CN105193527B - A kind of method of EBM metals 3D printing personalization human body femoral prosthesis oversleeve - Google Patents
A kind of method of EBM metals 3D printing personalization human body femoral prosthesis oversleeve Download PDFInfo
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- CN105193527B CN105193527B CN201510232768.6A CN201510232768A CN105193527B CN 105193527 B CN105193527 B CN 105193527B CN 201510232768 A CN201510232768 A CN 201510232768A CN 105193527 B CN105193527 B CN 105193527B
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Abstract
The invention discloses a kind of method of EBM metals 3D printing personalization human body femoral prosthesis oversleeve, the method includes：To epimere encryption CT scan in metaphysis its part, CTdicom data are imported Mimics softwares and rebuilds grid model；Resurfacing, fairing processing are carried out to grid model；Modify after carrying out to bone three-dimensional grid model application Artificial Joint Design theory；Build surface, design and generate personalized articular prosthesis threedimensional model；Personalized articular prosthesis are adjusted in shape by finite element analysis；The threedimensional model of implant is imported rapidform machine, by the 3D printing of EBM RP technology metals out.The present invention prints the finished product of manufacture, can be matched with the Distal femoral metaphysis pulp cavity shape of each patient completely, only need to pulp cavity burr in a small amount of art, it is possible to personalized femoral prosthesis is tapped and is implanted into, obtain good initial fixed and long-term biology and fix.
Description
Technical field
A kind of the invention belongs to 3D printing technique field, more particularly to EBM metals 3D printing personalization human body femoral prosthesis
The method of oversleeve.
Background technology
Existing standardization artificial femoral prosthesis be based on universal femoral bone cavitas medullaris form statistics numeral designing, and
Everyone femur cavitas medullaris shape is each different, and therefore, standardization artificial femoral prosthesis shape and femur cavitas medullaris shape are substantially
All it is unmatched.In total hip arthroplasty, plenty of time consumption in gradually burr pulp cavity, repeatedly in die trial is
Selected a certain prosthesis handle elder generation burr forms a suitable lacuna, then it is firm to give type femoral bone end prosthesis to be implanted into percussion.Standard
Type femoral bone end prosthesis are implanted into the problem for existing：The loaded down with trivial details time-consuming, bone loss of burr pulp cavity is more, easy Periprosthetic bone in concurrent art
Folding, many intraoperative hemorrhages, operating time length, relevant postoperative complication are more, post-operative recovery is slow.For near end of thighbone pulp cavity deformity,
The thin and straight pulp cavity of Crowe4 types, the femoral bone cavitas medullaris of near-end distortion, standard femoral stem cannot effectively be implanted into or mate.Standardization stock
The every kind of prosthese shape of bone handle prosthese determines (shank body inside curve radian, three-dimensional taper), with the natural mismatch of Pulp chamber.
During existing personalized customization femoral prosthesis design charges, without special design software, manufacture loaded down with trivial details：Individually need to make
Mould, casting, forging, milling, mill, plane.Manufacturing cycle is especially long, and expensive, and clinical practice is few, is mainly used in tumour false
The customization of body.
Content of the invention
It is an object of the invention to provide a kind of method of EBM metals 3D printing personalization human body femoral prosthesis oversleeve, purport
Existing standardization artificial femoral prosthesis and the natural mismatch of Pulp chamber is being solved, the manufacture of personalized customization femoral prosthesis is loaded down with trivial details
Problem.
The present invention is achieved in that a kind of method of EBM metals 3D printing personalization human body femoral prosthesis oversleeve includes：
Step one, in metaphysis its part epimere encryption CT scan, by CTdicom data import Mimics software weights
Networking lattice model；
Step 2, resurfacing, fairing processing are carried out to grid model；
Step 3, bone three-dimensional grid model application Artificial Joint Design theory is carried out after modify；
Step 4, build surface, design and generate personalized articular prosthesis threedimensional model, falling for a vertical shape inside model
Conical cavity, internal diameter are standardized designs, can obtain jail with standardization femoral stem shank body by Morse taper tapers are chimeric
Solid assemble fixation, femoral neck, shoulder and distal end shank body are overall using standardised seriesization manufacture；
Step 5, personalized articular prosthesis are adjusted in shape by finite element analysis；
Step 6, the threedimensional model of implant is imported rapidform machine, by the 3D printing of EBM RP technology metals out.
