CN106913401A - A kind of multisection type hip joint - Google Patents
A kind of multisection type hip joint Download PDFInfo
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- CN106913401A CN106913401A CN201510982809.3A CN201510982809A CN106913401A CN 106913401 A CN106913401 A CN 106913401A CN 201510982809 A CN201510982809 A CN 201510982809A CN 106913401 A CN106913401 A CN 106913401A
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- Prior art keywords
- vestibule
- hip joint
- multisection type
- endoporus
- type hip
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Classifications
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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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3607—Femoral heads ; Femoral endoprostheses including proximal or total replacement of the femur
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (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 present invention relates to a kind of multisection type hip joint.It includes femoral stem（1）And neck of femur（2）；Its femoral stem（1）It is divided into near-end（3）And distal end（4）Two parts；Near-end（3）Head upper surface is provided with mounting hole（5）；Neck of femur（2）Bottom is fitted directly to mounting hole（5）It is interior；Near-end（3）Middle part is provided with the filling interlayer that the use multilevel hole material through shank body both sides is made（6）；Near-end（3）Bottom is provided with endoporus（7）, endoporus（7）In be provided with cascaded surface（8）；Distal end（4）Head is provided with connecting rod（9）, connecting rod（9）End carries resilient barb（10）；Connecting rod（9）It is plugged into endoporus（10）In, resilient barb（10）Hook is stuck in endoporus（7）In cascaded surface（8）Place；Distal end（4）Head end and near-end（3）An interval region is formed between lower end surface（11）.Connective stability of the present invention and biocompatibility are higher, and implantation effect is more preferable.
Description
Technical field
The present invention relates to human synovial displacement, more particularly to a kind of multisection type hip joint.
Background technology
At present, hip-joint replacement prosthesis are generally unitary design, and its own has the defect for lacking pooling feature, are born in
Lotus is larger, stressing conditions are poor, and service life is shorter.Additionally, existing replacement prosthesis is also between generally existing and tissue
Connective stability is not high, easily loosens, rotates and comes off；Biocompatibility is poor, and rejection is subject to after implantation, postoperative
The general character problem such as healing effect is not good.These problems are difficult to whole realizations by optimizing structure design merely.
Porous material has the characteristics such as relative density is low, specific strength is high, specific surface area is high, lightweight, good penetrability, is changing
The numerous areas such as work, medicine have a wide range of applications.In the porous material, multilevel hole material is due to its unique performance --- and it is same
When there is the advantage in holes at different levels, and there is the advantage not available for the material in single hole simultaneously, thus obtained increasing
Concern.For example, the macropore (aperture ＞ 50nm) with three-dimensional order-mesoporous (2nm ＜ apertures ＜ 50nm)-micropore (hole
Footpath ＜ 2nm) structure molecular sieve, combine multi-stage artery structure and molecular sieve both advantages nanocrystalline, impart molecule
The more open three-dimensional open-framework of sieve, while nano molecular sieve crystal substantially reduces mass transfer path, is effectively improved
Materialization activity of gained molecular sieve etc..However, the loose structure for being used in prosthetic replacement's prosthese at present is mostly single
Porous materials, and the report on multilevel hole material is even more extremely limited.This may be mainly due to existing porous material in itself
There is also along with the raising of porosity, structural mechanics intensity can be remarkably decreased, therefore porosity is generally relatively low, deadweight compared with
Weight, connectivity is relatively low, is unfavorable for the efficient exchange of material in tissue, and biocompatibility is not good, and postoperation recovery effect is not
It is good；Additionally, being applied to biomimetic artificial bone need material uniform in itself, such as pore size, hole are evenly distributed, to cause property
Can uniformity, but in fact, there is many multilevel hole materials not reach the requirement, its lack of uniformity；In spite of material
Call oneself and reached uniformity higher, but its uniformity is still the uniformity under large volume yardstick, if being carried out with small size yardstick
Measurement is compared, such as taking up an official post in material takes the said three-dimensional body that polylith volume is not more than a cubic centimetre, and its quality is surveyed respectively, and it is not
Uniformity coefficient difference is still very big, and the various performances for thus resulting in multilevel hole material are uneven, such as pore size, space point
Cloth inequality result in the uneven distributions such as mechanical strength, elastic modelling quantity, cause the defects such as hidden danger of quality, so as to have a strong impact on
Its function.As CN201210185031 discloses a kind of preparation side of the biomimetic artificial bone of multistage (micrometer/nanometer) pore structure
Method, but the three-dimensional multistage pore structure obtained using the method, randomness, scrambling due to its pore structure, still not
The functional requirement of biomimetic artificial bone can be met.
The content of the invention
It is an object of the invention to provide a kind of multisection type hip joint, its own connective stability and biocompatibility are higher, plant
Enter effect more preferable.
The purpose of the present invention is achieved through the following technical solutions：
A kind of multisection type hip joint, it includes femoral stem and neck of femur, it is characterised in that：The femoral stem is split as near-end
With distal end two parts；The head upper surface of the near-end is provided with mounting hole；The bottom of the neck of femur is fitted directly to the peace
In dress hole；The near-end middle part is provided with the filling interlayer that the use multilevel hole material through shank body both sides is made；The near-end
Bottom is provided with endoporus, and cascaded surface is provided with the endoporus；Connecting rod is had additional on the head of the distal end, the end of the connecting rod
With resilient barb；The connecting rod is plugged into the endoporus, and resilient barb is hooked and is stuck at the cascaded surface in endoporus；Institute
State and be formed with an interval region between the head end of distal end and the lower end surface of the near-end.
To slow down the impulsive force that its structure is subject in use, above-mentioned multisection type hip joint also has additional cushion pad；It is described slow
Rush pad and be arranged at the interval region.Cushion pad is set up by between the distal tip end face and near-end lower end surface of femoral stem,
Both the active force between the two had effectively been buffered, and had been filled with clearance space therebetween simultaneously so that the distal end of femoral stem
Even closer reliability is acted on near-end hook card to each other.
To prevent occurring axial rotation between the distal end of femoral stem and near-end, and increase its connective stability simultaneously, above-mentioned endoporus
In above-mentioned cascaded surface for Disjunct distribution multiple；Disjunct distribution described in the resilient barb Corresponding matching of above-mentioned connection boom end
Cascaded surface.By by the cascaded surface Disjunct distribution in endoporus, that is, causing that the cascaded surface is in discontinuous multiple, each of which is only
Have a bit of, only when resilient barb corresponding matching to this bit of position, its hook can just snapped into.
To meet different patient personalized demands, to reach best installation effect requirement, the bottom of above-mentioned neck of femur is in integrally
Positive bar shape, top is set to bias tilt column；The lower end of above-mentioned neck of femur is set to threaded rod；The threaded rod with it is described
Mounting hole is connected.According to the situation of different patients, by controlling the length on neck of femur top, and neck of femur top and the bottom
Between angle of inclination, you can make neck of femur that there is the variable specification of many kinds, to adapt to the demand of different patients.
As further optimization, the above-mentioned multilevel hole material that above-mentioned filling interlayer is used, specifically by multistage porous material structure
Into, including material body, body is the vestibule being classified with material pore size, and is constituted around the cavity wall for forming vestibule,
Its vestibule is in uniform distribution, and subordinate's vestibule is set in the cavity wall for constituting higher level's vestibule in three dimensions；Vestibules at different levels are equal
Each it is mutually communicated and vestibule at different levels also insertion each other each other, vestibule refers to each vestibule in multilevel hole material in uniform distribution
It is in uniform distribution under upper arbitrary unit level volume.
Above-mentioned multilevel hole material, the cavity wall of higher level's vestibule can be made up of next stage porous material, so that vestibule is layered step by step,
And the structure and pore size of reasonable Arrangement vestibule；The cavity wall of higher level's vestibule can also be combined by the multistage porous material of its subordinate
Constitute, to cause that material meets specific functional requirement.
