CN106913404B - A kind of compound hip joint - Google Patents
A kind of compound hip joint Download PDFInfo
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- CN106913404B CN106913404B CN201510991684.0A CN201510991684A CN106913404B CN 106913404 B CN106913404 B CN 106913404B CN 201510991684 A CN201510991684 A CN 201510991684A CN 106913404 B CN106913404 B CN 106913404B
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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 joints.It includes femoral stem (1) and neck of femur (2), it is characterised in that: neck of femur (2) lower part is equipped with barb (3)；L shape through-hole (4) is equipped in the head of the femoral stem (1)；The lower part of the neck of femur (2) is plugged into the L shape through-hole (4), and the barb (3) hook is stuck in the transverse holes in the L shape through-hole (4)；In the middle part of the shank body of the femoral stem (1) and lower part is provided with the filling interlayer (9) through shank body two sides, and the perforation (10) for running through shank body and being connected with filling interlayer (9) respectively；The filling interlayer (9) is made of multilevel hole material.The present invention has both higher connective stability and biocompatibility, more stable after implantation, and 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 joints.
Background technique
Currently, existing artificial hip joint replacing prosthese is mostly compact metal product.In the application due to selection itself
Defect, it lacks mass exchange between tissue, and the biocompatibility between tissue is poor, is subject to repel after implantation
Reaction, postoperation recovery are ineffective.In addition, as outer implant, also all there is the connections how enhanced between tissue
Stability, the general character problem such as to prevent from loosening, rotate and fall 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
Equal numerous areas have a wide range of applications.Wherein, multilevel hole material is due to its unique performance --- while there is the excellent of holes at different levels
Gesture, and there is advantage not available for the material in single hole simultaneously, and be concerned.For example, macropore (the hole with three-dimensional order
Diameter > 50nm)-mesoporous (aperture 2nm < < 50nm)-micropore (aperture < 2nm) structure molecular sieve, combine multistage pore canal
The advantage of structure and the nanocrystalline the two of molecular sieve, imparts the more open three-dimensional open-framework of molecular sieve, while nano molecular sieve
Crystal substantially reduces mass transfer path, effectively improves the materialization activity etc. of gained molecular sieve.
However, extremely limited applied to the multilevel hole material in prosthetic replacement's prosthese at present.This may be mainly by
Higher porosity and structural mechanics intensity cannot be had both in existing porous material itself, porosity is generally relatively low, self weight
Heavier, connectivity is lower, is unfavorable for the efficient exchange of substance in tissue, and biocompatibility is undesirable, postoperation recovery effect
It is bad；Tissue cannot cover with inside configuration, can not eliminate the reasons such as cell stress barrier.In addition, being applied to biomimetic prosthetic
Bone needs material itself uniform, if pore size, hole are evenly distributed, so that performance uniformity, but in fact, have very much
The requirement is not achieved in multilevel hole material；In spite of call oneself and reached high uniformity, but its uniformity is still under large volume scale
Uniformity, if carrying out measurement comparison with small size scale, for example take up an official post in material and take muti-piece volume no more than one cubic centimetre
Said three-dimensional body, survey its quality respectively, degree of irregularity difference is still very big, therefore causes the various performances of multilevel hole material
Unevenly, such as pore size, gap are unevenly distributed and result in mechanical strength, elasticity modulus uneven distribution, cause quality
The defects of hidden danger, to seriously affect its function.As CN201210185031 discloses a kind of multistage (micrometer/nanometer) pore structure
Biomimetic artificial bone preparation method, however the three-dimensional multistage pore structure obtained using this method is random due to its pore structure
Property, scrambling, are not still able to satisfy the functional requirement of biomimetic artificial bone.
Summary of the invention
The purpose of the present invention is to provide a kind of compound hip joints, it has both higher connective stability and bio-compatible
Property, more stable after implantation, 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 lower part is equipped with
Hook；L shape through-hole is equipped in the head of the femoral stem；The lower part of the neck of femur is plugged into the L shape through-hole, and it is described fall
Hook hook is stuck in the transverse holes in the L shape through-hole；It is provided with respectively with lower part through handle in the middle part of the shank body of the femoral stem
The filling interlayer of body two sides, and through shank body and with the perforation that is connected of filling interlayer；The filling interlayer uses multi-stage porous
Material is made.