Further, the 3D printing system bag used by the method for EBM metals 3D printing personalization human body femoral prosthesis oversleeve
Include installing rack, the print platform in installing rack and the printhead above print platform, inert gas-shielded arc welding to connect and be
System, clamping device, feeding mechanism, material supporting plate, X-axis telecontrol equipment, Y-axis telecontrol equipment, Z axis telecontrol equipment；
Described printhead is connected on XYZ three-axis moving devices, the three-dimensional coordinate of three-shaft linkage positioning printing head, is printed
Ground floor section drawing shape movement of the head in the drive lower edge target part of X, Y two axle movement mechanism, when ground floor section weldering
After closing completely, printhead is lifted Z axis motion one layer of height, repeats the printing of next layer of section；
The print platform is provided with the Z axis telecontrol equipment for driving print platform to move along Z axis, and the Z axis telecontrol equipment includes
It is arranged on the Z axis guide pad and Z axis feed screw nut's seat of print platform both sides, and the Z axis guiding for being arranged on installing rack both sides
Post, Z axis screw mandrel and Z axis motor, the Z axis guide pad are enclosed within the Z axis lead column, and the Z axis feed screw nut cover for seat is in institute
State on Z axis screw mandrel, the Z axis motor drives the Z axis screw mandrel by Z axis Timing Belt；
The X-axis telecontrol equipment for driving 3D printing head to move along X-axis, and the Y-axis that driving X-axis telecontrol equipment is moved along Y-axis
Telecontrol equipment, the X-axis telecontrol equipment include that bracing frame, X-axis motor and X-axis slide block, support frame as described above include top board and biside plate,
X-axis guide rod is provided between two side plates, and the X-axis slide block is enclosed within X-axis guide rod, and support frame as described above both sides are provided with synchronous pulley,
It is provided with X-axis Timing Belt between two synchronous pulleys, the X-axis Motor drive one of synchronous pulley is set in the X-axis slide block
There is tooth bar, the tooth bar is engaged with X-axis Timing Belt；
3D printing head is driven to include y-axis motor, Y-axis screw mandrel and located at support frame as described above along the Y-axis telecontrol equipment that Y-axis is moved
Top board on Y-axis feed screw nut, the y-axis motor directly drives Y-axis screw mandrel, and the Y-axis feed screw nut is enclosed within Y-axis screw mandrel
On, the both sides of support frame as described above are provided with Y-axis guide pad, are provided with Y-axis guide rail, the Y on the installing rack at corresponding Y-axis guide pad
Axle guide pad is coordinated with Y-axis guide rail；
Described printhead includes that melting-painting nozzle, reinforcing nozzle, the melting-painting nozzle are used for pulverized powder, the reinforcing spray
Mouth is used for spraying shot-peening or transmitting laser, and the melting-painting nozzle is centrally disposed, and the reinforcing nozzle is arranged on outside melting-painting nozzle
Enclose, the reinforcing nozzle includes 3-5 jet pipe, and each jet pipe can realize independent shot-peening by electrical system control；
Inert gas generation system in described inert gas-shielded arc welding welding system include aerogenesis unit, detector unit,
Cooling unit and controller, the aerogenesis unit include inert gas producer and with inert gas producer inside connect
Logical combustion powder automatic feed unit, the detector unit include O2Gas analyzer and O2, CO gas analyzers, the cooling list
Unit includes least one set cooler, the O2The inlet end of gas analyzer is connected with confined space is protected by the first blower fan
Logical, its outlet side passes through pipeline by pipeline and inert gas producer inlet communication, the outlet of the inert gas producer
Connect with cooler, the cooler is connected with confined space is protected by the second blower fan, the O2, CO gas analyzers lead to
Piping is connected with cooler, the combustion powder automatic feed unit, O2Gas analyzer and O2, CO gas analyzers respectively with
Controller connects；
Second blower fan with by the pipeline of protection confined space connection on be provided be connected with controller two three
Logical electrical ball valve, the controller is according to O2, the detection of CO gas analyzers result, control two-position three way electrical ball valve is by pipe
Road is connected with confined space or inert gas producer is protected, in first blower fan and O2The pipeline of gas analyzer connection
On be provided with the gas flow sensor being connected with controller.
