Intelligent bidirectional stress adjusting external fixation support

Abstract

The application relates to an intelligent bidirectional stress adjusting external fixing support, an adjusting rod, a sliding matching shaft sleeve, a connecting screw sleeve, a fixed rod screw sleeve, a fixed rod, a cable transmission assembly, an electric drive assembly and a controller. One end of the fixed rod is connected to the sliding matching shaft sleeve, the sliding matching shaft sleeve is slidably sleeved on the adjusting rod, and the lower end of the sliding matching shaft sleeve is tightly connected with the connecting screw sleeve. The lower end of the connecting screw sleeve is threadedly connected with the fixed rod screw sleeve, and the fixed rod screw sleeve is fixed to the fixed rod through a pin. The electric drive assembly is connected with the adjusting rod through the cable transmission assembly, and the controller is connected with the electric drive assembly. The adjusting rod and the fixed rod are connected to fix a bone segment. The controller can drive the cable transmission assembly to pull the adjusting rod to slide along the axial direction of the adjusting rod through the electric drive assembly, and the adjusting rod is away from or close to the fixed rod, so that axial stress is given to a fracture end. The application has the beneficial effects that the automatic regulation and control of the stress of the fracture end are realized, manpower is saved, the safety and compliance in the treatment process of patients are improved, and key technical support is provided for the precise development of the treatment of the orthopedic external fixing support.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an intelligent bidirectional stress-adjustable external fixator. Background Technology

[0002] Bidirectional stress-adjustable external fixators are key fixation devices used in orthopedic clinics for fracture treatment. Their core function is to adjust the stress at the fracture ends to provide a suitable mechanical environment for bone tissue healing, avoid stress shielding, and promote bone regeneration. In the treatment of long bone fractures of the limbs, this type of device can control the stress at the fracture ends, directly affecting bone healing efficiency and treatment outcomes, and is an indispensable component of modern minimally invasive orthopedic treatment systems.

[0003] Currently, most mainstream bidirectional stress-adjustable external fixators in the industry rely on manual operation for adjustment. The adjustment structure of these traditional devices mostly uses threaded knobs, manual wrenches, or snap-on designs. Medical staff need to directly rotate the adjustment components or apply external force to push the frame in order to adjust the stress at the fracture ends; they rely entirely on human experience—either estimating the adjustment force by observing the scale markings on the device, lacking automated and precise control devices.

[0004] Traditional manual adjustment methods have significant technical shortcomings and cannot meet the clinical demand for precise and automated treatment. On the one hand, the precision of manual stress control is limited, and excessive or insufficient force may occur due to low precision or scale reading deviation, which may affect fracture healing. On the other hand, manual operation requires medical staff to make direct adjustments to the patient at close range, which is time-consuming and labor-intensive, and also places high demands on the proficiency of medical staff. Differences in adjustment among different operators may lead to unstable treatment results. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an intelligent bidirectional stress-adjustable external fixator, which solves the technical problems of the prior art relying on manual operation, inconvenient adjustment methods, and affecting the treatment effect.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] This invention provides an intelligent bidirectional stress-adjustable external fixation bracket, comprising an adjusting rod, a sliding bushing, a connecting threaded sleeve, a fixing rod, a fixed rod threaded sleeve, a cable transmission assembly, an electric drive assembly, and a controller. One end of the fixing rod is connected to the sliding bushing, which is slidably fitted onto the adjusting rod. The lower end of the sliding bushing is fastened to the connecting threaded sleeve. The lower end of the connecting threaded sleeve is threadedly connected to the fixed rod threaded sleeve, which is fixed to the fixing rod by a blocking pin. The electric drive assembly is connected to the adjusting rod via the cable transmission assembly, and the controller is connected to the electric drive assembly. Both the adjusting rod and the fixing rod are connected to the fixed bone segment. The controller, through the electric drive assembly, can drive the cable transmission assembly to pull the adjusting rod axially, moving it away from or closer to the fixing rod, to apply axial tensile or compressive stress to the fracture ends.

[0010] Optionally, the cable drive assembly includes a drive cable, a mounting assembly, a first elastic voltage regulating assembly, and a second elastic voltage regulating assembly. The drive cable includes a first cable, a second cable, and a third cable. The first cable is fixed to a connecting seat via a fixing screw three of the mounting assembly. The connecting seat is a hollow threaded sleeve with threads on its outer wall, which is threaded to the inner wall of the lower end of the adjusting rod. A fixing screw three is provided on its side wall to fix the first cable passing through the connecting seat. Both ends of the first cable pass around a first rotating shaft and a second rotating shaft radially provided on the sliding bushing, respectively. Furthermore, both ends of the first cable pass through cable holes provided on the adjusting rod and the sliding bushing, and connect to the connecting seat of the first elastic voltage regulating assembly. The first cable is connected to the connecting seat of the second elastic pressure regulating component; under the traction of the first elastic pressure regulating component and the second elastic pressure regulating component, the first cable can move up and down; one end of the second cable and the third cable are respectively connected to the connecting sleeve one at one end of the first elastic pressure regulating component and the connecting sleeve two at one end of the second elastic pressure regulating component, and the other end of the second cable and the third cable are respectively fixed to the drum of the electric drive component. The electric drive component pulls the second cable and the third cable respectively, and the second cable and the third cable respectively provide the first cable with the traction force for moving up and down through the first elastic pressure regulating component and the second elastic pressure regulating component, thereby providing the adjustment rod with the traction force for moving up and down.

