CN109662808A - A kind of hip prosthesis - Google Patents
A kind of hip prosthesis Download PDFInfo
- Publication number
- CN109662808A CN109662808A CN201910154440.5A CN201910154440A CN109662808A CN 109662808 A CN109662808 A CN 109662808A CN 201910154440 A CN201910154440 A CN 201910154440A CN 109662808 A CN109662808 A CN 109662808A
- Authority
- CN
- China
- Prior art keywords
- potsherd
- backing
- group
- bulb
- hip prosthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005299 abrasion Methods 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims description 25
- 239000000956 alloy Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000003462 bioceramic Substances 0.000 claims description 4
- 230000007774 longterm Effects 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 229920002627 poly(phosphazenes) Polymers 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 20
- 210000004394 hip joint Anatomy 0.000 abstract description 14
- 230000033001 locomotion Effects 0.000 abstract description 12
- 210000001624 hip Anatomy 0.000 abstract description 11
- 238000013467 fragmentation Methods 0.000 abstract description 5
- 238000006062 fragmentation reaction Methods 0.000 abstract description 5
- 229910021645 metal ion Inorganic materials 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 description 11
- 210000001124 body fluid Anatomy 0.000 description 9
- 239000010839 body fluid Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 2
- 210000000588 acetabulum Anatomy 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008467 tissue growth Effects 0.000 description 2
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 2
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 208000023803 Hip injury Diseases 0.000 description 1
- 206010060820 Joint injury Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000649 photocoagulation Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- A61F2/34—Acetabular cups
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30375—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess with an intermediate bushing or sleeve between the moving parts
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/30673—Lubricating means, e.g. synovial pocket
-
- 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
- A61F2/34—Acetabular cups
- A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
Abstract
The invention discloses a kind of hip prosthesis, including bulb and domed backing, the inside of the backing is equipped with the potsherd for reducing backing and bulb abrasion, the bottom end of the potsherd and the inside of backing are welded to connect, the potsherd is one group of potsherd of dispersed placement, and it is secondary that the outer concave curved surface of potsherd and the appearance face contact of bulb constitute friction.Alternatively, further including potsherd and supporting mass, the potsherd is one group of potsherd, one group of potsherd is distributed across on supporting mass, the inside of the backing is equipped with groove, and for groove for accommodating supporting mass, it is secondary that the outer concave curved surface of the potsherd and the appearance face contact of bulb constitute friction.Reduce the abrasion between backing and bulb, reduces ceramic fragmentation risk, reduce Metal ion release, increase artificial hip joint motion range, extend hip prosthesis service life.
Description
Technical field
The present invention relates to biomedical engineering orthopaedics implant prosthese technical fields, false more particularly, to a kind of hip joint
Body.
Background technique
Replacement of Hip Joint is that a kind of effective clinic of Hip injury caused by treating because of wound or disease is controlled
Treatment method.Artificial hip joint system is made of acetabular bone and joint handle, bulb.Common acetabular bone is made of metal backing and liner,
Backing material is metal, and inner lining material is metal, ceramics and high molecular material, and bulb material is metal and ceramics.Bulb with it is interior
Lining contact constitutes friction pair.
The artificial hip joint clinically used at present has following several types: 1, metal ball-head and metal inner lining match pair, this
The friction formed with pair is secondary in long-term process of friction and wear, and there are the precipitations of toxic metal ion, accumulate and arrive in human body
A certain concentration will lead to chronic disease, while wear debris can induce the bone tissue of Periprosthetic to generate bone dissolution；2, metal or
With pair, this matches, and the secondary friction formed is secondary to keep the wear rate of macromolecular lining very high, most common for ceramic bulb and macromolecular lining
High molecular material is ultra-high molecular weight polyethylene, and a year abrasion loss is about 0.2mm, in long-term friction process, will lead to height
The thickness of molecule liner is constantly reduced, and then influences the intensity of liner, this artificial joint system produces the big motion range in joint
With the contradiction of mechanical strength, in order to solve this contradiction, thickness of inner lining must thicken, and thus necessarily lead to the ball with liner cooperation
The diameter of head is reduced, so the motion range of articular system can be reduced, and then is led to abarticulation, is caused to fail；3, Ceramic Balls
Head is with ceramic-lined with pair, this friction pair with secondary composition, experiments have shown that abrasion is minimum, while ceramics have inertia and well
Biocompatibility, thus the artificial hip joint system of ceramic-on-ceramic becomes the first choice of current clinical use.But due to ceramic material
The brittleness of material inherently is easy to cause fragmentation if thickness is thin, and in order to overcome this disadvantage, ceramic-lined thickness must add
Thickness, usually about 8~10mm, but the problem of matched ceramic ball size has to become smaller is thereby produced, to limit
The motion range of artificial hip joint has been made, and then abarticulation occurs, joint prosthesis is caused to fail.
