CN105852956A - Cervical pedicle screw feeding guiding formwork and preparation method thereof - Google Patents
Cervical pedicle screw feeding guiding formwork and preparation method thereof Download PDFInfo
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- CN105852956A CN105852956A CN201610235652.2A CN201610235652A CN105852956A CN 105852956 A CN105852956 A CN 105852956A CN 201610235652 A CN201610235652 A CN 201610235652A CN 105852956 A CN105852956 A CN 105852956A
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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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
Provided is a cervical pedicle screw feeding guiding formwork. The formwork surface of the guiding formwork is a profiling faying surface of a spinous process area on a single section cervical vertebra; the back side of the faying surface of the guiding formwork is provided with a handle; corresponding to a spinous process bump of the spinous process area, a limiting through hole penetrates the handle and the guiding formwork, a limiting tail pin is movably installed in the limiting through hole, and the tip of the limiting tail pin is embedded into and penetrates the spinous process bump; corresponding to pedicles on the two sides of the spinous process area, bosses are protruded on the back side of the faying surface of the guiding formwork respectively, the bosses are provided with hollow access through holes, and sleeves are movably installed in the hollow access through holes. The sleeves are medical resin sleeves. The guiding formwork has a sufficient faying area and faying stability, the shaking of the guiding formwork relative to a vertebral plate during an operation is effectively prevented, the pin feeding accuracy can be guaranteed for different patients, and the operation difficulty and the operation risk are lowered. The medical resin sleeves are high in consistency degree with the human tissue, pin feeding guiding for double-side or single-side vertebral body guiding can be achieved.
Description
Technical field
The present invention relates to surgical medical instrument field, particularly relate to Pedicle Screw Placement in Lower Cervical enter to follow closely guider and
Preparation method.
Background technology
In treatment spondylolishesis reset, corrective procedure, pedicle of vertebral arch location technology is that backbone is solid the most reliably
Determine mode.Owing to pedicle screw can play three-dimensional fixation, there is the advantages such as mechanical strength is high, fixing,
Its clinical practice is more and more extensive.But only nail is inserted along the long axis channel of dissection of pedicle of vertebral arch and reaches preferable
The degree of depth, could obtain preferable effect.Spinal vertebral surrounding anatomical structures is complicated, front and big blood vessel, dirty
Device is adjacent, is canalis spinalis inside pedicle of vertebral arch, in the narrow space that lower section is formed by nerve root, makes pedicle of vertebral arch screw
Nail insert difficulty and danger increases the most accordingly.Therefore, pedicle screw inner position technology is difficult in clinic
Universal, how safety and precise determines is inserted pedicle screw, and always basis and clinical research is extremely paid close attention to
Problem.
At present, the conventional method that vertebral arch is followed closely into nail specifically includes that (1) anatomic landmark point method；(2) vertebral plate is opened
Window method；(3) X-ray examination method；(4) computer navigation method.Wherein:
(1) although various anatomic points notation entry point, entering to follow closely angle slightly difference, but its common ground is
The entry point of pedicle screw, enter to follow closely direction and mainly judged by the experience of patient, rely primarily on patient's
Feel and pedicle of vertebral arch probe is opposed orders the exploration of passage to ensure accurately inserting of pedicle screw, wants doctor
Asking higher, accuracy is difficult to ensure that；
(2) vertebral lamina fenestration inevitably increases operating time and intraoperative blood loss；
(3) operating time of X-ray examination householder method is longer, the x-ray radiation amount of patient and medical personnel
Relatively big, bigger to its somatic damage；
(4) computer navigation method gradually obtains application in fixing in pedicle of lumbar vertebral arch screw in recent years,
The pedicle of vertebral arch image information utilizing patient real-time carrys out guided operation, reduces operation risk, reduces double of doctors and patients
The time of contact ray, tool has great advantage.But navigator is expensive, operate complex, art
Person's learning time is long, and clinical universal appointing so has problems.
Along with the progress of 3D printing technique, attempt with 3D, direction engineering is printed skill medical domain people
The mode that art combines, utilize the equipment such as CT or nuclear magnetic resonance (MRI) gather human organ, bone,
The shape data at the positions such as joint, rebuilds three-dimensional digitalization model, then utilizes 3D printing type manufacture to teach
Learn and referential model of performing the operation, be usually used in helping manufacture artificial limb or carry out surgical repair.
But, existing enter to follow closely guider and deposit after placement without fixed structure, in surgical procedure easily with respect to
Human body rocks, and causes the error into nail direction, and guider can produce when with the friction of pedicle screw
Raw chip, harmful after introducing tissue, additionally guider volume is relatively big, and therefore operation suits
Face is relatively big, and the most also device adhibition is bad waits series of problems.
Summary of the invention
The technical problem to be solved is to provide a kind of Pedicle Screw Placement in Lower Cervical to enter to follow closely guiding die plate.
This guiding die plate can effectively be fitted in the cervical vertebra of human body, has laminating fixed structure, it is ensured that performed the operation
In journey, guiding die plate will not rock by cervical vertebra relatively, it is possible to achieve bilateral or pleurocentrum guiding are entered nail and leads
To, and simple and reliable for structure, easy to use, effectively can provide personalized vertebral arch spiral shell for different patients
Follow closely into nail guide duct, it is ensured that enter nail accuracy, reduce operation difficulty, have control control operation cost and
The risk of operation.
The present invention is achieved by the following technical solutions:
A kind of Pedicle Screw Placement in Lower Cervical enters to follow closely guiding die plate, it is characterised in that:
Guiding die plate knee-piece in wave shape shape, its plate face is the profiling binding face in the spinous process region on single-unit cervical vertebra,
It is fitted on spinous process region；
Dorsal part at guiding die plate binding face is provided with handle, the spinous process bump pad in corresponding spinous process region, runs through hand
Handle and guiding die plate offer at least one place's limiting through hole, the spacing tailpin of movable loading, spacing tail in limiting through hole
The embedding spinous process bump pad that thrusts in the tip of pin, keeps the bonding position in guiding die plate and spinous process region to immobilize；
The pedicle of vertebral arch of corresponding both sides, spinous process region, the dorsal part of guiding die plate binding face protrusion, boss respectively
On offer hollow approach through hole, movable in hollow approach through hole load sleeve, sleeve can be at hollow approach through hole
In circumferentially relatively rotate, sleeve head end is concordant with guiding die plate binding face or is positioned at inside guiding die plate,
Tail end exposes to guiding die plate dorsal part；
Described sleeve hardness is to have the sleeve of good biocompatibility.
When the guiding die plate of thin board type enables guiding die plate stress, waveform binding face elastic fit is in human body
Vertebra position；The thickening boss of guiding die plate dorsal part it is opened in for installing the hollow approach through hole of sleeve,
By longer hollow approach through hole and sleeve with the use of, it is possible to pedicle screw is played the best
To effect；Sleeve is movably arranged in hollow approach through hole, and pedicle screw activity passes sleeve, by set
Cylinder position, the entry point of angle-determining pedicle screw and nail direction, road on guiding die plate, it is possible to logical
Cross length sleeve and determine the entrance degree of depth of pedicle screw, it is ensured that enter the accuracy of nail, reduce the difficulty of operation
Degree and the risk of operation；Owing to sleeve material hardness is relatively low relative to pedicle screw and guiding die plate, and three
Person is matched in clearance, therefore in surgical procedure, even if between pedicle screw and sleeve, sleeve and guiding
Phase mutual friction between template, a little chip of generation also can be sleeve chip, and bush material has good life
Thing compatibility, can promote that the adhesion of human tissue cell grows, and human body will not cause bigger burden；Use
There is good biocompatibility material sleeve and other relative low price but the poor material of biocompatibility
The composite construction of guiding die plate rather than guiding die plate entirety use price high there is good biological phase
Capacitive material, can effectively reduce the cost of device, reduces operation cost, alleviates patient's burden economically；
Being directed to by spacing tailpin in operation that template is spacing to be fixed on spinous process region, operation is taken out spacing after terminating
Tailpin, spacing tailpin can effectively prevent guiding die plate in surgical procedure from rocking relative to vertebral plate, make guiding die plate
More preferable with human vertebra stickiness, more stable, it is to avoid to enter to follow closely the error in direction.
Further, described handle is the "eight" shape of hollow, and its root relatively opened is fixed on guiding
In template, the head of relative constriction connects as one, and junction is corresponding with spinous process bump pad position, " eight "
The interval, two ends of opening of font handle is fixed on the two ends of guiding die plate, shrinks two ends and links together, it is simple to
Patient exerts a force force uniform to guiding die plate, by patient's joystick, adjustable guiding die plate and human body ridge
Post bonding position and the stability of raising laminating.This kind of handle is applicable to little the growing up of most of cervical vertebra disfiguration
Cervical spondylopathy patient.After decompression or during sham operated, it is directed to template laminating and is placed on corresponding vertebra vertebra
On plate, pedicle screw passes through the axially directed nail road on the sleeve in hollow approach through hole on vertebra lateral mass
Boring.Having limiting through hole on guide plate handle, limiting through hole avoids patient's force application location, from the connection of handle
Duan Chaoxiang guiding die plate is offered, and limiting through hole guide and limit tailpin is squeezed in spinous process, makes guiding die plate and human body
Vertebra stickiness is more preferable, more stable.
Further, described handle is in " T " font, and its crosspiece two ends are fixed on guiding die plate, crosspiece
Middle part is oppositely oriented template evagination, and the evagination crosspiece of " T " font handle plays reinforcement guiding die plate intensity and props up
The perpendicular section effect of support stress.This handle be applicable to some cervical spondylosis than more serious or cervical vertebra is less, unfavorable
In the adult patient or the children that arrange "eight" shape handle.Limiting through hole avoids patient's force application location, from
The handle section of erecting is offered towards guiding die plate, and limiting through hole guide and limit tailpin is squeezed in spinous process, makes guiding die plate
More preferable with human vertebra stickiness, more stable.Splayed handle and yi word pattern handle all meet man-machine work
Cheng Xue, facilitates patient to use.
Further, the most protruding first flange on described sleeve revealed section, sleeve loads hollow approach and leads to
Kong Shi, the first flange activity covers exposing on port at hollow approach through hole.First flange is used for limiting set
Wound packages enters the length of hollow approach through hole, makes sleeve head end concordant with guiding die plate binding face or is positioned at guiding
Inside template, tail end exposes to guiding die plate dorsal part, facilitates patient to use.
Further, on described sleeve tail end the most protruding second flange, the first flange and the second flange it
Between form a ring annular groove.Annular groove is Handheld Division, facilitates patient to take and installs elongated sleeve, symbol
Close ergonomics.
Further, described sleeve loads the load segment external diameter of hollow approach through hole and hollow approach through hole internal diameter
Between diameter ratio be 0.8～1, guaranteeing while nail accuracy, it is ensured that sleeve can be at hollow approach
Can circumferentially relatively rotate in through hole, reduce friction between the two, it is to avoid produce too much friction chip.
Further, described guiding die plate accounts for the 0.5～1 of spinous process region surface with the binding face in spinous process region,
Ensure that between guiding die plate and spinous process region, laminating is fully, it is ensured that the stability of laminating.
Further, described limiting through hole is to be spaced 1～6 offered.More spacing tailpin can be more
The good stickiness ensureing guiding die plate, but bigger wound can be caused in spinous process region by too much spacing tailpin
Evil, therefore limiting through hole quantity is usually no more than 6, is optimal with about 2.
Further, described sleeve is medical resin sleeve, titanium alloy sleeve, vitallium sleeve, pottery
Ceramic material, high molecular polymer material sleeve or other is similar, have good biocompatibility material
One-body molded it is prepared from, reduces the operation damage to patient.
