CN110368143A - Humeral head replacement - Google Patents
Humeral head replacement Download PDFInfo
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- CN110368143A CN110368143A CN201910718280.2A CN201910718280A CN110368143A CN 110368143 A CN110368143 A CN 110368143A CN 201910718280 A CN201910718280 A CN 201910718280A CN 110368143 A CN110368143 A CN 110368143A
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- porous structure
- polymer material
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- humeral head
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- 210000004095 humeral head Anatomy 0.000 title claims abstract description 37
- 239000002861 polymer material Substances 0.000 claims abstract description 65
- 210000002758 humerus Anatomy 0.000 claims abstract description 30
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 239000011324 bead Substances 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 17
- 230000014759 maintenance of location Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 210000000988 bone and bone Anatomy 0.000 claims description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 4
- 239000004626 polylactic acid Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 2
- 210000000845 cartilage Anatomy 0.000 abstract description 4
- 230000035479 physiological effects, processes and functions Effects 0.000 abstract description 4
- 210000000323 shoulder joint Anatomy 0.000 description 17
- 241001653121 Glenoides Species 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 210000000281 joint capsule Anatomy 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 201000008482 osteoarthritis Diseases 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 208000006820 Arthralgia Diseases 0.000 description 1
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 208000036487 Arthropathies Diseases 0.000 description 1
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010011732 Cyst Diseases 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 208000012659 Joint disease Diseases 0.000 description 1
- 241000594558 Labium Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010031264 Osteonecrosis Diseases 0.000 description 1
- 208000024288 Rotator Cuff injury Diseases 0.000 description 1
- 206010039227 Rotator cuff syndrome Diseases 0.000 description 1
- 206010048873 Traumatic arthritis Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000001258 synovial membrane Anatomy 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 210000001364 upper extremity Anatomy 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral 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
- A61F2/3094—Designing or manufacturing processes
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
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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
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
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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
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
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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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
- A61F2002/4018—Heads or epiphyseal parts of humerus
- A61F2002/4022—Heads or epiphyseal parts of humerus having a concave shape, e.g. hemispherical cups
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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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
- A61F2002/4037—Connections of heads to necks
-
- 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
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
- A61F2002/4044—Connections of necks to shafts
Abstract
The present invention provides a kind of humeral head replacements, comprising: porous structure layer, porous structure layer have multiple holes, and for porous structure layer for connecting with humerus main body, porous structure layer has the first position limiting structure；Polymer material layer, it is arranged on porous structure layer, polymer material layer has the second position limiting structure, the first position limiting structure and the limit cooperation of the second position limiting structure, the side away from porous structure layer of polymer material layer is articular surface, and articular surface is the cambered surface towards the outer projection of polymer material layer.Since polymer material layer has approximate consistency and elasticity with the physiology cartilage of human body natural, it is attained by requirement in terms of wear-resisting property and mechanical property, with good biology performance, therefore can be big to avoid easy to wear or brittleness existing for existing humeral head replacement the problems such as, the performance for improving existing humeral head replacement meets the use demand of patient.
Description
Technical field
The present invention relates to the field of medical instrument technology, in particular to a kind of humeral head replacement.
Background technique
Shoulder joint is made of the shoulder broad-mouthed receptacle for holding liquid (i.e. glenoid cavity) of humerus head and shoulder blade, be connected two facies articularis ossium sizes difference compared with
Greatly, specifically, the glenoid of shoulder broad-mouthed receptacle for holding liquid is only capable of accommodating the 1/4~1/3 of the ball and socket joint of humerus head.Glenoid periphery has labium articulare intensification
Glenoid cavity.Joint capsule is weak and relaxes, and is attached between glenoid cavity periphery and anatomical neck of humerus, and there are also by synovial membrane in the cyst wall of joint
The brachial biceps of package, this tendon have the function of reinforcing shoulder joint.
Shoulder joint is the most flexible cup-and-ball joint of whole body, can be bent, and stretches, receives, opening up, rotating and circumduction.It is subject to joint
Head is big with the area margin of glenoid, and joint capsule is thin and the structure features such as relaxation, reflects its motion function with flexibility.
There are a large amount of muscle to pass through around shoulder joint.These muscle are significant to the stability of maintenance shoulder joint, but joint is front lower
Quadratus meat is less, and joint capsule is again most loose, so shoulder joint stability is poor.When upper limb is in outreach, external rotatory position falls back
When and palm or ancon when landing, the anterior dislocation of Yi Fasheng shoulder joint.
Shoulder joint displacement art is suitable for Osteoarthritis illness.Osteoarthritis includes primary and secondary, rheumatoid pass
Section inflammation, traumatic arthritis, rotator cuff injury arthropathy and artificial shoulder joint are overhauled, osteonecrosis, tumour, shoulder joint development
Bad, oldness infection etc..
Artificial shoulder joint (i.e. shoulder joint prosthesis) displacement technique refers to using materials such as metal, ceramics, according to human body shoulder joint
Form, construction and function artificial joint prosthesis is made, be implanted into human body by surgical technic, instead of diseased joints function, with
Achieve the purpose that alleviate arthralgia, restore shoulder joint function.
With advances in technology, the material that the humeral head replacement in artificial shoulder joint uses has certain change and progress,
Wherein, metal material has metal ion precipitation, and accumulation will lead to chronic disease to a certain concentration in human body, while wear broken
Bits can induce the bone tissue of Periprosthetic to generate bone dissolution.Ceramic material abrasion is small, while having inertia and good biofacies
Capacitive, therefore the artificial shoulder joint of ceramic material becomes the first choice of current clinical use.But inherently due to ceramic material
Brittleness, it is easy to break if thickness is thin, and cause the problem of surgical procedure hardly possible.
Therefore, humeral head replacement in the prior art still cannot satisfy the use demand.
Summary of the invention
The present invention provides a kind of humeral head replacements, to improve the performance of humeral head replacement in the prior art.
To achieve the goals above, the present invention provides a kind of humeral head replacements, comprising: porous structure layer, porous structure
Layer has multiple holes, and for porous structure layer for connecting with humerus main body, porous structure layer has the first position limiting structure；Polymer
Material layer is arranged on porous structure layer, and polymer material layer has the second position limiting structure, the first position limiting structure and the second limit
Structure limit cooperation, the side away from porous structure layer of polymer material layer are articular surface, and articular surface is towards polymeric material
The cambered surface of the outer projection of the bed of material.
Further, polymer material layer is arranged on porous structure layer by Shooting Technique, and the one of polymer material layer
Some materials are penetrated into multiple holes of porous structure layer.
Further, polymer material layer is made of polyurethane, polyvinyl alcohol gel or polylactic acid.
Further, porous structure layer has limiting groove, and limiting groove forms the first position limiting structure, polymer material layer
It include: arcwall, the arcuate surface of arcwall forms articular surface, and at least part and the porous structure layer of the inner concave of arcwall connect
It connects；Retention bead is arranged on the inner concave of arcwall, and retention bead forms the second position limiting structure, and retention bead and limit are recessed
Slot is cooperatively connected.
Further, limiting groove is circular groove structure, and retention bead is annular protrusion structure.
Further, arcwall is bowl structure, and retention bead is arranged at the rim of a bowl of arcwall.
Further, porous structure layer has first end face, and first end face is used to cooperate with humerus main body, polymer material
Layer has second end face, and second end face is used to cooperate with humerus main body, and first end face and second end face interval are arranged.
Further, the part between first end face and second end face of porous structure layer is insertion section, insertion section
For being inserted into humerus main body, the perimeter dimensions of second end face are greater than the size of the outer profile of insertion section.
Further, on the direction from second end face to first end face, the size of the outer profile of insertion section is gradually increased.
Further, porous structure layer has installation cavity, and the inner wall of installation cavity is used to be cooperatively connected with humerus main body, from peace
On the bottom wall behaveing affectedly to the direction of the opening of installation cavity, the size of the Internal periphery of installation cavity is gradually increased.
Further, microcellular structure is distributed in the articular surface of polymer material layer.
It applies the technical scheme of the present invention, porous structure layer and polymer material layer, polymerization is set in humeral head replacement
The articular surface of object material layer is used for and shoulder broad-mouthed receptacle for holding liquid articular surface frictional fit.It, can be with since porous structure layer has multiple holes
It is stably connected with polymer material layer, and can realize good bio-compatible with tissue.Due to polymer material layer
There is approximate consistency and elasticity with the physiology cartilage of human body natural, be attained by and want in terms of wear-resisting property and mechanical property
It asks, there is good biology performance, therefore can be big etc. to avoid easy to wear or brittleness existing for existing humeral head replacement
Problem improves the performance of existing humeral head replacement, meets the use demand of patient.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the humeral head replacement of the embodiment of the present invention offer；
Fig. 2 shows the connection schematic diagrams of humeral head replacement and humerus main body in Fig. 1；
Fig. 3 shows the structural schematic diagram of the polymer material layer in Fig. 1.
Wherein, the above drawings include the following reference numerals:
10, porous structure layer；11, first end face；12, insertion section；13, installation cavity；20, polymer material layer；21, arc
Wall；22, retention bead；23, second end face；24, microcellular structure；30, humerus main body.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1 to Figure 3, the embodiment provides a kind of humeral head replacements, comprising: porous structure layer 10,
Porous structure layer 10 has multiple holes, and porous structure layer 10 with humerus main body 30 for connect, and porous structure layer 10 is with the
One position limiting structure；Polymer material layer 20 is arranged on porous structure layer 10, and polymer material layer 20 has the second limit knot
Structure, the first position limiting structure and the limit cooperation of the second position limiting structure, the side away from porous structure layer 10 of polymer material layer 20
For articular surface, articular surface is the cambered surface towards the outer projection of polymer material layer 20.
Using the technical solution of the present embodiment, porous structure layer 10 and polymer material layer are set in humeral head replacement
20, the articular surface of polymer material layer 20 is used for and shoulder broad-mouthed receptacle for holding liquid articular surface frictional fit.Since porous structure layer 10 has multiple holes
Gap, therefore can be stably connected with polymer material layer 20, and can realize good bio-compatible with tissue.Due to
Polymer material layer 20 has approximate consistency and elasticity with the physiology cartilage of human body natural, in wear-resisting property and mechanical property
Aspect is attained by requirement, has good biology performance, therefore can easily grind to avoid existing for existing humeral head replacement
The problems such as damage or brittleness are big, improves the performance of existing humeral head replacement, meets the use demand of patient.
In the present embodiment, polymer material layer 20 is arranged on porous structure layer 10 by Shooting Technique, polymeric material
A part of material of the bed of material 20 penetrates into multiple holes of porous structure layer 10.Polymer material layer 20 and porous structure layer in this way
10 can reliably be combined together, and improve the intensity of humeral head replacement.In the present embodiment, porous structure layer 10 is metal material
Material, porous structure layer 10 can be made of 3D printing or chemical vapor infiltration mode.The ruler of hole in porous structure layer 10
Very little is 0.3mm to 1.2mm, and porosity is 50% or more.Weight can be mitigated in this way and improve structural strength, and improve life
Object amalgamation.The generally porous structure of porous structure layer 10, inside are covered with the hole of 3D connection, and bone can pass through porous structure
Realize the connection between polymer material layer 20.
As shown in figure 3, in the present embodiment, microcellular structure 24, micropore are distributed on the articular surface of polymer material layer 20
Structure 24 can be by connection between bone and articular surface, during such joint motions, and microcellular structure 24 can be used as storage and close
The mechanism of liquid is saved, so as to improve the antiwear property of polymer material layer 20.Specifically, microcellular structure includes multiple intervals
The two sides of polymer material layer 20 are connected to by the through-hole of setting, through-hole.The diameter of through-hole is 1mm to 2mm.
In the present embodiment, polymer material layer 20 with a thickness of 2mm to 6mm, which can both guarantee joint
The function in face, while can guarantee the quality of polymer material layer 20.
In the present embodiment, polymer material layer 20 is made of polyurethane, polyvinyl alcohol gel or polylactic acid.The above material
Stability is good, and deformability and intensity meet long-time service demand.Further, poly- ammonia can be used in polymer material layer 20
Ester TPU material.These materials have good ductility, breaking strength, wearability, biocompatibility, therefore can with it is porous
Structure sheaf 10 reaches good combination, it is ensured that the overall performance that prosthese is chronically implanted.
In the present embodiment, porous structure layer 10 has limiting groove, and limiting groove forms the first position limiting structure, polymer
Material layer 20 includes: arcwall 21, and the arcuate surface of arcwall 21 forms articular surface, at least part of the inner concave of arcwall 21
It is connect with porous structure layer 10；Retention bead 22 is arranged on the inner concave of arcwall 21, and retention bead 22 forms the second limit
Structure, retention bead 22 and limiting groove are cooperatively connected.By the cooperation of retention bead 22 and limiting groove, can further mention
The bonding strength of high polymer material layer 20 and porous structure layer 10 prevents polymer material layer 20 to be detached from.Specifically, limit convex
The section for playing 22 can be set to pyramidal structure shown in Fig. 3.The angle of pyramidal structure is A, and A is less than 60 °.
Specifically, limiting groove is circular groove structure, and retention bead 22 is annular protrusion structure.It in this way can be in porous knot
The circumferencial direction of structure layer 10 and the circumferencial direction of polymer material layer 20 reinforce polymer material layer 20 and porous structure layer 10
Connection.
Further, arcwall 21 is bowl structure, and retention bead 22 is arranged at the rim of a bowl of arcwall 21.By above-mentioned
Setting, can with the edge of fixed polymer material layer 20, with prevent under ambient stress polymer material layer 20 occur flange or
It is separated with porous structure layer 10.
As shown in Figure 1, porous structure layer 10 has first end face 11, first end face 11 is used to cooperate with humerus main body 30,
Polymer material layer 20 has second end face 23, and second end face 23 is used to cooperate with humerus main body 30, first end face 11 and second
The setting of the interval of end face 23.Porous structure layer 10 and polymer material layer 20 and humerus main body 30 can be improved by above-mentioned setting
Bonding strength.
Further, the part between first end face 11 and second end face 23 of porous structure layer 10 is insertion section
12, for being inserted into humerus main body 30, the perimeter dimensions of second end face 23 are greater than the ruler of the outer profile of insertion section 12 for insertion section 12
It is very little.Insertion section 12 is inserted into humerus main body 30, the bonding strength of humeral head replacement Yu humerus main body 30 can be improved.Moreover,
The perimeter dimensions of second end face 23 are set greater than to the size of the outer profile of insertion section 12, the work of limit cooperation can be played
With.
As shown in Figure 1, the size of the outer profile of insertion section 12 is gradually on from second end face 23 to the direction of first end face 11
Increase.By above-mentioned setting, after insertion section 12 is inserted into humerus main body 30, can be reliably connected with humerus main body 30, avoid from
Deviate from humerus main body 30.The outer surface of insertion section 12 can be set to the conical surface, and the length of insertion section 12 is 5mm to 10mm.
In the present embodiment, porous structure layer 10 has installation cavity 13, and the inner wall of installation cavity 13 is used for and humerus main body 30
It is cooperatively connected, on the direction of the opening from the bottom wall of installation cavity 13 to installation cavity 13, the size of the Internal periphery of installation cavity 13 is gradually
Increase.By above-mentioned setting, being reliably connected for porous structure layer 10 and humerus main body 30 may be implemented, and convenient for operation behaviour
Make.Further, the bottom wall of installation cavity is arcuate structure, and the side wall of installation cavity is pyramidal structure, the mother of the conical surface of pyramidal structure
Angle between line and axis be 1.5 ° to 7.5 ° in the present embodiment, porous structure layer 10 be rotary structure, porous structure
The outer diameter of the first end face 11 of layer 10 is 40mm to 64mm.
Using the technical solution of the present embodiment, porous structure layer 10 and polymer material layer are set in humeral head replacement
20, the articular surface of polymer material layer 20 is used for and shoulder broad-mouthed receptacle for holding liquid articular surface frictional fit.Since porous structure layer 10 has multiple holes
Gap, therefore can be stably connected with polymer material layer 20, and can realize good bio-compatible with tissue.Due to
Polymer material layer 20 has approximate consistency and elasticity with the physiology cartilage of human body natural, in wear-resisting property and mechanical property
Aspect is attained by requirement, has good biology performance, therefore can easily grind to avoid existing for existing humeral head replacement
The problems such as damage or brittleness are big, improves the performance of existing humeral head replacement, meets the use demand of patient.
When operation implantation, the end of humerus main body is prefabricated into shape shown in Fig. 2 with molding rotary file；After prefabricated, head
For the conical surface, it is formed simultaneously 5 to 10mm heavy ring.Prosthese is placed in humerus main body tapering, is squeezed into.5 to 10mm heavy ring can be with
Prevent prosthese from being led to prosthetic loosening by the effect of edge force, being fixedly secured for prosthese and bone may be implemented in cone connection.Cone
Connecting portion and 5 to 10mm insertion section 12 are all made of 3D porous structure, are beneficial to prosthese and bone realizes Integrated implant.