[0011] Optionally, the elastic pressure regulating assembly includes a pressure regulating sleeve, an adjusting sleeve, a connecting sleeve, a cable fixing pin, a pressure regulating pin, a connecting seat, a cable fixing screw, a pressure regulating spring, and a pressure sensor. One end of the pressure regulating sleeve has a stepped inner wall for threaded connection to the adjusting sleeve, and the other end of the pressure regulating sleeve has a thread for threaded connection to the connecting sleeve. One end of the second cable passes through the axially provided transmission cable hole in the connecting sleeve, and the cable fixing screw is screwed in to secure the second cable to the connecting sleeve. The pressure regulating sleeve has a radially provided pressure regulating pin, and one side wall of the pressure regulating sleeve has an axially elongated hole through which the pressure regulating pin slidably passes. The connecting seat is located inside the pressure regulating sleeve and is slidably connected to it. One end of the connecting seat has a radially provided... A long hole is adapted to the pressure adjusting pin. The pressure adjusting pin passes through the radial long hole of the connecting seat. The other end of the connecting seat is axially provided with a transmission cable hole. The first cable passes through the transmission cable hole. A cable fixing pin is provided on one side wall of the connecting seat. Tightening the cable fixing pin can secure one end of the first cable to the connecting seat. A pressure sensor is provided inside the pressure adjusting sleeve. A pressure adjusting spring is provided between the pressure sensor and the connecting seat. The pressure sensor, the pressure adjusting spring, and the pressure adjusting sleeve are slidably connected. The second cable can provide traction force to the connecting sleeve and the pressure adjusting sleeve under the action of the electric drive component. Then, the first cable is provided with traction force through the bottom step of the pressure adjusting sleeve, the pressure sensor, the pressure adjusting spring, the pressure adjusting pin, and the connecting seat.

[0012] Optionally, the second elastic pressure regulating component includes a second pressure regulating sleeve, a second adjusting sleeve, a second connecting sleeve, a second cable fixing pin, a second pressure regulating pin, a second connecting seat, a second cable fixing screw, a second pressure regulating spring, and a second pressure sensor. One end of the inner wall of the second pressure regulating sleeve has a step, which is threaded to the second adjusting sleeve. The other end of the second pressure regulating sleeve has a thread, which is threaded to the second connecting sleeve. One end of the third cable passes through the axially provided transmission cable hole in the second connecting sleeve. The second cable fixing screw is screwed in to secure the third cable to the second connecting sleeve. The second pressure regulating sleeve has a radially provided pressure regulating pin, and an axially elongated hole on its side wall. The second pressure regulating pin slidably passes through the axially elongated hole. The second connecting seat is located inside the second pressure regulating sleeve and is slidably connected to it. One end of the second connecting seat has a radially provided elongated hole that matches the second pressure regulating pin. The second pressure regulating pin passes through the radially elongated hole of the second connecting seat. The other end of the second connecting seat... One end is provided with an axial drive cable hole, through which the first cable can be passed. The second side wall of the connecting seat is provided with a cable fixing pin. Tightening the cable fixing pin can secure one end of the first cable to the connecting seat. The second pressure sensor is located inside the second pressure regulating sleeve. The second pressure regulating spring is provided between the second pressure sensor and the second connecting seat. The second pressure sensor, the second pressure regulating spring, and the second pressure regulating sleeve are slidably connected. The third cable can provide traction force to the second connecting sleeve and the second pressure regulating sleeve under the action of the electric drive component. Then, through the bottom step of the second pressure regulating sleeve, the second pressure sensor, the second pressure regulating spring, the second pressure regulating pin, and the second connecting seat, traction force is provided to the other end of the first cable.

[0013] Alternatively, the mounting component structure may be any of the following;

[0014] a. The installation components include a connecting seat and a fixing screw three. The connecting seat is a hollow threaded sleeve with threads on its outer wall, which is threaded to the inner wall of the lower end of the adjusting rod. Its side wall is provided with a fixing screw three, which is used to fix the first cable passing through the connecting seat.

[0015] b. The installation components include a connecting post, a connecting rod, a fixing clamp one, and a fixing clamp two; the connecting rod is radially positioned at the lower end of the adjusting rod, the connecting post is located inside the lower end of the adjusting rod, and has a radially elongated hole. The connecting rod passes through the radially elongated hole at the lower end of the adjusting rod, thus fixing the connecting post to the adjusting rod; the first cable passes axially through the connecting post, and the fixing clamp one and the fixing clamp two securely fix the first cable to the connecting post.

[0016] The electric drive assembly drives the first cable through the second and third cables via the first and second elastic voltage regulating components. The first cable pulls the adjusting rod through the mounting assembly.

[0017] Alternatively, the transmission cable can be installed on the adjusting rod and the fixing rod in any of the following ways:

[0018] a. A first rotating shaft and a second rotating shaft are radially arranged inside the sliding bushing; a first cable passes around the first rotating shaft and the second rotating shaft, one end of the first cable passes through the adjusting rod and the side of the sliding bushing, and the other end of the first cable passes through the side of the sliding bushing;

[0019] b. A first rotating shaft is provided radially inside the sliding bushing; a first cable passes around the first rotating shaft, one end of the first cable passes through the side of the adjusting rod and the sliding bushing, and the other end of the first cable extends axially along the fixing rod to the blocking pin provided at the end of the fixing rod.

[0020] Optionally, the electric drive assembly includes a drive motor, a first blocking member, a second blocking member, and a drum; one end of the second cable and the third cable are fixedly connected to the drum; the drive motor's drive shaft is connected to the drum; the drum is driven to rotate in either the forward or reverse direction to wind the second cable and the third cable; the first blocking member and the second blocking member are both fastened to the drive motor; each of the first blocking member and the second blocking member has a cable hole; the second cable and the third cable pass through the cable holes of the first blocking member and the second blocking member respectively and are connected to the drum.

