CN2271879Y - Half round locked intramedullary nail - Google Patents
Half round locked intramedullary nail Download PDFInfo
- Publication number
- CN2271879Y CN2271879Y CN 96235263 CN96235263U CN2271879Y CN 2271879 Y CN2271879 Y CN 2271879Y CN 96235263 CN96235263 CN 96235263 CN 96235263 U CN96235263 U CN 96235263U CN 2271879 Y CN2271879 Y CN 2271879Y
- Authority
- CN
- China
- Prior art keywords
- nail
- groove
- boss
- shape
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 208000001581 lymphogranuloma venereum Diseases 0.000 claims description 6
- 210000000544 articulatio talocruralis Anatomy 0.000 abstract description 5
- 239000000178 monomer Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 241000587161 Gomphocarpus Species 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 11
- 210000002303 tibia Anatomy 0.000 description 10
- 238000005452 bending Methods 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 5
- 241000628997 Flos Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
- 208000003241 Fat Embolism Diseases 0.000 description 1
- 206010051326 Ligament calcification Diseases 0.000 description 1
- 206010031252 Osteomyelitis Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000000426 patellar ligament Anatomy 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000002972 tibial nerve Anatomy 0.000 description 1
Images
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to a half round locked intramedullary nail which is composed of an inner side nail monomer and an outer side nail monomer. A nail head is in a 'fish-mouth' shape, and a nail tail is provided with a bolt hole. A cross section of the inner side nail is in a star shape, the center is provided with a groove, and both sides of the groove are respectively provided with a boss. A cross section of the outer side nail is in a star shape, the center is provided with a groove, and both sides of the groove are respectively provided with a boss. The outer side nail is mutually jogged with the groove and the boss of the inner side nail, and an entirety is formed. The utility model has the advantages of simple structure, reasonable design, easy manufacture, easy operation and use, reasonable structure of the internal fixation, firmness, reliability, and good biomechanics performance. The half round locked intramedullary nail is especially suitable for use as an internal fixation instrument of fracture which is within 5 cm from the ankle joint.
Description
This utility model relates to a kind of orthopedics department medical apparatus and instruments, and refering in particular to is a kind of semicircle interlocking intramedullary nail that knochenbruch pulp cavity fixation of bone fragments helps its healing that is placed through.
The hypomere fracture is modal clinically long bone fracture in the tibia; Especially along with communication and mechanization produce flourish, the corresponding increase of traffic and industrial accident, its fracture degree is more and more serious, it is thorny especially that clinical treatment is also felt.General system Gypsum Fibrosum, plintlet, calcaneal traction, function support, external fixer, steel plate, Flos Mume nail, square nail, self-locking nail etc., effect is all not ideal enough, indication limits to, complication is many.Can cause osteoporosis under the plate as steel plate, cause refracture; External fixer easily causes pin site infection, and angulation deformity is carried inconvenience; Though Flos Mume nail, square nail, self-locking nail etc. adopt the mode at the medullary cavity internal fixation, operation wound is little, its application more and more comes into one's own, but the Flos Mume nail is poor because of biomechanical property, and complication is many, replaces for other intramedullary pin gradually, square tack operation indication limitation is big, still need external plaster fixation, angulation deformity, move back the nail incidence rate many; And complication such as posterior tibial nerve paralysis, patellar ligament calcification can take place in self-locking nail (comprising two kinds of RTNT and UTN) complicated operation; The RTN self-locking nail can increase the weight of the infringement to blood fortune in the marrow, osteomyelitis, fat embolism incidence rate height; UTN self-locking nail broken nail, disconnected horizontal bolt rate height; Torsional property is poor, therefore, in the tibia, hypomere fracture, particularly to distance ankle joint 5CM with interior fracture, no fixation.
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of and advance nail easily, biomechanical property is good, meets the tibia anatomical features, can well control hypomere fracture all directions displacement in the tibia, stress shielding is little, the half garden shape interlocking intramedullary nail that indication is wide.
This utility model is to adopt following proposal to realize: it is followed closely two monomers by an inboard nail and an outside and forms, and ailhead is " lymphogranuloma inguinale shape ", and the nail tail is provided with a keyhole, and the inboard is followed closely the transverse section and is
Shape, promptly the center is provided with a groove, and the groove both sides are equipped with boss; Outside nail is horizontal, and section is
Shape, promptly the center is provided with a boss, and the boss both sides are equipped with groove, and outside nail is chimeric mutually with groove, the boss of inboard nail, constitutes an integral body, and has good bending resistance, resistance to compression, antitorque biomechanical property.
This utility model is owing to adopt the mutual chimeric structure of groove and boss, thereby has good bending resistance, antitorque, compressive property, adopts the structure of half garden shape outer surface and head " lymphogranuloma inguinale shape ", make it advance nail easily, overcome existing various internal fixation structures, easily broken nail is disconnected horizontal etc.Bolt, move back nail, infection rate height, angulation deformity, etc. defective, simple to operate, need not the supplementary instrument guiding and expand pulp cavity, do not need external fixation, functional rehabilitation is fast, especially distance ankle joint 5CM is fractured with interior various tibia hypomere, fixed effect is good, is a kind of good apparatus that is applicable to hypomere fracture internal fixation in the various tibia.
Concrete structure of the present utility model describes in detail below in conjunction with accompanying drawing:
Accompanying drawing 1 is this utility model outside nail front view;
Accompanying drawing 2 is the A-A cutaway view of accompanying drawing 1;
Accompanying drawing 3 is the inboard nail of a this utility model front view;
Accompanying drawing 4 is the B-B cutaway view of accompanying drawing 3;
Accompanying drawing 5 is this utility model user mode sketch map.
See accompanying drawing 1,2,3,4, this utility model is by outside nail (1), and inboard nail (2) is formed, and described inboard nail (2) outer surface is half garden shape, and the another side center is provided with a groove (3), and groove (3) both sides respectively are provided with a boss (4), and cross section is
Shape, an end are " lymphogranuloma inguinale shape " (7) other end and are provided with a horizontal keyhole (8), and the outer surface of outside nail (1) also is half garden shape, and the another side center is provided with a boss (5), and boss (5) both sides respectively are provided with a groove (6), and cross section is
Shape, an end are " lymphogranuloma inguinale shape " (7), and the other end is provided with a horizontal keyhole (8), the boss on outside nail (1) and the inboard nail (2), and groove is mutual chimeric and constitute a garden cylindricality integral body.
See accompanying drawing 5, operation principle of the present utility model and using method are sketched in following: earlier knochenbruch is resetted, fix with the fracture positioning clamp, make 2CM stringer otch at the internal malleolus place, cut a hole bone groove at the bottom of half garden shape Dou, along this traverse drill one nail road, the inboard nail is squeezed into 1/4-1/3 along the nail road with special bone awl; The nailing guiding is placed in the inboard to be nailed on, simultaneously, outside nail is plugged on the nailing guide, pro-ankle fixed point, 1/4-1/3 with outside nail squeezes in the knochenbruch with method, alternately two nails is driven into then, when staying 20MM outside following closely tail, to follow closely Caudad tibia axis and bend about 15 °, to follow closely rear attack again and go in the tibia, nail tail major part is imbedded in the bone groove, a bolt will be placed horizontal keyhole (8), and it is fastening with nut, this utility model is owing to adopt in the nailing guide general, nail location, the outside, thereby in guaranteeing, outside nail axial line is in same plane, and the occlusal surface of both sides nail is all perpendicular to this plane, and interior outside nail is reached the last all with its front end bending, thereby, can guarantee that two nails intersect in medullary cavity, and then can guarantee boss, groove is chimeric mutually, thereby guarantee that this utility model has good bending resistance, resistance to compression, the antitorque biomechanical property that waits, simultaneously, will follow closely pre-bending and be driven into, therefore, two trianglees of formation in medullary cavity are promptly followed closely tail and sclerotin is K, L, 3 phase embeddings of J constitute a triangle; Ailhead and tibia upper end spongy bone or pulp cavity wall be embedding H mutually, I, 3 of J constitute a triangle, this shows, fixed form of the present utility model, on the one hand by mutual interlock total (J point), horizontal tying connects, make whole internal fixation form an integral body, interlock section and two nail tails, ailhead forms two stable triangle in same plane respectively, constitutes the stability fundamental of self, on the other hand, by horizontal bolt and nail and the interior each point embedding mutually of pulp cavity, form five complete dot structure (H again, I, J, K, L), strengthened its biomechanical property greatly, and it is convenient to advance nail, fixing reliable, especially to distance ankle joint 5CM with interior fracture, its superiority is more obvious.
In sum, this utility model is simple in structure, and is reasonable in design, and processing and manufacturing is easy, easy for operation, internal fixation is rational in infrastructure, and is solid and reliable, biomechanical property is good, is suitable for as the fracture of tibia internal fixation device, be particularly suitable for as apart from ankle joint 5CM with interior bone fracture internal fixing device tool.
Claims (1)
- Semicircle interlocking intramedullary nail comprises outside nail (1), and inboard nail (2) is characterized in that inboard nail (2) outer surface is half garden shape, and the another side center is provided with a groove (3), and groove (3) both sides respectively are provided with a boss (4), and cross section is Shape, an end are " lymphogranuloma inguinale shape " (7) other end and are provided with a horizontal keyhole (8), and the outer surface of outside nail (1) also is half garden shape, and the another side center is provided with a boss (5), and boss (5) both sides respectively are provided with a groove (6), and cross section isShape, an end are " lymphogranuloma inguinale shape " (7), and the other end is provided with a horizontal keyhole (8), the boss on outside nail (1) and the inboard nail (2), and groove is mutual chimeric and constitute a garden cylindricality integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235263 CN2271879Y (en) | 1996-07-12 | 1996-07-12 | Half round locked intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96235263 CN2271879Y (en) | 1996-07-12 | 1996-07-12 | Half round locked intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2271879Y true CN2271879Y (en) | 1998-01-07 |
Family
ID=33911370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96235263 Expired - Fee Related CN2271879Y (en) | 1996-07-12 | 1996-07-12 | Half round locked intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2271879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877823A (en) * | 2015-02-17 | 2016-08-24 | 生物合成物有限公司 | Device to fill a bone void whilst minimising pressurisation |
-
1996
- 1996-07-12 CN CN 96235263 patent/CN2271879Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877823A (en) * | 2015-02-17 | 2016-08-24 | 生物合成物有限公司 | Device to fill a bone void whilst minimising pressurisation |
| CN105877823B (en) * | 2015-02-17 | 2020-03-17 | 生物合成物有限公司 | Device for filling bone voids and minimizing pressurization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: 515031 ORTHOPEDICS, SHANTOU UNIVERSITY MEDICAL COLLEGE ATTACHED TOTHE SECOND HOSPITAL, GUANGDONG TO: XIANGYAYI YARD, YIKE COLLEGE, HUNAN PROVINCE, 410008 |
|
| CP03 | Change of name, title or address |
Address after: 410008 Department of orthopedics, Xiangya Hospital, Hunan Medical University Patentee after: Zhang Hongqi Address before: 515031 Department of orthopedics, Second Affiliated Hospital of Medical College of Shantou University, Guangdong Patentee before: Zhang Hongqi |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |