CN107647941A - A kind of metal bone trabecula and the skeleton implant for including the metal bone trabecula - Google Patents

A kind of metal bone trabecula and the skeleton implant for including the metal bone trabecula Download PDF

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Publication number
CN107647941A
CN107647941A CN201711069553.2A CN201711069553A CN107647941A CN 107647941 A CN107647941 A CN 107647941A CN 201711069553 A CN201711069553 A CN 201711069553A CN 107647941 A CN107647941 A CN 107647941A
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China
Prior art keywords
bone trabecula
metal bone
micro
metal
skeleton implant
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CN201711069553.2A
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Chinese (zh)
Inventor
朱献文
吴鑫华
梅俊发
王健
熊孝经
朱纬纬
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Guangzhou China Titanium Three-Dimensional Material Manufacturing Co Ltd
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Guangzhou China Titanium Three-Dimensional Material Manufacturing Co Ltd
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Priority to CN201711069553.2A priority Critical patent/CN107647941A/en
Publication of CN107647941A publication Critical patent/CN107647941A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/28Bones
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30621Features concerning the anatomical functioning or articulation of the prosthetic joint
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30943Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using mathematical models
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2002/30985Designing or manufacturing processes using three dimensional printing [3DP]

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Transplantation (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses a kind of metal bone trabecula, including at least three intersecting metal bone trabecula supports, the metal bone trabecula are also embedded with micro- topological net structure, micro- topological net structure and intersection point at the metal bone trabecula support at least three.Bone trabecula of the present invention is formed by rule or irregular array of the hollow-out unit structure in three dimensions, not only there is obvious loss of weight effect, and the rigidity and intensity of parts different zones can be met simultaneously, stress shielding is avoided, realizes high intensity and the matched well of high loss of weight ratio;In addition, after human body bone grows into the trabecular bone structure (tying lattice of rushing the net containing micro-), it can mutually be merged into an organic whole with bone, to the full extent bone can be induced to grow into, so as to reach the long-term biological fixation of prosthese.Meanwhile invention additionally discloses a kind of skeleton implant for including the metal bone trabecula.The skeleton implant can realize personalized customization by 3D printing, and process simplifies, and substantially reduces financial cost.

Description

A kind of metal bone trabecula and the skeleton implant for including the metal bone trabecula
Technical field
The present invention relates to bone trabecula technical field, especially a kind of metal bone trabecula and the bone for including the metal bone trabecula Bone implant.
Background technology
It is implanted into orthopaedics in body portion and is configured with bone trabecula, they is primarily used to form the logical of the inside of implantation body portion Road, characteristic is grown into its excellent porosity and bone, is widely used in recent years in orthopaedics implant field.But It is, if if the simply uniformly isometrical distribution of the structure of metal bone trabecula, lacks the bionical characteristic of human body real structure, be implanted into Afterwards it is actual be on active service during often due to the unequal mechanical characteristic of human body, causes some portion structure intensity deficiencies therein, But design phenomenon occurred in the structural strength at other positions again, if the structure of metal bone trabecula lacks the face combined with bone most Good state, the early stage stability of prosthese can be directly affected, and then can also influence the growth of bone, be unfavorable for prosthese steady in a long-term It is on active service.
The content of the invention
Based on this, it is small to provide a kind of metal bone it is an object of the invention to overcome in place of above-mentioned the deficiencies in the prior art Beam.
To achieve the above object, the technical solution used in the present invention is:A kind of metal bone trabecula, including at least three phases The metal bone trabecula support of friendship, the metal bone trabecula are also embedded with micro- topological net structure, micro- topological net structure with Intersection point at the metal bone trabecula support at least three.
The metal bone trabecula of the present invention for embedding micro- topological net has simulation of human body structure design, and the bone trabecula is Formed by rule or irregular array of the hollow-out unit structure in three dimensions, not only with obvious loss of weight effect, And the rigidity and intensity of parts different zones can be met simultaneously, stress shielding is avoided, realizes high intensity and high loss of weight ratio Matched well;In addition, after human body bone grows into the trabecular bone structure (tying lattice of rushing the net containing micro-), can mutually be merged into an organic whole with bone, Allow what bone trabecula prosthese consolidated to be combined with bone bed, to the full extent bone can be induced to grow into, so as to reach prosthese length The biological fixation of phase.
