CN105380707B - Individual customized osteotomy orthopedic guide plate and manufacturing method thereof - Google Patents
Individual customized osteotomy orthopedic guide plate and manufacturing method thereof Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
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Abstract
The invention discloses an individualized customized osteotomy orthopedic guide plate, which is characterized by comprising the following components in parts by weight: the osteotomy orthopedic guide plate has a working surface for engaging the bone surface or for inserting a portion of the bone in contact therewith into the guide plate, an outer surface defined by the thickness of the bone in contact with the target bone at each location, and sides of the guide plate controlled by the curvature of the apophyseal marking, with each side aligned with the apophyseal marking; firstly, modeling a target skeleton by a reverse engineering technology to obtain a digital model of the skeleton, and measuring the position to be subjected to osteotomy correction, the osteotomy angle and the plane of the angle; then, the characteristics of each surface, the osteotomy groove, the through hole, the fracture hole and the fillet of the guide plate are designed in sequence according to the osteotomy parameters, and finally 3d printing is carried out. The invention has the advantages of high precision, simplicity, practicability, rapid molding model making, wide application range and the like.
Description
Technical field
Computer Aided Modeling field is the present invention relates to the use of, more particularly to the individuation customization orthopedic guide plate numeral of osteotomy is built
Mould and its quick molding method.
Background technology
The 3D printing technique industrial revolution at present is in the ascendant, and 3D printing osteotomy guide plate is still within testing in the application of clinic
Room stage, the clinical practice main cause for restricting the technology have three：1. precision, the clinical requirement to osteotomy precision are higher, if
Deviation is larger, may result in osteotomy failure, and 2. common designs are unreasonable, and few the problem of consideration, structure is excessively simple, clinical
Doctor can not correctly, promptly install, and cause there is still a need for perspective determines plane, do not give full play of preoperative plan and
The advantage of 3D printing, so be necessary to design the osteotomy guide plate of more convenient clinical practice.
The content of the invention
High it is an object of the invention to provide a kind of precision for problems of the prior art, reasonable in design
The orthopedic guide plate of bodyization customization osteotomy and its quick molding method.
To achieve the above objectives, the present invention adopts the following technical scheme that.
A kind of individuation customizes the orthopedic guide plate of osteotomy, and its feature includes：Its working face of the orthopedic guide plate of osteotomy pastes with bone surface
Close, or in the embedded guide plate of the part that can be in contact with it bone, its outer surface is by contacting each position institute in surface with targeted bone
The thickness needed determines that each side of guide plate is controlled by the camber line of apophysis mark, utilize each side and apophysis mark pair
Together, osteotomy guide plate placement location mistake is prevented；Guide plate center section is provided with some osteotomy grooves, and osteotomy groove is available for goose saw or scroll saw to lead to
Cross, the two side ends of osteotomy are provided with some through holes being be arranged in parallel with Osteotomy, and these through-bore axis are generally aligned in the same plane or not
It is coplanar, the plane residing for correction angle plane and determine, number is determined by the number of osteotomy groove, each osteotomy groove corresponding one
Individual or multiple through holes, through hole is used to insert the supporting Internal fixation pin of the design or thick steel needle or cutting needle or screw needle, for facing
When fix osteotomy guide plate and bone, preventing the displacement of bone piece after osteotomy influences follow-up osteotomy, and the Internal fixation pin pierced is after osteotomy
Can using come carry out bone stump to line registration, realize accurate monoplane or multilevel angle correction, prevent because reset
Operative failure caused by inaccuracy causes rotation, angulation displacement or angle correction inaccurate etc., and can be utilized after the completion of osteotomy
Internal fixation pin is fixed temporarily, more accurately to be aligned, can use the supporting registering fixation of universal or Custom Prosthesis
Device；Weak site is designed in the block one side that osteotomy groove is surrounded, and completing retrotorsion block destruction guide plate for osteotomy is easy to lead
The removal of plate is without taking out Internal fixation pin；In through hole according to design foramen lacerum is needed, for rupturing guide plate, it is easy to guide plate
Remove without taking out Internal fixation pin.Guide plate also has Fillet Feature, prevents sharp edges injury tissue.Removed after the completion of osteotomy
After guide plate, fixed temporarily using Internal fixation pin, and internal fixation plate is installed, bone is fixed inside/outside fixed rack structure；The osteotomy
Orthopedic guide plate is to establish mathematical model by reverse-engineering modeling technique and be designed rear 3D printing to obtain.
Its main body of supporting Custom Prosthesis registration fixator is bar or plate, and its middle position is provided with through hole, the arrangement foundation of through hole
Determined according to position of the Internal fixation pin that osteotomy guide plate is squeezed into after osteotomy standard reset, all through-bore axis are in same flat
Face and parallel, larger for bone surface amplitude, the one side of bar can be designed to match with bone face by osteotomy guide plate design method
Or the curved surface of approximate match, it is preferably pressed close to bone face does not influence subsequent operation.The fixator is used for the fixation after osteotomy
Pin is fixed, and bone piece, which is pulled, using fixed pin after fixed can be such that bone piece is on correct position, and it is obtained necessarily
Stability is beneficial to operation below.Its processing mode of Custom Prosthesis registration fixator is 3D printing.
Its supporting universal registering fixator is characterised by：It is made up of guide rail, sliding block, fixture block, screw, and guide rail is by two
Identical parallel bar composition, its sliding block have groove to be mountable on guide rail, and there is screw centre, has screw among fixture block, and there is card its bottom surface
Groove can block Internal fixation pin, fix fixture block, sliding block and guide rail by the pressurization of screw, make Internal fixation pin using guide rail
It is fixed on same plane, so as to get purpose is acted on up to Custom Prosthesis identical, due to sliding block adjustable position, so can realize
Bone after osteotomy is pressurizeed.Due to fixation, the fixator can be used as final external fixing rack and use.
A kind of preparation method of the individuation customization orthopedic guide plate of osteotomy, is entered by reverse Engineering Technology to target bone first
Row modeling obtains the mathematical model of bone, and measures and be intended to the orthopedic position of osteotomy, osteotomy angle, angle place plane；Then,
Each face of guide plate, osteotomy groove, through hole, foramen lacerum, Fillet Feature are designed successively according to these osteotomy parameters, finally carry out 3d
Printing；Specifically include following steps；First step data acquisition, image split point cloud or the model data for obtaining target, and are scheming
As confirming the contour line of mask or model and the difference of target bone image outline in segmentation software repeatedly, confirm that its difference is less than
1 pixel, output file, as picture quality is too poor, image segmentation operations are cumbersome, then generation exact point cloud or model are defeated as far as possible
Go out；Second step reverse-engineering processing, using the reverse or positive reverse engineering software with variance analysis function to above-mentioned data lattice
The file of formula carries out the various processing such as denoising, fairing, filling-up hole, excludes obvious bulk noise region and error profile, controls
Forming model processed is with the maximum deviation of point cloud or model in 0.5mm or below 0.1mm, generation CAD model, into the 3rd or the 4th
Step；As picture quality is too poor, output file is unsatisfied, then close normal model is generated in the step and enters the 3rd step.The
The verification checking of three step models and image, the model of second step generation, can also be fed back to image segmentation software by its model file,
The difference of contrast model profile and target anatomical structure image, and by adjusting contour line, increase deletion mask pixel etc.
Reason, is modified to mask or model, exports mask point cloud or model file, and continues reverse-engineering processing, and the step can
It is repeated, it is ensured that final model quality, this method is too poor especially suitable for picture quality, the too many situation of artifact；The
Four step model qualities are classified and mark, its model construction quality of the CAD model model ultimately generated can give classification, and to removal
The processing such as large stretch of noise region place that is more or having a question is labeled；The design of 5th step osteotomy guide plate, the output of the 4th step
Model import in CAD or positive reverse engineering softwares, the design of osteotomy guide plate is carried out by flow, the model of design can be output to
Image segmentation software, understand the matching degree of its profile and bone image profile, if desired for modification, can further change.6th
Step, 3D printing, the model of design enter 3D printing auxiliary software with full accuracy output, establish its putting position in software,
Preferential to ensure bone-contact face, osteotomy groove, the precision of through hole, the model of design is as one piece printing shaping.
The main advantage that rapid shaping model is made using the present invention is, it is contemplated that various in osteotomy orthopaedy are asked
Topic, ensure that precision, it is not necessary to x line perspectives are carried out, it is simple and practical, and it is applied widely, it can be applied to each bone of whole body.In a word, originally
Scheme of the invention, promote to the wider clinical practice of 3D printing technique in order to possible；And model crosscheck and deviation point
Analysis, model quality classification, then can improve model construction precision, all links for being likely to result in loss in detail are included into the palm
Control, classification, mark can more help the precision of user's model more clearly used and may need the place that should be noted in art,
Make it for the truth of individual have more accurately estimate, understand, be easy to quality analysis to compare, there are laws to abide by, prevents with secondary
Substitute the bad for the good.
Brief description of the drawings
Fig. 1 is the orthopedic guide plate structure schematic diagram of osteotomy of the present invention；
Fig. 2 is the orthopedic guide plate of osteotomy and bone face bonding structure schematic diagram；
Fig. 3 is the orthopedic guide plate of mosaic osteotomy and target bone data model schematic diagram；
Fig. 4 is Custom Prosthesis registration fixator；
Fig. 5 is universal registering fixator.
Description of reference numerals
1st, bone contact surface；2nd, osteotomy groove and weak spot；3rd, the side alignd with bone surface mark；4th, through hole；5th, rupture
Hole；6th, Fillet Feature；7th, fixator through hole；8th, the bone contact surface of Custom Prosthesis registration fixator；9th, guide rail；10th, fixture block；11st, it is sliding
Block；12nd, screw screw；13rd, Internal fixation pin neck 14, guide plate outer surface
Embodiment
The essence of the present invention is more fully understood for ease of those of ordinary skill in the art, below to the specific implementation of the present invention
Mode is described in detail.
As Figure 1-5, the individuation customization orthopedic guide plate of osteotomy of the present invention, its bone contact working face 1 are bonded with bone surface,
Or in the embedded guide plate of a part that can be in contact with it bone (Fig. 3), its outer surface 14 is by contacting each position in surface with targeted bone
Required thickness is put to determine, each side 3 of guide plate is controlled by the camber line of apophysis mark, utilizes each side and apophysis mark
Will is alignd, and prevents osteotomy guide plate placement location mistake；Guide plate center section is provided with some osteotomy grooves 2, osteotomy groove 2 be available for goose saw or
Scroll saw is by the way that the two side ends of osteotomy are provided with some through holes 4 being be arranged in parallel with Osteotomy, and these through-bore axis are positioned at same flat
Face or Different Plane, the plane residing for correction angle plane and determine, number is determined by the number of osteotomy groove, each osteotomy groove
Corresponding one or more through holes, through hole are used to insert the supporting Internal fixation pin of the design or thick steel needle or cutting needle or screw needle,
Osteotomy guide plate and bone are fixed for interim, prevents the follow-up osteotomy of displacement influence of bone piece after osteotomy, and the Internal fixation pin pierced exists
After osteotomy can using come carry out bone stump to line registration, realize accurate monoplane or multilevel angle correction, prevent
The operative failure caused by resetting inaccuracy and causing rotation, angulation displacement or angle correction inaccurate etc., and can be completed in osteotomy
Fixed using Internal fixation pin, more accurately to be aligned, can be matched somebody with somebody using supporting universal or Custom Prosthesis temporarily afterwards
Quasi- fixator, such as Fig. 4,5；Weak site is designed in the block one side that osteotomy groove 2 is surrounded, for the osteotomy completion retrotorsion block
Destroy guide plate and be easy to the removal of guide plate without taking out Internal fixation pin；In through hole according to design foramen lacerum 5 is needed, for rupturing
Guide plate, it is easy to the removal of guide plate without taking out Internal fixation pin.Guide plate also has Fillet Feature 6, prevents sharp edges damage group
Knit.After removing guide plate after the completion of osteotomy, fixed temporarily using Internal fixation pin, and internal fixation plate, inside/outside fixed rack structure pair are installed
Bone is fixed；The orthopedic guide plate of the osteotomy is to establish mathematical model by reverse-engineering modeling technique and be designed rear 3D printing to obtain
.
