CN110053198A - A kind of increasing material manufacturing method of prosthese - Google Patents
A kind of increasing material manufacturing method of prosthese Download PDFInfo
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- CN110053198A CN110053198A CN201910115112.4A CN201910115112A CN110053198A CN 110053198 A CN110053198 A CN 110053198A CN 201910115112 A CN201910115112 A CN 201910115112A CN 110053198 A CN110053198 A CN 110053198A
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- 239000000463 material Substances 0.000 title claims abstract description 98
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 78
- 238000002347 injection Methods 0.000 claims abstract description 84
- 239000007924 injection Substances 0.000 claims abstract description 84
- 238000000034 method Methods 0.000 claims abstract description 51
- 238000005516 engineering process Methods 0.000 claims abstract description 44
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 29
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 24
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 238000002591 computed tomography Methods 0.000 claims abstract description 13
- 238000003754 machining Methods 0.000 claims abstract description 13
- 238000013461 design Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 210000000988 bone and bone Anatomy 0.000 claims description 65
- 239000000843 powder Substances 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 13
- 230000003746 surface roughness Effects 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 238000013178 mathematical model Methods 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 3
- 210000003484 anatomy Anatomy 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 description 10
- 229920004695 VICTREX™ PEEK Polymers 0.000 description 4
- 238000005422 blasting Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- -1 cochrome Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 206010061728 Bone lesion Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- CGMRCMMOCQYHAD-UHFFFAOYSA-J dicalcium hydroxide phosphate Chemical compound [OH-].[Ca++].[Ca++].[O-]P([O-])([O-])=O CGMRCMMOCQYHAD-UHFFFAOYSA-J 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of increasing material manufacturing method of prosthese, with improve artificial skelecton technology mechanical strength, high simulation quality, in terms of performance.The increasing material manufacturing method of the prosthese, including high simulation mold preparation process, precise machining process, the injection forming process and accurate cutting technique；Using the increasing material manufacturing method of the prosthese, for determining patient, high emulation data is obtained using CT scan technology at particular anatomy doctors and patients position, design high emulation injection mold；By metal increases material manufacturing technology, high emulation injection mold is prepared；Using traditional handicraft, the machining accuracy of injection mold is improved；Using the injection forming process, the preparation of high intensity PEEK material injection part is completed；By the accurate cutting technique of surgical navigational plate, the personalization for being suitable for patient, high intensity, high-precision artificial skelecton are obtained；The present invention can obviously improve the deficiency of existing artificial skelecton manufacturing technology, meet the individual demand of patient, improve the quality of life of patient.
Description
Technical field
The present invention relates to manufacturing field and medical prosthesis field, in particular to the increasing material manufacturing method of a kind of prosthese.
Background technique
Well-known: with the development of modern medicine, artificial skelecton plays key player in medical field, can part
A series of diseases relevant to bone such as people's bone treatment fracture, bone defect, bone lesion, head necrosis are substituted, are the health of patient
Multiple and involvement normal life, creating may.Artificial skelecton source is broadly divided into two major classes, inorganic non-metallic artificial skelecton (hydroxyl
Apatite, engineering plastics etc.) and metal alloy artificial skelecton (titanium alloy, cochrome etc.).Inorganic non-metallic artificial skelecton
Biocompatibility is preferable, but its mechanical strength is poor；The mechanical strength of metal alloy bone is high, substantially exceeds the power of bone tissue
Learn intensity, surrounding bony tissue easy to wear；In addition, their common deficiency is that fidelity is not high, be not suitable for particular individual, specific
The personalized transplanting of the bone at position.Therefore, on the whole, the technology of preparing of existing artificial skelecton, it is difficult to meet of patient
Property medical demand.
Increases material manufacturing technology (i.e. Quick-forming or 3D printing technique) is after decades of development, it can be achieved that metal, non-gold
The preparation of the multiple materials such as category, ceramic material, composite material and biomaterial and structural member.According to processing method, can be divided into
Sintered powder technique (SLS), powder melts technology (SLM), Laser Near forming technique (LENS) and extrusion fusion technology (FDM)
Deng.Therefore, the preparation of structure is complicated device has not been the difficult point of increases material manufacturing technology.
