Extraskeletal fixing support suitable for old people

Abstract

The embodiment of the invention provides an external skeletal fixation support suitable for an old person. The external skeletal fixation support comprises a first base, a second base and a third base, a second base; the movable assembly is arranged between the first base and the second base, and the movable assembly comprises a fixed block body, a fixed block body and a movable block body; the motor is provided with a screw rod, and the motor is fixedly connected with the fixed block body by arranging a guide column; the movable block body is provided with an internal thread, and the movable block body is connected to the screw rod through the internal thread; the movable block body is sleeved on the guide post; a first joint; and a second joint; wherein the fixed block body and the movable block body can contain kirschner wires respectively, the motor acts on the screw rod, and the distance between the movable block body and the motor is adjustable through the screw rod. The technical effect that the external bone fixing support has more adjusting postures is achieved.

Description

Technical Field

[0001] The invention relates to a bone external fixation bracket adapted for the elderly. Background Art

[0002] As the population ages, the incidence of fractures in the elderly is increasing year by year. As the elderly generally have osteoporosis, muscle atrophy, decreased healing ability and other problems, traditional fracture fixation equipment and methods often cannot meet their special needs, which is mainly reflected in the following aspects: 1. Osteoporosis: The bone strength of the elderly decreases, and traditional fixation devices such as steel plates and screws are prone to cause secondary injuries, such as loose screws and broken steel plates.

[0003] 2. Muscle atrophy: The muscles of the elderly are weakened, making it difficult for them to effectively support the fixation equipment, which can easily lead to fixation failure, such as loosening of the external fixator and unstable plaster fixation.

[0004] 3. Decreased healing ability: Fractures in the elderly heal slowly and require longer periods of immobilization, which in turn can lead to complications such as joint stiffness and muscle atrophy.

[0005] 4. High risk of complications: The elderly often have multiple underlying diseases, such as diabetes, cardiovascular disease, etc. These diseases will increase the risk of surgery and the incidence of postoperative complications.

[0006] 5. Decreased self-care ability: Elderly people have difficulty in moving around, and traditional fixed equipment is often bulky and inconvenient to wear, affecting their daily lives.

[0007] Specifically, current bone external fixators are generally composed of two bases and multiple rods, which are fixed between two parallel bases. The rotating joints on the rods are used to correspond to the fracture from multiple angles, so that multiple groups of rods cooperate with Kirschner wires to achieve the purpose of fixing the fracture.

[0008] However, due to the different causes of fractures in patients, the fracture locations and crack directions are diverse. The rod body in the existing external bone fixator is a fixed form, resulting in a low degree of freedom of movement of the external bone fixator, and the fixing position of the Kirschner wire cannot be adjusted at will, resulting in the existing external bone fixator having a relatively simple fixation posture for the bone.

[0009] In addition, due to long-term incorrect walking methods, the elderly suffer from varying degrees of lower limb force line misalignment in old age, which specifically refers to the deviation of the normal anatomical relationship between the bones of the lower limbs.

[0010] Therefore, the technical problem of the prior art is that the fixation posture of the external bone fixator is relatively single and there are adaptation obstacles. Summary of the invention

[0011] The embodiment of the present application provides an external bone fixator suitable for the elderly, which solves the technical problem that the external bone fixator in the prior art has a relatively single fixing posture; and achieves the technical effect that the external bone fixator has more adjustable postures.

[0012] The embodiment of the present application provides an external bone fixator adapted to the elderly, the external bone fixator comprising: a first base; a second base, the second base and the first base are arranged at an interval; and a movable component, the movable component is arranged between the first base and the second base, and the movable component comprises: a fixed block; a motor, a screw is arranged on the output end of the motor, the motor is fixedly connected to the fixed block by setting a guide column, and the guide column and the screw are arranged in parallel; a movable block, a through internal thread is arranged on the movable block, and the movable block is connected to the screw through the internal thread; the movable block is also provided with a guide column hole, and the movable block is sleeved on the guide column through the guide column hole; a first joint, the two ends of the first joint are connected to the movable block and the second base; and a second joint, the two ends of the second joint are connected to the motor and the first base; wherein the fixed block and the movable block can respectively accommodate Kirschner wires, the motor acts on the screw, and the distance between the movable block and the motor is adjustable through the screw.

[0013] Preferably, the first joint and the second joint are both universal joints.

[0014] Preferably, the first base is provided with a first movable groove relative to the second joint, and the position of the second joint on the first base can be adjusted through the first movable groove.

