CN106913401B - A kind of multisection type hip joint - Google Patents
A kind of multisection type hip joint Download PDFInfo
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- CN106913401B CN106913401B CN201510982809.3A CN201510982809A CN106913401B CN 106913401 B CN106913401 B CN 106913401B CN 201510982809 A CN201510982809 A CN 201510982809A CN 106913401 B CN106913401 B CN 106913401B
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- vestibule
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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
Abstract
The present invention relates to a kind of multisection type hip joints.It includes femoral stem (1) and neck of femur (2)；Its femoral stem (1) is divided into proximal end (3) and distal end (4) two parts；Proximal end (3) head upper end face is equipped with mounting hole (5)；Neck of femur (2) lower part is fitted directly in mounting hole (5)；It is equipped in the middle part of proximal end (3) and fills interlayer (6) using made of multilevel hole material through shank body two sides；Proximal end (3) lower part is equipped with inner hole (7), is equipped with cascaded surface (8) in inner hole (7)；Distally (4) head is equipped with connecting rod (9), and connecting rod (9) end has resilient barb (10)；Connecting rod (9) is plugged into inner hole (10), and resilient barb (10) hooks at the cascaded surface (8) being stuck in inner hole (7)；Distally an interval region (11) are formed between (4) head end and proximal end (3) lower end surface.Connective stability and biocompatibility of the present invention 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 joints.
Background technique
Currently, hip-joint replacement prosthesis is mostly unitary design, its own haves the defects that lack pooling feature, in
Load is larger, stress condition is poor, and service life is shorter.In addition, existing replacement prosthesis is also generally existing between tissue
Connective stability is not high, easily loosens, rotates and falls off；Biocompatibility is poor, and rejection, postoperation recovery are subject to after implantation
The general character problem such as ineffective.These problems rely on merely optimizing structure design to be difficult to whole realizations.
Porous material has the characteristics such as relative density is low, specific strength is high, specific surface area is high, light-weight, 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 the advantage with holes at different levels, and there is advantage not available for the material in single hole simultaneously, thus obtained more and more
Concern.For example, mesoporous (aperture 2nm < < 50nm)-micropore (the aperture < of macropore (aperture > 50nm)-with three-dimensional order
2nm) the molecular sieve of structure combines the advantage of multi-stage artery structure and the nanocrystalline the two of molecular sieve, imparts molecular sieve and more open
The three-dimensional open-framework put, while nano molecular sieve crystal substantially reduces mass transfer path, effectively improves institute's score
The materialization activity etc. of son sieve.However, the porous structure used in prosthetic replacement's prosthese at present is mostly single Porous materials,
And the report about multilevel hole material is even more extremely limited.This may be mainly due to existing porous material itself there is also
Along with the raising of porosity, structural mechanics intensity can be remarkably decreased, therefore porosity is generally relatively low, heavier, connectivity of being self-possessed
It is lower, it is unfavorable for the efficient exchange of substance in tissue, biocompatibility is bad, and postoperation recovery is ineffective；In addition, using
Need material itself uniform in biomimetic artificial bone, if pore size, hole are evenly distributed, so that performance uniformity, but it is real
On border, there are many multilevel hole materials that the requirement, lack of uniformity is not achieved；In spite of material call oneself reached it is higher
Even property, but its uniformity is still the uniformity under large volume scale, if carrying out measurement comparison with small size scale, such as in material
Take up an official post and take said three-dimensional body of the muti-piece volume no more than one cubic centimetre, surveys its quality respectively, degree of irregularity difference is still very
Greatly, therefore cause the various performances of multilevel hole material uneven, as pore size, gap be unevenly distributed result in mechanical strength,
The uneven distributions such as elasticity modulus, the defects of causing hidden danger of quality, to seriously affect its function.Such as CN201210185031
Disclose a kind of preparation method of the biomimetic artificial bone of multistage (micrometer/nanometer) pore structure, however three obtained using this method
It ties up hierarchical porous structure and the functional requirement of biomimetic artificial bone is not still able to satisfy due to the randomness of its pore structure, scrambling.
Summary of the invention
The purpose of the present invention is to provide a kind of multisection type hip joint, its own connective stability and biocompatibility compared with
Height, implantation effect are 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 closely
End and distal end two parts；The head upper end face of the proximal end is equipped with mounting hole；The lower part of the neck of femur is fitted directly to described
In mounting hole；It is equipped in the middle part of the proximal end and fills interlayer using multilevel hole material is manufactured through shank body two sides；The proximal end
Lower part be equipped with inner hole, cascaded surface is equipped in the inner hole；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 inner hole, and resilient barb hooks at the cascaded surface being stuck in inner hole；It is described
An interval region is formed between the head end of distal end and the lower end surface of the proximal end.
To slow down the impact force that its structure is subject in use, above-mentioned multisection type hip joint also has additional cushion；It is described
Cushion is set to the interval region.By adding buffering between the distal tip end face and proximal end lower end surface of femoral stem
Pad, had not only effectively buffered the active force between the two, but also be filled with clearance space between the two simultaneously, so that femoral stem is remote
End and the hook card effect of proximal end to each other are even closer reliable.
To prevent from occurring axial rotation between the distal end of femoral stem and proximal end, and increase its connective stability simultaneously, it is above-mentioned
Above-mentioned cascaded surface in inner hole is the multiple of Disjunct distribution；Interruption point described in the resilient barb Corresponding matching of above-mentioned connection boom end
The cascaded surface of cloth.By by the cascaded surface Disjunct distribution in inner hole, i.e., so that the cascaded surface is in discontinuous multiple, each of which
It is only a bit of, only when resilient barb corresponding matching is to this bit of position, its hook can just snapped into.
To meet different patient personalized demands, to reach best installation effect requirement, the lower part of above-mentioned neck of femur is whole
Body is in positive bar shape, and top is set as biasing tilt column；The lower end of above-mentioned neck of femur is set as threaded rod；The threaded rod and institute
State mounting hole mating connection.The case where according to different patients, by the length and the neck of femur top and the bottom that control neck of femur top
Between tilt angle, can make neck of femur have many kinds of variable specifications, to adapt to the demand of different patients.
Optimize as further, above-mentioned multilevel hole material used by above-mentioned filling interlayer, specifically by multistage porous material
Material is constituted, including material body, ontology are the vestibules being classified with material pore size, and around the cavity wall structure for forming vestibule
At vestibule is in uniform distribution, and junior's vestibule is arranged in the cavity wall for constituting higher level's vestibule in three-dimensional space；Vestibules at different levels
It is respectively mutually communicated and vestibule at different levels also penetrates through each other each other, vestibule refers to each vestibule in multi-stage porous material in uniform distribution
It is in uniform distribution under arbitrary unit grade volume on material.
The cavity wall of above-mentioned multilevel hole material, higher level's vestibule can be made of next stage porous material, so that vestibule divides step by step
Layer, and the structure and pore size of reasonable Arrangement vestibule；The cavity wall of higher level's vestibule can also be by the multistage porous material of its junior
Compound composition, so that material meets specific functional requirement.
More specifically, above-mentioned multilevel hole material, intrinsic every grade of porous material are certainly a continuous structure body.Its
The maximum outer boundary of every level-one porous material is suitable with the space boundary of entire material body.I.e. every grade of porous material can be made
It is present in ontology for the independent porous material of level-one, and the physical and chemical performance with it alone.Such structure can make respectively
The physical and chemical performance difference of grade porous material has different physical and chemical performances, more in the entire space of relatively-stationary material
Meet various functional requirements well.
More specifically, above-mentioned unit grade volume refers to cubic centimetre grade or cubic millimeter grade or more subsection grade volume.
More specifically, above-mentioned vestibule refers in uniform distribution takes up an official post the volume taken no more than 1 in the multilevel hole material
The said three-dimensional body of the same size of cubic centimetre, their quality are substantially suitable.Quality quite refers to substantially and takes up an official post in multilevel hole material
The said three-dimensional body of same size of the multiple volumes taken no more than 1 cubic centimetre, claims its quality respectively, obtains being averaged for their quality
Value, 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.
Conventional medical metal, alloy and the materials such as nonmetallic specifically can be used in above-mentioned multilevel hole material in the present invention
It is made.And being connected and fixed between easy component, interlayer is filled using made of above-mentioned multilevel hole material, can be bonded, be welded
Or the technique that sintering etc. is conventional, realization are fixed to one another with above-mentioned femur handle proximal end on both sides of the middle shank body.
The present invention has the following beneficial effects:
(1) the present invention provides a kind of multisection type hip joint, entirety by neck of femur, femoral stem it is proximally and distally etc. more
A part composition, avoids because of individual sites disabler, and the failure of its structure entirety is caused to waste, for example, when neck goes out
When being now broken, neck of femur and femoral stem can be separated, avoid integrally-built failure waste.Via connecting rod, elasticity
Cooperation between the components such as barb and the inner hole of specific shape hooks card effect, realizes mutual connection and limit, and its distal head
Interval region between end surface and proximal end lower end surface, become tissue after the implantation grows into space, can healing acceleration
Effect；And a cushion is added again in this clearance space, and slow down the severe impact that the product is subject in use, it is therefore prevented that
Product load in impact process is excessive and occurs surprisingly, having ensured the safety of product.
(2) the filling interlayer in the middle part of its femur handle proximal end is made of multilevel hole material, and runs through shank body two sides；The multi-stage porous
Material is three-dimensional perforation (including every grade of hole three-dimensional perforation, holes at different levels three-dimensional perforation mutually), and connectivity is greatly changed
It is kind, multiple functions demand of the material as biomimetic artificial bone is sufficiently met, for example, having both good structural mechanical property simultaneously
With higher porosity, dead load is greatly alleviated, enhances the efficient exchange of substance between tissue in shank body two sides,
Greatly accelerate the convalescence after Miles operation；The phase increases the contact area between structure and femur before implantation, increases adhesive force, and
It is implanted into the later period, due to distribution mode approximating anatomy's Tissue distribution structure in the multistage gap that vestibule is constituted, thus is tissue
Fast-growth provide it is good grow into space so that tissue orderly enters gaps at different levels, and then form multistage length
Enter robust structure, greatly improve the connective stability of structure, also greatly reduces the rejection of human body, and thus
The bad impression of bring, healing effect is more preferably faster.
(3) it is also evenly distributed to the vestibule of multilevel hole material in the present invention and proposes the metric form of specific, concrete, it is clear
It is the pore size distribution uniformity that multilevel hole material is measured under the scale compared with the subsection grade volume, such multilevel hole material is
High uniformity, to ensure that the uniformity consistency of the various performances of multilevel hole material, avoid the internal flaw of selection.
Detailed description of the invention
Fig. 1 is the overall structure diagram of multisection type hip joint described in the embodiment of the present invention 1.
Fig. 2 is structural schematic diagram of the multisection type hip joint after splitting described in Fig. 1.
Fig. 3 is the A-A cross-sectional view of femur handle proximal end in multisection type hip joint described in Fig. 1.
Fig. 4 is the B-B cross-sectional view 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 cross-sectional view 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
Based on the technical solution of the present invention, following present its detailed embodiment, but protection scope of the present invention
It is not limited only to embodiment disclosed below.When not departing from and changing above-mentioned technical idea of the invention, according to the general of this field
Logical technological know-how and/or customary means, it is clear that the replacement or change of diversified forms can also be made, and the present invention should all be included in
Within the scope of.
