CN205493992U - A wicresoft's soft tissue expansion subassembly that is used for pedicle of vertebral arch screw to put nail - Google Patents

Abstract

The utility model discloses a wicresoft's soft tissue expansion subassembly that is used for pedicle of vertebral arch screw to put nail, include trocar, guide pin, expansion core and put nail guide sleeve, the expansion core includes the cylinder that has the guide pin through -hole along the axis on, and the external diameter of cylinder is the same with the nail seat external diameter of pedicle of vertebral arch screw, the one end of cylinder is the taper shape, and the other end is handheld portion. This wicresoft's soft tissue expansion subassembly has advantages such as easy operation is convenient, operating time is short.

Description

A kind of Wicresoft's soft-tissue expansion assembly for Pedicle Screw

Technical field

This utility model relates to bone surgery medical instruments field, is specifically related to a kind of Wicresoft soft-tissue expansion assembly.

Background technology

Along with the development of Medical Technology, less invasive techniques is maked rapid progress in each field of medical science, and such as pedicle screw instrumentation has Advantage fixed by three posts, is a kind of highly developed spine surgical technique, is widely used.Traditional method is to use way of escape otch Open surgery, need to extensively peel off the structure such as paraspinal muscle, ligament, is easily caused paraspinal muscle and loses innervation, and patient easily leaves over Lumbar and back pain, the sequela such as stiff.And this operation wound is big, hemorrhage many, the hospital stays is long, adds patient painful and economical Burden.Minimal invasion pedicle screw instrumentation was applied to clinic in recent years, and wound is little, lost blood few, recovers fast, and achieves Certain curative effect.But, puncture technique is the key technology of less invasive techniques, punctures the Wicresoft's wound obtained little, need to expand soft tissue To set up operating walk way, the method for expansion soft tissue is expanded the most step by step at present, and the operating time is longer, extends operating time.

Utility model content

The technical problems to be solved in the utility model is the deficiency overcoming prior art to exist, it is provided that a kind of simple to operation, behaviour The Wicresoft's soft-tissue expansion assembly for Pedicle Screw that time of making is shorter.

For solve above-mentioned technical problem, this utility model by the following technical solutions:

A kind of Wicresoft's soft-tissue expansion assembly for Pedicle Screw, including puncture awl, guide pin, expansion core with put nail and lead To sleeve, described expansion core includes the nail of the cylinder along axis with guide pin through hole, cylindrical external diameter and pedicle screw Seat external diameter is identical；Cylindrical one end is cone, and the other end is Handheld Division.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that described in put nail pilot sleeve and include the cylinder along axis with through hole Body, one end of cylinder is band saw dentation, and the other end is fixedly connected with the first hand-held horizontal handle, and the length of cylinder is less than expansion The cylindrical length of core.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that described in put the nail of internal diameter and pedicle screw of nail pilot sleeve through hole Body diameter is identical, and the length of described cylinder is more than the rivet nut of pedicle screw, nail seat and broken long-armed total length.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that described puncture awl includes puncture casing and punctures awl, puncture casing For hollow pipe, the front end of puncture casing is taper, and the rear end of puncture casing is provided with the hand grip portion expanded, and puncture awl is needle-like, Puncturing awl to insert in puncture casing, the front end puncturing awl is taper, puncture the tail end of awl by detachable attachment mechanism with The hand grip portion of puncture casing connects, and punctures the conical points of awl front end with the hand grip portion of puncture casing after puncture awl backshank end is connected Expose puncture casing front end and the taper with puncture casing front end coincide.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that in described hand grip portion hollow expand formed accommodating hole, described detachably Bindiny mechanism includes that the female thread being located in described accommodating hole, the tail end of described puncture awl expand and be provided with and described female thread The external screw thread joined.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that the surface of described puncture casing and the surface of guide pin are equipped with scale.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that the front end of described puncture casing is provided with and opens seam cortex for rotary drilling Rhizoma Sparganii tooth.

