematic diagram of the connecting seat connecting the insertion rod in embodiment 2 of the present application; Figure 5 is Figure 3 is the enlarged schematic diagram of A in Figure 6 is the sectional view of the reinforcing rod mounted on the connecting seat embodied in embodiment 2 of the present application; Figure 7 is the top view of the connecting seat connecting the insertion rod in embodiment 2 of the present application; Figure 8 is the sectional view of the first channel and the second channel communicated in embodiment 2 of the present application.

[0025] Explanation of reference signs: 100, adjustable track; 110, operation part; 200, connecting seat; 210, mounting hole; 211, circular arc part; 212, flat part; 220, first channel; 230, mounting groove; 300, fixing assembly; 310, insertion rod; 311, ring groove; 320, screw rod; 330, clamping spring; 400, bone needle; 410, nut; 420, matching surface; 500, pressing rod; 600, driving assembly; 610, driving rod; 620, extrusion ball; 700, reinforcing rod; 710, insertion hole; 720, pressing rod; 730, through groove; 740, rubber ring; 800, first pressing plate; 810, connecting block; 820, push block; 900, second pressing plate; 910, second channel. DETAILED DESCRIPTION

[0026] The following will be described in detail below with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 8 The present application will be further described in detail. EMBODIMENT

[0027] The present application discloses a bone fracture end healing bridge. Referring to Figure 1 A bone fracture end healing bridge comprises an adjustable track 100, two connecting seats 200, a fixing assembly 300, a bone needle 400, and nuts 410. The adjustable track 100 serves as the basic support structure of the entire device, the two connecting seats 200 are respectively installed at the two ends of the adjustable track 100, the fixing assembly 300 is used to adjust the distance between the two connecting seats 200, the bone needle 400 passes through the connecting seat 200, and the two nuts 410 fix the bone needle 400 on the connecting seat 200. The bone needle 400 still adopts the needle barrel and needle core structure, the needle core forces the needle barrel part to open outward to tightly abut against the inner wall of the blind hole of the human sternum, so as to realize the connection and fixation between the needle barrel and the human sternum. The bone needle 400 is a prior art, and the present application will not be described in detail, and the specific structure of the prior art is not shown in the figure.

[0028] The part of the connecting seat 200 for fixing the nut 410 is block-shaped, the block-shaped part of the connecting seat 200 is provided with a mounting hole 210, the mounting hole 210 comprises two circular arc parts 211 and two flat parts 212, the two flat parts 212 are arranged in parallel with each other, and the two ends of the circular arc part 211 are respectively connected with one end of the two flat parts 212. The outer wall of the needle barrel of the bone needle 400 is provided with two matching surfaces 420 for thread connection with the two nuts 410, when the bone needle 400 is fixed and installed on the connecting seat 200 through the nut 410, the two matching surfaces 420 of the bone needle 400 are respectively attached to the two flat parts 212, so that the bone needle 400 cannot rotate along itself, thereby improving the anti-rotation ability of the bone needle 400 and reducing the risk of displacement or falling of the bone needle 400 during the healing process.

[0029] Referring to Figure 2The adjustable track 100 is a hollow circular rod structure with both ends open, and the two connecting seats 200 are connected with the two ends of the adjustable track 100 through the fixing assembly 300. The fixing assembly 300 includes a plug rod 310 and a screw rod 320. One end of the plug rod 310 is fixedly connected with one connecting seat 200, and a ring groove 311 is formed in the wall of the plug rod 310. The plug rod 310 is inserted into the adjustable track 100, and the fixing assembly 300 further includes a clamping spring 330 installed on the inner wall of the adjustable track 100. The inner wall of the adjustable track 100 is provided with a displacement slot for embedding and installing the clamping spring 330. The clamping spring 330 is a prior art, and the specific structure of the clamping spring 330 is shown as a whole, and the installation position of the clamping spring 330 is mainly shown in the figure. The clamping spring 330 is clamped in the ring groove 311, thereby achieving the preliminary fixation of the plug rod 310 and the adjustable track 100. The screw rod 320 is fixedly installed on the other connecting seat 200, and the adjustable track 100 is provided with an internally threaded hole wall. The screw rod 320 is threadedly connected with the adjustable track 100. The outer wall of the adjustable track 100 is provided with an operation portion 110, which facilitates the rotation of the adjustable track 100 by a tool such as a wrench.

[0030] When it is necessary to adjust the distance between the two connecting seats 200, the adjustable track 100 is rotated. Since the screw rod 320 is threadedly connected with the adjustable track 100, and the plug rod 310 is preliminarily fixed with the adjustable track 100 by the clamping spring 330, the rotation of the adjustable track 100 will drive the screw rod 320 to move closer, but the plug rod 310 will not rotate with the rotation of the adjustable track 100, thereby realizing the approach or departure of the two connecting seats 200 in the length direction of the adjustable track 100.

[0031] The implementation principle of the bone fracture end healing bridge of the embodiment 1 is as follows: The bone needle 400 passes through the mounting hole 210 of the connecting seat 200, and the outer wall of the bone needle 400 is provided with two matching surfaces 420 which are in abutment with the flat portion 212 of the mounting hole 210. By rotating the nut 410, the bone needle 400 can be fixed on the connecting seat 200, and the abutment of the matching surface 420 and the flat portion 212 improves the anti-rotation ability of the bone needle 400 and reduces the risk of displacement or falling of the bone needle 400 during the healing process. Embodiment

[0032] Reference Figure 3 and Figure 4 The difference between the embodiment 2 and the embodiment 1 is that the embodiment 2 adds a pressing rod 500, a driving assembly 600, a reinforcing rod 700, a first pressing plate 800 and a second pressing plate 900 on the connecting seat 200 connected with the plug rod 310 on the basis of the embodiment 1. The pressing rod 500 and the reinforcing rod 700 are made of stainless steel and have a certain hardness.

[0033] Specifically, referring to Figure 4The one end of the insertion rod 310 inserted into the adjustable track 100 is provided with a plurality of abutting rods 500 slidingly installed on the periphery of the one end, the plurality of abutting rods 500 are uniformly spaced along the circumference of the insertion rod 310, four abutting rods 500 are provided in the application, and the abutting rods 500 slide along the radial direction of the insertion rod 310. The driving assembly 600 is installed on the connecting seat 200 and is used for driving the abutting rods 500 to abut on the inner wall of the adjustable track 100.

[0034] With reference to Figure 5 A first channel 220 is arranged between the connecting seat 200 and the insertion rod 310, the first channel 220 and the insertion rod 310 are coaxially arranged, one end of the abutting rod 500 extends into the first channel 220, and the one end of the abutting rod 500 close to the length direction of the first channel 220. The driving assembly 600 includes a squeezing member and a driving rod 610.

[0035] Specifically, the squeezing member includes a plurality of squeezing balls 620, the squeezing balls 620 can be of different sizes, and the squeezing balls 620 of different sizes are convenient for filling in the first channel 220. The squeezing balls 620 of the embodiment are made of solid steel balls and have a certain rigidity. The squeezing member can also be rice, gravel, small stones and other objects with a certain hardness and fluidity, which move close to the abutting rod 500 after being squeezed and play a squeezing role on the abutting rod 500. One end of the driving rod 610 is inserted into the connecting seat 200, and the driving rod 610 slides up and down on the connecting seat 200, when the one end of the driving rod 610 extends out of the connecting seat 200 and can contact the nut 410, the other end of the driving rod 610 does not extend into the first channel 220, but close to the other end of the length direction of the first channel 220.

