CN106726017B - POROUS TITANIUM Invasive lumbar fusion device with pore structure and support construction - Google Patents
POROUS TITANIUM Invasive lumbar fusion device with pore structure and support construction Download PDFInfo
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- CN106726017B CN106726017B CN201710000005.8A CN201710000005A CN106726017B CN 106726017 B CN106726017 B CN 106726017B CN 201710000005 A CN201710000005 A CN 201710000005A CN 106726017 B CN106726017 B CN 106726017B
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- 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
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- 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
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
-
- 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
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
-
- 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
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2002/3093—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth for promoting ingrowth of bone tissue
-
- 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
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
Abstract
The invention discloses a kind of POROUS TITANIUM Invasive lumbar fusion device with pore structure and support construction has pore structure portion and support construction portion.The pore structure device is for guiding new Bone Ingrowth.Pore structure portion is in provide open growing space openly to exposing outside for effective growth of sclerotin etc. on the upside of fusion device, downside, front side, rear side and right side.The pore structure portion of POROUS TITANIUM Invasive lumbar fusion device provided by the invention not only can independently exercise the function of oneself, but also can cooperate with support construction portion and achieve the effect that intervertebral is treated.
Description
Technical field
The present invention relates to the implantation material for vertebrae, belong to fixed network in intervertebral fusion, and in particular to a kind of porous
The position of titanium Invasive lumbar fusion device.
Background technique
The degenerative disc disease of the symptoms such as protrusion of lumber intervertebral disc and cervical spondylosis is one of modern society common disease
And frequently-occurring disease, seriously affect the quality of life of patient.Spinal fusion is one of most widely used technology of spinal surgery, main logical
It crosses and establishes at once stable backbone and implantation material ostosis effect, bone inductive effect, bone conduction effect promote backbone Bony union.
Currently, intervertebral fusion has become treatment lumbar instability, lumbar spinal stenosis, degenerated centrum olisthe, degenerated spine lateral bending, false pass
The main means of the illness such as section and degenerative disc disease.Fusion device in the prior art is according to the mode of postoperative bone tissue growth
Difference be broadly divided into two types, the first kind is provided with the fusion device of bone graft area, and the second class is the fusion device for not setting bone graft area.
Chinese patent literature CN204683846U(application number 201520112316.X) disclose a kind of arc anterior lateral cervical approach
Fusion device between spinal vertebral.The fusion device generally ellipsoidal structure, top and bottom are equipped with gradual wave rib tooth；Fusion device is also
It is symmetrically provided with the through-hole for two approximate half-circulars being arranged along the vertical direction, and two through-holes can be convenient implantation autologous bone.
The device is designed using super-large diameter, can be improved stability between centrum, can also improve the mechanical strength for bearing compression.This is practical
For novel disclosed fusion device although having relatively stable support construction, the effect of sclerotin to regrow is not ideal enough.
Fusion device disclosed in the document belongs to first kind fusion device.
Chinese patent literature CN201529176U(application number 200920247060.8) one kind is disclosed for vertebral fusion
When the embedded bone trabecula intervertebral fusion device that is implanted into, have by titanium alloy powder through the molding reticulated porous structures of electron beam melting, shape
Shape can be wedge-shaped, rectangular, semicircle or triangle, or be designed according to the concrete condition of patient's diseased region.The bone trabecula
There is a through-hole in the centre of Invasive lumbar fusion device, and the aperture of reticular structure is 50-900 microns, porosity 40-90%, and surface is also
There can be hydroxyapatite coating layer.Although fusion device disclosed in the utility model can reduce stress shielding band to a certain extent
The adverse effect come, and single reticulated porous structures are used, but the effect of sclerotin to regrow is still not ideal enough.This article
It offers disclosed fusion device and belongs to first kind fusion device.