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
12；Its femoral stem 1 is split as 4 two parts of proximal end 3 and distal end；The head upper end face of proximal end 3 is equipped with mounting hole 5, the mounting hole 5 tool
Body is set as threaded hole；The lower part of its neck of femur 2 is integrally in positive bar shape, and top is set as biasing tilt column, and the lower part of neck of femur 2
End is set as threaded rod；Threaded rod and mounting hole 5 are directly cooperatively connected；It is equipped in the middle part of its 1 proximal end 3 of femoral stem and runs through shank body two sides
Using filling interlayer 6 made of multilevel hole material；The lower part of proximal end 3 is equipped with inner hole 7, sets that there are four interruptions point in the inner hole 7
The cascaded surface 8 of cloth；Connecting rod 9 is had additional on the head of its distal end 4, there are four resilient barbs 10 for the end band of the connecting rod 9；Even
Extension bar 9 is plugged into inner hole 7, and four resilient barbs 10 respectively correspond matching and hook at the cascaded surface 8 being stuck in inner hole 7；Distally 4
It is formed with an interval region 11 between 3 lower end surface of head end and proximal end, which is equipped with cushion；Its stock in this example
Multilevel hole material used by the filling interlayer 6 at 1 proximal end of bone handle, 3 middle part is porous tantalum, has three-level hole, wherein be uniformly distributed,
There are the second level vestibule for being uniformly distributed, being mutually communicated, the cavity wall of second level vestibule in the cavity wall for the first order vestibule being mutually communicated
On have the third level vestibule for being uniformly distributed, being mutually communicated；And vestibules at different levels also penetrate through each other each other, the perforation is three-dimensional
Perforation；For every grade of porous material from being a continuous structure body, the maximum outer boundary of every level-one porous material and entire material body are empty
Between boundary it is suitable, every grade of porous material has physical and chemical performance alone.Total effective drainage porosity is 80%, first order hole average pore size
It is 510 μm, has the second level hole of 25 μm of average pore size of perforation in the cavity wall in first order hole, have in the cavity wall in second level hole
The third level hole of average pore size 780nm perforation.
Taken up an official post with conventional machining method in the multilevel hole material and takes the identical size of 9 10mm × 10mm × 10mm
Said three-dimensional body tests its quality with plum Teller-support benefit XP26Microbalance balance, and the results are shown in Table 1, wherein opposite
It is expressed as a percentage in the absolute value of the bias of average value, value is average divided by quality for the absolute value of the bias relative to average value
Value, as shown in Table 1, mass deviation are not more than 4%.
Table 1
| Piece number | Quality (mg) | Absolute value of the bias (%) relative to 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
The polystyrene sphere that partial size is 900 ± 30nm is chosen, the colloid template to form three-dimensional order arrangement is assembled,
Tantalum nanocrystal solution is prepared, tantalum nanocrystal solution is introduced into three-dimensional colloid template made of polystyrene sphere, by three-dimensional glue
Body template/tantalum nanocrystal solution mixture is dry, is then broken for the particle that partial size is 5 μm；
(2) taking partial size is the starch of 900 ± 30nm, mixes according to weight ratio 1:40 with distilled water, starch solution is made,
Slurry is made according to weight ratio 12:1:8 in above-mentioned particle, the ethyl cellulose that partial size is 35 μm and starch solution, equably
It is impregnated on the polyester form that aperture is 600 ± 20 μm；
(3) polyester form after dipping is sintered in vacuum or protective atmosphere, is carried out according still further to tantalum technique conventional subsequent
The porous tantalum with three-level hole is made in processing.
This kind of porous tantalum is grown into as bone-regeneration material, first order pore size particularly suitable for meeting the vital tissues such as blood vessel
Demand；Second level hole is lived away from home particularly suitable for various kinds of cell；Third level hole is particularly conducive to meet thin because of its a large amount of nano-pore
The sticking of born of the same parents, differentiation demand, and specific surface area is very big, many growth factors can be loaded, the adhesive force between femur is also more
By force, moreover, the connectivity in hole is good, holes at different levels are respectively mutually communicated and hole at different levels also penetrates through each other each other, can sufficiently be met
Blood, 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.
In addition, according to the actual conditions of different patients, the length L of selection control 2 top of neck of femur biasing tilt column, and
Tilt angle A between 2 top and the bottom of neck of femur has adapted to different patients that is, so that neck of femur 2 is provided with a variety of variable specifications
Individual demand.
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
12；Its femoral stem 1 is split as 4 two parts of proximal end 3 and distal end；The head upper end face of proximal end 3 is equipped with mounting hole 5；Its neck of femur 2
Lower part is integrally in positive bar shape, and top is set as biasing tilt column, and the lower part of neck of femur 2 is mounted directly to installation through interference fit
In hole 5；It is equipped in the middle part of its 1 proximal end 3 of femoral stem through shank body two sides using filling interlayer 6 made of multilevel hole material；Proximal end 3
Lower part be equipped with inner hole 7, the cascaded surface 8 there are two Disjunct distribution is set in the inner hole 7；Connection is had additional on the head of its distal end 4
Bar 9, there are two resilient barbs 10 for the end band of the connecting rod 9；Connecting rod 9 is plugged into inner hole 7, and two resilient barbs 10 are divided
Other Corresponding matching hooks at the cascaded surface 8 being stuck in inner hole 7；Distally an interval is formed between 3 lower end surface of 4 head ends and proximal end
Region 11, the interval region 11 are equipped with cushion；Multistage used by the filling interlayer 6 at its 1 proximal end of femoral stem, 3 middle part in this example
Porous materials are POROUS TITANIUM, have three-level hole, wherein are uniformly distributed, have in the cavity wall of first order vestibule that is mutually communicated uniformly point
Cloth, the second level vestibule being mutually communicated have 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 penetrate through each other each other, and the perforation is three-dimensional perforation.Every grade of porous material is from being a continuous structure body, often
The maximum outer boundary of level-one porous material is suitable with entire material body space boundary, and every grade of porous material has materialization alone
Performance.Total effective drainage porosity is 75%, and first order hole average pore size is 450 μm, has average pore size in the cavity wall in first order hole
There is the third level hole of the perforation of average pore size 670nm in the second level hole of 30 μm of perforation in the cavity wall in second level hole.
Taken up an official post with conventional machining method in the POROUS TITANIUM and takes the three-dimensional of the identical size of 9 10mm × 10mm × 10mm
Body tests its quality with plum Teller-support benefit XP26Microbalance balance, and the results are shown in Table 2, wherein relative to flat
The absolute value of the bias of mean value is expressed as a percentage, and value is the absolute value of the bias relative to average value divided by mass average value, by
Table 2 is it is found that its mass deviation is not more than 4%.
Table 2
| Piece number | Quality (mg) | Absolute value of the bias (%) relative to 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
Using partial size for 2 μm of titanium valve is raw material, minimum one of the starch as multilevel hole material to be made that partial size is 770nm
The pore creating material of grade vestibule, uses the stearic acid that partial size is 770nm as adhesive, according to titanium valve: starch: stearic acid: distilled water is pressed
Volume ratio 3:1:1:11 is configured to slurry.
It uses rib diameter for 30 μm of polyester form, the slurry is uniformly filled wherein with foam impregnation method, forms base
Then body and drying are crushed and obtain the hybrid particles containing raw material, pore creating material and polyester form that particle is 30 μm.
It (2) is that 3:1 equably pours into rib after evenly mixing by volume for 30 μm of methylcellulose by hybrid particles, partial size
In the polyester form of three-dimensional perforation that diameter is 560 ± 20 μm, aperture is 400 ± 15 μm, then polyester form is put into closed
Mold is pressed into dense green.
(3) by dense green vacuum-sintering；Sintered green body carries out conventional subsequent heat treatment according to titanium technique and obtains
POROUS TITANIUM with 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 specific shape the equal components of inner hole 7 between cooperation hook card effect, realize mutual connection and limit, it is therefore prevented that
The axial-rotation of shank body itself.