Preferably, it is small in the metal bone trabecula support and the point of intersection of micro- topological net structure, the metal bone The diameter of boom support is identical with the diameter of micro- topological net structure.Metal bone trabecula support and micro- topological network can so be made Lattice structure, which is realized, to be seamlessly connected, and further meets the requirement of high intensity.
Preferably, it is small in the metal bone trabecula support and micro- non-intersection of topological net structure, the metal bone The diameter of boom support is less than the diameter of micro- topological net structure.Porosity can so be increased, further function as loss of weight Effect.
Preferably, micro- topological net structure is gradual change gauge structure.Waney grading structure, there is obvious loss of weight Effect.
Preferably, the metal bone trabecula is the three-dimensional structure that is made up of hollow grid unit, the hollow grid unit By metal bone trabecula support and micro- topological net structure composition.
It is highly preferred that the length of every metal bone trabecula support is 200-2000 microns, micro- topological net knot A diameter of 30-120 microns of structure.
This bone trabecula network is connected with cortex of bone, is in irregular space network in ossis, such as silk Melon network sample is spongy, plays hematopoiesis support tissue.
Meanwhile invention additionally discloses a kind of skeleton implant for including described metal bone trabecula.The skeleton implant For acetabular cup, femoral stem, bone plate, denomination bone, Invasive lumbar fusion device etc..
In addition, the present invention also provides a kind of preparation method of the skeleton implant, comprise the following steps:
(1) the computer three-dimensional model of skeleton implant is established;
(2) the computer three-dimensional model of step (1) is divided into a series of X-Y schemes along Z-direction by equal thickness;
(3) by a series of corresponding laser beam scan paths of plan generation in step (2);
(4) layer of material powder is uniformly laid on increasing material manufacturing equipment processing platform, utilizes superlaser or electron beam By the material powder on laser beam scan path scanning machining platform in step (3), by the superlaser or electron beam scanning The processing platform surface is consolidated in after material powder fusing;
(5) in the step (4) one layer pattern of clinkering processing platform surface laying second layer material powder;
(6) step (4), (5) are repeated in, until skeleton implant is fully completed;
(7) by the skeleton implant for being sintered at processing platform, entirety is moved from increasing material manufacturing equipment together with processing platform Go out, clear up floating powder, separated skeleton implant from processing platform surface by the way of wire cutting, produce the bone implantation Thing.
Preferably, the thickness in the step (2) is 10~100 μm.
Preferably, in the step (4), the particle diameter of material powder is 1~100 μm.
Preferably, the increases material manufacturing technology includes fused deposition technology (FDM), electron beam melting (EBM), laser near net Shape one in (LENS), selective laser sintering (SLS), direct metal powder sintered (DMLS), 3D printing (3DP) technology Kind.
Preferably, in the step (4) and step (5), the material powder is titanium alloy, vitallium, tantalum alloy And other can be used for increasing material manufacturing metal material in one kind.
Relative to prior art, beneficial effects of the present invention are:
Bone trabecula of the present invention is formed by rule or irregular array of the hollow-out unit structure in three dimensions , wherein embedding micro- topology network architecture, not only with obvious loss of weight effect, and parts different zones can be met simultaneously Rigidity and intensity, avoid stress shielding, realize high intensity and the matched well of high loss of weight ratio;In addition, human body bone grows into institute After stating trabecular bone structure (containing micro- topological net) so that what bone trabecula prosthese can consolidate is combined with bone bed, can be at utmost Upper induction bone is grown into, so as to reach the long-term biological fixation of prosthese.
The skeleton implant etc. of the present invention comprising the metal bone trabecula, as acetabular cup, femoral stem, bone plate, denomination bone, Invasive lumbar fusion device etc., personalized customization can be realized by 3D printing, easily realize titanium alloy implant and surface class bone trabecula Structure is freely built, and process simplifies, and substantially reduces financial cost.
Brief description of the drawings
Fig. 1 is a kind of plane structure chart of metal bone trabecula of the present invention;
Fig. 2 is a kind of structure chart of existing solid femoral stem;
Fig. 3 is a kind of structure chart of solid femoral stem of the present invention;
Fig. 4 is a kind of partial enlarged drawing of solid femoral stem structure chart of the present invention;
Wherein, 1, metal bone trabecula support;2nd, micro- topological net structure.
Embodiment
To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with specific embodiment to the present invention It is described further.
Embodiment 1
A kind of embodiment of metal bone trabecula of the present invention, such as accompanying drawing 1 of the structure of metal bone trabecula described in the present embodiment It is shown:
The metal bone trabecula is the three-dimensional structure being made up of hollow grid unit, and the hollow grid unit is by metal bone The micro- topological net structure 2 of trabecular support 1 and gradual change footpath forms, and the length of every metal bone trabecula support 1 is 200-2000 microns, A diameter of 30-120 microns of micro- topological net structure 2;At metal bone trabecula support 1 and micro- topological net structure 2 at least three Intersection point, in the point of intersection of metal bone trabecula support 1 and micro- topological net network 2, the diameter of metal bone trabecula support 1 with it is micro- The diameter of topological net structure 2 is identical;In metal bone trabecula support 1 and micro- 2 non-intersection of topological net structure, metal bone trabecula The diameter of support 1 is less than the diameter of micro- topological net structure 2.
A kind of skeleton implant for including the metal bone trabecula, the skeleton implant are femoral stem, the femoral stem Preparation method, comprise the following steps:
(1) the computer three-dimensional model of skeleton implant is established;
(2) the computer three-dimensional model of step (1) is divided into a series of X-Y schemes along Z-direction by 10 μm equal of thickness Shape;
(3) by a series of corresponding laser beam scan paths of plan generation in step (2);
(4) titanium alloy material that uniformly one layer of particle diameter of laying is 1~100 μm on increasing material manufacturing equipment processing platform Powder, the material powder in step (3) on laser beam scan path scanning machining platform is pressed using superlaser or electron beam, by institute The processing platform surface is consolidated in after stating the material powder fusing of superlaser or electron beam scanning;
(5) in the step (4) the processing platform surface laying second layer particle diameter of one layer pattern of clinkering be 1~ 100 μm of titanium alloy material powder;
(6) step (4), (5) are repeated in, until skeleton implant is fully completed;
(7) by the skeleton implant for being sintered at processing platform, entirety is moved from increasing material manufacturing equipment together with processing platform Go out, clear up floating powder, separated skeleton implant from processing platform surface by the way of wire cutting, produce the bone implantation Thing.
In addition, the increases material manufacturing technology in the present embodiment can also be fused deposition technology (FDM), electron beam melting (EBM), laser near-net-shape (LENS), selective laser sintering (SLS), direct metal powder sintered (DMLS), 3D printing One kind in (3DP) technology.
Embodiment 2
A kind of embodiment of metal bone trabecula of the present invention, such as accompanying drawing 1 of the structure of metal bone trabecula described in the present embodiment It is shown:
The metal bone trabecula is the three-dimensional structure being made up of hollow grid unit, and the hollow grid unit is by metal bone The micro- topological net structure 2 of trabecular support 1 and gradual change footpath forms, and the length of every metal bone trabecula support 1 is 200-2000 microns, A diameter of 30-120 microns of micro- topological net structure 2;At metal bone trabecula support 1 and micro- topological net structure 2 at least three Intersection point, in metal bone trabecula support 1 and the point of intersection of micro- topological net structure 2, diameter and the micro- topology of metal bone trabecula support 1 The diameter of network 2 is identical;In metal bone trabecula support 1 and micro- 2 non-intersection of topological net structure, metal bone trabecula support 1 diameter is less than the diameter of micro- topological net structure 2.
