CN1115229A - Vertebra retro position multi-shaft variable correction fixator - Google Patents
Vertebra retro position multi-shaft variable correction fixator Download PDFInfo
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- CN1115229A CN1115229A CN 94108212 CN94108212A CN1115229A CN 1115229 A CN1115229 A CN 1115229A CN 94108212 CN94108212 CN 94108212 CN 94108212 A CN94108212 A CN 94108212A CN 1115229 A CN1115229 A CN 1115229A
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Abstract
The fixator for correction of vertebrae features that connecting plate is arranged between vertebra stem nails at both side of vertebral body or processus transversus hook and vertebra stem hook and a main rod cooperating with sleeve tube is set up on central seat of connecting plate. Several vertebral bodies to be corrected are all installed said connecting plates and the ends of vertebra stem nails or hook of two adjacent vertebral bodies are passed through by screw bolt. Turning nut can regulate the distance between two vertebral bodies and turning the main rod can regulate curved columna vertebralis.
Description
The present invention relates to a kind of vertebra retro position multi-shaft variable correction fixator, it mainly is the holder that gives corrective therapy at the pathological changes that scoliosis or abnormal bending such as anteflexion or vertebral body slippage disease are caused, and has easy and simple to handle and can reach the effect of corrective therapy really.
The intravital vertebra of people; promptly being joined to arranging by a succession of vertebrae forms, and is separated by the cartilage intervertebral disc between vertebral body, and its function has the protection spinal cord and supports trunk; and connecting shoulder belt and basin band with terminal as many muscle, tool transmits the function of gravity at human body walking and when standing.Because the recurrent pathological changes of human vertebra has " scoliosis " or " vertebral body slippage " etc., the disease of being somebody's turn to do " scoliosis " is a kind of deformity of spine, can grow the obviously not isometric or degenerative spondylitis of asymmetric, two lower limb owing to neural, muscle factor or vertebral body, even agnogenio etc. cause spinal column askew partially to the side; " vertebral body slippage " disease that other plants, because of joint lumbar vertebra slippage forward above adjacent lumbar vertebra or Zhi bone, above-mentioned disease all can utilize various surgical operations to give corrective therapy in case of necessity, otherwise because extruding improperly such as the lateral bending of spinal column or vertebral body slippage all may cause the nervous system pressurized to cause pathological changes, and the pathological changes of above-mentioned spinal column can cooperate the use of correcting fixer again by the surgical correction operation, and reach the localized effect of certain rectification, to improve the pathological changes of this kind vertebra.
Traditionally, treatment vertebra lateral bending is with the designed steel pole of Harrington, the recessed side of scoliosis be fixed on go up most or under the vertebral plate of vertebra, the strength of backing down with preface gradually reaches the purpose of correcting scoliosis again, but this kind method only reaches a left side, the rectification of right both sides, side is corrected before and after can reaching reluctantly, it is the rectification of so-called dual space, other has the designed steel pole of Luque to add steel wire, also can only reach the rectification of dual space, though C recently-D vertebra aggregate reaches tridimensional rectification effect via the rectification strength that steel pole reverses and have, but it focuses on one-sided rectification, and probably strength has the anxiety of distributing inequality.
Main purpose of the present invention is: a kind of vertebra retro position multi-shaft variable correction fixator is provided, it is respectively to establish implantation one vertebra stem nail at two side vertebra stem places of the corrigent vertebra joint of vertebral column lesion desire to fix, and laterally connects the vertebra stem nail that same vertebra saves both sides with connecting plate again.The termination of vertebra stem nail is provided with breach can be inserted in the adjacent vertebra stem nail of screw rod connection, and prevents slippage with the nut embedding breach that is enclosed within advance on the screw rod.The nut of synchronous more equidirectional rotation homonymy, making the vertebra stem nail of homonymy is central point with middle vertebra respectively, the action that struts or compress is done in both sides up and down, so, can do the rectification of partly progressive dual space to the vertebra of distortion.After correcting to a certain degree, become the corrigent physiology arc of institute's desire (the back of anteflexion and thoracic vertebra as thoracic vertebra bent) with the mobile jib engage flex again, after pushing the central connecting support of connecting plate, be inserted in sleeve and prevent slippage, but still have the function of rotation, with the main shaft of rotating band physiologic radian bending, make the spinal column of distortion return to physiologic radian at last as far as possible, with the incremental rectification in this three-dimensional space, reach the purpose of treatment.