For the connective stability for being further ensured that femoral stem and femur collar, loose or dislocation, the head of above-mentioned femoral stem are prevented
Portion is additionally provided with and longitudinal hole is connected in above-mentioned L shape through-hole mounting hole；Spring, spring one end are had additional in above-mentioned mounting hole
Above-mentioned neck of femur lower part is resisted, has additional the screw rod being connected in mounting hole on the outside of the other end.
To prevent the relative motion between femoral stem and femur, and the sinking of femoral stem after implantation is prevented, and made it combine
Stronger, the side in the middle part of the shank body of above-mentioned femoral stem close to above-mentioned neck of femur is provided with tapered protrusion.
To meet different patient personalized demands, to reach best installation effect, the lower part of above-mentioned neck of femur is integrally in
Positive bar shape, top are set as biasing tilt column.The case where according to different patients, by the length on control neck of femur top, and
Tilt angle between neck of femur top and the bottom has adapted to different patients' that is, so that neck of femur has many kinds of variable specifications
Demand.
To further increase the mass exchange channel between the implantation prosthese and biological tissue of human body, above-mentioned perforation is set as phase
Axially it is in transverse direction for femoral stem shank body and/or diagonally distributes multiple.
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.
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.
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 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 millimeter, 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 millimeter, 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 common process such as sintering, realization are fixed to one another with above-mentioned femoral stem shank body two sides.
The invention has the following advantages:
(1) the present invention provides a kind of compound hip joint, in building block, via barb, L shape through-hole and mounting hole etc.
The interaction of component had not only realized being interconnected and fixed between neck of femur and femoral stem, but also made between the two as needed
It can be split.In addition, the tapered protrusion being arranged in the middle part of its femoral stem shank body, it is therefore prevented that the opposite fortune between femoral stem and femur
It is dynamic, in conjunction with stronger；Its neck of femur has a variety of variable formats, has adapted to the individual demand of different patients.
(2) the filling interlayer of in the middle part of the shank body of its femoral stem and lower part is made of multilevel hole material, and runs through shank body two sides；
The multilevel hole material is three-dimensional perforation (including every grade of hole three-dimensional perforation, holes at different levels three-dimensional perforation mutually), and connectivity obtains
Greatly improve, multiple functions demand of the material as biomimetic artificial bone is sufficiently met, for example, having both good structural mechanics
Performance and higher porosity, greatly alleviate dead load, enhance the efficient friendship of substance between the tissue of shank body two sides
It changes, greatly accelerates the convalescence after Miles operation, and in combination with through shank body and this channel of perforation for being connected with filling interlayer, into
One step enhances the efficient exchange of substance between shank body surrounding tissue.It fills interlayer, because being made of multilevel hole material,
Implantation increases the contact area between structure and femur early period, increases adhesive force, and the phase after the implantation, that vestibule is constituted,
The multistage gap of approximating anatomy's Tissue distribution structure, for tissue fast-growth provide it is good grow into space so that
Tissue is orderly, selectively enters gaps at different levels, and then forms multistage and grow into robust structure, is greatly promoted and is finished
The connective stability of structure also greatly reduces the rejection of human body, and the thus bad impression of bring, healing effect
More preferably faster, it, which more realizes tissue, can cover with inside configuration, eliminate cell stress barrier.
(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 structural schematic diagram of compound hip joint described in the embodiment of the present invention 1.
Fig. 2 is structural schematic diagram of the compound hip joint after splitting described in Fig. 1.
Fig. 3 is the A-A cross-sectional view in compound hip joint described in Fig. 1 in the middle part of femoral stem shank body.
Fig. 4 is structural schematic diagram of the compound hip joint after splitting described in the embodiment of the present invention 2.