204581605 U(application number 201520265012.7 of Chinese patent literature CN) a kind of Invasive lumbar fusion device is disclosed,
Fusion device ontology including approximate cuboid is provided with the bone grafting hole penetrated through vertically, fusion device ontology in the fusion device ontology
Upper and lower surfaces be evenly arranged with teeth；The front end face of fusion device ontology is gradually slipped over to contract by rounding marginal ray
It crosses, the rear end face of fusion device ontology is provided with implantation location hole and implantation locating slot；The two sides hollow out of fusion device ontology runs through,
Hollow part is provided with growth net.But since the surrounding of the upper side and lower side of its ontology occupies certain space, for Postoperative Bone
The growth of matter adversely affects.104706446 A(application number 201510129242.5 of Chinese patent literature CN) it is disclosed
Fusion device it is also similar with the fusion device.Fusion device disclosed in two documents belongs to first kind fusion device.
Chinese patent literature CN102293693 A(application number 201110146497.4) one kind is disclosed with bioactivity
Porous titanium alloy people's neck Invasive lumbar fusion device and preparation method thereof.The standby Invasive lumbar fusion device of the invention patent system has and natural bone group
Similar elasticity modulus is knitted, porous structure and its Internal biological active factors slow-released system can induce freshman bone tissue and grow into.It should
Patent although solves the problems, such as fusion device elasticity modulus and natural bone tissue matches and Bone Ingrowth, but this single more
Pore structure (namely pore structure portion of fusion device) lacks anti-fatigue ability, is easily broken off under the action of dynamic circulation stress,
It is not able to satisfy the demand of Long-Term Clinical.Fusion device disclosed in the document belongs to the second class fusion device.
Summary of the invention
The purpose of the present invention is to solve the above problem, provide a kind of intensity preferably and have certain elasticity with hole
The POROUS TITANIUM Invasive lumbar fusion device of structure and support construction.
The technical solution adopted by the present invention to solve the technical problems is: Invasive lumbar fusion device of the invention, has hole knot
Structure portion and support construction portion；The pore structure portion is by 3D printer by the fusion of titanium alloy material one printing shaping
A part of device is mutually in the pore structure portion that is fixed together of integrated for guiding new bone long with support construction portion
Enter；Pore structure portion on it, downside, front side, rear side and right side in openly to exposing outside, and front side, rear side and
The corresponding site on right side is internally positioned communicate in the cylindrical space of triangle, the support construction portion includes being sequentially connected
Mounting portion, left support, interconnecting piece and right support；Left support and right support are all made of a pair of of four-bladed vane structure of distribution setting up and down
And the structure being connected by corresponding column, it is connected between left support and right support by interconnecting piece；The support construction portion
Interconnecting piece include front column, rear column, upper beam and lower beam；Pass through upper beam and lower beam between front column and rear column
It is connected；Left support has upper left frame, lower-left frame and left column；Left column is connected between upper left frame and lower-left frame；Upper left
Frame and lower-left frame are in four-bladed vane structure, and simultaneously in from left front to behind the right side and from the left back intersection construction setting to before the right side,
And left column is located at upper left frame and the respective crossover sites of lower-left frame；The front and rear sides of left support all have triangle cylindricality
Open space；The front and rear sides and right side of right support all have the cylindrical open space of triangle.
The pore structure portion is to be combined to constitute by the cell voids in positive tetrahedron structure；Wherein, structural unit is equal
It is connected and composed by the titanium column of the identical cuboid columnar of 4 root long degree namely angle that each titanium column is mutual is 109 degree 28 and divides.
The length l of every titanium column in the pore structure portion is 0.3mm to 0.6mm, and width w is identical with thickness h, is
0.1mm to 0.3mm；The porosity in pore structure portion is 70% to 90%.
The good effect that the present invention has:
(1) in use with fusion device of the invention, like the effect of human intervertebral disc, have good elastic and tough
Property, and the micropore in pore structure portion is suitble to growing into for new bone, the Bony union of hypocentrum and POROUS TITANIUM fusion device in promotion.It is planting
Enter the later period, with regeneration of the bone tissue in microscopic void and the completion rebuild, form ideal bone-POROUS TITANIUM embedded structure,
With the physiological loads at mechanical support structure shared backbone position, the Invasive lumbar fusion device of this structure can be effectively used for facing
The treatment of degenerative disc disease on bed.
