CN103445834A - Fast drawing extension rod - Google Patents
Fast drawing extension rod Download PDFInfo
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- CN103445834A CN103445834A CN2013104008510A CN201310400851A CN103445834A CN 103445834 A CN103445834 A CN 103445834A CN 2013104008510 A CN2013104008510 A CN 2013104008510A CN 201310400851 A CN201310400851 A CN 201310400851A CN 103445834 A CN103445834 A CN 103445834A
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Abstract
The invention provides a fast drawing extension rod, which is connected between two hole rings in an external fixator, and comprises a threaded rod, an inner sleeve rod and an outer sleeve rod, wherein the threaded rod is inserted into the inner sleeve rod from top to bottom, the inner sleeve rod is inserted into the outer sleeve rod from top to bottom, the lower end of the outer sleeve rod is provided with threaded connecting pieces for hole ring connection, the upper end of the inner sleeve rod is provided with an outer flange, a pressure controller is arranged between the upper end part of the inner sleeve rod and the threaded rod, the inner side wall of the upper end part of the outer sleeve rod is provided with a cone-shaped opening, the outer side wall of the upper end part of the outer sleeve rod is provided with an outer thread section, and a locking joint is arranged between the upper end part of the outer sleeve rod and the inner sleeve rod. The fast drawing extension rod can meet the requirements of performing rigid fixation in the early stage of fracture, providing elastic fixation with axial and comprehensive stress stimulation in the middle stage of fracture and providing balanced fixation in the later stage, and compared with the prior art, the fast drawing extension rod is easier to use.
Description
Technical field
The present invention relates to a kind of connecting rod be applied on the bone external fixator.
Background technology
In the modern process of medical skill, material and the configuration aspects of bone external fixator obtain significant progress, the hole ring type external fixator of the outstanding invention of the medical expert Ilizarov of Russia beyond doubt, hole ring type external fixator and fine steel needle tension technology, make the bone external fixator on primitive meaning, in mechanical function mode and Mechanobiology performance, quality variation, performance of control raising have occurred, indication is more extensive, is the major progress of bone external fixator technical field.The technology of Ilizarov has also excited the interest of countless orthopedists to study, research and the application of bone External technique, thereafter U.S. Dror Paley has write " orthopedics's principle ", creative the CORA concept is applied to bone outward among fixing rescuing, make bone outward fixedly straightening technique aspect standardization and digitized, making substantial progress.Meanwhile, the research of orthopedic instruments also has rapid progress: 1984, Bastiani etc. invented a kind of monolateral axle dynamic external fixator, and simplify to have grasped and make difficulty, be the more a kind of bone external fixator of domestic and international application; AO school also recognizes the using value of bone external fixator opening, in infected fracture, has developed a kind of tubulose external fixator.American J Charles Taylor in 1994 (charles. Taylor) etc. the people on the basis of Ilizarov annular external fixator, improvement is designed to " Spatial infrastructure " external fixator (Taylor Spatial Frame of numeral, be called for short TSF), " Spatial infrastructure " external fixator is a kind of hole ring type external fixator that connects obliquely on near-end and distal loop by six telescopic connecting rods and can rotate freely at the junction point place, and this hole ring type external fixator also claims " Taylor's space frame ".
Taylor's space frame has six connecting rods that can regulate length, and the length of each connecting rod can directly be read, 6 connecting rods connect two rings of support, form an integral body (if with 5 connecting rods system is unstable, if with 7 connecting rod system would be subject to excessive restriction), total is extremely firm.Taylor's space frame is as long as regulate the wherein length of a connecting rod, a ring will another encircle change position relatively, connect the 6 piece pillars of base surface to platform, its length, spatially-variable, by means of robotics and parallel mechanics, regulate the length of 6 connecting rods by the instruction numeral of computer export, change the steric configuration of Taylor's space frame, reach that fracture site resets, the orthopedic or purpose that extends.
The treatment fracture is when (after comprising that the skeleton deformity osteotomy is orthopedic), how to implement reasonably fixing, can only be according to the biological regularity of knitting, analyze, estimate, explore rational rigidity of fixation, and carry out technological innovation with this, and be not only the reasonability around the study on fixation methods rigidity of fixation, so since the nineties in 20th century, Chinese scholar creativeness has proposed the regeneration reconstruction theory for basis, the bone External technique system that the cybernetics of take is criterion.
