CN112773575A - Individualized reverse-folding embedded artificial acetabulum and manufacturing method - Google Patents
Individualized reverse-folding embedded artificial acetabulum and manufacturing method Download PDFInfo
- Publication number
- CN112773575A CN112773575A CN202110090059.4A CN202110090059A CN112773575A CN 112773575 A CN112773575 A CN 112773575A CN 202110090059 A CN202110090059 A CN 202110090059A CN 112773575 A CN112773575 A CN 112773575A
- Authority
- CN
- China
- Prior art keywords
- embedding
- acetabulum
- pelvis
- individualized
- manufacturing
- 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
- 210000000588 acetabulum Anatomy 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 24
- 210000004197 pelvis Anatomy 0.000 claims abstract description 24
- 210000004394 hip joint Anatomy 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 208000034656 Contusions Diseases 0.000 claims abstract description 7
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 6
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 6
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims abstract description 6
- 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 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000002591 computed tomography Methods 0.000 claims description 6
- 230000009519 contusion Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 210000001981 hip bone Anatomy 0.000 claims description 3
- 210000003689 pubic bone Anatomy 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 208000008765 Sciatica Diseases 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 206010010356 Congenital anomaly Diseases 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 206010058314 Dysplasia Diseases 0.000 description 1
- 206010017577 Gait disturbance Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 208000012285 hip pain Diseases 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 210000002239 ischium bone Anatomy 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
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
- 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
- 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
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
-
- 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
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
-
- 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
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Prostheses (AREA)
Abstract
The individualized reverse-folding embedded artificial acetabulum comprises a acetabulum cup body and a ceramic lining, wherein a plurality of embedded bodies which are circumferentially arranged and protrude forwards and are reversely and reversely folded are arranged at the edge of the acetabulum cup body, the inner surface of each embedded body is matched with a bone contact surface, the inner surface of each embedded body is a rough surface, the outer surface of each embedded body is a smooth surface, and at least two embedded bodies are respectively provided with a screw hole. The preparation method comprises the following steps: establishing a pelvis 3d digital model; manufacturing a pelvis resin model; bruising the acetabulum on the pelvic resin model; manufacturing a mortar cup model; manufacturing a titanium alloy mortar cup body; processing a screw hole on the embedding body; and spraying a hydroxyapatite rough surface on the surface of the embedding body. A ceramic liner was made and installed in the mortar cup. The inner liner is in close contact with the acetabulum contact surface of the hip joint, is convenient to grow into a whole with the pelvis, adopts an external fixing mode, avoids the phenomenon that the inner liner cracks due to the friction between the protruding screw and the inner liner caused by the internal fixing mode of the acetabulum cup body, and prolongs the service life.
Description
Technical Field
The invention relates to a medical instrument, in particular to an individualized reverse-folding embedded artificial acetabulum and a manufacturing method thereof.
Background
Congenital dislocation of the hip joint is caused by congenital dysplasia of acetabulum, causes hip joint pain, shortening of diseased limbs, walking limping and hip pain after adult, and needs to be replaced by artificial acetabulum.
In the course of artificial acetabulum replacement surgery, shaping treatment needs to be carried out on the undeveloped acetabulum. At present, two methods are generally adopted, wherein the first method is to implant bone on the periphery of an undeveloped acetabulum, namely hip cup installation and hip joint replacement, but the method has limitations, the overall structure of the undeveloped acetabulum is smaller, and the bone implantation cannot meet the installation of a larger hip cup. The second method is to make an artificial acetabulum matched with the hip joint of a patient, which consists of an acetabulum cup body and a ceramic lining arranged inside the acetabulum cup body, and when in replacement surgery, screws are driven into the hip joint from the inside of the acetabulum cup body for fixation, so that the ceramic lining is cracked due to the fact that the screws protrude out of the inner surface of the acetabulum cup body and rub against the ceramic lining, and the service life is short.
Disclosure of Invention
The invention aims to solve the technical problems and provides an individualized reverse-folding embedded artificial acetabulum and a manufacturing method thereof, wherein the artificial acetabulum is in close contact with an acetabulum contact surface of a hip joint, is convenient to grow with a pelvis into a whole, adopts an external fixing mode, avoids the phenomenon of liner cracking caused by the friction between a screw protrusion and a liner due to the internal fixing mode of an acetabulum cup body, and prolongs the service life.
The technical solution of the invention is as follows:
the utility model provides an artificial acetabulum of individualized inflection embedding type, includes the mortar cup, with the identical ceramic lining of mortar cup internal surface, its special character lies in: the cup edge of the acetabular cup body is provided with a plurality of embedding bodies which are circumferentially arranged, protrude forwards and are reversely folded, the inner surfaces of the embedding bodies are matched with the bone contact surface, the inner surfaces of the embedding bodies are rough surfaces, the outer surfaces of the embedding bodies are smooth surfaces, and at least two embedding bodies are respectively provided with a screw hole for fixing the embedding bodies on the corresponding ischia, hipbone or pubis.
More preferably, the mortar cup is made of a titanium alloy material.
Further, the rough surface is made of hydroxyapatite.
Further, the embedding body becomes narrower from front to back.
Further, the front end width of the embedding body is 1-2 cm.
Further, the embedding body becomes thinner gradually from front to back.
The manufacturing method of the individual reverse-folding embedded artificial acetabulum comprises the following steps:
1. scanning the pelvis of a patient by adopting a CT (computed tomography) machine, and establishing a pelvis 3d digital model;
2. manufacturing a pelvis resin model according to the pelvis 3d digital model;
3. determining the type of the femoral head of the hip joint to be installed according to the height of a patient, and performing contusion on the acetabulum of the hip joint at the patient part on a pelvis resin model to enable the size of the acetabulum of the hip joint after contusion to be matched with the type of the femoral head of the hip joint to be installed;
4. manufacturing a acetabular cup model in the milled acetabulum by adopting silicon rubber, forming a natural transitional embedding structure at the periphery of the acetabulum, and curing for 3-5min at room temperature;
5. according to the mortar cup model, the weight ratio of 1: 1, preparing a titanium alloy mortar cup body with an embedding body in equal proportion;
6. processing screw holes on the embedding body corresponding to the part with larger contact area with the pelvis;
7. and spraying a hydroxyapatite rough surface on the surface of the embedding body.
8. And manufacturing a ceramic lining matched with the inner surface of the mortar cup body and installing the ceramic lining in the mortar cup.
The invention has the beneficial effects that:
1. on the basis of not enlarging the acetabulum of the hip joint, the embedding body is in close contact with the acetabulum contact surface, so that the acetabulum cup body and the pelvis grow into a whole conveniently.
2. The embedding body is connected with the pelvis through screws, and the connecting structure is firm; the mortar cup body adopts the external fixation mode, has avoided the mortar cup body to cause the inside lining fracture phenomenon to take place because of friction between the outstanding and inside lining of screw that the internal fixation mode leads to.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an internal structural view of FIG. 1;
in the figure: 1-mortar cup body, 2-ceramic lining, 3-embedding body, 4-screw hole and 5-rough surface.
Detailed Description
As shown in fig. 1 and 2, an individualized reverse-folding embedded artificial acetabulum comprises an acetabulum cup body 1 and a ceramic lining 2 which is matched with the inner surface of the acetabulum cup body 1, wherein three embedded bodies 3 which are circumferentially arranged, protrude forwards and are reversely folded are arranged at the cup edge of the acetabulum cup body 1, the inner surface of each embedded body 3 is matched with a bone contact surface, the inner surface of each embedded body 3 is a rough surface 5, the rough surface is a spray coating layer, the outer surface of each embedded body 3 is a smooth surface, each embedded body 3 is gradually narrowed from front to back, the width of the front end of each embedded body 3 is 1.5cm, each embedded body 3 is gradually thinned from front to back, and at least two embedded bodies 3 are respectively provided with a screw hole 4 for fixing the embedded bodies 3 on corresponding ischium bones, hip bones or pubic bones.
The manufacturing method of the individual reverse-folding embedded artificial acetabulum comprises the following steps:
1. scanning the pelvis of a patient by adopting a CT (computed tomography) machine, and establishing a pelvis 3d digital model;
2. manufacturing a pelvis resin model according to the pelvis 3d digital model;
3. determining the type of the femoral head of the hip joint to be installed according to the height of a patient, and performing contusion on the acetabulum of the hip joint at the patient part on a pelvis resin model to enable the size of the acetabulum of the hip joint after contusion to be matched with the type of the femoral head of the hip joint to be installed;
4. manufacturing a acetabular cup model in the milled acetabulum by adopting silicon rubber, forming a natural transitional embedding structure at the periphery of the acetabulum, and curing for 3-5min at room temperature;
5. according to the mortar cup model, the weight ratio of 1: 1, preparing a titanium alloy mortar cup body 1 with an embedding body 3 in equal proportion;
6. processing a screw hole 4 on the embedding body 3 corresponding to a part with a larger contact area with the pelvis;
7. the inner surface of the embedding body 3 is sprayed with a hydroxyapatite rough surface 5.
8. And manufacturing a ceramic lining 2 matched with the inner surface of the mortar cup body 1 and installing the ceramic lining in the mortar cup.
Claims (7)
1. The utility model provides an artificial acetabulum of individualized inflection embedding type, includes the mortar cup, with the identical ceramic lining of mortar cup internal surface, its special character lies in: the cup edge of the acetabular cup body is provided with a plurality of embedding bodies which are circumferentially arranged, protrude forwards and are reversely folded, the inner surfaces of the embedding bodies are matched with the bone contact surface, the inner surfaces of the embedding bodies are rough surfaces, the outer surfaces of the embedding bodies are smooth surfaces, and at least two embedding bodies are respectively provided with a screw hole for fixing the embedding bodies on the corresponding ischia, hipbone or pubis.
2. The individualized, reverse-folded, embedded artificial acetabulum according to claim 1, wherein: the mortar cup body is made of a titanium alloy material.
3. The individualized, reverse-folded, embedded artificial acetabulum according to claim 1, wherein: the rough surface is made of hydroxyapatite.
4. The individualized, reverse-folded, embedded artificial acetabulum according to claim 1, wherein: the embedding body becomes narrower from front to back.
5. The individualized, reverse-folded, embedded artificial acetabulum according to claim 1, wherein: the front end width of the embedding body is 1-2 cm.
6. The individualized, reverse-folded, embedded artificial acetabulum according to claim 1, wherein: the embedding body becomes thinner gradually from front to back.
7. The method for manufacturing the individualized reverse-folding embedding type artificial acetabulum according to claim 1, wherein the steps are as follows:
1) scanning the pelvis of the patient by adopting a CT (computed tomography) machine, and establishing a pelvis 3d digital model;
2) manufacturing a pelvis resin model according to the pelvis 3d digital model;
3) determining the type of the femoral head of the hip joint to be installed according to the height of a patient, and performing contusion on the acetabulum of the hip joint at the patient part on a pelvis resin model to enable the size of the acetabulum of the hip joint after contusion to be matched with the type of the femoral head of the hip joint to be installed;
4) manufacturing a acetabular cup model in the milled acetabulum by adopting silicon rubber, forming a natural transitional embedding structure at the periphery of the acetabulum, and curing for 3-5min at room temperature;
5) according to the mortar cup model, according to 1: 1, preparing a titanium alloy mortar cup body with an embedding body in equal proportion;
6) processing screw holes on the embedding body corresponding to the part with larger contact area with the pelvis;
7) spraying a hydroxyapatite rough surface on the surface in the embedding body;
