Three-dimensional segmented adjustable distal radius internal fixator and use method thereof

Abstract

The invention discloses a three-dimensional segmented adjustable distal radius internal fixator and a using method thereof, and relates to the technical field of orthopedic internal fixing devices.The three-dimensional segmented adjustable distal radius internal fixator comprises a multi-segment adjustable bone fracture plate, and the multi-segment adjustable bone fracture plate comprises a near-end module, a middle connecting module and a distal-end module; the screw rod adjusting frame structure is arranged among the near-end module, the middle connecting module and the far-end module; the tail end of the far-end module is further provided with a hook claw structure and a positioning posture adjusting telescopic arm assembled with the multiple sections of adjustable bone fracture plates. The bone fracture plate is centered and positioned on the central axis of the radius backbone through the positioning posture-adjusting telescopic arm, the problems of radian mismatching and placement position are solved through telescopic sliding of the middle connecting module and self-adaptive angle deflection of the far-end module, stable pressurization is carried out to promote healing, and under the effect of a hook claw structure, the bone fracture plate is fixed to the middle of the radius backbone through the positioning posture-adjusting telescopic arm. And more complicated fracture types are further reinforced and covered.

Description

Technical Field

[0001] This invention relates to the field of orthopedic internal fixation devices, specifically a three-dimensional segmented adjustable distal radius internal fixator and its usage method. Background Technology

[0002] Surgical treatment of distal radius fractures generally employs open reduction and internal fixation (ORIF): under general or local anesthesia, the skin and soft tissue are cut open to directly observe and reduce the distal radius, and it is fixed using a combination of metal instruments such as plates and screws. However, in practice, the following drawbacks have been found.

[0003] Firstly, for distal radius fractures, due to the special physiological structure, fixation with a single plate is difficult and ineffective.

[0004] Secondly, the steel plate structure is fixed, difficult to adjust, and hard to adapt to the physiological characteristics of the distal radius.

[0005] Thirdly, the position of the plate needs to be repeatedly adjusted during the operation to be placed in the center of the radial shaft. Due to manual adjustment, the surgical precision and efficiency are not good. Summary of the Invention

[0006] The purpose of this invention is to provide a three-dimensional segmented adjustable distal radius internal fixator and its method of use. By setting a positioning and adjusting telescopic arm, the bone plate is positioned centrally on the central axis of the radial shaft. Through the telescopic sliding of the intermediate connecting module and the adaptive angle deflection of the distal module, the problems of curvature mismatch and placement position are solved, so as to apply stable pressure to promote healing. With the action of the hook structure, it further strengthens and covers more complex fracture types.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a three-dimensional segmented adjustable distal radius internal fixator, comprising: a multi-segment adjustable bone plate, the multi-segment adjustable bone plate including a proximal module, an intermediate connecting module, and a distal module; and a screw adjustment frame structure disposed between the proximal module, the intermediate connecting module, and the distal module. When the screw adjustment frame structure is in operation, the intermediate connecting module slides and extends relative to the proximal module to achieve dynamic compression and position adjustment of the distal radius, and drives the distal module to deflect at an angle in multiple planes to conform to the physiological curvature of the distal radius; the distal module is also provided with a hook structure at its end for hooking fracture fragments or ligaments of the distal radius; and a positioning and adjusting telescopic arm assembled with the multi-segment adjustable bone plate, the positioning and adjusting telescopic arm expanding or contracting symmetrically from the center to both sides to keep the multi-segment adjustable bone plate on the midline of the radial shaft.

[0008] Preferably, the proximal module includes a first plate, a first mounting sleeve located at the center of the first plate for a detachable assembly for positioning the attitude-adjusting telescopic arm, and a first screw hole arranged in a linear array on the first plate, wherein a mounting groove is provided at the end of the first plate away from the first screw hole.