(2) overall structure with fusion device of the invention is that support construction portion is centrally located, and pore structure portion
Most of region on the periphery at support construction position is then set, and the exposing of pore structure portion in the up-down direction is extraneous
Position accounts for the major part of the upper and lower side of fusion device, when preferably using the left and right bracket of four-bladed vane structure as the master in support construction portion
When body structure, structural strength is not only ensured, and forms the open space of front and back and rear side up and down, pore structure portion is then
In the open space, it can not only effectively guarantee to enter intracorporal mechanical support Invasive lumbar fusion device early period, and
And after fusion device is implanted into human body, open growing space is provided for effective growth of sclerotin etc., is more beneficial to merge
Device incorporates intervertebral.
(3) why the pore structure portion of fusion device of the invention can have good elasticity and toughness, be because using
It combines and constitutes in the cell voids of positive tetrahedron structure, according to the connection type of carbon atom in diamond structures between cell voids
Similar connection type design, to assign the POROUS TITANIUM with certain elasticity, enough bones by conventional titanium alloy fusion device are whole
It closes performance (referring to that the bone by titanium and patient is combined together, the compatible performance of both osteocyte and titanium) and PEEK material melts
The low elastic modulus of clutch is integrated in one, and compensates for conventional titanium alloy alloy fusion device and PEEK material fusion device is respective not
Foot.
(4) in order to realize the integrated molding of POROUS TITANIUM Invasive lumbar fusion device, the hole that aperture is suitable, porosity is high is accessed
Gap structure, used laser power, which compares, wants small for the power of mechanical support structure, is its 0.5~0.875 times；Using
Scanning speed it is slow, be its 0.13~0.3 times；And sweep span is than big more for mechanical support structure, is it
Be 1.3~2.5 times, thus ensure that two functional parts of fusion device can independently exercise oneself function and
Achieve the purpose that the effect of intervertebral treatment.
Detailed description of the invention
Fig. 1 is a kind of stereoscopic schematic diagram using Invasive lumbar fusion device of the invention.
Fig. 2 is the stereoscopic schematic diagram in the support construction portion in Fig. 1.
Fig. 3 is the schematic top plan view of Fig. 2.
Schematic diagram when Fig. 4 is from the forward observation of Fig. 2.
Fig. 5 is the stereoscopic schematic diagram in the pore structure portion in Fig. 1.
Fig. 6 is the schematic diagram of the positive tetrahedron structural unit sub-assembly in the pore structure portion in Fig. 5.
Appended drawing reference in above-mentioned attached drawing is as follows:
Support construction portion 1, pore structure portion 2, mounting portion 11, slot device 11-1, instrument hole 11-2, left support 12, upper left
Frame 12-1, lower-left frame 12-2, left column 12-3, interconnecting piece 13, front column 13-1, rear column 13-2 right support 14, upper right frame
14-1, bottom right frame 14-2, right central post 14-3, right front column 15, right rear column 16, long L, wide W, high H, titanium column 21, long l are wide
W, high h.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiment of the present invention: following embodiment is being with technical solution of the present invention
Under the premise of implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
(embodiment 1, POROUS TITANIUM Invasive lumbar fusion device)
See Fig. 1, Fig. 5 and Fig. 6, the pore structure portion of the POROUS TITANIUM Invasive lumbar fusion device of the present embodiment is will by 3D printer
A part of the fusion device of titanium alloy material one printing shaping is mutually fixedly connected on one in integrated with support construction portion 1
The pore structure portion 2 risen is for guiding new Bone Ingrowth；Pore structure portion 2 is on it, downside, front side, rear side and right side be in opening
With putting formula to exposing outside, and the corresponding site on front side, rear side and right side it is internally positioned communicate in the cylindrical space of triangle.
The pore structure portion 2 is to be combined to constitute by the cell voids in positive tetrahedron structure；Wherein, structural unit is equal
It is connected and composed by the titanium column 21 of the identical cuboid columnar of 4 root long degree, and the mutual angle of each titanium column 21 is 109 degree 28
Point.
The length l of every titanium column 21 in the pore structure portion 2 is 0.3mm to 0.6mm millimeters, width w and thickness h
It is identical, it is 0.1mm to 0.3mm；The porosity in pore structure portion 2 is 70% to 90%.
(embodiment 2, Invasive lumbar fusion device)
As shown in Figure 1, the Invasive lumbar fusion device of the application example is by 3D printer by titanium alloy material one printing shaping
Structural member.The pore structure device of the fusion device is divided into support construction portion 1 and pore structure portion according to the difference of role
2.Support construction portion 1 is mutually fixed together in integrated with pore structure portion 2.Support construction portion 1 is for undertaking outside
Load, pore structure portion 2 is for guiding new Bone Ingrowth；The volume in support construction portion 1 accounts for the 10% of fusion device total volume.
As described in Figure 2, the support construction portion 1 includes mounting portion 11, left support 12,13 and of interconnecting piece being sequentially connected
Right support 14.Mounting portion 11 is equipped with the slot device 11-1 that a pair of point of front and back is arranged and one is located at a pair of of device to setting along left and right
Instrument hole 11-2 among tool slot.
Left support 12 and right support 14 are all made of a pair of of four-bladed vane structure of distribution setting up and down and by corresponding columns
(left column 12-3 is connected with right central post 14-3), is connected between left support 12 and right support 14 by interconnecting piece 13, support
The interconnecting piece 13 of structural portion 1 includes front column 13-1, rear column 13-2, upper beam 13-3 and lower beam 13-4；Front column 13-1
It is connected by upper beam 13-3 with lower beam 13-4 between rear column 13-2.
Left support 12 has upper left frame 12-1, lower-left frame 12-2 and left column 12-3.Left column 12-3 is connected to a left side
Between restocking 12-1 and lower-left frame 12-2.Upper left frame 12-1 and lower-left frame 12-2 is in four-bladed vane structure, and is simultaneously in from left front
After to the right side and from the left back intersection construction setting to before the right side, and left column 12-3 is connected to upper left frame 12-1 and lower-left frame
Between the respective crossover sites of 12-2.
The rear and front end in the left side of upper left frame 12-1 is connected with the right side on the top of mounting portion 11, the left side of lower-left frame 12-2
Rear and front end be connected with the right side of the lower part of mounting portion 11.
The rear and front end on the right side of upper left frame 12-1 is connected with the left side on the top of interconnecting piece 13 namely upper left frame 12-1
Right side front is connected with the upper left-hand of front column 13-1, the right side rear end of upper left frame 12-1 and the upper left-hand of rear column 13-2
It is connected.The front end on the right side of lower-left frame 12-2 is connected with the lower left side of front column 13-1, the rear end on the right side of lower-left frame 12-2
It is connected with the lower left side of rear column 13-2；So that the front and rear sides of left support 12 all have the cylindrical open sky of triangle
Between.
Right support 14 has upper right frame 14-1, bottom right frame 14-2 and right central post 14-3.Right central post 14-3 is connected to the right side
Between restocking 14-1 and bottom right frame 14-2.Upper right frame 14-1 and bottom right frame 14-2 is in four-bladed vane structure, and is simultaneously in from left front
After to the right side and from the left back intersection construction setting to before the right side, and right central post 14-3 is connected to upper right frame 14-1 and bottom right frame
Between the respective crossover sites of 14-2.
The rear and front end in the left side of upper right frame 14-1 is connected with the right side on the top of interconnecting piece 13 namely upper right frame 14-1
The front end in left side is connected with the upper right of front column 13-1, the rear end in the left side of upper right frame 14-1 and the top of rear column 13-2
Right side is connected.The rear and front end in the left side of bottom right frame 14-2 is connected with the right side of the lower part of interconnecting piece 13 namely bottom right frame 14-2
The front end in left side and the lower part of front column 13-1 on the right side of be connected, the rear end in the left side of bottom right frame 14-2 under rear column 13-2
It is connected on the right side of portion.So that the front and rear sides and right side of right support 14 all have the cylindrical open space of triangle.
Support construction portion 1 is additionally provided with right front column 15 and right rear column 16, and right front column 15 is connected to upper right frame 14-1's
Between right front ends and the right front ends of bottom right frame 14-2, right rear column 16 is connected to the right rear end and bottom right frame 14-2 of upper right frame 14-1
Right rear end between.
