CN106913404A - A kind of compound hip joint - Google Patents
A kind of compound hip joint Download PDFInfo
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- CN106913404A CN106913404A CN201510991684.0A CN201510991684A CN106913404A CN 106913404 A CN106913404 A CN 106913404A CN 201510991684 A CN201510991684 A CN 201510991684A CN 106913404 A CN106913404 A CN 106913404A
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- hole
- vestibule
- femur
- neck
- hip joint
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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
-
- 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
-
- 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
- A61F2/3662—Femoral shafts
-
- 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
- A61F2002/3652—Connections of necks to shafts
-
- 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
- A61F2/3662—Femoral shafts
- A61F2002/3678—Geometrical features
- A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
-
- 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
- A61F2/3662—Femoral shafts
- A61F2002/3678—Geometrical features
- A61F2002/3694—Geometrical features with longitudinal bores
Landscapes
- 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 compound hip joint.It includes femoral stem（1）And neck of femur（2）, it is characterised in that：The neck of femur（2）Bottom is provided with barb（3）；The femoral stem（1）Head in be provided with L-shaped through hole（4）；The neck of femur（2）Bottom be plugged into the L-shaped through hole（4）It is interior, and the barb（3）Hook is stuck in the L-shaped through hole（4）In transverse holes in；The femoral stem（1）Shank body middle part and bottom be provided with filling interlayer through shank body both sides respectively（9）, and through shank body and with filling interlayer（9）The perforation being connected（10）；The filling interlayer（9）It is made of multilevel hole material.The present invention has connective stability and biocompatibility higher concurrently, and more stable after implantation, postoperation recovery effect is more preferable.
Description
Technical field
The present invention relates to human synovial displacement, more particularly to a kind of compound hip joint.
Background technology
At present, existing artificial hip joint replacing prosthese is generally compact metal product.In the application due to the self-defect of selection,
It lacks mass exchange and between tissue, and the biocompatibility between tissue is poor, and rejection is subject to after implantation,
Postoperation recovery effect on driving birds is not good.Additionally, also all there is the stable connection how strengthened and between tissue as outer implant
Property, with the general character problem such as prevent from loosening, rotate and come off.
Porous material has the characteristics such as relative density is low, specific strength is high, specific surface area is high, good penetrability, in chemical industry, medicine
Had a wide range of applications Deng numerous areas.Wherein, multilevel hole material is due to its unique performance --- while having the excellent of holes at different levels
Gesture, and there is the advantage not available for the material in single hole simultaneously, and receive much concern.For example, the macropore with three-dimensional order
The molecular sieve of (aperture ＞ 50nm)-mesoporous (2nm ＜ apertures ＜ 50nm)-micropore (aperture ＜ 2nm) structure, with reference to
Multi-stage artery structure and molecular sieve both advantages nanocrystalline, impart the more open three-dimensional open-framework of molecular sieve, while
Nano molecular sieve crystal substantially reduces mass transfer path, is effectively improved materialization activity of gained molecular sieve etc..
However, the multilevel hole material being applied in prosthetic replacement's prosthese at present is extremely limited.This may be mainly due to existing
Some porous materials can not have porosity and structural mechanics intensity higher concurrently in itself, and its porosity is generally relatively low, conduct oneself with dignity heavier,
Connectivity is relatively low, is unfavorable for the efficient exchange of material in tissue, and biocompatibility is undesirable, postoperation recovery effect on driving birds is not good；
Tissue can not cover with inside configuration, it is impossible to eliminate the reasons such as cell stress barrier.Additionally, be applied to biomimetic artificial bone needing
Want material uniform in itself, such as pore size, hole are evenly distributed, and to cause performance uniformity, but in fact, have a lot
Multilevel hole material does not reach the requirement；In spite of call oneself and reached high uniformity, but under its uniformity is still large volume yardstick
Uniformity, if carrying out measurement comparing with small size yardstick, such as take up an official post in material and take polylith volume and be not more than one cubic centimetre
Said three-dimensional body, its quality is surveyed respectively, its degree of irregularity difference is still very big, thus results in the various property of multilevel hole material
Can be uneven, such as pore size, space skewness result in mechanical strength, elastic modelling quantity uneven distribution, 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 multistage (micrometer/nanometer)
The preparation method of the biomimetic artificial bone of pore structure, but the three-dimensional multistage pore structure obtained using the method, due to its pore structure
Randomness, scrambling, still can not meet the functional requirement of biomimetic artificial bone.
The content of the invention
It is an object of the invention to provide a kind of compound hip joint, it has connective stability and biocompatibility higher concurrently, plants
Enter rear more stable, postoperation recovery effect is more preferable.