Now, the applicant, according to " orthopaedics Natural Reconstruction theory ", has proposed a kind of " the adaptability rigidity concept of fracture fixation ", i.e. the adaptability rigidity of fixation.Described adaptability rigidity of fixation, the phalanges external fixator maintain the reduction of the fracture stable in, according to the original growth mode of bone embryo, interim best rigidity of fixation is provided, take full advantage of the adaptive control of bone counter stress, adjust growth and the absorption of bone, promote the process of union of fracture, complete the optimized reconstruction of bone function, until knitting returns to the most perfect degree, in other words, be exactly that the rigidity of fracture fixation reduces along with the increase of the intensity of knitting the dynamic conversion process that biomechanics of bone intensity increases along with the reduction of rigidity of fixation.Sum up thus: the fracture early implementation is strong fixing, flexible fastening axial and that combined stress stimulates is provided mid-term, later stage provides balance to fix, this concept meets the biological process of fracture fixation, healing, reconstruction, to External technique clinically rational Application the theoretical direction be of practical significance is provided.
Although the design of Taylor's space frame, make with clinical practice and reached precision, standardization and intelligentized degree, but also there is the place not as people's will: 1, Taylor's space frame is difficult to meet fracture fixation, healing, the biological process of rebuilding, be difficult to meet the fracture early implementation strong fixing, flexible fastening axial and that combined stress stimulates is provided mid-term, later stage provides balance fixing needs, specifically, be exactly that the fixing rigidity of Taylor's space frame can not change, when running into some complicated especially cases (such as several problems for the treatment of that need exist simultaneously), it is not enough that the motility of Taylor's space frame seems, and must computer the instruction numeral of the output length of regulating 6 connecting rods, change thus the steric configuration of support, reaching fracture site resets, orthopedic or extend purpose, so lack function adaptability, certain limitation is arranged when clinical practice.2, Taylor's space frame can only connect and support two rings with 6 bars, form an integral body, if with 5 bars system is unstable, if with 7 bars system is subject to excessive restriction, obviously, whole system has been cured, not only manufacturing cost is high, and uses expensively, has increased medical treatment cost.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can meet strong fixing, the quick lengthening bar that flexible fastening, later stage that provide axially mid-term and combined stress stimulates provide the fixing requirement of balance of fracture early implementation, solve the compatibility (reasonability of the Mechanobiology environment) problem of mechanical energy (mechanical environment) and bioenergy (tissue regeneration), and solve traditional bone external fixator manufacturing cost high, use expensive problem.
For achieving the above object, the present invention adopts following technical scheme: a kind of quick lengthening bar, be connected between two hole rings in the bone external fixator, it is characterized in that: include threaded rod, interior bar cover and outer bar cover, described threaded rod from top to bottom is inserted in interior bar cover, described interior bar cover from top to bottom is inserted in outer bar cover, and the lower end of described outer bar cover is provided with the threaded connector that is connected use with the hole ring.
The upper end of described interior bar cover is provided with flanging, and be provided with pressure controller between the upper end of interior bar cover and threaded rod, described pressure controller controls cover by adjusting sleeve, pressure and Compress Spring forms, the upper end of described adjusting sleeve is threaded with threaded rod, the bottom of adjusting sleeve is controlled external threading with pressure and is connected, described pressure is controlled the interior bar that cover is movably set in the flanging downside and is put, on the threaded rod between the flanging that the upper end that described Compress Spring is enclosed within adjusting sleeve and interior bar overlap.
It is uncovered that the medial wall, upper end of described outer bar cover is provided with taper, the lateral wall, upper end of outer bar cover is provided with external thread section, and be provided with lock-on connection between the upper end of outer bar cover and interior bar cover, described lock-on connection is comprised of taper elastic ring and locking nut, described locking nut is by the be threaded upper end of the cover of bar outside of external thread section, described taper elastic ring be inserted in taper uncovered in, be clipped between interior bar cover and outer bar cover, and the fixing of the upper end of taper elastic ring is on the upper end of locking nut.
Can be provided with bar cover pad between the medial wall of the lateral wall, bottom of described interior bar cover and outer bar cover.
Can be provided with union joint on the medial surface of described bar cover pad, described interior bar puts and is provided with the locating hole corresponding with union joint, and bar cover pad is fixed on interior bar and puts by union joint is relative with locating hole.
Described threaded connector can be arranged on the internal thread hole of outer bar cover lower end.
The lower end of described outer bar cover can be provided with multidirectional articulation joint, and described threaded connector is located on multidirectional articulation joint.
Described multidirectional articulation joint can by Connection Block, hinged otic placode, in pin, axle sleeve and bearing pin form, wherein hinged otic placode is arranged on the lower end of outer bar cover, axle sleeve and bearing pin are articulated and connected on hinged otic placode by middle pin, Connection Block is articulated and connected again on bearing pin, and described threaded connector is arranged on Connection Block.