A kind of skeleton implant for including the metal bone trabecula, the skeleton implant are acetabular cup, the femoral stem Preparation method, comprise the following steps:
(1) the computer three-dimensional model of skeleton implant is established;
(2) the computer three-dimensional model of step (1) is divided into a series of two dimensions along Z-direction by 100 μm equal of thickness Figure;
(3) by a series of corresponding laser beam scan paths of plan generation in step (2);
(4) vitallium that uniformly one layer of particle diameter of laying is 1~100 μm on increasing material manufacturing equipment processing platform Material powder, the material powder in step (3) on laser beam scan path scanning machining platform is pressed using superlaser or electron beam, The processing platform surface is consolidated in after being melted by the material powder of the superlaser or electron beam scanning;
(5) in the step (4) the processing platform surface laying second layer particle diameter of one layer pattern of clinkering be 1~ 100 μm of vitallium material powder;
(6) step (4), (5) are repeated in, until skeleton implant is fully completed;
(7) by the skeleton implant for being sintered at processing platform, entirety is moved from increasing material manufacturing equipment together with processing platform Go out, clear up floating powder, separated skeleton implant from processing platform surface by the way of wire cutting, produce the bone implantation Thing.
In addition, the increases material manufacturing technology in the present embodiment can also be fused deposition technology (FDM), electron beam melting (EBM), laser near-net-shape (LENS), selective laser sintering (SLS), direct metal powder sintered (DMLS), 3D printing One kind in (3DP) technology.
Embodiment 3
A kind of embodiment of metal bone trabecula of the present invention, such as accompanying drawing 1 of the structure of metal bone trabecula described in the present embodiment It is shown:
The metal bone trabecula is the three-dimensional structure being made up of hollow grid unit, and the hollow grid unit is by metal bone The micro- topological net structure 2 of trabecular support 1 and gradual change footpath forms, and the length of every metal bone trabecula support 1 is 200-2000 microns, A diameter of 30-120 microns of micro- topological net structure 2;At metal bone trabecula support 1 and micro- topological net structure 2 at least three Intersection point, in metal bone trabecula support 1 and the point of intersection of micro- topological net structure 2, diameter and the micro- topology of metal bone trabecula support 1 The diameter of network 2 is identical;In metal bone trabecula support 1 and micro- 2 non-intersection of topological net structure, metal bone trabecula support 1 diameter is less than the diameter of micro- topological net structure 2.
A kind of skeleton implant for including the metal bone trabecula, the skeleton implant are denomination bone, the femoral stem Preparation method, comprise the following steps:
(1) the computer three-dimensional model of skeleton implant is established;
(2) the computer three-dimensional model of step (1) is divided into a series of X-Y schemes along Z-direction by 60 μm equal of thickness Shape;
(3) by a series of corresponding laser beam scan paths of plan generation in step (2);
(4) the tantalum alloy material that uniformly one layer of particle diameter of laying is 1~100 μm on increasing material manufacturing equipment processing platform Powder, the material powder in step (3) on laser beam scan path scanning machining platform is pressed using superlaser or electron beam, by institute The processing platform surface is consolidated in after stating the material powder fusing of superlaser or electron beam scanning;
(5) in the step (4) the processing platform surface laying second layer particle diameter of one layer pattern of clinkering be 1~ 100 μm of tantalum alloy material powder;
(6) step (4), (5) are repeated in, until skeleton implant is fully completed;
(7) by the skeleton implant for being sintered at processing platform, entirety is moved from increasing material manufacturing equipment together with processing platform Go out, clear up floating powder, separated skeleton implant from processing platform surface by the way of wire cutting, produce the bone implantation Thing.
In addition, the increases material manufacturing technology in the present embodiment can also be fused deposition technology (FDM), electron beam melting (EBM), laser near-net-shape (LENS), selective laser sintering (SLS), direct metal powder sintered (DMLS), 3D printing One kind in (3DP) technology.
From the contrast of accompanying drawing 2 and accompanying drawing 3, it is known that, compared with prior art, the 3D printing bone trabecula after present invention optimization Structure be by hollow-out unit structure three dimensions rule or irregular array formed, wherein exist it is waney gradually Structure changes, there is obvious loss of weight effect.Further, the hollow-out unit body, parts different zones can be met simultaneously Rigidity and intensity, avoid stress shielding.Further, the controllable space arrangement of the hollow-out unit body, can be realized high-strength The matched well of degree and high loss of weight ratio.Further, optimization design structure of the invention does not influence the load of prosthese, is more beneficial for Bone trabecula surface and synosteosis, to the full extent bone can be induced to grow into, so as to reach the long-term biological fixation of prosthese.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should Understand, technical scheme can be modified or equivalent substitution, without departing from the essence of technical solution of the present invention And scope.