The purpose of the present invention is achieved through the following technical solutions：
A kind of compound hip joint, it includes femoral stem and neck of femur, it is characterised in that：The neck of femur bottom is provided with barb；
L-shaped through hole is provided with the head of the femoral stem；The bottom of the neck of femur is plugged into the L-shaped through hole, and it is described fall
Hook is hooked and is stuck in the transverse holes in the L-shaped through hole；The shank body middle part of the femoral stem and bottom are provided with through handle respectively
The filling interlayer of body both sides, and through shank body and with the filling perforation that is connected of interlayer；The filling interlayer uses multi-stage porous
Material is made.
To be further ensured that the connective stability of femoral stem and femur collar, loose or dislocation is prevented, the head of above-mentioned femoral stem is also
It is provided with the mounting hole being connected with longitudinal hole in above-mentioned L-shaped through hole；Spring is had additional in above-mentioned mounting hole, spring one end is supported
Live in state neck of femur bottom, other end outside has additional the screw rod being connected in mounting hole.
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 shank body middle part of above-mentioned femoral stem is provided with tapered protrusion near the side of above-mentioned neck of femur.
To meet different patient personalized demands, to reach best installation effect, the bottom of above-mentioned neck of femur is in integrally positive column
Body shape, top is set to bias tilt column.According to the situation of different patients, by controlling the length on neck of femur top, and stock
Angle of inclination between bone neck top and the bottom, that is, cause that neck of femur has the variable specification of many kinds, has adapted to the need of different patients
Ask.
Further to increase the mass exchange passage between the implantation prosthese and biological tissue of human body, above-mentioned perforation is arranged with respect to
Femoral stem shank body is axially in transverse direction and/or the multiple for diagonally distributing.
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.
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.
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 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
The said three-dimensional body of the formed objects of millimeter, 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 millimeter 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 common process such as knot, realization is fixed to one another with above-mentioned femoral stem shank body both sides.
The invention has the advantages that：
(1) the invention provides a kind of compound hip joint, in its building block, via barb, L-shaped through hole and mounting hole etc.
The interaction of part, had both realized being interconnected and fixed between neck of femur and femoral stem, again so that between the two as needed
Can be split.Additionally, the tapered protrusion that its femoral stem shank body middle part is set, it is therefore prevented that relative between femoral stem and femur
Motion, it combines more firm；Its neck of femur has various variable formats, has adapted to the individual demand of different patients.
(2) the shank body middle part of its femoral stem and the filling interlayer of bottom are made up of multilevel hole material, and through shank body both sides；
The multilevel hole 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
To greatly improvement, various functional requirements of the material as biomimetic artificial bone are fully met, for example, having good structure concurrently
Mechanical property and porosity higher, greatly alleviate dead load, enhance the height of material between the tissue of shank body both sides
Effect is exchanged, and greatly accelerates the convalescence after Miles operation, and in combination with through shank body and the perforation that is connected with filling interlayer, this leads to
Road, further enhancing the efficient exchange of material between shank body surrounding tissue.Its filling interlayer, because using multilevel hole material
Be made, before implantation the phase increase the contact area between structure and femur, increase adhesive force, and phase after the implantation, its hole
Multistage space that chamber is constituted, approximating anatomy's Tissue distribution structure, for the fast-growth of tissue provides good growing into
Space so that tissue in order, selectively enter spaces at different levels, and then form multistage and grow into robust structure, pole
The earth improves the connective stability of structure, also greatly reduces the rejection of human body, and the bad sense for thus bringing
Receive, more preferably faster, it more realizes tissue and can cover with inside configuration its healing effect, eliminates cell stress barrier.
(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 that hip joint is combined described in the embodiment of the present invention 1.
Fig. 2 is that hip joint is combined described in Fig. 1 through the structural representation after fractionation.
Fig. 3 is the A-A sectional views in compound hip joint in the middle part of femoral stem shank body described in Fig. 1.
Fig. 4 is that hip joint is combined described in the embodiment of the present invention 2 through the structural representation after fractionation.
