CN105125266A - Self-tapping intramedullary fixation device suitable for long bone fractures - Google Patents
Self-tapping intramedullary fixation device suitable for long bone fractures Download PDFInfo
- Publication number
- CN105125266A CN105125266A CN201510649433.4A CN201510649433A CN105125266A CN 105125266 A CN105125266 A CN 105125266A CN 201510649433 A CN201510649433 A CN 201510649433A CN 105125266 A CN105125266 A CN 105125266A
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- CN
- China
- Prior art keywords
- self
- fixation device
- drilling rod
- tapping
- fracture
- 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.)
- Pending
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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
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- 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
Abstract
The invention discloses a self-tapping intramedullary fixation device suitable for long bone fractures. The self-tapping intramedullary fixation device is a rod-like body, wherein the rod-like body is composed of a spring body fixedly connected between a drilling rod and a handle; the drilling rod and the handle are of tubular structures; the end part of the drilling rod is provided with a drilling edge; a spiral chip groove is formed in the outer circumferential surface of the drilling rod; and locking holes are respectively formed in the handle and the drilling rod. The self-tapping intramedullary fixation device decided to adopt a right or left spiral groove according to the direction of a fracture line can play a role in pressurizing a fracture end, reduce operative wounds and complications in an operation, achieve slightest wounds and lowest X-ray exposed quantity and also achieve the aim of effectively fixing the fractures, and cannot influence the projection perspective of an intra-operative C-arm. By using the self-tapping intramedullary fixation device, the defects of the traditional fracture fixation dissection can be effectively avoided, the operation time and the recovery time can be greatly shortened, and the pain of a patient can be greatly relieved. The self-tapping intramedullary fixation device is reasonable in structure, simple in operation, flexible in operation and control, accurate in location, firm in location, better in elastic modulus, free of stripping periosteum and reaming, and capable of effectively promoting fracture healing and achieving the function of early recovering limbs and the patient.
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 many employing open reduction blade plate internal fixtion and intramedullary pin internal fixtion, blade plate internal fixtion long incision, wound is large, and traditional Therapeutic Method need cut and appear fracture area, then reduction fixation is carried out, this method is large to fracture soft tissue injury around, and intraoperative hemorrhage is many, and damage is large, 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 the same with blade plate screw, Intramedullary nailing belongs to rigid structure, insert in process can not adapt to well local skeletal form, surrounding soft tissue and osseous tissue may be extruded.Intramedullary pin elastic modelling quantity, much larger than human normal skeleton, easily causes stress raisers.Employing Intramedullary nailing long bone fracture, the complication such as internal fixtion loosens, fracture, nonunion happen occasionally.In addition, Intramedullary nailing needs to carry out expansion marrow, may cause the complication such as fat embolism match, pulmonary infarction when expanding marrow.Therefore, urgently research and develop a kind of bionical, elastic modelling quantity closer to skeleton and also intramedullary pin can be reduced expand the intramedullary nail fixation device that marrow exists fat embolism, pulmonary infarction equivalent risk.
Summary of the invention
The invention provides a kind of self-taped type Medullary fixation device for long bone fracture, to overcome the drawback that prior art exists.
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 be 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, and handle and drilling rod offer lock hole respectively.
Described spiral type chip area is right spiral or left-hand screw groove.
The length of described spring body is 3/5 ~ 7/10 of rhabodoid length.
The length of described drilling rod is 4/25 ~ 1/5 of rhabodoid length.
The technological progress that the present invention obtains:
The present invention is directed to the feature of long bone shaft fracture, existing intramedullary needle basis is improved, a spring body is added by the middle of original integral type intramedullary needle, the structure of spring body can strengthen 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 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 of the present invention and mechanical stimulus, determine according to the direction of fracture line the present invention using right spiral or left-hand screw groove, the effect to fracture end pressurization can be played, right spiral or left-handed screw channel structural design can comply with fracture direction, offset corresponding fracture stress, and internal fixtion is strengthened in final pressurization, 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, effectively can reduce the risk that the complication such as inside-fixture loosens, fracture occur, the present invention does not affect C-arm in art and throws according to the visual field, X-ray examination device separately or can be coordinated to carry out minimally-invasive treatment, wound can be reduced further and realize minimum x-ray to expose.The present invention is rational in infrastructure, flexibly simple to operate, and elastic modelling quantity is good, fixed, avoiding periosteum stripping and expanding marrow stimulates, and effectively can promote 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 using state reference view of the present invention.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, the self-taped type Medullary fixation device that the present invention is used for long bone fracture is a rhabodoid, this rhabodoid is made up of the spring body 2 be 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 change after surgery, and can only along long stock 5 axially in all directions fine motion, the length of spring body 2 is 3/5 ~ 7/10 of rhabodoid length, the length of drilling rod 1 is 4/25 ~ 1/5 of rhabodoid length, 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 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 insert the present invention in pulp cavity after, 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 inserting in process, thus reducing crush injury to surrounding soft tissue, elasticity inherently and fine motion simultaneously makes at utmost to reduce stress shielding while fracture fixation, and the fine motion of fracture end also can stimulate the quickly-healing of fracture.
Claims (4)
1. one kind is applicable to the self-taped type Medullary fixation device of long bone fracture, it is a rhabodoid, it is characterized in that described rhabodoid is made up of the spring body be 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, and handle and drilling rod offer lock hole respectively.
2. the self-taped type Medullary fixation device being applicable to long bone fracture according to claim 1, is characterized in that described spiral type chip area is right spiral or left-hand screw groove.
3. the self-taped type Medullary fixation device being applicable to long bone fracture according to claim 1, is characterized in that the length of described spring body is 3/5 ~ 7/10 of rhabodoid length.
4. the self-taped type Medullary fixation device being applicable to long bone fracture according to claim 1, is characterized in that the length of described drilling rod is 4/25 ~ 1/5 of rhabodoid length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649433.4A CN105125266A (en) | 2015-10-10 | 2015-10-10 | Self-tapping intramedullary fixation device suitable for long bone fractures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649433.4A CN105125266A (en) | 2015-10-10 | 2015-10-10 | Self-tapping intramedullary fixation device suitable for long bone fractures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105125266A true CN105125266A (en) | 2015-12-09 |
Family
ID=54711108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510649433.4A Pending CN105125266A (en) | 2015-10-10 | 2015-10-10 | Self-tapping intramedullary fixation device suitable for long bone fractures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105125266A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997214A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Intramedullary interlocking internal nail |
| CN106388920A (en) * | 2016-08-05 | 2017-02-15 | 曾逸豪 | Bone nail |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2552480Y (en) * | 2002-06-11 | 2003-05-28 | 黄志海 | Bone drill |
| CN101010044A (en) * | 2004-06-11 | 2007-08-01 | 芯赛斯公司 | Intramedullary rod with spiraling flutes |
| CN101006937A (en) * | 2006-01-24 | 2007-08-01 | 比德曼莫泰赫有限公司 | Connecting-rod having external elastic member |
| CN101416902A (en) * | 2008-12-09 | 2009-04-29 | 张奇 | Elastic intramedullary nail |
| CN202821570U (en) * | 2012-08-17 | 2013-03-27 | 苏州瑞华医院有限公司 | Static-and-dynamic-exchange femoral nail |
| US20130116693A1 (en) * | 2005-05-18 | 2013-05-09 | Sonoma Orthopedic Products, Inc. | Straight intramedullary fracture fixation devices and methods |
| CN205411287U (en) * | 2015-10-10 | 2016-08-03 | 陈伟 | Self tapping type marrow internal fixation device suitable for long bone fracture |
-
2015
- 2015-10-10 CN CN201510649433.4A patent/CN105125266A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2552480Y (en) * | 2002-06-11 | 2003-05-28 | 黄志海 | Bone drill |
| CN101010044A (en) * | 2004-06-11 | 2007-08-01 | 芯赛斯公司 | Intramedullary rod with spiraling flutes |
| US20140039496A1 (en) * | 2004-06-11 | 2014-02-06 | DePuy Synthes Products, LLC | Intramedullary Rod With Spiraling Flutes |
| US20130116693A1 (en) * | 2005-05-18 | 2013-05-09 | Sonoma Orthopedic Products, Inc. | Straight intramedullary fracture fixation devices and methods |
| CN101006937A (en) * | 2006-01-24 | 2007-08-01 | 比德曼莫泰赫有限公司 | Connecting-rod having external elastic member |
| CN101416902A (en) * | 2008-12-09 | 2009-04-29 | 张奇 | Elastic intramedullary nail |
| CN202821570U (en) * | 2012-08-17 | 2013-03-27 | 苏州瑞华医院有限公司 | Static-and-dynamic-exchange femoral nail |
| CN205411287U (en) * | 2015-10-10 | 2016-08-03 | 陈伟 | Self tapping type marrow internal fixation device suitable for long bone fracture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997214A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Intramedullary interlocking internal nail |
| CN106388920A (en) * | 2016-08-05 | 2017-02-15 | 曾逸豪 | Bone nail |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |