A personalized β‑ti‑15mo alloy‑co‑28cr‑6mo alloy‑al 2 o 3 Ceramic acetabular artificial bone bracket
A technology of co-28cr-6mo, -ti-15mo, applied in medical science, prosthesis, etc., can solve problems such as complex defect shape, loose implanted area, and poor stability, and achieve enhanced mechanical strength and low surface friction coefficient, the effect of high wear resistance
Inactive Publication Date: 2017-03-15
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the electron beam fusion forming method needs high-power laser and electron beam, and its safety and stability are not as good as the selective laser sintering method. The stent requires high anatomical precision, and steps should be avoided
Moreover, most of the computer designs are regular geometric shapes, and there are many types of fractures, and the shape of the defect is complex. The shape of the implant designed by the computer alone is not as good as the three-dimensional CAD model designed by using MIMCS software after CT reconstruction.
In addition, this invention ignores the functional requirements of the joint, and the complete use of metal materials will produce wear particles that will cause osteolysis and loosening of the implanted area
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0015] Thin-slice CT scanning was performed on the acetabular fracture area to obtain a thin-slice CT image including the fracture defect, and a CAD three-dimensional model was designed using MIMCS software, and the final design parameters were input into the 3D printer. 15wt%Mo, 85wt%Ti powder, 66wt% Co, 28wt% Cr, 6wt% Mo powder and Al 2 o 3 The powders are respectively added to the powder tank of the selective laser sintering system, using selective laser sintering technology, heated to 1200°C under the protection of inert gas, and the heating rate is 5°C / min~10°C / min, and the integrated porous β- Ti-15Mo alloy trabecular bone-Co-28Cr-6Mo support layer-Al 2 o 3 The main part of the ceramic articular surface is annealed after being kept warm for 2 hours and gradually cooled with the furnace at a cooling rate of 5°C / min~10°C / min. The printed porous β-Ti-15Mo alloy artificial bone trabecular, Co-28Cr-6Mo alloy support layer, Al 2 o 3 The main part of the ceramic articular ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| tensile strength | aaaaa | aaaaa |
Login to View More
Abstract
The invention belongs to the field of a medical apparatus, and in particular discloses an individual beta-Ti-15Mo alloy-Co-28Cr-6Mo alloy-Al2O3 ceramic acetabulum artificial bone scaffold. According to an institution of acetabulum fracture and defect part in a patient, the individual beta-Ti-15Mo alloy-Co-28Cr-6Mo alloy-Al2O3 ceramic acetabulum artificial bone scaffold which is matched with the defect part is designed through reverse engineering and a computer-aided design (CAD) technology and is made by use of a selective laser sintering technology, wherein the artificial bone scaffold is composed of a porous beta-Ti-15Mo alloy artificial bone trabecula, a 2Co-28Cr-6Mo alloy supporting layer and an Al2O3 ceramic articular surface. The artificial bone scaffold disclosed by the invention is capable of filling the gap in acetabulum artificial bone and providing a new treatment thought for acetabulum fracture, so that a feasible scheme is offered for individual-based treatment.
Description
technical field [0001] The invention belongs to the field of medical equipment, specifically personalized β-Ti-15Mo alloy-Co-28Cr-6Mo alloy-Al 2 o 3 Ceramic acetabular artificial bone bracket. Background technique [0002] The hip joint is the largest joint in the human body. Due to its complex anatomy, it needs to play a load-bearing role, has large joint activities, and the variety of fracture types makes the repair and treatment of acetabular fractures difficult. General internal fixation has difficulties in exposure, easy damage to the sciatic nerve, and postoperative complications such as screw loosening, and has high requirements for orthopedic surgeons. The use of artificial bone scaffolds to fill and repair bone defects is a common treatment method. For example, the patent 200810227420.8 preparation and application of medical metal artificial trabecular bone uses electron beam fusion forming method to make titanium alloy trabecular bone for filling the defect. Ho...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/42A61L27/56
Inventor 谢杨章云童金光辉孙晓飞马兵李超董薇夏琰李刚
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY