CN106913402A - A kind of modular hip prosthesis - Google Patents
A kind of modular hip prosthesis Download PDFInfo
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- CN106913402A CN106913402A CN201510989896.5A CN201510989896A CN106913402A CN 106913402 A CN106913402 A CN 106913402A CN 201510989896 A CN201510989896 A CN 201510989896A CN 106913402 A CN106913402 A CN 106913402A
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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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The present invention relates to a kind of modular hip prosthesis.It includes femoral stem（1）And neck of femur（2）；The neck of femur（2）Lower end be made up of two parts, a portion is resilient barb（3）, another part is column（4）, and resilient barb（3）With column（4）Between be provided with spaced slot（5）；The femoral stem（1）Head on be provided with L-shaped through hole（6）；The neck of femur（2）Bottom be inserted into the L-shaped through hole（6）It is interior, and resilient barb（3）Hook is stuck in L-shaped through hole（6）On transverse holes（8）It is interior；The femoral stem（1）Middle part be provided through the filling interlayer that the use multilevel hole material of shank body both sides is made（10）.The connective stability and biocompatibility of structure of the present invention are higher, are easy to be implanted into installation operation.
Description
Technical field
The present invention relates to human synovial displacement, more particularly to a kind of modular hip prosthesis
Background technology
At present, existing hip joint implantation prosthese is mostly unitary design, although this structure has is easy to machine-shaping, just
The advantages of installing, but because of the effect of the factors such as unbalance stress in application, if there is fracture such as neck in individual sites in its structure
The situations such as portion's fracture, then will cause its structure allomeric function to fail, and this undoubtedly causes huge waste.Additionally, existing
Hip joint implantation prosthese also exist connective stability is not high and between tissue, easily loosened after implantation, come off, biofacies
Capacitive is poor, and tissue is also easy to produce repulsion, the general character problem such as service life is shorter, and these problems are merely by optimization structure
Design is difficult to whole realizations.
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 obtained due to its unique performance
Increasing concern is arrived.Multilevel hole material has the advantage in holes at different levels simultaneously, and has the material institute in single hole simultaneously not
The advantage for possessing, such as, and macropore with three-dimensional order (aperture ＞ 50nm)-mesoporous (2nm ＜ apertures ＜ 50nm)-
The molecular sieve of micropore (aperture ＜ 2nm) structure, combines multi-stage artery structure and molecular sieve both advantages nanocrystalline, assigns
The three-dimensional open-framework that molecular sieve is more open has been given, while nano molecular sieve crystal substantially reduces mass transfer path, effectively
Improve gained molecular sieve materialization activity；SiO with hierarchy mesopore-macropore2Material can be used as immobilized biological point
Son, such as guest materials of immobilized lysozyme, with the rate of adsorption and very big enzyme supported quantity very high.However, current people
The loose structure used in work articular prosthesis is mostly single Porous materials, and is even more very on the report from multilevel hole material
It is limited.This may in itself there is also along with the raising of porosity mainly due to existing porous material, and structural mechanics is strong
Degree can be remarkably decreased, therefore porosity is generally relatively low, and connectivity is relatively low, is unfavorable for the efficient exchange of material in tissue,
Biocompatibility is not good, conducts oneself with dignity heavier, and postoperative human feeling is not good, and space skewness causes mechanical strength, elasticity
The uneven distributions such as modulus, cause the defects such as hidden danger of quality.As CN201210185031 disclose it is a kind of multistage (micron/
Nanometer) pore structure biomimetic artificial bone preparation method, but the three-dimensional multistage pore structure obtained using the method, due to it
The randomness of pore structure, scrambling, still can not meet the functional requirement of biomimetic artificial bone.
Additionally, as the multilevel hole material for being applied to biomimetic artificial bone, it is necessary to material is uniform in itself, i.e. pore size, hole
It is evenly distributed, to cause performance uniformity, but in fact, there is many multilevel hole materials not reach the requirement, its uniformity
It is not enough；In spite of material call oneself and reached uniformity higher, but its uniformity is still the uniformity under large volume yardstick,
If carrying out measurement comparing with small size yardstick, such as take up an official post in material and take the said three-dimensional body that polylith volume is not more than a cubic centimetre,
Its quality is surveyed respectively, and its degree of irregularity difference is still very big, and the various performances such as mechanics for thus resulting in multilevel hole material is strong
Degree, elastic modelling quantity etc. are uneven, so as to have a strong impact on its function.