[0036] After the two connecting seats 200 are installed on the adjustable track 100, when the connecting seat 200 connected with the insertion rod 310 and the bone needle 400 are connected, one nut 410 is installed first to make the connecting seat 200 abut on the end face of the nut 410, when another nut 410 is installed, the driving rod 610 moves into the first channel 220 along with the nut 410 rotating, enters the first channel 220 and presses the squeezing balls 620 downward, the squeezing balls 620 uniformly transmit the pressure to the plurality of abutting rods 500 after being squeezed, so that the abutting rods 500 slide outwardly to the insertion rod 310 and abut on the inner wall of the adjustable track 100, further enhancing the connection stability of the insertion rod 310 and the adjustable track 100. The one end of the abutting rod 500 inserted into the first channel 220 is of a hemispherical structure, which is convenient for the squeezing balls 620 to contact and receive the squeezing of the squeezing balls 620.

[0037] With reference to Figure 4The mounting groove 230 is extended along the length direction of the axis of the mounting hole 210, and does not penetrate the connecting seat 200. The mounting groove 230 is completely communicated with the arc part 211. The reinforcing rod 700 is mounted in the mounting groove 230 and close to the arc groove. When the bone needle 400 is mounted in the mounting hole 210, the outer wall of the reinforcing rod 700 contacts the threaded part of the bone needle 400.

[0038] With reference to Figure 6 The reinforcing rod 700 is provided with the insertion hole 710 at one end. The pressing rod 720 is inserted in the insertion hole 710. The pressing rod 720 is parallel to the driving rod 610. One end of the pressing rod 720 extends out of the reinforcing rod 700 and contacts the nut 410. The reinforcing rod 700 is provided with the through groove 730 at the circumference. The through grooves 730 are distributed at intervals along the circumference of the reinforcing rod 700. The rubber ring 740 is wrapped on the outer wall of the reinforcing rod 700 to seal the through grooves 730. The extrusion balls 620 are filled in the insertion hole 710 and the through grooves 730. The extrusion balls 620 can be different in size. When the pressing rod 720 is inserted in the reinforcing rod 700, one end of the pressing rod 720 abuts against the end surface of the nut 410. The extrusion balls 620 are extruded to extrude the rubber ring 740. The rubber ring 740 is deformed and adheres to the threaded part of the bone needle 400. The connection between the reinforcing rod 700 and the bone needle 400 is further enhanced.

[0039] With reference to Figure 7 The distance between the inner wall of the mounting groove 230 between the two reinforcing rods 700 and the bone needle 400 is different. The distance between the inner wall of the mounting groove 230 between the two reinforcing rods 700 and the bone needle 400 is different. The inner wall of the mounting groove 230 between the two reinforcing rods 700 is closest to the bone needle 400. The distance gradually increases from the middle to the reinforcing rod 700. When the fixing assembly 300 drives the two connecting seats 200 to approach, the inner wall of the mounting groove 230 can guide the two reinforcing rods 700 to move away from each other and approach the bone needle 400 in a certain direction. The contact between the reinforcing rod 700 and the bone needle 400 is more close and uniform.

[0040] With reference to Figure 6 and Figure 7The first pressing plate 800 and the second pressing plate 900 are both arc-shaped plate structures and are made of a rigid material such as a steel plate. The first pressing plate 800 and the reinforcing rod 700 correspond to each other, one end of the first pressing plate 800 is connected with a connecting block 810, the connecting block 810 is fixedly connected with the upper end of the reinforcing rod 700, the rubber ring 740 is in contact with the side wall of the first pressing plate 800, and the first pressing plate 800 is extruded when the extrusion ball 620 extrudes the bone needle 400. The other end of the first pressing plate 800 is in contact with the second pressing plate 900. When the two connecting seats 200 are driven to be close to each other by the driving assembly 300, the inner wall of the mounting groove 230 extrudes the two reinforcing rods 700, the two reinforcing rods 700 have a tendency to move towards the first pressing plate 800, and the contact pressure between the reinforcing rod 700 and the bone needle 400 is increased.

