CN102028533B - Spinal deformation correcting device - Google Patents

Abstract

The invention relates to the technical field of medical apparatus, and discloses a spinal deformation correcting device. The spinal deformation correcting device comprises pedicle screws, a longitudinal connective bar, a bar presser, a locking nut, transverse connectors and a longitudinal connecting framework, wherein the screw bodies of the pedicle screws are implanted into a vertebral body of aspinal column to be corrected; the longitudinal connective bar is spliced with grooves of the pedicle screws; the bar presser is sleeved on the outer side of the pedicle screws; the locking nut is matched with internal threads of the pedicle screws; the transverse connectors are connected with tail pipes of two pedicle screws positioned on the same vertebral body; and a plurality of the transverse connectors positioned in the longitudinal direction of the spinal column are connected with one another through the longitudinal connecting framework. Besides, the invention also discloses a using method of the spinal deformation correcting device.

Description

A kind of spinal column deformation correction device

Technical field

The present invention relates to technical field of medical instruments, relate in particular to a kind of spinal column deformation correction device.

Background technology

Have the history of decades by the operative treatment deformity of spine of internal fixation of spine technology; Adopt the internal fixation of spine technology so far the eighties in 20th century from China, fixation with steel wire under from initial Harrington (Ha Shi rod) technology to the Luque cone-plate of the seventies, arrive again CD(Cotrel-Dubousset) internal fixation system, the internal fixation of spine technology has obtained very large progress.In recent years, along with the development of spinal biomechanics research and material science, to such an extent as to the internal fixation of spine technology is widely applied in the operative treatments such as spinal column degenerative disease, tumor of spine, wound Spondylitis.

The apparatus of internal fixation of spine utilization comprises pedicle nail, rod, pressure bar device, breast-stroke pincers, waves pincers etc.Rod is relative with pedicle nail fixing, thereby by using pressure bar device, breast-stroke pincers, waving the apparatus such as pincers the rod with certain plasticity is carried out curved rod, pressure bar, revolves the operation such as rod and drive pedicle nail, realization resets to the orthopedic of vertebral body.

Please refer to Fig. 1, Fig. 1 is the structural representation of pedicle nail in the prior art.

Pedicle nail used in the prior art comprises nail seat and rivet nut, in the implantable spinal column of rivet nut, nail seat is provided with U-shaped groove 1, rod can be inserted in the U-shaped groove 1 of pedicle nail nail seat, be provided with screw thread 2 above the U-lag 1 above the sidewall of groove, this screw thread 2 cooperates and rod can be locked with suitable locking nut.

When carrying out the internal fixation of spine technology, select first suitable pedicle nail, the rivet nut of pedicle nail is implanted in the spinal column; Re-use the bottom that the breast-stroke pincers are pressed onto suitable rod the U-shaped groove 1 of pedicle nail.In the operation process, rod need to be pressed onto in the groove of nail seat of pedicle nail because pedicle nail implants according to the Human Physiology curve, therefore rod is penetrated setting not a plurality of pedicle nails on same straight line be very difficult.For U-shaped groove that rod is packed into smoothly, and with the physiological curve of excellent plastotype to the patient, except will using the breast-stroke pincers, also must use a large amount of supporting apparatuses such as waving pincers, pressure bar device to carry out pull-rod, pressure bar operation.After dress rod, pressure bar operation are finished, carry out again the resetting orthopedic operation; In the resetting orthopedic operating process, do by revolving clubs, with the curved rod instrument rod is carried out pre-bending in the body, make rod can be good at meeting the physiological curve of human body, also need simultaneously to cooperate miscellaneous part to strut and the operation such as pressurization.Above curved rod, strut, the operation such as pressurization usually hockets.

By the introduction of above-mentioned operative process as can be known, in dress rod and pressure bar operation, utilize the operating process of pedicle nail of the prior art and pressure bar device very complicated, thereby increased the difficulty of performing the operation.

Therefore, providing a kind of spinal column deformation correction device of conveniently treating the deformity of spine operation technique is the technical problem of the required solution of those skilled in the art.

Summary of the invention

The purpose of this invention is to provide a kind of spinal column deformation correction device, this spinal column deformation correction device can conveniently carry out the deformation of spinal column corrective operations.