More specifically, above-mentioned multilevel hole material, its intrinsic every grade of porous material is a continuous structure body certainly.Its is every
The maximum external boundary of one-level porous material is suitable with the space boundary of whole material body.I.e. every grade porous material can serve as
The porous material of one-level independence is present in body, and with its physical and chemical performance alone.Such structure can cause at different levels
The physical and chemical performance of porous material difference, has different physical and chemical performances, more preferably in the whole space of relatively-stationary material
Ground meets many functional requirements.
More specifically, above-mentioned unit level volume refers to cubic centimetre level or cubic millimeter level or more subsection level volume.
More specifically, above-mentioned vestibule refers to be not more than 1 cube in the take up an official post volume that takes of the multilevel hole material in uniform distribution
Centimetre formed objects said three-dimensional body, their quality are substantially suitable.Quality quite refers to take up an official post what is taken in multilevel hole material substantially
Multiple volumes are not more than the said three-dimensional body of 1 cubic centimetre of formed objects, and its quality is claimed respectively, obtain the average value of their quality,
And any three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
Above-mentioned multilevel hole material in the present invention, can be specifically made of conventional medical metal, alloy and the material such as nonmetallic.
And be being connected between easy part, the filling interlayer being made of above-mentioned multilevel hole material can be through bonding, welding or burn
The conventional technique such as knot, realization is fixed to one another with above-mentioned femur handle proximal end middle part both sides shank body.
The present invention has following beneficial effect：
(1) the invention provides a kind of multisection type hip joint, its entirety by neck of femur, femoral stem it is proximally and distally etc. many
Individual part composition, it is to avoid because of individual sites disabler, and cause the overall failure of its structure to waste, for example, working as neck
When there is fracture, neck of femur can be separated with femoral stem, it is to avoid integrally-built failure waste.Via connecting rod,
Cooperation between the parts such as the endoporus of resilient barb and given shape hooks card effect, realizes mutual connection and spacing, and its is remote
Interval region between termination end surface and near-end lower end surface, tissue is become after the implantation grows into space, can accelerate
Healing effect；And a cushion pad is set up again in this clearance space, the severe impact that the product is subject in use is slow down again,
Prevent product load in impact process excessive and occur surprisingly, having ensured the security of product.
(2) the filling interlayer in the middle part of its femur handle proximal end is made up of multilevel hole material, and through shank body both sides；The multi-stage porous
Material is three-dimensional insertion (including every grade of hole three-dimensional insertion, holes at different levels three-dimensional insertion mutually), and its connectivity is obtained greatly
Improve, various functional requirements of the material as biomimetic artificial bone are fully met, for example, having good structural mechanics concurrently simultaneously
Performance and porosity higher, greatly alleviate dead load, enhance in shank body both sides the efficient of material between tissue
Exchange, greatly accelerate the convalescence after Miles operation；Before implantation the phase increase the contact area between structure and femur, increase attachment
Power, and phase after the implantation, due to distribution mode approximating anatomy's Tissue distribution structure in the multistage space that vestibule is constituted, thus be
The fast-growth of tissue grows into space there is provided good so that tissue enters spaces at different levels in order, and then is formed
Multistage grows into robust structure, greatly improves the connective stability of structure, also greatly reduces the rejection of human body,
And the bad impression for thus bringing, its healing effect is more preferably faster.
(3) also the vestibule of multilevel hole material is evenly distributed in the present invention and proposes the metric form of specific, concrete, specify that
It is the pore size distribution uniformity that multilevel hole material is measured under compared with the yardstick of subsection level volume, such multilevel hole material is high
Degree is uniform, so as to ensure that the uniformity consistency of the various performances of multilevel hole material, it is to avoid the internal flaw of selection.
Brief description of the drawings
Fig. 1 is the overall structure diagram of multisection type hip joint described in the embodiment of the present invention 1.
Fig. 2 is multisection type hip joint described in Fig. 1 through the structural representation after fractionation.
Fig. 3 is the A-A sectional views of femur handle proximal end in multisection type hip joint described in Fig. 1.
Fig. 4 is the B-B sectional views of femur handle proximal end in multisection type hip joint described in Fig. 1.
