CN106913403A - A kind of artificial hip joint - Google Patents
A kind of artificial hip joint Download PDFInfo
- Publication number
- CN106913403A CN106913403A CN201510991419.2A CN201510991419A CN106913403A CN 106913403 A CN106913403 A CN 106913403A CN 201510991419 A CN201510991419 A CN 201510991419A CN 106913403 A CN106913403 A CN 106913403A
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- CN
- China
- Prior art keywords
- hole
- femoral stem
- vestibule
- hip joint
- artificial hip
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- 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
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of 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 artificial hip joint.It includes femoral stem（1）And neck of femur（2）, it is characterised in that：The femoral stem（1）Head in be provided with L-shaped through hole（7）；The neck of femur（2）Bottom grafting be coupled to the L-shaped through hole（7）It is interior；The femoral stem（1）Middle part appearance surrounding be enclosed with one layer of adhesion layer being made of multilevel hole material（3）；The femoral stem（1）Lower end be made up of two parts, a portion is and femoral stem（1）The cylinder being coaxially disposed（10）, another part is and femoral stem（1）The ring-type product of the interruption being coaxially disposed（11）, and the interruption ring-type product（11）Minimum diameter be more than the cylinder（10）Maximum outside diameter.Reasonable in design of the present invention, has connective stability and biocompatibility higher concurrently 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 artificial hip joint.
Background technology
At present, existing artificial hip joint is mostly unitary design, although this structure have the advantages that it is easily processed into type,
If but occur its individual sites fracture such as neck fracture situation in application, its structure allomeric function will be caused to fail,
This undoubtedly causes huge waste.Additionally, existing artificial hip joint is also present connect steady between implantation early stage and tissue
It is qualitative not high, easily loosen, rotate and come off；Easily there is stress concentration in replacement prosthesis, easily cause replacement prosthesis to be broken
Failure；Biocompatibility is poor, and easily repulsion is produced with tissue after implantation, the general character problem such as service life is shorter, these
Problem is difficult to whole realizations by optimizing structure design merely.
Porous material has the characteristics such as relative density is low, specific strength is high, specific surface area is high, lightweight, good penetrability, is changing
The numerous areas such as work, medicine have a wide range of applications.In the porous material, multilevel hole material is due to its unique performance --- and it is same
When there is the advantage in holes at different levels, and there is the advantage not available for the material in single hole simultaneously, thus obtained increasing
Concern.For example, the macropore (aperture ＞ 50nm) with three-dimensional order-mesoporous (2nm ＜ apertures ＜ 50nm)-micropore (hole
Footpath ＜ 2nm) structure molecular sieve, combine multi-stage artery structure and molecular sieve both advantages nanocrystalline, impart molecule
The more open three-dimensional open-framework of sieve, while nano molecular sieve crystal substantially reduces mass transfer path, is effectively improved
The materialization activity of gained molecular sieve；SiO with hierarchy mesopore-macropore2Material can be such as solid as immobilized biomolecule
The guest materials of lysozyme is carried, with the rate of adsorption and very big enzyme supported quantity very high.However, current joint prosthesis is put
Change the loose structure used in prosthese and be mostly single Porous materials, and it is even more extremely limited on the report from multilevel hole material.
This may in itself there is also along with the raising of porosity mainly due to existing porous material, and structural mechanics intensity can show
Write and decline, therefore porosity is generally relatively low, connectivity is relatively low, is unfavorable for the efficient exchange of material in tissue, biofacies
Capacitive is not good, conducts oneself with dignity heavier, and postoperative human feeling is not good, and space skewness causes mechanical strength, elastic modelling quantity etc.
Uneven distribution, causes the defects such as hidden danger of quality.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.Additionally, conduct is applied to biomimetic prosthetic
, it is necessary to material is uniform in itself, i.e., pore size, hole are evenly distributed for the multilevel hole material of bone, to cause performance uniformity,
But in fact, there is many multilevel hole materials not reach the requirement, its lack of uniformity；In spite of material call oneself reached compared with
Uniformity high, but its uniformity is still the uniformity under large volume yardstick, if carrying out measurement comparing with small size yardstick, than
Such as take up an official post in material and take the said three-dimensional body that polylith volume is not more than a cubic centimetre, its quality is surveyed respectively, its degree of irregularity difference
Still very big, various the performances such as mechanical strength, elastic modelling quantity etc. for thus resulting in multilevel hole material are uneven, so that seriously
Influence its function.
The content of the invention
It is an object of the invention to provide a kind of artificial hip joint, its reasonable in design has connection higher concurrently steady after implantation
Qualitative and biocompatibility, postoperation recovery effect is more preferable.
The purpose of the present invention is achieved through the following technical solutions：
A kind of artificial hip joint, it includes femoral stem and neck of femur, it is characterised in that：Set in the head of the femoral stem
There is L-shaped through hole；The bottom grafting of the neck of femur is coupled in the L-shaped through hole；The middle part appearance surrounding of the femoral stem
It is enclosed with one layer of adhesion layer being made of multilevel hole material；The lower end of the femoral stem is made up of two parts, wherein one
Part is the cylinder being coaxially disposed with femoral stem, and another part is the ring-type product of the interruption being coaxially disposed with femoral stem, and institute
State the maximum outside diameter of the minimum diameter more than the cylinder of the ring-type product of interruption.
While stress concentration phenomenon occurs after preventing shank body to be implanted into, for the structure for further enhancing femoral stem distal lower end is strong
Degree, the ring-type product of above-mentioned interruption is at most provided with four parts of interruption.
For convenience of the installation positioning action of product in operation implementation process, the head upper end of above-mentioned femoral stem has additional location hole.
To meet different patient personalized demands, to reach best installation effect requirement, the bottom of above-mentioned neck of femur is in integrally
Positive bar shape, top is set to bias tilt column；The lower end of above-mentioned neck of femur is made up of two parts, and a portion is bullet
Property barb, another part is column, and spaced slot is provided between resilient barb and column；The bottom of above-mentioned neck of femur
It is inserted into above-mentioned L-shaped through hole, and resilient barb is hooked and is stuck in the transverse holes on L-shaped through hole.According to the situation of different patients,
By controlling the angle of inclination between the length on neck of femur top, and neck of femur top and the bottom, you can make neck of femur that there is many
Variable specification is planted, to adapt to the demand of different patients.
Used as further selecting excellent, the above-mentioned multilevel hole material that above-mentioned adhesion layer is used specifically can be 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.And its
Maximum external boundary per one-level porous material is suitable with the space boundary of whole material body.I.e. every grade porous material can be made
For the porous material of one-level independence is present in body, and with its physical and chemical performance alone.Such structure can be caused respectively
The physical and chemical performance difference of level porous material, has different physical and chemical performances, more in the whole space of relatively-stationary material
Many functional requirements are met well.
More specifically, above-mentioned multilevel hole material, the cavity wall of higher level's vestibule can be made up of next stage porous material, so that hole
Chamber is layered step by step, and reasonable Arrangement vestibule structure and pore size；The cavity wall of higher level's vestibule can also be by the multistage of its subordinate
Porous material is compound to be constituted, or is constituted by the porous materials at different levels of its subordinate are compound, to cause that material meets specific function
Demand.
More specifically, above-mentioned unit level volume refers to cubic centimetre level or cubic millimeter level or more subsection level volume.
More specifically, above-mentioned vestibule refers to be not more than 1 cube in the take up an official post volume that takes of the multilevel hole material in uniform distribution
Centimetre formed objects said three-dimensional body, their quality are substantially suitable.
More specifically, above-mentioned quality quite refers to be not more than 1 cube li in take up an official post multiple volumes for taking of multilevel hole material substantially
The said three-dimensional body of the formed objects of rice, claims its quality respectively, obtains the average value of their quality, and any three-dimensional weight is relative
It is not more than the 4% of said three-dimensional body mass average value in the absolute value of the bias of mass average value.
Above-mentioned multilevel hole material in the present invention, can be specifically made of conventional medical metal, alloy and the material such as nonmetallic.
The present invention has following beneficial effect：
(1) the invention provides a kind of artificial hip joint, its neck of femur has various variable specifications, has adapted to different trouble
The individual demand of person；Card is hooked in structure with the plug-in type of L-shaped through hole by resilient barb between neck of femur and femoral stem to act on,
And connection is combined together, it is therefore prevented that neck of femur departs from from femoral stem；And when the situations such as fracture occurs in neck, again can be real
Now neck of femur is separated with femoral stem, it is to avoid cause because of component failure integrally-built failure to waste.Additionally, logical
Cross and constitute the cylinder and interruption ring-type product two parts that the lower end of its femoral stem is arranged to by being coaxially disposed with femoral stem,
Both the stress concentration phenomenon after having prevented shank body to be implanted into occurs, and enhances the structural strength at the position again, it is to avoid postoperative to use
It is middle to be easily deformed because of stress.