Further, described print platform carry out be layered printing concrete grammar include：
Step one, cladding layer shaping：
Some cladding layers, the thickness of each layer of cladding layer is formed initially with metal 3D printing technique in substrate surface
0.05-0.3mm, when cladding layer reaches certain thickness, stops 3D printing shaping；
Step 2, cladding layer heating：
Cladding layer upper surface is heated to 100 DEG C -700 DEG C by heater；
Step 3, cladding layer subregion：
Cladding layer is divided into frontier district and mesozone；Wherein frontier district is made up of external boundary region, or by external boundary region and
Inner boundary district's groups into；The external boundary region by part outline to inside parts offset the closed curves that formed of 0.5-3mm with
The closed area that the outline is formed, the inner edge battery limit (BL) offset what 0.5-3mm was formed by part Internal periphery to inside parts
The closed area that closed curve is formed with the Internal periphery；The mesozone is other regions in addition to frontier district；
Step 4, cladding layer reinforcing：
Reinforcing order is first frontier district mesozone 7 again, and the coverage rate during reinforcing of mesozone is the 0.5-0.8 of frontier district
Times；
Step 5, cladding layer continue shaping：
Some cladding layers, thickness 0.05-0.3mm are continuously formed at the top of the cladding layer after reinforcing；
Step 6, repeat step two, three, four, five are until the shaping of metal 3D printing part is completed.
Further, the metal powder used by the method for described EBM metals 3D printing personalization human body femoral prosthesis oversleeve
The preparation method at end includes：
Step one, sub-micron-sized metal powder is prepared using physical vaporous deposition or chemical vapour deposition technique first, institute
The average grain diameter of the sub-micron-sized metal powder for obtaining is 0.1-3 microns；
Step 2, by the average grain diameter of step one gained for 0.1-3 microns sub-micron-sized metal powder mix with liquid,
It is configured to metal powder slurry；The weight ratio of the sub-micron-sized metal powder liquid of above-mentioned metal powder slurry is 0.25-2.0: 1；
Step 3, in the metal powder slurry of step gained add sub-micron-sized metal powder weight 0.1-10% organic
Adhesive, is uniformly mixed；
Step 4, the slurry for being uniformly mixed step 3 granulate mechanism by centrifugal spraying granulator or press atomization
Standby balling-up shape, the 3D printing that average grain diameter is 10-50 microns metal dust.
Further, described gas flow sensor includes Circuits System, LASER Light Source, glass rotameter, substrate
Substrate, at least one micro- adding thermal resistance, the micro- temperature detecting resistance at least one upstream, the micro- temperature detecting resistance at least one downstream, at least one
Individual ambient resistance, optical fiber image transmission beam and photodiode arrangement, substrate base open up fluted, at least one micro- adding thermal resistance,
The micro- temperature detecting resistance at least one upstream, the two ends of the micro- temperature detecting resistance at least one downstream are each attached on substrate base and hang oneself from a beam
It is in overarm type structure on groove, the micro- temperature detecting resistance of the micro- temperature detecting resistance at least one upstream and at least one downstream is respectively positioned at extremely
In the opposite sides of a few micro- adding thermal resistance；At least one ambient resistance is fixed on substrate base, and is located at substrate base
Have on the side of the micro- temperature detecting resistance at least one upstream；
The structure of the Circuits System includes the scanning of microprocessor, drive circuit, signal processing circuit and photodiode
Circuit, wherein, microprocessor is connected with semiconductor laser circuit by drive circuit；Microprocessor is scanned with photodiode
Circuit connects, and photodiode scanning circuit is connected with photodiode；Microprocessor is connected with signal processing circuit, at signal
Reason circuit is connected with photodiode scanning circuit；
The optical fiber image transmission beam is arranged in some perpendicular row along the axial direction of glass tube, between glass tube and optical fiber image transmission beam
Cylinder lenses are set, often erect the head and the tail alignment of row, often erect row and be made up of some vertically disposed optical fiber；Row optical fiber pair is often erected
One group of photodiode arrangement, every group of photodiode arrangement is answered to be made up of several photodiodes, optical fiber and photosensitive two pole
Pipe connects.
The present invention fits well on metaphysis pulp cavity by being digitized design based on epimere pulp cavity CT scan data in femur
Form, and this personalized Modular femoral prosthesis of manufacture finished product are printed by three D of EBM metals, can be with each patient's
Distal femoral metaphysis pulp cavity shape matches completely, only only needs to pulp cavity burr in a small amount of art, it is possible to by personalized stock
Bone prosthese is tapped and is implanted into, and is obtained good initial fixed and long-term biology and is fixed.
Description of the drawings
Fig. 1 is the method flow of EBM metals 3D printing personalization human body femoral prosthesis oversleeve provided in an embodiment of the present invention
Figure.
Specific embodiment
For content of the invention, feature and effect of the present invention can be further appreciated that, following examples are hereby enumerated, and coordinates accompanying drawing
Describe in detail as follows：There is no the innovation of software or method in the present invention.
Refer to Fig. 1：
The present invention is achieved in that a kind of method of EBM metals 3D printing personalization human body femoral prosthesis oversleeve includes：
S101, to epimere encryption CT scan in metaphysis its part, CTdicom data are imported Mimics softwares and are rebuild
Grid model；
S102, resurfacing, fairing processing are carried out to grid model；
S103, bone three-dimensional grid model application Artificial Joint Design theory is carried out after modify；
S104, structure surface, design generate personalized articular prosthesis threedimensional model, are the rounding of a vertical shape inside model
Conical cavity, internal diameter are standardized designs, can obtain firmly by Morse taper tapers are chimeric with standardization femoral stem shank body
Assemble fixation, femoral neck, shoulder and distal end shank body are overall using standardised seriesization manufacture；
S105, personalized articular prosthesis are adjusted in shape by finite element analysis；
S106, the threedimensional model of implant is imported rapidform machine, by the 3D printing of EBM RP technology metals out.
Further, the 3D printing system bag used by the method for EBM metals 3D printing personalization human body femoral prosthesis oversleeve
Include installing rack, the print platform in installing rack and the printhead above print platform, inert gas-shielded arc welding to connect and be
System, clamping device, feeding mechanism, material supporting plate, X-axis telecontrol equipment, Y-axis telecontrol equipment, Z axis telecontrol equipment；
Described printhead is connected on XYZ three-axis moving devices, the three-dimensional coordinate of three-shaft linkage positioning printing head, is printed
Ground floor section drawing shape movement of the head in the drive lower edge target part of X, Y two axle movement mechanism, when ground floor section weldering
After closing completely, printhead is lifted Z axis motion one layer of height, repeats the printing of next layer of section；
The print platform is provided with the Z axis telecontrol equipment for driving print platform to move along Z axis, and the Z axis telecontrol equipment includes
Be arranged on the Z axis guide pad and Z axis feed screw nut's seat of print platform both sides, and be arranged on installing rack both sides Z axis lead column,
Z axis screw mandrel and Z axis motor, the Z axis guide pad are enclosed within the Z axis lead column, and the Z axis feed screw nut cover for seat is in the Z
On axial filament bar, the Z axis motor drives the Z axis screw mandrel by Z axis Timing Belt；
The X-axis telecontrol equipment for driving 3D printing head to move along X-axis, and the Y-axis that driving X-axis telecontrol equipment is moved along Y-axis
Telecontrol equipment, the X-axis telecontrol equipment include that bracing frame, X-axis motor and X-axis slide block, support frame as described above include top board and biside plate,
X-axis guide rod is provided between two side plates, and the X-axis slide block is enclosed within X-axis guide rod, and support frame as described above both sides are provided with synchronous pulley,
It is provided with X-axis Timing Belt between two synchronous pulleys, the X-axis Motor drive one of synchronous pulley is set in the X-axis slide block
There is tooth bar, the tooth bar is engaged with X-axis Timing Belt；
3D printing head is driven to include y-axis motor, Y-axis screw mandrel and located at support frame as described above along the Y-axis telecontrol equipment that Y-axis is moved
Top board on Y-axis feed screw nut, the y-axis motor directly drives Y-axis screw mandrel, and the Y-axis feed screw nut is enclosed within Y-axis screw mandrel
On, the both sides of support frame as described above are provided with Y-axis guide pad, are provided with Y-axis guide rail, the Y on the installing rack at corresponding Y-axis guide pad
Axle guide pad is coordinated with Y-axis guide rail；
Described printhead includes that melting-painting nozzle, reinforcing nozzle, the melting-painting nozzle are used for pulverized powder, the reinforcing spray
Mouth is used for spraying shot-peening or transmitting laser, and the melting-painting nozzle is centrally disposed, and the reinforcing nozzle is arranged on outside melting-painting nozzle
Enclose, the reinforcing nozzle includes 3-5 jet pipe, and each jet pipe can realize independent shot-peening by electrical system control；
Inert gas generation system in described inert gas-shielded arc welding welding system include aerogenesis unit, detector unit,
Cooling unit and controller, the aerogenesis unit include inert gas producer and connect with inside inert gas producer
Combustion powder automatic feed unit, the detector unit includes O2Gas analyzer and O2, CO gas analyzers, the cooling unit
Including least one set cooler, the O2The inlet end of gas analyzer is connected with confined space is protected by the first blower fan,
Its outlet side by pipeline and inert gas producer inlet communication, the outlet of the inert gas producer by pipeline with cold
But device connection, the cooler are connected with confined space is protected by the second blower fan, the O2, CO gas analyzers by pipe
Road is connected with cooler, the combustion powder automatic feed unit, O2Gas analyzer and O2, CO gas analyzers respectively with control
Device connects；
Second blower fan with by the pipeline of protection confined space connection on be provided be connected with controller two three
Logical electrical ball valve, the controller is according to O2, the detection of CO gas analyzers result, control two-position three way electrical ball valve is by pipe
Road is connected with confined space or inert gas producer is protected, in first blower fan and O2The pipeline of gas analyzer connection
On be provided with the gas flow sensor being connected with controller.