The front and back side of the left support 12 in the support construction portion 1, the front and back side of right support 14 and right side are in open
Setting, the design of this support construction can either effectively guarantee that Invasive lumbar fusion device early period enters intracorporal mechanical support, simultaneously
The design of four-bladed vane support provides open structure design while guaranteeing support construction surface maximum mechanical strength
Space, ensure that after fusion device is implanted into human body, a possibility that sclerotin is grown according to open mode, be more beneficial to melt
Clutch incorporates intervertebral.
See Fig. 3, the length L of the mechanical support structural portion 1 in the present embodiment is 28mm, and wide W is 11mm.
See Fig. 4, the height H of the mechanical support structural portion 1 in the present embodiment is 4mm, the appearance of the upside in support construction portion 1
The intermediate position in face is higher, left and right sides position is lower, and arc-shaped curved surface is arranged, and belongs to and meets the outer of the physiology curved surface between cone
Surface.Corresponding, the intermediate position of the outer surface of the downside in support construction portion 1 is downwardly projecting more, left and right sides position
Less, and also arc-shaped curved surface setting is protruded, the outer surface for meeting the physiology curved surface between cone is belonged to.
See Fig. 5 and Fig. 6, the structure namely pore structure that the pore structure portion 2 in the application example uses embodiment 1 to describe
Portion 2 is to be constituted by combining substantially in the cell voids of the diamond lattic structure of positive tetrahedron structure, according to Buddha's warrior attendant between cell voids
The connection type of carbon atom is connected in stone structure.Wherein, the titanium column by the identical cuboid columnar of 4 root long degree of structural unit
21 connect and compose namely angle that each titanium column 21 is mutual is 109 degree 28 and divides according to the structure in positive tetrahedron.Every titanium column
21 length is 0.5mm, and width and thickness is 0.2mm.The porosity in pore structure portion 2 is 80%.In this way between cell voids
According to the similar connection type design of the connection type of carbon atom in diamond structures, to assign the POROUS TITANIUM with certain bullet
Property, it is enough that the osseointegration character of conventional titanium alloy fusion device (is referred to that the bone by titanium and patient is combined together, osteocyte and titanium
The compatible performance of the two) and the low elastic modulus of PEEK material fusion device be integrated in one, compensate for conventional titanium alloy alloy
Fusion device and the respective deficiency of PEEK material fusion device.
The specific implementation step for preparing the fusion device of above structure is as follows:
1. the configuration design of Invasive lumbar fusion device is carried out using CAD (CAD) software, it can be with people's vertebra
The anatomical contours of body match；The CAD software is Unigraphics, Pro/E, Solidworks etc..
2. designing matching mechanical support structure in fusion device appearance profile, 1 support construction volume of the present embodiment
The 10% of fusion device total volume is accounted for, mechanical support structure CAD data are stored with independent STL data format.
3. designing micropore structure in the remaining space of removal mechanical support structure, pore-size is 200 μm, micro-
View hole gap structure CAD data is stored with independent STL data format.
4. it is soft that the STL data of mechanical support structure and micropore structure STL data are directed respectively into hierarchy slicing processing
Part, and relative tertiary location when mechanics support construction and micropore structure design is kept then to handle using hierarchy slicing
Software carries out hierarchy slicing processing to mechanical support structure and micropore structure STL data, be converted into respectively two it is independent
2-D data message file.
5. mechanical support structure and micropore structure two independent 2-D data message files are imported 3D printing to set
Standby control software, relative tertiary location when mechanics support construction and micropore structure being kept to design, is arranged corresponding 3D and beats
Print technological parameter.
6. carrying out integrated 3D printing production using titanium alloy powder as raw material, obtaining POROUS TITANIUM Invasive lumbar fusion device.
Wherein, corresponding to the 3D printing manufacture craft parameter of mechanical support structure are as follows: the power of laser is 160W, scanning speed
Degree is 1000mm/s, and powdering is with a thickness of 0.02mm, sweep span: 80 μm.Corresponding to micropore structure 3D printing manufacture craft
Parameter are as follows: the power of laser is 100W；Scanning speed is 200mm/s；Powdering is with a thickness of 0.02mm；Sweep span: 160 μm.It adopts
With this process design parameter, two kinds of structures can be made not only to be individually present but also cooperate, form the more of complete composite construction
Hole titanium Invasive lumbar fusion device.