Fig. 5 is the overall structure diagram of multisection type hip joint described in the embodiment of the present invention 2.
Fig. 6 is the C-C sectional views of femur handle proximal end in multisection type hip joint described in Fig. 5.
Fig. 7 is the overall structure diagram of multisection type hip joint described in the embodiment of the present invention 3.
Specific embodiment
Premised on technical solution of the present invention, its detailed implementation method is following present, but protection scope of the present invention is not only
It is limited to embodiment disclosed below.In the case of not departing from and changing above-mentioned technological thought of the invention, according to the common skill of this area
Art knowledge and/or customary means, it is clear that the replacement or change of diversified forms can also be made, and model of the invention all should be included in
Within enclosing.
Embodiment 1
As shown in Figure of description 1-4, a kind of multisection type hip joint, it includes femoral stem 1, neck of femur 2 and cushion pad
12；Its femoral stem 1 is split as near-end 3 and the two parts of distal end 4；The head upper surface of near-end 3 is provided with mounting hole 5, the peace
Dress hole 5 is specifically set to screwed hole；The bottom of its neck of femur 2 is in integrally positive bar shape, and top is set to bias tilt column, and stock
The lower end of bone neck 2 is set to threaded rod；Threaded rod is directly connected with mounting hole 5；Its middle part of 1 near-end of femoral stem 3
It is provided with the filling interlayer 6 that the use multilevel hole material through shank body both sides is made；The bottom of near-end 3 is provided with endoporus 7, and this is interior
Four cascaded surfaces of Disjunct distribution 8 are provided with hole 7；Connecting rod 9 is had additional on the head of its distal end 4, the connecting rod 9
End carries four resilient barbs 10；Connecting rod 9 is plugged into endoporus 7, and four difference Corresponding matchings of resilient barb 10
Hook is stuck at the cascaded surface 8 in endoporus 7；An interval region 11 is formed between the head end of distal end 4 and the lower end surface of near-end 3,
The interval region 11 is provided with cushion pad；The multi-stage porous that the filling interlayer 6 at its middle part of 1 near-end of femoral stem 3 is used in this example
Material is porous tantalum, with three-level hole, wherein, there is uniform point in the cavity wall of the first order vestibule be uniformly distributed, being mutually communicated
Cloth, the second level vestibule being mutually communicated, there is the third level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of second level vestibule；
And vestibules at different levels also insertion each other each other, described insertion is three-dimensional insertion；Every grade of porous material is a continuous structure body certainly,
Maximum external boundary per one-level porous material is suitable with whole material body space boundary, and every grade of porous material is with thing alone
Change performance.Total effective drainage porosity is 80%, and first order hole average pore size is 510 μm, there is average in the cavity wall in first order hole
The second level hole of the insertion that 25 μm of aperture, the third level hole for having average pore size 780nm insertions in the cavity wall in second level hole.
Taken up an official post in the multilevel hole material with conventional machining method and take 9 the three of the same size of 10mm × 10mm × 10mm
Dimension body, its quality is tested with plum Teller-support benefit XP26Microbalance balances, as a result as shown in table 1, wherein, phase
Absolute value of the bias for average value is expressed as a percentage, and its value is average divided by quality relative to the absolute value of the bias of average value
Value, as shown in Table 1, its mass deviation is not more than 4%.
