CN106821480A - Femur pressure self-locked intramedullary needle - Google Patents
Femur pressure self-locked intramedullary needle Download PDFInfo
- Publication number
- CN106821480A CN106821480A CN201710125395.1A CN201710125395A CN106821480A CN 106821480 A CN106821480 A CN 106821480A CN 201710125395 A CN201710125395 A CN 201710125395A CN 106821480 A CN106821480 A CN 106821480A
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- CN
- China
- Prior art keywords
- pin
- rotary blade
- distal
- interior
- push
- 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.)
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Classifications
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/7258—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/7258—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
- A61B17/7266—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone with fingers moving radially outwardly
-
- 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
- A61B17/72—Intramedullary pins, nails or other devices
-
- 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
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- 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 discloses a kind of femur locking intramedullary needle, function with pressurization pairing fracture end, belong to medical instruments field, the anti-rotary blade of distal section two, near-end Push-pull bolt, Distal occlusion bolt that the anti-rotary blade of proximal segment two and the interior pin that specially orthopedic fixation device tool, including outer pin, interior pin are linked with outer pin are linked.Wherein described outer pin, the interior crown are designed as certain radian according to femoral bone cavitas medullaris feature, and the outer wall both sides of outer pin are provided with decompression chase.This intramedullary needle is suitable for the fracture of lower 1/3 to femoral bone tuberosity lower portion in femur.Suitable intramedullary needle is chosen in operation to insert after reset after the disconnected section pulp cavitys of fracture two, twist rotation near-end Push-pull bolt, Push-pull bolt promotes interior pin distal movement, the anti-rotary blade of nearly distal section is promoted to open the incision nearly distal end pulp cavity wall of femur in positive and negative " eight " word, when anti-rotary blade incision pulp cavity wall can not open again, being further continued for stubborn rotation Push-pull bolt can pressurize to fracture site.
Description
Technical field
The invention belongs to medical instruments field, specially a kind of new-type femur locking intramedullary needle, with pressurization pairing bone
Roll over the function at end.
Background technology
Femur is the most thick long bone of human body, adheres to and stretches in the wrong, interior receipts, abduction, interior outward turning muscle group, various stress concentrations, and
Femoral fracture is the common fracture of Orthopeadic Surgery, and modern Orthopeadic Surgery is fixed for femoral fracture first-selection intramedullary nail with nail, with powerful
Anti- rotation, the function of anti-folding.But intramedullary nail with nail there is also certain defect, specially：(1), the radian of intramedullary needle is impossible
The pulp cavity radian of all fracture patients is adapted to, when the radian of intramedullary needle and the pulp cavity radian of patient are not suitable with, intramedullary needle is inserted,
Fracture site occurs separation, then inserts 4 self-locking nails, and fracture end will be fixed on released state, be unfavorable for union,
When check fracture site of being made film after the clinical first half of the year has no substantially healing sign, take and intramedullary nail with nail near-end pinning is taken out real
Existing motorization, encourages patient's weight-bearing activities, and the extruding pairing of fracture end is realized by body weight, and effect is all undesirable.（2）, femur bone
After folding inserts intramedullary needle, when radian and the pulp cavity radian of intramedullary needle are not suitable with, intramedullary needle occurs different degrees of deformation, causes
Intramedullary needle distal locking nail aims at difficult, increases operating difficulty, delays operating time.Clinically also used various self-lockings
Intramedullary needle, because its nearly distal section self-locking fin strut it is limited, it is anti-rotation function it is too poor, no longer use now.
The content of the invention
The present invention is a kind of femur pressure self-locked intramedullary needle provided to solve above prior art deficiency.
The present invention is for the solution technical scheme that is used of above technical problem：A kind of femur locking intramedullary needle, with plus
Press the function of pairing fracture end.The distal section of the anti-rotary blade of proximal segment two and interior needle pin chain including outer pin, interior pin and outer needle pin chain
Two anti-rotary blades, near-end Push-pull bolt, Distal occlusion bolt.It is characterized in that：The described outer crown sets according to femoral bone cavitas medullaris feature
Certain radian is calculated as, two side is provided with decompression chase.The outer nearly distal section internal diameter of pin is all higher than middle part, is respectively equipped with certain distance
Internal tapping, is Push-pull bolt work department, Distal occlusion bolt fixed part, and proximal segment external diameter is larger, and afterbody outer wall is provided with part and attacks
The inserting of silk, extraction portion, then to have the nearly distal section two side of outer pin to be equipped with symmetrical（Or it is antisymmetric）Anti- rotary blade chute, it is preceding
Rear wall is provided with anti-rotary blade pin chain hole perpendicular to chute plane correct position.
Described interior pin is divided into three parts, and the top coronal-plane of distal section is provided with the anti-rotary blade gap in distal end, perpendicular to gap
Correct position is provided with the anti-rotary blade pin chain hole in distal end, and remaining part is nut portions；The distal end in stage casing is shorter threaded shank, can be with distal section
Nut portions tighten fixation, and remaining part is the elongated rod shape of certain radian；Proximal segment is integrated with stage casing, is the tubular being relatively large in diameter, inside and outside
Side wall correct position is provided with the anti-rotary blade chute of symmetrical near-end, and front and rear wall correct position is provided with symmetrical anti-rotary blade pin and slides
Groove.
Described near-end Push-pull bolt is divided into two parts of rotary movable connection, anterior to be fixed with interior backshank end, rear portion
Rotation portion is twisted to be provided with interior hexagon bolt, feature can promote interior pin to pass in and out when being and twisting supination portion, and interior pin will not be rotated.
Described Distal occlusion bolt front end after internal and external pin assembling, is screwed into outer needle distal for coniform, front end cone with it is remote
Hold anti-rotary blade to offset, when interior pin is promoted by Push-pull bolt, counter can push away anti-rotary blade and open incision DF pulp cavity wall.
The anti-rotary blade handing-over of described nearly distal end is divided into scissor and two kinds of jaw type, when anti-rotary blade is designed as scissor outside
The anti-rotary blade chute in the nearly distal section two side of pin should be designed as skew symmetry, and anti-rotary blade is designed as outer pin nearly distal section two side during jaw type
Anti- rotary blade chute should be designed as symmetrically.
The invention is reasonable in design, easy to use.
Accompanying drawing 1 is structural representation profile of the invention.
Accompanying drawing 2 is plan of the invention.
Specific embodiment
The present invention is described in detail below with reference to Figure of description：
As shown in Figure 1 and Figure 2, the anti-rotary blade 3, distal section of a kind of femur pressure self-locked intramedullary nail, including outer pin 1, interior pin 2, proximal segment
Anti- rotary blade 4, near-end Push-pull bolt 5, Distal occlusion bolt 6；The anti-rotary blade pin in the outer anti-rotary blade pin chain hole 7, distal section of pin proximal segment
Chain hole 8.
Described outer pin 1 is set with interior pin 2, and the described near-end of interior pin 2 is fixed with Push-pull bolt 5, described Distal occlusion
Bolt 6 is twisted with the distal end of outer pin 1 after internal and external pin assembling and is rotated with fixed, the anti-rotary blade 4 of described distal section and the cone of Distal occlusion bolt 6
Offset.
After described anti-rotary blade 3 inserts outer pin 1 and the anti-rotary blade chute of the proximal segment of interior pin 2, by pin by pin chain hole 7 and
The proximal segment pin chute of interior pin 2 and the proximal segment pin chain of outer pin 1.
After described anti-rotary blade 4 inserts the anti-rotary blade gap of the anti-rotary blade chute of the distal section of outer pin 1 and the distal end of interior pin 2, by
By pin chain hole 8 and the distal pin chain hole of interior pin 2 and the distal section pin chain of interior pin 2, cotter length should not influence interior pin 2 to pass in and out fortune to pin
It is dynamic.
Claims (5)
1. a kind of femur locking intramedullary needle, the function with pressurization pairing fracture end, including outer pin, interior pin are linked with outer pin
The anti-rotary blade of distal section two, near-end Push-pull bolt, Distal occlusion bolt that the anti-rotary blade of proximal segment two is linked with interior pin；Its feature exists
In：The described outer crown is designed as certain radian according to femoral bone cavitas medullaris feature, and two side is provided with decompression chase, in the outer nearly distal section of pin
Footpath is all higher than middle part, is respectively equipped with the internal tapping of certain distance, is Push-pull bolt work department, Distal occlusion bolt fixed part, and
Proximal segment external diameter is larger, and afterbody outer wall is provided with the inserting of part tapping, extraction portion, then to have the nearly distal section left and right sidewall of outer pin to be equipped with right
Claim（Or it is antisymmetric）The anti-rotary blade chute of nearly distal section, front-rear side walls are provided with anti-rotary blade perpendicular to chute plane correct position
Pin chain hole.
2. femur pressure self-locked intramedullary needle according to claim 1, it is characterised in that：Interior pin is divided into three parts, distal section
Top coronal-plane is provided with the anti-rotary blade gap in distal end, and the anti-rotary blade pin chain hole in distal end, remaining part are provided with perpendicular to gap correct position
It is nut portions；The distal end in stage casing is shorter threaded shank, can tighten fixation with distal section nut portions, and remaining part is the stock of certain radian
Shape；Proximal segment is integrated with stage casing, is the tubular being relatively large in diameter, and left and right sidewall correct position is provided with the anti-rotary blade of symmetrical near-end and slides
Groove, front-rear side walls correct position is provided with symmetrical anti-rotary blade pin chute.
3. femur pressure self-locked intramedullary needle according to claim 1, it is characterised in that：Near-end Push-pull bolt is divided into rotatable
Two parts of flexible connection, anterior to be fixed with interior backshank end, rotation portion is twisted in rear portion to be provided with interior hexagon bolt, and feature is to twist supination
Interior pin can be promoted to pass in and out during portion, and interior pin will not be rotated.
4. femur pressure self-locked intramedullary needle according to claim 1, it is characterised in that：Distal occlusion bolt front end is circular cone
Shape, after internal and external pin assembling, is screwed into outer needle distal, and front end cone offsets with the anti-rotary blade in distal end, when interior pin is promoted by Push-pull bolt,
Counter can push away anti-rotary blade and open and cut into DF pulp cavity wall.
5. femur pressure self-locked intramedullary needle according to claim 1, it is characterised in that：The nearly anti-rotary blade interlinkage in distal end is divided into
Scissor and two kinds of jaw type, the anti-rotary blade chute in the outer nearly distal section two side of pin should be designed as tiltedly when anti-rotary blade is designed as scissor
Symmetrically, the anti-rotary blade chute in the outer nearly distal section two side of pin should be designed as symmetrically when anti-rotary blade is designed as jaw type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125395.1A CN106821480A (en) | 2017-03-04 | 2017-03-04 | Femur pressure self-locked intramedullary needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125395.1A CN106821480A (en) | 2017-03-04 | 2017-03-04 | Femur pressure self-locked intramedullary needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106821480A true CN106821480A (en) | 2017-06-13 |
Family
ID=59138479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710125395.1A Withdrawn CN106821480A (en) | 2017-03-04 | 2017-03-04 | Femur pressure self-locked intramedullary needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106821480A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481282A (en) * | 2020-06-08 | 2020-08-04 | 上海市浦东新区公利医院(第二军医大学附属公利医院) | Self-locking intramedullary nail device for proximal fibula fracture |
| CN113397676A (en) * | 2021-07-08 | 2021-09-17 | 王欣欣 | Anti-rotation orthopedic internal fixture |
| CN113606232A (en) * | 2021-06-29 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Double-end expansion connecting part |
-
2017
- 2017-03-04 CN CN201710125395.1A patent/CN106821480A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481282A (en) * | 2020-06-08 | 2020-08-04 | 上海市浦东新区公利医院(第二军医大学附属公利医院) | Self-locking intramedullary nail device for proximal fibula fracture |
| CN113606232A (en) * | 2021-06-29 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Double-end expansion connecting part |
| CN113397676A (en) * | 2021-07-08 | 2021-09-17 | 王欣欣 | Anti-rotation orthopedic internal fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170613 |