CN111374742B - Dynamic and static combined three-dimensional adjustable fracture reduction external fixator - Google Patents
Dynamic and static combined three-dimensional adjustable fracture reduction external fixator Download PDFInfo
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- CN111374742B CN111374742B CN202010210678.8A CN202010210678A CN111374742B CN 111374742 B CN111374742 B CN 111374742B CN 202010210678 A CN202010210678 A CN 202010210678A CN 111374742 B CN111374742 B CN 111374742B
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- 230000003068 static effect Effects 0.000 title claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 210000003275 diaphysis Anatomy 0.000 abstract description 6
- 230000035876 healing Effects 0.000 abstract description 6
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 230000002980 postoperative effect Effects 0.000 abstract description 5
- 230000005714 functional activity Effects 0.000 abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 description 87
- 206010017076 Fracture Diseases 0.000 description 87
- 239000000463 material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000008407 joint function Effects 0.000 description 4
- 230000000399 orthopedic effect Effects 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000007356 Fracture Dislocation Diseases 0.000 description 1
- 208000005214 Poroma Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 201000001013 eccrine acrospiroma Diseases 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004118 muscle contraction Effects 0.000 description 1
- 230000009894 physiological stress Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6433—Devices extending alongside the bones to be positioned specially adapted for use on body parts other than limbs, e.g. trunk or head
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
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Abstract
A three-dimensional adjustable fracture reduction external fixator combining dynamic and static is characterized in that a first adjusting screw and a second adjusting screw are rotated according to dislocation of fracture, so that a second adjusting frame translates and rotates relative to a main adjusting rod, a needle fixing block arranged on the second adjusting frame clamps bone fixing needles to drive dislocation diaphysis to translate and swing up and down, the purpose of fine reduction of thread adjustment is achieved, longitudinal pressure is generated at the fracture end by adjusting the main body adjusting rod, and relative micro-motion of the fracture end and lateral relative micro-motion in different directions are generated by adjusting the first adjusting screw rod and the second adjusting screw rod, so that healing of the fracture end is promoted; after the successful back resets, erection joint post and pole fixed block install the dead lever on the fixed block, increase the stability of the fracture fixation needle on the needle fixed block, guarantee the effectual fixed of fracture end position after resetting, as the basis of functional activity, guaranteed the fixed stability of fracture end and the feasibility of postoperative functional exercise, reached the treatment purpose that moves the combination.
Description
Technical Field
The invention relates to an orthopedic and plastic surgical instrument, in particular to a dynamic and static combined three-dimensional adjustable fracture reduction external fixator.
Background
In recent years, the therapeutic principles of fracture have changed greatly, from the mechanical fixation (AO) system to the biological fixation (Biological osteosynthesis, BO) system. One of the principles of biological fixation (BO) is to pursue elastic fixation, use internal fixation with low elastic modulus, and avoid stress shielding under strong fixation and complications caused by the use of excessive fixation. Allowing for micro-motion under elastic fixation of the fracture, inducing callus formation during functional activity.
Currently, the main fracture external fixator such as Orthofix single-arm orthopedic external fixator on the market can be elongated and shortened through threads to correct the separation or overlapping of fracture axes, but the external fixing support of Orthofix belongs to inelastic fixation, does not conform to the biological fixation principle, has no three-dimensional space thread adjustment and reduction function, and has poor fracture alignment and increased possibility of fracture delayed healing and non-healing after being fixed by the fracture external fixator, so that the existing single-arm orthopedic external fixator is mainly used for temporary external fixation of fracture, the orthopedic external fixator is required to be removed in a second period, fracture incision reduction is adopted, and the fracture is treated by adopting steel plates or intramedullary needle internal fixation, and the adjustment and reduction difficulty is higher due to the lack of the three-dimensional space thread adjustment and reduction function when the fracture is axially angled and displaced before and after or left and right; patent number: the fracture external fixator disclosed in CN201820534150.4 can be used for carrying out three-dimensional space thread adjustment, helping a patient carry out early exercise, early joint function exercise after operation of the patient can generate intermittent physiological stress by muscle contraction, so that fracture healing is accelerated, but fracture fixation instability exists in early exercise after operation, meanwhile, if a stainless steel material is adopted as a main body adjusting rod to ensure fixation stability, the performance of elastic fixation is lacking, the fracture external fixator does not conform to biological fixation principles, namely the fracture external fixator cannot simultaneously meet fracture elastic fixation conditions and fracture fixation stability.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the dynamic and static combined three-dimensional adjustable fracture reduction external fixator which meets the fracture biological fixing principle, enables elastic fixation to be quantitatively adjusted, can realize adjustment and reduction of three-dimensional space threads at the fracture end, and is convenient to assemble and disassemble.
The invention is realized by the following technical measures, the three-dimensional adjustable fracture reduction external fixator comprises a main body adjusting rod with adjustable length, wherein two end parts of the main body adjusting rod are respectively provided with a first hinge post, the first hinge posts are hinged to the middle part of a first adjusting frame, the end parts of the first hinge posts are rotatably provided with first adjusting screws, the top thread parts of the first adjusting screws are in threaded connection with one end of the first adjusting frame, the first adjusting screws can be rotated to enable the first adjusting frame to translate, the first adjusting frame is provided with a second hinge post which is perpendicular to the translation direction of the first adjusting frame, the second hinge post is hinged to the middle part of a second adjusting frame, the first adjusting frame is rotatably provided with a second adjusting screw, the top thread parts of the second adjusting screws are in threaded connection with one end of the second adjusting frame, the second adjusting frame is rotated to enable the second adjusting frame to swing up and down, and a needle fixing block is detachably connected to the second adjusting frame; the needle fixing block is provided with a detachable connecting column, the connecting column is provided with a rod fixing block, and the rod fixing block is connected with a fixing rod.
As a preferable mode, the main body adjusting rod comprises a moving rod and a sleeve sleeved at one end of the moving rod in a sliding mode, a third adjusting screw rod is arranged in the sleeve in a penetrating mode, and the top thread part of the third adjusting screw rod is in threaded connection and axially penetrates into the moving rod.
As a preferable mode, the main body adjusting rod comprises a main rod body and a moving rod which is sleeved at one end of the main rod body in a sliding way, and the moving rod is provided with a first strip-shaped groove; the screw penetrates through the first strip-shaped groove and is connected with the first adjusting frame.
As a preferable mode, the movable rod further comprises a second bar-shaped groove, wherein the screw penetrates through the second bar-shaped groove to be connected with one end of the main rod body penetrating into the movable rod; the movable rod is characterized by further comprising a bidirectional adjusting screw, wherein two ends of the bidirectional adjusting screw are detachably connected with the main rod body and the movable rod respectively.
As a preferred mode, the needle fixing device further comprises a connecting seat, the needle fixing block is arranged on the connecting seat, the connecting seat is arranged on the second adjusting frame, the connecting seat is provided with a fixing through hole, the connecting column penetrates through the fixing through hole, and one side of the connecting seat is provided with a threaded hole.
As a preferable mode, the second adjusting frame is provided with a groove, and the bottom of the connecting seat is provided with a matched lug corresponding to the groove.
Preferably, the connecting post is arranged on the needle fixing block, and the connecting post forms a preset angle with the surface of the needle fixing block.
As a preferable mode, a needle sleeve is rotatably arranged in the rotary through hole, and a fracture fixing needle is fixed in the needle sleeve.
As a preferable mode, the connecting seat is in a shape of T or a straight line.
Preferably, the body adjusting lever includes an extension connecting portion for connecting two or more body adjusting levers.
The external fixator is suitable for fracture reduction of various joints, diaphysis and collarbones of a human body, when the external fixator is used, the fracture position is reduced simply, at least three fracture fixing needles are inserted into two ends of a fracture line under X-ray perspective, then the fracture fixing needles are fixed by using needle fixing blocks, according to dislocation of fracture, the first adjusting screw and the second adjusting screw are rotated, so that the second adjusting frame translates and rotates relative to a main adjusting rod, the needle fixing blocks arranged on the second adjusting frame clamp the bone fixing needles to drive the dislocated diaphysis and swing up and down, accurate reduction of dislocation of fracture in front-back direction and left-right direction is realized, meanwhile, the length of the main adjusting rod can be adjusted, longitudinal pressure is generated at the fracture end, and relative micro-motion of the fracture end and relative micro-motion of sides in different directions are generated by adjusting the first adjusting screw and the second adjusting screw, so that healing of the fracture end is promoted; after the external fixator is subjected to three-dimensional adjustment, a connecting column and a rod fixing block are installed, a fixing rod is installed on the fixing block, the fixing rod can increase the stability of a fracture fixing needle on the needle fixing block, and the position of a fracture end after reduction is effectively fixed to serve as a basis of functional activity; when a patient exercises joint functions in early postoperative period, only the fixing rod is required to be detached, the fixing rod is convenient to detach, simple to operate and convenient to care, and the damage to bones and surrounding tissues is small; the fracture fixer ensures the stability of fracture end fixation and the feasibility of postoperative functional exercise by installing the fixing rod, achieves the treatment aim of dynamic and static combination, and simultaneously avoids the pain of taking out the steel plate or the intramedullary needle after mechanical fixation and fracture treatment.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a structure of a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a third embodiment of the present invention;
FIG. 4 is a schematic view of a portion of a structure of an embodiment of the present invention;
FIG. 5 is a schematic view of a needle fixing block according to an embodiment of the present invention;
FIG. 6 is a schematic view of a needle fixing block according to an embodiment of the present invention.
In the figure, the label is numbered and the name: 1. the main body adjusting rod 101, the moving rod 102, the sleeve 103, the main rod body 104, the third adjusting screw 105, the second bar slot 106, the bidirectional adjusting screw 107, the adjusting hole 108, the screw 109, the first bar slot 2, the first hinge post 3, the first adjusting frame 4, the first adjusting screw 5, the second hinge post 6, the second adjusting frame 7, the second adjusting screw 8, the needle fixing block 81, the connecting seat 82, the fixing through hole 83, the threaded hole 84, the rotating through hole 85, the needle sleeve 86, the upper fixing block 87, the lower fixing block 88, the stud 89, the semicircular column slot 9, the fracture fixing needle 10, the connecting post 11, the rod fixing block 111, the clamping connecting block 12, the fixing block 13, the bar hole 14 and the bump
Detailed Description
The invention will be described in further detail below with reference to examples and with reference to the accompanying drawings.
Example 1
The three-dimensional adjustable fracture reduction external fixator with dynamic and static combination comprises a main body adjusting rod 1 with adjustable length, wherein the two ends of the main body adjusting rod 1 are respectively provided with a first hinge post 2, the first hinge posts 2 are hinged at the middle part of a first adjusting frame 3, the end parts of the first hinge posts 2 are rotatably provided with first adjusting screws 4, the top thread parts of the first adjusting screws 4 are in threaded connection with one end of the first adjusting frame 3, the first adjusting screws 4 are rotated to enable the first adjusting frame 3 to translate, the first adjusting frame 3 is provided with a second hinge post 5 which is perpendicular to the translation direction of the first adjusting frame, the second hinge post 5 is hinged at the middle part of a second adjusting frame 6, the first adjusting frame 3 is rotatably provided with a second adjusting screw 7, the top thread parts of the second adjusting screws 7 are in threaded connection with one end of the second adjusting frame 6, the second adjusting frame 6 is rotated to enable the second adjusting frame 6 to swing up and down, the second adjusting frame 6 is provided with a needle fixing block 8, and a fracture fixing needle 9 is clamped on the needle fixing block 8; the needle fixing block 8 is provided with a connecting column 10, the connecting column 10 is provided with a rod fixing block 11, and the rod fixing block 11 is connected with a fixing rod 12.
The fracture external fixator is suitable for fracture reduction of various joints, diaphysis and collarbones of a human body, when the fracture external fixator is used, fracture dislocation is reduced simply, at least three fracture fixing needles 9 are inserted into two ends of a fracture line under X-ray perspective, the fracture fixing needles 9 are fixed by using needle fixing blocks 8, a first adjusting screw 4 and a second adjusting screw 7 are rotated according to the fracture position, so that a second adjusting frame 6 translates and rotates relative to a main adjusting rod 1, the needle fixing blocks 8 arranged on the second adjusting frame 6 drive the fracture fixing needles 9 to translate and swing up and down to perform three-dimensional space adjustment on the diaphysis of the fracture, the distance of each joint is adjusted through threads, three-dimensional space thread adjustment fine reduction of fracture ends is realized, and simultaneously, the length of the main adjusting rod 1 can be adjusted to enable the fracture ends to generate longitudinal pressure, and axial micro-motion and lateral micro-motion of the fracture ends are generated through secondary adjustment of the first adjusting screw 4 and the second adjusting screw 7, so that fracture end healing is promoted; after the fracture end is adjusted and reset, a connecting column 10 and a rod fixing block 11 are installed, a fixing rod 12 is installed on the rod fixing block 11 and locked, the fixing rod 12 can increase the stability of a fracture fixing needle 9 on the needle fixing block 8, the stability of fracture fixation is prevented from being influenced by micro motion generated by a main body adjusting rod 1 of carbon fiber materials, the effective fixation of the position of the fracture end after the reset is ensured, and the fracture external fixator uses a low elastic modulus material, namely carbon fiber materials, as a frame body, can generate constant side pressure stress at the fracture end, so that the fracture end generates side micro motion, and the purpose of dynamic and static combination is achieved; when a patient performs joint function exercise in early postoperative period, only the fixing rod 12 is required to be removed, after a doctor helps the joint function exercise in early downlink period, the removed fixing rod 12 is installed back after the exercise is finished, and the stability of fracture ends in other time is kept; the device is convenient to detach, simple to operate, convenient to care and small in damage to bones and surrounding tissues; the fracture fixer ensures the stability of fracture end fixation and the feasibility of postoperative functional exercise by installing the fixing rod 12, thereby achieving the treatment purpose of dynamic and static combination.
In this embodiment, referring to fig. 1, the main body adjusting lever 1 includes a main lever body 103 and a moving lever 101 slidably sleeved on one end of the main lever body 103, where the moving lever 101 is provided with a second bar slot 105 and a first bar slot 109; the screw 108 is connected with the first adjusting frame 3 through the second bar-shaped groove 105, the first adjusting frame 3 slides along the first bar-shaped groove 109 according to the fracture position, and the screw 108 is locked after the length is roughly changed; the two-way adjusting screw 106 is detachably connected with the main rod body 103 and the moving rod 101 respectively, a screw 108 penetrates through the second strip-shaped groove 105 and is connected with one end of the main rod body 103 penetrating through the moving rod 101, the screw 108 is locked after fine adjustment by the two-way adjusting screw 106, the length of the main adjusting rod 1 can be adjusted by the two-way adjusting screw 106 in a finer mode, the purpose of elastic fixation and quantitative adjustment is achieved, the two-way adjusting screw 106 can be detached after adjustment, the structure and the weight of an external fixator after fixation are simplified, misoperation of a patient is prevented, a radial adjusting hole 107 is formed in the center of the two-way adjusting screw 106, an adjusting rod is inserted to rotate for adjustment, and knurling is convenient to rotate on the surface of the two-way adjusting screw in other embodiments.
In the present embodiment, referring to fig. 1, the rod fixing block 11 includes four clamp connection blocks 111, which are overlapped with each other and locked by screws 108, and which are respectively paired for clamping and fixing the connection post 10 and the fixing rod 12.
In the present embodiment, referring to fig. 1 to 4, the first adjusting screw 4 and the second adjusting screw 7 are respectively provided with hexagonal heads for easy adjustment by a wrench.
In this embodiment, referring to fig. 1, the connecting post 10 is vertically disposed on the needle fixing block 8, and in other embodiments, for convenience of installation, the connecting post 10 may be disposed on the needle fixing block 8 at a predetermined angle or the connecting post 10 may be L-shaped, so as to avoid interference between the fracture external fixator and the body.
In this embodiment, referring to fig. 1 to 3, the needle fixing block 8 is in a shape of a straight line, the needle fixing block 8 comprises an upper fixing block 86 and a lower fixing block 87, the lower fixing block 87 is connected with the second adjusting frame 6, a semi-cylindrical groove 89 adapted to the fracture fixing needle 9 is correspondingly formed in the upper fixing block 86 and the lower fixing block 87, the upper fixing block 86 and the lower fixing block 87 are connected through a stud 88, a fixing through hole 82 is formed in the middle of the needle fixing block 8, the connecting column 10 is arranged in the fixing through hole 82 in a penetrating manner, strip-shaped holes 13 are formed in two sides of the fixing through hole 82 in an outward extending manner, threaded holes 83 perpendicular to the strip-shaped holes 13 are formed in one side of the needle fixing block 8, a screw 108 is arranged in the threaded holes 83 in a penetrating manner, and the needle fixing block 8 is tightened by screwing the screw 108 to fix the connecting column 10.
The needle fixing block 8 and the connecting post 10 are convenient to detach, the needle fixing block 8 can be respectively and independently connected with the main body adjusting rod 1 and the three-dimensional thread adjusting part or the fixing rod 12 part thereof, the main body adjusting rod 1 and the three-dimensional thread adjusting part thereof are independently connected with the needle fixing block 8, the structure is simplified, the adjustment is convenient, the bone callus formation is formed at the fracture end in the middle and late stages of operation, the stability of the fracture end is obviously improved at the earlier stage, the main body adjusting rod 1 or the fixing rod 10 is not required to be used for simultaneous fixing, the fixed needle fixing block 8 can be independently connected with the connecting rod, the rod fixing block 11 and the fixing rod 12, or is fixed with the main body adjusting rod 1 and the three-dimensional thread adjusting part thereof, so that the elastic fixing function of the fracture fixator is kept, the connection is stable, and the structure is simplified.
In this embodiment, referring to fig. 1, two ends of the main body adjusting rod 1 are respectively provided with an extension connecting part, the extension connecting part comprises an extension connecting rod arranged at one end of the main body adjusting rod 1 and a connector arranged at the other end of the extension connecting rod, the connector is matched with the extension connecting rod, two or more main body adjusting rods 1 can be connected with each other through the extension connecting part, and a plurality of fracture fixing devices are connected with each other, so that the fracture fixing device can fix fracture diaphysis with different lengths across joints; the connecting position and the connecting angle of the fracture fixator are changed by changing the shape and the setting angle of the extension connecting rod or the sleeve, so that the aim of adapting to different fracture positions is fulfilled; in other embodiments, the two ends of the main body adjusting rod 1 may be provided with extension connecting rods, which have the same cross section size and shape as the fixing rods, and can be connected with the extension connecting rods of two or more fracture fixators and the fixing rods through the same specification of the clamping connecting blocks 111 or the bushings.
In the present embodiment, the main body adjusting rod 1 is made of carbon fiber material, and in other embodiments, other materials with low elastic modulus according to biological fixation principles can be used.
Example two
In this embodiment, referring to fig. 2, the difference from the first embodiment is that the main body adjusting lever 1 includes a moving rod 101 and a sleeve 102 slidably sleeved at one end of the moving rod 101, a third adjusting screw 104 is threaded in the sleeve 102, a top threaded portion of the third adjusting screw 104 is threaded and axially penetrates into the moving rod 101, and the moving rod 101 is extended into or out of the sleeve 102 to adjust the length of the main body adjusting lever 1 by rotating the third adjusting screw 104 from different directions, thereby adjusting the distance between the two end needle fixing blocks 8, and the third adjusting screw 104 is provided with a head portion of an inner hexagon for convenience of adjustment.
Example III
In this embodiment, referring to fig. 3, the difference from the first embodiment is that the device further comprises a connecting seat 81, the needle fixing block 8 is arranged on the connecting seat 81, the connecting seat 81 is arranged on the second adjusting frame 6, the connecting seat 81 is provided with a fixing through hole 82, the connecting post 10 is arranged in the fixing through hole 82 in a penetrating way, two sides of the fixing through hole 82 are outwards provided with strip-shaped holes 13, one side of the connecting seat 81 is provided with a threaded hole 83 perpendicular to the strip-shaped holes 13, a screw 108 is arranged in the threaded hole 83 in a penetrating way, the needle fixing block 8 is tightened to fix the connecting post 10 by screwing the screw 108, the needle fixing block 8 and the connecting rod are convenient to detach, the needle fixing block 8 can be respectively and independently connected with a part of the main adjusting rod 1 or a part of the fixing rod 12, the fracture end has a part of poroma in the middle and late stage after operation, the fracture end stability is obviously improved in early stage, the main adjusting rod 1 or the fixing rod 10 is not required to be simultaneously fixed, the fixed needle fixing block 8 after fixing is independently connected with the connecting rod 11 and the fixing rod 12, or the main body 1 and the three-dimensional adjusting rod 12 are simplified, the thread adjusting rod 1 and the fracture adjusting part are kept to be stably connected by the elastic fixing structure.
In this embodiment, referring to fig. 3, the needle fixing block 8 includes an upper fixing block 86 and a lower fixing block 87, a semi-cylindrical groove 89 adapted to the fracture fixing needle 9 is correspondingly formed in the upper fixing block 86 and the lower fixing block 87, the upper fixing block 86 and the lower fixing block 87 are connected with the connecting seat 81 through studs 88, wherein the needle fixing block 8 is respectively arranged on two sides of the connecting column 10, at least one rotation through hole 84 is formed in the needle fixing block 8, a needle sleeve 85 is rotatably arranged in the rotation through hole 84, a fracture fixing needle 9 is fixed in the needle sleeve 85, the needle sleeve 85 is a steel sleeve with a concave neck in the middle, a convex ring capable of being matched with the concave neck in a rotating mode is arranged in the rotation through hole 84, so that the steel sleeve is rotatably fixed in the rotation through hole 84, when the joint bending and stretching movable position rotates, the steel needle 9 corresponding to the inserted fracture is not moved with the backbone, and can be rotated through rotation between the needle fixing block 8 and the needle sleeve 85, so that flexibility of joint movement is ensured, in other embodiments, according to the fracture and the connecting seat 81 is also arranged on the T-shaped connecting seat 81 or the T-shaped connecting seat 81 of a patient, and the number of which is different from the T-shaped connecting seat 8 to the T-shaped connecting seat 81 is arranged on the two sides of the connecting seat 81, and the connecting seat 81 is fixed in the two-shaped seat 81, and the connecting seat is arranged in the shape of the connecting seat 81 according to the figure and the figure 8.
In this embodiment, referring to fig. 4 and 5, the second adjusting frame 6 is provided with a groove, and the bottom of the connecting seat 81 is provided with a protrusion 15 adapted to the groove, so as to facilitate installation, and limit the needle fixing block, and prevent the displacement of the needle fixing block from causing the offset of the fracture end.
The dynamic and static combined three-dimensional adjustable fracture reduction external fixator is described above for helping understanding the invention, but the implementation mode of the invention is not limited by the above examples, and any changes, modifications, substitutions, combinations and simplifications which do not deviate from the principles of the invention should be equivalent substitution modes and are included in the protection scope of the invention.
Claims (7)
1. A three-dimensional adjustable fracture reduction external fixator of sound combination formula, its characterized in that: the device comprises a main body adjusting rod capable of adjusting the length, wherein first hinge columns are respectively arranged at two ends of the main body adjusting rod, the first hinge columns are hinged to the middle part of a first adjusting frame, first adjusting screws are rotatably arranged at the ends of the first hinge columns, top end thread parts of the first adjusting screws are in threaded connection with one end of the first adjusting frame, the first adjusting screws are rotated to enable the first adjusting frame to translate, second hinge columns perpendicular to the translation direction of the first adjusting frame are arranged on the first adjusting frame, the second hinge columns are hinged to the middle part of a second adjusting frame, second adjusting screws are rotatably arranged on the first adjusting frame, top end thread parts of the second adjusting screws are in threaded connection with one end of the second adjusting frame, the second adjusting screws are rotated to enable the second adjusting frame to swing up and down, and needle fixing blocks are detachably connected to the second adjusting frame; the detachable connecting column is arranged on the needle fixing block, the rod fixing block is arranged on the connecting column, and the fixing rod is connected to the rod fixing block; the main body adjusting rod comprises a main rod body and a moving rod which is sleeved at one end of the main rod body in a sliding manner, a first strip-shaped groove is formed in the moving rod, and a screw penetrates through the first strip-shaped groove and is connected with the first adjusting frame; the screw penetrates through the second strip-shaped groove and is connected with one end of the main rod body penetrating through the moving rod; the two ends of the bidirectional adjusting screw are detachably connected with the main rod body and the movable rod respectively; still include the connecting seat, the needle fixed block is located on the connecting seat, the connecting seat is located on the second alignment jig, fixed through-hole has been seted up to the connecting seat, the spliced pole wears to locate in the fixed through-hole, threaded hole has been seted up to one side of connecting seat.