Above-mentioned Wicresoft's soft-tissue expansion assembly, it is preferred that described guide pin is needle-like, there is scale on guide pin surface.

Compared with prior art, the utility model has the advantage of: the Wicresoft for Pedicle Screw of the present utility model is soft Tissue expander assembly, makes full use of the feature that soft tissue ductility is good, uses the expansion that expansion method realizes soft tissue one time, can Once expansion soft tissue sets up Micro-operation passage, simple and efficient to handle, it may also be used for feeler inspection dissects entrance, determines point of puncture, Other mis instruments is guided to carry out Micro-operation through passage.

Accompanying drawing explanation

Fig. 1 is the structural representation of puncture awl.

Fig. 2 is the sectional structure schematic diagram of puncture awl.

Fig. 3 is the structural representation of guide pin.

Fig. 4 is the perspective view of expansion core.

Fig. 5 is the sectional structure schematic diagram of expansion core.

Fig. 6 is the structural representation putting nail pilot sleeve.

Fig. 7 is the structural representation of hollow flat prominent file.

Fig. 8 is the structural representation of hollow screw tap.

Fig. 9 is the structural representation of the hollow upper nail device without projection.

Figure 10 is the structural representation of the hollow upper nail device with projection.

Figure 11 is the structural representation of seal wire.

Figure 12 is the structural representation of fixing axle pedicle screw.

Figure 13 is the structural representation of movable axis pedicle screw.

Figure 14 is rivet nut and the schematic diagram of ball head structure of movable axis pedicle screw.

Figure 15 is the structural representation of the plug screw of movable axis pedicle screw.

Figure 16 is the structural representation of the bulb pressure pad of movable axis pedicle screw.

Marginal data:

1, pedicle screw；10, rivet nut；11, nail seat；12, broken long-armed；13, plug screw；14, U-shaped structure；15、 Bulb；16, bulb pressure pad；17, consent is held；18, recessing mark；3, puncture awl；31, puncture casing；32, awl is punctured； 33, hand grip portion；4, guide pin；5, expansion core；51, cylinder；6, nail pilot sleeve is put；61, cylinder；62, first Hand-held horizontal handle；7, upper nail device；71, strut；72, chock plug；73, the 4th hand-held horizontal handle；74, hammerlock pipe；75, turncap； 76, screw guide ring；77, rotary handle；78, rotation stopping screw；79, protruding；9, seal wire；100, hollow flat prominent file； 101, file bar；102, the second hand-held horizontal handle；103, file head；200, hollow screw tap；201, screw tap bar；202, the 3rd hands Hold horizontal handle；203, tap holder.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.

As shown in Figure 12 to Figure 16, pedicle screw 1 includes rivet nut 10, nail seat 11, two broken long-armed 12 and plug screw 13, rivet nut 10 is connected with nail seat 11, and two broken long-armed 12 are contrario fixedly connected in nail seat 11 formation U-shaped structure 14, U-shaped structure 14 is used for embedding vertical connecting bar, plug screw 13 is for being screwed in the U-shaped structure 14 of two broken long-armed 12 Compress vertical connecting bar.Rivet nut 10 is solid or hollow, and hollow rivet nut 10 has guide pin 4 through hole vertically, and rivet nut 10 is provided with spiral shell Stricture of vagina.

Article two, the broken inner surface of long-armed 12 has female thread, and as shown in figure 15, the outer surface of plug screw 13 has with broken The external screw thread of long-armed 12 inner surface female threads couplings, one end of plug screw 13 has holds consent 17, and two broken long-armed 12 remote Afterbody from nail seat 11 is additionally provided with smooth section, and when inserting between plug screw 13 is along broken long-armed 12, smooth section is to plug screw 13 It play the guiding role.

Pedicle screw 1 can be arranged as required to into fixing axle pedicle screw 1 and/or movable axis pedicle screw 1, rivet nut 10 For solid or hollow, hollow rivet nut 10 has guide pin 4 through hole vertically.Such as, the structure such as figure of fixing axle pedicle screw 1 Shown in 1, it is connected owing to rivet nut 10 is fixing with nail seat 11 so that rivet nut 10 can not nail seat 11 be moved relatively, is therefore formed solid Dead axle pedicle screw 1.Nail seat 11 is short cylindrical shape, and two broken long-armed 12 fixing with nail seat 11 is connected.