Fig. 5 is the structural schematic diagram of compound 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 1-3, a kind of compound hip joint, it includes femoral stem 1, neck of femur 2, spring 5 and spiral shell
Bar 6；The lower part of its neck of femur 2 is integrally in positive bar shape, and top is set as biasing tilt column, and 2 lower part of neck of femur is equipped with barb 3；
L shape through-hole 4, and the mounting hole 7 being connected with longitudinal hole in L shape through-hole 4 are equipped in the head of its femoral stem 1；Its neck of femur 2
Lower part be plugged into L shape through-hole 4, and barb 3 hook be stuck in the transverse holes in L shape through-hole 4；Spring 5 is equipped in mounting hole 7,
5 one end of spring resists 2 lower part of neck of femur, is equipped with the screw rod 6 being connected in mounting hole 7 on the outside of the other end；The shank body of its femoral stem 1
Middle part is provided with tapered protrusion 8 close to the side of neck of femur 2；In the middle part of the shank body of its femoral stem 1 and lower part is provided with passes through respectively
Wear the filling interlayer 9 of shank body two sides, and through shank body and the perforation 10 that is connected with filling interlayer 9, which is opposite
It is axially in laterally and to diagonally distribute multiple in 1 shank body of femoral stem；Filling in this example in the middle part of the shank body of its femoral stem 1 with lower part
Interlayer 9, used multilevel hole material are porous tantalum, it has three-level hole, wherein the first order for being uniformly distributed, being mutually communicated
There is the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of vestibule, is uniformly distributed in the cavity wall of second level vestibule, mutually
The third level vestibule of perforation；And vestibules at different levels also penetrate through each other each other, the perforation is three-dimensional perforation；Every grade of porous material
From for a continuous structure body, the maximum outer boundary of every level-one porous material is suitable with entire material body space boundary, and every grade more
Porous materials have physical and chemical performance alone.Total effective drainage porosity is 80%, and first order hole average pore size is 510 μm, in the first order
There is the second level hole of 25 μm of average pore size of perforation in the cavity wall in hole, there is average pore size 780nm to pass through in the cavity wall in second level hole
Logical third level hole.
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 XP26 Microbalance 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, can load many growth factors, the adhesive force between femur is also stronger,
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 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 real
Bone-regeneration material.
When installation, first the lower part of neck of femur 2 is directly inserted into the L shape through-hole 4 in 1 head of femoral stem, and make barb 3
Hook is stuck in the transverse holes in L shape through-hole 4, then spring 5 and screw rod 6 are successively installed in mounting hole 7；Its 5 one end of spring resists
2 lower part of neck of femur, so that barb 3 tightly hooks in the transverse holes being stuck in L shape through-hole 4, the other end is limited through screw rod 6, is played
Firm effect, and its connection type 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
Lower part is integrally in positive bar shape, and top is set as biasing tilt column, and 2 lower end of neck of femur consists of two parts, wherein one
It is divided into resilient barb 3, another part is column, and spaced slot is equipped between resilient barb 3 and column；Its femoral stem 1
Head in be equipped with L shape through-hole 4；The lower part of its neck of femur 2 is plugged into L shape through-hole 4, and the hook of resilient barb 3 is stuck in L shape through-hole
In transverse holes in 4；Side in the middle part of the shank body of its femoral stem 1 close to neck of femur 2 is provided with tapered protrusion 8；Its femoral stem 1
In the middle part of shank body and lower part is provided with the filling interlayer 9 through shank body two sides respectively, and through shank body and with filling 9 phase of interlayer
The perforation 10 of connection, it is axially in laterally and to diagonally distribute multiple which, which is relative to 1 shank body of femoral stem,；Its stock in this example
In the middle part of the shank body of bone handle 1 and the filling interlayer 9 of lower part, used multilevel hole material are POROUS TITANIUM, it has three-level hole,
In, it is uniformly distributed, has the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of first order vestibule that is mutually communicated, second
There is the third level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of grade vestibule；And vestibules at different levels also penetrate through each other each other, it is described
Perforation be three-dimensional perforation.Every grade of porous material from being a continuous structure body, the maximum outer boundary of every level-one porous material with it is whole
A material body space boundary is suitable, and every grade of porous material has physical and chemical performance alone.Total effective drainage porosity is 75%, first
Grade hole average pore size is 450 μm, has the second level hole of 30 μm of average pore size of perforation in the cavity wall in first order hole, in the second level
There is the third level hole of the perforation of average pore size 670nm in the cavity wall in 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 XP26 Microbalance 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, by the lower part of neck of femur 2
When being inserted into the L shape through-hole 4 in 1 head of femoral stem, due between the resilient barb 3 and column of 2 lower end of neck of femur
Equipped with spaced slot, therefore, resilient barb 3 can be deviated to spaced slot side during installation；When installed, resilient barb
3 i.e. homings are set, and are hooked and be stuck in the transverse holes in L shape through-hole 4.In addition, according to the actual conditions of different patients, selection control
Tilt angle A between 2 top and the bottom length L and neck of femur of biasing tilt column in 2 top of neck of femur processed, i.e., so that neck of femur 2
A variety of variable specifications are provided with, the individual demand of different patients has been adapted to.