(2) adhesion layer of its femoral stem middle part appearance parcel, is made up of multilevel hole material；The multilevel hole material is that three-dimensional is passed through
Logical (including every grade of hole three-dimensional insertion, holes at different levels three-dimensional insertion mutually), its connectivity is greatly improved, fully full
Foot various functional requirements of the material as biomimetic artificial bone, for example, having good structural mechanical property and higher concurrently simultaneously
Porosity, greatly alleviates dead load, enhances the efficient exchange of material between tissue, greatly accelerates postoperative extensive
The multiple phase；And adhered to by the parcel of this specific region of appearance in the middle part of femoral stem so that by the multilevel hole material be made it is attached
Layer, before implantation the phase increase the contact area between its structure and femur, increase adhesive force, it is therefore prevented that femoral stem occur
Rotation, and phase after the implantation, due to the approximate trabecular bone structure of distribution mode in the multistage space that its structure mesoporous chamber is constituted, because
And for the fast-growth of tissue provides the good space that grows into so that tissue enters the positions such as spaces at different levels, enters
And form multistage and grow into robust structure, the connective stability of structure is greatly improved, also greatly reduce the row of human body
Reprimand reaction, and the bad impression for thus bringing, its healing effect are more preferable.
(3) also the vestibule of multilevel hole material is evenly distributed in the present invention and proposes the metric form of specific, concrete, specify that
It is the pore size distribution uniformity that multilevel hole material is measured under compared with the yardstick of subsection level volume, such multilevel hole material is high
Degree is uniform, so as to ensure that the uniformity consistency of the various performances of multilevel hole material, it is to avoid the internal flaw of selection.
Brief description of the drawings
Fig. 1 is the structural representation of artificial hip joint described in the embodiment of the present invention 1.
Fig. 2 is the A-A sectional views of femoral stem lower end structure in artificial hip joint described in Fig. 1.
Fig. 3 is the structural representation of artificial hip joint described in the embodiment of the present invention 2.
Fig. 4 is the A-A sectional views of femoral stem lower end structure in artificial hip joint described in Fig. 3.
Fig. 5 is the structural representation of artificial hip joint described in the embodiment of the present invention 3.
Specific embodiment
Premised on technical solution of the present invention, its detailed implementation method is following present, but protection scope of the present invention is not only
It is limited to embodiment disclosed below.In the case of not departing from and changing above-mentioned technological thought of the invention, according to the common skill of this area
Art knowledge and/or customary means, it is clear that the replacement or change of diversified forms can also be made, and model of the invention all should be included in
Within enclosing.
Embodiment 1
As shown in Figure of description 1-2, a kind of artificial hip joint, it includes femoral stem 1 and neck of femur 2；Its neck of femur 2
Bottom integrally be in positive bar shape, top be set to bias tilt column；The lower end of its neck of femur 2 is made up of two parts, its
A middle part is resilient barb 4, and another part is that a space is provided between column 5, and resilient barb 4 and column 5
Gap 6；L-shaped through hole 7 is provided with the head of its femoral stem 1, and the head upper end of the femoral stem 1 has additional location hole 8；
The bottom of its neck of femur 2 is inserted into L-shaped through hole 7, and resilient barb 4 is hooked and is stuck in the transverse holes 9 on L-shaped through hole 7；
The middle part appearance surrounding of its femoral stem 1 is enclosed with one layer of adhesion layer 3 being made of multilevel hole material；Under its femoral stem 1
Portion end is made up of two parts, and a portion is the solid cylinder 10 being coaxially disposed with femoral stem 1, another part be with
Be coaxially disposed the four circular products 11 of interruption of femoral stem 1, and the circular product 11 of interruption internal diameter more than solid
The external diameter of cylinder 10；The multilevel hole material that adhesion layer 3 is used in the present embodiment is POROUS TITANIUM, with three-level hole, its
In, there is the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of the first order vestibule be uniformly distributed, being mutually communicated, the
There is the third level vestibule for being uniformly distributed, being mutually communicated in the cavity wall in second hole chamber；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, per the maximum external boundary of one-level porous material
Suitable with whole material body space boundary, every grade of porous material is with physical and chemical performance alone.Total effective drainage porosity is 75%,
First order hole average pore size is 450 μm, there is the second level hole of the insertion of 30 μm of average pore size in the cavity wall in first order hole,
There is the third level hole of 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 XP26Microbalance balances, as a result as shown in table 1, 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 1 understands that its mass deviation is not more than 4%.