[0021] Optionally, the first cable sleeve located between the first elastic pressure regulating component, the second elastic pressure regulating component, and the sliding bushing is provided with a flexible cable sleeve; the second cable located between the first elastic pressure regulating component and the first blocking member, and the third cable located between the second elastic pressure regulating component and the second blocking member are provided with flexible cable sleeves.

[0022] Optionally, a pressure sensor can be selectively installed between any two abutting components of the sliding bushing, the flexible cable sleeve at the upper end of the first cable, the adjusting sleeve one, the pressure adjusting spring one, and the pressure adjusting pin one, as well as between any two abutting components of the connecting sleeve one, one end of the flexible cable sleeve of the second cable, and the first blocking member. The pressure sensor one is connected to a controller via a wired or wireless connection. Alternatively, a pressure sensor two can be selectively installed between any two abutting components of the sliding bushing, the flexible cable sleeve at the lower end of the first cable, the adjusting sleeve two, the pressure adjusting spring two, and the pressure adjusting pin two, as well as between any two abutting components of the connecting sleeve two, one end of the flexible cable sleeve of the third cable, and the second blocking member. The pressure sensor two is connected to a controller via a wired or wireless connection.

[0023] Optionally,

[0024] The adjusting rod and the fixing rod are connected to the fixed bone segment by a bar pin clamp and a bone pin, respectively.

[0025] (III) Beneficial Effects

[0026] The beneficial effects of this invention are:

[0027] This invention provides an intelligent bidirectional stress-adjustable external fixation bracket. Through the sequential engagement of a sliding bushing, connecting screw sleeve, fixing screw sleeve, and blocking pin, a double-locking connection is formed between the adjusting rod and the fixing rod. The adjusting rod can slide relative to the fixing rod along its axial direction, and its position is stabilized by the double-locking structure after sliding into place. A cable drive assembly connects the electric drive assembly to the adjusting rod. The cable drive path is flexible compared to the rigid connection structure, providing buffering during stress application and avoiding rigid impact on the fracture ends. A controller connects to the electric drive assembly, which can control the electric drive assembly to drive the cable drive assembly to pull the adjusting rod along its axial direction according to the fracture healing requirements, achieving bidirectional adjustment of axial tensile and compressive stress at the fracture ends. Compared to existing technologies, this invention, through the double-locking structure, flexible cable drive path, and the coordinated operation of the electric drive and controller, achieves controllable adjustment of the magnitude and direction of axial stress at the fracture ends, adapting to the different stress requirements at different stages of fracture healing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the intelligent bidirectional stress-adjusting external fixation bracket in Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the elastic pressure regulating component 1 in Embodiment 2 of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the elastic pressure regulating component two in Embodiment 3 of the present invention;

[0031] Figure 4This is a schematic diagram of the installation assembly structure of the intelligent bidirectional stress-adjusting external fixation bracket in Embodiment 1 of the present invention;

[0032] Figure 5 This is a schematic diagram of the intelligent bidirectional stress-adjusting external fixation bracket in Embodiment 1 of the present invention;

[0033] Figure 6 This is a schematic diagram of the electric drive assembly in Embodiment 1 of the present invention.

[0034] [Explanation of Labels in the Attached Image]

[0035] 1: Adjusting rod; 11: Anti-rotation pin; 12: Fixing screw one; 13: First rotating shaft; 14: Second rotating shaft; 15: Cable hole;

[0036] 2: Sliding bushing; 21: Connecting threaded sleeve; 22: Fixing set screw two;

[0037] 3: Fixing rod; 31: Fixing rod sleeve; 32: Stopping pin; 33: Stopping sleeve;

[0038] 4: Cable drive assembly; 41: First cable; 42: Second cable; 43: Third cable; 44: Fixing screw three; 45: Connecting seat; 46: Elastic pressure regulating assembly one; 461: Pressure regulating sleeve one; 462: Adjusting sleeve one; 463: Connecting sleeve one; 464: Cable fixing pin one; 465: Pressure regulating pin one; 466: Connecting seat one; 467: Cable fixing screw one; 468: Pressure regulating spring one; 469: Pressure sensor one; 47: Flexible pressure regulating component II; 471: Pressure regulating sleeve II; 472: Adjusting sleeve II; 473: Connecting sleeve II; 474: Cable fixing pin II; 475: Pressure regulating pin II; 476: Connecting seat II; 477: Cable fixing top screw II; 478: Pressure regulating spring II; 479: Pressure sensor II; 48: Flexible cable sleeve; 49: Connecting post; 491: Connecting rod; 492: Fixing clip I; 493: Fixing clip II;

[0039] 5: Electric drive assembly; 51: Drive motor; 52: First blocking element; 53: Second blocking element; 54: Drum;

[0040] 6: Controller. Detailed Implementation

[0041] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0042] Example 1:

[0043] like Figure 1 As shown in the figure, a specific embodiment of the present invention provides an intelligent bidirectional stress-adjustable external fixation bracket, including an adjusting rod 1, a sliding bushing 2, a connecting screw sleeve 21, a fixing rod 3, a fixing rod screw sleeve 31, a cable transmission assembly 4, an electric drive assembly 5, and a controller 6. One end of the fixing rod 3 is connected to the sliding bushing 2, and the sliding bushing 2 is slidably fitted onto the adjusting rod 1; the lower end of the sliding bushing 2 is fastened to the connecting screw sleeve 21, and the lower end of the connecting screw sleeve 21 is threadedly connected to the fixing rod screw sleeve 31, and the fixing rod screw sleeve 31 is fixed to the fixing rod 3 by a blocking pin 32; the electric drive assembly 5 is connected to the adjusting rod 1 through the cable transmission assembly 4, and the controller 6 is connected to the electric drive assembly 5; both the adjusting rod 1 and the fixing rod 3 are connected to the fixed bone segment; the controller 6 can drive the cable transmission assembly 4 through the electric drive assembly 5 to pull the adjusting rod 1 to slide along its axial direction, away from or closer to the fixing rod 3, so as to apply axial tensile stress or compressive stress to the fracture end.

[0044] Specifically, a double-locking connection between the adjusting rod 1 and the fixed rod 3 is formed by the sequential engagement of the sliding bushing 2, connecting screw sleeve 21, fixing rod screw sleeve 31, and blocking pin 32. The adjusting rod 1 can slide relative to the fixed rod 3 along its axial direction, and its position is stabilized by the double-locking structure after sliding into place. The electric drive assembly 5 is connected to the adjusting rod 1 through the cable transmission assembly 4. The cable transmission path is flexible compared to the rigid connection structure, which can provide buffering during stress application and avoid rigid impact on the fracture ends. The electric drive assembly 5 is connected to the controller 6. The controller 6 can control the electric drive assembly 5 to drive the cable transmission assembly 4 to pull the adjusting rod 1 to slide along its axial direction according to the needs of fracture healing, realizing bidirectional adjustment of axial tensile stress and compressive stress at the fracture ends. Compared with the prior art, it achieves controllable adjustment of the magnitude and direction of axial stress at the fracture ends through the double-locking structure, flexible cable transmission path, and coordinated cooperation of electric drive and controller, which can adapt to the different stress state requirements at different stages of fracture healing.

[0045] Furthermore, such as Figure 1 As shown, in this embodiment, the cable transmission assembly 4 includes a transmission cable, an installation assembly, a first elastic voltage regulating assembly 46, and a second elastic voltage regulating assembly 47; the transmission cable includes a first cable 41, a second cable 42, and a third cable 43.

[0046] The first cable 41 is fixed to the connecting seat 45 by the fixing screw 3 44 of the mounting component. The connecting seat 45 is a hollow threaded sleeve with threads on its outer wall, which is threaded to the inner wall of the lower end of the adjusting rod 1. The side wall of the connecting seat 45 is provided with fixing screw 3 44 for fixing the first cable 41 passing through the connecting seat 45. The two ends of the first cable 41 pass around the first rotating shaft 13 and the second rotating shaft 14 radially provided in the sliding bushing 2, respectively. The two ends of the first cable 41 pass through the cable holes 15 provided in the adjusting rod 1 and the sliding bushing 2, and are connected to the connecting seat 466 of the first elastic pressure regulating component 46 and the connecting seat 476 of the second elastic pressure regulating component 47. Under the traction of the first elastic pressure regulating component 46 and the second elastic pressure regulating component 47, the first cable 41 can move up and down.

[0047] One end of the second cable 42 and the third cable 43 are respectively connected to the connecting sleeve 463 at one end of the elastic pressure regulating component 46 and the connecting sleeve 473 at one end of the elastic pressure regulating component 47. The other ends of the second cable 42 and the third cable 43 are respectively fixed to the drum 54 of the electric drive component 5. The electric drive component 5 pulls the second cable 42 and the third cable 43 respectively. The second cable 42 and the third cable 43 give the first cable 41 a traction force to move up and down through the elastic pressure regulating component 46 and the elastic pressure regulating component 47, and thus give the adjusting rod 1 a traction force to move up and down.

[0048] Furthermore, such as Figure 1 As shown, in this embodiment, the elastic pressure regulating component 46 includes a pressure regulating sleeve 461, an adjusting sleeve 462, a connecting sleeve 463, a cable fixing pin 464, a pressure regulating pin 465, a connecting seat 466, a cable fixing top screw 467, a pressure regulating spring 468, and a pressure sensor 469.

[0049] One end of the pressure regulating sleeve 461 has a stepped inner wall, which is threaded to the adjusting sleeve 462. The other end of the pressure regulating sleeve 461 has a threaded inner wall, which is threaded to the connecting sleeve 463. One end of the second cable 42 passes through the transmission cable hole provided axially in the connecting sleeve 463. The cable fixing screw 467 is screwed in to secure the second cable 42 to the connecting sleeve 463. The pressure regulating sleeve 461 has a radially provided pressure regulating pin 465, and the side wall of the pressure regulating sleeve 461 has an axially elongated hole, in which the pressure regulating pin 465 can slide. Connector 466 is located inside pressure regulating sleeve 461 and is slidably connected to pressure regulating sleeve 461. One end of connector 466 has a radially extending hole adapted to pressure regulating pin 465, through which pressure regulating pin 465 passes. The other end of connector 466 has an axially extending hole for a transmission cable, through which the first cable 41 passes. A cable fixing pin 464 is located on the side wall of connector 466, which, when tightened, secures one end of the first cable 41 to connector 466. Pressure sensor 469 is located inside pressure regulating sleeve 461, and a pressure regulating spring 468 is located between pressure sensor 469 and connector 466. Pressure sensor 469 and pressure regulating spring 468 are slidably connected to pressure regulating sleeve 461.

[0050] Under the action of the electric drive assembly 5, the second cable 42 can provide traction force to the connecting sleeve 463 and the pressure regulating sleeve 461, and then provide traction force to the first cable 41 through the bottom step of the pressure regulating sleeve 461, the pressure sensor 469, the pressure regulating spring 468, the pressure regulating pin 465, and the connecting seat 466.

[0051] Furthermore, such as Figure 1 As shown, in this embodiment, the elastic pressure regulating component 2 47 includes a pressure regulating sleeve 2 471, an adjusting sleeve 2 472, a connecting sleeve 2 473, a cable fixing pin 2 474, a pressure regulating pin 2 475, a connecting seat 2 476, a cable fixing top screw 2 477, a pressure regulating spring 2 478, and a pressure sensor 2 479.

[0052] One end of the pressure regulating sleeve 471 has a stepped inner wall, which is threaded to the adjusting sleeve 472. The other end of the pressure regulating sleeve 471 has a threaded inner wall, which is threaded to the connecting sleeve 473. One end of the third cable 43 passes through the transmission cable hole provided axially in the connecting sleeve 473. The cable fixing screw 477 is screwed in to secure the third cable 43 to the connecting sleeve 473. The pressure regulating sleeve 471 has a radially provided pressure regulating pin 475. The side wall of the pressure regulating sleeve 471 has an axially elongated hole, in which the pressure regulating pin 475 can slide. Connecting seat 2 476 is located inside pressure regulating sleeve 2 471 and is slidably connected to pressure regulating sleeve 2 471. One end of connecting seat 2 476 has a radially provided elongated hole adapted to pressure regulating pin 2 475, and pressure regulating pin 2 475 passes through the radially provided elongated hole of connecting seat 2 476. The other end of connecting seat 2 476 has an axially provided transmission cable hole, through which the first cable 41 passes. A cable fixing pin 2 474 is provided on the side wall of connecting seat 2 476. Tightening the cable fixing pin 2 474 can securely fix one end of the first cable 41 to connecting seat 2 476. Pressure sensor 2 479 is located inside pressure regulating sleeve 2 471. Pressure regulating spring 2 478 is provided between pressure sensor 2 479 and connecting seat 2 476. Pressure sensor 2 479 and pressure regulating spring 2 478 are slidably connected to pressure regulating sleeve 2 471.

[0053] The third cable 43 can provide traction force to the connecting sleeve 473 and the pressure regulating sleeve 471 under the action of the electric drive component 5, and then provide traction force to the other end of the first cable 41 through the bottom step of the pressure regulating sleeve 471, the pressure sensor 479, the pressure regulating spring 478, the pressure regulating pin 475, and the connecting seat 476.

[0054] Furthermore, such as Figure 1 As shown, in this embodiment, the mounting assembly includes a connecting seat 45 and a fixing screw 44. The connecting seat 45 is a hollow threaded sleeve with threads on its outer wall, which is threaded to the inner wall of the lower end of the adjusting rod 1. The fixing screw 44 is located on its side wall and is used to fix the first cable 41 that passes through the connecting seat 45. The electric drive assembly 5 drives the first cable 41 via the second cable 42 and the third cable 43 through the elastic pressure regulating assembly 46 and the elastic pressure regulating assembly 47. The first cable 41 pulls the adjusting rod 1 through the mounting assembly.

[0055] Furthermore, such as Figure 1 As shown, in this embodiment, a first rotating shaft 13 and a second rotating shaft 14 are radially arranged inside the sliding bushing 2; a first cable 41 passes around the first rotating shaft 13 and the second rotating shaft 14, one end of the first cable 41 passes through the side of the adjusting rod 1 and the sliding bushing 2, and the other end of the first cable 41 passes through the side of the sliding bushing 2.

[0056] Furthermore, such as Figure 1As shown, in this embodiment, the electric drive assembly 5 includes a drive motor 51, a first blocking member 52, a second blocking member 53, and a drum 54. One end of the second cable 42 and the third cable 43 are both fixedly connected to the drum 54; the drive shaft of the drive motor 51 is connected to the drum 54 to drive the drum 54 to rotate in either the forward or reverse direction to wind the second cable 42 and the third cable 43. The first blocking member 52 and the second blocking member 53 are both fastened to the drive motor 51. Each of the first blocking member 52 and the second blocking member 53 has a cable hole, through which the second cable 42 and the third cable 43 pass and are connected to the drum 54.

[0057] Furthermore, such as Figure 1 As shown, in this embodiment, the first cable 41 located between the first elastic pressure regulating component 46, the second elastic pressure regulating component 47 and the sliding bushing 2 is covered with a flexible cable sleeve 48; the second cable 42 located between the first elastic pressure regulating component 46 and the first blocking member 52 and the third cable 43 located between the second elastic pressure regulating component 47 and the second blocking member 53 are covered with flexible cable sleeves 48.

[0058] Furthermore, such as Figure 1 As shown, in this embodiment, a pressure sensor 469 may be selectively installed between any two abutting components of the sliding bushing 2, the flexible cable sleeve 48 at the upper end of the first cable 41, the adjusting sleeve 462, the pressure adjusting spring 468, and the pressure adjusting pin 465, as well as between any two abutting components of the connecting sleeve 463, one end of the flexible cable sleeve 48 fitted on the second cable 42, and the first blocking member 52. The pressure sensor 469 is connected to the controller 6 via a wired or wireless connection. Similarly, a pressure sensor 479 may be selectively installed between any two abutting components of the sliding bushing 2, the flexible cable sleeve 48 at the lower end of the first cable 41, the adjusting sleeve 472, the pressure adjusting spring 478, and the pressure adjusting pin 475, as well as between any two abutting components of the connecting sleeve 473, one end of the flexible cable sleeve 48 fitted on the third cable 43, and the second blocking member 53. The pressure sensor 479 is connected to the controller 6 via a wired or wireless connection.

[0059] Furthermore, such as Figure 1 As shown, in this embodiment, the adjusting rod 1 and the fixing rod 3 are connected to the fixed bone segment by a bar needle clamp and a bone needle, respectively.