For achieving the above object, spinal column deformation correction device provided by the present invention comprises pedicle nail, vertical pitman, pressure bar device, locking nut, lateral connector and vertical connecting frame;

The rivet nut of described pedicle nail is implanted in the vertebral body of the spinal column that needs rectification, and the groove of described vertical pitman and described pedicle nail is pegged graft, and described pressure bar device is placed in the outside of described pedicle nail, the screw-internal thread fit of described locking nut and described pedicle nail; Lateral connector is connected with the afterbody pipe that is positioned at same epicentral two pedicle nails respectively; Be positioned at spinal column longitudinally a plurality of lateral connectors connect by vertical connecting frame;

That the tube wall of described afterbody pipe is provided with is relative, communicate with the centre bore of described afterbody pipe respectively two wear excellent groove; Described outer end sealing of wearing excellent groove, outer surface at described afterbody pipe is provided with the bearing of trend first fold fault trough vertical with the centrage of described afterbody pipe and the second snap slot, and the distance of the outer end of described first fold fault trough and described afterbody pipe is greater than the described outer end of excellent groove and the distance between the described afterbody pipe outer end of wearing; Distance between described the second snap slot and the described afterbody pipe outer end is greater than the distance between the outer end of described first fold fault trough and described afterbody pipe.

Preferably, described pedicle nail comprises rivet nut, the nail seat that is connected with rivet nut, be provided with groove on the described nail seat, described groove medial wall is provided with female thread, the breech face of described nail seat is provided with the afterbody pipe, the bearing of trend of described afterbody pipe is opposite with the bearing of trend of described rivet nut, described afterbody pipe is provided with along the described vertical pitman of the axially extended confession of afterbody pipe along the afterbody caliber to the slotted hole that inserts, this slotted hole is communicated with described groove, and the internal diameter of described afterbody pipe is not less than the external diameter of described female thread.

Preferably, described pressure bar device is tubular structure, and the internal diameter of described pressure bar device is not less than the external diameter of described afterbody pipe, and the inwall of described pressure bar device is provided with the locking mechanism for one-way locking.

Preferably, described locking mechanism is the latch that matches with pawl on the described afterbody pipe sidewall.

Preferably, the sidewall of described pressure bar device is provided with groove, is provided with shell fragment in this groove, and the medial surface of this shell fragment is provided with the slope round platform that matches with knuckle-tooth on the described afterbody pipe sidewall.

Spinal column deformation correction device provided by the present invention comprises pedicle nail, vertical pitman, pressure bar device, locking nut, lateral connector and vertical connecting frame; The rivet nut of described pedicle nail is implanted in the vertebral body of the spinal column that needs rectification, and the groove of described vertical pitman and described pedicle nail is pegged graft, and described pressure bar device is placed in the outside of described pedicle nail, the screw-internal thread fit of described locking nut and described pedicle nail; Lateral connector is connected with the afterbody pipe that is positioned at same epicentral two pedicle nails respectively; Be positioned at spinal column longitudinally a plurality of lateral connectors connect by vertical connecting frame.

The spinal column deformation correction device of this structure, only adopt pedicle nail, vertically pitman, pressure bar device, locking nut, lateral connector and vertical connecting frame can be realized the deformation of spinal column corrective procedure, can so that the deformation of spinal column corrective procedure is simple to operate, easy operating, operation accurately, dangerous little.

Description of drawings

Fig. 1 is the structural representation of pedicle nail in the prior art;

Fig. 2 is a kind of front view of the specific embodiment of the pedicle nail of spinal column deformation correction device provided by the present invention;

Fig. 3 is the side view of pedicle nail shown in Figure 2;

Fig. 4 is the three-dimensional cutaway view of pedicle nail shown in Figure 2;

Fig. 5 is the structural representation that the afterbody pipe of pedicle nail provided by the present invention is connected with the nail seat split;

The structural representation of a kind of specific embodiment of the afterbody pipe parts processing of the pedicle nail that provides of the present invention is provided Fig. 6;

Fig. 7 is the cutaway view of pressure bar device provided by the present invention.

