CN103445849A - Dynamic locking plate for treating fracture of neck of femur - Google Patents
Dynamic locking plate for treating fracture of neck of femur Download PDFInfo
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- CN103445849A CN103445849A CN2013104164913A CN201310416491A CN103445849A CN 103445849 A CN103445849 A CN 103445849A CN 2013104164913 A CN2013104164913 A CN 2013104164913A CN 201310416491 A CN201310416491 A CN 201310416491A CN 103445849 A CN103445849 A CN 103445849A
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- screw hole
- supporting plate
- anchor point
- tuberosity supporting
- tuberosity
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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
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention provides a dynamic locking plate for treating a fracture of a neck of a femur. The dynamic locking plate comprises a tuberosity supporting plate and three locking screw holes, wherein the inner surface of the tuberosity supporting plate is bent to be matched with the lower part of a greater trochanter of the femur in shape; the positions of the three locking screw holes including a first locking screw hole, a second locking screw hole and a third locking screw hole in the tuberosity supporting plate are based on a locating point A at the middle of the tuberosity supporting plate, and distributed around the locating point A; the first locking screw hole, the second locking screw hole and the third locking screw hole are distributed to form a triangle in the tuberosity supporting plate; axes of the three locking screw holes are parallel; based on a vertical line AO of the tuberosity supporting plate where the locating point A is positioned, the axial lines of the three locking screw holes are inclined upwards and form longitudinal included angles theta with the vertical line AO, which are equal to 15-35 degrees. The locating point A is located within the range that the geometric center of the tuberosity supporting plate is taken as a center, and the diameter is 4 mm. The dynamic locking plate enables the broken end of a fractured bone to be subjected to micro-movement and compression, and adapts to dynamic characteristics of bone growth when improving the internal fixation stability of the neck of the femur, so as to be more beneficial to healing of the broken end of the fractured bone.
Description
Technical field
The present invention relates to a kind for the treatment of of femoral neck fracture power lockplate, be used for the treatment of fracture of femoral neck, belong to the 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, for the patient below 65 years old, adopts open reduction to add internal fixation treatment more.Three pieces of hollow screw technique for fixing of the many employings of Fixation Treatment of Femoral Neck Fracture at present.Inserting needle from femoral bone tuberosity, to femoral head, reach fixedly fracture site effect through femoral trochanteric, femoral neck.Although this technology is fracture site fixedly, but because three pieces of hollow screws do not interrelate, there is no other supports and fixing 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, easily produce the femoral head displacement, cause 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 with lower limb and shorten, the impact walking; 4, need lying up of long period, can not take exercise by early loading.
For this reason, the locking plate for therapy of femoral neck fracture in four or five holes has appearred, as the application number locking plate for therapy of femoral neck fracture that is 201110282480.1.The support section of this lockplate has one to two piece of screw and a fracture far-end (centrifugal dirty end far away, be tuberosity part one end) skeletal fixation, make the near-end of fracture (near the near fracture end of heart, be femoral head end), far-end, locking steel plate and lock screw become one, it is stable fixing, but this fixing is that a kind of static state is fixed to fracture site, stopped the conduction of power, be unfavorable for the stimulation of fracture site power and the growth of bone, fracture site easily produces the absorption of bone and causes bone does not connect.
Summary of the invention
The objective of the invention is to design and a kind ofly be good stability but can make the treatment of femoral neck fracture power lockplate that fracture site can the fine motion pressurization, in improving neck of femur in fixing stable type and reliability, adapt to the dynamic characteristic of osteogenesis, more be conducive to the healing of fracture site.
Technical scheme of the present invention: treatment of femoral neck fracture power lockplate of the present invention comprises tuberosity supporting plate and three screw hole, tuberosity supporting plate inner surface is the curved shape with femoral greater trochanter lower shape coupling, three screw hole the first screw hole on the tuberosity supporting plate, the second screw hole, the position of the 3rd screw hole is that to take tuberosity supporting plate middle part one anchor point A be benchmark, around anchor point A, the first screw hole, the second screw hole, the 3rd screw hole, three screw hole distributions triangular in shape on the tuberosity supporting plate, the axle of three screw hole is parallel, the vertical line AO of anchor point A place place tuberosity supporting plate of take is benchmark, the axis of three screw hole is inclined upwardly, with the longitudinal angle θ of vertical line AO=15～35 °.
Described anchor point A is positioned at centered by tuberosity supporting plate geometric center, diameter is in the scope of 4mm.
Described the first screw hole is below anchor point A, with the distance R 1=7 of anchor point A～12mm; The second screw hole the line of anchor point A back upper place, the second screw hole and anchor point A with cross anchor point A to the lockplate rear horizontal angle α=5～25 °; The distance R 2=5 of the second screw hole and anchor point A～8mm; The 3rd screw hole is in anchor point A front upper place, the line of the 3rd screw hole and anchor point A and through anchor point A to the angle β between the horizontal line of lockplate the place ahead=50～75 °, the distance R 3=7 of the 3rd screw hole and anchor point A～12mm.
The length L 1=26 of described tuberosity supporting plate～40mm; Width L2=20～28mm.
The camber line combination that described tuberosity supporting plate periphery is triangle knuckle shape.
Advantage of the present invention: be an integral body after adopting lock screw of the present invention and lockplate main body to tighten, fracture of femoral neck is had to stable fixation.Simultaneously, three pieces of lock screw of employing are half dental structures, at the far-end of fracturing, do not have screw thread and skeleton to tighten fixing, and three pieces of screws are parallel, what make fracture site is fixedly a kind of dynamically fixing, is conducive to the healing of fracture, can lower nonunion rate and femur head necrosis rate; Also can reduce the displacement of neck of femur and the malunion of lower limb; Simultaneously can early functional exercise, accelerating bone healing.
1, with the comparison of three pieces of Treatment of Femoral Neck Fractures with Cannulated Screw Fixations at present commonly used, the position that three of the present invention connect capital screw hole is to design according to anatomical structure and the biomechanical principle of neck of femur, one piece of lock screw is positioned at the below stress side of neck of femur, one piece of front upper place tension side that is positioned at neck of femur, slightly on the upper side, the fixing position of lock screw is all the highest and inferior high-order bit of neck of femur sclerotin density at one piece of rear that is positioned at neck of femur; Three pieces of lock screw formed leg-of-mutton length of side in neck of femur can maximize; Lock screw and the locking of tuberosity supporting plate form an integral body, and anti-rotational force and the twisting resistance of lock screw are strong.Three pieces of hollow screw resected femur necks that adopt fixed fracture of femoral neck of the present invention to commonly use more at present are more stable, because adopt three pieces of hollow nail resected femur necks, its active force disperses, and, the position of hollow screw and direction randomness are larger, and anti-rotational force and the twisting resistance of three pieces of hollow screws are poor.
2, with the fixing lockplate of screw arranged the femur cadre compare, the present invention only has three pieces of lock screw that connect neck of femur, there is no other lock screw, three pieces of lock screw are half dental structures, it is fixing that lock screw has screw thread to tighten at the near-end of fracturing, and at the far-end of fracture and skeleton, not have screw thread and skeleton to tighten fixing, and three pieces of screws are parallel, its axially with neck of femur be axially consistent, fracture site can lock screw axially on the slippage pressurization, what make fracture site is fixedly that a kind of fine motion is fixed, be conducive to fracture growth of spur and healing.In addition, with four pieces or five pieces of lock screw lockplates comparisons, because the length of this neck of femur power lockplate is shorter less, thereby wound is less, damages also little.
3, the position of three of lockplate of the present invention pieces of lock screw and direction are according to the design of the anatomical structure of neck of femur, as long as the correct position of one piece of screw, other two pieces of screws are just squeezed into the position of appointment easily, easy and simple to handle.
The accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 is that the B-B of Fig. 1 is to structural representation.
Fig. 3 is using state master TV structure schematic diagram.
Fig. 4 is using state cross-sectional schematic of the present invention.
The specific embodiment
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 power lockplate of the present invention comprises tuberosity supporting plate and three screw hole, tuberosity supporting plate 1 inner surface is the curved shape with bone thigh greater trochanter lower shape coupling, it is characterized in that: three screw hole the first screw hole 1a on tuberosity supporting plate 1, the second screw hole 1b, the position of the 3rd screw hole 1c is that to take tuberosity supporting plate middle part one anchor point A be benchmark, and around anchor point A, the first screw hole 1a, the second screw hole 1b, the 3rd tri-of screw hole 1c screw hole distribution triangular in shape on tuberosity supporting plate 1, the axle of three screw hole is parallel, the vertical line AO of anchor point A place place tuberosity supporting plate 1 of take is benchmark, the axis of three screw hole is inclined upwardly, with the longitudinal angle θ of vertical line AO=15～35 °.
Described anchor point A is positioned at centered by tuberosity supporting plate 1 geometric center, diameter is in the scope of 4mm.
Described the first screw hole 1a is in anchor point A bottom, with the distance R 1=7 of anchor point A～12mm; The second screw hole 1b the line of anchor point A back upper place, the second screw hole 1b and anchor point A with cross anchor point A to the lockplate rear horizontal angle α=5～25 °; The distance R 2=5 of the second screw hole 1b and anchor point A～8mm; The 3rd screw hole 1c is in anchor point A front upper place, the line of the 3rd screw hole (1c) and anchor point A and through anchor point A to the angle β between the horizontal line of lockplate the place ahead=50～75 °, the distance R 3=7 of the 3rd screw hole 1c and anchor point A～12mm.
The length L 1=26 of described tuberosity supporting plate 1～40mm; Width L2=20～28mm.
The camber line combination that described tuberosity supporting plate 1 periphery is triangle knuckle shape.Three screw hole position peripheries are circular arc, between three circular arcs, are the nature easement curve.
Lockplate main body tuberosity supporting plate 1 mostly is steel plate or titanium alloy sheet.
Embodiment:
1, trumpet: L1=26～30mm; Width L2=20～23mm; R1=7～9mm; R2=5～6mm; R3=7～9mm;
2, medium size: L1=30～35mm; Width L2=23～25mm; R1=9～10mm; R2=6～7mm; R3=9～10mm;
3, large size: L1=35～40mm; Width L2=25～28mm; R1=10～12mm; R2=7～8mm; R3=10～12mm;
Fig. 3, Fig. 4 are the using state structural representations:
During use, first under fluoroscopic machine, fracture site is resetted, comprise that normotopia resets and the side position resets, by lockplate 1 be positioned over femoral greater trochanter 2 below, under fluoroscopic machine, make the first screw hole 1a on the lockplate main body point to femoral neck 4 bottoms, aim at the bottom knuckle in neck of femur cross section, angle of splay and top rake according to neck of femur, under the guide of lock screw guider, be screwed into, make the first lock screw 1a1 be positioned at neck of femur lower edge 4～5mm left and right in the neck of femur normotopia, the side position is in the central authorities of neck of femur, then, by the second lock screw 1b1, the 3rd lock screw 1c1 aims at the second screw hole 1b, on the 3rd screw hole 1c, the other two pieces of lock screw of the screw-in parallel with the first lock screw 1a1, under fluoroscopic machine, whether the position of seeing other two pieces of guide pins is correct, if correct position, be screwed into three pieces of lock screw to femoral head head 3, and tighten with lockplate 1.In figure, 5 is femur cadres.
Anchor point of the present invention is according to the neck of femur cross section, to be strictly the shape of an irregular triangle knuckle and definite, be that the neck of femur cross section has front upper knuckle, bottom knuckle, rear portion knuckle, three knuckle edges are circular arc type, the shape be connected with long arc shape between knuckle and knuckle.Select three screw holes to want corresponding three knuckles in the position of the first screw hole 1a, the second screw hole 1b, the 3rd screw hole 1c, the present invention is inclined upwardly the axis of screw hole, make three pieces of lock screw under the guide effect of the first screw hole 1a, the second screw hole 1b, the 3rd screw hole 1c, scope district, cross section, place through three knuckles of neck of femur, three screw hole resected femur cervical regions and head after preferably can reach Stabilization more, can prevent the displacement of fracture site.
Claims (5)
1. a treatment of femoral neck fracture power lockplate, comprise tuberosity supporting plate and three screw hole, tuberosity supporting plate (1) inner surface is the curved shape with femoral greater trochanter lower shape coupling, it is characterized in that: three screw hole the first screw hole (1a) on tuberosity supporting plate (1), the second screw hole (1b), the position of the 3rd screw hole (1c) is that to take tuberosity supporting plate middle part one anchor point A be benchmark, and around anchor point A, the first screw hole (1a), the second screw hole (1b), three screw hole of the 3rd screw hole (1c) are in the upper distribution triangular in shape of tuberosity supporting plate (1), the axle of three screw hole is parallel, the vertical line AO of anchor point A place place tuberosity supporting plate 1 of take is benchmark, the axis of three screw hole is inclined upwardly, with the longitudinal angle θ of vertical line AO=15～35 °.
2. treatment of femoral neck fracture power lockplate according to claim 1 is characterized in that: described anchor point A is positioned at centered by tuberosity supporting plate (1) geometric center, diameter is in the scope of 4mm.
3. treatment of femoral neck fracture power lockplate according to claim 1 and 2 is characterized in that: the first screw hole (1a) is below anchor point A, with the distance R 1=7 of anchor point A～12mm; The second screw hole (1b) in anchor point A back upper place, the line of the second screw hole (1b) and anchor point A with cross anchor point A to the lockplate rear horizontal angle α=5～25 °, the distance R 2=5 of the second screw hole (1b) and anchor point A～8mm; The 3rd screw hole (1c) is in anchor point A front upper place, the line of the 3rd screw hole (1c) and anchor point A and through anchor point A to the angle β between the horizontal line of lockplate the place ahead=50～75 °, the distance R 3=7 of the 3rd screw hole (1c) and anchor point A～12mm.
4. treatment of femoral neck fracture power lockplate according to claim 1 and 2, is characterized in that: the length L 1=26 of tuberosity supporting plate (1)～40mm; Width L2=20～28mm.
5. treatment of femoral neck fracture power lockplate according to claim 1 and 2, is characterized in that: the camber line combination that tuberosity supporting plate (1) periphery is the triangle knuckle.
Priority Applications (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 |
Applications Claiming Priority (1)
| 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 |
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| Publication Number | Publication Date |
|---|---|
| CN103445849A true CN103445849A (en) | 2013-12-18 |
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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 |
|---|---|---|---|
| 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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| CN (2) | CN103445849A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546100A (en) * | 2013-09-13 | 2015-04-29 | 勘武生 | Dynamic compression locking plate for treatment of femoral neck fracture |
| 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 |
| 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 (4)
| 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 |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188086C (en) * | 2002-05-23 | 2005-02-09 | 霍新明 | Internal fixation steel plate for department of orthopedics |
| US7179260B2 (en) * | 2003-09-29 | 2007-02-20 | Smith & Nephew, Inc. | 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 |
-
2013
- 2013-09-13 CN CN2013104164913A patent/CN103445849A/en active Pending
-
2014
- 2014-09-10 CN CN201410458654.9A patent/CN104546100B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546100A (en) * | 2013-09-13 | 2015-04-29 | 勘武生 | Dynamic compression locking plate for treatment of femoral neck fracture |
| 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 |
| 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 |
|---|---|
| CN104546100A (en) | 2015-04-29 |
| CN104546100B (en) | 2017-02-01 |
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Application publication date: 20131218 |