CN104783884B - Dissect locking steel plate and its method for designing in a kind of preceding road of articulatio sacroiliaca - Google Patents
Dissect locking steel plate and its method for designing in a kind of preceding road of articulatio sacroiliaca Download PDFInfo
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- CN104783884B CN104783884B CN201510226799.0A CN201510226799A CN104783884B CN 104783884 B CN104783884 B CN 104783884B CN 201510226799 A CN201510226799 A CN 201510226799A CN 104783884 B CN104783884 B CN 104783884B
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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
- A61B17/68—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
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
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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
- A61B17/68—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
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
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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
- A61B2017/564—Methods for bone or joint treatment
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Abstract
The invention provides the method for designing that locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca, including：Using reverse Engineering Technology build posterior ring pelvic before surface three dimension anatomic form the step of；Steel plate bottom surface is determined according to surface three dimension anatomic form before the posterior ring pelvic, and according to the step of the acquisition steel plate of steel plate bottom surface；Nail is put in simulation on pelvis Three-dimension Reconstruction Model, and according to the step of putting nail result and builds the preceding road dissection locking steel plate of nail formation articulatio sacroiliaca on the steel plate；The step of there is the preceding road of the articulatio sacroiliaca to dissect locking steel plate for output.The present invention also provides the preceding road of a kind of articulatio sacroiliaca obtained by above-mentioned method for designing and dissects locking steel plate.The steel plate has and is not required to moulding, can reduce and surrounding soft tissue is peeled off, make Interal fixation more firmly, the advantages of avoid damage to that peripheral nerve, operating time are short, be not susceptible to Unstable internal fixation.
Description
Technical field
The present invention relates to medical instruments field, locking steel plate and its design side are dissected in more particularly to a kind of preceding road of articulatio sacroiliaca
Method.
Background technology
At present, the device of medical applications Zhong Qian roads fixation articulatio sacroiliaca is mainly：Reconstruction plate and narrow compression steel plate, it is preceding
Person is easy to pre-bending moulding, but fixing intensity is poor, may occur in which fixation failure；The latter is difficult moulding, and fixing intensity is slightly better than the former,
Steel plate pre-bending is difficult.Both screw of the road fixing device on rumpbone was two pieces forward, and can not be locked with steel plate.
The content of the invention
It is contemplated that at least solving one of problem present in background technology.
One of the object of the invention is to provide a kind of preceding road of moulding articulatio sacroiliaca secondary to steel plate that is not required to dissect locking steel
The method for designing of plate.
In order to achieve the above object, the present invention provides the method for designing that locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca, bag
Include：
Using reverse Engineering Technology build posterior ring pelvic before surface three dimension anatomic form the step of；According to the posterior ring pelvic
Preceding surface three dimension anatomic form determines steel plate bottom surface, and according to the step of the acquisition steel plate of steel plate bottom surface；Before the posterior ring pelvic
Nail is put in simulation on surface three dimension anatomic form, and the preceding road of nail formation articulatio sacroiliaca is built on the steel plate according to nail result is put
The step of dissecting locking steel plate；The step of there is the preceding road of the articulatio sacroiliaca to dissect locking steel plate for output.
Further, include the step of surface three dimension anatomic form using before reverse Engineering Technology structure posterior ring pelvic：
The step of pelvis data being obtained using some normal pelvis of CT scan；Trigonometric ratio weight is carried out according to the pelvis data
The step of building surface three dimension anatomic form before posterior ring pelvic.
Further, the pelvis data include measurement articulatio sacroiliaca peak along articulatio sacroiliaca line to the true bone of articulatio sacroiliaca
The length value of basin marginal point.