2. The dynamic and static combined three-dimensional adjustable fracture reduction external fixator according to claim 1, wherein: the main body adjusting rod comprises a moving rod and a sleeve sleeved at one end of the moving rod in a sliding mode, a third adjusting screw rod is arranged in the sleeve in a penetrating mode, and the top end thread part of the third adjusting screw rod is in threaded connection and axially penetrates into the moving rod.
3. The dynamic and static combined three-dimensional adjustable fracture reduction external fixator according to claim 1, wherein: the second adjusting frame is provided with a groove, and the bottom of the connecting seat is provided with a matched lug corresponding to the groove.
4. The dynamic and static combined three-dimensional adjustable fracture reduction external fixator according to claim 1, wherein: the connecting column is arranged on the needle fixing block, and the connecting column and the surface of the needle fixing block form a preset angle.
5. The three-dimensional adjustable fracture reduction external fixator of any of claims 1 to 4, wherein: the fracture fixing device is characterized in that the needle fixing block is provided with at least one rotating through hole, a needle sleeve is rotatably arranged in the rotating through hole, and a fracture fixing needle is fixed in the needle sleeve.
6. The three-dimensional adjustable fracture reduction external fixator of any of claims 1 to 4, wherein: the connecting seat is T-shaped or in a straight shape.
7. The three-dimensional adjustable fracture reduction external fixator of any of claims 1 to 4, wherein: the body adjustment lever includes an extension connection for connecting two or more body adjustment levers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210678.8A CN111374742B (en) | 2020-03-23 | 2020-03-23 | Dynamic and static combined three-dimensional adjustable fracture reduction external fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010210678.8A CN111374742B (en) | 2020-03-23 | 2020-03-23 | Dynamic and static combined three-dimensional adjustable fracture reduction external fixator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111374742A CN111374742A (en) | 2020-07-07 |
| CN111374742B true CN111374742B (en) | 2024-08-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108523974A (en) * | 2018-04-13 | 2018-09-14 | 左中男 | Campaign-styled adjustable external fixer for reduction of fracture |
| CN109717939A (en) * | 2019-03-20 | 2019-05-07 | 高志书 | A kind of multi-functional adjustable support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN86200021U (en) * | 1986-01-06 | 1986-12-17 | 吴万登 | External fixing device for fracture |
| CN2144487Y (en) * | 1992-10-15 | 1993-10-27 | 肖巍 | Adjustable external fixator for long bone fracture |
| RU2264189C2 (en) * | 2003-11-21 | 2005-11-20 | Московский государственный медико-стоматологический университет | Compression-distraction apparatus |
| US8123747B2 (en) * | 2007-08-16 | 2012-02-28 | Nutek Orthopaedics, Inc. | Apparatus for external fixation of a fractured distal radius with angularly adjustable pin clamping means |
| CN202526285U (en) * | 2012-04-16 | 2012-11-14 | 毛建勋 | Double-layer unilateral skeletal external fixator |
| CN209269847U (en) * | 2018-04-13 | 2019-08-20 | 左中男 | Campaign-styled adjustable external fixer for reduction of fracture |
| CN209864008U (en) * | 2019-03-20 | 2019-12-31 | 高志书 | Medical external fixator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523974A (en) * | 2018-04-13 | 2018-09-14 | 左中男 | Campaign-styled adjustable external fixer for reduction of fracture |
| CN109717939A (en) * | 2019-03-20 | 2019-05-07 | 高志书 | A kind of multi-functional adjustable support |
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