Fig. 5 is the structural representation that hip joint is combined 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 1-3, a kind of compound hip joint, it includes femoral stem 1, neck of femur 2, spring 5 and spiral shell
Bar 6；The bottom of its neck of femur 2 is in integrally positive bar shape, and top is set to bias tilt column, and the bottom of neck of femur 2 is provided with down
Hook 3；L-shaped through hole 4 is provided with the head of its femoral stem 1, and the mounting hole 7 being connected with longitudinal hole in L-shaped through hole 4；
The bottom of its neck of femur 2 is plugged into L-shaped through hole 4, and barb 3 is hooked and is stuck in the transverse holes in L-shaped through hole 4；Install
Spring 5 is provided with hole 7, the one end of spring 5 props up the bottom of neck of femur 2, and other end outside is provided with and is connected in mounting hole 7
Screw rod 6；The shank body middle part of its femoral stem 1 is provided with tapered protrusion 8 near the side of neck of femur 2；The handle of its femoral stem 1
Body middle part and bottom are provided with filling interlayer 9 through shank body both sides respectively, and through shank body and with the filling phase of interlayer 9
The perforation 10 of connection, the perforation 10 is axially in multiple that is horizontal and diagonally distributing relative to the shank body of femoral stem 1；In this example
The shank body middle part of its femoral stem 1 and the filling interlayer 9 of bottom, the multilevel hole material for being used is porous tantalum, and it has three-level
Hole, wherein, there is the second level hole for being uniformly distributed, being mutually communicated in the cavity wall of the first order vestibule be uniformly distributed, being mutually communicated
, there is the third level vestibule for being uniformly distributed, being mutually communicated in chamber in the cavity wall of second level vestibule；And vestibules at different levels are each other also each other
Insertion, described insertion is three-dimensional insertion；Every grade of porous material is a continuous structure body certainly, per the maximum of one-level porous material
External boundary is suitable with whole material body space boundary, and every grade of porous material is with physical and chemical performance alone.Total effective drainage porosity
It is 80%, first order hole average pore size is 510 μm, have the insertion of 25 μm of average pore size in the cavity wall in first order hole the
Second hole, 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 XP26 Microbalance 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.
During installation, first the bottom of neck of femur 2 is directly inserted into the L-shaped through hole 4 in the head of femoral stem 1, and make barb
3 hooks are stuck in the transverse holes in L-shaped through hole 4, then install spring 5 and screw rod 6 successively in mounting hole 7；Its spring 5
One end props up the bottom of neck of femur 2 so that barb 3 is tightly hooked and is stuck in the transverse holes in L-shaped through hole 4, and the other end is through screw rod
6 is spacing, serves firm effect, and its connected mode has certain resiliency.
Embodiment 2
As shown in Figure of description 4, a kind of compound hip joint, it includes femoral stem 1 and neck of femur 2；Its neck of femur 2
Bottom be in integrally positive bar shape, top is set to bias tilt column, and the lower end of neck of femur 2 is made up of two parts, wherein
A part is resilient barb 3, and another part is to be provided with spaced slot between column, and resilient barb 3 and column；Its
L-shaped through hole 4 is provided with the head of femoral stem 1；The bottom of its neck of femur 2 is plugged into L-shaped through hole 4, and resilient barb 3
Hook is stuck in the transverse holes in L-shaped through hole 4；The shank body middle part of its femoral stem 1 is provided with taper near the side of neck of femur 2
Raised 8；The shank body middle part of its femoral stem 1 and bottom are provided with the filling interlayer 9 through shank body both sides respectively, and pass through
Wear shank body and with the filling perforation 10 that is connected of interlayer 9, the perforation 10 be relative to the shank body of femoral stem 1 axially in laterally and
The multiple for diagonally distributing；The shank body middle part of its femoral stem 1 and the filling interlayer 9 of bottom, the multi-stage porous material for being used in this example
Expect to be POROUS TITANIUM, it has 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 75%, and first order hole average pore size is 450 μm, there is average in the cavity wall in first order hole
The second level hole of the insertion that 30 μm of aperture, 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 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, by the bottom of neck of femur 2
When being inserted into the L-shaped through hole 4 in the head of femoral stem 1, due to the resilient barb 3 and column of the lower end of neck of femur 2
Between be provided with spaced slot, therefore, when mounted resilient barb 3 can to spaced slot side offset；When installed,
Resilient barb 3 is that homing is put, and hook is stuck in the transverse holes in L-shaped through hole 4.Additionally, according to the reality of different patients
Border situation, selection control neck of femur 2 top biases the length L of tilt column, and the inclination angle between the top and the bottom of neck of femur 2
Degree A, that is, cause that neck of femur 2 is provided with various variable specifications, has adapted to the individual demand of different patients.
Embodiment 3
As shown in Figure of description 5, a kind of compound hip joint, it includes femoral stem 1, neck of femur 2, spring 5 and spiral shell
Bar 6；The bottom of its neck of femur 2 is in integrally positive bar shape, and top is set to bias tilt column, and the bottom of neck of femur 2 is provided with down
Hook 3；L-shaped through hole 4 is provided with the head of its femoral stem 1, and the mounting hole 7 being connected with longitudinal hole in L-shaped through hole 4；
The bottom of its neck of femur 2 is plugged into L-shaped through hole 4, and barb 3 is hooked and is stuck in the transverse holes in L-shaped through hole 4；Install
Spring 5 is provided with hole 7, the one end of spring 5 props up the bottom of neck of femur 2, and other end outside is provided with and is connected in mounting hole 7
Screw rod 6；The shank body middle part of its femoral stem 1 and bottom are provided with the filling interlayer 9 through shank body both sides respectively, and pass through
Wear shank body and with the filling perforation 10 that is connected of interlayer 9, the perforation 10 be relative to the shank body of femoral stem 1 axially in laterally and
The multiple for diagonally distributing；The shank body middle part of its femoral stem 1 and the filling interlayer 9 of bottom, the multi-stage porous material for being used in this example
Material is same as Example 1.
Claims (9)
1. a kind of compound hip joint, it includes femoral stem（1）And neck of femur（2）, it is characterised in that：The neck of femur（2）Bottom is provided with barb（3）；The femoral stem（1）Head in be provided with L-shaped through hole（4）；The neck of femur（2）Bottom be plugged into the L-shaped through hole（4）It is interior, and the barb（3）Hook is stuck in the L-shaped through hole（4）In transverse holes in；The femoral stem（1）Shank body middle part and bottom be provided with filling interlayer through shank body both sides respectively（9）, and through shank body and with filling interlayer（9）The perforation being connected（10）；The filling interlayer（9）It is made of multilevel hole material.
2. hip joint is combined as claimed in claim 1, it is characterised in that：The femoral stem（1）Head be additionally provided with and the L-shaped through hole（4）The mounting hole that middle longitudinal hole is connected（7）；The mounting hole（7）Inside have additional spring（5）, spring（5）One end props up the neck of femur（2）Bottom, other end outside has additional and is connected to mounting hole（7）In screw rod（6）.
3. hip joint is combined as claimed in claim 1 or 2, it is characterised in that：The femoral stem（1）Shank body middle part near the neck of femur（2）Side be provided with tapered protrusion（8）.
4. hip joint is combined 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. hip joint is combined as described in claim 1-4 is any, it is characterised in that：The perforation（10）It is arranged with respect to femoral stem（1）Shank body is axially in transverse direction and/or the multiple for diagonally distributing.
6. hip joint is combined as described in claim 1-5 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；The unit level volume refers to cubic centimetre level or cubic millimeter level.
7. hip joint is combined as claimed in claim 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；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. hip joint is combined as claimed in claims 6 or 7, it is characterised in that：The vestibule refers to be not more than each said three-dimensional body of 1 cubic millimeter 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.
9. hip joint is combined as claimed in claim 8, 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 millimeter 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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| SU1438765A1 (en) * | 1987-01-08 | 1988-11-23 | Казанский государственный институт усовершенствования врачей им.В.И.Ленина | Compensation endoprosthesis |
| SU1500285A1 (en) * | 1987-01-27 | 1989-08-15 | Саратовский медицинский институт | Artificial talocrural joint |
| CN1972645A (en) * | 2004-03-11 | 2007-05-30 | 正轴有限公司 | Rotatable head of enarthrotic prosthesis |
| US7273499B2 (en) * | 2002-09-30 | 2007-09-25 | Depuy Products, Inc. | Modular trial mechanism |
| US20100010513A1 (en) * | 2008-07-14 | 2010-01-14 | Korean Institute Of Machinery & Materials | Porous material having hierarchical porous structure and preparation method thereof |
| WO2011091466A1 (en) * | 2010-02-01 | 2011-08-04 | Maxx Health Inc | Artificial joint component having hollow interior and means for load dissipation |
| CN203354698U (en) * | 2013-06-08 | 2013-12-25 | 重庆润泽医药有限公司 | Caput femoris implant |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1438765A1 (en) * | 1987-01-08 | 1988-11-23 | Казанский государственный институт усовершенствования врачей им.В.И.Ленина | Compensation endoprosthesis |
| SU1500285A1 (en) * | 1987-01-27 | 1989-08-15 | Саратовский медицинский институт | Artificial talocrural joint |
| US7273499B2 (en) * | 2002-09-30 | 2007-09-25 | Depuy Products, Inc. | Modular trial mechanism |
| CN1972645A (en) * | 2004-03-11 | 2007-05-30 | 正轴有限公司 | Rotatable head of enarthrotic prosthesis |
| US20100010513A1 (en) * | 2008-07-14 | 2010-01-14 | Korean Institute Of Machinery & Materials | Porous material having hierarchical porous structure and preparation method thereof |
| WO2011091466A1 (en) * | 2010-02-01 | 2011-08-04 | Maxx Health Inc | Artificial joint component having hollow interior and means for load dissipation |
| CN203354698U (en) * | 2013-06-08 | 2013-12-25 | 重庆润泽医药有限公司 | Caput femoris implant |
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| CN106913404B (en) | 2019-02-19 |
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