The injection forming process belongs to one kind of conventional machining process, is usually used in the forming of nonmetallic materials；Utilize injection mould
Has the mass production, it can be achieved that plasthetics；Moreover, the intensity of nonmetallic injection molding device, hence it is evident that be higher than existing increasing material manufacturing
The intensity of device obtained.Injection molding process, which mainly passes through the raw material of melting pressurize, inject, is cooling, being detached from etc., to be grasped
Make, makes semi-finished articles of certain shapes, including molding-filling-(gas is auxiliary, and water is auxiliary) pressure maintaining-cooling-die sinking-demoulding etc.
6 stages.Therefore, the quality (dimensional accuracy, surface smoothness, stomata and design of runner etc.) of injection mold, determines note
The performance of plastic.The processing of injection mold at this stage, or traditional casting, vehicle, milling, plane, mill, artificial etc. are used, because
This, it is difficult to prepare the mold of labyrinth.But the techniques such as traditional vehicle, milling, plane, mill, plating, artificial, note can be improved
The surface smoothness of mould.
Although existing patent (108245288 A of application publication number CN), using the FDM technology of increasing material manufacturing, prepares radius
The 3D printing prosthese of distal tumor.But by the technical restriction of FDM, the intensity and surface smoothness of prosthese not necessarily can
Meets the needs of patient.
Therefore, it is necessary to innovate the prior art, bloom is prepared in conjunction with traditional processing technology using increases material manufacturing technology
The bone injection mold of cleanliness, labyrinth realizes high-intensitive high emulation, the preparation of personalized artificial skelecton.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of increasing material manufacturing methods of prosthese, to improve artificial skelecton skill
Art mechanical strength, high simulation quality, in terms of performance.
The technical solution adopted by the present invention to solve the technical problems is: a kind of increasing material manufacturing method of prosthese, including with
Lower step:
1) high simulation mold preparation process；
The high simulation mold preparation process is comprising steps of be to obtain sick body bone tissue high definition CT using CT scan technology
Partial data bone tissue mathematical model is established in data, bone tissue data reparation；Auxiliary mould runner design forms casting mould
Figure；With increases material manufacturing technology, bone injection mold is prepared；
2) precise machining process；
The precise machining process is using one or more of vehicle, milling, plane, mill and plating, in bone injection mold
The surface of chamber is handled, so that the surface smoothness of bone injection mold reaches technical need；
3) the injection forming process；
The injection forming process utilizes polyether-ether-ketone (PEEK) material and its modified material, in increasing material manufacturing preparation, essence
In the high simulation skeleton mold of close processing technology processing, injection molded；
4) accurate cutting technique；
According to subjects bones' damaged condition, complete bone prosthesis is precisely cut, obtains the prosthese that patient needs
Part.
The high simulation mold preparation process in step 1) the following steps are included:
A, the kneed high-precision three-dimensional initial data of patient is obtained using CT or MRI, is established using reverse engineering approach
The threedimensional model of bone；
B, the bone threedimensional model obtained according to step a, selection polyether-ether-ketone is manufacture material, using increasing material manufacturing skill
Art, 3D printing technique, conventionally manufactured or triplicity method manufacture the mold of bone prosthesis.
Specifically, the increases material manufacturing technology includes sintered powder technique (SLS), powder melts technology (SLM), Laser Near
One or more of forming technique (LENS).
Further, the increasing material manufacturing material of the injection mold includes aluminium alloy, titanium alloy, cochrome, stainless steel
It is one or more of in silk material.
Further, the increasing material manufacturing method of a kind of prosthese, includes the following steps:
S1, by the CT scan to subjects bones, obtain and repair CT data, establish complete skeleton model；
S2, it is based on whole skeleton model, in conjunction with the injection hole of injection mold, design is suitable for the mathematical model of increasing material manufacturing；
S3, using metal increases material manufacturing technology, prepare metal injection molded mold；
S4, in conjunction with a variety of traditional fine-processing techniques, the outer surface and inner cavity of injection mold are handled so that injection molding
The dimensional accuracy and surface smoothness of mold reach technical requirements；
S5, it is required according to technique, adjusts molding proces s parameters, PEEK and its modified material are injected in above-mentioned mold；It is logical
It crosses injection molding and obtains complete bone prosthesis；
S6, according to subjects bones' damaged condition, complete bone prosthesis is precisely cut, obtain patient need vacation
Body portion.
Further, molding proces s parameters are as follows in step S5:
Screw rod selection: draw ratio 18:1~24:1
Screw speed: 50~150rpm
Injection pressure: 5~15MPa
Keep pressure: 4~15MPa
Backside pressure: 0.2~5MPa
Injection temperature: latter 350~380 DEG C, in 360~390 DEG C, first 370~420 DEG C, 370~420 DEG C of nozzle
Mold temperature: 150~250 DEG C.
Further, the complete bone prosthesis prepared in step S5, tensile strength are greater than 90MPa, tensile elasticity mould
Amount is greater than 2.6Gpa, and bending strength is greater than 130MPa, and bending elastic modulus is greater than 3.5Gpa, surface roughness Ra: 0.001~
0.02。
The beneficial effects of the present invention are: the increasing material manufacturing method of prosthese of the present invention, is the patient for determination,
Particular anatomy doctors and patients position obtains high emulation data using CT scan technology, designs high emulation injection mold；Increased by metal
Material manufacturing technology prepares high emulation injection mold；Using traditional handicraft, the machining accuracy of injection mold is improved；Using being molded into
Shape technique completes the preparation of high intensity PEEK material injection part；By the accurate cutting technique of surgical navigational plate, obtains and be suitable for suffering from
The personalization of person, high intensity, high-precision artificial skelecton.The present invention can obviously improve the deficiency of existing artificial skelecton manufacturing technology,
The individual demand for meeting patient improves the quality of life of patient.
(1) for the bone affected part of particular individual, high emulation artificial skelecton is prepared, therefore, the resemblance and original of bone
There is bone similarity high；
(2) metal increasing material manufacturing can quickly preparation structure auxiliary mold, be conducive to save mold preparation time；This
Outside, the die shape fidelity prepared is relatively high；
(3) by conventional machining process, it can effectively reduce the surface roughness of increasing material manufacturing device, to improve injection mould
The finish of tool；
(4) by Shooting Technique, the technical indicators such as intensity and the finish of PEEK device can be greatly improved；Compare and
Speech, by PEEK device prepared by increasing material manufacturing FDM technique, the technical indicators such as intensity and finish are not able to satisfy operation and need
It asks.
(5) in terms of material selection, intensity, biocompatibility, wearability of PEEK material etc., compared with human skeleton
It is close, be conducive to patient's early recovery, improve the quality of living.
Detailed description of the invention
Fig. 1 is the process flow chart of the increasing material manufacturing method of prosthese in the embodiment of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
A kind of increasing material manufacturing method of prosthese of the present invention, for determining patient, at particular anatomy doctors and patients position,
Using CT scan technology, high emulation data are obtained, design high emulation injection mold；By metal increases material manufacturing technology, preparation is high
Emulate injection mold；Using traditional handicraft, the machining accuracy of injection mold is improved；Using the injection forming process, complete high-intensitive
The preparation of PEEK material injection part；By the accurate cutting technique of surgical navigational plate, obtains and be suitable for the personalized, high-strength of patient
Degree, high-precision artificial skelecton.
A kind of increasing material manufacturing method of prosthese, comprising the following steps:
1) high simulation mold preparation process；
The high simulation mold preparation process is comprising steps of be to obtain sick body bone tissue high definition CT using CT scan technology
Partial data bone tissue mathematical model is established in data, bone tissue data reparation；Auxiliary mould runner design forms casting mould
Figure；With increases material manufacturing technology, bone injection mold is prepared；
2) precise machining process；
The precise machining process is using one or more of vehicle, milling, plane, mill and plating, in bone injection mold
The surface of chamber is handled, so that the surface smoothness technical need of bone injection mold；
3) the injection forming process；
The injection forming process utilizes polyether-ether-ketone (PEEK) material and its modified material, in increasing material manufacturing preparation, essence
In the high simulation skeleton mold of close processing technology processing, injection molded；
4) accurate cutting technique；
According to subjects bones' damaged condition, complete bone prosthesis is precisely cut, obtains the prosthese that patient needs
Part.
Further, in step 1) high simulation mold preparation process the following steps are included:
A, the kneed high-precision three-dimensional initial data of patient is obtained using CT or MRI, is established using reverse engineering approach
The threedimensional model of bone；
B, according to the threedimensional model of the step a vertical bone obtained, selection polyether-ether-ketone is manufacture material, using increasing material manufacturing
Technology, 3D printing technique, conventionally manufactured or triplicity method manufacture the mold of bone prosthesis.