Claims (3)
1. a kind of POROUS TITANIUM Invasive lumbar fusion device with pore structure and support construction has pore structure portion (2) and support knot
Structure portion (1)；The pore structure portion (2) is by 3D printer by the one of the fusion device of titanium alloy material one printing shaping
Part, the pore structure portion (2) being mutually fixed together in integrated with support construction portion (1) is for guiding new bone long
Enter；Pore structure portion (2) is on it, downside, front side, rear side and right side be in openly to exposing outside, it is characterised in that: institute
State corresponding site of the pore structure portion (2) on front side, rear side and right side it is internally positioned communicate in the cylindrical space of triangle；Institute
The support construction portion (1) stated is centrally located, and pore structure portion (2) are then arranged on the periphery of support construction portion (1) position
Most of region；The support construction portion (1) includes the mounting portion (11), left support (12), interconnecting piece (13) being sequentially connected
With right support (14)；Left support (12) and right support (14) are all made of a pair of of four-bladed vane structure of distribution setting up and down and pass through phase
The connected structure of the column answered, is connected between left support (12) and right support (14) by interconnecting piece (13)；The support knot
The interconnecting piece (13) in structure portion (1) includes front column (13-1), rear column (13-2), upper beam (13-3) and lower beam (13-4)；
It is connected between front column (13-1) and rear column (13-2) by upper beam (13-3) and lower beam (13-4)；Left support (12) tool
There are upper left frame (12-1), lower-left frame (12-2) and left column (12-3)；Left column (12-3) is connected to upper left frame (12-1)
Between lower-left frame (12-2)；Upper left frame (12-1) and lower-left frame (12-2) are in four-bladed vane structure, and simultaneously in from it is left front to
Behind the right side and from the left back intersection construction setting to before the right side, and left column (12-3) is located at upper left frame (12-1) and lower-left frame
At (12-2) respective crossover sites；The front and rear sides of left support (12) all have the cylindrical open space of triangle；Right support
(14) front and rear sides and right side all have the cylindrical open space of triangle.
2. the POROUS TITANIUM Invasive lumbar fusion device according to claim 1 with pore structure and support construction, it is characterised in that:
The pore structure portion (2) is to be combined to constitute by the cell voids in positive tetrahedron structure；Wherein, structural unit is by 4
The angle that the titanium column (21) of the identical cuboid columnar of length connects and composes namely each titanium column (21) is mutual is 109 degree 28
Point.
3. the POROUS TITANIUM Invasive lumbar fusion device according to claim 2 with pore structure and support construction, it is characterised in that:
The length l of every titanium column (21) in the pore structure portion (2) is 0.3mm to 0.6mm millimeters, width w and thickness h phase
It together, is 0.1mm to 0.3mm；The porosity in pore structure portion (2) is 70% to 90%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710000005.8A CN106726017B (en) | 2017-01-01 | 2017-01-01 | POROUS TITANIUM Invasive lumbar fusion device with pore structure and support construction |
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| CN201710000005.8A CN106726017B (en) | 2017-01-01 | 2017-01-01 | POROUS TITANIUM Invasive lumbar fusion device with pore structure and support construction |
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| CN106726017B true CN106726017B (en) | 2019-02-01 |
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| WO2001028461A2 (en) * | 1999-10-20 | 2001-04-26 | Sdgi Holdings, Inc. | Impacted orthopedic bone support implant |
| US20060147332A1 (en) * | 2004-12-30 | 2006-07-06 | Howmedica Osteonics Corp. | Laser-produced porous structure |
| CN104887351A (en) * | 2015-05-31 | 2015-09-09 | 西安赛隆金属材料有限责任公司 | High-strength small-bore metal bone trabecula and preparation method of same |
| CN105581860A (en) * | 2016-01-11 | 2016-05-18 | 李鹏 | 3D print type artificial bone trabecula structure cervical fusion device and preparing method and application thereof |
| CN105559950B (en) * | 2016-02-03 | 2018-02-02 | 北京纳通科技集团有限公司 | Fusion device |
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