The structure of movable axis pedicle screw 1, as in figure 2 it is shown, nail seat 11 is hollow-core construction, is built-in with bulb 15 and bulb pressure Pad 16.Wherein rivet nut 10 is fixing with bulb 15 is connected, and bulb pressure pad 16 is positioned at the hollow structure of nail seat 11, and is pressed in ball On 15.Bulb pressure pad 16 is also hollow structure, as shown in figure 16 so that vertical connecting bar can embed in U-shaped structure 14 and press On bulb pressure pad 16.Polygonal grooves is had, as shown in figure 14 on bulb 15.It is flexibly connected between bulb 15 with nail seat 11. In U-shaped structure 14 under the pressure effect of vertical connecting bar, the position of rivet nut 10 and nail seat 11 is fixed.Movable axis pedicle of vertebral arch screw Nail 1 is flexibly connected with nail seat 11 due to bulb 15 so that rivet nut 10 has certain mobility, beneficially three joint vertebras in all directions More than body fixing.

Compared with common fixing axle pedicle screw 1, fixing axle and movable axis pedicle screw 1 have short cylindrical shape nail seat 11, can Plug screw 13 is play the guiding role by the smooth section of long-armed 12 tail ends of fractureing, it is simple to be screwed into plug screw 13；Nail seat 11 is to pedicle of vertebral arch simultaneously Screw 1 plays direction controlling effect when the slip put in nail pilot sleeve 6；Rivet nut 10 is solid or hollow, and rivet nut 10 is solid More hollow active force is strong, and hollow rivet nut 10 can be screwed into along seal wire 9, puts nail accuracy rate high.

Under preferable case, for the long-armed of pedicle screw 1 that preferably fracture, on two broken long-armed 12 of pedicle screw 1 End near nail seat 11 is provided with recessing mark 18.Relatively break weak at recessing mark 18, can fracture broken long-armed 12 herein.

As shown in Figures 1 to 6, the Wicresoft's soft-tissue expansion assembly for Pedicle Screw of the present utility model, including wearing Stinging cone 3, guide pin 4, expansion core 5 and put nail pilot sleeve 6, wherein, puncture awl 3 and guide pin 4 are used for determining puts nail position. As depicted in figs. 1 and 2, puncture awl 3 includes puncture casing 31 and punctures awl 32.Puncture casing 31 is hollow pipe, front end For taper, rear end is provided with the hand grip portion 33 expanded, hollow expansion be provided with female thread in hand grip portion 33, and puncturing awl 32 is pin Shape, the front end puncturing awl 32 is also taper, and the tail end puncturing awl 32 expands and is provided with external screw thread, punctures awl 32 and inserts In puncture casing 31, when the external screw thread puncturing awl 32 tail end mate with the female thread of puncture casing 31 rear end identical after puncture awl The conical points of pin 32 front end exposes puncture casing 31 front end and the taper with puncture casing 31 front end coincide.Puncture casing 31 table There is scale in face, can measure the insertion depth of puncture awl 3.

As it is shown on figure 3, guide pin 4 is needle-like, it is inserted into after extracting puncture awl 32 from puncture casing 31, determines and put Nail position.There is scale on the surface of guide pin 4.After guide pin 4 is inserted in the middle part of vertebral body from puncture casing 31, extract puncture casing 31, indwelling guide pin 4.

Expansion core 5 includes the cylinder 51 along axis with guide pin 4 through hole, as shown in Figure 4 and Figure 5.Cylinder 51 External diameter is identical with nail seat 11 external diameter of pedicle screw 1.One end of cylinder 51 is cone, and the other end is Handheld Division.Expand Opening core 5 to screw in along guide pin 4, disposable expansion muscle passage, head end arrives at Pedicle entrance surface of bone.Due to mini-incision 1.5cm Cut skin, deep fascia, therefore expansion core 5 is easy to expand spatium intermusculare, expand step by step with tradition compared with, simple to operate, Fast save time.