The content of the invention
It is an object of the invention to provide a kind of modular hip prosthesis, the connective stability and biocompatibility of its structure are higher,
It is easy to be implanted into installation operation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of modular hip prosthesis, it includes femoral stem and neck of femur, it is characterised in that：The lower end of the neck of femur
It is made up of two parts, a portion is resilient barb, another part is to be set between column, and resilient barb and column
There is spaced slot；L-shaped through hole is provided with the head of the femoral stem；The bottom of the neck of femur is inserted into the L-shaped and leads to
In hole, and resilient barb is hooked and is stuck in the transverse holes on L-shaped through hole；Shank body both sides are provided through in the middle part of the femoral stem
The filling interlayer that is made of use multilevel hole material.
To prevent the relative motion between femoral stem and femur, and the sinking of femoral stem after implantation is prevented, and it is more firm to combine it
Gu, the side of above-mentioned neck of femur is provided with tapered protrusion on above-mentioned femoral stem middle part.
For convenience of the installation positioning action of product in operation implementation process, the head upper end of above-mentioned femoral stem has additional location hole.
To meet different patient personalized demands, to reach best installation site requirement, the bottom of above-mentioned neck of femur is in integrally
Positive bar shape, top is set to bias tilt column.According to the situation of different patients, by controlling the length on neck of femur top, with
And the angle of inclination between neck of femur top and the bottom, you can make neck of femur that there is the variable specification of many kinds, to adapt to different patients
Demand.
Used as further selecting excellent, the above-mentioned multilevel hole material that above-mentioned filling interlayer is used specifically can be by multistage porous material
Constitute, including material body, body is the vestibule being classified with material pore size, and around the cavity wall structure of formation vestibule
Into 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；Holes at different levels
Chamber is each mutually communicated and vestibule at different levels also insertion each other each other, and vestibule refers to each vestibule in multi-stage porous in uniform distribution
In uniform distribution under arbitrary unit level volume on material.
More specifically, above-mentioned multilevel hole material, its intrinsic every grade of porous material is a continuous structure body certainly.And its
Maximum external boundary per one-level porous material is suitable with the space boundary of whole material body.I.e. every grade porous material can be made
For the porous material of one-level independence is present in body, and with its physical and chemical performance alone.Such structure can be caused respectively
The physical and chemical performance difference of level porous material, has different physical and chemical performances, more in the whole space of relatively-stationary material
Many functional requirements are met well.
More specifically, above-mentioned multilevel hole material, the cavity wall of higher level's vestibule can be made up of next stage porous material, so that hole
Chamber is layered step by step, and reasonable Arrangement vestibule structure and pore size；The cavity wall of higher level's vestibule can also be by the multistage of its subordinate
Porous material is compound to be constituted, or is constituted by the porous materials at different levels of its subordinate are compound, to cause that material meets specific function
Demand.
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.
More specifically, above-mentioned quality quite refers to be not more than 1 cube li in take up an official post multiple volumes for taking of multilevel hole material substantially
The said three-dimensional body of the formed objects of rice, claims its quality respectively, obtains the average value of their quality, and any three-dimensional weight is relative
It is not more than the 4% of said three-dimensional body mass average value in 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.
The present invention has following beneficial effect：
(1) the invention provides a kind of modular hip prosthesis, resilient barb is passed through in its structure between neck of femur and femoral stem
Card effect is hooked with the plug-in type of L-shaped through hole, and connection is combined together, it is therefore prevented that neck of femur departs from from femoral stem；And work as
When the situations such as fracture occurs in neck, can realize separating neck of femur with femoral stem again, it is to avoid cause because of component failure
Integrally-built failure is wasted.Additionally, the tapered protrusion set on its femoral stem middle part, it is therefore prevented that between femoral stem and femur
Relative motion, with reference to more firm；Its neck of femur has various variable specifications, has adapted to the individual demand of different patients.
(2) the filling interlayer through shank body both sides that its femoral stem middle part is set, is made up of multilevel hole material；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, alleviate the burden brought to human body, enhance human body group
The efficient exchange of a material is knitted, the convalescence after Miles operation is greatly accelerated, and by this specific central area in the middle part of femoral stem
Fill the multilevel hole material interlayer and also act the effects such as intramedullary cavity decompression；Vestibule in its multilevel hole material constitutes multistage sky
Gap is distributed, and its overall distribution mode approximate part tissue, significantly reduces the rejection of human body, and thus
The bad impression for bringing；After the implantation the phase, as tissue grows into the positions such as spaces at different levels, and then form multistage
Robust structure is grown into, connective stability of structure etc. is greatly improved.