Structural representation when Fig. 8 is the locking nut installation;

Fig. 9 is the flow chart of spinal column deformation correction device using method provided by the present invention;

Figure 10 is the structural representation that pedicle nail is implanted vertebral body;

Figure 11 is the structural representation of implanting a plurality of pedicle nails on the spinal column;

Figure 12 is the structural representation that the pressure bar device carries out the pressure bar operation;

Figure 13 is the structural representation that a plurality of pedicle nails are installed with vertical pitman;

Figure 14 is that same epicentral two pedicle nails are by the fixing structural representation of lateral connector

Figure 15 be positioned at spinal column longitudinally a plurality of lateral connectors by the fixing structural representation of vertical connecting frame.

The specific embodiment

Core of the present invention provides a kind of spinal column deformation correction device, and this spinal column deformation correction device can conveniently carry out the deformation of spinal column corrective operations.

In order to make those skilled in the art person understand better the present invention program, the invention will be described in further detail below in conjunction with the drawings and specific embodiments.

Spinal column deformation correction device provided by the invention comprises pedicle nail, vertical pitman, pressure bar device, locking nut, lateral connector and vertical connecting frame.

The rivet nut of described pedicle nail is implanted in the vertebral body of the spinal column that needs rectification, and the groove of described vertical pitman and described pedicle nail is pegged graft, and described pressure bar device is placed in the outside of described pedicle nail, the screw-internal thread fit of described locking nut and described pedicle nail; Lateral connector is connected with the afterbody pipe that is positioned at same epicentral two pedicle nails respectively; Be positioned at spinal column longitudinally a plurality of lateral connectors connect by vertical connecting frame.

The spinal column deformation correction device of this structure, only adopt pedicle nail, vertically pitman, pressure bar device, locking nut, lateral connector and vertical connecting frame can be realized the deformation of spinal column corrective procedure, can so that the deformation of spinal column corrective procedure is simple to operate, easy operating, operation accurately, dangerous little.

Wherein, such as Fig. 2-shown in Figure 4,pedicle nail 100 comprisesrivet nut 8 andnail seat 7, and the afterbody ofnail seat 7 is provided with thegroove 72 at its breech face opening, andgroove 72 medial walls are provided with female thread 71.The breech face ofnail seat 7 is provided withafterbody pipe 4, and afterbodypipe 4 has predetermined length, and its bearing of trend is opposite with the bearing of trend of rivet nut 8.Afterbodypipe 4 is tubular structure, and its inner diameter d 1 is not less than situation about equating for both shown in the outside diameter d 2(figure offemale thread 71).Be provided with on the tube wall ofafterbody pipe 4 relative, communicate with thecentre bore 11 ofafterbody pipe 4 respectively two wearexcellent groove 10; Wearexcellent groove 10 and extend at the centerline direction of describedafterbody pipe 4, and innerly communicate withgroove 72, wearexcellent groove 10 for two and form for describedvertical pitman 40 along the slotted hole of afterbody caliber to insertion, this slotted hole iscentre bore 11; The outer surface of tube wall ofafterbody pipe 4 is provided with and locks mouth towards itsinner pawl 5.

Describedvertical pitman 40 is pegged graft with described groove, andpressure bar device 20 is placed in the outside of describedpedicle nail 100, and above-mentionedlocking nut 30 matches with described female thread.

The spinal column deformation correction device of this structure, when filling clubs and do, owing to have theafterbody pipe 4 of predetermined length, afterrivet nut 8 is implanted spinal column, the implantation point ofpedicle nail 100 can be departed from the outer end of theafterbody pipe 4 of a plurality ofpedicle nails 100, and then the outer end arrangement position ofafterbody pipe 4 that makes a plurality ofpedicle nails 100 is with verticallypitman 40 bearing of trends are more approaching; Like this, wearing during clubs does, can more easilyvertical pitman 40 passed successively the wearing in theexcellent groove 10 ofafterbody pipe 4 of a plurality ofpedicle nails 100.

In the pressure bar operation, utilizepressure bar device 20 described later to make rod inner mobile toafterbody pipe 4 along wearingexcellent groove 10; Because the inner of wearingexcellent groove 10 communicates with thegroove 72 ofnail seat 7, therefore,vertical pitman 40 successfully can be pressed onto in thegroove 72 ofnail seat 7 ofpedicle nail 100.