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 screw rod
6；The lower part of its neck of femur 2 is integrally in positive bar shape, and top is set as biasing tilt column, and 2 lower part of neck of femur is equipped with barb 3；Its
L shape through-hole 4, and the mounting hole 7 being connected with longitudinal hole in L shape through-hole 4 are equipped in the head of femoral stem 1；Its neck of femur 2
Lower part is plugged into L shape through-hole 4, and the hook of barb 3 is stuck in the transverse holes in L shape through-hole 4；Spring 5, bullet are equipped in mounting hole 7
5 one end of spring resists 2 lower part of neck of femur, is equipped with the screw rod 6 being connected in mounting hole 7 on the outside of the other end；In the shank body of its femoral stem 1
Portion and lower part are provided with the filling interlayer 9 through shank body two sides respectively, and be connected through shank body and with filling interlayer 9
Perforation 10, it is axially in laterally and to diagonally distribute multiple which, which is relative to 1 shank body of femoral stem,；Its femoral stem 1 in this example
Shank body in the middle part of and lower part filling interlayer 9, used multilevel hole material is same as Example 1.
Claims (57)
1. a kind of compound hip joint, it includes femoral stem (1) and neck of femur (2), it is characterised in that: under the neck of femur (2)
Portion is equipped with barb (3)；L shape through-hole (4) is equipped in the head of the femoral stem (1)；The lower part of the neck of femur (2) is plugged into institute
It states in L shape through-hole (4), and the barb (3) hook is stuck in the transverse holes in the L shape through-hole (4)；The femoral stem (1)
In the middle part of shank body and lower part is provided with the filling interlayer (9) through shank body two sides respectively, and through shank body and with filling interlayer
(9) perforation (10) being connected；The filling interlayer (9) is made of multilevel hole material.
2. compound hip joint as described in claim 1, it is characterised in that: the head of the femoral stem (1) is additionally provided with and the L shape
The mounting hole (7) that longitudinal hole is connected in through-hole (4)；It is had additional spring (5) in the mounting hole (7), spring (5) one end resists
Neck of femur (2) lower part, other end outside have additional the screw rod (6) being connected in mounting hole (7).
3. compound hip joint as claimed in claim 1 or 2, it is characterised in that: close to described in the middle part of the shank body of the femoral stem (1)
The side of neck of femur (2) is provided with tapered protrusion (8).
4. compound 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 cylinder
Shape, top are set as biasing tilt column.
5. compound hip joint as claimed in claim 3, it is characterised in that: the lower part of the neck of femur (2) is integrally in positive bar shape,
Top is set as biasing tilt column.
6. compound hip joint as claimed in claim 1 or 2, it is characterised in that: the perforation (10) is arranged with respect to femoral stem
(1) shank body is axially in transverse direction and/or diagonally distributes multiple.
7. compound hip joint as claimed in claim 3, it is characterised in that: the perforation (10) is arranged with respect to femoral stem (1)
Shank body is axially in transverse direction and/or diagonally distributes multiple.
8. compound hip joint as claimed in claim 4, it is characterised in that: the perforation (10) is arranged with respect to femoral stem (1)
Shank body is axially in transverse direction and/or diagonally distributes multiple.
9. compound hip joint as claimed in claim 5, it is characterised in that: the perforation (10) is arranged with respect to femoral stem (1)
Shank body is axially in transverse direction and/or diagonally distributes multiple.
10. compound 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
11. compound 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
12. compound hip joint as claimed in claim 4, 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
13. compound hip joint as claimed in claim 5, 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
14. compound hip joint as claimed in claim 6, 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
15. compound hip joint as claimed in claim 7, 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
16. compound hip joint as claimed in claim 8, 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
17. compound hip joint as claimed in claim 9, 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；The unit grade volume refers to cubic centimetre grade or cubic millimeter grade.
18. compound hip joint as claimed in claim 10, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
19. compound hip joint as claimed in claim 11, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
20. compound hip joint as claimed in claim 12, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
21. compound hip joint as claimed in claim 13, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
22. compound hip joint as claimed in claim 14, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
23. compound hip joint as claimed in claim 15, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
24. compound hip joint as claimed in claim 16, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
25. compound hip joint as claimed in claim 17, 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；The multilevel hole material,
Intracorporal every grade of porous material is from being a continuous structure body, and the maximum outer boundary of its every level-one porous material and entire material sheet
The space boundary of body is suitable.
26. compound hip joint as claimed in claim 10, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
27. compound hip joint as claimed in claim 11, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
28. compound hip joint as claimed in claim 12, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
29. compound hip joint as claimed in claim 13, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
30. compound hip joint as claimed in claim 14, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
31. compound hip joint as claimed in claim 15, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
32. compound hip joint as claimed in claim 16, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
33. compound hip joint as claimed in claim 17, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
34. compound hip joint as claimed in claim 18, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
35. compound hip joint as claimed in claim 19, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
36. compound hip joint as claimed in claim 20, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
37. compound hip joint as claimed in claim 21, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
38. compound hip joint as claimed in claim 22, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
39. compound hip joint as claimed in claim 23, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
40. compound hip joint as claimed in claim 24, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
41. compound hip joint as claimed in claim 25, it is characterised in that: the vestibule refers in uniform distribution in the multistage
Porous materials take up an official post the volume taken no more than 1 cubic millimeter and each said three-dimensional body of same size, their quality are substantially suitable.
42. compound hip joint as claimed in claim 26, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
43. compound hip joint as claimed in claim 27, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
44. compound hip joint as claimed in claim 28, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
45. compound hip joint as claimed in claim 29, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
46. compound hip joint as claimed in claim 30, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
47. compound hip joint as claimed in claim 31, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
48. compound hip joint as claimed in claim 32, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
49. compound hip joint as claimed in claim 33, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
50. compound hip joint as claimed in claim 34, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
51. compound hip joint as claimed in claim 35, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
52. compound hip joint as claimed in claim 36, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
53. compound hip joint as claimed in claim 37, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
54. compound hip joint as claimed in claim 38, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
55. compound hip joint as claimed in claim 39, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
56. compound hip joint as claimed in claim 40, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
57. the compound hip joint as described in claim 41, it is characterised in that: the quality quite refers in multilevel hole material substantially
The multiple volumes taken of taking up an official post are not more than the said three-dimensional body of 1 cubic millimeter of same size, claim its quality respectively, obtain their quality
Average value, and any three-dimensional weight is not more than said three-dimensional body mass average value relative to the absolute value of the bias of mass average value
4%。
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| CN201510991684.0A CN106913404B (en) | 2015-12-25 | 2015-12-25 | A kind of compound hip joint |
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| CN201510991684.0A CN106913404B (en) | 2015-12-25 | 2015-12-25 | A kind of compound hip joint |
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Family Cites Families (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 |
| WO2005087142A2 (en) * | 2004-03-11 | 2005-09-22 | Amit Mor | Rotatable head of enarthrotic prosthesis |
| KR100932949B1 (en) * | 2008-07-14 | 2009-12-21 | 한국기계연구원 | Porous ceramic ball including hierarchically porous structure and the 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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2015
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