External fixation frame for bone rehabilitation
Technical Field
The invention relates to the technical field of orthopaedics correction and rehabilitation equipment, in particular to an external fixing frame for bone rehabilitation.
Background
In the case of surgical bone surgery, the fixing device is indispensable, and the traditional fixing mode generally adopts a steel plate internal fixing mode, and the external fixing mode with less wound is also present. The common external fixation device is mainly an Ilizarov external fixator and a Taylor skeleton. The Ilizarov technique uses a multi-planar fine K-wire penetrating the limb and bone tissue and connecting an annular anchor. Taylor's improvement ILizarov external fixation system, connects six telescoping elongate rods to proximal and distal rings at angles and can be rotated about the rotational axis at the connection point, with one ring changing position relative to the other ring as long as the length of one of the elongate rods is adjusted.
But the both ends of current extension rod are connected respectively on the terminal surface of proximal end ring and distal end ring to make the extension rod only can rotate around a rotation axial on the ring, lead to current mount to need fine setting many times when installing, hardly reach best installation effect even, consequently greatly reduced the flexibility ratio of mount when installing.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an external fixing frame for bone rehabilitation, which can effectively improve the flexibility degree of the fixing frame during installation.
In order to achieve the above purpose, the present invention provides the following technical solutions: the external fixing frame for bone rehabilitation comprises two fixed ring parts and telescopic connecting rod parts, wherein six telescopic connecting rod parts are arranged on the two fixed ring parts, the two fixed ring parts are connected through the six telescopic connecting rod parts, a rotating corner connecting piece used for being connected with the telescopic connecting rod parts is arranged on the circumferential outer side wall of the fixed ring part, two ends of the telescopic connecting rod part in the length direction are respectively connected with the two fixed ring parts through the rotating corner connecting piece, the rotating corner connecting piece comprises a fixed ring connecting rod with one end used for being axially and rotationally connected with the fixed ring parts and a connecting rod with the other end used for being connected with the telescopic connecting rod parts, the fixed ring connecting rod and the fixed ring component are rotationally connected, the rotation axial direction of the fixed ring connecting rod is consistent with the length direction of the fixed ring connecting rod, the length direction of the connecting rod is perpendicular to the length direction of the fixed ring connecting rod, the telescopic connecting rod component comprises a connecting rod mounting part which is used for being detachably and fixedly connected with the connecting rod, the connecting rod mounting part and the connecting rod are slidably and fixedly connected, and the sliding direction between the connecting rod mounting part and the connecting rod is the length direction of the connecting rod.
The invention is further provided with: the connecting rod mounting piece is of a tubular structure, the connecting rod is connected in the connecting rod mounting piece in a sliding mode, the outer side wall of the connecting rod mounting piece is connected with a fastening screw which can be abutted to the outer side wall of the connecting rod in a threaded mode, and the fastening screw can limit the sliding of the connecting rod when the end portion of the fastening screw is abutted to the outer side wall of the connecting rod in the rotating process.
The invention is further provided with: the connecting rod is characterized in that a fastening caulking groove for embedding the top end of the fastening screw is formed in the outer side wall of the connecting rod, and the length direction of the fastening caulking groove extends along the length direction of the connecting rod.
The invention is further provided with: be provided with the connecting bolt that is used for being connected with the connecting rod on the connecting rod mounting, be provided with the connecting hole that is used for being connected with the connecting bolt on the connecting rod, connecting bolt passes the tip spiro union of connecting hole and has connecting nut, connecting hole is provided with a plurality ofly to each connecting hole sets up along the length direction evenly arranged of connecting rod, connecting bolt is provided with two at least, and adjacent two connecting bolt's interval size and adjacent two connecting hole's interval size looks adaptation, connecting rod mounting can be connected through connecting bolt and different connecting hole and adjust telescopic connecting rod part apart from the interval of solid fixed ring part.
The invention is further provided with: the fixed ring part is provided with a rotating connecting hole for rotating and connecting the fixed ring connecting rod, the inner diameter of the rotating connecting hole is matched with the outer diameter of the fixed ring connecting rod, the end part of the fixed ring connecting rod, which penetrates through the rotating connecting hole, is detachably connected with a limiting block for limiting the fixed ring connecting rod to be pulled out from the rotating connecting hole, the outer diameter of the limiting block is larger than the inner diameter of the rotating connecting hole, and a limiting ring which can be abutted to the opening end of the rotating connecting hole is arranged on the outer side of the fixed ring connecting rod, and the outer diameter of the limiting ring is larger than the inner diameter of the rotating connecting hole.
The invention is further provided with: the fixed ring component is in threaded connection with a locking screw used for limiting rotation of the fixed ring connecting rod, and the locking screw can limit rotation of the fixed ring connecting rod when the end part of the locking screw is abutted on the fixed ring connecting rod in the rotation process.
The invention is further provided with: the locking caulking groove for embedding the top end of the locking screw is formed in the fixing ring connecting rod corresponding to the locking screw, and the locking caulking groove is arranged on the outer side wall of the fixing ring connecting rod in a surrounding mode.
