CN104771221B - A kind of intramedullary nail and its special guidance system for being used to insert target bone - Google Patents
A kind of intramedullary nail and its special guidance system for being used to insert target bone Download PDFInfo
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- CN104771221B CN104771221B CN201510194899.XA CN201510194899A CN104771221B CN 104771221 B CN104771221 B CN 104771221B CN 201510194899 A CN201510194899 A CN 201510194899A CN 104771221 B CN104771221 B CN 104771221B
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- intramedullary nail
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Abstract
The invention provides a kind of intramedullary nail and its special guidance system for being used to insert target bone, described intramedullary nail is substantially in " 7 " font bending shape, and is extended from slightly tapered to distal end；The near-end of described intramedullary nail has is preset with duct in the plane chimeric with combined steel plate, proximal face, for penetrating Kirschner wire, screw or fixed suture；Described intramedullary nail proximally and distally between be corrugated arcuate structure, and provided with some multidirectional locking screws, intramedullary nail can be tightly fastened with backbone's sclerotin for squeezing into after corresponding screw.Described special guidance system is docked and fixation for auxiliary intra medullary nail with the accurate of combined steel plate, while screw is squeezed into correct fixed-direction by guiding.Being realized using the accurate guide effect of above-mentioned intramedullary nail and its special guidance system can prevention of postoperative reduction of the fracture loss, the Accessory injury that operation technique can be avoided to bring again, so as to reach good clinical rear effect.
Description
Technical field
The present invention relates to trauma fracture Internal fixation technology field, more particularly to a kind of intramedullary nail for being used to insert target bone and its
Special guidance system, be particularly suitable for use in treatment proximal humeral fracture.
Background technology
With fracturing, loose gerontal patient often easily fractures, and is caused more by Mild Violences such as tumbles, classification of fracture and
Fracture fragment displacement degree often has larger difference.At present, clinically there are multiple therapy methods for such fracture, but depend on
Patient age, classification of fracture and local soft tissue condition.
Especially for proximal humeral fracture, in order to the multiple fracture block resets of proximal humerus and fixations, generally use gram
The multinomial technology such as family name's pin, steel plate, intramedullary nail.Utilize existing above-mentioned technique for fixing, although can also make union, but still have not
The weak point of solution.Mainly it is disadvantageous in that：For clinically common complex proximal humeral fractures type, especially companion
Have osteoporosis person, fixed using steel plate screw and might have fixed not firm and move back nail risk, in addition cause steel plate deformed or
It is broken, and inserts the process of steel plate and often result in more serious fracture surrounding soft tissue damage, fracture region blood certainly will have been aggravated
The destruction of pipe, causes the problem of fracture delayed union or even disunion.And when using conventional Intramedullary nailing, generally require from the upper arm
Bone articular surface is squeezed into, and causes damage of articular surface, while damage also can be caused to proximal humerus shoulder sleeve structure, influence patient is postoperative
Shoulder joint function recovery effects, and intramedullary nail anti-torsion effect is poor, often can not effectively be fixedly secured the multiple bone of proximal humerus
Fragment is rolled over, so as to reduce the firmness of fracture fixation, serious patient is even more so for osteoporosis, reduces fracture
Healing effect.
The content of the invention
It is an object of the present invention to solve existing fracture fixation technology, to there is fixation insecure, easily to fracture week
Enclose soft tissue and there is provided a kind of intramedullary nail and its special guidance system for being used to insert target bone the problem of damage is caused in joint.It is logical
Cross the intramedullary nail and guidance system is used cooperatively, above technique for fixing can be overcome the shortcomings of, both intramedullary nail and steel plate is had concurrently
While advantage, the risk for causing postoperative complication and fracture fixation failure is evaded, has improved the therapeutic effect of operation.
To achieve the above object, the present invention provides a kind of intramedullary nail and its special guidance system for being used to insert target bone, institute
The intramedullary nail stated substantially is in " 7 " font bending shape, and is extended from slightly tapered to distal end；The near-end of described intramedullary nail has and group
Close and be preset with duct in the chimeric plane of steel plate, proximal face, for penetrating Kirschner wire, screw or fixed suture；Described
Intramedullary nail proximally and distally between be corrugated arcuate structure, and provided with some multidirectional locking screws, for squeezing into correspondence
Screw after intramedullary nail can be tightly fastened with key sclerotin.