Further, described print platform carry out be layered printing concrete grammar include：
Step one, cladding layer shaping：
Some cladding layers, the thickness of each layer of cladding layer is formed initially with metal 3D printing technique in substrate surface
0.05-0.3mm, when cladding layer reaches certain thickness, stops 3D printing shaping；
Step 2, cladding layer heating：
Cladding layer upper surface is heated to 100 DEG C -700 DEG C by heater；
Step 3, cladding layer subregion：
Cladding layer is divided into frontier district and mesozone；Wherein frontier district is made up of external boundary region, or by external boundary region and
Inner boundary district's groups into；The external boundary region by part outline to inside parts offset the closed curves that formed of 0.5-3mm with
The closed area that the outline is formed, the inner edge battery limit (BL) offset what 0.5-3mm was formed by part Internal periphery to inside parts
The closed area that closed curve is formed with the Internal periphery；The mesozone is other regions in addition to frontier district；
Step 4, cladding layer reinforcing：
Reinforcing order is first frontier district mesozone 7 again, and the coverage rate during reinforcing of mesozone is the 0.5-0.8 of frontier district
Times；
Step 5, cladding layer continue shaping：
Some cladding layers, thickness 0.05-0.3mm are continuously formed at the top of the cladding layer after reinforcing；
Step 6, repeat step two, three, four, five are until the shaping of metal 3D printing part is completed.
Further, the metal powder used by the method for described EBM metals 3D printing personalization human body femoral prosthesis oversleeve
The preparation method at end includes：
Step one, sub-micron-sized metal powder is prepared using physical vaporous deposition or chemical vapour deposition technique first, institute
The average grain diameter of the sub-micron-sized metal powder for obtaining is 0.1-3 microns；
Step 2, by the average grain diameter of step one gained for 0.1-3 microns sub-micron-sized metal powder mix with liquid,
It is configured to metal powder slurry；The weight ratio of the sub-micron-sized metal powder liquid of above-mentioned metal powder slurry is 0.25-2.0: 1；
Step 3, in the metal powder slurry of step gained add sub-micron-sized metal powder weight 0.1-10% organic
Adhesive, is uniformly mixed；
Step 4, the slurry for being uniformly mixed step 3 granulate mechanism by centrifugal spraying granulator or press atomization
Standby balling-up shape, the 3D printing that average grain diameter is 10-50 microns metal dust.
Further, described gas flow sensor includes Circuits System, LASER Light Source, glass rotameter, substrate
Substrate, at least one micro- adding thermal resistance, the micro- temperature detecting resistance at least one upstream, the micro- temperature detecting resistance at least one downstream, at least one
Individual ambient resistance, optical fiber image transmission beam and photodiode arrangement, substrate base open up fluted, at least one micro- adding thermal resistance,
The micro- temperature detecting resistance at least one upstream, the two ends of the micro- temperature detecting resistance at least one downstream be each attached on substrate base and hang oneself from a beam in
It is in overarm type structure on groove, the micro- temperature detecting resistance of the micro- temperature detecting resistance at least one upstream and at least one downstream is respectively positioned at least
In the opposite sides of one micro- adding thermal resistance；At least one ambient resistance is fixed on substrate base, and is had positioned at substrate base
Have on of the micro- temperature detecting resistance at least one upstream；
The structure of the Circuits System includes the scanning of microprocessor, drive circuit, signal processing circuit and photodiode
Circuit, wherein, microprocessor is connected with semiconductor laser circuit by drive circuit；Microprocessor is scanned with photodiode
Circuit connects, and photodiode scanning circuit is connected with photodiode；Microprocessor is connected with signal processing circuit, at signal
Reason circuit is connected with photodiode scanning circuit；
The optical fiber image transmission beam is arranged in some perpendicular row along the axial direction of glass tube, between glass tube and optical fiber image transmission beam
Cylinder lenses are set, often erect the head and the tail alignment of row, often erect row and be made up of some vertically disposed optical fiber；Row optical fiber pair is often erected
One group of photodiode arrangement, every group of photodiode arrangement is answered to be made up of several photodiodes, optical fiber and photosensitive two pole
Pipe connects.