Table 1
| Piece number | Quality (mg) | Relative to the absolute value of the bias (%) of average value |
| 1 | 1156.184 | 1.4% |
| 2 | 1135.077 | 3.2% |
| 3 | 1151.493 | 1.8% |
| 4 | 1157.356 | 1.3% |
| 5 | 1145.630 | 2.3% |
| 6 | 1217.159 | 3.8% |
| 7 | 1197.225 | 2.1% |
| 8 | 1191.362 | 1.6% |
| 9 | 1201.915 | 2.5% |
| Mass average value | 1172.600 |
The preparation method of this kind of POROUS TITANIUM is：
(1) material prepares
It is raw material for 2 μm of titanium valve to use particle diameter, and particle diameter is the minimum one-level of the starch as multilevel hole material to be made of 770nm
The pore creating material of vestibule, with the stearic acid that particle diameter is 770nm as adhesive, according to titanium valve：Starch：Stearic acid：Distilled water
By volume 3：1：1：11 are configured to slurry.
Using a diameter of 30 μm of polyester form of rib, by the slurry, with foam impregnation method, uniformly filling wherein, forms base substrate
And dry, then crush and obtain the hybrid particles containing raw material, pore creating material and polyester form that particle is 30 μm.
(2) by methylcellulose that hybrid particles, particle diameter are 30 μm by volume 3：Equably poured into after 1 uniform mixing
During a diameter of 560 ± 20 μm of rib, aperture are for the polyester form of 400 ± 15 μm of three-dimensional insertion, then polyester form is put into
Closed mold is pressed into dense green.
(3) by dense green vacuum-sintering；Base substrate after sintering carries out conventional subsequent heat treatment according to titanium technique to be had
There is the POROUS TITANIUM in three-level hole.
Used as bone-regeneration material, first order hole size is particularly suitable for meeting the demand that the vital tissues such as blood vessel grow into this kind of POROUS TITANIUM；
Second level hole is particularly suitable for living away from home for various kinds of cell；Third level hole is particularly conducive to meet cell because of its substantial amounts of nano-pore
Stick, differentiation demand, and specific surface area is very big, can load many growth factors, and the adhesive force between femur is also stronger,
And, the connectivity in hole is good, and holes at different levels are each mutually communicated and hole at different levels also insertion each other each other, can fully meet blood
Liquid, the infiltration of tissue fluid, transmission, realize the discharge of protein degradation products and metabolism product, therefore it is a kind of true
Positive bone-regeneration material.Additionally, according to the actual conditions of different patients, selection control neck of femur 2 top biasing tilt column
Angle of inclination A between length L, and the top and the bottom of neck of femur 2, that is, cause that neck of femur 2 is provided with various variable specifications,
The individual demand of different patients is adapted to.
Embodiment 2
As shown in Figure of description 3-4, a kind of artificial hip joint, it includes femoral stem 1 and neck of femur 2；Its neck of femur 2
Bottom integrally be in positive bar shape, top be set to bias tilt column；The lower end of its neck of femur 2 is made up of two parts, its
A middle part is resilient barb 4, and another part is that a space is provided between column 5, and resilient barb 4 and column 5
Gap 6；L-shaped through hole 7 is provided with the head of its femoral stem 1；The bottom of its neck of femur 2 is inserted into L-shaped through hole 7, and
Resilient barb 4 is hooked and is stuck in the transverse holes 9 on L-shaped through hole 7；The middle part appearance surrounding of its femoral stem 1 is enclosed with one layer and adopts
The adhesion layer 3 being made of multilevel hole material；The lower end of its femoral stem 1 is made up of two parts, and a portion is and stock
The solid square body 10 that bone handle 1 is coaxially disposed, another part is the circular system of two interruptions being coaxially disposed with femoral stem 1
Part 11, and interruption circular product 11 internal diameter more than solid square body 10 maximum outside diameter；Adhesion layer in the present embodiment
3 multilevel hole materials for being used are porous tantalum, with three-level hole, wherein, the first order vestibule be uniformly distributed, being mutually communicated
Cavity wall on have the second level vestibule for being uniformly distributed, being mutually communicated, be uniformly distributed in the cavity wall of second level vestibule, mutually passed through
Logical third level vestibule；And vestibules at different levels also insertion each other each other, described insertion is three-dimensional insertion；Every grade of porous material
From being a continuous structure body, the maximum external boundary per one-level porous material is suitable with whole 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, first
There is the second level hole of the insertion of 25 μm of average pore size in the cavity wall in level hole, have average pore size in the cavity wall in second level hole
The third level hole of 780nm insertions.
