CN208989260U - Astragalus local route repair body with porous structure - Google Patents
Astragalus local route repair body with porous structure Download PDFInfo
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- CN208989260U CN208989260U CN201721567753.6U CN201721567753U CN208989260U CN 208989260 U CN208989260 U CN 208989260U CN 201721567753 U CN201721567753 U CN 201721567753U CN 208989260 U CN208989260 U CN 208989260U
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- astragalus
- local route
- route repair
- repair body
- porous structure
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Abstract
The utility model discloses a kind of astragalus local route repair body with porous structure, including astragalus local route repair body ontology, the trochoid face paste of the curved surface of the astragalus local route repair body ontology and former astragalus is closed, the edge of the astragalus local route repair body ontology, which is equipped with, to be carried out the curved surface of astragalus local route repair body ontology biased twice with hybrid junction surface methodology to suture a perforated grill structure obtained, and the perforated grill structure is octahedra porous structure；The astragalus local route repair body ontology is equipped with fixing glue.The utility model can achieve the effect that quickly to repair, and shorten the waiting time of patient, improve the response speed of prosthesis supply.
Description
Technical field
The utility model relates to the design of prosthesis and manufacture fields, and in particular to a kind of astragalus with porous structure
Local route repair body.
Background technique
Astragalus is played an important role in the biomethanics of human foot, and the weight of people reaches foot by astragalus from shin bone
Bone, and people, in foot movement, the stress that musculus peroneus generates also acts on astragalus.In addition, the longitudinal arch of foot top that astragalus is constituted,
The concussion from ground can be absorbed by arch.Its biomechanical movement is complicated, and vital work is played in human motion
With.And the local necrosis of astragalus often will cause serious consequence because it is undermining, if by local necrosis diffuse to away from
Other positions of bone then lead to structure considerable damage in bone and extremely difficult healing.Therefore, for the early treatment of the local necrosis of astragalus
It is extremely important.
Utility model content
The purpose of this utility model is to provide a kind of tools to have the astragalus local route repair body of porous structure to promote astragalus
The reconstruction of internal osteocyte healing and movement curved surface.
In order to achieve the above object, the utility model adopts the following technical scheme:
A kind of astragalus local route repair body with porous structure of the utility model, including astragalus local route repair body ontology, institute
The trochoid face paste of the curved surface and former astragalus of stating astragalus local route repair body ontology is closed, the side of the astragalus local route repair body ontology
Edge is equipped with and carries out the curved surface of astragalus local route repair body ontology biased twice to suture one obtained with hybrid junction surface methodology
Perforated grill structure, the perforated grill structure are octahedra porous structure；The astragalus local route repair body ontology is equipped with solid
Fixed nail.
Perforated grill structure is made of more porous structure bars arranged in a crossed manner as a preferred technical solution, porous knot
The pore size range of structure is 0.5mm-1mm, and the diameter range of porous structure bar is 0.2mm-0.3mm.
The fixing glue is made of rotary table and circular cone as a preferred technical solution, and the rotary table has certain inclination
Degree, the basal diameter up and down of rotary table is respectively 2.45mm and 0.88mm, frustum cone height 7mm；The basal diameter of circular cone is
0.88mm is highly 0.64mm.
The setting direction of the fixing glue is the normal direction side of astragalus local route repair body curved surface as a preferred technical solution,
To.
Astragalus local route repair body carries out machine-shaping using Ti6Al4V alloy powder as a preferred technical solution,.
The utility model has the following advantages compared with the existing technology and effect:
Medical image data of the utility model based on patient, in conjunction with reverse modeling design, realize local route repair curved surface with
Healthy curvature of curved surface best match, and local route repair body is prepared using selective laser smelting technology, reach quick repairing effect, contracts
The waiting time of short patient improves the response speed of prosthesis supply.
Detailed description of the invention
The design of Fig. 1 astragalus local route repair body and flow process chart；
Fig. 2 is the first schematic diagram of the astragalus local route repair body of the utility model；
Fig. 3 is the second schematic diagram of the astragalus local route repair body of the utility model.
Drawing reference numeral: 1, perforated grill structure；2, fixing glue；3, trochlea of talus articular surface local route repair curved surface.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the design of astragalus local route repair body and flow process chart.A kind of astragalus with porous structure is locally repaired
The personalized reverse engineer of complex and manufacturing method, which is characterized in that include the following steps: 1) based on patient CT data to astragalus
Position carries out model extraction, three-dimensional model reconfiguration, and exports stl formatted file；2) stl formatted file importing three-dimensional modeling is soft
Part Rhinoceros carries out reverse modeling design；3) local necrosis curved surface is extracted and is fitted, obtained and adjacent healthy song
The identical curved surface of face curvature；4) dummy design is carried out using fitting surface, determines fixing glue position, and utilize
Grasshopper plug-in unit completes porous structure modeling；5) personalized local astragalus reparation is prepared using selective laser smelting technology
Body；6) sanding and polishing is carried out to dummy upper surface curved surface, acid etching is carried out to lower porous structure.
Using the astragalus position of the dedicated CT instrument scanning patient of medicine, the medical image data of astragalus is collected, DICOM lattice are obtained
The data of formula.DICOM format file is imported inside Mimics software, according to the bone gray feature different from soft tissue,
Two dimension editor the inside carries out extra part to image and is quickly deleted, and pays attention to retaining astragalus position, the portion for deleting mistake
Image repair can be carried out by addition function by dividing, and generate three-dimensional data, edited, deleted more to three-dimensional modeling data
Soft tissue then switches back into two-dimentional editting function and is finely deleted and repaired, and regenerates threedimensional model, so recycles,
Until obtaining more complete astragalus model, stl formatted file is exported.
Stl formatted file is directed into Rhinocros software, the reverse reconstruction of curved surface is carried out.Utilize image intersection function
Can, it designs multiple planes and intersects with trochlea of talus articular surface, obtain intersection curve, it is using setting out, the series of acquisition is bent
Line carries out setting-out and generates fitting surface.Using curve reestablishing function, suitable UV point quantity is selected, UV is selected in this embodiment
10 points are selected, fitting order is 3 ranks, and curved surface is reconstructed.After obtaining reconstructed surface, in-edit function is opened, on curved surface
Control point be micro-adjusted so that curved surface is more bonded the trochoid face of former astragalus.After multiple micro-adjustment, obtain compared with
The fitting surface of good trochlea of talus articular surface.Diseased region is sketched the contours using curve model, and utilizes cutting method pair
Diseased region on fitting surface is split, and the corresponding trochlea of talus articular surface local route repair repaired for obtaining diseased region is bent
Face 3, as shown in Figure 3.Reparation curved surface is biased and thickens 3mm, to obtain astragalus local route repair entity.
Using bias capability, local route repair curved surface is biased twice, offset or dish is respectively 3mm and 9mm, uses hybrid junction
The curved surface biased twice is carried out the design space that suture obtains a perforated grill structure 1 by surface methodology, utilizes Rhinocros
The Grasshopper card module of software carries out the modeling of porous structure parameter listization.Design space is picked up with Brep battery, is used
Preset cell battery design cell cube type, design are octahedra porous structure, are designed using Uniform DS connection
Space, and definition unit body exports porous cable architecture having a size of 0.9mm, using Pipe battery, picks up porous cable architecture, and fixed
The diameter 0.2mm of adopted porous structure bar finally exports porous structure entity into Rhinocros window.
The fixing glue 2 of astragalus local route repair body is designed, which consists of two parts, and a part is with constant slope
Rotary table, a part be circular cone.The basal diameter up and down of rotary table is respectively 2.45mm and 0.88mm, is highly 7mm.The bottom of circular cone
Face diameter is 0.88mm, is highly 0.64mm.To repair entity, fixing glue, porous structure carries out group, delete back-up curve and
Then curve exports stl model.
The utility model astragalus local route repair body needs to carry out integrally formed, original by selective laser method of melt-molding
Material is Ti6Al4V alloy powder, and powder good sphericity, partial size is about 30-40 microns.Dummy curved surface is due to being fortune
Dynamic contact surface needs Precision Machining, therefore on curved surface plus cannot support, and the side thickeied in the entity of building is needed to be propped up
Support addition, placing part angle are 45 degree.Since astragalus prosthesis is there are perforated grill structure, structure is fine, is hundred micro-
Meter level structure needs to keep processing more accurate using the scanning of spiral fault and rear crisperding mode.It is melted and molded using selective laser
Equipment carries out machine-shaping to Ti6Al4V alloy powder.Its scanning mode is scanned using spiral fault, and laser scanning pitch is
0.08mm, processing thickness are 0.03mm, scanning speed 750mm/s, laser power 150W.
