CN116392641A - Artificial hip joint acetabular cup with single composite structure - Google Patents
Artificial hip joint acetabular cup with single composite structure Download PDFInfo
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- CN116392641A CN116392641A CN202310255620.9A CN202310255620A CN116392641A CN 116392641 A CN116392641 A CN 116392641A CN 202310255620 A CN202310255620 A CN 202310255620A CN 116392641 A CN116392641 A CN 116392641A
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- acetabular cup
- carbon fiber
- ether
- ketone
- fiber reinforced
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- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 210000004394 hip joint Anatomy 0.000 title claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 54
- 239000004917 carbon fiber Substances 0.000 claims abstract description 54
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 50
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000002639 bone cement Substances 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 5
- 210000004197 pelvis Anatomy 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 210000001624 hip Anatomy 0.000 claims 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 9
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008468 bone growth Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 28
- 238000003892 spreading Methods 0.000 description 6
- 230000007480 spreading Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 208000037099 Prosthesis Failure Diseases 0.000 description 1
- 210000000588 acetabulum Anatomy 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002138 osteoinductive effect Effects 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
-
- 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
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
-
- 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
- A61F2002/345—Acetabular cups the inner and outer (hemi)spherical surfaces of a shell, e.g. an intermediate shell, having distinct centres of rotation, both located on the centre line of the shell
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Dermatology (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses a single-body type composite structure artificial acetabular cup, and belongs to the technical field of artificial prostheses. The acetabular cup comprises an acetabular cup body, wherein the acetabular cup body is of a single-body hemispherical composite structure and mainly comprises an acetabular cup outer shell layer and an acetabular cup inner substrate, and the acetabular cup inner substrate is made of a chopped carbon fiber reinforced polyether-ether-ketone composite material; the outer shell layer of the mortar cup is a compact structure formed by spirally winding continuous carbon fiber reinforced polyether-ether-ketone wires on the convex surface of the inner substrate of the mortar cup and layering the wires layer by layer in the thickness direction. The invention has higher mechanical strength and fatigue resistance, can meet the load-bearing requirement of human body, can bear the long-term walking load impact of human body, has the elastic modulus similar to the bone of human body, and is beneficial to the bone growth around the prosthesis.
Description
Technical Field
The invention relates to the technical field of artificial prostheses, in particular to an artificial acetabular cup with a single-body composite structure.
Background
The traditional hip joint prosthesis consists of a cup shell, a lining, a femoral head and a femoral stem, wherein the cup shell is usually made of a metal material, the metal cup has high mechanical strength and bearing capacity and is suitable for biological fixation to be widely applied, but has high elastic modulus and easily causes stress shielding effect, so that the surrounding bone tissue cannot be stimulated by enough mechanics to generate symptoms such as osteoporosis, bone absorption and the like. In the prior art, the high molecular weight polyethylene or polyether-ether-ketone and the like are also used for preparing the cup shell, and the high molecular material has low elastic modulus, avoids the stress shielding effect, but has the defects of low mechanical strength and poor fatigue resistance. Recently, patent is also proposed that the cup shell is prepared by using a chopped carbon fiber reinforced polyether-ether-ketone material, and the chopped carbon fiber reinforced polyether-ether-ketone has a remarkable improvement on wear resistance, but has a limited mechanical strengthening effect due to the short length of the carbon fiber and no continuity.
Wear in the acetabular cup prosthesis mainly comes from contact friction between the liner and the femoral head, generated abrasive dust can cause adverse biological reactions such as bone absorption, bone dissolution and the like, so that the prosthesis is aseptic loosened, high molecular weight polyethylene or polyether-ether-ketone materials are mainly used as the liner in the prior art, and the wear resistance of the materials is excellent in the materials commonly used at present, but people hope to obtain materials with more excellent wear resistance so as to further reduce the wear between the liner and the femoral head. In addition, fretting wear is inevitably generated between the inner liner and the cup shell, mechanical fixation or bone cement fixation is generally carried out between the cup shell and the inner liner through a clamping groove lock catch, taper and the like, the hip joint is the largest bearing joint of a human body, the cup is required to bear the weight of the human body and the long-term continuous impact of walking load, therefore, fretting wear is generated between the inner liner and the cup shell under the condition of insufficient tight fit, and even under the condition of stable fixation, the loosening risk after long-term implantation is still generated, so that the stability of the prosthesis is influenced.
Disclosure of Invention
Aiming at the problems in the background technology, the invention provides an artificial acetabular cup with a single-body composite structure. The artificial bone has higher mechanical strength and fatigue resistance, can meet the load-bearing requirement of a human body, can bear long-term walking load impact of the human body, has the elastic modulus similar to that of bones of the human body, and is beneficial to bone growth around the prosthesis.