Taken up an official post in the multilevel hole material with conventional machining method and take 9 the three of the same size of 10mm × 10mm × 10mm
Dimension body, its quality is tested with plum Teller-support benefit XP26Microbalance balances, as a result as shown in table 2, 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 2, its mass deviation is not more than 4%.
Table 2
| Piece number | Quality (mg) | Relative to the absolute value of the bias (%) of average value |
| 1 | 3282.624 | 1.6% |
| 2 | 3292.63 | 1.3% |
| 3 | 3242.592 | 2.8% |
| 4 | 3265.944 | 2.1% |
| 5 | 3285.960 | 1.5% |
| 6 | 3469.440 | 4% |
| 7 | 3409.392 | 2.2% |
| 8 | 3396.048 | 1.8% |
| 9 | 3379.368 | 1.3% |
| Mass average value | 3336 |
The preparation method of this kind of material is：
(1) material prepares
It is the polystyrene sphere of 900 ± 30nm to choose particle diameter, is assembled the colloid template to form three-dimensional order arrangement, system
Standby tantalum nanocrystal solution, tantalum nanocrystal solution is introduced into the three-dimensional colloid template that polystyrene sphere is made, by three-dimensional colloid
The mixture of template/tantalum nanocrystal solution is dried, and is then broken for the particle that particle diameter is 5 μm；
(2) starch that particle diameter is 900 ± 30nm is taken, according to part by weight 1：40 mix with distilled water, are made starch molten
Liquid, by ethyl cellulose that above-mentioned particle, particle diameter are 35 μm and starch solution according to part by weight 12：1：8 are made slurry,
It is uniformly impregnated with to aperture as on 600 ± 20 μm of polyester form；
(3) polyester form after dipping is sintered in vacuum or protective atmosphere, conventional follow-up place is carried out according still further to tantalum technique
Reason, is obtained the porous tantalum with three-level hole.
Similar to embodiment 1, this kind of material is particularly suitable for doing bone-regeneration material；In when occur neck fracture etc. situation
When, can be stretched into transverse holes 9 with instrument, resilient barb 4 is promoted to the side of spaced slot 6, to cause resilient barb 4
Hook card effect is lost and transverse holes 9 between, that is, is realized neck of femur 2 is separated with femoral stem 1, it is to avoid because of neck
Fracture etc. component failure and cause it is integrally-built failure waste.
Embodiment 3
As shown in Figure of description 5, a kind of artificial hip joint, it includes femoral stem 1 and neck of femur 2；Its femoral stem 1
Head in be provided with L-shaped through hole 7；The bottom of its neck of femur 2 is positive cylinder, and top is biasing tilt column；Its neck of femur 2
Bottom be plugged into via interference fit in L-shaped through hole 7；The middle part appearance surrounding of its femoral stem 1 is enclosed with one layer of use
The adhesion layer 3 that multilevel hole material is made；The lower end of its femoral stem 1 is made up of two parts, and a portion is and femur
The solid cylinder 10 that handle 1 is coaxially disposed, another part is four circular products of interruption being coaxially disposed with femoral stem 1
11, and interruption circular product 11 internal diameter more than solid cylinder 10 external diameter；Adhesion layer 3 is adopted in the present embodiment
Multilevel hole material is same as Example 1.
In when there are the situations such as neck fracture, can be stretched into transverse holes 9 with instrument, by the bottom of neck of femur 2 to L-shaped
Enforce the upper end of through hole 7, you can so that losing mating reaction between the bottom of neck of femur 2 and L-shaped through hole 7, that is, realize
Neck of femur 2 is separated with femoral stem 1.
Claims (10)
1. a kind of artificial hip joint, it includes femoral stem（1）And neck of femur（2）, it is characterised in that：The femoral stem（1）Head in be provided with L-shaped through hole（7）；The neck of femur（2）Bottom grafting be coupled to the L-shaped through hole（7）It is interior；The femoral stem（1）Middle part appearance surrounding be enclosed with one layer of adhesion layer being made of multilevel hole material（3）；The femoral stem（1）Lower end be made up of two parts, a portion is and femoral stem（1）The cylinder being coaxially disposed（10）, another part is and femoral stem（1）The ring-type product of the interruption being coaxially disposed（11）, and the interruption ring-type product（11）Minimum diameter be more than the cylinder（10）Maximum outside diameter.
2. artificial hip joint as claimed in claim 1, it is characterised in that：The ring-type product of the interruption（11）At most it is provided with four parts of interruption.
3. artificial hip joint as claimed in claim 1 or 2, it is characterised in that：The femoral stem（1）Head upper end have additional location hole（8）.
4. the artificial hip joint as described in claim 1-3 is any, it is characterised in that：The neck of femur（2）Bottom integrally be in positive bar shape, top be set to bias tilt column；The neck of femur（2）Lower end be made up of two parts, a portion is resilient barb（4）, another part is column（5）, and resilient barb（4）With column（5）Between be provided with spaced slot（6）；The neck of femur（2）Bottom be inserted into the L-shaped through hole（7）It is interior, and resilient barb（4）Hook is stuck in L-shaped through hole（7）On transverse holes（9）It is interior.
5. the artificial hip joint as described in claim 1-4 is any, it is characterised in that：The multilevel hole material, is made up of multistage porous material, including material body, body is the vestibule being classified with material pore size, and constituted around the cavity wall for forming vestibule, its vestibule is in uniform distribution, and subordinate's vestibule is set in the cavity wall for constituting higher level's vestibule in three dimensions；Vestibules at different levels are each mutually communicated and vestibule at different levels also insertion each other each other, and vestibule refers to that each vestibule is in uniform distribution under arbitrary unit level volume on multilevel hole material in uniform distribution.
6. artificial hip joint as claimed in claim 5, it is characterised in that：Described multilevel hole material, its intrinsic every grade of porous material is a continuous structure body certainly, and it is suitable with the space boundary of whole material body per the maximum external boundary of one-level porous material；Every grade of porous material is with physical and chemical performance alone in material body.
7. the artificial hip joint as described in claim 5 or 6, it is characterised in that：The cavity wall of higher level's vestibule in the multilevel hole material, or be made up of next stage porous material, or constituted by the multistage porous material of its subordinate is compound, or constituted by the porous materials at different levels of its subordinate are compound.
8. the artificial hip joint as described in claim 5-7 is any, it is characterised in that：The unit level volume refers to cubic centimetre level or cubic millimeter level or more subsection level volume.
9. artificial hip joint as claimed in claim 8, it is characterised in that：The vestibule refers to be not more than each said three-dimensional body of 1 cubic centimetre and formed objects in the take up an official post volume that takes of the multilevel hole material in uniform distribution, and their quality are substantially suitable.
10. artificial hip joint as claimed in claim 9, it is characterised in that：The quality quite refer to substantially multilevel hole material take up an official post multiple volumes for taking be not more than 1 cubic centimetre formed objects said three-dimensional body, claim its quality respectively, the average value of their quality is obtained, and any three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
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|---|---|---|---|---|
| US5702482A (en) * | 1991-11-19 | 1997-12-30 | Zimmer, Inc. | Implant fixation stem |
| US20100010513A1 (en) * | 2008-07-14 | 2010-01-14 | Korean Institute Of Machinery & Materials | Porous material having hierarchical porous structure and preparation method thereof |
| CN101677860A (en) * | 2006-12-12 | 2010-03-24 | 精密技术公司 | Restraining liner locking collar and polyethylene liner fitting |
| CN201806801U (en) * | 2010-09-21 | 2011-04-27 | 北京爱康宜诚医疗器材股份有限公司 | Furcal femoral handle |
| WO2011091466A1 (en) * | 2010-02-01 | 2011-08-04 | Maxx Health Inc | Artificial joint component having hollow interior and means for load dissipation |
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2015
- 2015-12-25 CN CN201510991419.2A patent/CN106913403B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5702482A (en) * | 1991-11-19 | 1997-12-30 | Zimmer, Inc. | Implant fixation stem |
| CN101677860A (en) * | 2006-12-12 | 2010-03-24 | 精密技术公司 | Restraining liner locking collar and polyethylene liner fitting |
| 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 |
| CN201806801U (en) * | 2010-09-21 | 2011-04-27 | 北京爱康宜诚医疗器材股份有限公司 | Furcal femoral handle |
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