In the present invention, heating-up temperature can be set to by different predetermined values according to the different attribute (as moulding) of material,
Shock peening ability strengthen part consistency in terms of so preferably can be played；
Different reinforcing parameters can be taken (including pressure, number of times, speed, shot-peening quality in the diverse location of cladding layer
Size, translational speed, moving interval etc.), or the reinforcing order according to certain order adjustment cladding layer diverse location, and then
Reach and the property and size of the residual stress of inside parts various location is adjusted by adjusting the technique that strengthens, so as to reach
Ensure the effect of drip molding precision while consistency is increased.
The operation principle of gas flow sensor of the present invention is：What the LASER Light Source being arranged on top base was launched swashs
Light beam is projected along the axial direction of tapered glass tube, and directive is located at the reflector on float, is reflected by reflector after turning 90 degrees partially, is shone
It is mapped on the optical fiber with float in each perpendicular row of sustained height, and conducts to corresponding photodiode arrangement；With floating
Sub moves up and down, and laser beam can be irradiated on the optical fiber of diverse location, so that corresponding photodiode receives light；
Photodiode is scanned successively by photodiode scanning circuit, with the carrying out of scanning, the state of each photodiode
Information (whether receiving light) is sequentially output signal processing circuit, and the signal (status information of each photodiode) is passed through
Microprocessor is sent into after signal processing circuit process, microprocessor calculates the position of float according to each point light intensity, further according to phase
It (is prior art according to the corresponding flow of the position calculation of float, the present invention is right that the flow formula of pass is converted into corresponding flow
This is repeated no more without improvement), during concrete application, microprocessor is connected with remote computer or display device by data wire, from
And can remotely monitor flow, it is possible to realize the several functions such as record, integrating, automatic control.
The present invention fits well on metaphysis pulp cavity by being digitized design based on epimere pulp cavity CT scan data in femur
Form, and this personalized Modular femoral prosthesis of manufacture finished product are printed by three D of EBM metals, can be with each patient's
Distal femoral metaphysis pulp cavity shape matches completely, only only needs to pulp cavity burr in a small amount of art, it is possible to by personalized stock
Bone prosthese is tapped and is implanted into, and is obtained good initial fixed and long-term biology and is fixed.
The above is only to presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention,
Every technical spirit according to the present invention is belonged to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (4)
1. the system of a kind of EBM metals 3D printing personalization human body femoral prosthesis oversleeve, it is characterised in that including installing rack, set
In the print platform in installing rack and the printhead above print platform, inert gas-shielded arc welding welding system, clamping device,
Feeding mechanism, material supporting plate, X-axis telecontrol equipment, Y-axis telecontrol equipment, Z axis telecontrol equipment；
Printhead is connected on XYZ three-axis moving devices, the three-dimensional coordinate of three-shaft linkage positioning printing head；Print platform is provided with drive
The Z axis telecontrol equipment that dynamic print platform is moved along Z axis, Z axis telecontrol equipment include the Z axis guide pad for being arranged on print platform both sides
With Z axis feed screw nut's seat, and Z axis lead column, Z axis screw mandrel and the Z axis motor of installing rack both sides is arranged on, Z axis guide pad set
In the Z axis lead column, on the Z axis screw mandrel, the Z axis motor passes through Z axis Timing Belt to the Z axis feed screw nut cover for seat
Drive the Z axis screw mandrel；
X-axis telecontrol equipment includes that bracing frame, X-axis motor and X-axis slide block, support frame as described above include top board and biside plate, biside plate
Between be provided with X-axis guide rod, the X-axis slide block is enclosed within X-axis guide rod, and support frame as described above both sides are provided with synchronous pulley, synchronous pulley
Between be provided with X-axis Timing Belt, the one of synchronous pulley of the X-axis Motor drive, the X-axis slide block is provided with tooth bar, described
Tooth bar is engaged with X-axis Timing Belt；
Y-axis telecontrol equipment includes y-axis motor, Y-axis screw mandrel and the Y-axis feed screw nut on the top board of support frame as described above, the Y