After selective laser is melted and molded, blasting treatment first is carried out to dummy surface, the alloyed powder adhered to quick removal
Then last and unmelted alloy powder carries out sanding and polishing processing to trochlea of talus curvature portion, until being polishing to mirror effect.
Acid etching is carried out to perforated grill to using mixed solution (HF:HCl=1:3), treatment temperature is room temperature, and etching time is
30s is finally rinsed completely using pure water, and is dried at a temperature of 80 DEG C.Finally carry out high-temperature high-voltage sterilizing sterilizing
Processing is applied to clinic.
Belong to the utility model guarantor using the astragalus prosthese of similar process design, manufacture in the utility model production method
The range of shield.Therefore, the utility model is not limited to specific embodiment disclosed herein, and drops into claim including all
The embodiment of protection scope.
Claims (5)
1. a kind of astragalus local route repair body with porous structure, which is characterized in that described including astragalus local route repair body ontology
The trochoid face paste of the curved surface of astragalus local route repair body ontology and former astragalus is closed, the edge of the astragalus local route repair body ontology
It is obtained more than one equipped with suture by the curved surface of astragalus local route repair body ontology biased twice with hybrid junction surface methodology
Grid of holes structure, the perforated grill structure are octahedra porous structure；The astragalus local route repair body ontology, which is equipped with, to be fixed
Nail.
2. the astragalus local route repair body according to claim 1 with porous structure, which is characterized in that perforated grill structure
It is made of more porous structure bars arranged in a crossed manner, the pore size range of porous structure is 0.5mm-1mm, porous structure bar
Diameter range be 0.2mm-0.3mm.
3. the astragalus local route repair body according to claim 1 with porous structure, which is characterized in that the fixing glue by
Rotary table and circular cone composition, the rotary table have certain gradient, the basal diameter up and down of rotary table be respectively 2.45mm and
0.88mm, frustum cone height 7mm；The basal diameter of circular cone is 0.88mm, is highly 0.64mm.
4. the astragalus local route repair body according to claim 3 with porous structure, which is characterized in that the fixing glue
Setting direction is the normal orientation of astragalus local route repair body curved surface.
5. the astragalus local route repair body according to claim 1 with porous structure, which is characterized in that astragalus local route repair
Body carries out machine-shaping using Ti6Al4V alloy powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721567753.6U CN208989260U (en) | 2017-11-22 | 2017-11-22 | Astragalus local route repair body with porous structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721567753.6U CN208989260U (en) | 2017-11-22 | 2017-11-22 | Astragalus local route repair body with porous structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208989260U true CN208989260U (en) | 2019-06-18 |
Family
ID=66795422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721567753.6U Active CN208989260U (en) | 2017-11-22 | 2017-11-22 | Astragalus local route repair body with porous structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN208989260U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107802378A (en) * | 2017-11-22 | 2018-03-16 | 华南理工大学 | Astragalus local route repair body and its design and production method with loose structure |
| WO2022040538A1 (en) * | 2020-08-20 | 2022-02-24 | Paragon Advanced Technologies, Inc. | Whole talus implant and method |
| WO2022040623A1 (en) * | 2020-08-21 | 2022-02-24 | Paragon Advanced Technologies, Inc. | Implant for focal talus defects and method |
-
2017
- 2017-11-22 CN CN201721567753.6U patent/CN208989260U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107802378A (en) * | 2017-11-22 | 2018-03-16 | 华南理工大学 | Astragalus local route repair body and its design and production method with loose structure |
| WO2022040538A1 (en) * | 2020-08-20 | 2022-02-24 | Paragon Advanced Technologies, Inc. | Whole talus implant and method |
| WO2022040623A1 (en) * | 2020-08-21 | 2022-02-24 | Paragon Advanced Technologies, Inc. | Implant for focal talus defects and method |
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