Claims (10)

1. a kind of metal bone trabecula, it is characterised in that small including at least three intersecting metal bone trabecula supports, the metal bone Beam is also embedded with micro- topological net structure, and micro- topological net structure at the metal bone trabecula support at least three with handing over Point.
2. metal bone trabecula as claimed in claim 1, it is characterised in that in the metal bone trabecula support and micro- topology The point of intersection of network, the diameter of the metal bone trabecula support are identical with the diameter of micro- topological net structure.
3. metal bone trabecula as claimed in claim 1, it is characterised in that in the metal bone trabecula support and micro- topology The non-intersection of network, the diameter of the metal bone trabecula support are less than the diameter of micro- topological net structure.
4. metal bone trabecula as claimed in claim 1, it is characterised in that micro- topological net structure is gradual change gauge structure.
5. the metal bone trabecula as described in any one of Claims 1 to 4, it is characterised in that the metal bone trabecula is by hollow out The three-dimensional structure of grid cell composition, the hollow grid unit is by metal bone trabecula support and micro- topological net structure composition.
6. metal bone trabecula as claimed in claim 5, it is characterised in that the length of every metal bone trabecula support is 200-2000 microns, a diameter of 30-120 microns of micro- topological net structure.
A kind of 7. skeleton implant of the metal bone trabecula comprising as described in any one of claim 1~6.
8. a kind of preparation method of skeleton implant as claimed in claim 7, it is characterised in that comprise the following steps:
(1) the computer three-dimensional model of skeleton implant is established;
(2) the computer three-dimensional model of step (1) is divided into a series of X-Y schemes along Z-direction by equal thickness;
(3) by a series of corresponding laser beam scan paths of plan generation in step (2);
(4) layer of material powder is uniformly laid on increasing material manufacturing equipment processing platform, using superlaser or electron beam by step Suddenly the material powder in (3) on laser beam scan path scanning machining platform, by the superlaser or the material of electron beam scanning The processing platform surface is consolidated in after powder fusing;
(5) in the step (4) one layer pattern of clinkering processing platform surface laying second layer material powder;
(6) step (4), (5) are repeated in, until skeleton implant is fully completed;
(7) by the skeleton implant for being sintered at processing platform, entirety removes from increasing material manufacturing equipment together with processing platform, clearly The floating powder of reason, skeleton implant is separated, produce the skeleton implant by the way of wire cutting from processing platform surface.
9. the preparation method of skeleton implant as claimed in claim 8, it is characterised in that the thickness in the step (2) is 10~100 μm.
10. the preparation method of skeleton implant as claimed in claim 8, it is characterised in that in the step (4), material powder The particle diameter at end is 1~100 μm.
CN201711069553.2A 2017-11-02 2017-11-02 A kind of metal bone trabecula and the skeleton implant for including the metal bone trabecula Pending CN107647941A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
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CN108376418A (en) * 2018-02-26 2018-08-07 广州华钛三维材料制造有限公司 A kind of bone trabecula model building method with topological structure
CN109044566A (en) * 2018-07-04 2018-12-21 广州华钛三维材料制造有限公司 Refinement crystal grain processing unit during bone trabecula 3D printing
CN110151364A (en) * 2019-07-01 2019-08-23 广东省新材料研究所 A kind of hip prosthesis handle structure and preparation method thereof
CN110742711A (en) * 2019-06-05 2020-02-04 湖南普林特医疗器械有限公司 Manufacturing method of medical bone-like small-beam-structure porous tantalum bone implant prosthesis through laser additive manufacturing and high-temperature vacuum sintering
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CN110833470B (en) * 2019-12-24 2021-08-24 安徽中健三维科技有限公司 Individualized imitative bone trabecula structure metal gasket based on 3D printing technique
CN112022445A (en) * 2020-09-29 2020-12-04 北京市春立正达医疗器械股份有限公司 Bone trabecula structure and application thereof
CN112022446A (en) * 2020-09-29 2020-12-04 北京市春立正达医疗器械股份有限公司 Semi-pelvic prosthesis
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