[0060] The steps for using the intelligent bidirectional stress-adjustable external fixation bracket provided in this embodiment include:

[0061] S1. Based on the pathological condition of the patient's fracture, select appropriate specifications for the adjusting rod 1 and fixing rod 3; pre-assemble the components on the sterile table—fit the sliding bushing 2 onto the adjusting rod 1 and secure it with the connecting screw sleeve 21 and the fixing screw sleeve 31; pass the first cable 41 around the first rotating shaft 13 and the second rotating shaft 14 of the sliding bushing 2 and connect it to the connecting seat 45, the first elastic pressure adjusting component 46 and the second elastic pressure adjusting component 47; connect the second cable 42 and the third cable 43 to the elastic pressure adjusting component 46 and the second elastic pressure adjusting component 47 and the reel 54 respectively; secure the first blocking member 52 and the second blocking member 53 to the drive motor 51; fit the flexible cable sleeve 48 onto the corresponding sections of the first cable 41, the second cable 42 and the third cable 43; connect the controller 6 and calibrate the traction force threshold; finally, sterilize the pre-assembled frame and bone pins for later use.

[0062] S2. Connect the pre-installed fixing rod 3 to the fixed bone segment through its bone pins, and connect the adjusting rod 1 to the traction bone segment through its bone pins. The bone pin implantation positions are parallel to the bone pins of the fixed bone segment. Fine-tune the sliding bushing 2 to ensure that the frame as a whole is consistent with the long axis of the bone segment.

[0063] S3. Input parameters on controller 6 according to the treatment plan; start controller 6, electric drive component 5 drives drum 54 to rotate in the forward or reverse direction, and pulls first cable 41 through second cable 42 and third cable 43 via elastic pressure adjustment component 1 46 and elastic pressure adjustment component 2 47, and adjust rod 1 slides away from or towards fixed rod 3 along its axis; during adjustment, controller 6 receives data from pressure sensor 1 469 and pressure sensor 2 479 in real time, and adjusts drive speed according to monitoring data; confirm bone segment alignment through imaging equipment.

[0064] S4. Use controller 6 to fine-tune the procedure daily and observe the patient's limb response; regularly check the integrity of the cables and flexible cable sleeves; once the bone tissue has healed to the target level, gradually reduce the traction force through controller 6, and finally remove the frame.

[0065] Example 2

[0066] This embodiment provides an intelligent bidirectional stress-adjustable external fixation bracket, which differs from the bidirectional adjustable external fixation bracket described in Embodiment 1 in that, as Figure 2 As shown, in this embodiment, the installation assembly includes a connecting post 49, a connecting rod 491, a first fixing clamp 492, and a second fixing clamp 493. The connecting rod 491 is radially disposed at the lower end of the adjusting rod 1, and the connecting post 49 is disposed inside the lower end of the adjusting rod 1 with a radially elongated hole. The connecting rod 491 passes through the radially elongated hole at the lower end of the adjusting rod 1, thereby fixing the connecting post 49 to the adjusting rod 1. The first cable 41 is axially disposed through the connecting post 49, and the first fixing clamp 492 and the second fixing clamp 493 fasten and fix the first cable 41 to the connecting post 49.

[0067] Example 3

[0068] This embodiment provides an intelligent bidirectional stress-adjustable external fixation bracket, which differs from the bidirectional adjustable external fixation bracket described in Embodiment 1 in that, as Figure 3 As shown, in this embodiment, the transmission cable is arranged in the adjusting rod 1 and the fixing rod 3 as follows: a first rotating shaft 13 is radially arranged inside the sliding bushing 2; the first cable 41 passes around the first rotating shaft 13, one end of the first cable 41 passes through the side of the adjusting rod 1 and the sliding bushing 2, and the other end of the first cable 41 extends along the axial direction of the fixing rod 3 to the blocking pin 32 provided at the end of the fixing rod 3 and passes through.

[0069] Example 4

[0070] This embodiment provides an intelligent bidirectional stress-adjustable external fixing bracket. The difference between this embodiment and the bidirectional adjustable external fixing bracket described in Embodiment 1 is that the installation components of this embodiment adopt the scheme of Embodiment 2, and the transmission cable is set in the adjusting rod 1 and the fixing rod 3 in the manner of Embodiment 3.

[0071] Example 5

[0072] This embodiment provides an intelligent bidirectional stress-adjustable external fixation bracket, which differs from the bidirectional adjustable external fixation bracket described in Embodiment 1 in that pressure sensor 469 and pressure sensor 479 are not provided in this embodiment.

[0073] Example 6

[0074] This embodiment provides an intelligent bidirectional stress-adjustable external fixation bracket, which differs from the bidirectional adjustable external fixation bracket described in Embodiment 1 in that the adjusting rod 1 and the fixing rod 3 in this embodiment are connected to the fixed bone segment by rod pin clamps and bone pins, respectively.

[0075] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0076] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0077] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0078] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intelligent bidirectional stress-adjustable external fixation bracket, characterized in that, include: Adjusting rod (1), sliding bushing (2), connecting threaded sleeve (21), fixing rod (3), fixing threaded sleeve (31), cable transmission assembly (4), electric drive assembly (5) and controller (6); One end of the fixed rod (3) is connected to the sliding bushing (2), the sliding bushing (2) is slidably sleeved on the adjusting rod (1), the lower end of the sliding bushing (2) is fastened to the connecting threaded sleeve (21); the lower end of the connecting threaded sleeve (21) is threaded to the fixed rod threaded sleeve (31), the fixed rod threaded sleeve (31) is fixed to the fixed rod (3) by the blocking pin (32), the electric drive assembly (5) is connected to the adjusting rod (1) through the cable transmission assembly (4), and the controller (6) is connected to the electric drive assembly (5); Both the adjusting rod (1) and the fixing rod (3) are connected to the fixed bone segment; The controller (6) is able to drive the cable drive assembly (4) via the electric drive assembly (5) to pull the adjusting rod (1) to slide along its axial direction away from or towards the fixed rod (3) to apply axial tensile or compressive stress to the fracture ends.

2. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 1, characterized in that, The cable drive assembly (4) includes a drive cable, a mounting assembly, a first flexible voltage regulating assembly (46), and a second flexible voltage regulating assembly (47). The transmission cable includes a first cable (41), a second cable (42), and a third cable (43); the first cable (41) is fixed to the connecting seat (45) by the fixing screw three (44) of the mounting component. The connecting seat (45) is a hollow screw sleeve with threads on the outer wall, which is threaded to the inner wall of the lower end of the adjusting rod (1). The side wall is provided with fixing screw three (44) for fixing the first cable (41) passing through the connecting seat (45). The two ends of the first cable (41) pass around the first rotating shaft (13) and the second rotating shaft (14) radially provided by the sliding bushing (2), respectively. The two ends of the first cable (41) pass through the cable hole (15) provided by the adjusting rod (1) and the sliding bushing (2) and are connected to the connecting seat one (466) of the first elastic pressure regulating component (46) and the connecting seat two (476) of the second elastic pressure regulating component (47). Under the traction of the first elastic pressure regulating component (46) and the second elastic pressure regulating component (47), the first cable (41) can move up and down; one end of the second cable (42) and the third cable (43) are respectively connected to the first connecting sleeve (463) at one end of the first elastic pressure regulating component (46) and the second connecting sleeve (473) at one end of the second elastic pressure regulating component (47), and the other end of the second cable (42) and the third cable (43) are respectively fixed to the drum (54) of the electric drive component (5). The electric drive component (5) pulls the second cable (42) and the third cable (43) respectively. The second cable (42) and the third cable (43) respectively give the first cable (41) traction force to move up and down through the first elastic pressure regulating component (46) and the second elastic pressure regulating component (47), and then give the adjusting rod (1) traction force to move up and down.

3. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 2, characterized in that, The first elastic pressure regulating component (46) includes a first pressure regulating sleeve (461), a first adjusting sleeve (462), a first connecting sleeve (463), a first cable fixing pin (464), a first pressure regulating pin (465), a first connecting seat (466), a first cable fixing screw (467), a first pressure regulating spring (468), and a first pressure sensor (469). One end of the pressure regulating sleeve (461) has a step on its inner wall, which is threaded to the adjusting sleeve (462). The other end of the pressure regulating sleeve (461) has a thread on its inner wall, which is threaded to the connecting sleeve (463). One end of the second cable (42) passes through the transmission cable hole provided axially in the connecting sleeve (463). The cable fixing screw (467) is screwed in to secure the second cable (42) to the connecting sleeve (463). The pressure regulating sleeve (461) has a pressure regulating pin (465) radially provided. The side wall of the pressure regulating sleeve (461) has an axial long hole. The pressure regulating pin (465) is slidably passed through the axial long hole. The connecting seat (466) is located inside the pressure regulating sleeve (461) and is slidably connected to the pressure regulating sleeve (461). The end of the connector is provided with a long hole that is compatible with the pressure adjusting pin (465). The pressure adjusting pin (465) passes through the long hole in the radial direction of the connector (466). The other end of the connector (466) is provided with a transmission cable hole in the axial direction. The first cable (41) passes through the transmission cable hole. The side wall of the connector (466) is provided with a cable fixing pin (464). Tightening the cable fixing pin (464) can fix one end of the first cable (41) to the connector (466). The pressure sensor (469) is located inside the pressure adjusting sleeve (461). The pressure adjusting spring (468) is provided between the pressure sensor (469) and the connector (466). The pressure sensor (469) and the pressure adjusting spring (468) are slidably connected to the pressure adjusting sleeve (461). The second cable (42) can provide traction force to the connecting sleeve (463) and the pressure regulating sleeve (461) under the action of the electric drive assembly (5), and then provide traction force to the first cable (41) through the bottom step of the pressure regulating sleeve (461), the pressure sensor (469), the pressure regulating spring (468), the pressure regulating pin (465), and the connecting seat (466).

4. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 3, characterized in that, The second elastic pressure regulating component (47) comprises a second pressure regulating sleeve (471), a second adjusting sleeve (472), a second connecting sleeve (473), a second cable fixing pin (474), a second pressure regulating pin (475), a second connecting seat (476), a second cable fixing top screw (477), a second pressure regulating spring (478), and a second pressure sensor (479); One end of the pressure regulating sleeve 2 (471) has a step on its inner wall, which is threaded to the adjusting sleeve 2 (472). The other end of the pressure regulating sleeve 2 (471) has a thread on its inner wall, which is threaded to the connecting sleeve 2 (473). One end of the third cable (43) passes through the transmission cable hole provided axially in the connecting sleeve 2 (473). The cable fixing screw 2 (477) is screwed in to secure the third cable (43) to the connecting sleeve 2 (473). The pressure regulating sleeve 2 (471) has a pressure regulating pin 2 (475) radially. The side wall of the pressure regulating sleeve 2 (471) has an axial long hole. The pressure regulating pin 2 (475) is slidably passed through the axial long hole. The connecting seat 2 (476) is located inside the pressure regulating sleeve 2 (471) and is slidably connected to the pressure regulating sleeve 2 (471). One end of the connecting seat 2 (476) A radially fitted elongated hole is provided to match the second pressure adjusting pin (475). The second pressure adjusting pin (475) passes through the radially fitted hole of the second connecting seat (476). The other end of the second connecting seat (476) is provided with an axially fitted cable hole. The first cable (41) can pass through the cable hole. The side wall of the second connecting seat (476) is provided with a second cable fixing pin (474). Tightening the second cable fixing pin (474) can fasten one end of the first cable (41) to the second connecting seat (476). The second pressure sensor (479) is located inside the second pressure adjusting sleeve (471). The second pressure adjusting spring (478) is provided between the second pressure sensor (479) and the second connecting seat (476). The second pressure sensor (479) and the second pressure adjusting spring (478) are slidably connected to the second pressure adjusting sleeve (471). The third cable (43) can provide traction force to the connecting sleeve (473) and the pressure regulating sleeve (471) under the action of the electric drive assembly (5), and then provide traction force to the other end of the first cable (41) through the bottom step of the pressure regulating sleeve (471), the pressure sensor (479), the pressure regulating spring (478), the pressure regulating pin (475), and the connecting seat (476).

5. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 2, characterized in that, The mounting component structure can be any of the following: a. The installation components include a connector (45) and a fixing screw three (44). The connector (45) is a hollow screw sleeve with threads on its outer wall, which is threaded to the inner wall of the lower end of the adjusting rod (1). Its side wall is provided with a fixing screw three (44) for fixing the first cable (41) that passes through the connector (45). b. The installation components include a connecting post (49), a connecting rod (491), a fixing clamp one (492), and a fixing clamp two (493); the connecting rod (491) is radially disposed at the lower end of the adjusting rod (1), the connecting post (49) is disposed inside the lower end of the adjusting rod (1), and has a radially elongated hole. The connecting rod (491) passes through the radially elongated hole at the lower end of the adjusting rod (1) to fix the connecting post (49) to the adjusting rod (1); the first cable (41) passes axially through the connecting post (49), and the fixing clamp one (492) and the fixing clamp two (493) fasten the first cable (41) to the connecting post (49); The electric drive assembly (5) drives the first cable (41) through the second cable (42) and the third cable (43) via the first elastic voltage regulating assembly (46) and the second elastic voltage regulating assembly (47). The first cable (41) pulls the adjusting rod (1) through the mounting assembly.

6. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 2, characterized in that, The transmission cable is installed on the adjusting rod (1) and the fixing rod (3) in any of the following ways: a. A first rotating shaft (13) and a second rotating shaft (14) are provided radially inside the sliding bushing (2); a first cable (41) passes around the first rotating shaft (13) and the second rotating shaft (14), one end of the first cable (41) passes through the side of the adjusting rod (1) and the sliding bushing (2), and the other end of the first cable (41) passes through the side of the sliding bushing (2); b. A first rotating shaft (13) is provided in the inner radial direction of the sliding bushing (2); a first cable (41) passes around the first rotating shaft (13), one end of the first cable (41) passes through the side of the adjusting rod (1) and the sliding bushing (2), and the other end of the first cable (41) extends along the axial direction of the fixing rod (3) to the blocking pin provided at the end of the fixing rod (3) and passes through.

7. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 4, characterized in that, The electric drive assembly (5) includes a drive motor (51), a first stop (52), a second stop (53), and a drum (54); One end of the second cable (42) and the third cable (43) are fixedly connected to the drum (54); the drive shaft of the drive motor (51) is connected to the drum (54); the drive drum (54) is rotated in the forward or reverse direction to wind the second cable (42) and the third cable (43). The first blocking member (52) and the second blocking member (53) are both fixedly fastened to the drive motor (51). The first blocking member (52) and the second blocking member (53) are each provided with cable holes. The second cable (42) and the third cable (43) are respectively passed through the cable holes of the first blocking member (52) and the second blocking member (53) and connected to the drum (54).

8. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 7, characterized in that, The first cable (41) located between the first elastic pressure regulating component (46), the second elastic pressure regulating component (47) and the sliding bushing (2) is covered with a flexible cable sleeve (48); the second cable (42) located between the first elastic pressure regulating component (46) and the first blocking component (52) and the third cable (43) located between the second elastic pressure regulating component (47) and the second blocking component (53) are covered with flexible cable sleeves (48).

9. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 8, characterized in that, Pressure sensor 1 (469) may be selectively installed between any two abutting parts of the sliding bushing (2), the flexible cable sleeve (48) provided at the upper end of the first cable (41), the adjusting sleeve 1 (462), the pressure adjusting spring 1 (468), the pressure adjusting pin 1 (465), the connecting sleeve 1 (463), one end of the flexible cable sleeve (48) fitted on the second cable (42), and any two abutting parts of the first blocking member (52). Pressure sensor 1 (469) is connected to controller (6) via wired or wireless connection. Pressure sensor 2 (479) may be optionally provided between any two abutting parts of sliding bushing (2), flexible cable sleeve (48) provided at the lower end of the first cable (41), adjusting sleeve 2 (472), pressure adjusting spring 2 (478), pressure adjusting pin 2 (475), connecting sleeve 2 (473), one end of flexible cable sleeve (48) provided on the third cable (43), and between any two abutting parts of the second blocking member (53). Pressure sensor 2 (479) is connected to controller (6) via wired or wireless connection.

10. The intelligent bidirectional stress-adjustable external fixation bracket as described in claim 1, characterized in that, The adjusting rod (1) and the fixing rod (3) are connected to fix the bone segment by a bar needle clamp and a bone needle, respectively.

Images