Preferably, the increases material manufacturing technology includes sintered powder technique (SLS), powder melts technology (SLM), Laser Near
One or more of forming technique (LENS).
Preferably, the increasing material manufacturing material of the injection mold includes aluminium alloy, titanium alloy, cochrome, stainless steel wire
It is one or more of in material.
Further, the increasing material manufacturing method of a kind of prosthese, includes the following steps:
S1, by the CT scan to subjects bones, obtain and repair CT data, establish complete skeleton model；
S2, it is based on whole skeleton model, in conjunction with the injection hole of injection mold, design is suitable for the mathematical model of increasing material manufacturing；
S3, using metal increases material manufacturing technology, prepare metal injection molded mold；
S4, in conjunction with a variety of traditional fine-processing techniques, the outer surface and inner cavity of injection mold are handled so that injection molding
The dimensional accuracy and surface smoothness of mold reach technical requirements；
S5, it is required according to technique, adjusts molding proces s parameters, PEEK and its modified material are injected in above-mentioned mold；It is logical
It crosses injection molding and obtains complete bone prosthesis；
S6, according to subjects bones' damaged condition, complete bone prosthesis is precisely cut, obtain patient need vacation
Body portion.
Preferably, molding proces s parameters are as follows in step S5:
Screw rod selection: draw ratio 18:1~24:1
Screw speed: 50~150rpm
Injection pressure: 5~15MPa
Keep pressure: 4~15MPa
Backside pressure: 0.2~5MPa
Injection temperature: latter 350~380 DEG C, in 360~390 DEG C, first 370~420 DEG C, 370~420 DEG C of nozzle
Mold temperature: 150~250 DEG C.
Specifically, the complete bone prosthesis prepared in step S5, tensile strength is greater than 90MPa, tensile modulus of elasticity
Greater than 2.6Gpa, bending strength is greater than 130MPa, and bending elastic modulus is greater than 3.5Gpa, surface roughness Ra: 0.001~
0.02。
Preferably, high-precision CT scan technology realizes that the high-precision modeling in bone affected part combines the position of injection molding channel to set
Meter obtains the high accuracy number model for being suitable for increasing material manufacturing.
Preferably, the sintered powder technique (SLS) of increasing material manufacturing prepares metal using the spherical powder of Stainless steel 316 L
Injection mold.
Preferably, it to increasing material manufacturing injection mold obtained, is processed by shot blasting, surface roughness Ra 0.001；It is logical
Electroplating technology is crossed, surface roughness is further decreased.
Preferably, using the PEEK material of VICTREX company, injection molded High Precision Simulation artificial skelecton.
Preferably, using the positioning function of surgical navigational template, cut point and cut surface are determined, acquisition can be used for transplanting hand
The high-precision height of art emulates PEEK artificial skelecton
Preferably, molding proces s parameters:
Screw rod selection: draw ratio 18:1
Screw speed: 50rpm
Injection pressure: 5MPa
Keep pressure: 4MPa
Backside pressure: 0.2MPa
Injection temperature: latter 350 DEG C, in 360 DEG C, first 370 DEG C, 370 DEG C of nozzle
Mold temperature: 150 DEG C
Its tensile strength 90MPa, tensile modulus of elasticity 2.6Gpa, bending strength 130MPa, bending elastic modulus 3.5Gpa
It is that the present invention obtains the utility model has the advantages that
(1) for the bone affected part of particular individual, high emulation artificial skelecton is prepared, therefore, the resemblance and original of bone
There is bone similarity high；
(2) metal increasing material manufacturing can quickly preparation structure auxiliary mold, be conducive to save mold preparation time；This
Outside, the die shape fidelity prepared is relatively high；
(3) by conventional machining process, it can effectively reduce the surface roughness of increasing material manufacturing device, to improve injection mould
The finish of tool；
(4) by Shooting Technique, the technical indicators such as intensity and the finish of PEEK device can be greatly improved；Compare and
Speech, by PEEK device prepared by increasing material manufacturing FDM technique, the technical indicators such as intensity and finish are not able to satisfy operation and need
It asks.
(5) in terms of material selection, intensity, biocompatibility, wearability of PEEK material etc., compared with human skeleton
It is close, be conducive to patient's early recovery, improve the quality of living.
Embodiment 1:
Preferably, high-precision CT scan technology realizes that the high-precision modeling in bone affected part combines the position of injection molding channel to set
Meter obtains the high accuracy number model for being suitable for increasing material manufacturing.
Preferably, the sintered powder technique (SLS) of increasing material manufacturing prepares metal using the spherical powder of Stainless steel 316 L
Injection mold.
Preferably, it to increasing material manufacturing injection mold obtained, is processed by shot blasting, surface roughness Ra 0.005；It is logical
Electroplating technology is crossed, surface roughness is further decreased.
Preferably, using the PEEK material of VICTREX company, injection molded High Precision Simulation artificial skelecton.
Preferably, using the positioning function of surgical navigational template, cut point and cut surface are determined, acquisition can be used for transplanting hand
The high-precision height of art emulates PEEK artificial skelecton.
Preferably, molding proces s parameters:
Screw rod selection: draw ratio 20:1
Screw speed: 75rpm
Injection pressure: 7.5MPa
Keep pressure: 4.5MPa
Backside pressure: 2MPa
Injection temperature: latter 350 DEG C, in 380 DEG C, first 390 DEG C, 390 DEG C of nozzle
Mold temperature: 170 DEG C
Its tensile strength 95MPa, tensile modulus of elasticity 2.7Gpa, bending strength 136MPa, bending elastic modulus 3.6Gpa.
Embodiment 2
Preferably, high-precision CT scan technology realizes that the high-precision modeling in bone affected part combines the position of injection molding channel to set
Meter obtains the high accuracy number model for being suitable for increasing material manufacturing.
Preferably, the sintered powder technique (SLS) of increasing material manufacturing prepares metal using the spherical powder of Stainless steel 316 L
Injection mold.
Preferably, it to increasing material manufacturing injection mold obtained, is processed by shot blasting, surface roughness Ra 0.01；It is logical
Electroplating technology is crossed, surface roughness is further decreased.
Preferably, using the PEEK material of VICTREX company, injection molded High Precision Simulation artificial skelecton.
Preferably, using the positioning function of surgical navigational template, cut point and cut surface are determined, acquisition can be used for transplanting hand
The high-precision height of art emulates PEEK artificial skelecton.
Preferably, molding proces s parameters:
Screw rod selection: draw ratio 22:1
Screw speed: 100rpm
Injection pressure: 10MPa
Keep pressure: 8MPa
Backside pressure: 3MPa
Injection temperature: latter 360 DEG C, in 370 DEG C, first 390 DEG C, 400 DEG C of nozzle
Mold temperature: 200 DEG C
Its tensile strength 98MPa, tensile modulus of elasticity 2.8Gpa, bending strength 139MPa, bending elastic modulus 3.6Gpa.
Embodiment 3
Preferably, high-precision CT scan technology realizes the high-precision modeling in bone affected part；It is set in conjunction with the position of injection molding channel
Meter obtains the high accuracy number model for being suitable for increasing material manufacturing.
Preferably, the sintered powder technique (SLS) of increasing material manufacturing prepares metal using the spherical powder of Stainless steel 316 L
Injection mold.
Preferably, it to increasing material manufacturing injection mold obtained, is processed by shot blasting, surface roughness Ra 0.015；It is logical
Electroplating technology is crossed, surface roughness is further decreased.
Preferably, using the PEEK material of VICTREX company, injection molded High Precision Simulation artificial skelecton.
Preferably, using the positioning function of surgical navigational template, cut point and cut surface are determined, acquisition can be used for transplanting hand
The high-precision height of art emulates PEEK artificial skelecton.
Preferably, molding proces s parameters:
Screw rod selection: draw ratio 24:1
Screw speed: 150rpm
Injection pressure: 15MPa
Keep pressure: 15MPa
Backside pressure: 5MPa
Injection temperature: latter 350 DEG C, in 380 DEG C, first 420 DEG C, 420 DEG C of nozzle
Mold temperature: 250 DEG C
Its tensile strength 102MPa, tensile modulus of elasticity 2.9Gpa, bending strength 141MPa, bending elastic modulus
3.7Gpa。
Claims (7)
1. a kind of increasing material manufacturing method of prosthese, which comprises the following steps:
1) high simulation mold preparation process；
The high simulation mold preparation process comprising steps of be to obtain sick body bone tissue high definition CT data using CT scan technology,
Partial data bone tissue mathematical model is established in bone tissue data reparation；Auxiliary mould runner design forms casting mould figure；With
Increases material manufacturing technology prepares bone injection mold；
2) precise machining process；
The precise machining process is using one or more of vehicle, milling, plane, mill and plating, to bone injection mold cavity
Surface is handled, so that the surface smoothness of bone injection mold reaches technical need；
3) the injection forming process；
The injection forming process utilizes polyether-ether-ketone (PEEK) material and its modified material, adds in increasing material manufacturing preparation, precision
In the high simulation skeleton mold of work process, injection molded；
4) accurate cutting technique；
According to subjects bones' damaged condition, complete bone prosthesis is precisely cut, obtains the prosthetic part that patient needs.