8) and manufacturing a ceramic lining matched with the inner surface of the mortar cup body and installing the ceramic lining in the mortar cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090059.4A CN112773575A (en) | 2021-01-22 | 2021-01-22 | Individualized reverse-folding embedded artificial acetabulum and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110090059.4A CN112773575A (en) | 2021-01-22 | 2021-01-22 | Individualized reverse-folding embedded artificial acetabulum and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112773575A true CN112773575A (en) | 2021-05-11 |
Family
ID=75758648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110090059.4A Pending CN112773575A (en) | 2021-01-22 | 2021-01-22 | Individualized reverse-folding embedded artificial acetabulum and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112773575A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1588677A2 (en) * | 2004-04-20 | 2005-10-26 | Finsbury (Development) Limited | Acetabular prosthesis |
| US20060058887A1 (en) * | 2004-09-15 | 2006-03-16 | Desmet Koen | Unitary acetabular cup prosthesis with extension for deficient acetabulum |
| US20080243458A1 (en) * | 2004-03-30 | 2008-10-02 | Roberta Martinetti | Method for the Production of a Biologically Active Prosthetic Device for the Reconstruction of Bone Tissue and the Prosthetic Device Itself |
| US20130199259A1 (en) * | 2012-02-07 | 2013-08-08 | Biomet Manufacturing Corporation | Acetabular Prosthesis |
| US20170143495A1 (en) * | 2014-06-05 | 2017-05-25 | Ossis Limited | Implant Surfaces |
| CN214761631U (en) * | 2021-01-22 | 2021-11-19 | 曾祥一 | Individualized reverse-folding embedded artificial acetabulum |
-
2021
- 2021-01-22 CN CN202110090059.4A patent/CN112773575A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080243458A1 (en) * | 2004-03-30 | 2008-10-02 | Roberta Martinetti | Method for the Production of a Biologically Active Prosthetic Device for the Reconstruction of Bone Tissue and the Prosthetic Device Itself |
| EP1588677A2 (en) * | 2004-04-20 | 2005-10-26 | Finsbury (Development) Limited | Acetabular prosthesis |
| US20060058887A1 (en) * | 2004-09-15 | 2006-03-16 | Desmet Koen | Unitary acetabular cup prosthesis with extension for deficient acetabulum |
| US20130199259A1 (en) * | 2012-02-07 | 2013-08-08 | Biomet Manufacturing Corporation | Acetabular Prosthesis |
| US20170143495A1 (en) * | 2014-06-05 | 2017-05-25 | Ossis Limited | Implant Surfaces |
| CN214761631U (en) * | 2021-01-22 | 2021-11-19 | 曾祥一 | Individualized reverse-folding embedded artificial acetabulum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018200989B2 (en) | Implant components and methods | |
| US10960454B2 (en) | Acetabular prosthesis | |
| US7402177B2 (en) | Polymeric acetabular cup | |
| CN108210128B (en) | Artificial α femoral stem prosthesis | |
| JP4201905B2 (en) | Acetabular cup | |
| JP2008531146A (en) | Set that constitutes a surface reconstruction hip implant | |
| US20230023358A1 (en) | Coating for an implant | |
| CN214761631U (en) | Individualized reverse-folding embedded artificial acetabulum | |
| EP4312888A1 (en) | 3d printed monoblock orthopaedic surgical implant with customized patient-specific augment | |
| CN109157307B (en) | Pelvic filling prosthesis | |
| DeVasConCellos et al. | Patient specific implants for amputation prostheses: Design, manufacture and analysis | |
| CN112773575A (en) | Individualized reverse-folding embedded artificial acetabulum and manufacturing method | |
| EP3285691B1 (en) | Cotyloid prosthesis for hipbone prostheses | |
| CN114052995A (en) | 3D printing personalized combined acetabular cup prosthesis and preparation and use methods thereof | |
| CN205359715U (en) | Artifical hip joint handle that contains porous structure | |
| CN210631347U (en) | Acetabular lining and acetabular outer cup of artificial total hip joint | |
| CN213722663U (en) | Local replacement system for femoral head | |
| GB2118441A (en) | Articulating joint prostheses | |
| CN212308139U (en) | Femoral prosthesis for retaining femoral head | |
| CN210932049U (en) | Abduction-adduction large-mobility anti-dislocation total hip joint prosthesis | |
| CN114366395A (en) | Sacrum pubis bilateral osseointegration hemi-pelvic prosthesis | |
| CN115245409A (en) | Integrated acetabulum revision prosthesis based on 3D printing and preparation method thereof | |
| US6383226B1 (en) | Prostheses having curvilinear collars | |
| Wang et al. | The finite element analysis of the shape of the femoral head prosthesis on the influence of the hip joint | |
| US12004956B1 (en) | Acetabular reconstruction prosthesis with piling-cup system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |