CN205411287U - Self tapping type marrow internal fixation device suitable for long bone fracture - Google Patents
Self tapping type marrow internal fixation device suitable for long bone fracture Download PDFInfo
- Publication number
- CN205411287U CN205411287U CN201520779603.6U CN201520779603U CN205411287U CN 205411287 U CN205411287 U CN 205411287U CN 201520779603 U CN201520779603 U CN 201520779603U CN 205411287 U CN205411287 U CN 205411287U
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- fracture
- long bone
- fixation device
- rhabodoid
- 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
- 208000010392 Bone Fractures Diseases 0.000 title claims abstract description 31
- 238000010079 rubber tapping Methods 0.000 title abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 31
- 208000027418 Wounds and injury Diseases 0.000 abstract description 5
- 208000006735 Periostitis Diseases 0.000 abstract description 2
- 210000003460 periosteum Anatomy 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 241001561899 Otomys Species 0.000 abstract 1
- 230000002315 pressor effect Effects 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 208000003241 Fat Embolism Diseases 0.000 description 2
- 208000006193 Pulmonary infarction Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 230000007575 pulmonary infarction Effects 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 208000025962 Crush injury Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 206010058046 Post procedural complication Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 206010071229 Procedural haemorrhage Diseases 0.000 description 1
- 208000026137 Soft tissue injury Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a self tapping type marrow internal fixation device suitable for long bone fracture, it is a rhabodoid, and the rhabodoid comprises the bullet spring body that a drilling rod and leader linked firmly within a definite time, and drilling rod and handle are the siphonozooid structure, and the drilling rod tip is equipped with the drilling sword, and the outer periphery of drilling rod is equipped with the spiral chip groove, has offered the locking hole on handle and drilling rod respectively. Right spiral or left -hand screw groove are used in direction decision according to the fracture line the utility model discloses, can play the pressor effect of fracture end, operation wound and complication in the reducible art do not influence in the art C type arm and throw and shine the field of vision, can realize minimum wound, the minimum X line volume of exposing, reach the purpose of effective fixed fracture. Can effectively avoid the shortcoming of the fixed otomy of tradition fracture, it is painful to shorten operation time, recovery time and patient greatly. Rational in infrastructure, easy operation controls the flexibility, and the location is accurate, and fixed firm, elastic modulus is better, does not peel off the periosteum, need not to expand the marrow, can effectively promote the union, can reach early recovering limbs and patient's function.
Description
Technical field
The present invention relates to a kind of Medullary fixation device for long bone fracture, belong to orthopedic medical device technical field.
Background technology
Long bone fracture is clinical common fracture, now fix and fixing in intramedullary pin in many employing open reduction blade plates, fixing long incision in blade plate, wound is big, and traditional Therapeutic Method need to cut and appear fracture area, then reduction fixation is carried out, this method is big to the soft tissue injury around fracture, and intraoperative hemorrhage is many, and damage is big, and needing secondary to take out, patient's post-operative recovery time is long.Intramedullary nailing operation wound is little, increasingly extensive at orthopedics clinic practice.But as blade plate screw, Intramedullary nailing belongs to rigid structure, local skeletal form can not be well adapted for during inserting, may press into surrounding soft tissue and osseous tissue.Intramedullary pin elastic modelling quantity is much larger than human normal skeleton, is easily caused stress raisers.Use Intramedullary nailing long bone fracture, interior fixing loosen, fracture, the complication such as nonunion happen occasionally.Additionally, Intramedullary nailing needs to carry out expanding marrow, when expanding marrow, the complication such as fat embolism match, pulmonary infarction may be caused.It would therefore be highly desirable to research and develop a kind of bionical, elastic modelling quantity closer to skeleton and also intramedullary pin can be reduced and expand marrow and there is fat embolism, the intramedullary nail fixation device of pulmonary infarction equivalent risk.
Summary of the invention
The present invention provides a kind of self-taped type Medullary fixation device for long bone fracture, with the drawback overcoming prior art to exist.
For realizing the object of the invention, this self-taped type Medullary fixation device for long bone fracture is a rhabodoid, it is characterized in that described rhabodoid is made up of the spring body being connected between a drilling rod and leader, described drilling rod and handle are tubular body structure, drill rod end is provided with drilling sword, drilling rod outer circumference surface is provided with spiral type chip area, offers lock hole on handle and drilling rod respectively.
Described spiral type chip area is right spiral or left-hand screw groove.
The 3/5～7/10 of a length of rhabodoid length of described spring body.
The 4/25～1/5 of a length of rhabodoid length of described drilling rod.
The technological progress that the present invention obtains:
The present invention is directed to the feature of long bone shaft fracture, improve on the basis of existing intramedullary needle, a spring body is added in the middle of original integral type intramedullary needle, the structure of spring body can strengthen the elasticity of the present invention, it is made more to mate with the elastic modelling quantity of human body long bone, its elastic modelling quantity can increase the elastic deformation of the present invention, more adapts to body mechanics's feature, and its fine motion feature can the growth of effective stimulus fracture site.Drilling rod outer circumference surface adds spiral grooves, obviate original smooth design, precession strength can be strengthened, reduce pressure when inserting the present invention and mechanical stimulus, determine to use right spiral or the present invention of left-hand screw groove according to the direction of fracture line, the effect to fracture end pressurization can be played, right spiral or the design of left-handed screw channel structure can comply with fracture direction, offset stress of fracturing accordingly, and final pressurization is fixing in strengthening, it combines with the drilling sword of end, can strengthen self tapping ability further.Screw thread after precession can also increase the hold to sclerotin, combine with lock screw, can effectively reduce the risk that the complication such as loosening, the fracture of inside-fixture occur, the present invention does not affect C-arm in art and throws according to the visual field, can individually or coordinate X-ray examination device carry out minimally-invasive treatment, can reduce further wound and realize minimum x-ray expose.Present configuration is reasonable, simple to operate flexibly, elastic modelling quantity is good, fixed, it is to avoid periosteum stripping and expand marrow and stimulate, can effectively facilitate union of fracture, make patient can carry out functional exercise in early days, reduce post-operative complication at a specified future date, there is excellent Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is that the present invention uses state reference schematic diagram.
Detailed description of the invention
nullSuch as Fig. 1、Shown in Fig. 2，The present invention is a rhabodoid for the self-taped type Medullary fixation device of long bone fracture，This rhabodoid is made up of the spring body 2 being connected between a drilling rod 1 and leader 3，This spring body 2 has high resistance to compression and tensile strength，Its length does not changes after surgery，And can only be axial in all directions fine motion along long stock 5，The 3/5～7/10 of a length of rhabodoid length of spring body 2，The 4/25～1/5 of a length of rhabodoid length of drilling rod 1，Drilling rod 1 and handle 3 are a tubular body structure，The leading section of drilling rod 1 is provided with drilling sword，Drilling rod outer circumference surface is provided with spiral type chip area，Spiral type chip area is right-hand screw chip area or left-hand screw chip area，Handle 3 and drilling rod 1 offer lock hole respectively，For improving the fix tightly solidity of the present invention，On handle 3 and drilling rod 1, lock hole offers place，Handle 3 and drilling rod 1 are solid structure.
By self tapping effect, tail cap 4 is screwed in after pulp cavity is built into the present invention, along with under human muscle's motion, human bady gravitational effect and External Force Acting, drilling rod 1 and handle 3 can produce fine motion, drilling rod 1 is made to produce hettocyrtosis during inserting, thus reducing the crush injury to surrounding soft tissue, elasticity and fine motion the most inherently make at utmost reduce stress shielding while fracture fixation, and the fine motion of fracture end also can stimulate the quickly-healing of fracture.
Claims (4)
1. the self-taped type Medullary fixation device being applicable to long bone fracture, it is a rhabodoid, it is characterized in that described rhabodoid is made up of the spring body being connected between a drilling rod and leader, described drilling rod and handle are tubular body structure, drill rod end is provided with drilling sword, drilling rod outer circumference surface is provided with spiral type chip area, offers lock hole on handle and drilling rod respectively.
The self-taped type Medullary fixation device being applicable to long bone fracture the most according to claim 1, it is characterised in that described spiral type chip area is right spiral or left-hand screw groove.
The self-taped type Medullary fixation device being applicable to long bone fracture the most according to claim 1, it is characterised in that the 3/5～7/10 of a length of rhabodoid length of described spring body.
The self-taped type Medullary fixation device being applicable to long bone fracture the most according to claim 1, it is characterised in that the 4/25～1/5 of a length of rhabodoid length of described drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779603.6U CN205411287U (en) | 2015-10-10 | 2015-10-10 | Self tapping type marrow internal fixation device suitable for long bone fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779603.6U CN205411287U (en) | 2015-10-10 | 2015-10-10 | Self tapping type marrow internal fixation device suitable for long bone fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205411287U true CN205411287U (en) | 2016-08-03 |
Family
ID=56517749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520779603.6U Expired - Fee Related CN205411287U (en) | 2015-10-10 | 2015-10-10 | Self tapping type marrow internal fixation device suitable for long bone fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205411287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125266A (en) * | 2015-10-10 | 2015-12-09 | 陈伟 | Self-tapping intramedullary fixation device suitable for long bone fractures |
| CN107669327A (en) * | 2017-11-08 | 2018-02-09 | 南方医科大学南方医院 | Possesses minimally invasive and support function non-expanding bone intramedullary nail for treating femoral fracture |
-
2015
- 2015-10-10 CN CN201520779603.6U patent/CN205411287U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105125266A (en) * | 2015-10-10 | 2015-12-09 | 陈伟 | Self-tapping intramedullary fixation device suitable for long bone fractures |
| CN107669327A (en) * | 2017-11-08 | 2018-02-09 | 南方医科大学南方医院 | Possesses minimally invasive and support function non-expanding bone intramedullary nail for treating femoral fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20161010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |