CN104323842A - External skeletal fixator - Google Patents
External skeletal fixator Download PDFInfo
- Publication number
- CN104323842A CN104323842A CN201410578512.6A CN201410578512A CN104323842A CN 104323842 A CN104323842 A CN 104323842A CN 201410578512 A CN201410578512 A CN 201410578512A CN 104323842 A CN104323842 A CN 104323842A
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- CN
- China
- Prior art keywords
- fixed
- exter
- fixing
- housing
- fixer
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- 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
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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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/62—Ring frames, i.e. devices extending around the bones to be positioned
Abstract
The invention relates to an external skeletal fixator, which comprises a transverse support frame, an external fixator and a longitudinal fixator, wherein the longitudinal fixator comprises an outer frame and a bone surface fixing assembly, the bone surface fixing assembly comprises a plurality of fixing blocks, fixing cables are arranged among the fixing blocks, the fixing blocks are fixedly arranged on the outer frame, and a support framework is defined among the fixing cables through the fixing blocks. The external skeletal fixator has the advantages that the matching of the outer frame and tensioning wires is adopted, one fixing mesh or a plurality of fixing meshes is/are formed through the tensioning wires with the smaller diameter under the support effect of the outer frame, the matching on the bone is realized, the tensioning wires have low elasticity, the bone fixation can be ensured, and meanwhile, the bone necrosis due to excessive compression of the tensioning wires on the bone surface can be prevented.
Description
Technical field
The present invention relates to a kind of exter-nal fixer, have and relate to a kind of cable that adopts and carry out the fixing exter-nal fixer of osseous part.
Background technology
Wait in orthopaedics therapy process in fracture, postoperatively penetrate epidermis frequently by various support, skeleton is fixed and makes it to recover, after recovery, then pass through trauma operation, support is removed, whole process need carries out Repeated Operation, the wound brought human muscle and skin portion is larger, and the convalescence after Miles operation is also long, the compressing that simultaneously traditional support brings osseous part and wound all larger;
Existing commercially to this, provide wound degree and minimizing operation number of times when much can reduce operation to a certain extent, the orthopedic fixer healed can be accelerated again simultaneously, if the patent No. is the invention of ZL201120537796.6, where it is proposed a kind of steel wire for skeleton portion parcel, this steel wire is by arranging absorbable material protective sleeve to reduce the damage to skeleton in Steel Wire Surface, reduce the probability of skeleton ischemic necrosis, but itself still realizes the fixing of osseous part by the mode be repeatedly wound around, after skeleton recovers, removing steel wire performs the operation still very large on the skin and muscle bed that bring, the long time is needed to recover,
For another example a kind of patent of invention of patella external fixer is called with ZL201420132756.7 name, wherein it is also proposed a kind of fixed mount of skeleton outside of Wicresoft, this structure comparison comparing class is similar to the fixed structure of steel nail generally used now, its main purpose realizes multi-faceted osseous part to fix, simultaneously the wound brought human body of thin steel nail is also smaller, secondary can be avoided to take out injury that operation brings human body and infection, but in its technical scheme, steel nail plays main supporting role, in order to ensure its certain support performance (i.e. bending strength) thus steel nail itself cannot do thin as acupuncture needle, so the reduction of its steel nail to human epidermal and flesh wound degree is still more limited, and steel nail itself is because its volume cause and special biological property cause, if use titanium alloy etc materials to make, difficulty of processing and cost are all higher, if use the good polymer of some biological properties to make, its intensity cannot ensure again, the main eyelid retractor of this invention is simultaneously an annular metal sheet, during installation, the limbs portion that can treat operation brings blocks, installing can be more difficult, also the accurate installation under X-ray shines cannot be realized,
So in sum, skeleton external stability utensil of the prior art still also exists many deficiencies, such as: the wound that installation brings, secondary take out operation wound, cost cannot reduce, installation difficulty is large.
Summary of the invention
The technical problem to be solved in the present invention is: overcome prior art medium-height trestle and install the technical problems such as wound is large, fixing operation is complicated, provides a kind of less to setter wound, can reduce the Orthopedic fixing support even not needing second operation.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of exter-nal fixer, comprise fixer in vitro, some longitudinal holders and surface of bone fixation kit, fixed by fixer in vitro between described some longitudinal holders, described longitudinal holder comprises housing, described surface of bone fixation kit comprises several fixed blocks, fixed cable is provided with between described fixed block, described fixed block is fixed on housing, comprise the support frame be at least made up of two fixed cable between described some longitudinal holders, described support frame contacts, realizes the support of skeleton with surface of bone.
As further innovation of the present invention, described housing is annular, and between described housing, parallel array formula is fixed on horizontal support.
As further innovation of the present invention, described fixed block comprises a fixing hole for fixing fixed cable, and the sidewall of described fixing hole is provided with lock-screw A.
As further innovation of the present invention, described fixed block comprises one for the sliding eye be socketed with housing, the sidewall of described sliding eye is provided with lock-screw B.
As further innovation of the present invention, described fixed cable comprises elastic threads, and the material of described elastic threads has biocompatibility.
As further innovation of the present invention, described elastic threads adopts aliphatic polyester to make.
As further innovation of the present invention, be provided with reinforced metal cable in the middle part of described elastic threads, the material of described reinforced metal cable has biocompatibility.
As further innovation of the present invention, described reinforced metal cable adopts titanium alloy to make.
As further innovation of the present invention, described housing comprises the connecting rod of more than two sections, is fixedly connected with between described connecting rod by contiguous block.
As further innovation of the present invention, described contiguous block is provided with the fixing hole of two relative contiguous block axisymmetrical, the sidewall of described fixing hole is provided with straight line groove, described contiguous block is provided with one and passes straight-line groove and the screw hole vertical with straight-line groove, in described screw hole, be provided with lock-screw.
The invention has the beneficial effects as follows:
1, the present invention adopts the cooperation of housing and elastic threads, by the less elastic threads of diameter under the support of housing, form one or more fixing mesh, thus the cooperation realized skeleton, because the low elasticity of elastic threads, not only can ensure the fixing of skeleton, elastic threads also can be prevented the excessive compressing of bone surface simultaneously, cause osteonecrosis;
The present invention is simultaneously because its diameter is less, so during initial surgery, block surface is also smaller, can compare accurate operation, and its wound face of the implantation of elastic threads only has aperture size, can realize the object of Minimally Invasive Surgery;
In addition the present invention also can realize being fastened to skeleton, thus adapts to the situation of comminuted fracture.
2, housing of the present invention also uses the loop configuration that profile is less, shielded area is also smaller, alleviates the weight of whole holder, reduces the difficulty of operation, also saves material.
3, elastic threads of the present invention adopts clamped-in style to fix, and this structure can improve the convenience of installation, and elastic threads also can be installed with a higher pretightning force simultaneously.
4, fixing for sliding between fixed block of the present invention and housing, the position between adjustment fixed block that can be convenient, thus easily according to concrete bone condition, the fixed position of adjustment elastic threads, greatly adds wide usage.
The elastic threads that the aliphatic polyester material 5, with biocompatibility is made, because its low biocompatible, after recovery, can stay in the body of human body, the wound degree that secondary removes operation can be reduced, if the destructiveness of skeleton own is little, secondary can not be carried out and remove operation.
6, strengthening cable that a titanium alloy makes also is added in tension cable of the present invention to prevent from straining the situation of the elastic threads fracture excessively caused, can directly be extracted out by the strengthening cable of titanium alloy after recovery, part stays in the body and also can not there is too large rejection problems.
7, housing of the present invention is combined by the rod member of more than two sections, can change the quantity of rod member easily according to concrete limbs diameter, also can be received on housing by fixed block cover easily simultaneously.
8, housing of the present invention is fixedly clamped by simple union joint, operates more convenient, and simultaneously for the material that the anti-radial forces such as carbon fiber are poor, this kind of fixed form can ensure certain constant intensity.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is scheme of installation of the present invention;
Fig. 2 is the schematic diagram of using state 1 of the present invention;
Fig. 3 is the schematic diagram of using state 2 of the present invention;
Fig. 4 is the profile of fixed block;
Fig. 5 is the transverse cross-sectional view of contiguous block;
Fig. 6 is housing profile;
In figure: 1, fixed block; 2, housing; 3, fixed cable; 4, skeleton A; 5, skeleton B; 6, skeleton C; 7,
1-1, fixing hole; 1-2, sliding eye;
2-1, connecting rod; 2-2, contiguous block;
2-2-1, fixing hole; 2-2-2, straight-line groove.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
embodiment 1
Outer bone anchor mainly comprises some longitudinal holders and the connection bracket for being connected and fixed each longitudinal holder, be provided with at the two ends of support for the fixer in vitro fixing with limb part simultaneously, this product is mainly improved the longitudinal holder for being connected with skeleton, cancels original steel nail type and fixes;
Specifically as shown in Figure 1, longitudinal holder in this product mainly comprises some fixed blocks 1, is provided with fixed cable 3 between described fixed block 1, and described fixed block is fixed on housing 2, by the location of fixed block on housing 2 between described fixed cable 3, thus surround support frame;
Wherein fixed block (as shown in Figure 4) comprises one for fixed block 1 being overlapped the sliding eye 1-2 received on housing 2, the inwall of sliding eye 1-2 is provided with lock-screw B, fixed block is also provided with one for the fixing hole 1-1 through fixed cable 3, same is provided with a lock-screw A for fixing fixed cable 3 on the sidewall of fixing hole 1-1 simultaneously;
Wherein fixed cable comprises the elastic threads that the aliphatic polyester material with biocompatibility is made, and is provided with the reinforced metal line that the titanium alloy that is similarly biocompatible materials is made in the middle part of elastic threads;
The elastic threads that the aliphatic polyester material with biocompatibility is made, because its low biocompatible, after recovery, can stay in the body of human body, the wound degree that secondary removes operation can be reduced, if the destructiveness of skeleton own is little, secondary can not be carried out and remove operation;
The strengthening cable that titanium alloy is made is to prevent from straining the situation of the elastic threads fracture excessively caused, and can directly be extracted out by the strengthening cable of titanium alloy after recovery, part stays in the body and also can not there is too large rejection problems;
In addition, as Fig. 5, shown in Fig. 6, the connecting rod 2-1 that housing 2 is made up of the carbon fibre materials of two arcs, be formed by connecting by contiguous block 2-2, the connecting rod of carbon fibre materials has higher rigidity, effectively can prevent distortion, quality is also lighter simultaneously, the health load of patient can be reduced, contiguous block 2-2 is provided with two fixing hole 2-2-1 be centrosymmetric relative to contiguous block 2-2 center, the sidewall of centre bore is also provided with straight-line groove 2-2-2, by the end of connecting rod 2-1 is inserted in fixing hole 2-2-1, tighten the lock-screw vertical with straight-line groove 2-2-2, connecting rod 2-1 is made to be clamped in fixing hole 2-2-1, realize fixing.
When fixing, as shown in Figure 2, because fixer in vitro is more common, and invention mainly improves longitudinal holder, so eliminate other irrelevant structures in Fig. 2, it is the fixing schematic diagram of single bone (skeleton A4) in Fig. 2, first as the case may be, housing 2 is socketed three pairs of fixed blocks 1, subsequently by the concrete profile of fixed block according to skeleton, be fixed on housing 2, then fixed cable 3 is penetrated into subcutaneous, until draw from the opposite side in limb portion, subsequently by the tension of the two ends of fixed cable 3 and by lock-screw A, fixed cable 3 is fixed, fixed cable on second group of fixed block is set subsequently, until skeleton is strapped in Main subrack that fixed cable shown in Fig. 2 surrounds, realize the fixing of skeleton.
embodiment 2
As shown in Figure 3, be the use schematic diagram of the present invention when carrying out many skeletal fixations;
Outer bone anchor mainly comprises some longitudinal holders and the connection bracket for being connected and fixed each longitudinal holder, be provided with at the two ends of support for the fixer in vitro fixing with limb part simultaneously, this product is mainly improved the longitudinal holder for being connected with skeleton, cancels original steel nail type and fixes;
Specifically as shown in Figure 1, longitudinal holder in this product mainly comprises some fixed blocks 1, is provided with fixed cable 3 between described fixed block 1, and described fixed block is fixed on housing 2, by the location of fixed block on housing 2 between described fixed cable 3, thus surround support frame;
Wherein fixed block (as shown in Figure 4) comprises one for fixed block 1 being overlapped the sliding eye 1-2 received on housing 2, the inwall of sliding eye 1-2 is provided with lock-screw B, fixed block is also provided with one for the fixing hole 1-1 through fixed cable 3, same is provided with a lock-screw A for fixing fixed cable 3 on the sidewall of fixing hole 1-1 simultaneously;
Wherein fixed cable comprises the elastic threads that the aliphatic polyester material with biocompatibility is made, and is provided with the reinforced metal line that the titanium alloy that is similarly biocompatible materials is made in the middle part of elastic threads;
As Fig. 5, shown in Fig. 6, the connecting rod 2-1 that housing 2 is made up of the carbon fibre materials of two arcs, be formed by connecting by contiguous block 2-2, the connecting rod of carbon fibre materials has higher rigidity, effectively can prevent distortion, quality is also lighter simultaneously, the health load of patient can be reduced, contiguous block 2-2 is provided with two fixing hole 2-2-1 be centrosymmetric relative to contiguous block 2-2 center, the sidewall of centre bore is also provided with straight-line groove 2-2-2, by the end of connecting rod 2-1 is inserted in fixing hole 2-2-1, tighten the lock-screw vertical with straight-line groove 2-2-2, connecting rod 2-1 is made to be clamped in fixing hole 2-2-1, realize fixing,
Represent the tibia on shank with skeleton B5 in Fig. 3, the fibula on shank is simulated with skeleton C6, first by two pairs of fixed blocks 1 and two fixed cable, realize the fixing of skeleton C5, simultaneously by other two pairs of fixed blocks 1 and other two fixed cable, realize the fixing of skeleton C6, the relative localization that finally can realize between two skeletons by one to two pairs of fixed blocks 1 and fixed cable.
Embodiment 3
Fixed cable can be carried out interconnection by the present invention simultaneously between the fixed block of different longitudinal holders, what be such as fixed has 3 longitudinal holders, comprise longitudinal holder A, longitudinal holder B, longitudinal holder C, each longitudinal holder comprises 4 fixed blocks, wherein four fixed blocks of longitudinal holder A are labeled as fixed block AI respectively, fixed block AII, fixed block AIII, fixed block AIV, when cross arrangement, fixed block AI on longitudinal holder A can and the fixed block BII of longitudinal holder B between connected by fixed cable, fixed block AII simultaneously on longitudinal holder A is connected by fixed cable with the fixed block CIV on longitudinal holder C, two fixed cable contact composition support frame with bone surface.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content in description, must determine its technical scope according to right.
Claims (10)
1. an exter-nal fixer, comprise fixer in vitro, some longitudinal holders and surface of bone fixation kit, fixed by fixer in vitro between described some longitudinal holders, described longitudinal holder comprises housing, it is characterized in that: described surface of bone fixation kit comprises several fixed blocks, fixed cable is provided with between described fixed block, described fixed block is fixed on housing, comprise the support frame be at least made up of two fixed cable between described some longitudinal holders, described support frame contacts, realizes the support of skeleton with surface of bone.
2. a kind of exter-nal fixer as claimed in claim 1, is characterized in that: described housing is annular, and between described housing, parallel array formula is fixed on horizontal support.
3. a kind of exter-nal fixer as claimed in claim 1, is characterized in that: described fixed block comprises a fixing hole for fixing fixed cable, and the sidewall of described fixing hole is provided with lock-screw A.
4. a kind of exter-nal fixer as claimed in claim 1, is characterized in that: described fixed block comprises one for the sliding eye be socketed with housing, the sidewall of described sliding eye is provided with lock-screw B.
5. a kind of exter-nal fixer as claimed in claim 1, it is characterized in that: described fixed cable comprises elastic threads, the material of described elastic threads has biocompatibility.
6. a kind of exter-nal fixer as claimed in claim 5, is characterized in that: described elastic threads adopts aliphatic polyester to make.
7. a kind of exter-nal fixer as claimed in claim 5, is characterized in that: be provided with reinforced metal cable in the middle part of described elastic threads, the material of described reinforced metal cable has biocompatibility.
8. a kind of exter-nal fixer as claimed in claim 7, is characterized in that: described reinforced metal cable adopts titanium alloy to make.
9. a kind of exter-nal fixer as claimed in claim 1, be is characterized in that: described housing comprises the connecting rod of more than two sections, is fixedly connected with between described connecting rod by contiguous block.
10. a kind of exter-nal fixer as claimed in claim 9, it is characterized in that: described contiguous block is provided with the fixing hole of two relative contiguous block axisymmetrical, the sidewall of described fixing hole is provided with straight line groove, described contiguous block is provided with one and passes straight-line groove and the screw hole vertical with straight-line groove, in described screw hole, be provided with lock-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578512.6A CN104323842A (en) | 2014-10-24 | 2014-10-24 | External skeletal fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578512.6A CN104323842A (en) | 2014-10-24 | 2014-10-24 | External skeletal fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104323842A true CN104323842A (en) | 2015-02-04 |
Family
ID=52398760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410578512.6A Pending CN104323842A (en) | 2014-10-24 | 2014-10-24 | External skeletal fixator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104323842A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893324A (en) * | 2019-04-16 | 2019-06-18 | 江苏尚美医疗器械有限公司 | A kind of External distraction appliance of graphene heating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5681309A (en) * | 1993-06-10 | 1997-10-28 | Texas Scottish Rite Hospital For Crippled Children | Distractor mechanism for external fixation device |
| US20090177199A1 (en) * | 2001-10-18 | 2009-07-09 | Lagwire, Llc | Cap device for use in the fixation of bone structures |
| CN202386758U (en) * | 2011-12-16 | 2012-08-22 | 张朝跃 | Absorbable patella net |
| CN203777028U (en) * | 2014-03-19 | 2014-08-20 | 天津市新中医疗器械有限公司 | External patella fixing rack |
-
2014
- 2014-10-24 CN CN201410578512.6A patent/CN104323842A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5681309A (en) * | 1993-06-10 | 1997-10-28 | Texas Scottish Rite Hospital For Crippled Children | Distractor mechanism for external fixation device |
| US20090177199A1 (en) * | 2001-10-18 | 2009-07-09 | Lagwire, Llc | Cap device for use in the fixation of bone structures |
| CN202386758U (en) * | 2011-12-16 | 2012-08-22 | 张朝跃 | Absorbable patella net |
| CN203777028U (en) * | 2014-03-19 | 2014-08-20 | 天津市新中医疗器械有限公司 | External patella fixing rack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893324A (en) * | 2019-04-16 | 2019-06-18 | 江苏尚美医疗器械有限公司 | A kind of External distraction appliance of graphene heating |
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Application publication date: 20150204 |