[0015] Preferably, the second base is provided with a second movable groove relative to the first joint, and the position of the first joint on the second base can be adjusted through the second movable groove.

[0016] Preferably, the movable block is arranged between the motor and the fixed block, and a connecting rod is arranged between the movable block and the first joint, so that the first joint is arranged outside the fixed block through the connecting rod.

[0017] Preferably, the fixing block is provided with a connecting hole relative to the connecting rod, and the fixing block is sleeved on the connecting rod through the connecting hole.

[0018] Preferably, the movable components are provided in plurality, and the plurality of movable components are equally divided around the circumference.

[0019] Preferably, the fixed block and the movable block accommodate Kirschner wires by respectively providing a first accommodating cavity and a second accommodating cavity, the first accommodating cavity and the second accommodating cavity are through cavities penetrating at both ends, and the first accommodating cavity and the second accommodating cavity are in a posture of penetrating from the outside to the inside when viewed as a whole on the external bone fixator.

[0020] Preferably, one end of the screw is connected to the motor, and the other end of the screw is fixed to a fixed block; wherein the fixed block is provided with a bearing to allow the screw to rotate freely.

[0021] Preferably, the fixed block and / or the movable block are provided with a first and a second delivery cavity, the first and the second delivery cavity have at least two openings, and the external catheter can act on the fixed block and / or the movable block through the delivery cavity.

[0022] Preferably, the first and second delivery cavities are the first and second accommodating cavities. The first and second delivery cavities with different diameters and directions (perpendicular to the surface of the block and passing through the four sides of the block) are respectively arranged on the fixed block and the movable block to accommodate and fix the Kirschner wire.

[0023] The above one or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects: In the embodiment of the present application, the device is suitable for fixing simple fractures of long bones of the limbs, or comminuted fractures that are easily caused by osteoporosis. The external fixator includes six movable components, and the total length of the movable components can be adjusted through screws to adjust the position of the Kirschner wire; the total length is matched with the first joint and the second joint so that the position of the entire movable component relative to the axis can be tilted to obtain more Kirschner wire fixation postures, and then the Kirschner wire is used to fix the bone to achieve the purpose of fixing the fracture; the technical problem of the relatively single fixing posture of the external fixator in the prior art is solved; the technical effect of the external fixator having more adjustable postures is achieved.

[0024] In the embodiment of the present application, by designing the first joint and the second joint as universal joints, the movable component can have a variety of tilting postures relative to the first base and the second base; at the same time, by arranging the circumference of multiple movable components in equal parts, the device can coordinate the force between the multiple movable components so that the posture of the device can be stably maintained.

[0025] In the embodiment of the present application, a first movable groove and a second movable groove are provided on the first base and the second base, and the movable assembly is fixed at a position relative to the first base and the second base, so that the device can be adjusted to increase its postures, so that when facing specific fracture cases, doctors can design external fixation plans more specifically and reduce the limitations of the external fixation bracket on the surgical plan. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the axial lateral structure of the bone external fixator adapted for the elderly in the embodiment of the present application; Figure 2 This is a schematic diagram of the main view of the structure of the external fixator adapted for the elderly in the embodiment of the present application; Figure 3 This is a schematic diagram of the main view of the movable component on the first base in the embodiment of the present application; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 for Figure 3 The enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the main view of the active component in the embodiment of the present application; Figure 7 It is a side view schematic diagram of the movable component in the embodiment of the present application; Figure 8 A schematic diagram of a partial cross-sectional view of a side view of the active component in an embodiment of the present application; Fig. 9 It is a schematic diagram of the axial lateral structure of the bone fixation bracket in the embodiment of the present application; Fig.10 for Fig. 9 Enlarged view of point C in the middle; Fig.11 for Fig. 9 The enlarged view of point D in the middle; Fig.12 This is a schematic diagram of the axial lateral structure of the catheter connected to the movable component in an embodiment of the present application.

[0027] Figure numerals: 1. first base; 11. first movable groove; 2. second base; 22. second movable groove; 3. movable assembly; 31. motor; 32. fixed block; 321. first accommodating chamber; 322. bearing; 323. first conveying chamber; 33. guide column; 34. screw; 35. movable block; 351. second accommodating chamber; 352. internal thread; 353. second conveying chamber; 36. connecting rod; 37. first joint; 371. fixed part; 372. movable part; 38. second joint; 4. Kirschner wire; 5. catheter. DETAILED DESCRIPTION

[0028] The embodiment of the present application provides an external bone fixator adapted to the elderly, and the device is suitable for fixing simple fractures of long bones of the limbs, or comminuted fractures that are easily caused by osteoporosis. These types of fractures are common fractures in the elderly. In addition, due to long-term incorrect walking methods, the elderly suffer from different degrees of upper or lower limb force line misalignment in old age, specifically referring to the deviation of the normal anatomical relationship between the bones of the lower limbs.

[0029] The bone external fixator includes six movable components 3, and the total length of the movable components 3 can be adjusted through the screw 34 to adjust the position of the Kirschner wire 4; the total length is matched with the first joint 37 and the second joint 38 so that the position of the entire movable component 3 relative to the central axis of the virtual cylinder composed of the first base 1 and the second base 2 can be tilted to obtain more Kirschner wire 4 fixation postures, thereby adapting to the problem of the abnormal force line of the lower limbs of the elderly and the deviation of the normal anatomical relationship between the bones of the lower limbs. Afterwards, the bones are fixed with the Kirschner wire 4 to achieve the purpose of fixing the fracture; the technical problem that the fixed posture of the bone external fixator in the prior art is relatively single is solved; and the technical effect that the bone external fixator has more adjustable postures is achieved.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Example

[0031] Elderly people are suitable for bone external fixation brackets. Please refer to the instructions attached. Figure 1-3 The external bone fixator includes: a first base 1, a second base 2 and a movable component 3; wherein the movable component 3 can make various postures relative to the first base 1 and the second base 2, and a plurality of Kirschner wires 4 can be fixed on the movable component 3, so that the Kirschner wires 4 can be inserted into the bone at different angles, making the external bone fixation more targeted.

[0032] First base 1, refer to the instruction manual Figure 1 The first base 1 is annular, and is provided with a first movable groove 11 relative to the second joint 38. A plurality of first movable grooves 11 are equally divided on the circumference, and the position of the second joint 38 on the first base 1 can be adjusted through the first movable grooves 11.

[0033] Second base 2, refer to the instruction manual Figure 1 The second base 2 and the first base 1 are spaced apart, and the second base 2 is annular. Preferably, the second base 2 and the first base 1 have the same style, so that the number of parts of the device is reduced. The second base 2 is provided with a second movable groove 22 relative to the first joint 37, and the position of the first joint 37 on the second base 2 can be adjusted through the second movable groove 22.

[0034] Active component 3, refer to the instruction manual Figure 6-8 , used to fix the Kirschner wire 4 and provide various fixed positions for the Kirschner wire 4. There are multiple movable components 3, and the multiple movable components 3 are equally divided between the first base 1 and the second base 2, and the movable component 3 includes: a fixed block 32, a motor 31, a movable block 35, a first joint 37 and a second joint 38. Among them, the fixed block 32 and the movable block 35 can respectively accommodate the Kirschner wire 4, the motor 31 acts on the screw 34, and the screw 34 makes the distance between the movable block 35 and the motor 31 adjustable.

[0035] The fixed block 32 is provided with two first accommodating cavities 321 to accommodate the Kirschner wire 4. The first accommodating cavity 321 is a through cavity with two ends passing through, and the first accommodating cavity 321 is in a posture of passing through from the outside to the inside in the overall view of the external bone fixation bracket. The fixed block 32 is provided with a connecting hole relative to the connecting rod 36, and the fixed block 32 is sleeved on the connecting rod 36 through the connecting hole, so that the movement trajectory of the connecting rod 36 and the movable block 35 is more stable.

[0036] The motor 31 has a screw 34 at its output end, the motor 31 is fixedly connected to the fixed block 32 by means of a guide post 33, and the other end of the screw 34 is fixed to the fixed block 32; wherein the fixed block 32 is provided with a bearing 322 so that the screw 34 can rotate freely. The guide post 33 and the screw 34 are arranged in parallel.