[0041] With reference to Figure 8 The second pressing plate 900 is provided with a second channel 910, the second channel 910 is communicated with the first channel 220, and the extrusion ball 620 is filled in the second channel 910. The first pressing plate 800 is provided with a rigid push block 820, the first pressing plate 800 is connected with the second pressing plate 900 through the push block 820, and a small gap is left between the first pressing plate 800 and the second pressing plate 900. The push block 820 extends into the second channel 910, and the push block 820 extending into the second channel 910 is in a semispherical structure. When the two reinforcing rods 700 have a tendency to move towards the first pressing plate 800, the first pressing plate 800 drives the push block 820 to push the extrusion ball 620 in the second channel 910, the extrusion ball 620 in the first channel 220 and the second channel 910 generates greater pressure after being extruded, further increasing the extrusion force on the pressing rod 500, thereby further enhancing the connection stability between the inserting rod 310 and the adjustable track 100.

[0042] In addition, it should be noted that the second pressing plate 900 can also partially extend into the other arc part 211 in the mounting hole 210, so that the second pressing plate 900 is in contact with the threaded part of the bone needle 400, thereby increasing the fixing effect on the bone needle 400. The structure and implementation principle of the reinforcing rod 700, the first pressing plate 800 and the second pressing plate 900 of the embodiment 2 are also applicable to the connecting seat 200 connected with the screw rod 320, except that the connecting seat 200 connected with the screw rod 320 does not need to be provided with the driving assembly 600, and the corresponding second pressing plate 900 does not need to be provided with the second channel 910, which is not described in the application embodiment.

[0043] The implementation principle of the bone fracture end healing bridge of the application embodiment 2 is as follows: The extrusion member transmits pressure to the abutting lever 500, so that the abutting lever 500 abuts against the inner wall of the adjustable track 100, increasing the friction between the insertion rod 310 and the adjustable track 100; the reinforcing rod 700 is in contact with the threaded part of the bone pin 400, and further enhances the connection tightness with the bone pin 400 through the action of the lower pressing rod 720 and the extrusion ball 620; the special spacing design of the inner wall of the mounting groove 230 and the reinforcing rod 700 guides the reinforcing rod 700 to tightly contact the bone pin 400; the extrusion ball 620 in the second abutting plate 900 is pushed by the push block 820 to increase the extrusion force on the abutting lever 500. These structures work together to improve the stability and reliability of the bone fracture end healing bridge from multiple aspects, ensuring that the bone pin 400 will not displace or fall off during the healing process, which helps the stable healing of the bone fracture end.

[0044] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A bone end healing bridge, characterized in that, The utility model provides an adjustable rail (100) is hollow bar structure of two ends open, Two connecting bases (200) are installed on the two ends of the adjustable rail (100) respectively, the connecting base (200) is provided with mounting hole (210), the mounting hole (210) includes two arc parts (211) and two plane parts (212), two plane parts (212) are provided mutually parallel, and the two ends of arc direction of arc part (211) are connected with one end of two plane parts (212) respectively, A fixing assembly (300) is installed on the adjustable rail (100) and is used to drive two connecting bases (200) to approach or move away, A bone needle (400) passes through the mounting hole (210), and the outer wall of the bone needle (400) is provided with two matching surfaces (420), the matching surface (420) is attached to the plane part (212), There are two nuts (410) corresponding to one bone needle (400), and the bone needle (400) is fixedly installed on the connecting base (200) through the two nuts (410). The fixing assembly (300) includes a plug rod (310) and a clasp spring (330), the rod wall of the plug rod (310) is provided with a ring groove (311), the plug rod (310) is inserted into the adjustable rail (100), the clasp spring (330) is embedded on the hollow inner wall of the adjustable rail (100), and the clasp spring (330) is clamped in the ring groove (311); the fixing assembly (300) further includes a screw rod (320), the screw rod (320) is fixedly installed on another connecting base (200), the adjustable rail (100) is provided with a threaded hole, and the screw rod (320) is threadedly connected with the adjustable rail (100).