In the present embodiment, put the cylinder 61 that nail pilot sleeve 6 includes having pedicle screw 1 through hole along axis, such as Fig. 6 Shown in.One end of cylinder 61 is band saw dentation, and the other end is fixedly connected with the first hand-held horizontal handle 62, and expansion core 5 is along leading Pin 4 inserts, then put nail pilot sleeve 6 along expansion core 5 insert, therefore the internal diameter of cylinder 61 with expansion core 5 external diameter, with And it is equal with the external diameter three of pedicle screw 1 nail seat 11.

The length of cylinder 61 is shorter than the length of expansion core 5, puts nail pilot sleeve 6 and inserts along expansion core 5, the tail of expansion core 5 End Handheld Division is exposed outside the afterbody putting nail pilot sleeve 6, operator hold put nail pilot sleeve 6 the first hand-held horizontal handle 62 and under Sliding make the circular saw spine putting nail pilot sleeve 6 at vertebral plate, articular process surface of bone, compress and put the first hand-held of nail pilot sleeve 6 Horizontal handle 62, to keep the circular saw putting nail pilot sleeve 6 not move, then extracts expansion core 5, retains and put nail pilot sleeve 6 and guide pin 4, now guide pin 4 is in the circular saw central point putting nail pilot sleeve 6 to the marrow.The length of cylinder 61 is big Rivet nut 10, nail seat 11 and the broken total length of long-armed 12 in pedicle screw 1.Therefore, insert when pedicle screw 1 Putting in nail pilot sleeve 6, rivet nut 10 point of pedicle screw 1 is the most concordant when putting the circular saw of nail pilot sleeve 6, vertebral arch Two broken long-armed 12 cylinders 61 that submerge of root screw 1.

Wicresoft of the present utility model soft-tissue expansion assembly and hollow flat prominent file 100, hollow screw tap 200, upper nail device 7 and seal wire 9 Combination constitutes general spike devices of putting and carries out putting nail, wherein:

As shown in figure 11, seal wire 9 is elongated silk, and its diameter is less than or equal to guide pin 4 diameter, and length is more than the length of guide pin 4.

Changing guide pin 4 into seal wire 9 with puncture awl 3, hollow Pediculus arcus vertebrae screw 1 can insert along seal wire 9 through putting nail pilot sleeve 6 And it is screwed into vertebral body.Solid pedicle screw 1 along put nail pilot sleeve 6 be co-axially inserted time, it is possible to realize be accurately positioned, solve Prior art can only insert, in hollow screw, the technical problem that seal wire 9 just can be accurately positioned.

Finding in open surgery, owing to articular process is uneven, pedicle screw 1 rivet nut 10 tip is difficult to insert little vertebra sometimes Nut entrance, the easy kibe of cortex, displacement when twisting nail.Hollow flat prominent file 100 is used for the cortical bone of filing guide pin 4 mouth to the marrow, And in piercing pedicle of vertebral arch several millimeters, manufacture the pedicle of vertebral arch bone entrance having size to have the degree of depth.

As it is shown in fig. 7, hollow flat prominent file 100 is T-shaped structure, including having the file bar 101 of guide pin 4 through hole along axis, One end of file bar 101 is fixedly connected with file 103, and the other end is fixing connects the second hand-held horizontal handle 102.File 103 end face are provided with Roll flute, periphery is provided with brill style gear screw thread.Hollow flat prominent file 100 inserts Pedicle entrance along guide pin 4, the most hollow flat prominent File 100 internal diameters and be less than the external diameter of pedicle screw 1 rivet nut 10 slightly larger than guide pin 4, the external diameter of its file bar 101.

Hollow screw tap 200 carries out tapping for opposed nail position, facilitates inserting of pedicle screw 1.As shown in Figure 8, hollow Screw tap 200 is T-shaped structure, and including having the screw tap bar 201 of guide pin 4 through hole along axis, one end of screw tap bar 201 is fixed Connecting and have tap holder 203, the other end is fixing connects the 3rd hand-held horizontal handle 202.The periphery of tap holder 203 is provided with and pedicle screw The thread road of 1 rivet nut 10 coupling.Hollow screw tap 200 inserts Pedicle entrance along guide pin 4, the most hollow screw tap 200 interior Footpath is slightly larger than guide pin 4, and the external diameter of its screw tap bar 201 is identical with the external diameter of pedicle screw 1 rivet nut 10.The spiral shell of tap holder 203 Wen Chi road matches with the screw thread of pedicle screw 1 rivet nut 10.Vertebral portion is attacked by hollow screw tap 200 along guide pin 4 Silk, for having the pedicle screw 1 of self tapping ability then without using hollow screw tap 200 to carry out tapping.

The structure of hollow upper nail device 7 is as it is shown in figure 9, include strut 71 and lay respectively at the chock plug 72 and the at strut 71 two ends Four hand-held horizontal handles 73.Being arranged with rotating hammerlock pipe 74 on strut 71, hammerlock pipe 74 is near one end outer surface of chock plug 72 Having the external screw thread mated with broken long-armed 12 inner surface female threads, the other end of hammerlock pipe 74 is fixedly connected with turncap 75, For rotating hammerlock pipe 74, turncap 75 there is lock nut.When hammerlock pipe 74 is rotated in place locking pedicle screw 1, Lock nut pins turncap 75, prevents hammerlock pipe 74 from exiting, and hammerlock pipe 74 is arranged with screw guide ring 76 and rotates hands Handle 77, wherein, screw guide ring 76 is located close to chock plug 72 side, and rotary handle 77 is located close to the 4th hand-held horizontal handle 73 Side.Screw guide ring 76 and rotary handle 77 are enclosed within hammerlock pipe 74, can be the most independently rotated.Additionally, hammerlock pipe 74 On be additionally provided with by screwing the rotation stopping screw 78 pushing against or unclamping strut 71, upper nail device 7 also has seal wire 9 through hole, seal wire 9 Through hole axially penetrates through chock plug 72, strut 71 and the 4th hand-held horizontal handle 73 along strut 71.

Chock plug 72 is directly inserted in bottom the U-shaped structure 14 of pedicle screw 1, rotates turncap 75 and makes the outer spiral shell of hammerlock pipe 74 The female thread of stricture of vagina long-armed 12 inner surfacies broken with pedicle screw 1 is engaged tightly, thus is fixed on hollow by pedicle screw 1 On nail device 7.The external diameter of screw guide ring 76 and pedicle screw 1 nail seat 11 external diameter and put the internal diameter phase of nail pilot sleeve 6 Deng.When the pedicle screw 1 being connected with hollow upper nail device 7 along put nail pilot sleeve 6 insert time, screw guide ring 76 also into Put in nail pilot sleeve 6, and coincide with the inwall putting nail pilot sleeve 6.Therefore, have in the middle front end putting nail pilot sleeve 6 The nail seat 11 of pedicle screw 1, there is screw guide ring 76 rear end so that pedicle screw 1 slides in putting nail pilot sleeve 6 Time guarantee that the most advanced and sophisticated alignment of rivet nut 10 puts the center position of nail pilot sleeve 6, thus ensure the rivet nut of solid pedicle screw 1 The tip of 10 is properly inserted pedicle of vertebral arch bone entrance.The circular saw putting nail pilot sleeve 6 stings on vertebral plate, articular process cortical bone, Center position is kept not rotate, when, after the most advanced and sophisticated insertion pedicle of vertebral arch bone entrance of rivet nut 10, putting nail pilot sleeve 6 can be with upper nail Device 7 direction changes, and makes pedicle screw 1 be screwed into towards direction more precisely, is similar to open and puts nail.

When pedicle screw 1 is movable axis pedicle screw 1, due to nail seat 11 with rivet nut 10 for being flexibly connected, only with Chock plug 72 cannot complete the upper nail operation of movable axis pedicle screw 1.Therefore, upper nail device 7 also has the another kind side of being preferable to carry out Formula, as shown in Figure 10, the chock plug 72 of described upper nail device 7 is additionally provided with protruding 79, is used for inserting movable axis pedicle screw 1 Bulb 15 groove in, directly twist movable axis pedicle screw 1 rivet nut 10, meanwhile, above-mentioned seal wire 9 through hole is through convex Play 79.

As a example by the chest vertebra body fracture of lumbar vertedra, comprise the general of this utility model Wicresoft soft-tissue expansion assembly and put spike devices work process As follows:

1, after anaesthetizing successfully, patient takes ventricumbent position, and abdominal part is unsettled.

2, C arm X-ray machine Fluoroscopy location: have an X-rayed body surface location by many Kirschner wires or grid normotopia, labelling hinders vertebra and vertebra up and down Pedicle of vertebral arch body surface projection, opens percutaneous with puncture awl 3 by pedicle of vertebral arch body surface projection outer rim and penetrates, and needle point reaches the projection of pedicle of vertebral arch bone Wear out cortical layer at " eyes " outer upper limb 2 or 10, slowly pierce and reach in the middle part of vertebral body, extract puncture awl 32, wear long Thorn sleeve pipe 31 inserts guide pin 4 and reaches in the middle part of vertebral body, extracts puncture casing 31, retains guide pin 4, with method percutaneous in other pedicles of vertebral arch Inserting guide pin 4, position, positive side perspective confirms that guide pin 4 position is appropriate.

3, centered by guide pin 4, do longitudinal skin incision of 1.5 centimetres, and cut deep fascia, insert along guide pin 4 with expansion core 5 Entering passage conflict cortical bone, put nail pilot sleeve 6 and insert along expansion core 5, the hand-held first hand-held horizontal handle 62 of operator compresses, and makes The circular saw spine putting nail pilot sleeve 6 front end enters the surface cortex of vertebral plate, articular process, and fixing nail pilot sleeve 6 of putting keeps Position is not moved, and extracts expansion core 5, retains and put nail pilot sleeve 6 and guide pin 4.

4, insert along guide pin 4 with hollow flat prominent file 100, polish guide pin 4 entrance cortical bone, and pierce a little degree of depth, extract sky The flat prominent file 100 of the heart, carries out tapping along guide pin 4 to pedicle screw trajectory with hollow screw tap 200, extracts guide pin 4.

5, after hollow upper nail device 7 is connected with pedicle screw 1, inserting along putting nail pilot sleeve 6, the tip of rivet nut 10 is accurately Insert Pedicle entrance, rotate hollow upper nail device 7, be screwed into pedicle screw 1.Same method inserts remaining pedicle screw 1, Hinder vertebra if desired and can insert one side or bilateral screw.

Other method puts hollow Pediculus arcus vertebrae screw 1, inserts in vertebral body with the puncture casing 31 of puncture awl 3 along guide pin 4, extracts Guide pin 4 retains puncture casing 31, seal wire 9 inserts along puncture casing 31 hole vertebral body, extracts puncture casing 31, retain seal wire 9, hollow Pediculus arcus vertebrae screw 1 is connected tailing edge seal wire 9 with hollow upper nail device 7 and inserts, and is screwed into hollow Pediculus arcus vertebrae screw 1 to vertebral body In.

Above-mentioned general spike devices of putting has the advantage that

1, owing to the front end puncturing awl 32 is set to taper so that it is have from cone ability, and owing to puncture casing 31 is empty Heart pipe, its front end formed crown, not only play sawtooth effect but also play fixation, operation time when puncture awl 32 enter cortical bone it After, exiting puncture awl 32, puncture casing 31 crown thrusts cortical bone makes it be difficult to displacement, it is ensured that the insertion of guide pin 4.Wear During thorn cone 3 puncture, puncturing awl 32 and puncture casing 31 in puncture awl 3 all has an effect in coning sclerotin, and prior art In paracentesis trocar, owing to its trocar sleeve front end is circular, is not taper, himself does not bore broken skin mass-energy power, only wear Pricker has the effect in coning sclerotin, and only by puncture needle taper hole, but puncture needle diameter is less than puncture casing, wears after puncture needle taper hole Thorn sleeve pipe round end enters laborious difficulty, the most harder cortical bone, so its effect is limitedly used to puncture inserts guide pin.? In practical operation, when spike pierces cortex backed off after random, the easy displacement of puncture casing, when can cause inserting guide pin, position is easily sent out Changing；Puncture awl 3 also has two effects: one adjusts guide pin 4 direction, when X-ray examination after guide pin 4 insertion in operation Find that guide pin 4 access point is correct and time poor direction is true, insert through guide pin 4 with the puncture casing 31 of puncture awl 3, its sawtooth bore into Cortical bone is a little and thrusts sclerotin, and guide pin 4 exits in surface of bone, but and not exclusively exits in puncture casing 31, adjustment puncture set Pipe 31 direction, then return this guide pin 4 slotting, complete the adjustment in guide pin 4 direction.Its two conversions seal wire 9 acts on, guide pin 4 position After Zhun Que, owing to guide pin 4 is relatively thick, general hollow pedicle through hole is relatively thin, so to be converted into elongated seal wire 9.Again with wearing Thorn sleeve pipe 31 inserts along guide pin 4, and its sawtooth coning sclerotin is interior and fixes, and extracts guide pin 4 out, then by seal wire 9 along puncture casing 31 Insert in the duct of sclerotin Central Plains guide pin 4, then hollow pedicle nail and hollow upper nail device 7 are screwed into along seal wire 9, it is ensured that lead Pin 4 changes seal wire 9 and invariant position.

2, expansion core 5 and put nail pilot sleeve 6 structure and using method all with in minimal invasion pedicle screw-rod of the prior art In fixed system, expansion core 5 used follows closely pilot sleeve 6 difference with putting.Structure is different: expansion core of the prior art is provided with hands Handle, and expand core without handle is set and length ratio to put nail pilot sleeve 6 long, grow part and become Handheld Division, prior art In nail pilot sleeve of putting be provided with and put nail parallel two U-lags of the horizontal handle of pilot sleeve, and now put nail pilot sleeve 6 without Arranging two U-lags, handle is equal with sleeve entrance.

Using method is different: using method of the prior art is, expansion core inserts along guide pin and expands soft tissue passage backed off after random, Putting nail pilot sleeve makes the horizontal handle of expansion core embed in the U-lag putting nail pilot sleeve along expansion core insertion fit again, is combined into one, The most stretched core through hole inserts along guide pin, and after expansion core conflict surface of bone, lower pressure puts nail pilot sleeve handle so that it is continue lower insertion, Its crown stings surface of bone, then pulls up horizontal handle and extract expansion core.And above-mentioned general put spike devices using method be: expansion core 5 edge Guide pin 4 inserts and expands soft tissue, conflicts after surface of bone, puts nail pilot sleeve 6 and directly inserts along expansion core 5, and its crown stings Surface of bone, holds expansion core 5 Handheld Division and extracts expansion core 5.Obviously, compared with using method of the prior art, there is operation Simple, fast advantage.Compared with other sleeve type device in prior art, the tooth that barrel forward end is arranged, except playing Effect this crown outer intercepting and protecting soft tissue during putting hollow nail stings in cortex, also can ensure that to put nail pilot sleeve 6 remote End is without displacement, it is ensured that guide pin 4 inlet point is positioned at center, when hollow nail is in time putting nail pilot sleeve 6 and insert, it is ensured that nail tip Enter guide pin 4 access point.

3, upper nail device 7 is with the upper nail device in minimal invasion pedicle screw-rod internal fixation system of the prior art the most not Identical.The strut of upper nail device of the prior art is solid, can only put solid pedicle nail, without lock nut on turncap, twists Easily exit during pedicle nail, loosen.The strut 71 of above-mentioned upper nail device 7 is hollow, both can put hollow nail and also can put solid nail, Lock nut, lock nut locking turncap 75 is had to lock hammerlock pipe 74 simultaneously, do not moved back when twisting pedicle nail on turncap 75 Go out, non-loosening, operate safety and stability.

From the point of view of using the above-mentioned general data analysis putting the 518 example lumbar vertebra compression fracture Minimally Invasive Surgerys that spike devices completes, wherein put nail Totally 3115 pieces, rate of accuracy reached 98.3%, and have compared with existing open surgery that operating time is short, go out insufficiency of blood, the hospital stays short Etc. advantage, concrete correction data is as follows:

Operating time: open surgery is 60～180 minutes, average 91 minutes；Use the above-mentioned general Minimally Invasive Surgery putting spike devices It is 30～70 minutes, average 52 minutes.

Amount of bleeding: open surgery is 100～600ml, average 260ml；Use above-mentioned general put spike devices Minimally Invasive Surgery be 15～30ml, average 25ml.

Hospital stays: open surgery is 15～21 days, average 14 days；Using the above-mentioned general Minimally Invasive Surgery putting spike devices is 6～14 My god, average 9 days.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-mentioned reality Execute example.To those of ordinary skill in the art, the improvement obtained by under without departing from this utility model technology concept thereof Also protection domain of the present utility model is should be regarded as with conversion.

Claims (8)

1. for Wicresoft's soft-tissue expansion assembly of Pedicle Screw, including puncture awl, guide pin, expansion core with put nail Pilot sleeve, it is characterised in that: described expansion core includes the cylinder along axis with guide pin through hole, cylindrical external diameter with The nail seat external diameter of pedicle screw is identical；Cylindrical one end is cone, and the other end is Handheld Division.

Wicresoft the most according to claim 1 soft-tissue expansion assembly, it is characterised in that put nail pilot sleeve described in: and include edge Having the cylinder of through hole on axis, one end of cylinder is band saw dentation, and the other end is fixedly connected with the first hand-held horizontal handle, The length of cylinder is less than the cylindrical length of expansion core.

Wicresoft the most according to claim 2 soft-tissue expansion assembly, it is characterised in that put nail pilot sleeve through hole described in: Internal diameter is identical with the rivet nut external diameter of pedicle screw, and the length of described cylinder is more than the rivet nut of pedicle screw, nail seat and can roll over Disconnected long-armed total length.

Wicresoft the most according to claim 1 soft-tissue expansion assembly, it is characterised in that: described puncture awl includes puncture casing With puncture awl, puncture casing is hollow pipe, and the front end of puncture casing is taper, and the rear end of puncture casing is provided with holding of expanding Portion, puncture awl is needle-like, punctures awl and inserts in puncture casing, and the front end puncturing awl is taper, punctures the tail end of awl It is connected with the hand grip portion of puncture casing by detachable attachment mechanism, after puncture awl backshank end is connected with the hand grip portion of puncture casing The conical points of puncture awl front end exposes puncture casing front end and the taper with puncture casing front end coincide.

Wicresoft the most according to claim 4 soft-tissue expansion assembly, it is characterised in that: hollow expansion shape in described hand grip portion Becoming accommodating hole, described detachable attachment mechanism includes that the female thread being located in described accommodating hole, the tail end of described puncture awl expand And it is provided with the external screw thread mated with described female thread.

Wicresoft the most according to claim 4 soft-tissue expansion assembly, it is characterised in that: the surface of described puncture casing and leading The surface of pin is equipped with scale.

Wicresoft the most according to claim 4 soft-tissue expansion assembly, it is characterised in that: the front end of described puncture casing is provided with The Rhizoma Sparganii tooth of the cortex that opens seam for rotary drilling.

Wicresoft the most according to claim 1 soft-tissue expansion assembly, it is characterised in that: described guide pin is needle-like, guide pin table There is scale in face.