[0009] Preferably, the intermediate connecting module includes a second plate with two elongated slots on its upper surface. The bottom of the first plate is fixed with an assembly block that slides and limits the two elongated slots. A second spring is connected between the assembly block and one end of the elongated slot. A movable block is also slidably assembled near the distal module of each elongated slot. A first spring is connected between each movable block and the other end of the elongated slot. There are also second screw holes on both sides of the second plate for inserting screws to fix the second plate.

[0010] Preferably, the remote module includes a connecting plate with a Z-shaped structure. One end of the connecting plate is assembled to the execution end of the screw adjustment frame structure, and the other end extends to be connected to a third plate. The third plate has several third screw holes for screws to be driven in for fixing, and several sliding grooves at the front end of the third plate for the assembly of the claw structure.

[0011] Preferably, the screw adjusting bracket structure includes a connecting block. A first and second transmission plate, respectively, are mounted on both sides of the connecting block via a first and a second pin. The end of the first transmission plate away from the connecting block is rotatably assembled with a mounting groove via a third pin. An extension plate is fixedly connected to the end of the second transmission plate away from the connecting block. The second transmission plate and the extension plate form a "√" shape and are rotatably connected to two movable blocks at the corner via a fourth pin. The second plate also has a second mounting sleeve penetrating the second plate, a bushing fixed to the connecting block and penetrating a through hole in the connecting block, and an adjusting screw located on the bushing and threadedly connected to the second mounting sleeve. The top of the adjusting screw has a second handle, the diameter of which is larger than the diameter of the bushing. When the second handle rotates, causing the adjusting screw to spiral downwards relative to the second mounting sleeve, the second plate moves away from the first plate within the two right-angled triangular structures formed by the first transmission plate, the second transmission plate, and the second plate, while simultaneously causing the extension plate to extend forward and deflect.

[0012] Preferably, the hook structure includes several sets of hook-shaped parts, which can be respectively assembled in the slide groove; each set of hook-shaped parts includes a slider, which can slide horizontally in the slide groove, and a third mounting sleeve fixed on the slider. The outer wall of the third mounting sleeve is equipped with a rotatable rotating sleeve, and a hook body is connected to the rotating sleeve. The front end of the hook body is provided with a hook portion, which has a certain toughness, and a bolt threaded with the third mounting sleeve for locking the slider relative to the slide groove position.

[0013] Preferably, the positioning and adjusting telescopic arm includes a scissor-type telescopic frame, the central axis of which is provided with a mounting hole that matches the first mounting sleeve, the scissor-type telescopic frame expanding or contracting to both sides with the first mounting sleeve as the center, and clamping blocks located at the lower part of the axes at both ends of the scissor-type telescopic frame. When the clamping blocks at both ends are respectively in contact with the edges of the radial shaft, the multi-segment adjustable bone plate where the first mounting sleeve is located can be placed on the central axis of the radial shaft.

[0014] Preferably, the first mounting sleeve has an internal spiral and a fastening stud that is fitted to the internal thread, and the top of the fastening stud is provided with a first handle.

[0015] Preferably, a long strip is fixed to the top of the shaft in the middle of the scissor-type telescopic frame, and locking grooves are opened on both sides of the long strip. The locking grooves are provided with movable locking bolts, which can act on one of the shafts of the scissor-type telescopic frame and are used to lock the degree of expansion and contraction.

[0016] A method of using an internal fixation device, such as the aforementioned three-dimensional segmented adjustable distal radius internal fixation device, the method of use includes the following steps:

[0017] S1: The multi-segment adjustable bone plate is initially placed on the distal end of the radius. The positioning and adjustment telescopic arm is installed and retracted symmetrically inward so that the bone plate is centered on the central axis of the radial shaft and temporarily fixed.

[0018] S2: Through the screw adjustment frame structure, the intermediate connecting module is extended and slid towards the distal end of the radius, dynamically pressurizing and adjusting the position of the distal end of the radius. At the same time, the distal module is driven to deflect at an angle, and the resulting deflection arc matches the palmar tilt angle of the distal end of the radius.

[0019] S3: By setting the hook structure, adjust the extension length and deflection angle of the hook structure so that it can hook onto the fracture fragments or ligaments at the distal end of the radius.

[0020] S4: Drive screws into the corresponding screw holes for final fixation, and remove the positioning and attitude adjustment telescopic arm.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. This invention uses a positioning and adjustment telescopic arm to center the bone plate on the central axis of the radius shaft, improving surgical precision and efficiency and reducing the need for repeated plate adjustments during surgery. By using the telescopic sliding of the intermediate connecting module and the adaptive angle deflection of the distal module, the invention solves the problems of curvature mismatch and placement, thereby providing stable pressure to promote healing. Furthermore, the hook structure further reinforces and covers more complex fracture types.

[0023] 2. As another embodiment of the present invention, the proximal module, the intermediate connecting module and the distal module are connected into a cooperative transmission structure by the set screw adjustment frame structure, which drives the second plate to slide relative to the first plate, and at the same time drives the connecting plate to extend forward and adaptively deflect, thereby completely fitting the distal end of the radius.

[0024] 3. As another embodiment of the present invention, a hook structure is further provided, wherein the hook body can be extended and retracted at different lengths and angles to hook onto the fracture fragments or ligaments of the distal radius. Attached Figure Description

[0025] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0026] Figure 2 for Figure 1 A second-view 3D structural diagram;

[0027] Figure 3 for Figure 1 A front view structural diagram;

[0028] Figure 4 This is an enlarged structural diagram of point A in the present invention;

[0029] Figure 5 This is an enlarged structural diagram of point B in the present invention;

[0030] Figure 6 This is a schematic diagram of the assembly structure of the remote module and the hook structure of the present invention;

[0031] Figure 7 This is an enlarged structural diagram of point C in the present invention;

[0032] Figure 8 This is a schematic diagram of the structure in the pre-operation state of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the present invention after it has been in operation;

[0034] Figure 10 for Figure 9 A schematic diagram of the side view structure;

[0035] Figure 11 This is a partially enlarged schematic diagram of the interaction between the hook structure and the distal radius of the present invention;

[0036] Figure 12 This is a three-dimensional structural diagram of the near-end module of the present invention.

[0037] In the diagram: 111, First plate; 112, Mounting slot; 113, First screw hole;

[0038] 2. Positioning and adjusting telescopic arm; 211. First mounting sleeve; 212. Long strip; 213. Locking groove; 214. Locking bolt; 215. Scissor-type telescopic frame; 216. Clamping block; 220. Fastening stud; 221. First handle;

[0039] 312. First transmission plate; 313. Connecting block; 314. Second transmission plate; 315. Extension plate; 316. Movable block; 317. Adjusting screw; 318. Bushing; 319. Second handle;

[0040] 411. Connecting plate; 412. Third plate; 413. Hook; 415. Slide groove; 416. Slider; 417. Third mounting sleeve; 418. Rotating sleeve; 4120. Third screw hole;

[0041] 511. Second plate; 512. Second mounting sleeve; 513. Long slot; 514. First spring; 515. Second screw hole; 516. Assembly block; 517. Second spring;

[0042] 611. Radius; 6111. Radial shaft; 6112. Distal radius. Detailed Implementation

[0043] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0044] Example 1

[0045] Please see Figures 1 to 12The present invention preferably provides a technical solution: a three-dimensional segmented adjustable distal radius internal fixator, comprising: a multi-segment adjustable bone plate, the multi-segment adjustable bone plate including a proximal module, an intermediate connecting module and a distal module; and a screw adjustment frame structure disposed between the proximal module, the intermediate connecting module and the distal module. When the screw adjustment frame structure is in operation, the intermediate connecting module slides and extends relative to the proximal module to achieve dynamic compression and position adjustment of the distal radius 6112, and drives the distal module to deflect at an angle in multiple planes to conform to the physiological curvature of the distal radius 6112; the distal module is also provided with a hook structure at its end for hooking the fracture fragments or ligaments of the distal radius 6112; and a positioning and adjusting telescopic arm 2 assembled with the multi-segment adjustable bone plate. The positioning and adjusting telescopic arm 2 expands or contracts symmetrically from the center to both sides to keep the multi-segment adjustable bone plate on the central axis of the radial shaft 6111.