The technical scheme of the invention is realized as follows:
an artificial hip joint acetabular cup with a single-body composite structure comprises an acetabular cup main body, wherein the acetabular cup main body is of a single-body hemispherical composite structure and mainly comprises an acetabular cup outer shell layer and an acetabular cup inner layer substrate, and the acetabular cup inner layer substrate is made of a chopped carbon fiber reinforced polyether-ether-ketone composite material; the outer shell layer of the mortar cup is a compact structure formed by spirally winding continuous carbon fiber reinforced polyether-ether-ketone wires on the convex surface of the inner substrate of the mortar cup and layering the wires layer by layer in the thickness direction.
Further, the continuous carbon fiber reinforced polyether-ether-ketone wires at the outermost side of the shell layer of the cup form a plurality of grooves along the weft direction in a spiral winding mode with intervals, and the grooves are used for realizing bone cement type fixation or biological fixation of the cup prosthesis and pelvis.
Further, the content of the carbon fiber in the chopped carbon fiber reinforced polyether-ether-ketone composite material is 10-30%.
Further, the carbon fiber content of the continuous carbon fiber reinforced polyether-ether-ketone composite material is 30-60%.
Further, the continuous carbon fiber reinforced polyetheretherketone wire comprises polyetheretherketone resin and a plurality of continuous carbon fiber monofilaments; the polyether-ether-ketone resin is wrapped on the outer side of the continuous carbon fiber monofilament.
Further, the inner-layer substrate of the mortar cup is manufactured by adopting an injection molding process, and the outer shell of the mortar cup is manufactured by spirally winding continuous carbon fiber reinforced polyether-ether-ketone wires on the inner-layer substrate layer by layer along the weft direction by adopting a 3D printing technology or an automatic laying forming technology; the polyether-ether-ketone in the high Wen Shisi material is fully melted and bonded into a whole in the preparation process.
Compared with the prior art, the invention has the advantages that:
1. the artificial joint cup adopts the design of an integrated composite structure of a short carbon fiber reinforced polyether-ether-ketone inner substrate and a continuous carbon fiber reinforced polyether-ether-ketone outer shell layer, and compared with high polymer materials such as polyether-ether-ketone and high molecular weight polyethylene, the short carbon fiber reinforced polyether-ether-ketone composite material has more excellent self-lubricity and wear resistance, contacts with a femoral bulb of metal or other materials, and has lower wear rate; the continuous carbon fiber reinforced polyether-ether-ketone composite material has higher mechanical strength and fatigue resistance, can meet the load-bearing requirement of a human body and can bear long-term walking load impact of the human body, and meanwhile, the continuous carbon fiber reinforced polyether-ether-ketone composite material is designed to have an elastic modulus close to that of bones of the human body, so that the stress shielding effect is avoided, and the growth of surrounding bones is facilitated.
2. The mortar cup inner lining and the outer shell layer continuous carbon fiber reinforced polyether-ether-ketone wires can be tightly adhered into an integrated structure after being melted by polyether-ether-ketone, mechanical locking or bone cement fixation is not needed, and meanwhile the risks of fretting wear and prosthesis loosening are avoided.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the external surface of the present invention.
In the figure: 1. and 2, a cup inner substrate and a cup outer shell layer.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
An artificial hip joint acetabular cup with a single-body composite structure. The acetabulum cup is of a single hemispherical composite structure and comprises an outer shell layer and an inner substrate of the acetabular cup, the inner substrate is made of a chopped carbon fiber reinforced polyether-ether-ketone composite material, the outer shell layer is made of a continuous carbon fiber reinforced polyether-ether-ketone composite material, and the inner layer and the outer shell layer are combined into a whole after being melted by polyether-ether-ketone. The continuous carbon fiber reinforced polyether-ether-ketone wire is spirally and tightly wound on the convex surface of the inner substrate, is paved layer by layer in the thickness direction, is discontinuously arranged on the outer surface layer of the cup, forms a plurality of grooves along the weft direction, and can realize bone cement type fixation or biological type fixation of the cup prosthesis and pelvis.
Further, the content of carbon fiber in the chopped carbon fiber reinforced polyether-ether-ketone composite material is 10-30%.
Further, the content of carbon fiber in the continuous carbon fiber reinforced polyether-ether-ketone composite material is 30% -60%.
Further, the continuous carbon fiber reinforced polyether-ether-ketone composite material wire consists of a plurality of continuous carbon fiber monofilaments and polyether-ether-ketone resin coated outside the monofilaments.
Further, the acetabular cup prosthesis adopts a bone cement type fixing mode, the depth of the groove is 1-3 mm, the width is 2-6 mm, and the interval is 4-10 mm.
Further, the acetabular cup prosthesis adopts a biological fixing mode, the depth of the groove is 0.5-1 mm, the width is 1-2 mm, and the interval is 2-4 mm.
Further, the acetabular cup prosthesis may be bio-fixation and the outer surface may be coated with one or more osteointegration promoting or osteoinductive biomaterials.