Its main body of supporting Custom Prosthesis registration fixator as shown in Figure 4 is bar or plate, and its middle position is provided with through hole 7, through hole
Arrangement determined according to according to position of the Internal fixation pin that osteotomy guide plate is squeezed into after osteotomy standard reset, all through-bore axis
In same plane and parallel, larger for bone surface amplitude, the one side 8 of bar can be designed to by osteotomy guide plate design method
Matched with bone face or the curved surface of approximate match, it is preferably pressed close to bone face does not influence subsequent operation.The fixator is used to cut
Fixed pin after bone is fixed, and bone piece, which is pulled, using fixed pin after fixed can be such that bone piece is on correct position, and make it
Certain stability is obtained beneficial to operation below.Its processing mode of Custom Prosthesis registration fixator is 3D printing.
Its as shown in Figure 5 supporting universal registering fixator is made up of guide rail 9, fixture block 10, sliding block 11, screw, guide rail 9 by
Two identical parallel bar compositions, its sliding block 11 have groove to be mountable on guide rail, and there is screw centre, has screw among fixture block 10, its
Bottom surface has neck to block Internal fixation pin, fixes fixture block, sliding block and guide rail by the pressurization of screw, is made using guide rail
Internal fixation pin is fixed on same plane, so as to get purpose is acted on up to Custom Prosthesis identical, due to sliding block adjustable position, so
It can realize and the bone after osteotomy is pressurizeed.Due to fixation, the fixator can be used as final external fixing rack and use.
A kind of individuation customizes the orthopedic guide plate preparation method of osteotomy, comprises the following steps；First step data acquisition, image point
Cut：Acquisition image, and output image file or point cloud file are scanned to living object bone using equipment such as CT, MR；
Image file imported into image segmentation software such as MIMICS, 3DDoctor etc., and the set of pixels for isolating target anatomical structure (is covered
Plate) or profile, because bone set of pixels is often easier to extract, the outer contour of bone image is often more visible, so covering
The plate stage, you can the difference of verification mask contour line and image outline, mask contour line must be made maximum with bone image profile
Error is less than 1 pixel, to the mask of separation in image segmentation software, output point cloud file or can be in reverse engineering software
The file of a cloud is presented as, or does not do to mask computation model but fairing noise abatement, exports the file of threedimensional model, and for work(
Image segmentation software that can be more powerful, after can calculating threedimensional model, rechecks the deviation of model silhouette line and image, passes through modification
The mode of contour line, correction model make its contour line be less than 1 pixel output model again with bone image profile worst error.When
So, if picture quality is very poor, artifact is a lot, and image segmentation is cumbersome, can also export to second step.
The processing of second step reverse-engineering, using the reverse or positive reverse engineering software with variance analysis function such as
GEOMAGIC, IMAGEWARE, 3-matic etc., the various places such as denoising, fairing, filling-up hole are carried out to the file of above-mentioned data format
Reason；The mask point cloud or model exported such as the first step is more satisfied, understood using variance analysis function the model that inversely generates with
The deviation of origin cloud or model, according to variance analysis modified result model, the true journey of smooth degree, anatomical structure in model
After degree, deviation reach pre-provisioning request, generate CAD surface models or physical model is output to the 3rd or the 4th step；Such as the illiteracy of output
Plate is more coarse, and image segmentation software processing is cumbersome, by removing unnecessary tissue by hand in reverse engineering software, leads to
The various processing such as denoising, fairing, filling-up hole are crossed, generation is closer to the model of object construction.
The verification checking of 3rd step model and image, the model of second step generation, can also be fed back to figure by its model file
As segmentation software, the difference of contrast model profile and target anatomical structure image, and by adjusting contour line, increase deletion mask
The processing such as pixel, is modified to mask or model, exports mask point cloud or model file, and continue at reverse-engineering
Reason, the step can be repeated, it is ensured that final model quality, this method is too poor especially suitable for picture quality, and artifact is too many
Situation.
4th step model quality is classified and mark, its model construction quality of the CAD model model ultimately generated can give classification,
And large stretch of noise region to removal etc. handles place that is more or having a question and is labeled；
The model of the design of 5th step osteotomy guide plate, second step or the output of the 3rd step imports CAD software or positive reverse-engineering
In software, such as UG, solidwork, pro-e, 3-matic：One) anatomic measurement, reference literature pair are carried out according to clinical requirement
The definition of bone anterioposterior and lateral film, the sagittal plane of target bone mathematical model is determined, horizontal plane, coronal-plane, reference literature is to bone
The definition of segmentation gives the segmentation of bone mathematical model, definition of the reference literature to various anatomical angulations, is established on mathematical model
Various axis, and the size of anatomical angulation is measured, reference literature defines to normal anatomical angulation, it is determined that the angle corrected is needed,
Determine position of the osteotomy on mathematical model, plane residing for angle, if angle be it is multiple in Different Plane ratio if desired for correction
Coronal-plane is also required to correct sagittal plane or horizontal plane angulation, and the actual angulation in space can be obtained by combined projection, this
Projection of the angle on coronal-plane is the angle that coronal-plane needs to correct, and the projection in sagittal plane is that sagittal plane needs to correct
Angle, projection in the horizontal plane are the correction angles on horizontal plane；Two) scope of guide plate, generation, are determined according to Osteotomy
Entity；Three) three-dimensional Boolean calculation or biasing surface generation guide plate with bone contact surface 1, recommend inserted design；Four) connect according to bone
The characteristics of contacting surface, determined by cutting guide plate bone contact surface to side 14, five) according to positive side position beyond bone surface contact surface
More obvious body surface symbol on piece, with the contour line of body surface symbol, cutting guide plate generation guide plate aligns with anatomic landmark
Each side 3, six) foundation Osteotomy generation osteotomy groove 2, seven) design Kirschner wire through hole 4, eight) design foramen lacerum 5 and cut
Bone groove weakness site；Nine) Fillet Feature 6 is designed.Ten) Bones morphology resetted after osteotomy is simulated on computers and uses phase Tongfang
Method designs supporting Custom Prosthesis registration fixator.
6th step, 3D printing, the model of design enter 3D printing auxiliary software with full accuracy output, aided in 3D printing
Its putting position is established in software, preferential to ensure bone-contact face, osteotomy groove, the precision of through hole, the model of design is as overall
Printing shaping.The mode that 3D printing recommends SLA equally accurate high deformations small ensures that design keeps the shape.
Present invention can apply to each bone of whole body, changes in the external form for not departing from the design thought and belongs to present invention protection model
Enclose, the design feature of this patent can be combined according to needs, adjust.
Printed material, printing Unit-type sclection, printing precision change should be within the scope of the present invention.Universal registration is solid
Determining device changes in material should be within the scope of the present invention, and the structure such as addition spring is improved between universal sliding block and fixture block
The scope of the present invention should be belonged to.Custom Prosthesis registration fixator can also make certain model to be made as universal registering fixator
With should be within the scope of the present invention.
The present invention uses image segmentation software, reverse or positive reverse engineering software, CAD software, quick forming fabri-cation software
Some softwares in (3D printing software) four class software, belong to the scope of the present invention using the change of software.
According to the thought of the present invention, this hair should be belonged to by further establishing the software systems of each step exploitation of optimized algorithm integration
Bright protection domain.