2. a kind of increasing material manufacturing method of prosthese as described in claim 1, it is characterised in that: the high simulation mold in step 1)
Preparation process the following steps are included:
A, the kneed high-precision three-dimensional initial data of patient is obtained using CT or MRI, establishes bone using reverse engineering approach
Threedimensional model；
B, according to the threedimensional model of the step a vertical bone obtained, selection polyether-ether-ketone is prosthese manufacture material, using increasing material manufacturing
Technology, 3D printing technique, conventionally manufactured or triplicity method manufacture the mold of bone prosthesis.
3. a kind of increasing material manufacturing method of prosthese injection mold as described in claim 1, it is characterised in that: the increasing material manufacturing
Technology includes one of sintered powder technique (SLS), powder melts technology (SLM), Laser Near forming technique (LENS) or several
Kind.
4. a kind of increasing material manufacturing method of prosthese injection mold as claimed in claim 3, it is characterised in that: the injection mold
Increasing material manufacturing material include aluminium alloy, it is titanium alloy, cochrome, one or more of in stainless steel silk material.
5. a kind of increasing material manufacturing method of prosthese as described in claim 1, characterized by the following steps:
S1, by the CT scan to subjects bones, obtain and repair CT data, establish complete skeleton model；
S2, it is based on skeleton model, in conjunction with the injection hole of injection mold, design is suitable for the mathematical model of increasing material manufacturing；
S3, using metal increases material manufacturing technology, prepare metal injection molded mold；
S4, in conjunction with a variety of traditional fine-processing techniques, the outer surface and inner cavity of injection mold are handled, so that injection mold
Dimensional accuracy and surface smoothness reach technical requirements；
S5, it is required according to technique, adjusts molding proces s parameters, PEEK and its modified material are injected in above-mentioned mold；Pass through note
It is moulded into type and obtains complete bone prosthesis；
S6, according to subjects bones' damaged condition, complete bone prosthesis is precisely cut, obtain patient need prosthese portion
Point.
6. a kind of increasing material manufacturing method of prosthese as claimed in claim 5, it is characterised in that: molding proces s parameters in step S5
It is as follows:
Screw rod selection: draw ratio 18:1~24:1
Screw speed: 50~150rpm
Injection pressure: 5~15MPa
Keep pressure: 4~15MPa
Backside pressure: 0.2~5MPa
Injection temperature: latter 350~380 DEG C, in 360~390 DEG C, first 370~420 DEG C, 370~420 DEG C of nozzle
Mold temperature: 150~250 DEG C.
7. a kind of increasing material manufacturing method of prosthese as claimed in claim 6, it is characterised in that: what is prepared in step S5 is complete
Bone prosthesis, tensile strength are greater than 90MPa, and tensile modulus of elasticity is greater than 2.6Gpa, and bending strength is greater than 130MPa, are bent bullet
Property modulus be greater than 3.5Gpa, surface roughness Ra: 0.001~0.02.
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| CN111904665A (en) * | 2020-07-22 | 2020-11-10 | 四川大学 | Bone increment auxiliary system, design method and bone increment auxiliary device |
| CN113429619A (en) * | 2021-06-08 | 2021-09-24 | 广西民族大学 | Surface-modified porous polyether-ether-ketone artificial skeleton and preparation method thereof |
| CN115227455A (en) * | 2022-06-30 | 2022-10-25 | 昆明理工大学 | Method for biomedical implantation by using cobalt-chromium alloy |
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| CN113429619A (en) * | 2021-06-08 | 2021-09-24 | 广西民族大学 | Surface-modified porous polyether-ether-ketone artificial skeleton and preparation method thereof |
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| CN115227455A (en) * | 2022-06-30 | 2022-10-25 | 昆明理工大学 | Method for biomedical implantation by using cobalt-chromium alloy |
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