Spindle motor directly drives Y-axis screw mandrel, and the Y-axis feed screw nut is enclosed within Y-axis screw mandrel, and the both sides of support frame as described above are provided with Y-axis and lead
To block, on the installing rack, at corresponding Y-axis guide pad, Y-axis guide rail is provided with, the Y-axis guide pad is coordinated with Y-axis guide rail；
Printhead includes that melting-painting nozzle, reinforcing nozzle, the melting-painting nozzle are used for pulverized powder, and the reinforcing nozzle is used for spraying
Shot-peening or transmitting laser, the melting-painting nozzle are centrally disposed, and the reinforcing nozzle is arranged on melting-painting nozzle periphery, the reinforcing
Nozzle includes 3-5 jet pipe, and each jet pipe realizes independent shot-peening by electrical system control；
Inert gas generation system in inert gas-shielded arc welding welding system include aerogenesis unit, detector unit, cooling unit with
And controller, the aerogenesis unit includes inert gas producer and automatic with the combustion powder connected inside inert gas producer
Feed unit, the detector unit include O2Gas analyzer and O2, CO gas analyzers, the cooling unit includes at least one
Group cooler, the O2The inlet end of gas analyzer is connected with confined space is protected by the first blower fan, and outlet side passes through
Pipeline and inert gas producer inlet communication, the outlet of the inert gas producer are connected with cooler by pipeline, institute
State cooler to connect with confined space is protected by the second blower fan, the O2, CO gas analyzers are by pipeline and cooler
Connection, the combustion powder automatic feed unit, O2Gas analyzer and O2, CO gas analyzers are connected with controller respectively；Institute
Stating the second blower fan, the two-position three way electrical ball valve being connected with controller, control is provided with the pipeline of confined space connection with protecting
Two-position three way electrical ball valve processed is connected with confined space or inert gas producer is protected by pipeline, in first blower fan
With O2It is provided with, on the pipeline of gas analyzer connection, the gas flow sensor being connected with controller；
The using method of described EBM metals 3D printing personalization human body femoral prosthesis oversleeve system includes：
Step one, to epimere encryption CT scan in metaphysis its part, CTdicom data are imported Mimics softwares and rebuild net
Lattice model；
Step 2, resurfacing, fairing processing are carried out to grid model；
Step 3, bone three-dimensional grid model application Artificial Joint Design theory is carried out after modify；
Step 4, structure surface, design generate personalized articular prosthesis threedimensional model, are the inverted cone of a vertical shape inside model
Shape cavity, chimeric by Morse taper tapers with femoral stem shank body, femoral neck, shoulder and distal end shank body are using standardization
Seriation manufacture is overall；
Step 5, personalized articular prosthesis are adjusted in shape by finite element analysis；
Step 6, the threedimensional model of implant is imported rapidform machine, by the 3D printing of EBM RP technology metals out.
2. the system of EBM metals 3D printing as claimed in claim 1 personalization human body femoral prosthesis oversleeve, it is characterised in that
3D printing carries out being layered the concrete grammar of printing to be included：
Step one, cladding layer shaping：
Some cladding layers, thickness 0.05- of each layer of cladding layer is formed initially with metal 3D printing technique in substrate surface
0.3mm, when cladding layer reaches certain thickness, stops 3D printing shaping；
Step 2, cladding layer heating：
Cladding layer upper surface is heated to 100 DEG C -700 DEG C by heater；
Step 3, cladding layer subregion：
Cladding layer is divided into frontier district and mesozone；Wherein frontier district is made up of external boundary region, or by external boundary region and inner edge
Battery limit (BL) is constituted；The external boundary region is outer with this to the closed curve that inside parts skew 0.5-3mm is formed by part outline
The closed area that profile is formed, the inner edge battery limit (BL) offset the closure that 0.5-3mm is formed by part Internal periphery to inside parts
The closed area that curve is formed with the Internal periphery；The mesozone is other regions in addition to frontier district；
Step 4, cladding layer reinforcing：
Reinforcing order is first frontier district mesozone 7 again, and the coverage rate during reinforcing of mesozone is 0.5-0.8 times of frontier district；
Step 5, cladding layer continue shaping：
Some cladding layers, thickness 0.05-0.3mm are continuously formed at the top of the cladding layer after reinforcing；
Step 6, repeat step two, three, four, five are until the shaping of metal 3D printing part is completed.