Research shows that some daily behaviors of Asian movement motion range to be significantly greater than west ethnic group, especially squat and
It kneels, therefore Asian needs bigger bulb diameter, namely thinner acetabular bone liner especially.
Therefore, building has the ceramic-on-ceramic Novel artificial hip joint system of large scale bulb and ultra-thin acetabular bone wall of cup,
Increase the motion range of artificial hip joint, reduce lined ceramics fragmentation and abrasion loss, improve its service life, is to improve patient's life
The necessity of quality is ordered, and one of the problem of urgent need to resolve at present.
Summary of the invention
In view of the shortcomings of the prior art, technical problem to be solved by the invention is to provide a kind of hip prosthesis, to reach
Reduce the abrasion between backing and bulb, reduce ceramic fragmentation risk, reduce Metal ion release, increases artificial hip joint movement
Range extends the purpose of hip prosthesis service life.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is as follows:
The hip prosthesis, including bulb and domed backing, the inside of the backing be equipped with for reduce backing with
The potsherd of bulb abrasion, the bottom end of the potsherd and the inside of backing are connected using welding manner, and the potsherd is point
The one group of potsherd set is spread, it is secondary that the outer concave curved surface of potsherd and the appearance face contact of bulb constitute friction；
Alternatively, further including potsherd and supporting mass, the potsherd is one group of potsherd, and one group of potsherd is distributed across
On supporting mass, the inside of the backing is equipped with groove, and groove is for accommodating supporting mass, the outer concave curved surface and bulb of the potsherd
Appearance face contact to constitute friction secondary.
Preferably, the outer concave curved surface of one group of potsherd is in same curved surface.
Preferably, the supporting mass is high molecular polymer, the outer surface of high molecular polymer is lower than potsherd
Outer concave curved surface.
Preferably, the shape of one group of potsherd can be cylinder and/or polygon prism.
Preferably, the outer surface of the bulb is equipped with one group of hole for storing human body fluid.
Preferably, the outer surface of the backing, which is equipped with, is suitable for tissue growth, convenient for biology connection, enhancing
One group of hole of clinical long-term connection effect.
Preferably, the bulb and backing can be titanium and its alloy or tantalum and its alloy or medical stainless steel or cobalt chromium
Alloy, potsherd are bioceramic.
Preferably, the outer peripheral surface of the potsherd and high molecular polymer connected component is equipped with groove or protrusion.
Preferably, one group of potsherd non-uniform spacing arrangement.
Preferably, the groove on the potsherd is helicla flute.
Compared with prior art, the present invention having the advantage that
The monoblock type ceramics that upper dispersed placement has several potsherds to replace thickness big on the inside of domed backing in the present invention
Liner reduces the whole wall thickness of manual acetabulum, improves the diameter of bulb, to increase the motion range of artificial hip joint；Swash
Photocoagulation reduces the distance between potsherd, increases the contact area of potsherd and bulb, to reduce single ceramic cylinder
The pressure of receiving solves the problems, such as that liner is the fragmentation of monoblock type ceramics；The quality for mitigating hip joint, keeps patient motion lighter
Ingeniously；There is the miniature pit for storing lubrication body fluid on bulb surface, while having gap between potsherd, and gap can accommodate lubrication
Body fluid reduces the abrasion loss of bulb and potsherd；It is equipped with high molecular polymer between potsherd, there is certain shock resistance
Property and Noise Reduction.
Detailed description of the invention
Content expressed by each width attached drawing of this specification and the label in figure are briefly described below:
Fig. 1 is a kind of structural schematic diagram of hip prosthesis of the present invention.
Fig. 2 is hip prosthesis another kind structural schematic diagram of the present invention.
Fig. 3 is a kind of structural schematic diagram of potsherd of the present invention.
Fig. 4 is potsherd another kind structural schematic diagram of the present invention.
In figure: 1. backings, 2. potsherds, 3. bulbs, 4. high molecular polymers.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation.
The hip prosthesis, including bulb and acetabular bone backing, the outer surface of bulb is corresponding with the inside of acetabular bone backing, hip
Mortar backing is the domed backing of metal, and bulb can be metal or ceramic bulb, and the inside of backing or the outer surface of bulb are set
Have for reducing the potsherd to rub between the two, potsherd is one group, one group of potsherd dispersed placement；Specifically, one group of pottery
Tile non-uniform spacing arrangement, non-uniform spacing arrangement can increase contact area, to reduce contact stress.
Wherein, the outer surface of backing, which is equipped with, is suitable for tissue growth, is convenient for biology connection, enhancing clinical for a long time
One group of hole of connection effect, one group of Kong Weiyi group micropore；Micropore can make bone tissue grow to the inside, reinforce joint and human body host
The reliability that prosthese is fixed in human body can be improved in the connection of bone, guarantees using effect.
As shown in Figures 1 to 4, specific as follows below by specific embodiment to the detailed description of the invention:
Embodiment 1: the inside of backing 1 is equipped with the potsherd 2 worn for reducing backing 1 and bulb 3, the bottom of potsherd 2
End and the inside of backing are welded to connect, and potsherd 2 is one group of potsherd of dispersed placement, the outer concave curved surface and bulb 3 of potsherd 2
Appearance face contact to constitute friction secondary.Wherein, backing and bulb can be titanium and its alloy or tantalum and its alloy or medical stainless steel
Or cochrome, potsherd are bioceramic.
It is cylinder and more that the shape of one group of potsherd 2, which can all be the shape of cylinder or polygon prism or one group of potsherd,
Prism combination, one group of potsherd non-uniform spacing arrangement, increases the contact area with bulb surface.Also, one group of potsherd
Outer concave curved surface is in same curved surface, and uniform force is reliable and stable.
By laser welding in 1 inside of backing, the outer concave curved surface of one group of potsherd is in same ball for the bottom end of potsherd 2
Face.The monoblock type that upper dispersed placement has several potsherds to replace thickness big on the inside of i.e. domed backing is ceramic-lined, reduces people
The whole wall thickness of work acetabular bone, improves the diameter of bulb, to increase the motion range of artificial hip joint.
Intermediate is equipped between potsherd, intermediate is high molecular polymer, it is preferred that be ultra-high molecular weight polyethylene.
The outer surface of high molecular polymer is lower than the outer concave curved surface of potsherd, has certain impact resistance and Noise Reduction.
The outer peripheral surface of potsherd and high molecular polymer connected component is equipped with groove or protrusion, it is preferred that on potsherd
Groove be helicla flute.High molecular polymer is embedding in the trench, increases the withdrawal force and binding force of potsherd, and potsherd is fixed
Reliably.Alternatively, the outer peripheral surface of potsherd and high molecular polymer connected component is equipped with the spiral bar of protrusion, can also reach same
Fixed effect.
The surface of bulb is equipped with one group of hole for storing human body fluid, and one group of hole is one group of miniature pit, for storing
Human body fluid lubricates the contact surface of lateral femoral condyle prosthesis and potsherd, reduces the two friction.Also, have between adjacent ceramic piece
Certain gap can be used for storing human body fluid in gap, lubricate the contact surface of potsherd and bulb, both reduce friction.
Embodiment 2: the inside of backing 1 is equipped with one group of potsherd 2 of the surface abrasion for reducing backing 1 and bulb 3, tool
Body is that the inside of backing 1 is equipped with groove, and supporting mass is equipped in groove, and supporting mass is high molecular polymer 4, and one group of potsherd 2 is equal
It is embedded on high molecular polymer 4, the outer concave curved surface of potsherd and the appearance face contact of bulb constitute friction pair.Wherein, backing
It can be bioceramic for titanium and its alloy or tantalum and its alloy or medical stainless steel or cochrome, potsherd with bulb.
Potsherd 2 is fixed on the inside of backing by high molecular polymer, and potsherd fixation is reliable and stable, reduces ceramics
Machining accuracy on the inside of piece and backing reduces processing technology, reduces cost, and have certain impact resistance and Noise Reduction.
It is cylinder and more that the shape of one group of potsherd 2, which can all be the shape of cylinder or polygon prism or one group of potsherd,
Prism combination, one group of potsherd non-uniform spacing arrangement, the outer end face of one group of potsherd are in same spherical surface, increase and bulb table
The contact area in face.Also, the outer concave curved surface of one group of potsherd is in same curved surface, and uniform force is reliable and stable.It is domed
The monoblock type that several potsherds of dispersed placement replace thickness big on the inside of backing is ceramic-lined, reduces the integral wall of manual acetabulum
Thickness, improves the diameter of bulb, to increase the motion range of artificial hip joint.
Supporting mass and ceramics are whole manufacture, then the supporter and ceramics that are connected as one after whole manufacture are assemblied in lining
Inside the groove of back.
The surface of bulb 3 is equipped with one group of hole for storing human body fluid, and one group of hole is one group of miniature pit, for storing
Human body fluid lubricates the contact surface of lateral femoral condyle prosthesis and potsherd, reduces the two friction.Also, the surface of high molecular polymer
Lower than the outer concave curved surface of potsherd, there is certain gap between adjacent ceramic piece, can be used for storing human body fluid in gap, moisten
The contact surface of sliding potsherd and bulb, reduces the two friction, and potsherd and bulb wear small, long service life.
The outer peripheral surface of potsherd 2 and 4 connected component of high molecular polymer is equipped with groove or protrusion, the groove on potsherd
For helicla flute；High molecular polymer is embedding in the trench, increases the withdrawal force and binding force of potsherd, and potsherd is fixed reliable.
Alternatively, the outer peripheral surface of potsherd and high molecular polymer connected component is equipped with the spiral bar of protrusion, it can also reach same solid
Determine effect.
One group of potsherd 2 is fixed on the inside of backing by high molecular polymer, has between the bottom and backing of potsherd
There is cushion, potsherd is avoided to contact firmly with backing, active force of the bulb to potsherd can be buffered, potsherd is non-friable
It splits.
The structure of the hip prosthesis can also be that the surface of bulb is equipped with groove, be equipped with supporting mass, supporting mass in groove
For high molecular polymer, one group of potsherd of high molecular polymer surface inserting, the convex outward of potsherd and the medial surface of backing
It is secondary that contact constitutes friction.The outer peripheral surface of potsherd and high molecular polymer connected component is equipped with helicla flute, high molecular polymer
In helicla flute, the withdrawal force and binding force of potsherd are increased；The outer end face phase of the medial surface of backing and one group of potsherd
Contact.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, if use the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or it is not improved will
Conception and technical scheme of the invention directly apply to other occasions, within the scope of the present invention.
Claims (10)
1. a kind of hip prosthesis, including bulb and domed backing, it is characterised in that: the inside of the backing is equipped with and is used for
Reduce the potsherd of backing and bulb abrasion, the bottom end of the potsherd and the inside of backing are connected using welding manner, described
Potsherd is one group of potsherd of dispersed placement, and it is secondary that the outer concave curved surface of potsherd and the appearance face contact of bulb constitute friction；
Alternatively, further including potsherd and supporting mass, the potsherd is one group of potsherd, and one group of potsherd is distributed across bearing
On body, the inside of the backing is equipped with groove, groove for accommodating supporting mass, the outer concave curved surface of the potsherd and bulb it is outer
It is secondary that surface contact constitutes friction.
2. hip prosthesis as described in claim 1, it is characterised in that: the outer concave curved surface of one group of potsherd is in same song
Face.
3. hip prosthesis as described in claim 1, it is characterised in that: the supporting mass is high molecular polymer, polyphosphazene polymer
The outer surface for closing object is lower than the outer concave curved surface of potsherd.