A kind of Pedicle Screw Placement in Lower Cervical of preparing enters to follow closely the method for guiding die plate, it is characterised in that:
The first step, sets up 3-D geometric model: gather CT or the MRI data of corrective surgery region vertebra,
Data saved as two-dimensional image data and imports image processing software, reconstructing corrective surgery region vertebra
Threedimensional model；
Second step, determines pedicle screw road: imported by the vertebra threedimensional model of above-mentioned reconstruct in three-dimensional software,
Position a series of XY parallel reference face so that reference planes are vertical with pedicle of vertebral arch outline direction, carry respectively
Take pedicle of vertebral arch and reference planes intersecting outlines line, fit to cylinder passage, be sleeve and enter paths, and
Determine cylinder passage central coordinate of circle, so that it is determined that the entry point of vertebral arch nail, enter the degree of depth and nail direction, road；
3rd step, generates guiding die plate: in three-dimensional software, skeleton model carries out grid optimization, extracts
Bone surface grid, reserve migration generates the guiding die plate of suitable thickness after increasing, then with the above-mentioned vertebra determined
Pedicle screw road is reversed matching, generates hollow approach through hole and the sleeve matched with it, and generates hand
Handle and limiting through hole, obtain guiding die plate model；
4th step, 3D printing and making model: the guiding die plate model of above-mentioned 3rd step of printing and making, and simultaneously
Produce the corrective surgery region vertebra threedimensional model of reconstruct, it is simple to doctor carries out preoperative planning, it is ensured that guide
Template and pedicle screw enter to follow closely the accuracy in direction.
Further, in the described first step, two-dimensional image data is DICOM format or other identification forms；
After two-dimensional image data is imported image processing software, filtering, noise reduction means is used to carry out image pre-treatment,
Gray-scale value is set further according to joint profile, reconstructs the threedimensional model of corrective surgery region vertebra, and preserve
For STL formatted file.
The beneficial effects of the present invention is:
1, the profiling thin-walled binding face of guiding die plate when stress can elastic fit at the vertebra position of human body,
Fitting area is abundant, and laminating is stable；
2, the fixed structure of spacing tailpin can effectively prevent guiding die plate in surgical procedure from rocking relative to vertebral plate,
Make guiding die plate more preferable with human vertebra stickiness, more stable, it is to avoid to enter to follow closely the error in direction；
3, guiding die plate generates according to the individual spinous process region shape of different patients, it is possible to carry for pedicle screws
Enter nail for personalization and guide duct, it is ensured that enter the accuracy of nail, reduce difficulty and the risk of operation of operation；
4, there is the medical property material sleeve of good biocompatibility and the biocompatibility of human tissue cell
Height, even if friction produces a small amount of chip in surgical procedure, also will not cause bigger burden to human body, and
Without the material with good biocompatibility that guiding die plate entirety employing cost is the highest, effectively control
Operation cost；
5, multiple handle is selected flexibly, is suitable for different patients；
6, two hollow approach through holes are opened on the thickening boss of guiding die plate dorsal part, coordinate long sleeve to make
With, can guarantee that fully guidance quality is good to pedicle screw spacing, and can realize bilateral or one side
What centrum guided enters nail guiding, simple and reliable for structure, easy to use.
Accompanying drawing explanation
Fig. 1 is the three-dimensional fit structure schematic diagram of a kind of preferred structure of this device and spinous process region
Fig. 2 is the three-dimensional fit structure schematic diagram of this device another kind preferred structure and spinous process region
Fig. 3 is the fit structure schematic diagram of sleeve and guiding die plate
In Fig. 1～3: 1 is guiding die plate, 101 is hollow approach through hole, and 102 is boss, and 2 is sleeve,
3 is pedicle screw, and 201 is the first flange, and 202 is the second flange, and 203 is annular groove, and 6 is hand
Handle, 7 is limiting through hole.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 1～2, guiding die plate 1 knee-piece in wave shape shape, its plate face is the spinous process on single-unit cervical vertebra
The profiling binding face in region 2, is fitted on spinous process region 2, guiding die plate 1 and the laminating in spinous process region 2
Face accounts for the 0.5～1 of surface, spinous process region 2.
The pedicle of vertebral arch of corresponding both sides, spinous process region 2, the dorsal part of guiding die plate 1 binding face protrusion respectively
102, boss is offered hollow approach through hole 101.
Dorsal part at guiding die plate 1 binding face is additionally provided with handle 6, the spinous process bump pad in corresponding spinous process region 2,
Run through handle 6 and guiding die plate 1 offers limiting through hole 7 at, the spacing tail of movable loading in limiting through hole 7
Pin, the embedding spinous process bump pad that thrusts in the tip of spacing tailpin, keep guiding die plate 1 and the laminating in spinous process region 2
Position immobilizes.
In Fig. 1, the handle 6 "eight" shape in hollow, its root relatively opened is fixed on guiding die plate
On 1, the head of relative constriction is connected as one by crosspiece, before connecting crosspiece and spinous process bump pad position,
Rear correspondence, limiting through hole 7 is offered towards guiding die plate 1 from the linkage section of handle 6.
In Fig. 2, handle 6 is in " T " font, and its crosspiece two ends are fixed on guiding die plate 1, in crosspiece
Portion is in the arc block shape of the dorsal part evagination being oppositely oriented template 1 binding face, and limiting through hole 7 is from perpendicular section free end
Thickening part offer towards guiding die plate 1, avoid the hand griping position of patient.
Loading sleeve 2 as it is shown on figure 3, movable in hollow approach through hole 101, sleeve 2 loads hollow approach
Diameter ratio between load segment external diameter and hollow approach through hole 101 internal diameter of through hole 101 is 0.8～1, sleeve
2 circumferentially can relatively rotate in hollow approach through hole 101, sleeve 2 head end and guiding die plate 1 binding face
Concordant or to be positioned at guiding die plate 1 internal, tail end exposes to guiding die plate 1 dorsal part.On sleeve 2 revealed section
The most protruding first flange 201, when sleeve 2 loads hollow approach through hole 101, the first flange 201 is lived
Dynamic covering exposing on port at hollow approach through hole 101；The most protruding second flange on sleeve 2 tail end
202, form a ring annular groove 203 between the first flange 201 and the second flange 202, make in sleeve 2
Load spacing in hollow approach through hole 101 and patient is hand-held.Sleeve 2 is medical resin sleeve.
A kind of preparing above-mentioned Pedicle Screw Placement in Lower Cervical and enter to follow closely the method for guiding die plate, step is:
The first step, sets up 3-D geometric model: gather CT or the MRI data of corrective surgery region vertebra,
Data are saved as DICOM format or the two-dimensional image data of other form and imports MIMICS or other figure
After processing software, use filtering, noise reduction means to carry out image pre-treatment, ash is set further according to joint profile
Bottom valve value, reconstructs the threedimensional model of corrective surgery region vertebra, and saves as STL formatted file；
Second step, determines pedicle screw road: imported by the vertebra threedimensional model of above-mentioned reconstruct in three-dimensional software,
Position a series of XY parallel reference face so that reference planes are vertical with pedicle of vertebral arch outline direction, carry respectively
Take pedicle of vertebral arch and reference planes intersecting outlines line, fit to cylinder passage, be sleeve and enter paths, and
Determine cylinder passage central coordinate of circle, so that it is determined that the entry point of vertebral arch nail, enter the degree of depth and nail direction, road；
3rd step, generates guiding die plate: in Slodworks or other three-dimensional software, enter skeleton model
Row grid optimization, extracts bone surface grid, and reserve migration generates the guiding die plate 1 of suitable thickness after increasing,
Then be reversed matching with the above-mentioned pedicle screw road determined, generate hollow approach through hole 101 and and its
The sleeve 2 matched, and generate handle and limiting through hole 7, obtain guiding die plate model；
4th step, 3D printing and making model: the guiding die plate model of above-mentioned 3rd step of printing and making, and simultaneously
Produce the corrective surgery region vertebra threedimensional model of reconstruct, it is simple to doctor carries out preoperative planning, it is ensured that guide
Template and pedicle screw enter to follow closely the accuracy in direction.