2. A bone end healing bridge according to claim 1, wherein, A pressing rod (500) is slidingly installed on the circumferential side of the plug rod (310), the pressing rod (500) slides along the radial direction of the plug rod (310), and a driving assembly (600) for driving the pressing rod (500) to abut against the inner wall of the adjustable rail (100) is installed on the connecting base (200).

3. A bone end healing bridge according to claim 2, wherein, The driving assembly (600) includes a pressing piece for pressing the end of the pressing rod (500), a first channel (220) is formed between the connecting base (200) and the plug rod (310), one end of the pressing rod (500) extends into the first channel (220), the driving assembly (600) further includes a driving rod (610), one end of the driving rod (610) is inserted into the connecting base (200), one end of the driving rod (610) extends out of the connecting base (200) and contacts the nut (410), the driving rod (610) is pressed downward along with the rotation of the nut (410), the pressing piece is pressed to the pressing rod (500) to slide outward to the plug rod (310).

4. A bone end healing bridge according to claim 3, wherein, The pressing piece includes a plurality of pressing balls (620), and the pressing balls (620) are filled in the first channel (220).

5. A bone end healing bridge according to claim 4, wherein, ​ 6. A bone end healing bridge according to claim 4, wherein, The connecting seat (200) provided with the insertion rod (310) is provided with two reinforcing rods (700), one surface of the connecting seat (200) is provided with a mounting groove (230), the depth of the mounting groove (230) extends along the length direction of the axis of the mounting hole (210), the mounting groove (230) does not penetrate the connecting seat (200), the mounting groove (230) is completely communicated with an arc part (211), the reinforcing rod (700) is mounted in the mounting groove (230), when the bone needle (400) is mounted in the mounting hole (210), the outer wall of the reinforcing rod (700) is in contact with the threaded part of the bone needle (400), one end of the reinforcing rod (700) is provided with an insertion hole (710), the reinforcing rod (700) is provided with a pressing rod (720) at the insertion hole (710), the outer wall of the reinforcing rod (700) is provided with a through groove (730), the through groove (730) is communicated with the insertion hole (710), the outer wall of the reinforcing rod (700) is wrapped with a rubber ring (740) for sealing the through groove (730), the insertion hole (710) and the through groove (730) of the reinforcing rod (700) are filled with an extrusion ball (620), when the pressing rod (720) is inserted into the reinforcing rod (700), one end of the pressing rod (720) is in abutment with the end face of the nut (410), and the extrusion ball (620) extrudes the rubber ring (740).

7. A bone end healing bridge according to claim 6, wherein, The distance between the inner wall of the mounting groove (230) between the two reinforcing rods (700) and the bone needle (400) is different, the inner wall of the mounting groove (230) at the most middle position between the two reinforcing rods (700) is closest to the bone needle (400), and the distance between the mounting groove (230) and the bone needle (400) gradually increases from the most middle position between the two reinforcing rods (700) to the reinforcing rod (700).

8. A bone end healing bridge according to claim 7, wherein, The connecting seat (200) is further provided with two first pressing plates (800) and a second pressing plate (900) in the mounting groove (230), the first pressing plate (800) and the second pressing plate (900) are in arc plate structure, the first pressing plate (800) corresponds to the reinforcing rod (700) one by one, one end of the first pressing plate (800) is connected with the reinforcing rod (700), the other end of the first pressing plate (800) is close to the second pressing plate (900), when the fixing assembly (300) drives the two connecting seats (200) to approach each other, the inner wall of the mounting groove (230) extrudes the two reinforcing rods (700), and the two reinforcing rods (700) have a tendency to move towards the first pressing plate (800).

9. A bone end healing bridge according to claim 8, wherein, The second pressing plate (900) is provided with a second channel (910) therein, the second channel (910) is communicated with the first channel (220), the second channel (910) is filled with an extrusion ball (620), the first pressing plate (800) is provided with a push block (820), the push block (820) extends into the second channel (910), when the two reinforcing rods (700) have a tendency to move towards the first pressing plate (800), the push block (820) has a tendency to push the extrusion ball (620).

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