(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 structural representation of modular hip prosthesis described in the embodiment of the present invention 1.
Fig. 2 is humerus handle structure top view in modular hip prosthesis described in Fig. 1.
Fig. 3 is the A-A sectional views of humerus handle structure in modular hip prosthesis described in Fig. 1.
Fig. 4 is the structural representation of modular hip prosthesis described in the embodiment of the present invention 2.
Fig. 5 is the structural representation of modular hip prosthesis 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 all should be included in of the invention
Within the scope of.
Embodiment 1
As shown in Figure of description 1-3, a kind of modular hip prosthesis, it includes femoral stem 1 and neck of femur 2；Its femur
The bottom of neck 2 is in integrally positive bar shape, and top is set to bias tilt column；The lower end of its neck of femur 2 is made up of two parts,
A portion is resilient barb 3, and another part is that interval is provided between column 4, and resilient barb 3 and column 4
Gap 5；L-shaped through hole 6 is provided with the head of its femoral stem 1, and head upper end also has additional location hole 7；Its neck of femur
2 bottoms are inserted into L-shaped through hole 6, and resilient barb 3 is hooked and is stuck in the transverse holes 8 on L-shaped through hole 6；Its femoral stem
The side of neck of femur 2 is provided with tapered protrusion 9 on 1 middle part, and the middle part of its femoral stem 1 is additionally provided with through shank body
The filling interlayer 10 that the use multilevel hole material of both sides is made；The multilevel hole material that interlayer 10 is used is filled in the present embodiment
It is POROUS TITANIUM, with three-level hole, wherein, be uniformly distributed in the cavity wall of the first order vestibule be uniformly distributed, being mutually communicated,
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 it is each
Level vestibule also insertion each other each other, described insertion is three-dimensional insertion.Every grade of porous material is a continuous structure body certainly, often
The maximum external boundary of one-level porous material is suitable with whole material body space boundary, and every grade of porous material is with materialization alone
Performance.Total effective drainage porosity is 75%, and first order hole average pore size is 450 μm, there is average hole in the cavity wall in first order hole
The second level hole of the insertion that 30 μm of footpath, the third level hole for having the insertion of average pore size 670nm in the cavity wall in second level hole.
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 XP26 Microbalance balances, as a result as shown in table 1, wherein, relative to
The absolute value of the bias of average value is expressed as a percentage, its value be the absolute value of the bias relative to average value divided by mass average 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 | 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.
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 TITANIUM；
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 connectivity in hole is good, respectively
Level hole is each mutually communicated and hole at different levels also insertion each other each other, can fully meet blood, the infiltration of tissue fluid, transmission,
The discharge of protein degradation products and metabolism product is realized, therefore it is a kind of real bone-regeneration material.Additionally, its
The supermedial tapered protrusion 9 of femoral stem 1, it is therefore prevented that relative motion between femoral stem 1 and femur, prevents stock after implantation again
Bone handle 1 sinks, and it combines more firm；According to the situation of different patients, selection control neck of femur 2 top biasing tilt column
Angle of inclination A between length L, and the top and the bottom of neck of femur 2, that is, cause that neck of femur 2 is provided with various variable specifications,
The individual demand of different patients is adapted to.
Embodiment 2
As shown in Figure of description 4, a kind of modular hip prosthesis, it includes femoral stem 1 and neck of femur 2；Its neck of femur
2 bottom is in integrally positive bar shape, and top is set to bias tilt column；The lower end of its neck of femur 2 is made up of two parts,
A portion is resilient barb 3, and another part is that interval is provided between column 4, and resilient barb 3 and column 4
Gap 5；L-shaped through hole 6 is provided with the head of its femoral stem 1, and head upper end also has additional location hole 7；Its neck of femur
2 bottoms are inserted into L-shaped through hole 6, and resilient barb 3 is hooked and is stuck in the transverse holes 8 on L-shaped through hole 6；Its femoral stem
1 middle part is additionally provided with the filling interlayer 10 that the use multilevel hole material through shank body both sides is made；Folder is filled in the present embodiment
The multilevel hole material that layer 10 is used is porous tantalum, with three-level hole, wherein, the first order be uniformly distributed, being mutually communicated
There is the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of vestibule, be uniformly distributed in the cavity wall of second level vestibule, phase
The third level vestibule of mutual insertion；And vestibules at different levels also insertion each other each other, described insertion is three-dimensional insertion；Every grade porous
, from being a continuous structure body, the maximum external boundary of every one-level porous material is suitable with whole material body space boundary, often for material
Level porous material has physical and chemical performance alone.Total effective drainage porosity is 80%, and first order hole average pore size is 510 μm,
There is the second level hole of the insertion of 25 μm of average pore size in the cavity wall in first order hole, have average pore size in the cavity wall in second level hole
The third level hole of 780nm insertions.
