CN104546100A - Dynamic compression locking plate for treatment of femoral neck fracture - Google Patents
Dynamic compression locking plate for treatment of femoral neck fracture Download PDFInfo
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- CN104546100A CN104546100A CN201410458654.9A CN201410458654A CN104546100A CN 104546100 A CN104546100 A CN 104546100A CN 201410458654 A CN201410458654 A CN 201410458654A CN 104546100 A CN104546100 A CN 104546100A
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- steel plate
- screw hole
- pressurizing
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- 208000020089 femoral neck fracture Diseases 0.000 title claims abstract description 18
- 230000006835 compression Effects 0.000 title abstract description 22
- 238000007906 compression Methods 0.000 title abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 210000000527 greater trochanter Anatomy 0.000 claims abstract description 7
- 210000001694 thigh bone Anatomy 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 43
- 206010017076 Fracture Diseases 0.000 description 42
- 210000000689 upper leg Anatomy 0.000 description 26
- 210000003739 neck Anatomy 0.000 description 25
- 210000002436 femur neck Anatomy 0.000 description 13
- 210000000988 bone and bone Anatomy 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000035876 healing Effects 0.000 description 5
- 210000003484 anatomy Anatomy 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000007875 Femur Head Necrosis Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004520 agglutination Effects 0.000 description 1
- 230000037182 bone density Effects 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000011164 ossification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a dynamic compression locking plate for treatment of femoral neck fracture. The dynamic compression locking plate comprises a locking steel plate, three screw holes formed in the locking steel plate, and screws, wherein the inner surface of the locking steel plate is in a bent shape matched with the shape of the lower part of the greater trochanter of the thigh bone; the three screw holes in the locking steel plate are compression locking screw holes; the three compression locking screw holes take a location point A in the middle of the locking steel plate as a reference and are distributed around the location point in a triangular manner; the axes of the three compression locking screw holes are parallel, the axial lines of the three compression locking screw holes are inclined upwards by taking a vertical line AO, where the location point A is located, of the locking steel plate as a reference, and the longitudinal included angle theta between the axial line of each compression locking screw hole and the vertical line AO is 5-35 degrees; each compression locking screw hole comprises a screw hole in the upper layer and a tapered hole or semispherical unthreaded hole in the lower layer; the corresponding screws are compression screws, each of which comprises a thread section in the front, a polished rod section in the middle and a tapered or semispherical unthreaded screw head in the head; the end surface of each unthreaded screw head is a plane and is provided with a screwdriver compression notch in the center; each screw also comprises a locking jackscrew corresponding to a threaded hole in the upper layer of each compression screw hole.
Description
Technical field
The present invention relates to a kind for the treatment of of femoral neck fracture dynamic pressurization lockplate, be used for the treatment of fracture of femoral neck, belong to Medical orthopedic apparatus.
Background technology
The Therapeutic Method of fracture of femoral neck is divided into expectant treatment and operative treatment, for labile fracture of femoral neck, generally all adopts operative treatment, and for the patient of less than 65 years old, the operative reduction that adopts added internal fixation treatment more.The many employings of current Fixation Treatment of Femoral Neck Fracture three pieces of hollow screw technique for fixing.Inserting needle from femoral bone tuberosity, through femoral trochanteric, femoral neck to femoral head, reaches fixing fracture site effect.The fixing fracture site although this technology can be pressurizeed, but because three pieces of hollow screws do not interrelate, do not have other to support and fix yet, exist significantly not enough: 1, stable type is poor, anti-rotational force and the twisting resistance of three pieces of hollow screws are poor, easy generation femoral head displacement, causes neck of femur disunion or bone malformation healing; 2, generation femur head necrosis ratio at a specified future date is higher; 3, in the agglutination of neck of femur, easily produce the shortening of neck of femur, cause locking pin to exit and shorten with lower limb, impact walking; 4, need lying up of long period, can not take exercise by early loading.
For this reason, there is the treatment of femoral neck fracture locking steel plate in four or five holes, if application number is the treatment of femoral neck fracture locking steel plate of 201110282480.1.The support section of this locking steel plate has one to two piece of screw and fracture far-end (centrifugal dirty one end far away, i.e. tuberosity part one end) skeletal fixation, make the near-end of fracture (near the fracture end that heart is near, i.e. femoral head end), far-end, locking steel plate become to be integrated with lock screw, it is stable fixing, but this fixing is not pressurizeed fixing to fracture site, and fracture site is a kind of static fixing, block the conduction of power, be unfavorable for the stimulation of fracture site power and the growth of callus, fracture site easily produces the absorption of bone and causes bone does not connect.
Summary of the invention
The object of the invention is to design a kind for the treatment of of femoral neck fracture dynamic pressurization lockplate, the fracture of femoral neck broken ends of fractured bone can be pressurizeed, again can axial lock support, again that a kind of power is fixed simultaneously, while the stable type improving neck of femur internal fixtion and reliability, the dynamic pressurization feature of osteogenesis can be adapted to again, be more conducive to the healing of fracture site.
Technical scheme of the present invention: treatment of femoral neck fracture dynamic pressurization lockplate of the present invention comprises locking steel plate, three screw holes on locking steel plate, screw, locking steel plate inner surface is in the curved shape mated with femoral greater trochanter lower shape, three screw holes on its locking steel plate are locking and pressurizing screw hole, first locking and pressurizing screw hole, second locking and pressurizing screw hole, the position of the 3rd pressurization screw hole is for benchmark with an anchor point A in the middle part of locking steel plate, and around anchor point A, first locking and pressurizing screw hole, second locking and pressurizing screw hole, 3rd pressurization screw hole distribution triangular in shape on locking steel plate, the axle of three locking and pressurizing screw holes is parallel, with the vertical line AO of anchor point A place place locking steel plate for benchmark, the axis inclined upwards of three locking and pressurizing screw holes, with longitudinal angle θ=5 ~ 35 ° of vertical line AO, three locking and pressurizing screw holes comprise two-layer up and down, and upper strata is screw, and lower floor is taper or hemispherical unthreaded hole, corresponding screw is forcing screw, and comprise anterior screw section, the polished rod section at middle part and the taper of head or hemispherical without screw thread ailhead, be plane without drive screw end surface, there are screwdriver pressurization recess in central authorities, also having the locking jackscrew corresponding with the screw on upper strata, forcing screw hole, is the screw thread mated with the screw on screw hole upper strata around locking jackscrew, and there is screwdriver locking recess locking jackscrew upper end, and lower end is plane.
Described anchor point A is positioned at centered by locking steel plate geometric center, diameter is in the scope of 2mm.
The first described locking and pressurizing screw hole in the below of anchor point A, with the distance R1=7 ~ 12mm of anchor point A; With the line of anchor point A and the first locking and pressurizing screw hole for lockplate datum line B-B, second locking and pressurizing screw hole in anchor point A back upper place, angle α=60 ~ 90 ° of the second locking and pressurizing screw hole and lockplate datum line B-B, the distance R2=4 ~ 8mm of the second locking and pressurizing screw hole and anchor point A; 3rd pressurizes screw hole in anchor point A front upper place, angle β=10 ~ 40 ° of the 3rd pressurization screw hole and lockplate datum line B-B, the distance R3=7 ~ 12mm of the 3rd screw hole and anchor point A.
Length L1=32 ~ the 40mm of described locking steel plate; Width L2=22 ~ 28mm.
Three described screw hole centers and locking steel plate face antermarginal distance L3=7 ~ 12mm, and the outer periphery of locking steel plate three screw holes is arc-shaped, are interior camber line nature easement curve between the arc-shaped of three screw holes.
Depth H 2=2.0 ~ the 4.5mm of the upper strata screw of three described locking and pressurizing screw holes, lower floor is the depth H 1=3 ~ 4.5mm of taper or hemispherical unthreaded hole; Thickness h=2.5 ~ the 3.5mm of corresponding locking jackscrew.
Length S1=16 ~ the 20mm of the screw section of three described screw front portions, the length S2=50 ~ 100mm of the polished rod section at middle part, taper or hemispherical are without the height S3=3 ~ 4.5mm of screw thread ailhead.
Advantage of the present invention: one, the present invention is according to the anatomical structure of neck of femur and biomechanical principle design by the position that three pieces of locking and pressurizing screw hole connect capital forcing screws,, there is good constant intensity three screw fixed positions after preferably to fracture of femoral neck; Two, the present invention adopts cannulated compression screw, locking steel plate main body and locking nail silk, becomes an entirety after three tightens, and has stable pressurization to support fixation to fracture of femoral neck; Three, the three pieces of cannulated compression screw adopted are half tooth screws, do not have screw thread and skeleton to tighten at the far-end of fracture fixing, three pieces of screws are parallel, and what make fracture site is fixedly that a kind of power is fixed, be conducive to the compression healing of fracture site, nonunion rate and femur head necrosis rate can be lowered; Also the displacement of neck of femur and the malunion of lower limb can be reduced; Simultaneously can early functional exercise, accelerating bone healing.
1, with the comparing of three pieces of at present conventional Treatment of Femoral Neck Fractures with Cannulated Screw Fixations, it is according to the anatomical structure of neck of femur and biomechanical principle design that the present invention three connects the position of capital locking and pressurizing screw hole, one piece of forcing screw is positioned at the stress side, below of neck of femur, one piece of front upper place tension side being positioned at neck of femur, one piece of rear being positioned at neck of femur is slightly on the upper side, forcing screw the position fixed be all the highest and secondary high-order bit of neck of femur bone density; The leg-of-mutton length of side that three pieces of forcing screws are formed in neck of femur can be larger; Forcing screw and locking steel plate, by locking nail silk locking formation entirety, make the anti-rotational force of locking and pressurizing screw and twisting resistance greatly strengthen.Adopt three pieces of hollow screw resected femur necks that fixed fracture of femoral neck of the present invention is more conventional more stable, adopt three pieces of hollow nail resected femur necks, the active force of screw is dispersion, position and the direction randomness of hollow screw are larger, anti-rotational force and the twisting resistance of three pieces of hollow screws are poor, easy generation fracture fracture site is unstable and be shifted, and affects union of fracture.
2, compared with fixing with there being screw at femoral shaft position lockplate, the proximal femoral head of the present invention to fracture is fixed with three pieces of cannulated compression screw, three pieces of cannulated compression screw are half dental structures, cannulated compression screw has screwed tight to fix at the near-end of fracture, and fracture far-end and skeleton do not have screw thread to fix, and be through locking steel plate complete pressurization after with locking jackscrew tighten after complete with locking steel plate together with lock fix.Three pieces of screws are parallel, its axially with the axis of neck of femur close to consistent, fracture site can compress in the axially slippage of screw, and what make fracture site is fixedly that a kind of power is fixed, and does not have stress shielding, is conducive to fracture growth of spur and healing.In addition, compare with four pieces or five pieces of lock screw locking steel plates, the length due to this neck of femur power locking steel plate is shorter less, and thus wound can be less, damages also little.
3, locking and pressurizing steel plate is placed in greater trochanter external lower margin by the present invention, by being placed in the locking steel plate guider on locking and pressurizing hole, three pieces of Kirschner wires are squeezed into the position designed in advance in neck of femur, measure the length of required pressurization hold-down screw, three pieces of pressurization hold-down screws are screwed in femoral head neck by locking and pressurizing steel plate nail, and fracture site is pressurizeed, then three pieces of locking jackscrews are screwed in locking and pressurizing hole, make forcing screw and locking and pressurizing steel plate locking formation entirety, reach locking and pressurizing supporting role.
4, the position of three pieces of lock screw of locking steel plate of the present invention and direction are designed according to the anatomical structure of neck of femur, as long as the position of one piece of screw is correct, other two pieces of screws just squeeze into the position of specifying easily, easy and simple to handle.
5, the screw Duan Yuwu screw thread ailhead of three pieces of screw front portions of the present invention coordinates, and has pressurization fixation being screwed in process to the fracture of femoral neck broken ends of fractured bone.Three pieces of locking jackscrew three pieces of screw locks that can fix pressurizeing fix on locking steel plate, locking steel plate, screw, fracture site is made to become as a whole, complete locking and pressurizing fixation, and this fixing and fracture far-end does not have screw thread to fix, thus stress shielding is not had, when bearing a heavy burden, fracture site can dynamic pressurization, promotes union of fracture.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 is vertical structure schematic diagram of the present invention.
The structure enlarged diagram of Fig. 3 to be three screw hole be taper.
Fig. 4 is three screw hole is hemispheric structure enlarged diagram.
Fig. 5 is jackscrew structural representation.
Fig. 6 is the plan structure schematic diagram of Fig. 5.
Fig. 7 be Fig. 5 look up structural representation.
The lock screw structural representation of Fig. 8 to be ailhead be taper.
Fig. 9 is ailhead is hemispheric lock screw structural representation.
Figure 10 is using state cross-sectional schematic of the present invention.