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
It is split as 4 two parts of proximal end 3 and distal end；The head upper end face of proximal end 3 is equipped with mounting hole 5, which is specifically set as screw thread
Hole；The lower part of its neck of femur 2 is integrally in positive bar shape, and top is set as biasing tilt column, and the lower end of neck of femur 2 is set as spiral shell
Rasp bar；Threaded rod and mounting hole 5 are directly cooperatively connected；It is equipped in the middle part of its 1 proximal end 3 of femoral stem through shank body two sides using multistage
Interlayer 6 is filled made of Porous materials；The lower part of proximal end 3 is equipped with inner hole 7, and the cascaded surface there are four Disjunct distribution is set in the inner hole 7
8；Connecting rod 9 is had additional on the head of its distal end 4, there are four resilient barbs 10 for the end band of the connecting rod 9；9 grafting of connecting rod
Into inner hole 7, and four resilient barbs 10 respectively correspond matching and hook at the cascaded surface 8 being stuck in inner hole 7；Distally 4 head end
An interval region 11 is formed between 3 lower end surface of proximal end；The filling interlayer 6 at its 1 proximal end of femoral stem, 3 middle part is used in this example
Multilevel hole material it is same as Example 1.
After implantation, interval region 11 between 4 lower end surface of 3 head end of distal end and proximal end becomes tissue
Space is grown into, it can healing acceleration effect；And further increase the connective stability of its structure.
Claims (27)
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 proximal end (3) and distal end (4) two parts；The head upper end face of the proximal end (3) is equipped with mounting hole (5)；The neck of femur
(2) lower part is fitted directly in the mounting hole (5)；It is equipped in the middle part of the proximal end (3) through shank body two sides using multistage
Interlayer (6) are filled made of Porous materials；The lower part of the proximal end (3) is equipped with inner hole (7), and cascaded surface is equipped in the inner hole (7)
(8)；Connecting rod (9) are had additional on the head of the distal end (4), the end of the connecting rod (9) has resilient barb (10)；It is described
Connecting rod (9) is plugged into the inner hole (7), and resilient barb (10) hooks at the cascaded surface (8) being stuck in inner hole (7)；It is described
It is distally formed between the head end of (4) and the lower end surface of the proximal end (3) interval region (11)；It also has additional buffering
It pads (12)；The cushion (12) is set to the interval region (11).
2. multisection type hip joint as described in claim 1, it is characterised in that: between the cascaded surface (8) in the inner hole (7) is
Breaking, it is multiple to be distributed；The cascaded surface (8) of Disjunct distribution described in resilient barb (10) Corresponding matching of connecting rod (9) end.
3. multisection type hip joint as claimed in claim 1 or 2, it is characterised in that: the lower part of the neck of femur (2) is integrally in positive column
Body shape, top are set as biasing tilt column；The lower end of the neck of femur (2) is set as threaded rod；The threaded rod and the peace
Hole (5) are filled to be cooperatively connected.
4. multisection type hip joint as claimed in claim 1 or 2, it is characterised in that: the multilevel hole material, by multistage porous material
It constitutes, including material body, ontology are the vestibules being classified with material pore size, and around the cavity wall structure for forming vestibule
At vestibule is in uniform distribution, and junior's vestibule is arranged in the cavity wall for constituting higher level's vestibule in three-dimensional space；Vestibules at different levels
It is respectively mutually communicated and vestibule at different levels also penetrates through each other each other, vestibule refers to each vestibule in multi-stage porous material in uniform distribution
It is in uniform distribution under arbitrary unit grade volume on material.
5. multisection type hip joint as claimed in claim 3, it is characterised in that: the multilevel hole material, by multistage porous material structure
At, including material body, ontology are the vestibules being classified with material pore size, and are constituted around the cavity wall for forming vestibule,
Its vestibule is in uniform distribution, and junior's vestibule is arranged in the cavity wall for constituting higher level's vestibule in three-dimensional space；Vestibules at different levels are equal
It is respectively mutually communicated and vestibule at different levels also penetrates through 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 grade volume.