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 XP26 Microbalance balances, as a result as shown in table 2, wherein,
Absolute value of the bias relative to average value is expressed as a percentage, and its value is flat divided by quality relative to the absolute value of the bias of average value
Average, as shown in Table 2, 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 | 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.
Similar to embodiment 1, this kind of material is particularly suitable for doing bone-regeneration material；In when occur neck fracture etc. situation
When, can be stretched into transverse holes 8 with instrument, resilient barb 3 is promoted to spaced slot 5, to cause resilient barb 3 and horizontal stroke
Hook card and act on to losing between hole 8, that is, realize and neck of femur 2 is separated with femoral stem 1, it is to avoid because neck is broken
Integrally-built failure is caused to waste Deng component failure.
Embodiment 3
As shown in Figure of description 5, a kind of modular hip prosthesis, it includes femoral stem 1 and neck of femur 2；Its neck of femur
2 bottom is in integrally positive bar shape, and top is set to bias tilt column；The lower end of its neck of femur 2 is made up of two parts,
A portion is resilient barb 3, and another part is that interval is provided between column 4, and resilient barb 3 and column 4
Gap 5；L-shaped through hole 6 is provided with the head of its femoral stem 1；Its bottom of neck of femur 2 is inserted into L-shaped through hole 6,
And resilient barb 3 is hooked and is stuck in the transverse holes 8 on L-shaped through hole 6；The middle part of its femoral stem 1 is additionally provided with through shank body two
The filling interlayer 10 that the use multilevel hole material of side is made；Filled in the present embodiment the multilevel hole material that is used of interlayer 10 with
Embodiment 1 is identical.
Claims (10)
1. a kind of modular hip prosthesis, it includes femoral stem（1）And neck of femur（2）, it is characterised in that：The neck of femur（2）Lower end be made up of two parts, a portion is resilient barb（3）, another part is column（4）, and resilient barb（3）With column（4）Between be provided with spaced slot（5）；The femoral stem（1）Head on be provided with L-shaped through hole（6）；The neck of femur（2）Bottom be inserted into the L-shaped through hole（6）It is interior, and resilient barb（3）Hook is stuck in L-shaped through hole（6）On transverse holes（8）It is interior；The femoral stem（1）Middle part be provided through the filling interlayer that the use multilevel hole material of shank body both sides is made（10）.
2. modular hip prosthesis as claimed in claim 1, it is characterised in that：The femoral stem（1）Near the neck of femur on middle part（2）Side be provided with tapered protrusion（9）.
3. modular hip prosthesis as claimed in claim 1 or 2, it is characterised in that：The femoral stem（1）Head upper end have additional location hole（7）.
4. modular hip prosthesis 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.
5. modular hip prosthesis 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. modular hip prosthesis as claimed in claim 5, 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；Every grade of porous material is with physical and chemical performance alone in material body.
7. modular hip prosthesis as described in claim 5 or 6, 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, or constituted by the porous materials at different levels of its subordinate are compound.
8. modular hip prosthesis 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 or more subsection level volume.
9. modular hip prosthesis 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.
10. modular hip prosthesis as claimed in claim 9, it is characterised in that：The 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143520A (en) * | 2017-12-21 | 2018-06-12 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of minimally invasive hip prosthesis system |
| CN108969163A (en) * | 2017-12-28 | 2018-12-11 | 浙江德康医疗器械有限公司 | A kind of zero incisura fusion device device |
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| CN108969163A (en) * | 2017-12-28 | 2018-12-11 | 浙江德康医疗器械有限公司 | A kind of zero incisura fusion device device |
| CN108969163B (en) * | 2017-12-28 | 2021-06-25 | 浙江德康医疗器械有限公司 | Zero-notch fusion device |
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| CN106913402B (en) | 2019-02-19 |
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