A further object of the present invention is: a kind of vertebra retro position multi-shaft variable correction fixator is provided, its at lumbar vertebra except that using vertebra stem nail through the vertebra stem fixedly the vertebral body, in some cases (such as osteoporotic conditions or other specific demands time) also can increase and use the vertebral plate hook to be fixed in the vertebral plate place, cooperate again with the vertebra stem nail that saves homonymy, utilize screw nut to be coupled to one group of button and be fixed on vertebra stem and the vertebral plate, make the fixing more firm rectification of lumbar vertebra stronger.
Another purpose of the present invention is: a kind of vertebra retro position multi-shaft variable correction fixator is provided, when the thoracic vertebra place that it is used in more than the protelum, collude and transverse process colludes respectively vertebra stem and the transverse process that button is fixed in vertebral body with the vertebra stem, the formed short slot of connecting plate two sides then can collude set slide block location for the vertebra stem, screw rod can be arranged in the sleeve that the vertebra stem colludes the trepanning place again, cooperate the adjustment tube of tool height adjustment to penetrate again, and the pedestal that colludes of transverse process penetrate and spiral shell is established a nut to reach the location, this moment transverse process is colluded and the vertebra stem colludes colludes plate and fasten to reach location easy and simple to handle relatively, between each connecting plate, can go here and there again and be provided with mobile jib.
The invention provides a kind of vertebra retro position multi-shaft variable correction fixator, wherein:
Two sides of connecting plate are respectively equipped with short slot, and central authorities are formed with the connecting support of evagination, and this connecting support is provided with trepanning and the end run through and forms the breach that communicates with trepanning, in trepanning pertusate sleeve can be installed, and mobile jib can be inserted the perforation internal fixation,
The screw rod body that the vertebra stem is followed closely an end penetrates through the vertebra stem and is fixed on the vertebral body, the termination of end then is provided with perforation and reaches the breach that communicates with perforation in addition, in between termination and screw rod body, form the threaded portion, in the proximal head place and be positioned at opposite position and be formed with plane-parallel fit portion, this fit portion can be placed on the short slot place of connecting plate, cooperate screwing togather of hold-doun nut and threaded portion to urge again to reach the fixing of the two
Can insert screw rod again between the vertebra stem nail of adjacent vertebrae, the adjustment nut on the screw rod can be adjusted the spacing of adjacent two vertebra stems nail after displacement.
Described vertebra retro position multi-shaft variable correction fixator, wherein: the short slot edge of connecting plate two sides is formed with the arc edge, is formed with arc body and arc piece respectively with the connect described vertebra stem nail termination and the hold-doun nut place of synapsis of this arc edge.
Described vertebra retro position multi-shaft variable correction fixator, wherein: perforation two sides of vertebra stem nail termination are formed with concave arc, and spiral shell is located on the screw rod and the adjustment nut that is positioned at vertebra stem nail termination two sides cooperates localized arc piece in being formed with this concave arc opposite position with concave arc.
Described vertebra retro position multi-shaft variable correction fixator, wherein: the same joint vertebra place that vertebra stem nail is arranged in implantation, cooperation is equipped with vertebral plate and colludes, the pedestal that this vertebral plate colludes is provided with vertical through hole, the oblique arc raker that is formed with in addition, and be formed with the upwards hook part of bending in the end, the through hole that vertebral plate can be colluded is placed on the screw rod and cooperates adjustment nut spiral shell solid, and this moment, the hook part of two rakers just can be detained the vertebral plate place that is fixed in vertebra respectively.
The invention provides a kind of vertebra retro position multi-shaft variable correction fixator, wherein: two sides at connecting plate are respectively equipped with short slot, and central authorities are formed with the connecting support of evagination, this connecting support is provided with trepanning and the end run through and forms the breach that communicates with trepanning, in trepanning, pertusate sleeve can be installed, mobile jib can be inserted the perforation internal fixation
The vertebra stem colludes Yu Yiduan and is formed with the plate that colludes that is the U type, end then is formed with pedestal in addition, and the two is that a thickness is less and can insert slide block in the connecting plate short slot, trepanning and end that this pedestal is provided with taper are formed with breach, end face in trepanning is formed with dimple, and this trepanning can supply telescopic inserting, and sleeve is provided with perforation, and be provided with screw and run through wherein
The end that transverse process colludes is formed with the plate that colludes of downward bending, the pedestal of other end is provided with perforation and nose end is formed with the arc edge, and in the perforation side be provided with breach, can between the pedestal that transverse process colludes and the vertebra stem colludes, be equipped with and adjust tube, one screw rod can be inserted in the perforation that transverse process colludes and run through and be adjusted tube and sleeve, be located on the screw rod with the nut spiral shell that is formed with the arc piece again and press on the pedestal place that transverse process colludes, another nut then spiral shell is located at location, telescopic below
Make the two relative plates that collude to detain transverse process and the inferior articular process place that is fixed in vertebra and be positioned on the screw rod.
Described vertebra retro position multi-shaft variable correction fixator, wherein: on the short slot face of connecting plate both sides, form vittate stitching surface, insert the vertebra stem and collude the retardance face that is formed with longitudinal stripe on the tube face of sleeve one side in the pedestal trepanning, when sleeve is inserted trepanning, engage the location mutually with retardance face by stitching surface.
Described vertebra retro position multi-shaft variable correction fixator wherein is formed with on the pedestal that the vertebra stem colludes for adjusting the localized dimple of tube.
Because particular design of the present invention will have following several characteristics:
1. because connecting plate is in conjunction with penetrating through the vertebra stem in the intravital vertebra stem of vertebra nail, only need be positioned at the mobile jib that connecting support is suitable radian in turn, can be really with each spinal correction to the appropriate location.
2. because vertebra stem nail is placed on the set short slot place of connecting plate two sides with fit portion, and its threaded portion is provided with hold-doun nut, and the arc body that utilizes its termination and the arc piece of hold-doun nut be resisted against the arc edge place of short slot respectively, so connecting plate and vertebra stem nail are fixed really.
3. because perforation place of each vertebra stem nail can be provided with screw rod, and the adjustment nut that spiral shell is located on the screw rod is positioned at the concave arc place of termination with its arc piece, can push two vertebra stems nail reaching adjustment distance therebetween when turn, and then reach the spacing of adjusting between two vertebras.
4. utilize vertebral plate collude with implantation vertebra in the cooperating of vertebra stem nail, can strengthen this vertebra and the vertebra stem fixed effect between following closely.
5. the set vertebra stem of connecting plate two sides of the present invention colludes and transverse process to collude be that the phase make-up is fixed on the vertebra, can sting to penetrate vertebra and can be located by connecting on the plate and correct, will be applicable on the less vertebra piece of vertebral column upper volume.
6. utilize the installation of the adjustment tube of differing heights, can make the above vertebra piece of thoracic vertebra protelum, even there is the different volumes size still can suitably detain fixed bit.
7. owing to be to engage mutually with being positioned between the sleeve that the vertebra stem colludes on the connecting plate, can make the two unlikely generation lateral displacement with stitching surface and retardance face with striped.
Vertebra retro position multi-shaft variable correction fixator provided by the present invention can be corrected the vertebral column pathological changes according to actual needs really, simultaneously can select different fixed forms according to the different position of vertebral column, and can adjust its corrigent deflection according to the patient's body situation, desired practicality effect when unitary construction can be reached design really.
