CN206852655U - Fractured near end of thighbone improves locking steel plate inner fixing device - Google Patents
Fractured near end of thighbone improves locking steel plate inner fixing device Download PDFInfo
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- CN206852655U CN206852655U CN201720069536.8U CN201720069536U CN206852655U CN 206852655 U CN206852655 U CN 206852655U CN 201720069536 U CN201720069536 U CN 201720069536U CN 206852655 U CN206852655 U CN 206852655U
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Abstract
Fractured near end of thighbone improves locking steel plate inner fixing device, is related to technical field of medical instruments.The device includes fixation steel plate, facture fixation device, Interal fixation nail, interim steel plate fixing glue, bushing type guider, facture fixation device, Interal fixation nail, interim steel plate fixing glue in fixation steel plate hole respectively by entering, fixation steel plate is integrated with facture fixation device using taper thread locking, and Interal fixation nail is with fixation steel plate also using locking design.The utility model is simple to operate, practical, makes full use of the biological characteristics and mechanical characteristic of live body bone, lets nature take its course, do things by following nature, complies with the function adaptability of bone, and access expansion is rebuild to greatest extent.General idea utilizes reverse thinking, and it is a kind of significant exploration that this orthopaedics problem is treated to old fractured near end of thighbone.
Description
Technical field
It the utility model is related to technical field of medical instruments, and in particular in a kind of fractured near end of thighbone improvement locking steel plate
Fixing device.
Background technology
Due to the quickening of aging population process, fractured near end of thighbone incidence gradually increases, and U.S.'s statistics in 2000 is complete
Therefore class fracture receives treatment to the people of U.S.A about 350,000, more than account for total population 1.2%.China does not have strict statistics, such as by U.S.
The population ratio of state calculates China, and such fracture patient about should be 1,700,000 every year.Apparatus used in the country is all at present
Foreign technology, most of is import, is partly imitation.Such patient is largely the elderly, due to old mostly weak and sickly
And osteoporosis, there are some patients to abandon treatment or doctor because of refusal operation of blanding out, and select thus breath or half event
The expectant treatment of breath.Have the fracture of neck of femur of displacement, at present the preferred joint replacement of over-65s, although the operation at present very into
Ripe but this is a kind of helpless technology, wound, risk are all big, though the internal fixation device of intertrochanter fracture of femur constantly updates,
It is the mortality that treatment to elderly patients still has 20%, authority's statistics osteoporotic fracture mortality is up to 50%, therefore sclerotin
The case that sponginess Procedure on Intertrochanteric Fracture in Aged is forced to carry out joint replacement is more and more.The patient of reported in literature 20% is one
It is dead in year.50% patient needs other people to nurse all the life, and recent expert proposes that such fracture is the challenge of field of orthopaedics, again
It is the direction of research.
The apparatus species pattern for being used to treat fractured near end of thighbone used both at home and abroad at present is various, treats hip bone instantly
The apparatus and arthroscopic technique of folding have significant progress than three wing nail, the hip screw of early stage in mechanical performance, but
It is that there is also defect：
1st, the Medullary fixation device using gamma nail as representative, facture fixation device diameter is excessive, single diameter of following closely in 12mm or so,
Double nail diameters are in 10mm or so.Spike, major thread are that but it ignores live body bone in order to strengthen hold and improve fixing intensity
Biological characteristics, i.e. bone tissue stress when deposit, otherwise will be gradually resorbed, because what apparatus will fix holding is lived
Live body bone, is not steel, wooden unit, and excessive screw not only breaks up the blood fortune of femoral head, also femur header structure caused irreversible
Destruction, the caput femoris necrosis that should not occur happens occasionally.After nearly folding end stress, most stress are inhaled by the same screw thread of knife
Receive, partial reaction in bone tissue, is absorbed bone tissue again after screw thread stress.Because the modulus of elasticity of steel nail is live body
5 times or so of cortex bone, be 10 times of cancellous bone or so, this just forms cutting phenomenon of the screw to bone, and this be one gradually
The vicious circle entered.Even if bedridden patient, the convergent force of its muscle is also at all times, although osteoporotic patient does not have
From bed, but fixation has failed, and this runs in the opposite direction with the hold pursued originally with enhancing stability.Due in marrow
Nail, facture fixation device are excessive, and Hidden blood loss is more and inevitable.
2nd, nail tail, which does not lock, more exacerbates fixed failure.With DHS（Dynamic hip screw）For the marrow external fixer of representative,
Nail tail use carriage, the purpose is to after near-end stress of fracturing to distally drawing close, Self-pressurizing agri, but also promote simultaneously and follow closely Caudad
Retreat, nail tail retreats the swing for causing nail, and now, more very, failure is inevitable for cutting of the screw to bone tissue.In addition, the device
The a diameter of 12.5mm of main nail, screw diameter problems of too similarly be present.
3rd, fracture of neck of femur treatment method general at present is that hollow lag screw is fixed, and preceding the 1/4 of this nail is threaded, after
Portion's non-threaded, nail tail band nut, principle is staking effect.Because cortex of bone is thin on the outside of near end of thighbone, tension and compression are cannot stand at all, i.e.,
Make be it is between twenty and fifty also can not strength tension and compression, otherwise the cortex of bone under the head of a nail can be crushed, or be absorbed, and cause solid failure.Separately
Outside, three pieces of nails are separate, and shearing resistance ability is extremely low, particularly middle-older patient, and femoral neck sclerotin is more loose, received in muscle
Under contracting effect, the broken ends of fractured bone necessarily has intercalation, and constriction is short, staking effect failure, fixed failure.Over-65s then preferred joint replacement.
Although the 4th, locking steel plate can Reconstruction of Proximal Femoral rock-steady structure, due to application be full thread nail, can produce
Stress shielding, stress concentration, that is, union is influenceed, and because drive screw is in stress concentration state all the time, therefore often occur
The fracture of nail.Locking steel plate general at present, Interal fixation nail need more than three pieces, and steel plate is long, and fixing glue quantity is excessive, hand
Art long incision, wound are big.
Based on the expection of patient and family members is far below to the therapeutic effect of old fractured near end of thighbone at present, particularly seriously
Osteoporotic fracture, authoritative statistics mortality are 50%.Although old fractured near end of thighbone patient is mostly weak and sickly,
But as long as life remains, fracture Regeneration and Repair should just be present, particularly intertrochanteric fracture, and blood fortune is abundant, clinical practice traction
Conservative therapy, as long as patient can coordinate, its cure rate is bone the main reason for surgical menopause Endodontic failure up to 100%
Matter is loose.How to utilize the biological characteristics of live body bone, solve the problem of osteoporotic fracture, rather than machinery live body
Bone works as parts repair, is a direction for being worth deeply probing into.
Utility model content
It is above-mentioned excessive, fixed for treating shaft diameter existing for the apparatus of fractured near end of thighbone in the prior art to solve
The fixed bad or technical problem such as failure, the design stress concentration of drive screw, stress shielding of nail, the utility model proposes one kind
Simple and reasonable fractured near end of thighbone improvement locking steel plate inner fixing device.
To achieve the above object, the technical solution adopted in the utility model is：In fractured near end of thighbone improvement locking steel plate
Fixing device, it is characterised in that including fixation steel plate, facture fixation device, Interal fixation nail, interim steel plate fixing glue, bushing type
Guider；
The top of fixation steel plate is provided with least three conical screw holes for being used to fix facture fixation device 2, each tapered thread
It is parallel to each other between the duct in hole, and the bottom with fixation steel plate is used for into angle, the bottom of fixation steel plate provided with least two
The taper thread hole of fixation steel plate fixing glue, the upper and lower side of fixation steel plate, which is respectively provided with, at least one to be used to fix interim steel plate fixing glue
Interim fixing hole, taper thread hole is vertical with the fixation steel plate at respective place with the duct of interim fixing hole；
The nail tail surface of facture fixation device carries common taper thread, and common taper thread is provided with tapered to the rivet nut between ailhead
Tapering transition, the fracture near-end rivet nut surface non-threaded of facture fixation device；
The nail tail of Interal fixation nail is provided with the common taper thread for being used for fixing with fixation steel plate；
Bushing type guider is hollow tubular member, and its one end is that can match and be screwed into the taper thread in conical screw hole.
The fixation steel plate is the rectangular patch part to match with junction bone shape, and its length is 70-80mm, and width is
12-15mm, thickness 3-5mm.
The taper thread hole is 3, and the distance between each taper thread hole in vertical direction is 14-15mm, the taper thread
Hole is 2-4, and the distance between each taper thread hole in vertical direction is 10mm, between adjacent taper thread hole and taper thread hole
The distance of vertical direction is 12mm.
The angle is 135-140 degree.
The fracture of the facture fixation device is remote, near-end rivet nut surface non-threaded, entire length 80-130mm, shaft diameter
For 4-6mm, the nail tail length degree with common taper thread is 11-12mm, and common taper thread specification is M8 × 1.
The taper of the tapering transition is 1:10, needed according to different for part conic transition or unitary tapered transition.
The part conic transition for the length in rivet nut between common taper thread and ailhead is 15-20mm one section
Pyramidal structure；Rivet nut generally pyramidal structure of the unitary tapered transition between common taper thread and ailhead.
The entire length of Interal fixation nail is 42mm, shaft diameter 4mm, the nail tail length degree with common taper thread
For 8mm, the specification of common taper thread is M6 × 1, and rivet nut surface full thread, the specification of screw thread is M3.5 × 1.3.
The entire length of the interim steel plate fixing glue be 10mm, rivet nut surface full thread, the specification of screw thread be M2.2 ×
0.8。
The entire length of described sleeve pipe formula guider is 80-120mm.
The utility model is specific when in use, according to the operation plan of doctor, after the lower determination contraposition of X-ray monitoring is satisfied,
The through periosteum of 5cm is cut at the outer side-lower 4cm of femoral greater trochanter from top to bottom, periosteum is done from top to bottom by the size of fixation steel plate
Lower stripping, subperiosteum tunnel is formed, is inserted into fixation steel plate, bushing type guider is accessed to a most upper cone for fixation steel plate
In shape screwed hole, the location-appropriate of positive location fixation steel plate under X-ray monitoring, while the extended line of bushing type guider is also appropriate
Afterwards, fixation steel plate is fixed by interim steel plate fixing glue.Determine a most upper conical screw hole and the 3rd taper on the outside of skin
The spacing of screwed hole, it is determined that after by bushing type guider direction skin now cut an osculum, separation soft tissue is screwed into bushing type
Guider, then have an X-rayed, the 3rd conical screw hole is also screwed into bushing type guider by this step.If most upper and the 3rd sleeve pipe
The extended line of formula guider is appropriate in femoral head and cervix, you can diameter 3.5mm guide pin is screwed into two bushing type guiders
3mm stops under femoral head.Extract guide pin and bushing type guider, then with the brill suitable with the corresponding conical screw hole of facture fixation device
Head expands cortex of bone on the outside of guide pin tunnel, so that facture fixation device rear portion thickening is partially threaded into, is screwed into along two guide pin tunnels
Facture fixation device, it is screwed into middle one piece of facture fixation device again by the above process.It is screwed into the steel plate of two pieces of lower ends by the above process again
Fixing glue.Monitored again under X-ray to determine fixing glue location-appropriate, take out interim steel plate fixing glue.Finally sew up the incision.Art
Afterwards under physician guidance, it can be helped depending on patient's condition second and turn suffering limb part heavy burden function exercise to fully recovering, interior fixation can not
Take out.
Good effect of the present utility model is：
1. the utility model bushing type guider is percutaneously screwed into, facture fixation device diameter is also obviously reduced, and wound is small, and bone is lost
Lose less, avoid Hidden blood loss, be applicable crowd and expand, apparatus low cost, medical expense declines.
2. nail of the present utility model, plate are fully locked, near end of thighbone rock-steady structure, the fracture fixation of non-threaded are rebuild
Nail avoids the stress concentration of facture fixation device and to the stress shielding between the broken ends of fractured bone, meets fracture again through fixed far and near end of fracturing
The raw biomethanics requirement repaired.
3. the appropriate increase of the angle of nail, plate, the ability of the more conducively conduction of stress, also increase resistance shearing, follows closely, is hardened
Conjunction portion tapering transition is strengthened, the stress concentration that can be liquidated herein, reduces the generation of broken nail, and final purpose is to reduce to enter femur
Head, the facture fixation device diameter of neck, make it reduce the structural destruction to femoral head and cervix while fixing intensity is not influenceed.
4. the utility model bone fixation nail diameter only has the 1/3-1/4 of presently used apparatus, to femoral head structural destruction
It is very small.Although the diameter of nail is obviously reduced, non-threaded nail is born using the biological characteristics of bone in muscular contraction force suffering limb part
Under the pressure effect of weight, proximate is drawn close after nail end bone tissue is absorbed, formation Self-pressurizing agri, and the engagement force between section increases
Greatly, stability strengthens, and the mutually locking that tail and steel plate are followed closely due to facture fixation device is designed, pact of the stress in nail suffered by near-end of fracturing
Conducted under beam to distal end, the stress of nail is greatly decreased, and nail end bone information terminates therewith.And the physiological stress between the broken ends of fractured bone stimulates,
Still exist, this is the most direct key factor of union again.
5. the utility model is simple to operate, practical, the biological characteristics and mechanical characteristic of live body bone are made full use of, it is suitable
It complies with the function adaptability of bone naturally, do things by following nature, and access expansion is rebuild to greatest extent.General idea utilizes reverse thinking,
It is a kind of significant exploration that this orthopaedics problem is treated to old fractured near end of thighbone.
Brief description of the drawings
Fig. 1 is combining structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of fixation steel plate of the present utility model.
Fig. 3 is Fig. 2 sectional side view.
Fig. 4 is Fig. 3 top view.
Fig. 5 is the structural representation of facture fixation device of the present utility model（Part conic transition）.
Fig. 6 is the structural representation of facture fixation device of the present utility model（Unitary tapered transition）
Fig. 7 is the structural representation of Interal fixation of the present utility model nail.
Fig. 8 is the structural representation of interim steel plate fixing glue of the present utility model.
Fig. 9 is the structural representation of bushing type guider of the present utility model.
Figure 10 is the application effect figure of bushing type guider.
Figure 11 is application effect figure of the present utility model.
In figure：1：Fixation steel plate；1-1：Conical screw hole；1-2：Taper thread hole；1-3：Interim fixing hole；2：Fracture fixation
Nail；2-1：Tapering transition；3：Interal fixation is followed closely；4：Interim steel plate fixing glue；5：Bushing type guider；α：The hole of conical screw hole
Angle between the bottom of road and fixation steel plate.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, but the utility model is not limited to specific embodiment.
Embodiment 1
As shown in figure 1, fractured near end of thighbone improves locking steel plate inner fixing device, including fixation steel plate 1, facture fixation device
2nd, Interal fixation nail 3, interim steel plate fixing glue 4, bushing type guider 5；
As shown in figs 2-4, fixation steel plate 1 is the rectangular patch part to match with junction bone shape, and its length is 70mm,
Width is 12mm, and thickness 3mm, top is provided with 3 conical screw hole 1-1 for being used to fix facture fixation device 2, each taper thread hole
Distance between 1-1 in vertical direction is 14mm, is parallel to each other between each conical screw hole 1-1 duct, and with fixation steel plate 1
Bottom be provided with 2 taper thread hole 1-2 for being used for fixation steel plate fixing glue 3 into 135 degree of angle α, the bottom of fixation steel plate 1,
Distance between each taper thread hole 1-2 in vertical direction is 10mm, in Vertical Square between adjacent taper thread hole and taper thread hole
To distance be 12mm, the upper and lower side of fixation steel plate 1 is respectively provided with an interim fixing hole for being used to fix interim steel plate fixing glue 4
1-3, taper thread hole 1-2 and interim fixing hole 1-3 duct are vertical with the fixation steel plate 1 at respective place；
As shown in figure 5, the nail tail surface of facture fixation device 2 carries common taper thread, common taper thread is to the nail between ailhead
Body is provided with tapered tapering transition 2-1, and tapering transition 2-1 is one section of cone in the rivet nut between common taper thread and ailhead
Shape structure, i.e. part conic transition, length 15-20mm, taper 1:10, the fracture near-end rivet nut surface of facture fixation device 2
Non-threaded；The entire length of facture fixation device 2 is 80mm, shaft diameter 4mm, and the nail tail length degree with common taper thread is
11mm, the specification of common taper thread is M8 × 1；
As shown in fig. 7, the entire length of Interal fixation nail 3 is 42mm, and shaft diameter 4mm, rivet nut surface full thread, spiral shell
The specification of line is M3.5 × 1.3, and nail tail is provided with the common taper thread for being used for fixing with fixation steel plate 1, with common taper thread
It is 8mm to follow closely tail length degree, and the specification of common taper thread is M6 × 1；
As shown in figure 8, the entire length of interim steel plate fixing glue 4 is 10mm, rivet nut surface full thread, the specification of screw thread is
M2.2×0.8；
As shown in figure 9, bushing type guider 5 is the hollow tubular member that length is 80mm, its one end is that can match and be screwed into
Taper thread in conical screw hole 1-1, using effect is as shown in Figure 10, and this design can ensure leading by hollow tube to greatest extent
The angle of pin, direction are accurate.
Application effect figure of the present utility model is as shown in figure 11, specifically when in use, according to the operation plan of doctor, X-ray
After determining that contraposition is satisfied under monitoring, the through periosteum of 5cm is cut at side-lower 4cm from top to bottom outside femoral greater trochanter, by fixation
The size of steel plate 1 does subperiosteum stripping from top to bottom, forms subperiosteum tunnel, is inserted into fixation steel plate 1, bushing type is oriented to
Device 5 is accessed in a most upper conical screw hole 1-1 for fixation steel plate 1, the location-appropriate of positive location fixation steel plate 1 under X-ray monitoring,
After the extended line of bushing type guider 5 is also appropriate simultaneously, fixation steel plate 1 is fixed by interim steel plate fixing glue 4.Determine outside skin
Most upper conical screw hole 1-1 and the 3rd conical screw hole 1-1 in side spacing, it is determined that after by bushing type guider now
5 direction skins cut an osculum, and separation soft tissue is screwed into bushing type guider 5, then has an X-rayed, the 3rd conical screw hole 1-1
Bushing type guider 5 is screwed into by this step.If most upper and the 3rd bushing type guider 5 extended line is fitted in femoral head and cervix
When, you can the diameter 3.5mm guide pin 3mm under femoral head is screwed into two bushing type guiders 5 and is stopped.Extract guide pin and sleeve pipe
Formula guider 5, then expand cortex of bone on the outside of guide pin tunnel with the drill bit suitable with the corresponding conical screw hole 1-1 of facture fixation device 2,
So that the rear portion thickening of facture fixation device 2 is partially threaded into, facture fixation device 2 is screwed into along two guide pin tunnels, by the above process again
It is screwed into middle one piece of facture fixation device 2.It is screwed into the Interal fixation nail 3 of two pieces of lower ends by the above process again.Monitored again under X-ray
To determine fixing glue location-appropriate, interim steel plate fixing glue 4 is taken out, is finally sewed up the incision.It is postoperative under physician guidance, depending on patient
Situation second, which can help, turns suffering limb part heavy burden function exercise to fully recovering, and interior fixation can not take out.
Embodiment 2
The Each part of fractured near end of thighbone improvement locking steel plate inner fixing device described in the present embodiment and connection
Relation is in the same manner as in Example 1, and different technical parameters is：
1）The length of fixation steel plate 1 is 75mm, width 13.5mm, thickness 4mm；
2）Distance between each taper thread hole 1-1 in vertical direction is 14.5mm；
3）Angle α is 137 degree；
4）Taper thread hole 1-2 number is 3；
5）Rivet nuts of the tapering transition 2-1 between common taper thread and ailhead generally pyramidal structure, i.e., unitary tapered transition,
Taper is 1:10；
6）The fracture of facture fixation device 2 is remote, near-end rivet nut surface non-threaded；
7）The entire length of facture fixation device 2 is 105mm, shaft diameter 5mm, the nail tail length degree with common taper thread
For 11.5mm；
8）The length of bushing type guider 5 is 100mm.
Embodiment 3
The Each part of fractured near end of thighbone improvement locking steel plate inner fixing device described in the present embodiment and connection
Relation is in the same manner as in Example 1, and different technical parameters is：
1）The length of fixation steel plate 1 is 80mm, width 15mm, thickness 5mm；
2）Distance between each taper thread hole 1-1 in vertical direction is 15mm；
3）Angle α is 140 degree；
4）Taper thread hole 1-2 number is 4；
5）Tapering transition 2-1 length is 17.5mm；
6）The fracture of facture fixation device 2 is remote, near-end rivet nut surface non-threaded；
7）The entire length of facture fixation device 2 is 130mm, shaft diameter 6mm, the nail tail length degree with common taper thread
For 12mm；
8）The length of bushing type guider 5 is 120mm.
Embodiment 4
The Each part of fractured near end of thighbone improvement locking steel plate inner fixing device described in the present embodiment and connection
Relation is in the same manner as in Example 1, and different technical parameters is：
1）The length of fixation steel plate 1 is 72mm, width 14mm, thickness 4.5mm；
2）Angle α is 136 degree；
3）Rivet nuts of the tapering transition 2-1 between common taper thread and ailhead generally pyramidal structure, i.e., unitary tapered transition,
Taper is 1:10；
4）The entire length of facture fixation device 2 is 120mm, shaft diameter 4.5mm；
The length of bushing type guider 5 is 110mm.
Claims (10)
1. fractured near end of thighbone improves locking steel plate inner fixing device, it is characterised in that including fixation steel plate（1）, fracture fixation
Nail（2）, Interal fixation nail（3）, interim steel plate fixing glue（4）, bushing type guider（5）；
Fixation steel plate（1）Top be provided with least three be used for fix facture fixation device（2）Conical screw hole（1-1）, each cone
Shape screwed hole（1-1）Duct between be parallel to each other, and and fixation steel plate（1）Bottom into angle（α）, fixation steel plate（1）'s
Bottom is used for fixation steel plate fixing glue provided with least two（3）Taper thread hole（1-2）, fixation steel plate（1）Upper and lower side respectively set
Have at least one for fixing interim steel plate fixing glue（4）Interim fixing hole（1-3）, taper thread hole（1-2）Fixed with interim
Hole（1-3）Duct with the fixation steel plate at respective place（1）Vertically；
Facture fixation device（2）Nail tail surface carry common taper thread, common taper thread is provided with tapered to the rivet nut between ailhead
Tapering transition（2-1）, facture fixation device（2）Fracture near-end rivet nut surface non-threaded；
Interal fixation is followed closely（3）Nail tail be provided with and be used for and fixation steel plate（1）Fixed common taper thread；
Bushing type guider（5）For hollow tubular member, its one end is that can match and be screwed into conical screw hole（1-1）In cone spiral shell
Line.
2. fractured near end of thighbone according to claim 1 improves locking steel plate inner fixing device, it is characterised in that described solid
Determine steel plate（1）For the rectangular patch part to match with junction bone shape, its length is 70-80mm, width 12-15mm, thickness
For 3-5mm.
3. fractured near end of thighbone according to claim 1 or 2 improves locking steel plate inner fixing device, it is characterised in that institute
State taper thread hole（1-1）For 3, each taper thread hole（1-1）Between in the distance of vertical direction be 14-15mm, the taper thread
Hole（1-2）Individual, each taper thread hole for 2-4（1-2）Between in the distance of vertical direction be 10mm, adjacent taper thread hole（1-1）
With taper thread hole（1-2）Between in the distance of vertical direction be 12mm.
4. fractured near end of thighbone according to claim 1 or 2 improves locking steel plate inner fixing device, it is characterised in that institute
State angle（α）For 135-140 degree.
5. fractured near end of thighbone according to claim 1 improves locking steel plate inner fixing device, it is characterised in that the bone
Roll over fixing glue（2）Fracture is remote, near-end rivet nut surface non-threaded, entire length 80-130mm, shaft diameter 4-6mm, band
The nail tail length degree for having common taper thread is 11-12mm, and common taper thread specification is M8 × 1.
6. fractured near end of thighbone according to claim 1 improves locking steel plate inner fixing device, it is characterised in that the cone
Shape transition（2-1）Taper be 1:10, needed according to different for part conic transition or unitary tapered transition.
7. fractured near end of thighbone according to claim 6 improves locking steel plate inner fixing device, it is characterised in that the portion
Divide one section of pyramidal structure that tapering transition is 15-20mm for the length in the rivet nut between common taper thread and ailhead；It is described
Rivet nut of the unitary tapered transition between common taper thread and ailhead generally pyramidal structure.
8. fractured near end of thighbone according to claim 1 improves locking steel plate inner fixing device, it is characterised in that the steel
Plate fixing glue（3）Entire length be 42mm, shaft diameter 4mm, the nail tail length degree with common taper thread is 8mm, commonly
The specification of taper thread is M6 × 1, and rivet nut surface full thread, the specification of screw thread is M3.5 × 1.3.
9. fractured near end of thighbone according to claim 1 improves locking steel plate inner fixing device, it is characterised in that described to face
When Interal fixation follow closely（4）Entire length be 10mm, rivet nut surface full thread, the specification of screw thread is M2.2 × 0.8.
10. fractured near end of thighbone according to claim 1 improves locking steel plate inner fixing device, it is characterised in that described
Bushing type guider（5）Entire length be 80-120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720069536.8U CN206852655U (en) | 2017-01-20 | 2017-01-20 | Fractured near end of thighbone improves locking steel plate inner fixing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720069536.8U CN206852655U (en) | 2017-01-20 | 2017-01-20 | Fractured near end of thighbone improves locking steel plate inner fixing device |
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| CN206852655U true CN206852655U (en) | 2018-01-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112603514A (en) * | 2020-12-28 | 2021-04-06 | 上海市第六人民医院 | Plum blossom direction steel sheet for femoral neck fracture |
-
2017
- 2017-01-20 CN CN201720069536.8U patent/CN206852655U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112603514A (en) * | 2020-12-28 | 2021-04-06 | 上海市第六人民医院 | Plum blossom direction steel sheet for femoral neck fracture |
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