6. multisection type hip joint as claimed in claim 4, it is characterised in that: the cavity wall of higher level's vestibule in the multilevel hole material,
Or it is made of next stage porous material, or constituted by the multistage porous material of its junior is compound.
7. 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 it is made of next stage porous material, or constituted by the multistage porous material of its junior is compound.
8. multisection type hip joint as claimed in claim 4, it is characterised in that: the multilevel hole material, it is every grade intrinsic
Porous material is from being a continuous structure body, and the space side of the maximum outer boundary of its every level-one porous material and entire material body
Boundary is suitable.
9. multisection type hip joint as claimed in claim 5, it is characterised in that: the multilevel hole material, it is every grade intrinsic
Porous material is from being a continuous structure body, and the space side of the maximum outer boundary of its every level-one porous material and entire material body
Boundary is suitable.
10. multisection type hip joint as claimed in claim 6, it is characterised in that: the multilevel hole material, it is every grade intrinsic
Porous material is from being a continuous structure body, and the space side of the maximum outer boundary of its every level-one porous material and entire material body
Boundary is suitable.
11. multisection type hip joint as claimed in claim 7, it is characterised in that: the multilevel hole material, it is every grade intrinsic
Porous material is from being a continuous structure body, and the space side of the maximum outer boundary of its every level-one porous material and entire material body
Boundary is suitable.
12. multisection type hip joint as claimed in claim 4, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
13. multisection type hip joint as claimed in claim 5, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
14. multisection type hip joint as claimed in claim 6, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
15. multisection type hip joint as claimed in claim 7, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
16. multisection type hip joint as claimed in claim 8, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
17. multisection type hip joint as claimed in claim 9, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
18. multisection type hip joint as claimed in claim 10, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
19. multisection type hip joint as claimed in claim 11, it is characterised in that: the unit grade volume refer to cubic centimetre grade or
Cubic millimeter grade.
20. multisection type hip joint as claimed in claim 12, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
21. multisection type hip joint as claimed in claim 13, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
22. multisection type hip joint as claimed in claim 14, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
23. multisection type hip joint as claimed in claim 15, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
24. multisection type hip joint as claimed in claim 16, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
25. multisection type hip joint as claimed in claim 17, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
26. multisection type hip joint as claimed in claim 18, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body mass average value.
27. multisection type hip joint as claimed in claim 19, it is characterised in that: the vestibule refers to more at this in uniform distribution
Grade Porous materials take up an official post the volume taken no more than 1 cubic centimetre and each said three-dimensional body of same size, their quality are substantially suitable；Quality
Substantially quite refer to and take up an official post the said three-dimensional body of the same size of multiple volumes for taking no more than 1 cubic centimetre in multilevel hole material, point
Also known as its quality, obtains the average value of their quality, and absolute value of the bias of any three-dimensional weight relative to mass average value
No more than the 4% of said three-dimensional body 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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| CN106913401B true CN106913401B (en) | 2019-02-19 |
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| CN203354704U (en) * | 2013-06-08 | 2013-12-25 | 重庆润泽医药有限公司 | Caput femoris artificial prosthesis |
| CN104107097A (en) * | 2014-07-16 | 2014-10-22 | 上海交通大学 | Macroscopic-microcosmic-nanometer hierarchical mechanical compatible bone restoration and preparation thereof |
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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 |
| US7828851B2 (en) * | 2002-09-30 | 2010-11-09 | Depuy Products, Inc. | Modular trial mechanism |
| EP1872744A1 (en) * | 2006-06-29 | 2008-01-02 | HAVITCIOGLU, Hasan | Hip joint prosthesis |
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| CN104107097A (en) * | 2014-07-16 | 2014-10-22 | 上海交通大学 | Macroscopic-microcosmic-nanometer hierarchical mechanical compatible bone restoration and preparation thereof |
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| Publication number | Publication date |
|---|---|
| CN106913401A (en) | 2017-07-04 |
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