When utilizingpressure bar device 20 to carry out pressure bar, verticallypitman 40 is when wearingexcellent groove 10 and move, and verticallypitman 40 can also drivepedicle nail 100 and moves, and realizes certain orthopedic resetting.Wear rod and pressure bar the operation finish after, because the internal diameter ofafterbody pipe 4 is not less than the external diameter offemale thread 71, lockingnut 30 can be passed from thecentre bore 11 ofafterbody pipe 4, arrivefemale thread 71 places, lock again lockingnut 30, makevertical pitman 40 relative with the maintenance ofpedicle nail 100 fixing.Therefore, thispedicle nail 100 can conveniently fill rod and pressure bar operation.

The spinal column deformation correction device of this structure can conveniently fill rod and pressure bar operation.Simultaneously, in carrying out the pressure bar operation,pedicle nail 100 is swung withvertical pitman 40, thereby can realize certain resetting orthopedic, for follow-up resetting orthopedic operation provides good prerequisite.

The locking mouth ofpawl 5 is towards the inner ofafterbody pipe 4, andpawl 5 matches with the latch ofpressure bar device 20, like this, whenvertical pitman 40 is pressed intogroove 72 or is pressed onto the precalculated position,pawl 5 matches with the latch ofpressure bar device 20 and can makepressure bar device 20 and afterbodypipe 4 keep relative fixing, make rod keep temporary transient locking, thereby provide prerequisite for being fixedvertical pitman 40 or other operations.

In addition, on theafterbody pipe 4, the quantity ofpawl 5 and position can be selected according to actual needs.When being provided with a plurality ofpawl 5, a plurality ofpawls 5 can be worn the outward flange setting ofexcellent groove 10 along one or two, as shown in Figure 4; A plurality ofpawls 5 are arranged and can make pressure bar more convenient to operate along wearing excellent groove 10.Certainly,pawl 5 also can be arranged on other positions of the outer surface of tube wall ofafterbody pipe 4.

In thepedicle nail 100 in a kind of specific embodiment provided by the invention, wear the outer end sealing ofexcellent groove 10, can avoid wearing in the rod motion so on the one hand, verticallypitman 40 skids off and wearsexcellent groove 10, can also increase simultaneously the intensity of afterbody pipe, to reach better fixed effect.

When enclosed construction is adopted in the outer end of wearingexcellent groove 10, two relative U-shaped openings 9 can be set in the outer end portion ofafterbody pipe 4; It is interlaced on the centrage vertical plane ofafterbody pipe 4 that two U-shaped openings 9 and two wearexcellent groove 10; Simultaneously, the outer surface of tube wall atafterbody pipe 4 arranges the bearing of trend firstfold fault trough 3 vertical with the centrage ofafterbody pipe 4; Wherein, the distance L 2 between the outer end of firstfold fault trough 3 and afterbodypipe 4 is less than the distance L 1 between the outer end of the bottom of U-shaped opening 9 and afterbodypipe 4, and greater than thedistance L 3 between the outer end of the outer end of wearingexcellent groove 10 and afterbody pipe 4.After operation is finished, the part of two U-shaped opening 9 both sides can be fractureed along firstfold fault trough 3 like this, and then make and wearexcellent groove 10 outer ends and convert hatch frame to, the two side portions of wearingexcellent groove 10 for further fractureing facilitates.

Wear the two side portions ofexcellent groove 10 for the ease of fractureing, further, be provided with distance L between the outer end of bearing of trend the second snap slot 6, the second snap slots 6 vertical with the centrage ofafterbody pipe 4 and afterbodypipe 4 at the outer surface of tube wall ofafterbody pipe 4 greater than the distance L 2 between the outer end of firstfold fault trough 3 andafterbody pipe 4; After the pressure bar operation is finished, can fracture along the second snap slot 6 and wearexcellent groove 10 two side portions, and then shorten the length ofpedicle nail 100.

The second snap slot 6 can be arranged between the inner of firstfold fault trough 3 and afterbody pipe 4.Preferred embodiment, be the second snap slot 6 to be arranged on the junction ofafterbody pipe 4 andnail seat 7, and make the bearing of trend of the second snap slot 6 vertical with the centrage of afterbody pipe 4.Like this, when fractureing operation, can fully afterbodypipe 4 be removed, only keeprivet nut 8 and thenail seat 7 ofpedicle nail 100, reduce the space that therear pedicle nail 100 of operation takies.