Further specify architectural feature of the present invention and purpose below in conjunction with accompanying drawing.
Brief Description Of Drawings:
Fig. 1 is the exploded perspective view of a preferred embodiment of the present invention.
Fig. 2 is the sectional elevation of a preferred embodiment of the present invention after installing.
Fig. 3 is the schematic rear view of a preferred embodiment of the present invention after installing.
Fig. 4 is the sketch map before a preferred embodiment of the present invention spine correcting.
Fig. 5 is the sketch map behind a preferred embodiment of the present invention spine correcting.
Fig. 6 is the part sketch map before a preferred embodiment of the present invention spine correcting.
Fig. 7 colludes vertical view after the installation for a preferred embodiment of the present invention vertebral plate.
Fig. 8 colludes rearview after the installation for a preferred embodiment of the present invention vertebral plate among Fig. 7.
Fig. 9 colludes the exploded view that colludes with transverse process for another preferred embodiment vertebra stem of the present invention.
Figure 10 is the top view after another preferred embodiment transverse process of the present invention colludes installation.
The scheme of installation that Figure 11 colludes for another preferred embodiment vertebra stem of the present invention.
Figure 12 colludes combination back sketch map for another preferred embodiment vertebra stem of the present invention colludes with transverse process.
Figure 13 is the sketch map before another preferred embodiment spine correcting of the present invention.
Figure 14 is the sketch map behind another preferred embodiment spine correcting of the present invention.
Referring to shown in Figure 1, structure of the present invention includes connecting plate 10, sleeve 20, mobile jib 35, vertebra stem nail 40 and screw rod 30 etc., wherein connecting plate 10 is the longitudinal bodies of a summary tool arcuation, and central authorities are provided with outwards outstanding connecting support 12, this connecting support 12 is formed with the trepanning 122 that vertically runs through, the one end is designed to the taper hole of less internal diameter, place, near again outer end then is provided with breach 121 and communicates with trepanning 122, two long side places of aforementioned connecting plate 10 are provided with the short slot 11 that laterally runs through respectively, two side places of this short slot 11 are opening-like, and the front and back side of short slot 11 then is formed with the arc edge 111 of suitable radian.
The vertebra stem is followed closely the termination 41 that 40 1 ends are column, end then is the threaded body of rod 45 of design in addition, can penetrate in the vertebral body through the vertebra stem, and between the termination 41 and the body of rod, be provided with the threaded portion 43 of one section suitable distance, the external diameter of this threaded portion 43 is bigger than the external diameter at body of rod place, again in the proximal head 41 1 end places of this threaded portion 43 and be positioned at its opposite position and be formed with plane-parallel fit portion 431, the thickness of fit portion 431 is slightly less than the width of connecting plate 10 short slots 11, so that vertebra stem nail 40 can its fit portion 431 be inserted short slot 11 places, and make in the termination 41 contact or do suitable displacement with the fit portion formed arc body 44 of 431 adjacents with arc edge 111, moreover, termination 41 is provided with the perforation 42 that vertically runs through and is formed with concave arc 421 in perforation 42 1 ends, the breach 422 of side end face then communicates with perforation 42, and this perforation 42 is perpendicular with the plane of fit portion 431.
Cooperation is referring to shown in Fig. 2 and 3, and aforementioned mobile jib 35 can penetrate in the perforation 21 of sleeve 20 and with screw 22 and be fixed, and this sleeve 20 can be placed on the location, trepanning 122 places of connecting plate 10; Vertebra stem nail 40 is short slot 11 places that are placed through connecting plate 10 with its fit portion 431 again, and its arc body 44 contacts with arc edge 111, in addition but 43 place's spiral shells are provided with the hold-doun nut 401 of an end tool arc piece 402 in the threaded portion, so that vertebra stem nail 40 can combine fixing with connecting plate 10 really, perforation 42 places of aforementioned vertebra stem nail 40 can be disposed by breach 422 for screw rod 30, but spiral shell is provided with the adjustment nut 31 that is oppositely arranged on the screw rod 30, be about to adjust concave arc 421 places that the set arc piece 311 of nut 31 1 ends is relatively arranged on vertebra stem nail 40, follow closely adjustment nut 31 packings at 40 2 side places and fix with the combination that reaches the two by being located on the screw rod 30 and being positioned at the vertebra stem.