Table 1
| Piece number | Quality (mg) | Relative to the absolute value of the bias (%) of average value |
| 1 | 3282.624 | 1.6% |
| 2 | 3292.63 | 1.3% |
| 3 | 3242.592 | 2.8% |
| 4 | 3265.944 | 2.1% |
| 5 | 3285.960 | 1.5% |
| 6 | 3469.440 | 4% |
| 7 | 3409.392 | 2.2% |
| 8 | 3396.048 | 1.8% |
| 9 | 3379.368 | 1.3% |
| Mass average value | 3336 |
The preparation method of this kind of material is：
(1) material prepares
It is the polystyrene sphere of 900 ± 30nm to choose particle diameter, is assembled the colloid template to form three-dimensional order arrangement, system
Standby tantalum nanocrystal solution, tantalum nanocrystal solution is introduced into the three-dimensional colloid template that polystyrene sphere is made, by three-dimensional colloid
The mixture of template/tantalum nanocrystal solution is dried, and is then broken for the particle that particle diameter is 5 μm；
(2) starch that particle diameter is 900 ± 30nm is taken, according to part by weight 1：40 mix with distilled water, are made starch molten
Liquid, by ethyl cellulose that above-mentioned particle, particle diameter are 35 μm and starch solution according to part by weight 12：1：8 are made slurry,
It is uniformly impregnated with to aperture as on 600 ± 20 μm of polyester form；
(3) polyester form after dipping is sintered in vacuum or protective atmosphere, conventional follow-up place is carried out according still further to tantalum technique
Reason, is obtained the porous tantalum with three-level hole.
Used as bone-regeneration material, first order hole size is particularly suitable for meeting the demand that the vital tissues such as blood vessel grow into this kind of porous tantalum；
Second level hole is particularly suitable for living away from home for various kinds of cell；Third level hole is particularly conducive to meet cell because of its substantial amounts of nano-pore
Stick, differentiation demand, and specific surface area is very big, can load many growth factors, and the adhesive force between femur is also stronger,
And, the connectivity in hole is good, and holes at different levels are each mutually communicated and hole at different levels also insertion each other each other, can fully meet blood
Liquid, the infiltration of tissue fluid, transmission, realize the discharge of protein degradation products and metabolism product, therefore it is a kind of true
Positive bone-regeneration material.
Additionally, according to the actual conditions of different patients, selection control neck of femur 2 top biases the length L of tilt column, and
Angle of inclination A between the top and the bottom of neck of femur 2, that is, cause that neck of femur 2 is provided with various variable specifications, has adapted to difference
The individual demand of patient.
Embodiment 2
As shown in Figure of description 5-6, a kind of multisection type hip joint, it includes femoral stem 1, neck of femur 2 and cushion pad
12；Its femoral stem 1 is split as near-end 3 and the two parts of distal end 4；The head upper surface of near-end 3 is provided with mounting hole 5；Its stock
The bottom of bone neck 2 is in integrally positive bar shape, and top is set to bias tilt column, and the bottom of neck of femur 2 is direct through interference fit
It is installed in mounting hole 5；What the use multilevel hole material that its middle part of 1 near-end of femoral stem 3 is provided with through shank body both sides was made fills out
Fill interlayer 6；The bottom of near-end 3 is provided with endoporus 7, and two cascaded surfaces of Disjunct distribution 8 are provided with the endoporus 7；Its distal end 4
Head on have additional connecting rod 9, the end of the connecting rod 9 carries two resilient barbs 10；Connecting rod 9 is plugged into endoporus
In 7, and two resilient barbs 10 Corresponding matching is hooked and is stuck at the cascaded surface 8 in endoporus 7 respectively；The head end of distal end 4 with
An interval region 11 is formed between the lower end surface of near-end 3, the interval region 11 is provided with cushion pad；Its femoral stem 1 is near in this example
The multilevel hole material that is used of filling interlayer 6 at the middle part of end 3 is POROUS TITANIUM, with three-level hole, wherein, it is uniformly distributed, phase
There is the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of the first order vestibule of mutual insertion, in the cavity wall of second level vestibule
There is the third level vestibule for being uniformly distributed, being mutually communicated；And vestibules at different levels also insertion each other each other, described insertion is three-dimensional
Insertion.Every grade of porous material is from being a continuous structure body, and the maximum external boundary per one-level porous material is empty with whole material body
Between border quite, every grade of porous material has physical and chemical performance alone.Total effective drainage porosity is 75%, the average hole in first order hole
Footpath is 450 μm, has the second level hole of the insertion of 30 μm of average pore size in the cavity wall in first order hole, in the chamber in second level hole
There is the third level hole of the insertion of average pore size 670nm on wall.
Taken up an official post in the POROUS TITANIUM with conventional machining method and take 9 said three-dimensional bodies of the same size of 10mm × 10mm × 10mm,
Its quality is tested with plum Teller-support benefit XP26Microbalance balances, as a result as shown in table 2, wherein, relative to flat
The absolute value of the bias of average is expressed as a percentage, its value be the absolute value of the bias relative to average value divided by mass average value, by
Table 2 understands that its mass deviation is not more than 4%.
Table 2
| Piece number | Quality (mg) | Relative to the absolute value of the bias (%) of average value |
| 1 | 1156.184 | 1.4% |
| 2 | 1135.077 | 3.2% |
| 3 | 1151.493 | 1.8% |
| 4 | 1157.356 | 1.3% |
| 5 | 1145.630 | 2.3% |
| 6 | 1217.159 | 3.8% |
| 7 | 1197.225 | 2.1% |
| 8 | 1191.362 | 1.6% |
| 9 | 1201.915 | 2.5% |
| Mass average value | 1172.600 |
The preparation method of this kind of POROUS TITANIUM is：
(1) material prepares
It is raw material for 2 μm of titanium valve to use particle diameter, and particle diameter is the minimum one-level of the starch as multilevel hole material to be made of 770nm
The pore creating material of vestibule, with the stearic acid that particle diameter is 770nm as adhesive, according to titanium valve：Starch：Stearic acid：Distilled water
By volume 3：1：1：11 are configured to slurry.
Using a diameter of 30 μm of polyester form of rib, by the slurry, with foam impregnation method, uniformly filling wherein, forms base substrate
And dry, then crush and obtain the hybrid particles containing raw material, pore creating material and polyester form that particle is 30 μm.
(2) by methylcellulose that hybrid particles, particle diameter are 30 μm by volume 3：Equably poured into after 1 uniform mixing
During a diameter of 560 ± 20 μm of rib, aperture are for the polyester form of 400 ± 15 μm of three-dimensional insertion, then polyester form is put into
Closed mold is pressed into dense green.
(3) by dense green vacuum-sintering；Base substrate after sintering carries out conventional subsequent heat treatment according to titanium technique to be had
There is the POROUS TITANIUM in three-level hole.
Similar to embodiment 1, this kind of material is particularly suitable for doing bone-regeneration material；In the structure, via connecting rod 9, bullet
Property barb 10 and given shape the grade part of endoporus 7 between cooperation hook card effect, realize it is mutual connection and it is spacing, prevent
The axial-rotation of shank body itself is stopped.
Embodiment 3
As shown in Figure of description 7, a kind of multisection type hip joint, it includes femoral stem 1 and neck of femur 2；Its femoral stem
1 is split as near-end 3 and the two parts of distal end 4；The head upper surface of near-end 3 is provided with mounting hole 5, and the mounting hole 5 specifically sets
It is screwed hole；The bottom of its neck of femur 2 integrally be in positive bar shape, top be set to bias tilt column, and neck of femur 2 bottom
End is set to threaded rod；Threaded rod is directly connected with mounting hole 5；Its middle part of 1 near-end of femoral stem 3 is provided with through shank body
The filling interlayer 6 that the use multilevel hole material of both sides is made；The bottom of near-end 3 is provided with endoporus 7, and four are provided with the endoporus 7
The cascaded surface 8 of individual Disjunct distribution；Connecting rod 9 is had additional on the head of its distal end 4, the end of the connecting rod 9 carries four
Resilient barb 10；Connecting rod 9 is plugged into endoporus 7, and four resilient barbs 10 Corresponding matching is hooked and is stuck in endoporus 7 respectively
In cascaded surface 8 at；An interval region 11 is formed between the head end of distal end 4 and the lower end surface of near-end 3；Its stock in this example
The multilevel hole material that the filling interlayer 6 at the middle part of 1 near-end of bone handle 3 is used is same as Example 1.
After implantation, the interval region 11 between its head end of distal end 3 and the lower end surface of near-end 4 becomes the length of tissue
Enter space, can healing acceleration effect；And further increase the connective stability of its structure.
Claims (9)
1. a kind of multisection type hip joint, it includes femoral stem（1）And neck of femur（2）, it is characterised in that：The femoral stem（1）It is split as near-end（3）And distal end（4）Two parts；The near-end（3）Head upper surface be provided with mounting hole（5）；The neck of femur（2）Bottom be fitted directly to the mounting hole（5）It is interior；The near-end（3）Middle part is provided with the filling interlayer that the use multilevel hole material through shank body both sides is made（6）；The near-end（3）Bottom be provided with endoporus（7）, the endoporus（7）In be provided with cascaded surface（8）；The distal end（4）Head on have additional connecting rod（9）, the connecting rod（9）End carry resilient barb（10）；The connecting rod（9）It is plugged into the endoporus（10）In, and resilient barb（10）Hook is stuck in endoporus（7）In cascaded surface（8）Place；The distal end（4）Head end and the near-end（3）Lower end surface between be formed with an interval region（11）.
2. multisection type hip joint as claimed in claim 1, it is characterised in that：It also has additional cushion pad（12）；The cushion pad（12）It is arranged at the interval region（11）.
3. multisection type hip joint as claimed in claim 1 or 2, it is characterised in that：The endoporus（7）In the cascaded surface（8）It is the multiple of Disjunct distribution；The connecting rod（9）The resilient barb of end（10）The cascaded surface of Disjunct distribution described in Corresponding matching（8）.
4. the multisection type hip joint as described in claim 1-3 is any, it is characterised in that：The neck of femur（2）Bottom integrally be in positive bar shape, top be set to bias tilt column；The neck of femur（2）Lower end be set to threaded rod；The threaded rod and the mounting hole（5）It is connected.
5. the multisection type hip joint as described in claim 1-4 is any, it is characterised in that：The multilevel hole material, is made up of multistage porous material, including material body, body is the vestibule being classified with material pore size, and constituted around the cavity wall for forming vestibule, its vestibule is in uniform distribution, and subordinate's vestibule is set in the cavity wall for constituting higher level's vestibule in three dimensions；Vestibules at different levels are each mutually communicated and vestibule at different levels also insertion each other each other, and vestibule refers to that each vestibule is in uniform distribution under arbitrary unit level volume on multilevel hole material in uniform distribution.
6. multisection type hip joint as claimed in claim 5, it is characterised in that：The cavity wall of higher level's vestibule in the multilevel hole material, or be made up of next stage porous material, or constituted by the multistage porous material of its subordinate is compound.
7. the multisection type hip joint as described in claim 5 or 6, it is characterised in that：Described multilevel hole material, its intrinsic every grade of porous material is a continuous structure body certainly, and it is suitable with the space boundary of whole material body per the maximum external boundary of one-level porous material.
8. the multisection type hip joint as described in claim 5-7 is any, it is characterised in that：The unit level volume refers to cubic centimetre level or cubic millimeter level.
9. multisection type hip joint as claimed in claim 8, it is characterised in that：The vestibule refers to be not more than each said three-dimensional body of 1 cubic centimetre and formed objects in the take up an official post volume that takes of the multilevel hole material in uniform distribution, and their quality are substantially suitable；Quality quite refer to substantially multilevel hole material take up an official post multiple volumes for taking be not more than 1 cubic centimetre formed objects said three-dimensional body, claim its quality respectively, the average value of their quality is obtained, and any three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
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| CN201510982809.3A CN106913401B (en) | 2015-12-25 | 2015-12-25 | A kind of multisection type hip joint |
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| CN201510982809.3A CN106913401B (en) | 2015-12-25 | 2015-12-25 | A kind of multisection type hip joint |
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| US5074879A (en) * | 1990-10-26 | 1991-12-24 | Pappas Michael J | Prosthetic device with modular stem |
| US5951603A (en) * | 1997-09-25 | 1999-09-14 | Johnson & Johnson Professional, Inc. | Rotatable joint prosthesis with axial securement |
| US6126694A (en) * | 1999-03-05 | 2000-10-03 | Sulzer Orthopedics Inc. | Universal distal broach and stem trial |
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| Publication number | Publication date |
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| CN106913401B (en) | 2019-02-19 |
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