Claims (10)
1. a Pedicle Screw Placement in Lower Cervical enters to follow closely guiding die plate, it is characterised in that:
Guiding die plate (1) knee-piece in wave shape shape, its plate face is the imitative of the spinous process region (2) on single-unit cervical vertebra
Shape binding face, is fitted on spinous process region (2)；
Dorsal part at guiding die plate (1) binding face is provided with handle (6), the spinous process of corresponding spinous process region (2)
Bump pad, runs through handle (6) and guiding die plate (1) offers at least one place's limiting through hole (7), spacing logical
The spacing tailpin of movable loading in hole (7), the embedding spinous process bump pad that thrusts in the tip of spacing tailpin, keep guiding
The bonding position of template (1) and spinous process region (2) immobilizes；
The pedicle of vertebral arch of corresponding spinous process region (2) both sides, the dorsal part of guiding die plate (1) binding face projection respectively
Boss (102), boss is offered hollow approach through hole (101), movable in hollow approach through hole (101)
Loading sleeve (2), sleeve (2) circumferentially can relatively rotate in hollow approach through hole (101), sleeve
(2) head end is concordant with guiding die plate (1) binding face or is positioned at guiding die plate (1) inside, outside tail end
It is exposed to guiding die plate (1) dorsal part；
Described sleeve (2) is the sleeve with good biocompatibility.
Pedicle Screw Placement in Lower Cervical the most according to claim 1 enters to follow closely guiding die plate, it is characterised in that:
The described handle (6) "eight" shape in hollow, its root relatively opened is fixed on guiding die plate (1)
On, the head of relative constriction connects as one, and junction is corresponding with spinous process bump pad position, limiting through hole (7)
Offer towards guiding die plate (1) from the linkage section of handle (6).
Pedicle Screw Placement in Lower Cervical the most according to claim 1 enters to follow closely guiding die plate, it is characterised in that:
Described handle (6) is in " T " font, and its crosspiece two ends are fixed on guiding die plate (1), in the middle part of crosspiece
Being oppositely oriented template (1) evagination, limiting through hole (7) is offered towards guiding die plate (1) from perpendicular section.
Pedicle Screw Placement in Lower Cervical the most according to claim 1 enters to follow closely guiding die plate, it is characterised in that:
The most protruding first flange (201) on described sleeve (2) revealed section, sleeve (2) loads hollow approach
During through hole (101), the first flange (201) is movable covers the exposed junction hollow approach through hole (101)
On mouth.
Pedicle Screw Placement in Lower Cervical the most according to claim 4 enters to follow closely guiding die plate, it is characterised in that:
The most protruding second flange (202) on described sleeve (2) tail end, the first flange (201) and second convex
A ring annular groove (203) is formed between edge (202).
Pedicle Screw Placement in Lower Cervical the most according to claim 1 enters to follow closely guiding die plate, it is characterised in that:
Described sleeve (2) loads the load segment external diameter of hollow approach through hole (101) and hollow approach through hole (101)
Diameter ratio between internal diameter is 0.8～1.
Pedicle Screw Placement in Lower Cervical the most according to claim 1 enters to follow closely guiding die plate, it is characterised in that:
Described guiding die plate (1) accounts for the 0.5～1 of spinous process region (2) surface with the binding face in spinous process region (2).
Pedicle Screw Placement in Lower Cervical the most according to claim 1 enters to follow closely guiding die plate, it is characterised in that:
Described sleeve (2) is medical resin sleeve, titanium alloy sleeve, vitallium sleeve, ceramic material or
High molecular polymer material sleeve.
9. prepare Pedicle Screw Placement in Lower Cervical and enter to follow closely the method for guiding die plate for one kind, it is characterised in that:
The first step, sets up 3-D geometric model: gather CT or the MRI data of corrective surgery region vertebra,
Data saved as two-dimensional image data and imports image processing software, reconstructing corrective surgery region vertebra
Threedimensional model；
Second step, determines pedicle screw road: imported by the vertebra threedimensional model of above-mentioned reconstruct in three-dimensional software,
Position a series of XY parallel reference face so that reference planes are vertical with pedicle of vertebral arch outline direction, carry respectively
Take pedicle of vertebral arch and reference planes intersecting outlines line, fit to cylinder passage, be sleeve and enter paths, and
Determine the central coordinate of circle of cylinder passage, so that it is determined that the entry point of vertebral arch nail, enter the degree of depth and nail direction, road；
3rd step, generates guiding die plate: in three-dimensional software, skeleton model carries out grid optimization, extracts
Bone surface grid, reserve migration generates the guiding die plate (1) of suitable thickness, then determines with above-mentioned after increasing
Pedicle screw road be reversed matching, generate hollow approach through hole (101) and the set matched with it
Cylinder (2), and generate handle and limiting through hole (7), obtain guiding die plate model；
4th step, 3D printing and making model: the guiding die plate model of above-mentioned 3rd step of printing and making, and simultaneously
Produce the corrective surgery region vertebra threedimensional model of reconstruct.
Pedicle Screw Placement in Lower Cervical of preparing the most according to claim 9 enters to follow closely the method for guiding die plate, its
It is characterised by:
In the described first step, two-dimensional image data is DICOM format；
After two-dimensional image data is imported image processing software, filtering, noise reduction means is used to locate before carrying out image
Reason, arranges Gray-scale value further according to joint profile, reconstructs the threedimensional model of corrective surgery region vertebra, and
Save as STL formatted file.
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| CN201610235652.2A CN105852956A (en) | 2016-04-15 | 2016-04-15 | Cervical pedicle screw feeding guiding formwork and preparation method thereof |
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| CN106618672A (en) * | 2016-11-11 | 2017-05-10 | 广西中医药大学附属瑞康医院 | Guide plate and manufacturing equipment thereof |
| CN107080583A (en) * | 2017-05-31 | 2017-08-22 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | It is a kind of to be used to instruct the two-dimentional reference column guided mode sleeve-board part that spinal surgery puts nail |
| CN109171932A (en) * | 2018-10-11 | 2019-01-11 | 刘观燚 | A kind of screw steel plate system for being fixed in posterior approach for axis |
| CN109567923A (en) * | 2018-11-22 | 2019-04-05 | 自贡市第四人民医院(自贡市急救中心) | A kind of personalization Pedicle Screw Placement in Lower Cervical navigation template device and preparation method thereof step by step |
| CN109907812A (en) * | 2019-04-22 | 2019-06-21 | 赵刘军 | A kind of 3D printing anterior cervical vertebrae pedicle screw guiding die plate |
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| CN106618672A (en) * | 2016-11-11 | 2017-05-10 | 广西中医药大学附属瑞康医院 | Guide plate and manufacturing equipment thereof |
| CN107080583A (en) * | 2017-05-31 | 2017-08-22 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | It is a kind of to be used to instruct the two-dimentional reference column guided mode sleeve-board part that spinal surgery puts nail |
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| CN109907812A (en) * | 2019-04-22 | 2019-06-21 | 赵刘军 | A kind of 3D printing anterior cervical vertebrae pedicle screw guiding die plate |
| CN111449751A (en) * | 2020-04-24 | 2020-07-28 | 溧阳市人民医院 | Method for manufacturing area locking type 3D printing navigation template |
| CN111759442B (en) * | 2020-06-18 | 2021-04-20 | 夏磊 | Pedicle screw placing guide clamp |
| CN111759442A (en) * | 2020-06-18 | 2020-10-13 | 夏磊 | Pedicle screw placing guide clamp |
| CN112315581A (en) * | 2020-09-29 | 2021-02-05 | 上海霖晏医疗科技有限公司 | Method and device for determining pedicle screw feeding point |
| CN112315581B (en) * | 2020-09-29 | 2022-05-06 | 上海霖晏医疗科技有限公司 | Method and device for determining pedicle screw feeding point |
| CN113244516A (en) * | 2021-07-05 | 2021-08-13 | 真实维度科技控股(珠海)有限公司 | Non-coplanar puncture template manufacturing method based on bony multipoint positioning and template |
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| CN114376704A (en) * | 2021-12-30 | 2022-04-22 | 衢州市人民医院 | Cervical vertebra 3D printing navigation template and preparation method thereof |
| CN114569230A (en) * | 2022-02-28 | 2022-06-03 | 中国人民解放军陆军特色医学中心 | Lower cervical vertebra pedicle positioning guide plate and manufacturing method thereof |
| CN114569230B (en) * | 2022-02-28 | 2023-07-07 | 中国人民解放军陆军特色医学中心 | Lower cervical pedicle positioning guide plate and manufacturing method thereof |
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