Figure 11 is the main TV structure schematic diagram of using state.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described:
As Fig. 1, Fig. 2: a kind for the treatment of of femoral neck fracture dynamic pressurization lockplate of the present invention comprises locking steel plate 1, three screw holes on locking steel plate, screw 2 and jackscrew 3, locking steel plate 1 inner surface is in the curved shape mated with femoral greater trochanter lower shape, three screw holes on locking steel plate 1 are locking and pressurizing screw hole: the first locking and pressurizing screw hole 1a, second locking and pressurizing screw hole 1b, the position of the 3rd pressurization screw hole 1c is for benchmark with an anchor point A in the middle part of locking steel plate, and around anchor point A, first locking and pressurizing screw hole 1a, second locking and pressurizing screw hole 1b, 3rd pressurization screw hole 1c tri-locking and pressurizing screw holes distribution triangular in shape on locking steel plate 1, the axle of three locking and pressurizing screw holes is parallel, with the vertical line AO of anchor point A place place locking steel plate 1 for benchmark, the axis inclined upwards of three locking and pressurizing screw holes, with longitudinal angle θ=5 ~ 35 ° of vertical line AO, three locking and pressurizing screw holes comprise two-layer up and down, and upper strata is screw, and lower floor is taper or hemispherical unthreaded hole, corresponding screw 2 is forcing screw, and comprising anterior screw section 2a, the polished rod section 2b at middle part and the taper of head or hemispherical without screw thread ailhead 2c, is plane without screw thread ailhead 2c end face, and there are screwdriver pressurization recess 2d in central authorities, also having the locking jackscrew 3 corresponding with the screw on upper strata, forcing screw hole, is the screw thread 3a mated with the screw on screw hole upper strata around locking jackscrew 3, and there is screwdriver locking recess 3b locking jackscrew 3 upper end, and lower end is plane 3c.
Described anchor point A is positioned at centered by locking steel plate 1 geometric center, diameter is in the scope of 2mm.
First locking and pressurizing screw hole 1a in the below of anchor point A, with the distance R1=7 ~ 12mm of anchor point A; With the line of anchor point A and the first locking and pressurizing screw hole 1a for lockplate datum line B-B, second locking and pressurizing screw hole 1b in anchor point A back upper place, the line of the second locking and pressurizing screw hole 1b and anchor point A and angle α=60 ~ 90 ° of lockplate datum line B-B, the distance R2=4 ~ 8mm of the second locking and pressurizing screw hole 1b and anchor point A; 3rd pressurizes screw hole 1c in anchor point A front upper place, the 3rd pressurization line of screw hole 1c and anchor point A and angle β=10 ~ 40 ° of lockplate datum line B-B, the distance R3=7 ~ 12mm of the 3rd screw hole 1c and anchor point A.
Length L1=32 ~ the 40mm of locking steel plate 1; Width L2=22 ~ 28mm.
Three screw hole centers and locking steel plate 1 face antermarginal distance L3=7 ~ 12mm, and the outer periphery of locking steel plate 1 three screw holes is arc-shaped, are interior camber line nature easement curve between the arc-shaped of three screw holes.Locking steel plate body lock steel plate 1, cannulated compression screw 2 and locking nail silk 3 mostly are steel plate or titanium alloy sheet.
The forcing screw structural representation of Fig. 8 to be ailhead be taper, Fig. 9 are ailheads is hemispheric forcing screw structural representation:
Length S1=16 ~ the 20mm of the screw section 2a of three screw 2 front portions, the length S2=50 ~ 100mm of the polished rod section 2b at middle part.Taper or hemispherical are without the height S3=3 ~ 4.5mm of screw thread ailhead 2c.Be plane without screw thread ailhead 2c end face, central authorities have screwdriver to pressurize recess 2d.
The structure enlarged diagram of Fig. 3 to be three screw hole be taper, Fig. 4 are three screw hole is hemispheric structure enlarged diagram:
For the first locking and pressurizing screw hole, the depth H 2=2.0 ~ 4.5mm of the upper strata screw 1a2 of screw hole, lower floor is the depth H 1=3 ~ 4.5mm of taper or hemispherical unthreaded hole 1a1.
Fig. 5, Fig. 6, Fig. 7 are jackscrew structural representations: be the screw thread 3a mated with the screw on screw hole upper strata around jackscrew 3, there is Torx screwdriver locking recess 3b upper end, and lower end is plane 3c, the thickness h=2.5 ~ 3.5mm of jackscrew 3.
Embodiment: locking steel plate divides large trumpet.
1, large size: L1=35 ~ 40mm; Width L2=24 ~ 28mm; R1=9 ~ 12mm; R2=5 ~ 8mm; R3=9 ~ 12mm;
2, small size: L1=32 ~ 35mm; Width L2=22 ~ 24mm; R1=7 ~ 9mm; R2=4 ~ 5mm; R3=7 ~ 9mm;
The taper of the screw segment length L1 of screw front portion, the polished rod segment length L2 at middle part, screw or hemispherical are that the depth H 1 of taper or hemispherical unthreaded hole 1a1 and the size etc. of jackscrew all match with locking steel plate model without the height of screw thread ailhead 2c, the depth H 2 of the upper strata screw 1a2 of screw hole, lower floor.
Figure 10, Figure 11 is using state structural representation: during use, first under fluoroscopic machine, fracture site is resetted, comprise normotopia to reset and the reset of position, side, three locking and pressurizing screw holes of locking steel plate install guider, locking steel plate is positioned over femoral greater trochanter 7 outer below, mutually docile with the lower outside cortical bone of greater trochanter 7, under fluoroscopic machine, according to the guider be arranged on locking steel plate on the 3rd pressurization screw hole 1c, according to angle of splay and the top rake of neck of femur, Kirschner wire is pierced with electric drill, point to the front upper knuckle portion of neck of femur 5, make it in neck of femur, apart from neck of femur the top and each about 5mm in foremost, Kirschner wire is most advanced and sophisticated apart from 3-5mm under articular surface, position, positive side perspective position is accurate, again under the guide of two other guider, pierce other two pieces of Kirschner wires to the rear knuckle of neck of femur and lower knuckle position, three pieces of Kirschner wires are parallel, measure the length determining forcing screw, take off the guider on locking steel plate, three locking and pressurizing screw hole 1c on locking steel plate respectively, 1b, 1a is screwed into three pieces of cannulated compression screw, femoral neck bone fracture is compressed, again at three locking and pressurizing screw hole 1c, 1b, the upper strata of 1a is screwed into three pieces of locking nail silks, make cannulated compression screw and locking steel plate locking, form an entirety, take off Kirschner wire, complete fixing operation.In figure: 4 is femur cadres, and 6 is femorals head.
Anchor point of the present invention is that the strict shape according to the axial total irregular triangle knuckle of sectional view one of neck of femur is determined, namely neck of femur has the plane graph in cross section and is one and has front upper knuckle, the shape of bottom knuckle and rear portion knuckle, three knuckle edges are circular arc type, with the shape that long arc shape is connected between knuckle with knuckle.Select three forcing screw holes i.e. the first locking and pressurizing screw hole 1a, second locking and pressurizing screw hole 1b, the position of the 3rd pressurization screw hole 1c will corresponding to three knuckles, the present invention is by the axis inclined upwards in forcing screw hole on locking steel plate 1, make three pieces of forcing screws at the first locking and pressurizing screw hole 1a, second locking and pressurizing screw hole 1b, under the guide effect of the 3rd pressurization screw hole 1c, through the scope district, cross section, place of neck of femur three knuckles, three locking and pressurizing screw hole resected femur cervical regions after preferably and head can reach Stabilization more, the displacement of fracture site can be prevented.
, without screw thread ailhead 2c, there is pressurization fixation at the screw section 2a of three pieces of screw front portions of the present invention and rear portion to the fracture of femoral neck broken ends of fractured bone being screwed in process.Three pieces of locking jackscrew three pieces of cannulated compression screw that can fix pressurizeing are locked on locking steel plate, locking steel plate, screw, fracture site is made to become as a whole, complete locking and pressurizing fixation, and this fixing and fracture far-end does not have screw thread to fix, thus stress shielding is not had, when bearing a heavy burden, fracture site can dynamic pressurization, promotes union of fracture.
Claims (7)
1. a treatment of femoral neck fracture dynamic pressurization lockplate, comprise locking steel plate (1), three screw holes on locking steel plate, screw (2), locking steel plate (1) inner surface is in the curved shape mated with femoral greater trochanter lower shape, it is characterized in that: three screw holes on locking steel plate (1) are locking and pressurizing screw hole, first locking and pressurizing screw hole (1a), second locking and pressurizing screw hole (1b), the position of the 3rd pressurization screw hole (1c) is for benchmark with an anchor point A in the middle part of locking steel plate, and around anchor point A, first locking and pressurizing screw hole (1a), second locking and pressurizing screw hole (1b), 3rd pressurization screw hole (1c) is in the upper distribution triangular in shape of locking steel plate (1), the axle of three locking and pressurizing screw holes is parallel, with the vertical line AO at anchor point A place place locking steel plate (1) for benchmark, the axis inclined upwards of three locking and pressurizing screw holes, with longitudinal angle θ=5 ~ 35 ° of vertical line AO, three locking and pressurizing screw holes comprise two-layer up and down, and upper strata is screw, and lower floor is taper or hemispherical unthreaded hole, corresponding screw (2) is forcing screw, comprise anterior screw section (2a), the polished rod section (2b) at middle part and the taper of head or hemispherical without screw thread ailhead (2c), be plane without screw thread ailhead (2c) end face, central authorities have screwdriver to pressurize recess (2d), also have the locking jackscrew (3) corresponding with the screw on upper strata, forcing screw hole, locking jackscrew (3) is around the screw thread (3a) mated with the screw on screw hole upper strata, there is screwdriver locking recess (3b) locking jackscrew (3) upper end, and lower end is plane (3c).
2. treatment of femoral neck fracture dynamic pressurization lockplate according to claim 1, is characterized in that: described anchor point A is positioned at centered by locking steel plate (1) geometric center, diameter is in the scope of 2mm.
3. treatment of femoral neck fracture dynamic pressurization lockplate according to claim 1 and 2, is characterized in that: the first locking and pressurizing screw hole (1a) in the below of anchor point A, with the distance R1=7 ~ 12mm of anchor point A; Be lockplate datum line with the line B-B of anchor point A and the first locking and pressurizing screw hole (1a), second locking and pressurizing screw hole (1b) in anchor point A back upper place, the second locking and pressurizing screw hole (1b) and the line of anchor point A and angle α=60 ~ 90 ° of lockplate datum line B-B, the distance R2=4 ~ 8mm of the second locking and pressurizing screw hole (1b) and anchor point A; 3rd pressurization screw hole (1c) is in anchor point A front upper place, 3rd pressurization screw hole (1c) and the line of anchor point A and angle β=10 ~ 40 ° of lockplate datum line B-B, the distance R3=7 ~ 12mm of the 3rd screw hole (1c) and anchor point A.
4. treatment of femoral neck fracture dynamic pressurization lockplate according to claim 1 and 2, is characterized in that: the length L1=32 ~ 40mm of locking steel plate (1); Width L2=22 ~ 28mm.
5. treatment of femoral neck fracture dynamic pressurization lockplate according to claim 1 and 2, it is characterized in that: three screw hole centers and locking steel plate (1) face antermarginal distance L3=7 ~ 12mm, the outer periphery of locking steel plate (1) three screw hole is arc-shaped, is interior camber line nature easement curve between the arc-shaped of three screw holes.
6. treatment of femoral neck fracture dynamic pressurization lockplate according to claim 1 and 2, is characterized in that: the depth H 2=2.0 ~ 4.5mm of the upper strata screw of three locking and pressurizing screw holes, lower floor is the depth H 1=3 ~ 4.5mm of taper or hemispherical unthreaded hole; Thickness h=2.5 ~ the 3.5mm of corresponding locking jackscrew (3).
7. treatment of femoral neck fracture dynamic pressurization lockplate according to claim 1 and 2, it is characterized in that: the length S1=16 ~ 20mm of the screw section (2a) of three screw (2) front portions, length S2=50 ~ the 100mm of polished rod section (2b) at middle part, taper or hemispherical are without the height S3=3 ~ 4.5mm of screw thread ailhead (2c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410458654.9A CN104546100B (en) | 2013-09-13 | 2014-09-10 | Dynamic compression locking plate for treatment of femoral neck fracture |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104164913A CN103445849A (en) | 2013-09-13 | 2013-09-13 | Dynamic locking plate for treating fracture of neck of femur |
| CN201410458654.9A CN104546100B (en) | 2013-09-13 | 2014-09-10 | Dynamic compression locking plate for treatment of femoral neck fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104546100A true CN104546100A (en) | 2015-04-29 |
| CN104546100B CN104546100B (en) | 2017-02-01 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104164913A Pending CN103445849A (en) | 2013-09-13 | 2013-09-13 | Dynamic locking plate for treating fracture of neck of femur |
| CN201410458654.9A Active CN104546100B (en) | 2013-09-13 | 2014-09-10 | Dynamic compression locking plate for treatment of femoral neck fracture |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013104164913A Pending CN103445849A (en) | 2013-09-13 | 2013-09-13 | Dynamic locking plate for treating fracture of neck of femur |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923899A (en) * | 2015-12-29 | 2017-07-07 | 肖珍云 | A kind of orthopaedics lock screw |
| CN107411809A (en) * | 2017-05-18 | 2017-12-01 | 长春圣博玛生物材料有限公司 | A kind of double spike devices of cross moment support |
| CN107789044A (en) * | 2016-09-05 | 2018-03-13 | 财团法人金属工业研究发展中心 | Bone is broken fixing device |
| CN107970063A (en) * | 2016-10-24 | 2018-05-01 | 李海洋 | A kind of multiple tooth bone plate |
| CN113893019A (en) * | 2021-10-20 | 2022-01-07 | 海南苏生生物科技有限公司 | Dynamic pressurizing device for bone wound repair |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103445849A (en) * | 2013-09-13 | 2013-12-18 | 勘武生 | Dynamic locking plate for treating fracture of neck of femur |
| CN105943147A (en) * | 2016-05-25 | 2016-09-21 | 广州中医药大学第附属医院 | A femoral neck fracture locking and fixing device and method |
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| CN1380043A (en) * | 2002-05-23 | 2002-11-20 | 霍新明 | Internal fixation steel plate for department of orthopedics |
| US20070162020A1 (en) * | 2003-09-29 | 2007-07-12 | Darin Gerlach | Bone plates and bone plate assemblies |
| CN2792426Y (en) * | 2005-04-21 | 2006-07-05 | 张荣魁 | Concentric hook-shaped fracture-setting plate |
| CN201022739Y (en) * | 2006-10-28 | 2008-02-20 | 创生医疗器械(江苏)有限公司 | Fracture setting board |
| CN201516082U (en) * | 2009-11-16 | 2010-06-30 | 陈唯宁 | Synchronous pressurizing lock plate |
| US20120191138A1 (en) * | 2011-01-21 | 2012-07-26 | Kiester P Douglas | Use of flexible bushings to promote healing and stable fracture compression in orthopedic trauma plates |
| CN103445849A (en) * | 2013-09-13 | 2013-12-18 | 勘武生 | Dynamic locking plate for treating fracture of neck of femur |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923899A (en) * | 2015-12-29 | 2017-07-07 | 肖珍云 | A kind of orthopaedics lock screw |
| CN107789044A (en) * | 2016-09-05 | 2018-03-13 | 财团法人金属工业研究发展中心 | Bone is broken fixing device |
| CN107970063A (en) * | 2016-10-24 | 2018-05-01 | 李海洋 | A kind of multiple tooth bone plate |
| CN107411809A (en) * | 2017-05-18 | 2017-12-01 | 长春圣博玛生物材料有限公司 | A kind of double spike devices of cross moment support |
| CN107411809B (en) * | 2017-05-18 | 2023-08-18 | 长春圣博玛生物材料有限公司 | Cross moment supports two nail devices |
| CN113893019A (en) * | 2021-10-20 | 2022-01-07 | 海南苏生生物科技有限公司 | Dynamic pressurizing device for bone wound repair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104546100B (en) | 2017-02-01 |
| CN103445849A (en) | 2013-12-18 |
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Effective date of registration: 20210723 Address after: 570100 room a1-926, floor 5, building a, venture egg center, Haikou national high tech Zone, No. 266, Nanhai Avenue, Haikou City, Hainan Province Patentee after: Hainan Jinyin Orthopedic Instrument Co.,Ltd. Address before: 430056 Department of orthopedics, Wuhan puai hospital, Hanzheng Street, Qiaokou District, Wuhan City, Hubei Province Patentee before: Wusheng Patentee before: Li Shaogang |
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Address after: No. 288 Nanhai Avenue, National High tech Industrial Development Zone, Haikou City, Hainan Province, 570100 Patentee after: Hainan Jinyin Orthopedic Equipment Innovation Research Co.,Ltd. Address before: 570100 room a1-926, floor 5, building a, venture egg center, Haikou national high tech Zone, No. 266, Nanhai Avenue, Haikou City, Hainan Province Patentee before: Hainan Jinyin Orthopedic Instrument Co.,Ltd. |