3. the system of EBM metals 3D printing as claimed in claim 1 personalization human body femoral prosthesis oversleeve, it is characterised in that
The preparation method of the metal dust used by described EBM metals 3D printing personalization human body femoral prosthesis oversleeve system includes：
Step one, sub-micron-sized metal powder is prepared using physical vaporous deposition or chemical vapour deposition technique first, gained
The average grain diameter of sub-micron-sized metal powder is 0.1-3 microns；
Step 2, the sub-micron-sized metal powder by the average grain diameter of step one gained for 0.1-3 microns are mixed with liquid, are prepared
Into metal powder slurry；The weight ratio of the sub-micron-sized metal powder liquid of above-mentioned metal powder slurry is 0.25-2.0: 1；
Step 3, the organic for adding sub-micron-sized metal powder weight 0.1-10% in the metal powder slurry of step gained
Agent, is uniformly mixed；
Step 4, the slurry for being uniformly mixed step 3 are prepared into by centrifugal spraying granulator or press atomization comminutor
Spherical shape, the 3D printing that average grain diameter is 10-50 microns metal dust.
4. the system of EBM metals 3D printing as claimed in claim 1 personalization human body femoral prosthesis oversleeve, it is characterised in that
Described gas flow sensor includes Circuits System, LASER Light Source, glass rotameter, substrate base, at least one micro-
Adding thermal resistance, the micro- temperature detecting resistance at least one upstream, the micro- temperature detecting resistance at least one downstream, at least one ambient resistance, optical fiber
Coherent fiber bundle and photodiode arrangement, substrate base open up fluted, at least one micro- adding thermal resistance, at least one upstream micrometering
Warm resistance, the two ends of the micro- temperature detecting resistance at least one downstream are each attached on substrate base and hang oneself from a beam and tie in overarm type on groove
Structure, the micro- temperature detecting resistance of the micro- temperature detecting resistance at least one upstream and at least one downstream are located at least one micro- adding thermal resistance respectively
In opposite sides；At least one ambient resistance is fixed on substrate base, and it is micro- with least one upstream to be located at substrate base
On the side of temperature detecting resistance；
The structure of the Circuits System includes microprocessor, drive circuit, signal processing circuit and photodiode scanning circuit,
Wherein, microprocessor is connected with semiconductor laser circuit by drive circuit；Microprocessor and photodiode scanning circuit
Connection, photodiode scanning circuit are connected with photodiode；Microprocessor is connected with signal processing circuit, signal transacting electricity
Road is connected with photodiode scanning circuit；
The optical fiber image transmission beam is arranged in some perpendicular row along the axial direction of glass tube, arranges between glass tube and optical fiber image transmission beam
Cylinder lenses, often erect the head and the tail alignment of row, often erect row and are made up of some vertically disposed optical fiber；Row optical fiber corresponding one is often erected
Group photodiode arrangement, every group of photodiode arrangement are made up of several photodiodes, and optical fiber is connected with photodiode
Connect.
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| CN105997313B (en) * | 2016-05-03 | 2017-10-27 | 柴凡 | External prosthese of 3D printing breast and preparation method thereof |
| CN105796211B (en) * | 2016-05-19 | 2018-09-18 | 北京爱康宜诚医疗器材有限公司 | Prosthetic component and its manufacturing method |
| CN107334544B (en) * | 2017-02-13 | 2019-08-13 | 上海威宁整形制品有限公司 | A method of meeting the expander of biomethanics using the customization of laser scanning, finite element analysis and 3D printing technique |
| CN107638237A (en) * | 2017-10-27 | 2018-01-30 | 吉林大学 | Implanting artificial limb attachment means |
| US11000360B2 (en) | 2018-09-14 | 2021-05-11 | Onkos Surgical, Inc. | Systems and methods for attaching soft tissue to an implant |
| CN110772359B (en) * | 2019-10-15 | 2022-02-01 | 佛山市第一人民医院（中山大学附属佛山医院） | Manufacturing method of joint prosthesis and manufacturing method of test mold thereof |
| CN112891029A (en) * | 2021-01-15 | 2021-06-04 | 常州华众生物科技有限公司 | 3D printing biological knee joint prosthesis and preparation method thereof |
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