The technical solution has the advantage that humeral head replacement is surface replacement, breaks on not half to human body bone
Bad and interference, has good anti-abjection ability and Integrated implant ability.Shoulder joint is that articular surface is small, but the pass that motion amplitude is very big
Section, itself joint lubrication ability is strong, so polymer material (such as polyurethane, polyvinyl alcohol gel, polylactic acid) is used as joint
Rubbing surface can play excellent effect to avoid dry friction.Polymer material layer 20 makes full use of the good biology of polymer
Performance and the excellent wearability under knuckle synovia.Polymer material layer 20 by way of injection molding with porous structure layer 10
Connection.Porous structure layer 10 has the hole of 3D connection, has good grasping force to polymer material layer 20.Porous structure layer 10
It is provided with the area outer upside Fan Gou and the area inner underside Fan Gou (limiting groove), it is intended to which the edge of fixed polymer material layer 20 prevents
In ambient stress lower flange, separation.3D porous structure is used with the region of humerus body contact, is beneficial to prosthese and bone is realized
Integrated implant.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of humeral head replacement characterized by comprising
Porous structure layer (10), the porous structure layer (10) have multiple holes, and the porous structure layer (10) is used for and the upper arm
The connection of bone main body, the porous structure layer (10) have the first position limiting structure；
Polymer material layer (20) is arranged on the porous structure layer (10), and the polymer material layer (20) has second
Position limiting structure, first position limiting structure and second position limiting structure limit cooperation, the back of the polymer material layer (20)
Side from the porous structure layer (10) is articular surface, and the articular surface is the outside towards the polymer material layer (20)
The cambered surface of protrusion.
2. humeral head replacement according to claim 1, which is characterized in that the polymer material layer (20) passes through injection molding work
Skill is arranged on the porous structure layer (10), and a part of material of the polymer material layer (20) penetrates into the porous structure
In multiple holes of layer (10).
3. humeral head replacement according to claim 1, which is characterized in that the polymer material layer (20) by polyurethane,
Polyvinyl alcohol gel or polylactic acid are made.
4. humeral head replacement according to claim 1, which is characterized in that the porous structure layer (10) has limit recessed
Slot, the limiting groove form first position limiting structure, and the polymer material layer (20) includes:
Arcwall (21), the arcuate surface of the arcwall (21) form the articular surface, the inner concave of the arcwall (21)
At least part is connect with the porous structure layer (10)；
Retention bead (22) is arranged on the inner concave of the arcwall (21), and the retention bead (22) forms described second
Position limiting structure, the retention bead (22) and the limiting groove are cooperatively connected.
5. humeral head replacement according to claim 4, which is characterized in that the limiting groove is circular groove structure, institute
Stating retention bead (22) is annular protrusion structure.
6. humeral head replacement according to claim 4, which is characterized in that the arcwall (21) is bowl structure, described
Retention bead (22) is arranged at the rim of a bowl of the arcwall (21).
7. humeral head replacement according to claim 1, which is characterized in that the porous structure layer (10) has first end face
(11), the first end face (11) is used to cooperate with the humerus main body, and the polymer material layer (20) has second end face
(23), the second end face (23) is used to cooperate with the humerus main body, the first end face (11) and the second end face
(23) interval setting.
8. humeral head replacement according to claim 7, which is characterized in that the porous structure layer (10) is located at described the
Part between one end face (11) and the second end face (23) is insertion section (12), and the insertion section (12) is described for being inserted into
In humerus main body, the perimeter dimensions of the second end face (23) are greater than the size of the outer profile of the insertion section (12).
9. humeral head replacement according to claim 8, which is characterized in that from the second end face (23) to the first end
On the direction in face (11), the size of the outer profile of the insertion section (12) is gradually increased.
10. humeral head replacement according to claim 1, which is characterized in that the porous structure layer (10) has installation cavity
(13), the inner wall of the installation cavity (13) is used to be cooperatively connected with the humerus main body, from the bottom wall of the installation cavity (13) to
On the direction of the opening of the installation cavity (13), the size of the Internal periphery of the installation cavity (13) is gradually increased.
11. humeral head replacement according to any one of claim 1 to 10, which is characterized in that the polymer material layer
(20) microcellular structure (24) are distributed in articular surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718280.2A CN110368143A (en) | 2019-08-05 | 2019-08-05 | Humeral head replacement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718280.2A CN110368143A (en) | 2019-08-05 | 2019-08-05 | Humeral head replacement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112237498A (en) * | 2019-12-30 | 2021-01-19 | 雅博尼西医疗科技(苏州)有限公司 | Porous surface structure and substrate connecting structure, preparation method thereof and prosthesis |
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