4. hip prosthesis as described in claim 1, it is characterised in that: the shape of one group of potsherd can for cylinder and/or
Polygon prism.
5. hip prosthesis as described in claim 1, it is characterised in that: the outer surface of the bulb is equipped with for storing body
One group of hole of liquid.
6. hip prosthesis as described in claim 1, it is characterised in that: the outer surface of the backing, which is equipped with, is suitable for human body group
Knit growth, convenient for biology connection, one group of hole of the clinical long-term connection effect of enhancing.
7. hip prosthesis as described in claim 1, it is characterised in that: the bulb and backing can for titanium and its alloy or tantalum and
Its alloy or medical stainless steel or cochrome, potsherd are bioceramic.
8. hip prosthesis as claimed in claim 3, it is characterised in that: the potsherd and high molecular polymer connected component
Outer peripheral surface is equipped with groove or protrusion.
9. hip prosthesis as claimed in claim 4, it is characterised in that: one group of potsherd non-uniform spacing arrangement.
10. hip prosthesis as claimed in claim 8, it is characterised in that: the groove on the potsherd is helicla flute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154440.5A CN109662808A (en) | 2019-03-01 | 2019-03-01 | A kind of hip prosthesis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910154440.5A CN109662808A (en) | 2019-03-01 | 2019-03-01 | A kind of hip prosthesis |
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| CN109662808A true CN109662808A (en) | 2019-04-23 |
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| CN201910154440.5A Pending CN109662808A (en) | 2019-03-01 | 2019-03-01 | A kind of hip prosthesis |
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| CN (1) | CN109662808A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368142A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Femoral head prosthesis, femoral prosthesis component and hip joint component |
| CN110368140A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Femoral implant |
| CN110368140B (en) * | 2019-08-05 | 2024-04-30 | 吉瑞骨科有限公司 | Femoral implant |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5549700A (en) * | 1993-09-07 | 1996-08-27 | Ortho Development Corporation | Segmented prosthetic articulation |
| EP1433443A1 (en) * | 2002-12-27 | 2004-06-30 | Biomet Merck Limited | Hip prosthesis with ceramic bearing |
| US20050273176A1 (en) * | 2001-05-01 | 2005-12-08 | Amedica Corporation | Hip prosthesis with monoblock ceramic acetabular cup |
| CN102488573A (en) * | 2011-11-11 | 2012-06-13 | 上海交通大学 | Artificial acetabulum made of discrete ceramic cylinders |
| CN103222904A (en) * | 2013-04-27 | 2013-07-31 | 上海交通大学 | Distributed acetabular prosthesis |
| WO2016183701A1 (en) * | 2015-05-15 | 2016-11-24 | 江苏奥康尼医疗科技发展有限公司 | Artificial prosthesis made of organic polymeric material for hip hemiarthroplasty |
-
2019
- 2019-03-01 CN CN201910154440.5A patent/CN109662808A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5549700A (en) * | 1993-09-07 | 1996-08-27 | Ortho Development Corporation | Segmented prosthetic articulation |
| US20050273176A1 (en) * | 2001-05-01 | 2005-12-08 | Amedica Corporation | Hip prosthesis with monoblock ceramic acetabular cup |
| EP1433443A1 (en) * | 2002-12-27 | 2004-06-30 | Biomet Merck Limited | Hip prosthesis with ceramic bearing |
| CN102488573A (en) * | 2011-11-11 | 2012-06-13 | 上海交通大学 | Artificial acetabulum made of discrete ceramic cylinders |
| CN103222904A (en) * | 2013-04-27 | 2013-07-31 | 上海交通大学 | Distributed acetabular prosthesis |
| WO2016183701A1 (en) * | 2015-05-15 | 2016-11-24 | 江苏奥康尼医疗科技发展有限公司 | Artificial prosthesis made of organic polymeric material for hip hemiarthroplasty |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368142A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Femoral head prosthesis, femoral prosthesis component and hip joint component |
| CN110368140A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Femoral implant |
| CN110368140B (en) * | 2019-08-05 | 2024-04-30 | 吉瑞骨科有限公司 | Femoral implant |
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