In summary, the invention has the following beneficial effects: the telescopic connecting rod component and the fixed ring component in the mounting process of the fixing frame comprise a fixed ring connecting rod and a fixed ring component which are connected in a rotating way and a connecting rod and a connecting rod mounting piece which are connected in a detachable sliding way; the fixed ring connecting rod is rotationally connected to the circumferential outer side wall of the fixed ring component, and the telescopic connecting rod component can be detachably and slidably connected with the connecting rod through the connecting rod mounting piece, so that the two fixing frames can flexibly adjust multiple degrees of freedom through rotating the corner connecting piece during adjustment and mounting, and the mounting effect can be effectively improved.
If the near-end fixed frame rotates or tilts and swings relative to the far-end fixed frame, the rotation axial direction of the fixed ring connecting rod and the fixed ring component can be regulated and controlled, and even when the swing amplitude is larger, the tilting angle of the telescopic connecting rod component can be regulated and controlled through the relative sliding of the connecting rod and the connecting rod mounting piece, so that the flexible regulation and control of the telescopic connecting rod component can be realized, and the flexibility degree of the fixed frame during mounting can be effectively improved.
Drawings
FIG. 1 is a schematic diagram of a structure of a fixing frame in a side view direction;
FIG. 2 is a schematic top view of the fixing frame;
fig. 3 is a schematic perspective view of a telescopic link member cooperating with a turning corner connector.
FIG. 4 is a schematic view of the structure of the telescopic link member in a coupled state with the stationary ring member by a rotating corner connector;
FIG. 5 is a schematic view of the turning corner connector in use;
Fig. 6 is a schematic view of another embodiment of the telescopic link member connected to the stationary ring member by a rotating corner connector.
Reference numerals: 1. a stationary ring member; 11. rotating the connecting hole; 12. a locking screw; 2. a telescopic link member; 21. a link mounting member; 22. a fastening screw; 23. a connecting bolt; 3. rotating the corner connector; 31. a fixed ring connecting rod; 311. a limiting block; 312. a limiting ring; 313. locking the caulking groove; 32. a connecting rod; 321. fastening the caulking groove; 322. and connecting the through holes.
Detailed Description
The invention will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Referring to fig. 1-6, an external fixator for bone rehabilitation is shown, which comprises a fixed ring component 1 and a telescopic connecting rod component 2, wherein two fixed ring components 1 are arranged, six telescopic connecting rod components 2 are arranged, two fixed ring components 1 are connected through six telescopic connecting rod components 2, a rotating corner connecting piece 3 used for being connected with the telescopic connecting rod component 2 is arranged on the circumferential outer side wall of the fixed ring component 1, two ends of the length direction of the telescopic connecting rod component 2 are respectively connected with the two fixed ring components 1 through the rotating corner connecting piece 3, the rotating corner connecting piece 3 comprises a fixed ring connecting rod 31 with one end used for being axially and rotationally connected with the fixed ring component 1 and a connecting rod 32 with the other end used for being connected with the telescopic connecting rod component 2, the rotating axial direction of the fixed ring connecting rod 31 and the length direction of the fixed ring connecting rod 31 are kept consistent, the length direction of the connecting rod 32 and the length direction of the fixed ring connecting rod 31 are vertically arranged, the telescopic connecting rod component 2 comprises a connecting rod mounting piece 21 used for being detachably and fixedly connected with the connecting rod 32, the connecting rod mounting piece 21 and the connecting rod 32 are slidably and fixedly connected, and the connecting rod 32 is slidably arranged in the length direction of the connecting rod 32.
The telescopic connecting rod part 2 and the fixed ring part 1 of the fixing frame in the installation process comprise a fixed ring connecting rod 31 which is in rotary connection with the fixed ring part 1 and a connecting rod 32 which is in detachable sliding connection with the connecting rod installation piece 21; wherein fixed ring connecting rod 31 rotates and connects on the circumference lateral wall of fixed ring part 1 to telescopic connecting rod part 2 can be through connecting rod installed part 21 and connecting rod 32 can dismantle the connection that slides, consequently two mounts can realize the nimble regulation of multi freedom through turning corner connecting piece 3 when adjusting the installation, can effectively improve the installation effectiveness.
If the proximal end fixed frame rotates or tilts and swings relative to the distal end fixed frame, the rotation axial direction of the fixed ring connecting rod 31 and the fixed ring component 1 can be regulated and controlled, and even when the swing amplitude is large, the tilting angle of the telescopic connecting rod component 2 can be regulated and controlled through the relative sliding of the connecting rod 32 and the connecting rod mounting piece 21, so that the flexible regulation and control of the telescopic connecting rod component 2 can be realized, and the flexibility degree of the fixed frame during mounting can be effectively improved.
The connecting rod mounting piece 21 is of a tubular structure, the connecting rod 32 is connected in the connecting rod mounting piece 21 in a sliding mode, the outer side wall of the connecting rod mounting piece 21 is connected with a fastening screw 22 in a screwed mode, the fastening screw 22 can be in contact with the outer side wall of the connecting rod 32 in a screwed mode, and the connecting rod 32 can be limited to slide when the end portion of the fastening screw 22 is in contact with the outer side wall of the connecting rod 32 in the rotating process. The connecting rod 32 is inserted into the connecting rod mounting piece 21 and is connected in a sliding manner, when the connecting rod 32 slides into place from the connecting rod mounting piece 21, the connecting rod can be locked by the fastening screw 22, the structure is simple and easy to implement, the sliding travel of the connecting rod 32 in the connecting rod mounting piece 21 can be flexibly regulated and controlled, and the fixing frame can be conveniently locked and fixed.
The outer side wall of the connecting rod 32 is provided with a fastening caulking groove 321 for embedding the top end of the fastening screw 22, and the length direction of the fastening caulking groove 321 is extended along the length direction of the connecting rod 32. When the top end of the fastening screw 22 is embedded into the fastening caulking groove 321, the top end of the fastening screw 22 can be abutted against the two sides of the width of the fastening caulking groove 321, so that the limiting rotation of the connecting rod 32 can be realized, the axial rotation of the connecting rod 32 can be limited, and the connecting firmness of the connecting rod 32 and the connecting rod mounting piece 21 can be further improved.
The connecting rod mounting piece 21 is provided with a connecting bolt 23 used for being connected with the connecting rod 32, the connecting rod 32 is provided with a connecting through hole 322 used for being connected with the connecting bolt 23, the connecting bolt 23 penetrates through the end portion spiro union of the connecting through hole 322 and is provided with a connecting nut, the connecting through hole 322 is provided with a plurality of, and each connecting through hole 322 is evenly arranged along the length direction of the connecting rod 32 and is provided with two at least, the interval size of every two adjacent connecting bolts 23 is matched with the interval size of every two adjacent connecting through holes 322, and the connecting rod mounting piece 21 can be connected with different connecting through holes 322 through the connecting bolt 23 and adjust the interval of telescopic connecting rod part 2 from the fixed ring part 1. The connecting rod mounting piece 21 and the connecting rod 32 can be fastened and connected through the two connecting bolts 23, and the connecting bolts 23 can be matched with different connecting through holes 322 to adjust the distance between the telescopic connecting rod component 2 and the fixed ring component 1, so that the structure is simple and easy to implement, and the connection firmness degree of the connecting rod 32 and the connecting rod mounting piece 21 can be effectively improved.
The fixed ring part 1 is provided with a rotating connecting hole 11 for rotating and connecting the fixed ring connecting rod 31, the inner diameter size of the rotating connecting hole 11 is matched with the outer diameter size of the fixed ring connecting rod 31, the end part of the fixed ring connecting rod 31 penetrating through the rotating connecting hole 11 is detachably connected with a limiting block 311 for limiting the fixed ring connecting rod 31 to be pulled out from the rotating connecting hole 11, the outer diameter size of the limiting block 311 is larger than the inner diameter size of the rotating connecting hole 11, the outer side of the fixed ring connecting rod 31 is provided with a limiting ring 312 which can be abutted against the opening end of the rotating connecting hole 11, and the outer diameter size of the limiting ring 312 is larger than the inner diameter size of the rotating connecting hole 11. The fixed ring connecting rod 31 is inserted in the rotation connecting hole 11, and two ends of the fixed ring connecting rod 31 are respectively abutted to two ends of the rotation connecting hole 11 through the limiting block 311 and the limiting block 311, so that the fixed ring connecting rod 31 can be effectively prevented from swinging in the rotation connecting hole 11, and the stability of the rotation of the fixed ring connecting rod 31 on the fixed ring component 1 is improved.
The locking screw 12 for limiting the rotation of the fixed ring connecting rod 31 is screwed on the fixed ring component 1, and the locking screw 12 can limit the rotation of the fixed ring connecting rod 31 when the end part of the locking screw 12 is abutted on the fixed ring connecting rod 31 in the rotation process. The rotation junction of the fixed ring connecting rod 31 and the fixed ring part 1 can be locked through the locking screw 12, the structure is simple and easy to implement, and the rotation limiting of the rotating corner connecting piece 3 can be conveniently realized, so that the locking fixation of the fixing frame can be effectively realized.
The fixing ring connecting rod 31 is provided with a locking caulking groove 313 for embedding the top end of the locking screw 12 at the position corresponding to the locking screw 12, and the locking caulking groove 313 is arranged on the outer side wall of the fixing ring connecting rod 31 in a surrounding manner. When the top end of the locking screw 12 is embedded into the locking caulking groove 313, the top end of the locking screw 12 can be abutted against the two sides of the width of the locking caulking groove 313, so that the rotation limiting effect on the fixed ring connecting rod 31 can be realized, the axial movement limiting effect on the fixed ring connecting rod 31 can be realized, and the connection firmness degree of the fixed ring connecting rod 31 and the fixed ring component 1 can be further improved.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.