Further, the method is equally suitable for making artificial shoulder cup prostheses.
The examples are further illustrated below by the manufacturing process and structural products:
example 1:
preparing a hemispherical inner layer substrate of the acetabular cup by adopting a chopped carbon fiber reinforced polyether-ether-ketone composite material with the carbon fiber content of 10%, then tightly winding and uniformly spreading a continuous carbon fiber reinforced polyether-ether-ketone wire with the carbon fiber content of 30% on the convex surface of the inner layer substrate in a spiral manner, repeating the operation, and spreading the continuous carbon fiber reinforced polyether-ether-ketone wire layer by layer in the thickness direction, wherein when the distance from the target spreading thickness is 3mm, the continuous carbon fiber reinforced polyether-ether-ketone wire is discontinuously distributed on the outer surface layer of the acetabular cup, so that a plurality of grooves with the depth of 3mm along the weft direction are formed, the width of each groove is 6mm, and the distance is 10mm. The cup prosthesis can be secured to the pelvis by applying bone cement to the outer surface.
Example 2:
preparing a hemispherical inner layer substrate of the acetabular cup by adopting a chopped carbon fiber reinforced polyether-ether-ketone composite material with the carbon fiber content of 30%, then tightly winding and uniformly spreading a continuous carbon fiber reinforced polyether-ether-ketone wire with the carbon fiber content of 60% on the convex surface of the inner layer substrate in a spiral manner, repeating the operation, and spreading the continuous carbon fiber reinforced polyether-ether-ketone wire layer by layer in the thickness direction, wherein when the distance from the target spreading thickness is 0.5mm, the continuous carbon fiber reinforced polyether-ether-ketone wire is discontinuously distributed on the outer surface layer of the acetabular cup, so that a plurality of grooves with the depth of 0.5mm along the weft direction are formed, the width of each groove is 1mm, and the distance between the grooves is 2mm. The cup prosthesis can be biologically fixed with pelvis by coating hydroxyapatite on the outer surface.
The above is merely an embodiment of the present invention, but the present invention is not limited to the embodiment. Various equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit and principles of the present invention, and these are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (6)
1. An artificial hip joint acetabular cup with a single-body composite structure comprises an acetabular cup main body, and is characterized in that the acetabular cup main body is of a single-body hemispherical composite structure and mainly comprises an acetabular cup outer shell layer and an acetabular cup inner substrate, wherein the acetabular cup inner substrate is made of a chopped carbon fiber reinforced polyether-ether-ketone composite material; the outer shell layer of the mortar cup is a compact structure formed by spirally winding continuous carbon fiber reinforced polyether-ether-ketone wires on the convex surface of the inner substrate of the mortar cup and layering the wires layer by layer in the thickness direction.
2. The artificial hip acetabular cup of a single-body composite structure according to claim 1, wherein the continuous carbon fiber reinforced polyetheretherketone wires on the outermost side of the outer shell of the acetabular cup form a plurality of grooves along the weft direction in a spiral winding manner with intervals for realizing bone cement type fixation or biological type fixation of the acetabular cup prosthesis and pelvis.
3. The artificial hip acetabular cup of claim 1, wherein the carbon fiber in the chopped carbon fiber reinforced polyether-ether-ketone composite is 10-30%.
4. The artificial hip acetabular cup of claim 1, wherein the carbon fiber content of the continuous carbon fiber reinforced polyetheretherketone composite is 30-60%.
5. The artificial hip acetabular cup of claim 1 wherein the continuous carbon fiber reinforced polyetheretherketone filaments comprise polyetheretherketone resin and a plurality of continuous carbon fiber filaments; the polyether-ether-ketone resin is wrapped on the outer side of the continuous carbon fiber monofilament.
6. The artificial hip joint acetabular cup of a single-body composite structure according to claim 1, wherein the inner liner of the acetabular cup is manufactured by adopting an injection molding process, and the outer shell of the acetabular cup is manufactured by spirally winding continuous carbon fiber reinforced polyether-ether-ketone wires on the inner liner layer by layer along the weft direction by adopting a 3D printing technology or an automatic laying forming technology; the polyether-ether-ketone in the high Wen Shisi material is fully melted and bonded into a whole in the preparation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310255620.9A CN116392641A (en) | 2023-03-16 | 2023-03-16 | Artificial hip joint acetabular cup with single composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310255620.9A CN116392641A (en) | 2023-03-16 | 2023-03-16 | Artificial hip joint acetabular cup with single composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116392641A true CN116392641A (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310255620.9A Pending CN116392641A (en) | 2023-03-16 | 2023-03-16 | Artificial hip joint acetabular cup with single composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116392641A (en) |
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2023
- 2023-03-16 CN CN202310255620.9A patent/CN116392641A/en active Pending
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