Distance L 2 between the outer end of distance L 1, firstfold fault trough 3 and afterbodypipe 4 between the outer end of the distance L between the outer end of the second snap slot 6 andafterbody pipe 4, the bottom of U-shaped opening 9 andafterbody pipe 4 and wear the outer end ofexcellent groove 10 and the outer end ofafterbody pipe 4 between the numerical range ofdistance L 3 be equipped with, be that afterbodypipe 4 adopts different length, wears the different length ofexcellent groove 10 employings, above-mentioned distance all can change to some extent, can select according to actual needs.

The setting of above-mentioned firstfold fault trough 3 and the second snap slot 6 is not that what only define snap slot is two, and the quantity of snap slot and position can be selected according to practical operation, certainly, in afterbody tube material situation easy to break, snap slot can be set yet.

Under specific circumstances, the outer end that also can wearexcellent groove 10 is set to hatch frame.When adopting hatch frame, after operation fractureing ofafterbody pipe 4 being operated also can be more convenient.When wearingexcellent groove 10 for hatch frame, the outer surface of tube wall ofafterbody pipe 4 also can arrange the bearing of trend snap slot vertical with the centrage ofafterbody pipe 4, for the postoperative operation that fractures is provided convenience, and the quantity of snap slot can arrange according to the needs of reality processing.

The above outer end and the inner all are forrivet nut 8, be the inner near an end ofrivet nut 8 namely, are the outer end away from an end ofrivet nut 8.

Afterbody pipe 4 andnail seat 7 can be set to integrative-structure, even afterbodypipe 4 andnail seat 7 are one-body molded.With respect tonail seat 7, because afterbodypipe 4 is longer, thefemale thread 71 ofnail seat 7 added relatively difficulty of trade union; For the ease of processing, afterbodypipe 4 also can be set to Split type structure withnail seat 7, namely after processing respectively, adopts welding or other modes to be fixedly connected with again.When adopting welding manner, should be noted that will stagger with the position of the second snap slot 6 in the welding position in order not affect the setting of the second snap slot 6.

Please refer to Fig. 5 and Fig. 6, Fig. 5 is the structural representation that the afterbody pipe of pedicle nail provided by the present invention is connected with the nail seat split, and the structural representation of a kind of specific embodiment of the afterbody pipe parts processing of the pedicle nail that provides of the present invention is provided Fig. 6.

Described afterbodypipe 4 parts processings are referred to, at first, a part and thenail seat 7 ofafterbody pipe 4 is processed as one, another part ofafterbody pipe 4 is separately after the processing, with two parts welding ofafterbody pipe 4, and then the structures such asexcellent groove 10, U-shaped opening 9 andpawl 5 are worn in processing.Certainly, also can change according to actual needs machining process.

Please refer to Fig. 7, Fig. 7 is the cutaway view of pressure bar device provided by the present invention.

As shown in Figure 7, thispressure bar device 20 is tubular structure, and the inside diameter D 2 ofpressure bar device 20 is not less than the outer diameter D 1 of above-mentionedafterbody pipe 4, also is provided with thelatch 12 that matches with above-mentionedpawl 5 on the inwall of pressure bar device 20.Latch 12 can be by flexure strip or other elastomeric elements andpressure bar device 20 the linking to each other of inwall; Like this, in carrying out the pressure bar operating process,latch 12 is outwards swung, to make things convenient forpressure bar device 20 down slidings under the effect ofpawl 5 tops; Elastomeric element can keep latch 12 to move inward trend, to keep at preposition and the cooperating ofpawl 5.

In addition, larger at the internal diameter ofpressure bar device 20, and when having suitable dimension, also can makelatch 12 andpressure bar device 20 inwalls keep fixing; In this situation, when pressure bar, need to make the centrage ofpressure bar device 20 depart from the centrage ofafterbody pipe 4, makelatch 12 keep separating withpawl 5, afterpressure bar device 20 arrives precalculated positions, make again 20 translations of pressure bar device, latch 12 is cooperated withpawl 5 maintenances.

When carrying out the pressure bar operation, because the inside diameter D 2 ofpressure bar device 20 is not less than the outer diameter D 1 ofafterbody pipe 4, therefore,pressure bar device 20 can be set to outside thepedicle nail 100 afterbody pipes 4.Pressure bar device 20 is pressed down,vertical pitman 40 is moved along wearing excellent groove direction, when needs are located, latch 12 is cooperated, temporarily with excellent locking with pawl 5.In the situation that latch 12 andpawl 5 match, just can realize the location ofpressure bar device 20 and the vertical temporary transient locking ofpitman 40, therefore,pressure bar device 20 goes for the external diameter ofafterbody pipe 4 less than the above-mentionedpedicle nail 100 of the different model of its internal diameter.

In addition, be provided with two relative excellent draw-ingrooves 13 in a side end face of pressure bar device 20.In the operating process, excellent draw-ingroove 13 is used for being stuck in the side ofvertical pitman 40, andvertical pitman 40 is moved along wearingexcellent groove 10.

Thelatch 12 ofpressure bar device 20 can only arrange one, and whenpressure bar device 20 carried out pressure bar, along with moving down ofpressure bar device 20, thepawl 5 that latch 12 can be different from position onpressure bar device 20 centerline directions cooperated, equally can be at preposition with the temporary transient locking of rod.Certainly, latch 12 can also be set to a plurality of.

In above-described embodiment, the locking mechanism that is used for one-way lockingpressure bar device 20, adopt the structure of the latch that matches with pawl on the described afterbody pipe sidewall, described locking device can also adopt following structure: the sidewall atpressure bar device 20 is provided with groove, being provided with in this groove can be along the shell fragment ofpressure bar device 20 radial elastics distortion, the medial surface of this shell fragment is provided with the slope round platform, and can match with the knuckle-tooth that arranges on the afterbody pipe sidewall in the side of this slope round platform, with one-way lockingpressure bar device 20; When withdrawing frompressure bar device 20, can press down shell fragment, so that breaking away from knuckle-tooth, the slope round platform cooperates.

Whenvertical pitman 40 is pressed in the groove on the nail seat ofpedicle nail 100, for fixingvertical pitman 40, can adopt female thread on lockingnut 30 and the groove to form cooperates, as shown in Figure 8, lockingnut 30 passes from the centre bore 11 ofafterbody pipe 4, arrivefemale thread 71 places, lock again lockingnut 30, makevertical pitman 40 relative with the maintenance ofpedicle nail 100 fixing.

In the concrete scheme, the structure of described lateral connector as shown in figure 14,lateral connector 50 can be connected with same epicentral twopedicle nails 100, can be used for adjusting two angles between thepedicle nail 100.

In the concrete scheme, the structure of described vertical connecting frame as shown in figure 15, vertically connecting frame comprises horizontal connecting rod and two vertical connecting rods that are arranged side by side, vertically connecting rod connects a plurality oflateral connectors 50, laterally connecting rod connects two vertical connecting rods, and laterally connecting rod is provided with and notch the distance between two vertical connecting rods of movable adjusting, but and one-way locking, to play fixation.

The present invention also provides a kind of using method of above-mentioned spinal column deformation correction device, and following examples are simply introduced it by reference to the accompanying drawings.

Please referring to Fig. 9, Fig. 9 is the flow chart of spinal column deformation correction device using method provided by the present invention.

As shown in Figure 9, the using method of this spinal column deformation correction device may further comprise the steps.

Step 101 is implanted the rivet nut ofpedicle nail 100 in the vertebral body.As shown in figure 10, as required, select to have thepedicle nail 100 of appropriate length, diameter, select suitable to enter to follow closely angle, enter to follow closely a little in cone, enter the rivet nut that the nail point is implantedpedicle nail 100 described; As shown in figure 11, respectively along A1, A2 direction, implant a plurality ofpedicle nails 100 in a plurality of cones in the both sides of spinal column.

Step 102 is insertedvertical pitman 40 in the centre bore 11 ofafterbody pipe 4 of pedicle nails 100.Vertical pitman 40 is inserted in the centre bore 11 ofafterbody pipe 4 ofpedicle nails 100,vertical pitman 40 inserts in the centre bore 11 ofafterbody pipe 4 of a plurality ofpedicle nails 100 of spinal column the same side successively.