As the further improvement of above-mentioned technical proposal, the Qian He between the near-end and combined steel plate of described intramedullary nail is put down
Face is provided with the groove structure and connecting screw hole that are fitted and fixed with, for by Kirschner wire with attachment screw is by intramedullary nail and combines steel
Plate is fixedly secured.
As the further improvement of above-mentioned technical proposal, the Qian He between the near-end and combined steel plate of described intramedullary nail is put down
Face is ellipse, the intramedullary nail have above and below the screw that is provided with central area on combined steel plate of two connecting screw holes match.
As the further improvement of above-mentioned technical proposal, have in the middle part of described intramedullary nail and lock screw at least one to have
There are a kind of internal thread or circular wedge-shaped groove structure.
As the further improvement of above-mentioned technical proposal, there are transversely arranged at least two on described intramedullary nail proximal end plane
Locate kirschner pin hole, for penetrating Kirschner wire fixation sclerite after the reduction of the fracture.
As the further improvement of above-mentioned technical proposal, described intramedullary nail bending part has at least one or locked at two spiral shell
Hole is diagonal fixing threaded hole, for fixing humeral head sclerite by squeezing into lock screw.
As the further improvement of above-mentioned technical proposal, the locking screw of described intramedullary nail bending part have internal thread or
Circular wedge-shaped groove structure, is fixed to squeeze into lock screw.
As the further improvement of above-mentioned technical proposal, described internal thread or the pitch of circular wedge-shaped slot are in 0.6mm-
1.2mm between.
It is used to insert the intramedullary nail of target bone based on above-mentioned, present invention also offers a kind of special guidance system, this is special to lead
Docked and fixation with the accurate of combined steel plate for auxiliary intra medullary nail to system, while screw is squeezed into correct fixation side by guiding
To；It includes intramedullary nail-steel plate holder, and top is fitted with combined steel plate, and other arms be arranged in parallel apart from bone pulp cavity；Top
There are several pilot holes on end and arm, match for the locking screw respectively with intramedullary nail connecting screw hole and distal end.
Described guidance system changes the inserting needle path of conventional intramedullary nails, and being difficult to for operation fixation is reduced to greatest extent
The Accessory injury (ligament in joint and important accessory structure etc.) gone beyond, it is substantially effectively that two kinds of steel plate and intramedullary nail is solid
Fixed advantage combines, while also dexterously overcoming mutual shortcoming.
Described intramedullary nail determines its size and shape according to the target medullary canal of insertion, and near-end to the distal end of the intramedullary nail is in
Corrugated stock, and run through on the stock provided with several fixing threaded holes；On described steel plate have connecting portion groove and
Through the connecting screw hole and fixing threaded hole of the plate, be respectively used to wear attachment screw and fixing screws, with intramedullary nail connecting portion
The size and shape of groove be fitted together to what plane was determined according to the intramedullary nail, to accommodate the connection of intramedullary nail near-end in the way of chimeric
Face, the connection for being shaped as nonrotary of connecting portion forms the connection of angle stabilization between steel plate and intramedullary nail；And size
The attachment screw determined with shape, so as to the top of the target part that is positioned at bone with desired alignment when steel plate and intramedullary nail
When, attachment screw can be made to enter the target part of intramedullary nail via the connecting screw hole on steel plate, and enter the connection spiral shell of intramedullary nail
In nail.
When fracture being fixed using above-mentioned intramedullary nail, intramedullary nail is inserted in the spinal canal of fractured bone first, and leads to
The fixing screws that are worn on intramedullary nail are crossed by itself and bone fixation；Then by Interal fixation in the target part of bone to be treated, utilize
Steel plate is connected by the attachment screw of angle stabilization with intramedullary nail, so that the fragment of fracture is fixed together, to stablize what is be broken
Bone portion.
A kind of advantage of intramedullary nail and its special guidance system for inserting target bone of the present invention is：
Described intramedullary nail neck is the arc of bending, oblique by outside after its major tubercle especially for proximal humerus
Row is squeezed into, and humerus facies articularis capituli is not destroyed, while avoiding supraspinous muscle stop, it is to avoid in proximal humerus shoulder sleeve structural damage, marrow
Special fixing threaded hole is provided between nail and combined steel plate, is locked by the fixing screws worn so that steel plate-intramedullary nail combination
It can be tightly fastened in fracture site.Intramedullary nail inserts long ossis, and good fixation is played to cripetura or lateral displacement,
The intramedullary nail equivalent to one " ground " effect, based on this so that steel plate can be stablized by the fixing screws worn
The sclerite disperseed around fixed fracture region, corrects the displacement such as rotating separation, and bonding crack line tying technology can be very good to maintain
The stabilization of fracture area.Meanwhile, a wide range of cleavage fracture surrounding soft tissue, energy are not all needed when intramedullary nail and combined steel plate are inserted
The supply of the enough fracture region blood of protection well.So, made using the accurate guiding of above-mentioned intramedullary nail and its special guidance system
With the minimally invasive of operation is realized, the problem of postoperative is lost both is solved, the fixation of surrounding bone folded block can be maintained again, may be used also
To avoid larger Interal fixation to the fracture end ischemic problem caused by the excessive destruction of soft tissue, so as to reach good face
The rear effect of bed.
Brief description of the drawings
Fig. 1 is the structural representation of the intramedullary nail in the embodiment of the present invention.
Fig. 2 is the side sectional view of the intramedullary nail shown in Fig. 1.
Fig. 3 is the combined steel plate structural representation in the embodiment of the present invention.
Fig. 4 is the structural representation of the guidance system in the embodiment of the present invention.
Fig. 5 is, using the guidance system shown in Fig. 4, the intramedullary nail and combined steel plate in the embodiment of the present invention to be fixed on
Schematic diagram in humerus ossis.
Reference
1st, intramedullary nail 2, combined steel plate 3, attachment screw
4th, guidance system 5, connecting screw hole 6, fixing threaded hole
7th, kirschner pin hole 8, pilot hole 9, near-end connection plane
10th, groove 11, proximal humerus 12, fixing screws
Embodiment
With reference to the accompanying drawings and examples to a kind of intramedullary nail and its special guiding for being used to insert target bone of the present invention
System is described in detail.
As shown in Figure 1, 2, a kind of intramedullary nail for being used to insert target bone of the invention is a special moulding intramedullary nail 1,
Described intramedullary nail is substantially in " 7 " font bending shape, and is extended from slightly tapered to distal end；The near-end of described intramedullary nail and remote
The substantially structure of undulate between end, for inserting ossis.The near-end of described intramedullary nail has chimeric with combined steel plate
Near-end is connected and is preset with duct in plane 9, proximal face, and the steel wire, screw or similar assembly of the intramedullary nail are fixed for inserting,
Including near-end connection plane and distal end flexing.One connects the combined steel plate that plane 9 contacts fixation with intramedullary nail near-end, there is porous
Structure and radian, are adapted with cortex of bone and provide at least one screw to insert screw or similar assembly, by combined steel plate with
Intramedullary nail is connected.
Intramedullary nail based on said structure, the near-end connection plane 9 of described intramedullary nail near-end vertically is ellipse
Shape, offers in near-end connection plane 9 and one or more is used for inserting attachment screw so as to by intramedullary nail and combined steel plate
Combine fixed connecting screw hole 3.The number of connecting screw hole 3 in the present embodiment is two.In addition, connecting plane in the near-end
On 9, one or more kirschner pin holes 7 being used for as Kirschner wire are further opened with, the number of kirschner pin hole 7 is two in the present embodiment
It is individual.
As shown in Fig. 2 horizontally vertical direction bends and extended downwardly between the near-end of the intramedullary nail 1 and distal end
Part is referred to as neck, and intramedullary nail near-end connection plane 9 at an angle, about 100 °~130 °, makes intramedullary nail-steel plate group with neck
Meet the anatomical features of respective target bone after conjunction.Near-end connection plane 9, which has, one or more is used for inserting fixing screws so as to solid
Determine the fixing threaded hole 6 of sclerite.The number of the fixing threaded hole 6 of neck is two in the present embodiment.The centre of the intramedullary nail 1
Portion, which is also offered, one or more is used for inserting fixing screws so as to by whole intramedullary nail 1 and the key fixing threaded hole being fixedly secured
6, the number of the fixing threaded hole 6 of intramedullary nail pars intermedia is three in the present embodiment.In the present embodiment, the intramedullary nail 1
Distally, also known as afterbody, is the structure that S types are tapered, the special plasticity is easy to beat intramedullary nail from femoral head major tubercle side
Enter in ossis, and maintain stabilization of the intramedullary nail in pulp cavity.
Connecting screw hole and fixing threaded hole on the intramedullary nail have the diameter of fixed size, to connect spiral shell with corresponding
Nail and fixing screws match, and each screw is internal thread or circular wedge-shaped groove structure, this with the respective screws head of a nail
Screw thread matches on screw thread or rivet nut.
Described combined steel plate is also referred to as the outer fixation steel plate of marrow, with intramedullary nail can contact and be fixedly secured by certain way,
Simultaneously can be by the screw through steel plate or kirschner pin hole drivescrew or Kirschner wire, to fix the sclerite of humerus head end.
As shown in figure 3, the stabilization in order to further maintain femoral head end comminuted fracture block, in the present embodiment, the edge of the combined steel plate
Part is provided with six kirschner pin holes, for sclerite to be fixed through steel wire or suture.Specific embodiment is：Such as
Shown in Fig. 3, combined steel plate 2 fit fracture region side have with intramedullary nail near-end connect plane be adapted it is oval or similar
Groove 10, provided with the duct for respectively allowing for inserting attachment screw and Kirschner wire in groove 10, and each duct on combined steel plate
The duct for connecting plane with intramedullary nail near-end matches.I.e. when combined steel plate is contacted in the desired manner with intramedullary nail connection plane
After combination, it can allow Kirschner wire and attachment screw through both kirschner pin hole 7 and connecting screw hole 5 simultaneously, now, should first insert
Kirschner wire, temporarily maintains steel plate and the metastable position of intramedullary nail, is then further torqued into attachment screw both are stable solid
It is fixed.In addition, the combined steel plate is being equipped with several fixing threaded holes 6 along its edge.In the present embodiment, for through admittedly
Determine screw fixing threaded hole 6 number be four, for through attachment screw with the connecting screw hole of junction steel plate and intramedullary nail
Number is two.They are respectively positioned at the corner of combined steel plate and the position in center.
As shown in figure 3, in the present embodiment, in order to further reduce the pressure of steel plate outside marrow to periosteum, the steel plate it is outer
Shape is made into the profile for being close to anatomically bone.I.e. the combined steel plate 2 is rectangle as viewed from front, may be designed as square,
Rectangle, circle or oval.Going the one side of its dorsad fractures from the side has certain radian, i.e. described combined steel plate
2 be in concave structure towards the one side of fracture site, and the radian of described concave surface and fracture site surface matches, to fit
Bone profile, and wrap up fracture fragments.Its arc-shaped concave, which is designed, meets the anatomical features of bone, with increase steel plate to sclerite or
The containing and compressing of bone piece are crushed, is conducive to Micro-operation, solving sclerite comminuted fracture can not make what is be screwed to ask
Topic.Further to reduce the pressure that device is formed to periosteum, the combined steel plate has wavy in the concave surface towards periosteum side
Surface, to reach the purpose of Limited contact.
After combined steel plate and intramedullary nail near-end connection plane contact, one or more Kirschner wires are inserted by kirschner pin hole
The stabilization for maintaining intramedullary nail-steel plate to combine, the attachment screw being further torqued into is connected by its own screw thread with intramedullary nail near-end
The pitch of the connecting screw hole on connecting screw hole and steel plate in plane is adapted so that combined steel plate and intramedullary nail reach stable solid
Fixed purpose.Described internal thread or the pitch of circular wedge-shaped slot may be provided between 0.6mm-1.2mm.
Intramedullary nail and combined steel plate based on said structure, the specification of the combined steel plate may be designed as 30mm*25mm, its
The groove thickness that centre is contacted with intramedullary nail can between 1mm between 2mm, the steel periphery thickness can between 3mm to 4mm it
Between.The length of intramedullary nail is about 20cm, and random length can be designed to according to demand.It is made preferably with titanium alloy material.Institute
The angle stated between the axis and surface of steel plate center line for each fixing threaded hole 6 that the confession fixing screws that intramedullary nail 1 opens up are penetrated is
5 ° -10 ° so that the radial sensing combined steel plate 2 of fixing screws being arranged in each fixing threaded hole 6.
As shown in figure 5, present invention also offers a kind of special guidance system of intramedullary nail, the guidance system is used to aid in marrow
Interior nail is docked and fixation with the accurate of combined steel plate, while screw is squeezed into correct fixed-direction by guiding；It include intramedullary nail-
Steel plate holder, top is fitted with combined steel plate, and other arms be arranged in parallel apart from bone pulp cavity；Have several on top and arm
Pilot hole, matches for the fixing threaded hole respectively with intramedullary nail connecting screw hole and distal end.Described guidance system changes biography
Unite the inserting needle path of intramedullary nail, reduce to greatest extent operation it is fixed be difficult to go beyond Accessory injury (ligament in such as joint and
Important accessory structure etc.), substantially effectively two kinds of fixed advantages of steel plate and intramedullary nail are combined, simultaneously
Also mutual shortcoming is dexterously overcome.
Using said structure intramedullary nail carry out skeletal fixation the step of be：For complicated fracture site, especially as
The type of proximal humeral fracture, after the reduction of the fracture, outside (the avoiding shoulder sleeve stop position) direct motion after head of humerus major tubercle
Intramedullary nail is squeezed into, after intramedullary nail enters fracture area distal end pulp cavity, it is fixed with key sclerotin by screw, fracture is maintained
Combined steel plate is fixed on humerus head end while reset, and is fixedly secured steel plate with intramedullary nail by special screw, so
Fixing screws are screwed into by the screw on steel plate afterwards and fix head of humerus surrounding fracture block portion position, are locked using multidirectional lock screw is stable
Intra medullary nail far-end and each position of tail end, and bonding crack line tying technology are determined, to maintain the stable of fracture area to fix.
Below by taking proximal humeral fracture as an example, with reference to Fig. 1-5, fractured using intramedullary nail-steel plate joint of the present invention
Fixed primary operational process is：
Step 1) case of proximal humeral fracture Neer partings two parts, three parts and four partial fractures during selection is clinical,
Allowing patient to be located at ray can be thoroughly on the sandy beach seat of operating table.With the shoulder of cushioned support patient, and the arm of fracture is placed on
On adjustable side stage or arm-rest frame, it is ensured that arm can fully be bent, the head of humerus is allowed to be exposed in front of acromion.
Step 2) the suitable otch of selection, exposure fracture region.By Indirect reduction and drawing suturing skill, stripper is used
Or fracture site is resetted using Kirschner wire as control-rod.If it is necessary, can in implants insertion process using gram
Fracture fragment is secured in position by family name's pin temporarily.Ensure that Kirschner wire will not hinder the insertion of intramedullary nail, can be fractured after reset
It is fixed.
Step 3) select suitable entry point to be punched in proximal humerus, preferable entry point is located at intertubercular sulcus midpoint
Afterwards outside 5mm away from upside humerus facies articularis capituli 10mm at, avoid supraspinous muscle stop and articular surface, insert Kirschner wire as mark,
Unilateral cortex of bone is opened by hollow boring bit or hole making drill.
Step 4) intramedullary nail 1 is assembled with guidance system 4, guidance system is laterally located, and make guidance system 4 and intramedullary nail
1 junction matches, and by attachment screw 3 by both stable fixations, is assembled by above-mentioned fixed form.Followed by
Guidance system 4 inserts intramedullary nail 1 as handrail from diagonal at the punching of proximal humerus 11, slightly twists guidance system 4 to incite somebody to action
Intramedullary nail 1 is advanced in ossis.As depth of needle gradually changes the angle of guidance system 4.When intramedullary nail 1 is advanced to fracture
Position, reseting fracture simultaneously continues to advance into backbone.Intramedullary nail 1 is checked in the anteroposterior position and lateral perspective of proximal humerus 11
Position.
Step 5) confirm after the satisfaction of intramedullary nail position, the pilot hole 8 being provided with by guidance system 4 inserts a trochar
Sub-assembly (including drill bushing and trochar), the pilot hole 8 for aiming at arm distal end through guidance system 4 does one small cut on skin
Mouthful, and careful separation is to bone surface, it is to avoid damage is caused to the neurovascular structure and soft tissue of surrounding.Promote trochar group
Component, bone surface is pushed against by trochar, takes out cannula needle.
Step 6) drill bit with a scale is inserted in the sleeve pipe after cannula needle is taken out, careful drilling drills through two layers of bone skin
Matter, until bit point of the drill has just worn out inner side cortex.Confirm bit location using C-arm, drill bushing be firmly pressed into cortex,
To ensure that measurement is accurate.
Step 7) after the completion of drilling, required screw length data are read from drill bit with a scale, remove drill bit and
Drill bushing.Screwdriver is combined with fixing screws 12, fixing screws 12 are locked in intramedullary nail 1 in ossis by penetrating pilot hole 8
At the fixing threaded hole 6 being provided with so that intramedullary nail is further secured in ossis.For the fixation spiral shell of remaining intramedullary nail
Nail, repeats the above steps, is implanted into respectively at each fixing threaded hole 6 after a fixing screws 12, removes guidance system 4.
Step 8) treat that the far-end locking of intramedullary nail 1 is completed, remove guidance system 4.Connected by the near-end of intramedullary nail 1 in plane
The kirschner pin hole 7 of setting inserts two parallel Kirschner wires, while the reduction of the fracture is maintained, by combined steel plate 2 by above-mentioned
The joint face accurate combination of Kirschner wire and intramedullary nail 1.Combined using screwdriver with attachment screw 3, attachment screw 3 is twisted into such as steel plate 2
With in the connecting screw hole 5 that is set on intramedullary nail 1, steel plate 2 to be combined and intramedullary nail 1 it is stable it is fixed after, extract Kirschner wire out.
Step 9) humeral head reduction of the fracture state is maintained, by the fixing threaded hole 6 for protecting sleeve to be screwed into combined steel plate surrounding
It is interior, drill bit with a scale is inserted in sleeve and is carefully drilled, until reaching the plane of head of humerus subchondral bone.When drilling is completed
Afterwards, the screw length needed for being read from drill bit with a scale, removes drill bit and sleeve, screwdriver is combined with fixing screws 12, will
Fixing screws 12 are fixed in humerus by penetrating combined steel plate 2.
In order to maintain the replacement and fixation of proximal humeral fracture fragment, for inserting each screw way of steel wire or screw all with poly-
To 5 °~10 ° angles in the greater tubercles of humerus portion.So that the angle of fixing screws all Cheng Juxiang steel plates of corresponding fracture site is squeezed into,
To obtain a generally radial screw permutation and combination.Screw is fixed with steel plate into this angle, adds resistance to vertical
Withdrawal force.
Furthermore it is possible to improve the stability of fracture site fixation by way of being implanted into suture.Can not by one or more
The tendon attachment region that tailor-tacking line inserts supraspinous muscle, infraspinous muscle and subscapular muscle is absorbed, will be stitched using the suture hole on combined steel plate 2
Line is connected on combined steel plate 2, and judges final fixed effect using x-ray inspection.The duct passed through for suture or steel wire,
Its diameter is between 0.8mm-1.2mm.The present invention can select the different intramedullary nail of length according to different classification of fracture, and carry
The combined steel plate of different fracture fixation screws.And the intramedullary nail and combined steel plate of different model link together with identical
With specification.Meanwhile, usable flat head screw is fixed, and allows musculature and stndon sheath from ailhead friction.In combined steel plate
Corresponding depressed part can be set in edge at each mounting hole, and each depressed part through its cerclage steel wire or suture to providing just
True positioning, to reduce the risk that each cerclage steel wire or suture wear and tear caused by friction.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (6)
1. a kind of intramedullary nail for being used to insert target bone, it is characterised in that the intramedullary nail is substantially in " 7 " font bending shape, and by
It is thick tapered to distal end extension；The near-end of described intramedullary nail has the plane chimeric with combined steel plate, is preset with the proximal end plane
Duct, for penetrating Kirschner wire, screw or fixed suture；Described intramedullary nail proximally and distally between be corrugated arc
Shape structure, and provided with some multidirectional locking screws, can be closely solid with key sclerotin by intramedullary nail for squeezing into after corresponding screw
It is fixed；
It is diagonal fixing threaded hole that described intramedullary nail bending part, which has at least one or screw is locked at two, for by squeezing into locking
Screw fixes humeral head sclerite；
Chimeric plane between the near-end and combined steel plate of described intramedullary nail is ellipse, and the chimeric plane is provided with two up and down
The screw that connecting screw hole is provided with central area on combined steel plate matches.
2. the intramedullary nail according to claim 1 for being used to insert target bone, it is characterised in that the near-end of described intramedullary nail is embedding
Close plane and be provided with kirschner pin hole and connecting screw hole, for attachment screw that intramedullary nail and combined steel plate is firm by Kirschner wire
It is fixed.
3. the intramedullary nail according to claim 1 for being used to insert target bone, it is characterised in that have in the middle part of described intramedullary nail
The wedge shaped slot structure of lines of screw internal thread is locked at least one.
4. the intramedullary nail according to claim 1 for being used to insert target bone, it is characterised in that described intramedullary nail proximal end plane
On have kirschner pin hole at transversely arranged at least two, for penetrating Kirschner wire fixation sclerite after the reduction of the fracture.
5. the intramedullary nail according to claim 1 for being used to insert target bone, it is characterised in that described intramedullary nail bending part
The wedge shaped slot structure of texture of screw internal thread is locked, is fixed to squeeze into lock screw.
6. being used for according to claim 3 or 5 inserts the intramedullary nail of target bone, it is characterised in that the spiral shell of described internal thread
Away between 0.6mm-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194899.XA CN104771221B (en) | 2015-04-22 | 2015-04-22 | A kind of intramedullary nail and its special guidance system for being used to insert target bone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510194899.XA CN104771221B (en) | 2015-04-22 | 2015-04-22 | A kind of intramedullary nail and its special guidance system for being used to insert target bone |
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| CN104771221A CN104771221A (en) | 2015-07-15 |
| CN104771221B true CN104771221B (en) | 2017-10-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105105841A (en) * | 2015-07-20 | 2015-12-02 | 南方医科大学 | Preparation method for navigation template for guiding implantation of internal fracture fixation steel plate |
| CN107789098A (en) * | 2016-09-05 | 2018-03-13 | 财团法人金属工业研究发展中心 | Femur support meanss |
| CN106344141B (en) * | 2016-10-20 | 2024-01-12 | 中国人民解放军总医院 | Two-way fixed steel plate and backbone fixing system |
| US20220378483A1 (en) * | 2016-10-20 | 2022-12-01 | Tianjin Zhengtian Medical Instrument Co., Ltd | Bidirectional fixation steel plate and a bone shaft fixation system |
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| FR2948555B1 (en) * | 2009-07-28 | 2012-05-04 | D L P Sarl | INTRAMEDULAR NAIL |
| CN204655091U (en) * | 2015-04-22 | 2015-09-23 | 熊静 | A kind of intramedullary pin for inserting target bone and special guidance system thereof |
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| US7588577B2 (en) * | 2004-07-15 | 2009-09-15 | Wright Medical Technology, Inc. | Guide assembly for intramedullary fixation and method of using the same |
| JP4922184B2 (en) * | 2004-12-23 | 2012-04-25 | ストーブリ，ハンス，ウルリッヒ | Bone fixation device |
| EP1855605B1 (en) * | 2005-01-28 | 2014-01-08 | Biomet C.V. | Nail plate system |
| US20070083202A1 (en) * | 2005-09-20 | 2007-04-12 | Donald Eli Running | Intramedullary bone plate with sheath |
| KR101505568B1 (en) * | 2007-09-27 | 2015-03-24 | 신세스 게엠바하 | Nail-plate combination |
| GB2473874A (en) * | 2009-09-29 | 2011-03-30 | Peter Giannoudis | Surgical plate and nail implant |
-
2015
- 2015-04-22 CN CN201510194899.XA patent/CN104771221B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2948555B1 (en) * | 2009-07-28 | 2012-05-04 | D L P Sarl | INTRAMEDULAR NAIL |
| CN204655091U (en) * | 2015-04-22 | 2015-09-23 | 熊静 | A kind of intramedullary pin for inserting target bone and special guidance system thereof |
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| Publication number | Publication date |
|---|---|
| CN104771221A (en) | 2015-07-15 |
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