Described threaded connector can be out the internal thread hole on Connection Block.
Compared with prior art the present invention has following characteristics and beneficial effect: adopted that bone external fixator of the present invention is simple in structure, lightweight, cost is low, can regulate and control, flexible operation, can be targetedly, personalized being combined, regulated and controled, greatly improved safety, advance, practicality and the clinical value of bone External technique.
During operation, according to the needs of different cases, will be provided with bone external fixator of the present invention and be placed on orthopedic bone, and fix with draw point, once import after the bone external fixator needs that can meet whole-course treatment.
Adopted bone external fixator of the present invention can make mechanical energy (mechanical environment) and bioenergy (tissue regeneration) have the good compatibility (reasonability of Mechanobiology environment), can meet fracture early implementation strong flexible fastening, later stage fixing, that provide axially mid-term and combined stress stimulates provides balance fixing requirement.
Adopted bone external fixator of the present invention can according to the treatment needs, optional 2～4 are carried out Combination application on the bone external fixator, the shortcoming that the whole system that has overcome existing bone external fixator is cured, manufacturing cost is high, it is expensive to use, medical treatment cost is high.
Adopted bone external fixator of the present invention implement to thread a needle fixing after, can directly carry out reduction (orthopedic) adjustment by maneuver (staff), carry out rapidly preoperative measurement by means of orthopedic dip stick (by Beijing Institute of External Skeletal Fixation Technology's development and production) and the orthopedic chi of lower limb (by Beijing Institute of External Skeletal Fixation Technology's development and production), can guarantee the operative treatment quality, need not use again the computer-aided system to be operated, reduce workload, save time, laborsaving, economize medical care expenses, also for the intellectuality that realizes real meaning, control solid foundation be provided simultaneously.
Adopted each member in bone external fixator of the present invention to compare with existing Combined bone external-fixer, when keeping original member characteristics, carried out again larger improvement and bring new ideas, increased new function, the improvement and bring new ideas of each member is newly promoted the performance of bone external fixator, function is science, advanced person and practical more, has met the needs of multiple case.Specific as follows: 1, the lengthening bar has drawing-off, pressurization function fast, in therapeutic process, according to the treatment requirement, can implement elasticity drawing-off, pressurization, flexible fastening (regulation and control elasticity) and adaptability rigidity by pressure controller and fix.2, the lengthening bar can stretch fast, clockwise or rotate counterclockwise lock-on connection 360 degree, the lengthening bar can increase or shorten fast, solved the difficult problem that the fixing rigidity of bone external fixator can not change, fixed so can require implement the adaptability balance that gap is zero early stage strongly fixes, mid-term, gap was 1～2mm flexible fastening and later stage gap are 3～5mm according to treatment at therapeutic process.3, the lengthening bar is the important component of implementing overall configuration and function combinations fast, can carry out the optimum organization of configuration, increase practicality and the dexterity of configuration, can require to implement drawing-off, pressurization, regulation and control elasticity and adaptability rigidity according to treatment at therapeutic process fixes, embodied highlightedly the bionics function, improve the compatibility of mechanical energy and bioenergy, met the requirement of regeneration reconstruction and control theory, guaranteed 98～100% curative effect.
The present invention has quick-expansion, slowly extend and three kinds of functions of dynamic elasticity drawing-off, there is adjusting operation convenient, configuration is optimized, practical, dexterous characteristics, more importantly, in the overall process for the treatment of, early, in, the difference in later stage is the stage fixedly, under the prerequisite of the repertoire that keeps the bone external fixator, can meet respectively early stage strong fixing, the flexible fastening in mid-term, the later stage balance is the treatment requirement of stage bone fixedly, promote new bone growth, the sclerotin mineralising, realize optimized reconstruction and the actively rehabilitation of bone function, realize healing fully, facilitate management after operation simultaneously, be convenient for measuring.
Adopted the member designs of bone external fixator of the present invention ingenious rationally, the existing relative independence of each member, very strong interchangeability is arranged again, not only but random group becomes various clinical required bone external fixator individuation configuration of the present invention, can also be according to age, position and treatment requirement, the random external fixator that forms the different geometries such as one-sided, trigonometric expression, half-ring and combined type, realized " device turns with border ".
The present invention has carried out new innovation to the mechanics effect of bone external fixator, there is dynamic elasticity drawing-off function, there is the structure of complying with biological requirement, realizing in " device turns with border ", make the bone external fixator bionic boundary of marching toward become possibility, for implementing cybernetics, provide technique guarantee.
The present invention can be connected and fixed by the joint devices such as spherical joint device, damping joint device, self-locking joint device and hole ring, such as combined with hole loopful, hole semi-ring, U-shaped ring etc., has improved the performance of bone external fixator.
The bone external fixator has incorporated the structural element of more Ilizarov external fixator, not only in rationale, there is again new breakthrough the aspects such as apparatus innovation, technical specification, clinical practice and treatment theory, substantially realize theoretical system, apparatus seriation, regularized operation, criterion of therapeutical effect, formed new bone External technique system.
Adopted the treatment applied range of bone external fixator of the present invention: 1, can be according to the treatment requirement, by inherent function and the adjusting device of bone external fixator, for fractures provides the function of the reduction of the fracture and adaptability rigidity; 2, for bone is damaged, the treatment of skin injury and shortening deformity of extremity provides the function of slow prolongation; 3, the treatment for the B&J deformity provides progressively drawing-off orthopaedic function; 4, the comprehensive mechanical function under complex situations, provide the biomechanics adapted with bone and soft tissue regeneration environment.Above-mentioned these specific functions are that other apparatus and Therapeutic Method are not available.
Adopted bone external fixator of the present invention to there is the multiple comprehensive function of bone external fixator: static fixing, dynamically fixing, drawing-off, pressurization, rectification angulation deformity, correct side displacement, rotation deformity and rigidity and control function.In clinical practice, these functions both can be brought into play specific effect, also can play total effect, as:
1, static fixed function: both can implement the fixing of whole-course treatment, such as femoral trochanteric, condyle of femur, the tibial metaphysis fracture, radius far-end fracture, the whole process of the treatments such as articular fracture is fixed, perhaps omnidistance fixing in conjunction with fractures fixing in simple, the implementation phase of again, property is fixed, such as the strong fixedly stage of fracture fixation adaptability rigidity, the stages such as serious splintered fracture damaged with bone is fixing, the early stage fixing and osteotomy of osteotomy orthopaedy extends pre-delay fixing, perhaps can implement fixing (such as both legs intersects fixing) of special circumstances etc.
2, adaptability rigidity of fixation function: in the different phase of fractures, regulation and control by external fixator structure and mechanical property, for union of fracture, new bone mineralising provide strong fixing, axial elasticity is fixed, comprehensive flexible fastening and the different rigidity of fixations such as balance is fixing, to realize the optimized reconstruction of bone function.
3, bone and limb lengthening function: application bone external fixator can extend bone length, as osteotomy slowly extends operation, can realize bone transport and limbs synchronous lengthening.
4, osteotomy orthopaedic function progressively: in osteotomy orthopaedy, during the extension orthopaedy of joint, the drawing-off adjusting device of utilizing external fixator is the drawing-off correction deformity progressively, and as osteotomy, drawing-off rescues that knee joint is inside and outside turns over, and slowly drawing-off is rescued etc.
5, joint drawing-off orthopaedic function: in the situation that osteotomy not, with the bone external fixator, progressively drawing-off is orthopedic, and the arthrogryposis deformity is rescued under the noinvasive condition, as the knee sprung contracture deformity progressively drawing-off rescue, the progressively drawing-off of ankle and foot deformity is rescued etc.
6, the horizontal drawing-off function of bone: the horizontal drawing-off function of bone, refer to that to cut a long bone at the longitudinal axis along tibia fast, application bone external fixator progressively retracts it, and the bone footpath is increased.This art can be used for treating ischemic disease of lower extremity, as vasculitis etc., also can be used for making the bone footpath to increase.
7, skin drawing-off function: the bone external fixator can be implemented the drawing-off of various directions to skin, with used for reparing skin defect and wound surface.Can be used for the various types of skin injury of lower limb.In clinical practice, the less independent use of above-mentioned various functions, be in most cases the use in conjunction of two or more functions.Therefore, the several functions that the present invention has carries out use in conjunction, obtains beyond thought clinical effectiveness.
With traditional extension rod (Chinese patent application that application publication number is CN102860861A), compare, the present invention is use better, specific as follows:
What 1, traditional extension rod adopted is the structure of two-stage nitration bar, there is the problem that dilatability is little, and the present invention has adopted the structure of three sections bars, so tensile elongation has increased a lot (collapsing length is larger) than traditional extension rod, can reach 160mm～350mm, adjusting range is wider, to ankle is orthopedic very large advantage is arranged, and has avoided the drawback of the limited length of traditional extension rod.
2, traditional extension rod is carried while shrinking locking jaw, is easily made the screw thread in locking jaw fasten threaded rod, make threaded rod and bar cover locking on lock sleeve, simultaneously, after traditional extension rod is locked by locking jaw, the fit clearance between threaded rod and bar cover can cause extension rod slight rolling innervation to occur.The present invention has cancelled locking jaw, so there will be stuck problem while having avoided threaded rod and locking jaw flexible, simultaneously, the present invention has designed outer bar cover and the cooperation of interior bar cover gapless is free to slide, and control by lock-on connection the slip that outer bar overlaps and interior bar overlaps, realize fast significantly length adjustment with this, owing to being being free to slide of gapless cooperation between interior bar cover and outer bar cover, so locking is rear without rocking.
3, avoided traditional extension rod inconvenient problem with use.Rigidity controller on traditional extension rod is to place separately, when it withstands locking jaw, could realize rigidity control, adjust complexity during use and lose time, if while not needing the rigidity controller, it must be unloaded, so, while using not isomorphism type, must add to consider, and the present invention has adopted the principle that the rigidity controller is built-in, rename as pressure controller, control cover by the pressure in the rotational pressure controller, can adjust the pressure of the present invention to the art bone, by the adjusting sleeve in the integral-rotation pressure controller, can make to realize flexible fine setting between threaded rod and interior bar cover, so both improved and regulated the speed, guaranteed again the degree of accuracy of adjusting, if while not needing rigidity to control, can directly pressure be controlled to cover and rotate the bosom to adjusting sleeve, Compress Spring is depressed into to the shortest (the inelastic state in Compress Spring place), now pressure controller is inoperative, but the effect of being locked is constant.
4, traditional extension rod is when the processing locking jaw, and difficulty of processing is large, and the finished product rate is low, production cost is high, become the bottleneck that affects product promotion, and the present invention has cancelled locking jaw, reduced difficulty of processing and production cost, improved working (machining) efficiency, the problem of having avoided the processing locking jaw to bring.
5, traditional extension rod all adopts metal material, can affect x-ray fluoroscopy in therapeutic process, and the present invention has all adopted the carbon fiber material except threaded rod, so enlarged the x-ray fluoroscopy scope, more be conducive to diagnose exactly the situation of fracture, and reduced significantly the weight of quick lengthening bar.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is that the master of the embodiment of the present invention one looks schematic diagram.
Fig. 2 is the decomposing schematic representation of the embodiment of the present invention one.
Fig. 3 is the assembling schematic diagram of the embodiment of the present invention one.
Fig. 4 is the schematic diagram of the external thread section on the lateral wall, upper end of lock-on connection and outer bar cover.
Fig. 5 is the structural representation of the embodiment of the present invention one.
Fig. 6 is the enlarged diagram at I place in Fig. 5.
Fig. 7 is the enlarged diagram at II place in Fig. 5.
Fig. 8 is that the master of the embodiment of the present invention two looks schematic diagram.
Fig. 9 is the decomposing schematic representation of the embodiment of the present invention two.
Figure 10 is the structural representation of the embodiment of the present invention two.
Figure 11 is the schematic diagram of having applied the long bone fracture reposition instrument of the embodiment of the present invention two.
Figure 12 is the schematic diagram of having applied the femur ring type triangle synchronous lengthening device of the embodiment of the present invention two.
Figure 13 is the schematic diagram of having applied the coxarthropathy external fixator of the embodiment of the present invention two.
Figure 14 is the orthotic schematic diagram of ankle joint coronalplane osteotomy of having applied the embodiment of the present invention one.
Figure 15 is the schematic diagram of having applied the ankle joint coronalplane drawing-off deformity corrector of the embodiment of the present invention one.
Figure 16 is the orthotic schematic diagram of ankle joint coronalplane compound malformation of having applied the embodiment of the present invention one.
Figure 17 is the orthotic schematic diagram of strephopodia of having applied the embodiment of the present invention one.
Figure 18 is the orthotic schematic diagram of ankle joint multidimensional of having applied the embodiment of the present invention one.
Reference numeral: in 1-threaded rod, 2-bar cover, the outer bar cover of 3-, 4-adjusting sleeve, 5-Compress Spring, 6-pressure control that cover, 7-taper are uncovered, pin, the hinged otic placode of 17-, 18-Connection Block, 19-union joint, 20-locating hole in 8-taper elastic ring, 9-external thread section, 10-locking nut, 11-bar cover pad, 12-threaded connector, 13-flanging, 14-bearing pin, 15-axle sleeve, 16-.
The specific embodiment
Embodiment mono-is referring to shown in Fig. 1-7, this quick lengthening bar, be connected between two hole rings in the bone external fixator, it is characterized in that: include threaded rod 1, interior bar cover 2 and outer bar cover 3, described threaded rod 1 from top to bottom is inserted in interior bar cover 2, described interior bar cover 2 from top to bottom is inserted in outer bar cover 3, and the lower end of described outer bar cover 3 is provided with the threaded connector 12 that is connected use with the hole ring.