Further, the step that trigonometric ratio rebuilds surface three dimension anatomic form before posterior ring pelvic is carried out according to the pelvis data
Suddenly include：
The length value is divided into three groups by percentile from small to large, the median of length value is used as measurement described in every group
Posterior ring pelvic is small, in, big foundation；By it is described it is small, in, ring carries out trigonometric ratio reconstruction to the pelvis data after pelvis major；Build
Vertical coordinate system, takes crista iliaca peak as origin, is X-axis along human body horizontal direction, and human body long axis direction is Y-axis, before and after human body
Direction is Z axis, sets up X-Y-Z coordinate systems；Standard flat is set up：Using crista iliaca peak as central point, X/Y plane set up it is long,
The virtual plane of a width of 30cm, the length value of setting 1/20 sets up cutting as spacing units in X-axis, Y-axis both direction
Plane, projection line joining of the cutting planes on the preceding surface of posterior ring pelvic is the measurement point as the preceding surface of posterior ring pelvic；
According to the coordinate position of the measurement point, multiplied by with spacing units value, we can obtain each measurement point X, Y value, measure each
Measurement point to standard flat vertical range, as the Z values of measurement point；X, Y according to each measurement point, Z coordinate value enter
Row trigonometric ratio rebuilds surface three dimension anatomic form before posterior ring pelvic.
Further, it is above-mentioned that steel plate bottom surface is determined according to surface three dimension anatomic form before the posterior ring pelvic, and according to steel
The step of plate bottom surface obtains steel plate includes：
Take on the preceding surface of surface three dimension anatomic form before the posterior ring pelvic at 4 points as steel plate bottom surface cut point, wherein
First point is inner side point of the steel plate near human body axis, and away from articulatio sacroiliaca line 2.5cm, first point is along X-axis to institute
State steel plate outer rim apart from 50mm, the 4th point is points outside, first point and the 4th point on the steel plate
Line updip is in 30 ° of angles with X-axis, and second point is inner side point under steel plate, and away from articulatio sacroiliaca line 1.5cm, the 3rd point is steel
It is in 15 ° of angles that the line of points outside under plate, second point and the 3rd point has a down dip with X-axis；According to described 4 points described
The bottom surface of the steel plate is determined before posterior ring pelvic on the preceding surface of surface three dimension anatomic form；Bottom surface according to the steel plate determines institute
State the thickness of steel plate.
Further, nail is put in simulation on surface three dimension anatomic form before the posterior ring pelvic, and exists according to nail result is put
Nail is built on the steel plate and is formed the step of locking steel plate is dissected on the preceding road of articulatio sacroiliaca includes：The steel plate is attached to the pelvis
Afterwards before ring on 4 points described in the preceding surface of surface three dimension anatomic form；Simulation screw inserts table before the steel plate and the posterior ring pelvic
Face 3 D anatomical form, with human coronary face and sagittal plane as reference planes, adjusts flare in the screw, avoids articulatio sacroiliaca
With inner side sacrum hole；After adjusting the screw angle, screw two-end-point X, Y, Z value is recorded, two-end-point coordinate value subtracts each other
To screw vector (X1、Y1、Z1) value, wherein α=arctan (X1/Z1) it is the inner and outer inclination angle angle value of screw, β=arctan (Y1/
Z1) it is respectively the forward and backward inclination angle angle value of screw；According to the forward and backward inclination angle angle value of the screw and inside and outside inclination angle angle value and the spiral shell
Nail position builds nail on the steel plate and forms the preceding road dissection locking steel plate of articulatio sacroiliaca.
The present invention also provides a kind of preceding road of articulatio sacroiliaca and dissects locking steel plate, and the steel plate is obtained according to above-mentioned method for designing
Arrive.
Further, human body crista iliaca peak being taken as origin, being X-axis along human body horizontal direction, human body long axis direction is Y
Axle, human body fore-and-aft direction is Z axis, in the X-Y-Z coordinate systems, four point conducts is taken on the preceding surface of ring after the human pelvis
Steel plate bottom surface cut point, wherein first point is inner side point of the steel plate near human body axis, away from articulatio sacroiliaca line 2.5cm, institute
State first point along X-axis to the steel plate outer rim apart from 50mm, the 4th point is points outside, described first on the steel plate
Point is in 30 ° of angles with the line updip and X-axis of the 4th point, and second point is inner side point under steel plate, away from articulatio sacroiliaca line
1.5cm, the 3rd point is points outside under steel plate, and second point has a down dip with X-axis in 15 ° of angles with the line of the 3rd point；
Determine the bottom surface of the steel plate on the preceding surface of ring after the human pelvis according to described 4 points；The thickness of the steel plate is by being close to
2mm on the inside of human body axis is gradient to the 2.5mm of the other end.
Further, the steel plate includes the sacral region for fixing human articulatio sacroiliaca and ilium portion, the sacral region
Three nail are provided with, the ilium portion is provided with some nail.
Further, the material of the steel plate is medical titanium alloy or stainless steel.
Locking steel plate is dissected the beneficial effects of the present invention are there is provided a kind of preceding road of articulatio sacroiliaca, using the steel plate in the past
Dislocation and the fracture of articulatio sacroiliaca are fixed by side.The steel plate have meet articulatio sacroiliaca forward surface anatomic form, with existing skill
Art is three pieces compared to screw number of the steel plate on rumpbone, and is locking, i.e., form an entirety with steel plate, can substantially be increased
Interior fixing intensity, it is to avoid stress concentration, prevents fixation failure.The steel plate be not required to again it is moulding, can reduce to surrounding soft tissue shell
From the Interal fixation is firm, it is short to avoid damage to peripheral nerve, operating time and is not susceptible to Unstable internal fixation.The present invention is also
The method for designing of locking steel plate is dissected there is provided a kind of preceding road of articulatio sacroiliaca.
Brief description of the drawings
Fig. 1 show the flow chart that locking steel plate method for designing is dissected on a kind of preceding road of articulatio sacroiliaca of the invention.
Fig. 2 show the flow chart that application reverse Engineering Technology in Fig. 1 builds surface three dimension anatomic form before posterior ring pelvic.
Fig. 3 show the stereogram that the embodiment of locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca of the invention.
Specific embodiment
The present invention is described in detail below in conjunction with specific embodiment.It should be noted that the skill described in following embodiments
The combination of art feature or technical characteristic be not construed as it is isolated, they can be mutually combined so as to reach preferably
Technique effect.
Fig. 1 show the flow chart that locking steel plate method for designing is dissected on a kind of preceding road of articulatio sacroiliaca of the invention.
The implementation that the method for designing of locking steel plate is dissected on the preceding road of a kind of articulatio sacroiliaca of the invention is described in detail with reference to Fig. 1
Example：
The present invention provides the embodiment that the method for designing of locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca, including：
Step 100：Using reverse Engineering Technology build posterior ring pelvic before surface three dimension anatomic form the step of；
Step 200：Steel plate bottom surface is determined according to surface three dimension anatomic form before the posterior ring pelvic, and according to steel plate bottom surface
The step of obtaining steel plate；
Step 300：Nail is put in simulation on surface three dimension anatomic form before the posterior ring pelvic, and follows closely result in institute according to putting
State the step of locking steel plate is dissected on the preceding road of structure nail formation articulatio sacroiliaca on steel plate；
Step 400：The step of there is the preceding road of the articulatio sacroiliaca to dissect locking steel plate for output.
Fig. 2 show the flow chart that application reverse Engineering Technology in Fig. 1 builds surface three dimension anatomic form before posterior ring pelvic.
In the present embodiment, step 100：Using surface three dimension anatomic form before reverse Engineering Technology structure posterior ring pelvic
Step includes：
Step 110：The step of pelvis data being obtained using some normal pelvis of CT scan；
Step 120：The step that trigonometric ratio rebuilds surface three dimension anatomic form before posterior ring pelvic is carried out according to the pelvis data
Suddenly.
In the present embodiment, the pelvis data include measurement articulatio sacroiliaca peak along articulatio sacroiliaca line to articulatio sacroiliaca
The length value of true pelvis marginal point.
In step 110, the CT can be 64 row's spiral CTs；Three can be carried out in Mimics softwares in step 120
Dimension is rebuild；
Fig. 2 show the flow chart that application reverse Engineering Technology in Fig. 1 constructs surface model before posterior ring pelvic.
In the present embodiment, step 120：According to the pelvis data carry out trigonometric ratio rebuild posterior ring pelvic before surface three dimension
The step of anatomic form, includes：
The length value is divided into three groups by percentile from small to large, the median of length value is used as measurement described in every group
Posterior ring pelvic is small, in, big foundation；By it is described it is small, in, ring carries out trigonometric ratio reconstruction to the pelvis data after pelvis major；Build
Vertical coordinate system：Crista iliaca peak is taken as origin, is X-axis along human body horizontal direction, human body long axis direction is Y-axis, before and after human body
Direction is Z axis, sets up X-Y-Z coordinate systems；Standard flat is set up：Using crista iliaca peak as central point, X/Y plane set up it is long,
The virtual plane of a width of 30cm, the length value of setting 1/20 sets up cutting as spacing units in X-axis, Y-axis both direction
Plane, projection line joining of the cutting planes on the preceding surface of posterior ring pelvic is the measurement point as the preceding surface of posterior ring pelvic；
According to the coordinate position of the measurement point, multiplied by with spacing units value, we can obtain each measurement point (X, Y) value, and measurement is every
Individual measurement point to standard flat vertical range, as the Z values of measurement point；
(X, Y, Z) coordinate value according to each measurement point carries out surface three dimension before trigonometric ratio rebuilds posterior ring pelvic and dissects
Form.
In above-mentioned steps, it is possible to use Imageware softwares.
In the present embodiment, step 200：Steel plate bottom surface is determined according to surface three dimension anatomic form before the posterior ring pelvic,
And included according to the step of the acquisition steel plate of steel plate bottom surface：
Take on the preceding surface of surface three dimension anatomic form before the posterior ring pelvic at 4 points as steel plate bottom surface cut point, wherein
First point is inner side point of the steel plate near human body axis, and away from articulatio sacroiliaca line 2.5cm, first point is along X-axis to institute
State steel plate outer rim apart from 50mm, the 4th point is points outside, first point and the 4th point on the steel plate
Line updip is in 30 ° of angles with X-axis, and second point is inner side point under steel plate, and away from articulatio sacroiliaca line 1.5cm, the 3rd point is steel
It is in 15 ° of angles that the line of points outside under plate, second point and the 3rd point has a down dip with X-axis；According to described 4 points described
The bottom surface of the steel plate is determined before posterior ring pelvic on the preceding surface of surface three dimension anatomic form, can be used in above-mentioned steps
Imageware softwares；Bottom surface according to the steel plate determines the thickness of the steel plate, it is possible to use Solidworks softwares.
In the present embodiment, the step 300：Nail is put in simulation on surface three dimension anatomic form before the posterior ring pelvic,
And include according to putting nail result and nail being built on the steel plate and is formed the step of locking steel plate is dissected on the preceding road of articulatio sacroiliaca：
The steel plate is attached to before the posterior ring pelvic on the preceding surface of surface three dimension anatomic form；Simulation screw inserts the steel
Plate and the posterior ring pelvic, with human coronary face and sagittal plane as reference planes, in adjusting screw flare avoid articulatio sacroiliaca and
Inner side sacrum hole；After adjusting screw angle, record screw two-end-point (X, Y, Z) value, two-end-point coordinate value subtract each other obtain screw to
Amount (X1、Y1、Z1) value, wherein α=arctan (X1/Z1) it is the inner and outer inclination angle angle value of screw, β=arctan (Y1/Z1) be respectively
The forward and backward inclination angle angle value of screw, can use Mimics softwares in above-mentioned steps；According to the forward and backward inclination angle angle value of the screw and
Inside and outside inclination angle angle value and the screw position build nail on the steel plate and form the preceding road dissection locking steel plate of articulatio sacroiliaca,
UG software building nail can be used.
Fig. 3 show the stereogram that the embodiment of locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca of the invention.
The present invention also provides the reality that locking steel plate is dissected on a kind of a kind of preceding road of articulatio sacroiliaca obtained by above-mentioned method for designing
Apply example.
In the present embodiment, human body crista iliaca peak is taken as origin, is X-axis, people long axis of body side along human body horizontal direction
To being Y-axis, human body fore-and-aft direction is Z axis, in the X-Y-Z coordinate systems, four is taken on the preceding surface of ring after the human pelvis
Point is used as steel plate bottom surface cut point, wherein first point is inner side point of the steel plate near human body axis, away from articulatio sacroiliaca line
2.5cm, first point along X-axis to the steel plate outer rim apart from 50mm, the 4th point is points outside, institute on the steel plate
The line updip and X-axis that first point is stated with the 4th point are in 30 ° of angles, and second point is inner side point under steel plate, away from sacrum
Ilium joint line 1.5cm, the 3rd point is points outside under steel plate, and second point has a down dip with X-axis with the line of the 3rd point and be in
15 ° of angles；Determine the bottom surface of the steel plate on the preceding surface of ring after the human pelvis according to described 4 points；The thickness of the steel plate
Spend the 2.5mm that the other end is gradient to by the 2mm on the inside of human body axis.