[0037] The movable block 35 is arranged between the motor 31 and the fixed block 32. The movable block 35 is provided with a through internal thread 352, and the movable block 35 is connected to the screw rod 34 through the internal thread 352; the movable block 35 is also provided with a guide post 33 hole, and the movable block 35 is sleeved on the guide post 33 through the guide post 33 hole; and a connecting rod 36 is arranged between the movable block 35 and the first joint 37, and the first joint 37 is arranged on the outside of the fixed block 32 through the connecting rod 36. Specifically, the movable block 35 accommodates the Kirschner wire 4 by setting two second accommodating chambers 351, and the second accommodating chamber 351 is a through chamber with two ends passing through, and the second accommodating chamber 351 is viewed as a through posture from the outside to the inside on the whole of the bone external fixation bracket. Among them, the arrangement order between the multiple first accommodating chambers 321 is consistent with the arrangement order between the multiple second accommodating chambers 351.

[0038] First connector 37, refer to the instruction manual Figure 4 The first joint 37 is connected to the movable block 35 and the second base 2 at both ends. The first joint 37 is specifically a ball joint, which is divided into a fixed part 371 and a movable part 372. Preferably, the fixed part 371 is connected to the connecting rod 36, and the movable part 372 is connected to the second base 2 by a screw rod 34 and a nut.

[0039] The second connector 38, see the attached manual Figure 5 , providing the device with a degree of freedom of movement. The two ends of the second joint 38 connect the motor 31 and the first base 1; the second joint 38 is specifically a universal shaft joint, and the universal shaft joint and the first base 1 are connected by a screw 34 and a nut. Preferably, the first joint 37 and the second joint 38 can be set to be lockable, so as to facilitate the adjustment of the posture of the device. Example

[0040] Further optimization is made based on the first embodiment. Figure 9-12 , specifically: The delivery cavity has a flow capacity, and the delivery cavity is divided into a first delivery cavity 323 and a second delivery cavity 353. The delivery cavity is viewed as penetrating from the outside to the inside on the whole of the external bone fixator. The first delivery cavity 323 and the second delivery cavity 353 are respectively arranged on the fixed block 32 and the movable block 35, and the first delivery cavity 323 is independently arranged on the fixed block 32, so that the first delivery cavity 323 is suitable for conveying fluid, extracting fluid or conveying gas. The first delivery cavity 323 has at least two openings on the fixed block 32, so that the first delivery cavity 323 can receive and transport fluid substances, such as conveying disinfectant around the surgical wound, or using the first delivery cavity 323 as a channel for gas circulation, such as suctioning pus. Similarly, the second delivery cavity 353 is independently arranged on the movable block 35, and the second delivery cavity 353 has at least two openings, so that the second delivery cavity 353 can receive and transport fluid substances.

[0041] Among them, the first delivery cavity 323 and the second delivery cavity 353 are respectively provided with a plurality of them, and they can be set to specifications of different cavity diameters. The catheter 5 and the first delivery cavity 323 or the second delivery cavity 353 are conveniently connected, and the position of the catheter 5 is effectively fixed through the first delivery cavity 323 or the second delivery cavity 353, so that the care of the incision after the operation is convenient, and the traditional bone external fixation bracket is prevented from affecting the placement of the catheter 5.

[0042] Preferably, the port of the delivery cavity is a threaded interface or a plug-in interface, which facilitates the rapid connection between the catheter 5 and the delivery cavity. Example

[0043] The first delivery cavity 323 and the second delivery cavity 353 are the first accommodating cavity 321 and the second accommodating cavity 351. The first delivery cavity 323 and the second delivery cavity 353 with different diameters and directions (through the four sides of the block) are respectively arranged on the fixed block 32 and the movable block 35 to accommodate and fix the Kirschner wire 4.

[0044] Working principle: The screw rod 34 is driven by the motor 31, and the screw rod 34 drives the movable block 35 to move linearly, and the movable block 35 drives the connecting rod 36 to push the position of the first joint 37, so that the movable component 3 moves relative to the first base 1 and the second base 2. According to the direction of the bones of the patient's upper limbs or lower limbs, the length and direction of the movable component 3 are adjusted so that the movable component 3 can be tilted relative to the central axis position (the virtual cylinder composed of the first base 1 and the second base 2). The additional fixed block 32 moves on the movable component 3, so that the surface of the fixed block 32 facing the central axis (the virtual cylinder composed of the first base 1 and the second base 2) can slide to any position along the surface of the virtual cylinder composed of the first base 1 and the second base 2. Therefore, the Kirschner wire 4 can face the bones at any position at any angle under the above adjustment.

[0045] Then the product is put on the fractured limb, and after a slight adjustment, the Kirschner wire 4 is gradually passed through the movable block 35 and the movable block 35 is fixed on the bone to complete the fixation of the fracture.

[0046] When the surgical incision has problems such as suppuration or non-healing, multiple catheters 5 are set at both ends of the delivery cavity, so that the distribution paths of several catheters 5 at the fracture site are clear, and the catheters 5 are fixed and stable, which is convenient for the nursing doctor to perform manual operations such as draining pus from the incision and cleaning with disinfectant.

[0047] Technical effect: In the embodiment of the present application, the external fixator includes six movable components, and the total length of the movable components can be adjusted by screws to adjust the position of the Kirschner wire. The total length is coordinated with the first joint and the second joint so that the position of the entire movable component relative to the axis can be tilted to obtain more Kirschner wire fixation postures. After that, the bones are fixed with the Kirschner wires to achieve the purpose of fixing the fracture. The technical problem of the relatively single fixing posture of the external fixator in the prior art is solved; the technical effect of the external fixator having more adjustable postures is achieved.

[0048] In the embodiment of the present application, by designing the first joint and the second joint as universal joints, the movable component can have a variety of tilting postures relative to the first base and the second base; at the same time, by arranging the circumference of multiple movable components in equal parts, the device can coordinate the force between the multiple movable components so that the posture of the device can be stably maintained.

[0049] In the embodiment of the present application, a first movable groove and a second movable groove are provided on the first base and the second base, and the movable assembly is fixed at a position relative to the first base and the second base, so that the device can be adjusted to increase its postures, so that when facing specific fracture cases, doctors can design external fixation plans more specifically and reduce the limitations of the external fixation bracket on the surgical plan.

[0050] The conveying cavity and the accommodating cavity are integrated into one, which saves space on the block and also saves the block manufacturing process.

Claims

1. An external fixator for the elderly, characterized in that: The external bone fixation support comprises: First Pedestal; a second base, the second base being spaced apart from the first base; and A movable component, the movable component is arranged between the first base and the second base, and the movable component comprises: Fixed block; A motor, wherein a screw is arranged on the output end of the motor, the motor is fixedly connected to the fixed block by a guide column, and the guide column and the screw are arranged in parallel; The movable block is provided with a through internal thread, through which the movable block is connected to the screw rod; the movable block is also provided with a guide post hole, through which the movable block is sleeved on the guide post; a first joint, two ends of which connect the movable block and the second base; and A second connector, two ends of which are connected to the motor and the first base; The fixed block and the movable block can respectively accommodate Kirschner wires, and the motor acts on the screw rod, so that the distance between the movable block and the motor can be adjusted through the screw rod.

2. The external fixator according to claim 1, characterized in that: The first joint and the second joint are both universal joints.

3. The external bone fixator according to claim 1, characterized in that: The first base is provided with a first movable groove relative to the second joint, and the position of the second joint on the first base can be adjusted through the first movable groove.

4. The external bone fixator according to claim 1, characterized in that: The second base is provided with a second movable groove relative to the first joint, and the position of the first joint on the second base can be adjusted through the second movable groove.

5. The external bone fixator according to claim 1, characterized in that: The movable block is arranged between the motor and the fixed block, and a connecting rod is arranged between the movable block and the first joint, so that the first joint is arranged outside the fixed block through the connecting rod.

6. The external bone fixator according to claim 5, characterized in that: The fixing block is provided with a connecting hole relative to the connecting rod, and the fixing block is sleeved on the connecting rod through the connecting hole.

7. The external bone fixator according to any one of claims 1 to 6, characterized in that: There are multiple movable components, and the multiple movable components are equally divided around the circumference.

8. The external bone fixator according to claim 7, characterized in that: The fixed block and the movable block respectively accommodate Kirschner wires by setting a first accommodating cavity and a second accommodating cavity. The first accommodating cavity and the second accommodating cavity are through cavities with two ends passing through, and the first accommodating cavity and the second accommodating cavity are in a posture of passing through from the outside to the inside when viewed as a whole of the external bone fixator.

9. The external bone fixator according to any one of claims 1 to 6, characterized in that: The fixed block and / or the movable block is provided with a delivery cavity, the delivery cavity has at least two openings, and the external catheter can act on the fixed block and / or the movable block through the delivery cavity.

10. The external bone fixator according to claim 9, characterized in that: The first and second delivery cavities are the first and second accommodating cavities. Delivery cavities with different tube diameters and penetrating along the four sides of the blocks are respectively arranged around the fixed block and the movable block to facilitate the fixing of Kirschner wires with different tube diameters.

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