In the present embodiment, the lower end of outer bar cover 3 is provided with multidirectional articulation joint, and described threaded connector 12 is located on multidirectional articulation joint.Multidirectional articulation joint by Connection Block 18, hinged otic placode 17, in pin 16, axle sleeve 15 and bearing pin 14 form, wherein hinged otic placode 17 is arranged on the lower end of outer bar cover 3, axle sleeve 15 and bearing pin 14 are articulated and connected on hinged otic placode 17 by middle pin 16, Connection Block 18 is articulated and connected again on bearing pin 14, described threaded connector 12 is arranged on Connection Block 18, and threaded connector 12 is out the internal thread hole on Connection Block 18.Certainly, in other embodiments, threaded connector 12 can be also the thing of external thread rod and so on.
The upper end of described interior bar cover 2 is provided with flanging 13, and be provided with pressure controller between the upper end of interior bar cover 2 and threaded rod 1, described pressure controller controls cover 6 by adjusting sleeve 4, pressure and Compress Spring 5 forms, the upper end of described adjusting sleeve 4 is threaded with threaded rod 1, the bottom of adjusting sleeve 4 is controlled cover 6 with pressure and is threaded, described pressure is controlled on the interior bars cover 2 that cover 6 is movably set in flanging 13 downsides, and the upper end that described Compress Spring 5 is enclosed within adjusting sleeve 4 and interior bar overlap on the threaded rod 1 between 2 flanging 13.
The medial wall, upper end of described outer bar cover 3 is provided with taper uncovered 7, the lateral wall, upper end of outer bar cover 3 is provided with external thread section 9, and be provided with lock-on connection between the upper end of outer bar cover 3 and interior bar cover 2, described lock-on connection is comprised of taper elastic ring 8 and locking nut 10, described taper elastic ring 8 is inserted in taper uncovered 7, is clipped between interior bar cover 2 and outer bar cover 3, and the upper end of taper elastic ring 8 fixes on the upper end of locking nut 10, described locking nut 10 is by external thread section 9 upper end of bar cover 3 outside that is threaded.
Be provided with bar cover pad 11 between the medial wall of the lateral wall, bottom of described interior bar cover 2 and outer bar cover 3, the medial surface of bar cover pad 11 is provided with union joint 19, described interior bar cover 2 is provided with the locating hole corresponding with union joint 19 20, and bar cover pad 11 is fixed on interior bar cover 2 by union joint 19 is relative with locating hole 20.
The assembling process of embodiment mono-: 1, threaded rod and adjusting sleeve link and connect by spiral shell, and Compress Spring is penetrated to threaded rod, penetrate subsequently interior bar cover, then pressure are controlled to cover and penetrate interior bar cover, suppress gently Compress Spring, pressure is controlled to cover and be connected with adjusting sleeve; 2, the taper elastic ring is put into to the locking nut the inside, then penetrate interior bar cover, again two bar cover pads being buckled into to interior bar puts, interior bar cover is inserted to outer bar cover simultaneously, the rotational lock nut, locking nut is connected with outer bar cover, now loosens locking nut, can be free to slide between interior bar cover and outer bar overlap, and tighten locking nut, can lock interior bar cover and outer bar cover.3, bearing pin is put into axle sleeve and is connected with Connection Block 18, and then bearing pin is connected with outer bar cover by middle pin.
Embodiment bis-is referring to Fig. 8-10, with the difference of embodiment mono-, be, the lower end of outer bar cover 3 does not have multidirectional articulation joint, and described threaded connector 12 is the internal thread holes (the present embodiment is that a nut has been welded in the lower end of the direct cover of bar outside 3) that are set directly at outer bar cover lower end.Certainly, in other embodiments, threaded connector 12 can be also the thing of external thread rod and so on.
The present invention and various joints device link aspect and traditional identical, coordinate kind more.Its application be embodied in multidimensional orthopedic on.Referring to Figure 14-18, described embodiment mono-, except being applied in Taylor's space frame, also can be applicable in other bone anchors such as ankle joint coronalplane osteotomy orthosis, ankle joint coronalplane drawing-off deformity corrector, ankle joint coronalplane compound malformation orthosis, strephopodia orthosis, ankle joint multidimensional orthosis.Referring to Figure 11-13, described embodiment bis-, except being applied in Taylor's space frame, also can be applicable in other bone anchors such as fracture reposition instrument, femur ring type triangle synchronous lengthening device, the dynamic external fixator of hip joint.
The present invention has all adopted the carbon fiber material except threaded rod.
The effect of the lock-on connection in the present invention is: make interior bar cover and outer bar overlap rapid drawing-off and locking, make interior bar cover and the locking at an arbitrary position of outer bar cover.Specifically, the medial wall, upper end of described exactly outer bar cover is provided with taper uncovered (the medial wall, upper end of outer bar cover is the pyramidal structure that the diameter of axle diminishes gradually) from top to bottom, during locking nut in tightening lock-on connection, taper is uncovered can be compressed the taper elastic ring, make bar cover in the locking of taper elastic ring, now interior bar overlaps and outer bar cover locking, when unscrewing locking nut, the reinstatement of taper elastic ring, make interior bar cover external bar cover free-extension mutually.
Treatment stage in early days, when operative reduction, in the time of being provided with bone external fixator of the present invention and being fixed on the art bone, locking nut in the present invention is unclamped, make the present invention in the quick adjustable state of length (but interior bar cover and outer bar cover relative sliding), simultaneously quick lengthening bar is in free movement state under the effect of various joints device, and bone external fixator now can carry out three-dimensional adjustment neatly, carries out drawing-off, rotation, pressurizes, resets.After the art bone resets substantially, by the joint device locking in the bone external fixator, carry out the micro stretching contracting (adjusting sleeve can be controlled the relative position of interior bar cover and threaded rod) of threaded rod by the adjusting sleeve in the rotational pressure controller, the reduction of the fracture is finely tuned.After the adjustment of art bone resets, pressure in pressure controller can be controlled to cover and rotate the bosom to adjusting sleeve, now Compress Spring is compressed into the shortest, pressure controller inoperative (Compress Spring is inoperative), now the present invention will fully fix the art bone fast, for union of fracture, new bone mineralising provide strong fixing, guarantee that the knitting initial stage is desired strong fixing, avoided inaccurate due to the stable poor dislocation caused, angulation, the problem such as heal bad.
When the mid-term of knitting, need to be to the flexible fastening that the art bone provides axially and combined stress stimulates, pressure is controlled to the cover rotation to be unclamped, make Compress Spring in the elastic force state, now under the effect of the Compress Spring in pressure controller, the present invention can have certain telescopic resilience (threaded rod is connected with interior bar cover elasticity), control cover by rotational pressure, can regulate the elastic force of Compress Spring, realize thus adjusting and control elastic force of the present invention, control the purpose of bone external fixator to the pressure size of art bone thereby reach, now, can control the bone external fixator, implement drawing-off, pressurization function, drawing-off pressurization scope 0～200 handkerchief (unit) of adjusting sleeve in the present invention to knochenbruch.Clockwise rotate adjusting sleeve 360 degree, increase 1mm, rotate counterclockwise and shorten 1mm, this regulation and control, the flexible fastening rigidity of the best combined stress stimulation of knitting mid-term stage is provided, has given full play to the adaptability of bone counter stress, the growth of capable of regulating bone and absorption, promote the process of union of fracture, complete the optimized reconstruction of bone function.
The anaphase stage: being provided with bone external fixator of the present invention will provide balance to fix, under the prerequisite of the function that keeps the bone external fixator, can reduce fast at random the quantity of the present invention on the bone external fixator, the support strength that had so both kept the bone external fixator, alleviated again the weight of bone external fixator, and facilitate management after operation, be beneficial to positive rehabilitation.
Claims (7)
1. a quick lengthening bar, be connected between two hole rings in the bone external fixator, it is characterized in that: include threaded rod (1), interior bar cover (2) and outer bar cover (3), described threaded rod (1) from top to bottom is inserted in interior bar cover (2), described interior bar cover (2) from top to bottom is inserted in outer bar cover (3), and the lower end of described outer bar cover (3) is provided with the threaded connector (12) that is connected use with the hole ring;
The upper end of described interior bar cover (2) is provided with flanging (13), and be provided with pressure controller between the upper end of interior bar cover (2) and threaded rod (1), described pressure controller is by adjusting sleeve (4), pressure controls cover (6) and Compress Spring (5) forms, the upper end of described adjusting sleeve (4) is threaded with threaded rod (1), the bottom of adjusting sleeve (4) is controlled cover (6) with pressure and is threaded, described pressure is controlled cover (6) and is movably set on the interior bar cover (2) of flanging (13) downside, described Compress Spring (5) is enclosed within on the threaded rod (1) between the flanging (13) of the upper end of adjusting sleeve (4) and interior bar cover (2),
The medial wall, upper end of described outer bar cover (3) is provided with taper uncovered (7), the lateral wall, upper end of outer bar cover (3) is provided with external thread section (9), and be provided with lock-on connection between the upper end of outer bar cover (3) and interior bar cover (2), described lock-on connection is comprised of taper elastic ring (8) and locking nut (10), described locking nut (10) is by external thread section (9) upper end of bar cover (3) outside that is threaded, described taper elastic ring (8) is inserted in taper uncovered (7), be clipped between interior bar cover (2) and outer bar cover (3), and the upper end of taper elastic ring (8) fixes on the upper end of locking nut (10).
2. quick lengthening bar according to claim 1, is characterized in that: be provided with bar cover pad (11) between the medial wall of the lateral wall, bottom of described interior bar cover (2) and outer bar cover (3).
3. quick lengthening bar according to claim 2, it is characterized in that: the medial surface of described bar cover pad (11) is provided with union joint (19), described interior bar cover (2) is provided with the locating hole (20) corresponding with union joint (19), and bar cover pad (11) is fixed on interior bar cover (2) by union joint (19) is relative with locating hole (20).
4. quick lengthening bar according to claim 1 is characterized in that: described threaded connector (12) is arranged on the internal thread hole of outer bar cover lower end.
5. quick lengthening bar according to claim 1, it is characterized in that: the lower end of described outer bar cover (3) is provided with multidirectional articulation joint, and described threaded connector (12) is located on multidirectional articulation joint.
6. quick lengthening bar according to claim 5, it is characterized in that: described multidirectional articulation joint by Connection Block (18), hinged otic placode (17), in pin (16), axle sleeve (15) and bearing pin (14) form, wherein hinged otic placode (17) is arranged on the lower end of outer bar cover (3), axle sleeve (15) and bearing pin (14) are articulated and connected on hinged otic placode (17) by middle pin (16), Connection Block (18) is articulated and connected again upper at bearing pin (14), and described threaded connector (12) is arranged on Connection Block (18).
7. quick lengthening bar according to claim 6, it is characterized in that: described threaded connector (12) is out the internal thread hole on Connection Block (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310400851.0A CN103445834B (en) | 2013-09-06 | 2013-09-06 | Fast drawing extension rod |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310400851.0A CN103445834B (en) | 2013-09-06 | 2013-09-06 | Fast drawing extension rod |
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| CN103445834A true CN103445834A (en) | 2013-12-18 |
| CN103445834B CN103445834B (en) | 2015-05-13 |
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| CN201310400851.0A Expired - Fee Related CN103445834B (en) | 2013-09-06 | 2013-09-06 | Fast drawing extension rod |
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| CN106308978A (en) * | 2016-08-17 | 2017-01-11 | 董谢平 | Harbin hip device and use method thereof |
| CN106371462A (en) * | 2015-07-20 | 2017-02-01 | 北京卫星环境工程研究所 | Spatial position adjusting device for heating elements for vacuum thermal testing |
| CN106859750A (en) * | 2017-03-23 | 2017-06-20 | 河北工业大学 | A kind of parallel connection type exter-nal fixer and its application process |
| CN108158640A (en) * | 2018-01-17 | 2018-06-15 | 湖北理工学院 | Self-adjustable outer fixed bone elongation pad |
| CN114469293A (en) * | 2016-07-14 | 2022-05-13 | Amdt控股公司 | External bone fixation system |
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| US20080021451A1 (en) * | 2006-04-20 | 2008-01-24 | Millennium Medical Technologies, Inc. | External Fixator |
| US20100331840A1 (en) * | 2008-02-12 | 2010-12-30 | Texas Scottish Rite Hospital For Children | Fast adjust external fixation connection rod |
| CN202365897U (en) * | 2011-10-27 | 2012-08-08 | 天津市新中医疗器械有限公司 | Three-dimensional space external fixation frame |
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| CN106371462A (en) * | 2015-07-20 | 2017-02-01 | 北京卫星环境工程研究所 | Spatial position adjusting device for heating elements for vacuum thermal testing |
| CN114469293A (en) * | 2016-07-14 | 2022-05-13 | Amdt控股公司 | External bone fixation system |
| CN106308978A (en) * | 2016-08-17 | 2017-01-11 | 董谢平 | Harbin hip device and use method thereof |
| CN106308978B (en) * | 2016-08-17 | 2017-10-20 | 董谢平 | A kind of bone within bone Conveyer and its application method |
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| CN108158640A (en) * | 2018-01-17 | 2018-06-15 | 湖北理工学院 | Self-adjustable outer fixed bone elongation pad |
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| CN103445834B (en) | 2015-05-13 |
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