In the present embodiment, the steel plate includes the sacral region 1 for fixing human articulatio sacroiliaca and ilium portion 2, described
Sacral region 1 is provided with three nail 11.
In the present embodiment, the material of the steel plate is medical titanium alloy or stainless steel.
Locking steel plate is dissected the invention provides a kind of preceding road of articulatio sacroiliaca, sacrum ilium pass is fixed from front using the steel plate
The dislocation of section and fracture., with articulatio sacroiliaca front anatomic form is met, the steel plate is in rumpbone compared with prior art for the steel plate
On screw number be three pieces, and be locking, i.e., form an entirety with steel plate, can substantially increase interior fixing intensity, it is to avoid answer
Power is concentrated, and prevents fixation failure.Be not required to it is moulding again to the steel plate, can reduce to surrounding soft tissue peel off, Interal fixation jail
Gu, to avoid damage to peripheral nerve, operating time short and the advantages of be not susceptible to Unstable internal fixation.Present invention also offers a kind of sacrum
Dissect the method for designing of locking steel plate in the preceding road in ilium joint.
Although having been presented for some embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment be it is exemplary, no
Should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (7)
1. the method for designing of locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca, it is characterised in that including：
The step of pelvis data being obtained using some normal pelvis of CT scan；
The pelvis data include length of the measurement articulatio sacroiliaca peak along articulatio sacroiliaca line to articulatio sacroiliaca true pelvis marginal point
Angle value, three groups are divided into by percentile by the length value from small to large, and the median of length value described in every group is used as measurement bone
After basin ring it is small, in, big foundation；
By it is small, in, ring carries out trigonometric ratio reconstruction to the pelvis data after pelvis major；
Set up coordinate system：Crista iliaca peak is taken as origin, is X-axis along human body horizontal direction, human body long axis direction is Y-axis, people
Body fore-and-aft direction is Z axis, sets up X-Y-Z coordinate systems；
Standard flat is set up, and using crista iliaca peak as central point, the virtual plane that length and width is 30cm is set up in X/Y plane, if
Fixed 1/20 length value sets up cutting planes as spacing units in X-axis, Y-axis both direction, and the cutting planes are in bone
The projection line joining on the preceding surface of ring is the measurement point as the preceding surface of posterior ring pelvic after basin；
According to the coordinate position of the measurement point, multiplied by with spacing units value, we can obtain each measurement point X, Y value, measurement
Each measurement point to standard flat vertical range, as the Z values of measurement point；
X, Y, Z coordinate value according to each measurement point carry out trigonometric ratio and rebuild surface three dimension anatomic form before posterior ring pelvic；
Steel plate bottom surface is determined according to surface three dimension anatomic form before the posterior ring pelvic, and the step of steel plate is obtained according to steel plate bottom surface
Suddenly；
Nail is put in simulation in the posterior ring pelvic, and the preceding road solution of nail formation articulatio sacroiliaca is built on steel plate according to nail result is put
The step of cuing open locking steel plate；
The step of there is the preceding road of the articulatio sacroiliaca to dissect locking steel plate for output.
2. the method for designing of locking steel plate is dissected on the preceding road of articulatio sacroiliaca as claimed in claim 1, it is characterised in that above-mentioned basis
Surface three dimension anatomic form determines steel plate bottom surface before the posterior ring pelvic, and is included according to the step of the acquisition steel plate of steel plate bottom surface：
Take on the preceding surface of surface three dimension anatomic form before the posterior ring pelvic at 4 points as steel plate bottom surface cut point, wherein first
Individual point is inner side point of the steel plate near human body axis, and away from articulatio sacroiliaca line 2.5cm, first point is along X-axis to the steel
Plate outer rim apart from 50mm, the 4th point is points outside on the steel plate, the line of first point and the 4th point
Updip is in 30 ° of angles with X-axis, and second point is inner side point under steel plate, and away from articulatio sacroiliaca line 1.5cm, the 3rd point is under steel plate
It is in 15 ° of angles that the line of points outside, second point and the 3rd point has a down dip with X-axis；
According to the described 4 points bottom surfaces for determining the steel plate on surface three dimension anatomic form before the posterior ring pelvic；
Bottom surface according to the steel plate determines the thickness of the steel plate.
3. the method for designing of locking steel plate is dissected on the preceding road of articulatio sacroiliaca as claimed in claim 2, it is characterised in that in the bone
Nail is put in simulation on surface three dimension anatomic form before ring after basin, and nail formation sacrum ilium is built on the steel plate according to nail result is put
The step of locking steel plate is dissected on the preceding road in joint includes：
The steel plate is attached to before the posterior ring pelvic on 4 points described in the preceding surface of surface three dimension anatomic form；
Simulation screw inserts surface three dimension anatomic form before the steel plate and the posterior ring pelvic, with human coronary face and sagittal plane
It is reference planes, adjusts flare in the screw, avoids articulatio sacroiliaca and inner side sacrum hole；
After adjusting the screw angle, record screw two-end-point X, Y, Z value, two-end-point coordinate value subtract each other obtain screw to
Amount (X1, Y1, Z1) value, wherein α=arctan (X1/Z1) is the inside and outside inclination angle angle value of screw, and β=arctan (Y1/Z1) is respectively
The forward and backward inclination angle angle value of screw；
According to the forward and backward inclination angle angle value of the screw and the inside and outside inclination angle angle value and the screw position on the steel plate
Build nail and form the preceding road dissection locking steel plate of articulatio sacroiliaca.
4. locking steel plate is dissected on a kind of preceding road of articulatio sacroiliaca, it is characterised in that the steel plate design according to claim 3
What method was obtained.
5. locking steel plate is dissected on the preceding road of articulatio sacroiliaca as claimed in claim 4, it is characterised in that take human body crista iliaca peak work
It is origin, is X-axis along human body horizontal direction, human body long axis direction is Y-axis, and human body fore-and-aft direction is Z axis, in X-Y-Z coordinate systems
In, take on the preceding surface of ring after the human pelvis at 4 points as steel plate bottom surface cut point, wherein first point is the steel plate
Near the inner side point of human body axis, away from articulatio sacroiliaca line 2.5cm, first point along X-axis to the steel plate outer rim away from
From 50mm, the 4th point is points outside on the steel plate, and first point is in X-axis with the line updip of the 4th point
30 ° of angles, second point is inner side point under steel plate, and away from articulatio sacroiliaca line 1.5cm, the 3rd point is points outside under steel plate, described
It is in 15 ° of angles that the line of second point and the 3rd point has a down dip with X-axis；According to the described 4 points tables before ring after the human pelvis
The bottom surface of the steel plate is determined on face；The thickness of the steel plate is gradient to the other end by the 2mm on the inside of human body axis
2.5mm。
6. locking steel plate is dissected on the preceding road of articulatio sacroiliaca as claimed in claim 4, it is characterised in that the steel plate is included for solid
Determine sacral region and the ilium portion of human body articulatio sacroiliaca, the sacral region is provided with three nail, and the ilium portion is provided with some
Nail.
7. locking steel plate is dissected on the preceding road of articulatio sacroiliaca as claimed in claim 4, it is characterised in that the material of the steel plate is doctor
With titanium alloy or stainless steel.
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| DE19922279A1 (en) * | 1999-05-11 | 2000-11-16 | Friedrich Schiller Uni Jena Bu | Procedure for generating patient-specific implants |
| US6652275B2 (en) * | 2001-07-27 | 2003-11-25 | Patricia H. Byers | Intra-oral article for cosmetically stretching and reconfiguring cheek skin and method for customizing same |
| CN1618412A (en) * | 2004-08-24 | 2005-05-25 | 上海倍尔康生物医学科技有限公司 | Technique for making restitution skull and jawbone by using biological artificial bone material combined with CAD/CAM technology |
| CN102750418B (en) * | 2012-06-27 | 2015-12-16 | 中国人民解放军第三军医大学第三附属医院 | Based on internal fixation steel plate Design and the method for prefabricating of augmented reality |
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2015
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