[0046] In this application, the bone plate is designed with multiple segments, such as... Figure 1 , 2 As shown in Figure 3, it specifically consists of a near-end module, an intermediate connecting module, a far-end module, and a screw adjustment bracket structure, combined with... Figure 8 , 9 As shown in Figure 10, the radius 611 is composed of the radial shaft 6111 and the distal radius 6112. First, the bone plate is placed at the fracture site of the radius, and the positioning and adjusting telescopic arm 2 is assembled with the multi-segment adjustable bone plate. By retracting the positioning and adjusting telescopic arm 2 towards the center position, the bone plate is centered on the central axis of the radial shaft 6111 and temporarily fixed. Figures 8 to 9 The state change, secondly. Combined with Figure 10 As shown, the screw-adjusting bracket structure allows the intermediate connecting module to slide and extend towards the distal radius 6112, dynamically applying pressure and adjusting the position of the distal radius 6112. Simultaneously, it causes the distal module to deflect at an angle, the resulting deflection arc matching the palmar tilt angle of the distal radius 6112. Then, through the designed hook structure, such as... Figure 8 As shown, adjust the extension length and deflection angle of the hook structure so that it hooks the fracture fragment or ligament of the distal radius 6112; finally, insert screws into the bone plate for final fixation and remove the positioning and adjustment telescopic arm 2.

[0047] This design, through the positioning and adjustment telescopic arm 2, ensures that the bone plate is centered on the central axis of the radius shaft 6111, improving surgical precision and efficiency and reducing the need for repeated adjustments to the plate during surgery. By using the telescopic sliding of the intermediate connecting module and the adaptive angle deflection of the distal module, it solves the problems of curvature mismatch and placement, thereby providing stable pressure to promote healing. With the further action of the hook structure, it further reinforces and covers more complex fracture types.

[0048] Furthermore, the near-end module includes a first plate 111, a first mounting sleeve 211 located at the center of the first plate 111 for detachable assembly of the attitude adjustment telescopic arm 2, and first screw holes 113 arranged in a linear array on the first plate 111, and a mounting groove 112 is provided at the end of the first plate 111 away from the first screw holes 113.

[0049] By configuring the near-end module, such as Figure 2 As shown, the fixation module that acts with the radial shaft 6111 can be detachably assembled with the positioning and adjustment telescopic arm 2 and realize the center installation of the bone plate, providing a basis for subsequent adjustment. Through the first screw hole 113, the installation basis can be provided for the final fixation of the bone plate.

[0050] Furthermore, the intermediate connecting module includes a second plate 511, with two elongated slots 513 formed on the upper surface of the second plate 511. An assembly block 516 is fixed at the bottom of the first plate 111 and slides with the two elongated slots 513. A second spring piece 517 is connected between the assembly block 516 and one end of the elongated slot 513. A movable block 316 is also slidably assembled near the distal module of each elongated slot 513. A first spring piece 514 is connected between each movable block 316 and the other end of the elongated slot 513. There are also second screw holes 515 formed on both sides of the second plate 511 for inserting screws to fix the second plate 511.

[0051] Furthermore, the remote module includes a connecting plate 411, which has a Z-shaped structure. One end of the connecting plate 411 is mounted on the execution end of the screw adjustment frame structure, and the other end extends to connect to a third plate 412. The third plate 412 has several third screw holes 4120 for inserting screws for fixing, and several sliding grooves 415 at the front end of the third plate 412 for assembling the claw structure.