Step 103, as shown in figure 12,pressure bar device 20 is sleeved on the outside of theafterbody pipe 4 ofpedicle nail 100, and mobilepressure bar device 20 is so that thevertical pitman 40 of the base abuts ofpressure bar device 20, to pressing downvertical pitman 40, untilvertical pitman 40 is pressed in the groove ofnail seat 7 ofpedicle nail 100, as shown in figure 13, verticallypitman 40 passes a plurality ofpedicle nails 100, when verticallypitman 40 passes a plurality ofpedicle nail 100, can be to the spinal column adjustment that tentatively resets.

Step 104 enters lockingnut 30 in the nail seat byafterbody pipe 4, and lockingnut 30 forms with thefemale thread 71 ofnail seat 7 and cooperates, and can form interim locking tovertical pitman 40.

Step 105 is carried out the restoring backbone operation.Spinal column is carried out rectification and recovery, can adoptlateral connector 50, as shown in figure 14,lateral connector 50 is connected with same epicentral twopedicle nails 100, angle between twopedicle nails 100 of capable of regulating can carry out the rectification and recovery operation bylateral connector 50 and 60 pairs of spinal columns of vertical connecting frame.

Step 106, spinal column carried out the rectification and recovery end of operation after,screw locking nut 30, withvertical pitman 40 lockings.

Step 107, theafterbody pipe 4 of thepedicle nail 100 that fractures.After lockingvertical pitman 40, removeafterbody pipe 4, specifically removeafterbody pipe 4 by the mode that fractures, the rectification and recovery operation of spinal column is finished.

The using method of this spinal column deformation correction device can conveniently fill the operation of rod and pressure bar, can realize relatively easily the rectification and recovery operation of spinal column.

Used specific embodiment herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for excellent assistant and separates method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.

Claims (5)

1. a spinal column deformation correction device comprises pedicle nail, vertical pitman, pressure bar device, locking nut, lateral connector and vertical connecting frame; The rivet nut of described pedicle nail is implanted in the vertebral body of the spinal column that needs rectification, and the groove of described vertical pitman and described pedicle nail is pegged graft, and described pressure bar device is placed in the outside of described pedicle nail, the screw-internal thread fit of described locking nut and described pedicle nail; Described lateral connector is connected with the afterbody pipe that is positioned at same epicentral two pedicle nails respectively; Be positioned at spinal column longitudinally a plurality of described lateral connectors connect by described vertical connecting frame; It is characterized in that,

That the tube wall of described afterbody pipe is provided with is relative, communicate with the centre bore of described afterbody pipe respectively two wear excellent groove; Described outer end sealing of wearing excellent groove, outer surface at described afterbody pipe is provided with the bearing of trend first fold fault trough vertical with the centrage of described afterbody pipe and the second snap slot, and the distance of the outer end of described first fold fault trough and described afterbody pipe is greater than the described outer end of excellent groove and the distance between the described afterbody pipe outer end of wearing; Distance between described the second snap slot and the described afterbody pipe outer end is greater than the distance between the outer end of described first fold fault trough and described afterbody pipe.

2. spinal column deformation correction device according to claim 1, it is characterized in that, described pedicle nail comprises rivet nut, the nail seat that is connected with rivet nut, be provided with groove on the described nail seat, described groove medial wall is provided with female thread, the breech face of described nail seat is provided with the afterbody pipe, the bearing of trend of described afterbody pipe is opposite with the bearing of trend of described rivet nut, described afterbody pipe is provided with along the described vertical pitman of the axially extended confession of afterbody pipe along the afterbody caliber to the slotted hole that inserts, this slotted hole is communicated with described groove, and the internal diameter of described afterbody pipe is not less than the external diameter of described female thread.

3. spinal column deformation correction device according to claim 1 is characterized in that, described pressure bar device is tubular structure, and the internal diameter of described pressure bar device is not less than the external diameter of described afterbody pipe, and the inwall of described pressure bar device is provided with the locking mechanism for one-way locking.

4. spinal column deformation correction device according to claim 3 is characterized in that, described locking mechanism is the latch that matches with pawl on the described afterbody pipe sidewall.

5. spinal column deformation correction device according to claim 3 is characterized in that, the sidewall of described pressure bar device is provided with groove, is provided with shell fragment in this groove, and the medial surface of this shell fragment is provided with the slope round platform that matches with knuckle-tooth on the described afterbody pipe sidewall.

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