When the present invention uses in reality, be to select the correcting fixer installation site according to the position of human vertebra post pathological changes, for example be to do explanation for an embodiment wherein shown in Fig. 2 and 3 with the rectification at lumbar vertebra place, the vertebral column of human body is to be connected to form by number joint vertebra 61, vertebral body 64 rear sides of each vertebra 61 are formed with two transverse process 62 and therebetween spinous process 63, are formed with the vertebral foramen 65 that can supply spinal cord to run through in aforementioned vertebral body 64, two transverse process 62, vertebral plate 66 and 63 of spinous process.When actual installation the present invention is on each joint vertebra 61 of vertebral column, its installation procedure is all identical, promptly at first the spinous process 63 on each vertebra 61 is removed, again vertebra stem nail 40 is implanted vertebral body 64 by vertebra 61 both sides through vertebra stem 67 respectively, be inserted in the fit portion 431 of vertebra stem nail 40 again with connecting plate 10 2 side short slots 11, because the fit portion 431 of vertebra stem nail 40 is positioned at short slot 11 places, but turn hold-doun nut 401 is forced to connecting plate 10 places, to reach respectively that vertebra stem nail 40 is fixing with connecting plate 10.
Moreover, because pathological changes vertebral column 60 needs all to implant on corrigent each vertebra 61 vertebra stem nail 40 is arranged, connect two side vertebra stems nail 40 with connecting plate 10 again, need the equal three-dimensional space of corrigent vertebra solid to impose rectification strength but make to each joint, cooperation is referring to shown in Fig. 2,4, when connecting plate 10 connect finish after, be inserted in the vertebra stem with screw rod 30 again and follow closely in the breach 422 of 40 terminations 41, combine with concave arc 421 to reach with the arc piece 311 of adjusting nut 31 again and prevent the slippage purpose.Then again to upper and lower adjustment nut 31 synchronization control, then can utilize strutting of vertebra stem nail 40 or compress and do the rectification (as shown in Figure 4) of preliminary dual space adjacent vertebra 61.After waiting to correct to a certain degree, the mobile jib 35 that is provided with the embossing lines can be according to the distortion radian of residue, after cooperating the corrigent physiologic radian of desire to bend to a specific arc, repress is gone into the connecting support 12 of connecting plate 10, after treating that sleeve 20 pushes trepanning 122, mobile jib 35 promptly not again slippage go out connecting support 12, but mobile jib 35 is still possessed spinfunction.Utilize rotation to bend to the mobile jib 35 of specific arc in advance, make the vertebral column 60 of distortion return to the normal physiological radian as far as possible, and then reach three-dimensional space rectification effect (correct to by Fig. 4 shown in Figure 5).Screw rod 30 is incremental complementary with the rectification strength of mobile jib 35.Owing to this rectification deflection partly must be decided according to patient's the health and the bending of scoliosis pathological changes thereof, when also treating even that corrigent spinal curvature degree or angle are excessive, then only can correct its vertebral column as far as possible near the normal position according to the actual body situation; Owing to the part spacing (being adjusted to shown in Fig. 3) that also can adjust simultaneously 61 on each vertebra after the rectification of finishing scoliosis, make it can not cause abnormal extruding again to nervous system by Fig. 6.
The present invention also can have vertebra 61 places of vertebra stem nail in implantation again, cooperate and with joint homonymy place vertebral plate to be installed and to collude 90 and overlap and consolidate, has the firm effect that reaches preferable, cooperation is referring to Fig. 7 and shown in Figure 8, its structure is that two sides at connecting plate 10 are separately installed with implantable vertebra stem nail 40 in vertebra 61, and run through respectively on connecting plate 10 and the two side vertebra stems nail 40 and be provided with mobile jib 35 and screw rod 30, and colluding 90 pedestal 91, vertebral plate is provided with vertical through hole, the oblique in addition hook part 93 that is formed with arc raker 92 and is formed with the bending that makes progress in the end, vertebral plate can be colluded 90 through hole is placed on the screw rod 30 and cooperates that to adjust nut 31 spiral shells solid, this moment, the hook part 93 of two rakers 92 just can be detained vertebral plate 66 places that are fixed in vertebra 61 respectively, so design can make be positioned at the vertebra stem nail 40 of joint homonymy and vertebral plate collude 90 all simultaneously vertebral body is detained solid, to strengthen the fastening force of vertebra stem nail to the vertebra vertebral body.
Referring again to Fig. 9 and shown in Figure 10, during vertebra piece more than the present invention is used in the less thoracic vertebra protelum of volume, because the vertebra piece block volume more than the thoracic vertebra protelum partly is less and thickness is also less, so being not suitable for running through fixed mode with vertebra stem nail 40 corrects, otherwise might cause the vertebra stem nail of being implanted 40 to destroy the thoracic vertebra block, so colluding 50 and one transverse process with a vertebra stem in another embodiment of the present invention colludes 70 and fixes the vertebra piece, and with the connecting plate 10 incompatible corrigent effect that provides that matches, duplicating in connecting plate 10 that is adopted among the embodiment shown in the figure and the previous embodiment, this connecting plate 10 is the longitudinal bodies of a summary tool arcuation, and central authorities are provided with outwards outstanding connecting support 12, this connecting support 12 is formed with the trepanning 122 that vertically runs through, place, near again outer end then is provided with breach 121 and communicates with trepanning 122, two long side places of aforementioned connecting plate 10 are provided with the short slot 11 that laterally runs through respectively, two side places of this short slot 11 are opening-like, and be formed with the stitching surface 13 of tool longitudinal stripe on the plate face, this connecting support 12 can be installed wherein for sleeve 20, and mobile jib 35 can penetrate in the sleeve 20 and with screw 22 and fixed.
The vertebra stem collude 50 in an end be formed be the U type collude plate 55, end then is formed with pedestal 51 in addition, and the two then is that a thickness is less and can insert slide block 54 in the short slot 11, trepanning 52 and end that this pedestal 51 is provided with taper are formed with breach 56, end face in trepanning 52 is formed with dimple 53, aforesaid trepanning 52 can be inserted for sleeve 80, this sleeve 80 is provided with perforation 81, and be provided with screw 82 and run through wherein, on the tube face of opposite side, be formed with the retardance face 83 of longitudinal stripe, when sleeve 80 is inserted trepanning 52, engage the location mutually with retardance face 83 by vittate stitching surface 13.
What transverse process colluded that an end of 70 is formed with downward bending again colludes plate 73, the pedestal 71 of other end is provided with perforation 72 and nose end is formed with arc edge 75, and in the perforation 72 sides be provided with breach 74, can in transverse process collude 70 and the vertebra stem collude 50 71,51 of pedestals and be equipped with and adjust tube 33, one screw rod 30 can be inserted transverse process and be colluded in 70 the perforation 72 and run through and adjust tube 33 and sleeve 80, be located on the screw rod 30 with nut 31 spiral shells that are formed with arc piece 311 again and press on transverse process and collude 70 pedestal 71 places, 32 spiral shells of another nut are located at the location, below of sleeve 80.
Cooperate Figure 10 and shown in Figure 11 again, when reality is used, be that the present invention is installed on vertebra 61 places specific on the vertebral column 60 of pathological changes, in each side the vertebra stem is set earlier and colludes 50, collude plate 55 with it and make progress hook in inferior articular process 68 places of vertebra 61, and collude the lower edge that breach that plate 55 is the U type just in time withstands vertebra stem 67, treat both sides vertebra stem collude 50 be provided with after, again the spinous process 63 at each vertebra 61 rear is removed, so that connecting plate 10 is placed vertebra piece back, and connect both sides vertebra stems with connecting plate 10 and collude 50, the transverse process that other is positioned at the top colludes 70, collude plate 73 downward buttons with it and be fixed in transverse process 62 places, rotary nut 31 again, 32 and adjust transverse process collude 70 and the vertebra stem collude 50 position, with reach this vertebra 61 locate up and down just can be subjected to transverse process collude 70 and the vertebra stem collude 50 formed spaces and detain solid (cooperation) referring to shown in Figure 12; If the external form of different again builds or vertebra 61 or when varying in size, the adjustment tube 33 of replaceable differing heights colludes the vertebra 61 that 50 formed spaces can be used for detaining solid different volumes size so that transverse process colludes 70 with the vertebra stem.
Referring again to Figure 13 and shown in Figure 14, the present invention is when adjusting, wherein mode of operation is identical with previous embodiment, at first be to adjust the nut 31 that is positioned on the screw rod 30,32 so that each two adjacent vertebra 61 positions changed, promptly making two adjacent vertebras 61 carry out preliminary dual space in the mode of compressing or strut corrects, after waiting to correct to a certain degree, again with the distortion radian of mobile jib 35 according to residue, after cooperating the corrigent physiologic radian of desire to bend to certain radian, be installed on again in the connecting support 12 of connecting plate 10, cooperate the installation of sleeve 20 and locate but still have rotatable function, rotate mobile jib 35 again and can make the vertebral column of distortion return to the normal physiological radian as far as possible, and reach the three-dimensional space rectification effect with specific arc.
Claims (7)
1. vertebra retro position multi-shaft variable correction fixator is characterized in that:
Two sides of connecting plate are respectively equipped with short slot, and central authorities are formed with the connecting support of evagination, and this connecting support is provided with trepanning and the end run through and forms the breach that communicates with trepanning, in trepanning pertusate sleeve can be installed, and mobile jib can be inserted the perforation internal fixation,
The screw rod body that the vertebra stem is followed closely an end penetrates through the vertebra stem and is fixed on the vertebral body, the termination of end then is provided with perforation and reaches the breach that communicates with perforation in addition, in between termination and screw rod body, form the threaded portion, in the proximal head place and be positioned at opposite position and be formed with plane-parallel fit portion, this fit portion can be placed on the short slot place of connecting plate, cooperate screwing togather of hold-doun nut and threaded portion to urge again to reach the fixing of the two
Can insert screw rod again between the vertebra stem nail of adjacent vertebrae, the adjustment nut on the screw rod can be adjusted the spacing of adjacent two vertebra stems nail after displacement.
2. vertebra retro position multi-shaft variable correction fixator according to claim 1 is characterized in that: the short slot edge of connecting plate two sides is formed with the arc edge, and the described vertebra stem nail termination and the hold-doun nut place of relative contact with this arc edge are formed with arc body and arc piece respectively.
3. vertebra retro position multi-shaft variable correction fixator according to claim 1, it is characterized in that: perforation two sides of vertebra stem nail termination are formed with concave arc, and spiral shell is located on the screw rod and the adjustment nut that is positioned at vertebra stem nail termination two sides cooperates localized arc piece in being formed with this concave arc opposite position with concave arc.
4. vertebra retro position multi-shaft variable correction fixator according to claim 1, it is characterized in that: the same joint vertebra place that vertebra stem nail is arranged in implantation, cooperation is equipped with vertebral plate and colludes, the pedestal that this vertebral plate colludes is provided with vertical through hole, the oblique arc raker that is formed with in addition, and be formed with the upwards hook part of bending in the end, the through hole that vertebral plate can be colluded is placed on the screw rod and cooperates adjustment nut spiral shell solid, and this moment, the hook part of two rakers just can be detained the vertebral plate place that is fixed in vertebra respectively.
5. vertebra retro position multi-shaft variable correction fixator, it is characterized in that: two sides at connecting plate are respectively equipped with short slot, and central authorities are formed with the connecting support of evagination, this connecting support is provided with trepanning and the end run through and forms the breach that communicates with trepanning, in trepanning, pertusate sleeve can be installed, mobile jib can be inserted the perforation internal fixation
The vertebra stem colludes Yu Yiduan and is formed with the plate that colludes that is the U type, end then is formed with pedestal in addition, and the two is that a thickness is less and can insert slide block in the connecting plate short slot, trepanning and end that this pedestal is provided with taper are formed with breach, end face in trepanning is formed with dimple, and this trepanning can supply telescopic inserting, and sleeve is provided with perforation, and be provided with screw and run through wherein
The end that transverse process colludes is formed with the plate that colludes of downward bending, the pedestal of other end is provided with perforation and nose end is formed with the arc edge, and in the perforation side be provided with breach, can between the pedestal that transverse process colludes and the vertebra stem colludes, be equipped with and adjust tube, one screw rod can be inserted in the perforation that transverse process colludes and run through and be adjusted tube and sleeve, be located on the screw rod with the nut spiral shell that is formed with the arc piece again and press on the pedestal place that transverse process colludes, another nut then spiral shell is located at location, telescopic below
Make the two relative plates that collude to detain transverse process and the inferior articular process place that is fixed in vertebra and be positioned on the screw rod.
6. vertebra retro position multi-shaft variable correction fixator according to claim 5, it is characterized in that: on the short slot face of connecting plate both sides, form vittate stitching surface, insert the vertebra stem and collude the retardance face that is formed with longitudinal stripe on the tube face of sleeve one side in the pedestal trepanning, when sleeve is inserted trepanning, engage the location mutually with retardance face by stitching surface.
7. vertebra retro position multi-shaft variable correction fixator according to claim 5 is characterized in that: be formed with on the pedestal that the vertebra stem colludes for adjusting the localized dimple of tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94108212 CN1115229A (en) | 1994-07-22 | 1994-07-22 | Vertebra retro position multi-shaft variable correction fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94108212 CN1115229A (en) | 1994-07-22 | 1994-07-22 | Vertebra retro position multi-shaft variable correction fixator |
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| Publication Number | Publication Date |
|---|---|
| CN1115229A true CN1115229A (en) | 1996-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94108212 Pending CN1115229A (en) | 1994-07-22 | 1994-07-22 | Vertebra retro position multi-shaft variable correction fixator |
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| CN (1) | CN1115229A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108652730A (en) * | 2018-04-03 | 2018-10-16 | 李益香 | A kind of adjustable bending plate of implanted scoliosis surgery auxiliary |
| CN112842807A (en) * | 2020-12-31 | 2021-05-28 | 谢小华 | Orthopedic spine multi-azimuth correction device and correction method thereof |
-
1994
- 1994-07-22 CN CN 94108212 patent/CN1115229A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108652730A (en) * | 2018-04-03 | 2018-10-16 | 李益香 | A kind of adjustable bending plate of implanted scoliosis surgery auxiliary |
| CN110338896A (en) * | 2018-04-03 | 2019-10-18 | 李益香 | A kind of scoliosis surgery adjustable bending plate and its application method |
| CN110338896B (en) * | 2018-04-03 | 2022-08-02 | 李益香 | Adjustable bending plate for scoliosis operation and use method thereof |
| CN112842807A (en) * | 2020-12-31 | 2021-05-28 | 谢小华 | Orthopedic spine multi-azimuth correction device and correction method thereof |
| CN112842807B (en) * | 2020-12-31 | 2023-05-23 | 谢小华 | Multidirectional orthopedic spine correction device and correction method thereof |
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