Claims (5)
1. a kind of individuation customizes the orthopedic guide plate of osteotomy, it is characterised in that its working face of the orthopedic guide plate of its guide plate osteotomy and bone table
Face is bonded, or in the embedded guide plate of the part that can be in contact with it bone, its outer surface is by contacting each position in surface with targeted bone
Required thickness is put to determine, each side of guide plate is controlled by the camber line of apophysis mark, utilizes each side and apophysis mark
Will is alignd, and prevents osteotomy guide plate placement location mistake；Guide plate center section is provided with some osteotomy grooves, and osteotomy groove is available for goose saw or line
Saw passes through, and the two side ends of osteotomy are provided with some through holes being be arranged in parallel with Osteotomy, and these through-bore axis are generally aligned in the same plane
Or Different Plane, the plane residing for correction angle plane and determine, number is determined by the number of osteotomy groove, each osteotomy groove pair
One or more through holes are answered, through hole is used to insert the supporting Internal fixation pin of the design or thick steel needle or cutting needle or screw needle, used
Osteotomy guide plate and bone are fixed in interim, prevents the follow-up osteotomy of displacement influence of bone piece after osteotomy, and the Internal fixation pin pierced is being cut
After bone can using come carry out bone stump to line registration, realize accurate monoplane or multilevel angle correction, prevent because
Resetting inaccuracy causes rotation, angulation displacement or angle correction inaccurately caused operative failure, and can be sharp after the completion of osteotomy
Fixed temporarily with Internal fixation pin, more accurately to be aligned, use supporting universal registering fixator or Custom Prosthesis
Registering fixator；Weak site is designed in the block one side that osteotomy groove is surrounded, and completes retrotorsion block destruction for osteotomy and leads
Plate is easy to the removal of guide plate without taking out Internal fixation pin；In through hole according to design foramen lacerum is needed, for rupturing guide plate, just
In guide plate removal without take out Internal fixation pin；The guide plate also has Fillet Feature, prevents sharp edges injury tissue；Osteotomy
After the completion of remove guide plate after, fixed temporarily using Internal fixation pin, and internal fixation plate is installed, inside and outside fixed rack structure is consolidated to bone
It is fixed；The orthopedic guide plate of the osteotomy is to establish mathematical model by reverse-engineering modeling technique and be designed rear 3D printing to obtain.
2. individuation according to claim 1 customizes the orthopedic guide plate of osteotomy, it is characterised in that：Its supporting Custom Prosthesis registration is solid
It is bar or plate to determine device main body, and its middle position is provided with through hole, and the arrangement of through hole is according to the Internal fixation pin squeezed into according to osteotomy guide plate
Position after osteotomy standard reset determines, all through-bore axis are in same plane and parallel, for bone surface amplitude
Larger, the one side of bar can be designed to match with bone face by osteotomy guide plate design method or the curved surface of approximate match, makes its more preferable
Bone face is pressed close on ground does not influence subsequent operation；The fixator is used to fix the fixed pin after osteotomy, and fixed pin pair is utilized after fixed
Bone piece drawing can be such that bone piece is on correct position, and it is obtained certain stability beneficial to operation below；Customization
Its processing mode of type registration fixator is 3D printing.
3. individuation according to claim 1 customizes the orthopedic guide plate of osteotomy, it is characterised in that：Its supporting universal registration is solid
Determine device to be made up of guide rail, sliding block, fixture block, screw, guide rail is made up of two identical parallel bars, and its sliding block has groove to be mountable to guide rail
On, there is screw centre, has screw among fixture block, and its bottom surface has neck to block Internal fixation pin, passes through the pressurization of screw
Fixture block, sliding block and guide rail are fixed, Internal fixation pin is fixed on same plane using guide rail, so as to get up to Custom Prosthesis identical
Purpose is acted on, due to sliding block adjustable position, the bone after osteotomy is pressurizeed so can realize；, should due to fixation
Fixator can be used as final external fixing rack and use.
A kind of 4. preparation method of the individuation customization orthopedic guide plate of osteotomy, it is characterised in that its preparation method flow：Pass through first
Reverse Engineering Technology is modeled to obtain the mathematical model of bone to target bone, and measures and be intended to the orthopedic position of osteotomy, cuts
Plane where bone angle, angle；Then, according to these osteotomy parameters design successively each face of guide plate, osteotomy groove, through hole,
Foramen lacerum, Fillet Feature, finally carry out 3d printings；Specifically include following steps；First step data acquisition, image are split to obtain mesh
Target point cloud or model data, and the contour line and target bone image of mask or model are confirmed in image segmentation software repeatedly
The difference of profile, confirm that its difference is less than 1 pixel output file, picture quality is too poor, image segmentation operations are cumbersome, then to the greatest extent
Amount generation exact point cloud or model output；The processing of second step reverse-engineering, utilizes the reverse or forward and reverse with variance analysis function
Denoising, fairing, the various processing of filling-up hole are carried out to the file of above-mentioned data format to engineering software, exclude obvious big block noise
Region and error profile, control forming model is with putting the maximum deviation of cloud or model in 0.5mm or below 0.1mm, generation CAD
Model, into the 3rd or the 4th step；As picture quality is too poor, output file is unsatisfied, then generated in the step it is close just
Norm type enters the 3rd step；The verification checking of 3rd step model and image, the model of second step generation can also be by its model file
The difference of image segmentation software, contrast model profile and target anatomical structure image is fed back to, and by adjusting contour line, increase
The processing of mask pixel is deleted, mask or model are modified, exports mask point cloud or model file, and is continued reverse
Project treatment, the step can be repeated, it is ensured that final model quality, this method is too poor especially suitable for picture quality, pseudo-
The too many situation of shadow；4th step model quality is classified and mark, its model construction quality of the CAD model model ultimately generated can be given
Classification, and be labeled to handling place that is more or having a question；The design of 5th step osteotomy guide plate, exported by the 4th step
Model is imported in CAD or positive reverse engineering softwares, and the design of osteotomy guide plate is carried out by flow, and the model of design is output to image point
Software is cut, contrasts the matching degree of its profile and bone image profile, if desired for modification, can further be changed；6th step 3D is beaten
Print, the model of design enters 3D printing auxiliary software with full accuracy output, establishes its putting position in software, preferential to ensure
Bone-contact face, osteotomy groove, the precision of through hole, the model of design is as one piece printing shaping.
5. the preparation method of the individuation customization orthopedic guide plate of osteotomy according to claim 4, it is characterised in that：The bone
The measuring method that mathematical model establishes content uses：Definition of the reference literature to bone anterioposterior and lateral film, determine target bone numeral
The sagittal plane of model, horizontal plane, coronal-plane, definition of the reference literature to bone fragments give the segmentation of bone mathematical model, reference
Definition of the document to various anatomical angulations, establishes various axis on mathematical model, and measures the size of anatomical angulation, with reference to text
Offer and normal anatomical angulation is defined, it is determined that need the angle corrected, determine position of the osteotomy on mathematical model, put down residing for angle
Face, if angle be it is multiple be also required to correct sagittal plane or horizontal plane angulation if desired for correction coronal-plane in Different Plane ratio, can
To obtain the actual angulation in space by combined projection, projection of this angle on coronal-plane is that coronal-plane needs to correct
Angle, the projection in sagittal plane are that sagittal plane needs the angle corrected, and projection in the horizontal plane is the correction on horizontal plane
Angle.
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| CN201510708362.0A CN105380707B (en) | 2015-10-24 | 2015-10-24 | Individual customized osteotomy orthopedic guide plate and manufacturing method thereof |
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| CN201510708362.0A CN105380707B (en) | 2015-10-24 | 2015-10-24 | Individual customized osteotomy orthopedic guide plate and manufacturing method thereof |
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| CN107361815B (en) * | 2017-08-02 | 2020-09-11 | 张永飞 | Bone cutting orthopedic guide plate and manufacturing method thereof |
| CN110559066A (en) * | 2019-10-07 | 2019-12-13 | 丁浩男 | Fixing support device with auxiliary fracture reduction function |
| CN114129259A (en) * | 2021-11-05 | 2022-03-04 | 刘逸夫 | Orthopedics orthopedic new surgery based on digital medicine and 3D printing technology |
| CN114098969B (en) * | 2022-01-27 | 2022-05-06 | 北京威高智慧科技有限公司 | Osteotomy diagnostic system, osteotomy diagnostic method, device and medium |
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| CN103584930B (en) * | 2013-10-23 | 2016-01-06 | 华南理工大学 | A kind of personalized complete knee joint implanting prosthetic reversal design and manufacture method |
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