[0052] With the further configuration of intermediate connection modules and remote modules, such as Figure 2 , 3 As shown, the near-end module, intermediate connecting module, and far-end module are connected into a cooperative transmission structure through the set screw adjustment bracket structure, combined with Figure 10 As shown, under the action of the screw adjustment frame structure, the second plate 511 can slide relative to the first plate 111, while driving the connecting plate 411 to extend forward and adaptively deflect, thereby completely fitting the distal radius 6112.

[0053] Example 2

[0054] In another embodiment of the present invention, the screw adjusting bracket structure includes a connecting block 313. A first transmission plate 312 and a second transmission plate 314, which can be deflected, are respectively mounted on both sides of the connecting block 313 via a first pin and a second pin. The end of the first transmission plate 312 away from the connecting block 313 is rotatably assembled with the mounting groove 112 via a third pin. An extension plate 315 is fixedly connected to the end of the second transmission plate 314 away from the connecting block 313. The second transmission plate 314 and the extension plate 315 form a "√" shape and are rotatably connected to two movable blocks 316 at the corner via a fourth pin. A second mounting sleeve 512 penetrating the second plate 511 is also provided on the second plate 511. The bushing 318 is fixed on the connecting block 313 and passes through the through hole in the connecting block 313, and the adjusting screw 317 is provided on the bushing 318 and threadedly connected to the second mounting sleeve 512. The top of the adjusting screw 317 is provided with a second handle 319. The diameter of the second handle 319 is larger than the diameter of the bushing 318. When the second handle 319 rotates and drives the adjusting screw 317 to spiral down relative to the second mounting sleeve 512, in the two right-angled triangular structures formed by the first transmission plate 312, the second transmission plate 314 and the second plate 511, the second plate 511 moves away from the first plate 111, and at the same time the extension plate 315 has a forward extension and deflection action.

[0055] In this embodiment, such as Figure 1 , 2 As shown in 3, 4, and 10, firstly, since the second plate 511 is slidably connected to the first plate 111, after the first plate 111 is centered and fixed, manually rotating the second handle 319 causes the adjusting screw 317 to move spirally downward relative to the second mounting sleeve 512, further causing the connecting block 313 to press down. Since the movable block 316 is fixed on the second plate 511, as... Figure 2 , 3 As shown, during the downward pressing of the connecting block 313, under the transmission action of the first transmission plate 312 on the left, the second plate 511 will move towards the connecting plate 411, causing the second spring piece 517 where the assembly block 516 is located to be compressed. At the same time, under the action of the second transmission plate 314 on the right, the movable block 316 will extend forward relative to the second mounting sleeve 512 to compress the first spring piece 514, causing the extension plate 315 and the connecting plate 411 to have a forward extension and deflection action, combined with... Figure 10 , 11 As shown, this action is applied at the palmar tilt angle of the distal radius 6112 to perfectly conform to the physiological curvature of the distal radius 6112, as... Figure 6 As shown, a screw can be driven into the third screw hole 4120 to fix the device.

[0056] Example 3

[0057] In another embodiment of the present invention, the hook structure includes several sets of hook-shaped parts, which can be respectively assembled in the slide groove 415; each set of hook-shaped parts includes a slider 416, which can slide horizontally in the slide groove 415, and a third mounting sleeve 417 fixed on the slider 416. A rotatable rotating sleeve 418 is installed on the outer wall of the third mounting sleeve 417. A hook body 413 is connected to the rotating sleeve 418. The front end of the hook body 413 is provided with a hook portion, which has a certain toughness, and a bolt threadedly assembled with the third mounting sleeve 417 for locking the position of the slider 416 relative to the slide groove 415.

[0058] Building upon Example 2, a further hook structure is provided to address more complex fracture types, such as... Figure 2 , 6 As shown in Figure 7, each slider 416 can extend and retract within the groove 415, thereby adjusting the extension length of the hook body 413. Combined with the rotatable assembly of the rotating sleeve 418, this allows for the angular deflection of the hook body 413. Figure 8 , 9 As shown, the hook 413 acts on the distribution of the distal radius 6112. It can extend and retract at different lengths and angles to hook onto the fracture fragments or ligaments of the distal radius 6112. Through bolts, it can spiral into the third mounting sleeve 417 and penetrate the slider 416 and the bottom groove 415 to lock the position of the slider 416.

[0059] Example 4

[0060] As another embodiment of the present invention, the positioning and adjusting telescopic arm 2 includes a scissor-type telescopic frame 215. The shaft in the middle of the scissor-type telescopic frame 215 has a mounting hole for assembly with the first mounting sleeve 211. The scissor-type telescopic frame 215 expands or contracts to both sides with the first mounting sleeve 211 as the center, and clamping blocks 216 are provided at the lower part of the shaft at both ends of the scissor-type telescopic frame 215. When the clamping blocks 216 at both ends are respectively attached to the two side edges of the radial shaft 6111, the multi-segment adjustable bone plate where the first mounting sleeve 211 is located can be placed on the central axis of the radial shaft 6111.

[0061] Furthermore, the first mounting sleeve 211 has an internal spiral inside and a fastening stud 220 that is assembled with the internal thread, and a first handle 221 is provided on the top of the fastening stud 220.

[0062] Furthermore, a long strip 212 is fixed to the top of the shaft in the middle of the scissor-type telescopic frame 215, and locking grooves 213 are opened on both sides of the long strip 212. The locking grooves 213 are provided with movable locking bolts 214. The locking bolts 214 can act on one of the shafts of the scissor-type telescopic frame 215 and are used to lock the degree of expansion and contraction.

[0063] In this embodiment, a positioning and attitude-adjusting telescopic arm 2 is provided, such as Figure 2 , 5 As shown, a mounting hole for assembling the first mounting sleeve 211 is provided on the central axis of the scissor-type telescopic frame 215. The positioning and adjusting telescopic arm 2 is assembled with the first mounting sleeve 211. By manually turning the first handle 221, the fastening stud 220 is driven downwards, achieving pre-assembly of the scissor-type telescopic frame 215 with the first plate 111. Under the action of the scissor-type telescopic frame 215, the clamping blocks 216 on both sides symmetrically contract or expand around the first mounting sleeve 211. When the clamping blocks 216 are completely in contact with the edges of the radial shaft 6111, the first mounting sleeve 211 drives the first plate 111 to be centered and positioned on the central axis of the radial shaft 6111, thus achieving the centering action. This is achieved by locking the screw on the locking groove 213. Bolt 214, move the locking bolt 214 to one of the shaft positions on the scissor-type telescopic frame 215, and move it downwards in a spiral motion. The locking bolt 214, the locking groove 213 and the corresponding shaft position can form a locking mechanism for the initial locking of the scissor-type telescopic frame 215, that is, to achieve the pre-fixing of the center positioning. After the subsequent adjustment of the screw adjustment frame structure and the hook structure and the final position are obtained, the screw is driven in through the first screw hole 113 for final fixing. At this time, manually rotate the first handle 221 in the opposite direction, the fastening stud 220 spirals up relative to the first mounting sleeve 211 and disengages, and releases the expansion and contraction limit of the locking bolt 214 on the scissor-type telescopic frame 215. At this time, the positioning and attitude adjustment telescopic arm 2 can be removed.

[0064] Example 5

[0065] In the embodiments 1-4 above, a method of using an internal fixation device is extended, such as the three-dimensional segmented adjustable distal radius internal fixation device described above, the method of use includes the following steps:

[0066] S1: The multi-segment adjustable bone plate is initially placed on the distal end of the radius. The positioning and posture adjustment telescopic arm 2 is installed and retracted symmetrically inward so that the bone plate is centered on the central axis of the radial shaft 6111 and temporarily fixed.

[0067] S2: Through the screw adjustment frame structure, the intermediate connecting module is extended and slid towards the distal radius 6112, dynamically pressurizing and adjusting the position of the distal radius 6112. At the same time, the distal module is driven to deflect at an angle, and the resulting deflection arc matches the palmar tilt angle of the distal radius 6112.

[0068] S3: By setting the hook structure, adjust the extension length and deflection angle of the hook structure so that it can hook the fracture fragment or ligament of the distal radius 6112.

[0069] S4: Drive screws into the corresponding screw holes for final fixation, and remove the positioning and attitude adjustment telescopic arm 2.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a unit. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolt connections.

[0071] In addition, all the connections / connections mentioned in the article do not refer to direct connection of components, but rather to the formation of a better connection structure by adding or removing connecting accessories according to the specific implementation situation.

[0072] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A three-dimensional segmented adjustable distal radius internal fixator, characterized in that, include: A multi-segment adjustable bone plate, comprising a proximal module, an intermediate connecting module, and a distal module; And a screw adjustment frame structure is provided between the proximal module, the intermediate connecting module and the distal module. When the screw adjustment frame structure is running, the intermediate connecting module slides and extends relative to the proximal module to realize dynamic pressure and position adjustment of the distal radius (6112), and drives the distal module to deflect in multiple planes to conform to the physiological curvature of the distal radius (6112). The distal module is also provided with a hook structure at its end for hooking the fracture fragments or ligaments of the distal radius (6112). And a positioning and adjusting telescopic arm (2) assembled with the multi-segment adjustable bone plate, the positioning and adjusting telescopic arm (2) expanding or contracting symmetrically from the center to both sides to keep the multi-segment adjustable bone plate on the central axis of the radial shaft (6111).

2. The three-dimensional segmented adjustable distal radius internal fixator according to claim 1, characterized in that: The near-end module includes a first plate (111), a first mounting sleeve (211) located at the center of the first plate (111) for detachable assembly of the posture adjustment telescopic arm (2), and a first screw hole (113) arranged in a linear array on the first plate (111), and a mounting groove (112) is provided at the end of the first plate (111) away from the first screw hole (113).

3. The three-dimensional segmented adjustable distal radius internal fixator according to claim 2, characterized in that: The intermediate connecting module includes a second plate (511), on the upper surface of which two long slots (513) are formed. The bottom of the first plate (111) is fixed with an assembly block (516) that slides and limits the two long slots (513). A second spring piece (517) is connected between the assembly block (516) and one end of the long slot (513). A movable block (316) is also slidably assembled near the far end module of each long slot (513). A first spring piece (514) is connected between each movable block (316) and the other end of the long slot (513). There are also second screw holes (515) on both sides of the second plate (511) for driving screws to fix the second plate (511).

4. The three-dimensional segmented adjustable distal radius internal fixator according to claim 1, characterized in that: The remote module includes a connecting plate (411), which has a Z-shaped structure. One end of the connecting plate (411) is mounted on the execution end of the screw adjustment frame structure, and the other end extends to be connected to a third plate (412). The third plate (412) has several third screw holes (4120) for screws to be driven in for fixing, and several sliding grooves (415) at the front end of the third plate (412) for the assembly of the claw structure.

5. The three-dimensional segmented adjustable distal radius internal fixator according to claim 3, characterized in that: The screw adjustment frame structure includes a connecting block (313). On both sides of the connecting block (313), a deflectable first transmission plate (312) and a second transmission plate (314) are respectively installed via a first pin and a second pin. The end of the first transmission plate (312) away from the connecting block (313) is rotatably assembled with the mounting groove (112) via a third pin. An extension plate (315) is fixedly connected to the end of the second transmission plate (314) away from the connecting block (313). The second transmission plate (314) and the extension plate (315) form a "√" shape and are rotatably connected to two movable blocks (316) at the corner position through a fourth pin. The second plate (511) is also provided with a second mounting sleeve (512) that passes through the second plate (511), a bushing (318) that is fixed on the connecting block (313) and passes through the through hole on the connecting block (313), and an adjusting screw (317) that is provided on the bushing (318) and threadedly connected to the second mounting sleeve (512). The top of the adjusting screw (317) is provided with a second handle (319). The diameter of the second handle (319) is larger than the diameter of the bushing (318). When the second handle (319) rotates and drives the adjusting screw (317) to spiral down relative to the second mounting sleeve (512), in the two right-angled triangle structures formed by the first transmission plate (312), the second transmission plate (314) and the second plate (511), the second plate (511) moves away from the first plate (111), and at the same time the extension plate (315) has a forward extension and deflection action.

6. The three-dimensional segmented adjustable distal radius internal fixator according to claim 1, characterized in that: The hook structure includes several sets of hook-shaped parts, which can be respectively assembled in the slide groove (415); each set of hook-shaped parts includes a slider (416), which can slide horizontally in the slide groove (415), and a third mounting sleeve (417) fixed on the slider (416). The outer wall of the third mounting sleeve (417) is equipped with a rotatable rotating sleeve (418). A hook body (413) is connected to the rotating sleeve (418). The front end of the hook body (413) is provided with a hook part, which has a certain toughness, and a bolt threaded to the third mounting sleeve (417) for locking the position of the slider (416) relative to the slide groove (415).

7. The three-dimensional segmented adjustable distal radius internal fixator according to claim 1, characterized in that: The positioning and attitude adjustment telescopic arm (2) includes a scissor-type telescopic frame (215). The central axis of the scissor-type telescopic frame (215) has an installation hole for assembly with the first mounting sleeve (211). The scissor-type telescopic frame (215) expands or contracts to both sides with the first mounting sleeve (211) as the center. It also has clamping blocks (216) located at the lower part of the axis at both ends of the scissor-type telescopic frame (215). When the clamping blocks (216) at both ends are respectively attached to the edges of the radial shaft (6111), the multi-segment adjustable bone plate where the first mounting sleeve (211) is located can be placed on the central axis of the radial shaft (6111).

8. The three-dimensional segmented adjustable distal radius internal fixator according to claim 2, characterized in that: The first mounting sleeve (211) has an internal spiral inside and a fastening stud (220) that is assembled with the internal thread. The fastening stud (220) has a first handle (221) on its top.

9. The three-dimensional segmented adjustable distal radius internal fixator according to claim 7, characterized in that: The top of the shaft in the middle of the scissor-type telescopic frame (215) is fixed with a long strip (212) and locking grooves (213) on both sides of the long strip (212). The locking grooves (213) are provided with movable locking bolts (214). The locking bolts (214) can act on one of the shafts of the scissor-type telescopic frame (215) and are used to lock the degree of expansion and contraction.

10. A method of using an internal fixation device, characterized in that: The three-dimensional segmented adjustable distal radius internal fixator as described in any one of claims 1-9, the method of use includes the following steps: S1: Place the multi-segment adjustable bone plate initially on the distal end of the radius, install the positioning and posture adjustment telescopic arm (2), and retract symmetrically inward so that the bone plate is centered on the central axis of the radial shaft (6111) and temporarily fixed. S2: Through the screw adjustment frame structure, the intermediate connecting module is extended and slid towards the distal radius (6112), dynamically pressurizing and adjusting the position of the distal radius (6112). At the same time, it drives the distal module to deflect at an angle, and the resulting deflection arc matches the palmar tilt angle of the distal radius (6112). S3: By setting the hook structure, adjust the extension length and deflection angle of the hook structure so that it can hook the fracture fragment or ligament of the distal radius (6112). S4: Drive screws into the corresponding screw holes for final fixation, and remove the positioning and attitude adjustment telescopic arm (2).

Images