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Reverse engineering in CAD model reconstruction of customized artificial joint
Yan-Ping Lin1, Cheng-Tao Wang, Ke-Rong Dai
1School of Mechanical and Power Enginnering, Shanghai Jiaotong University, No. 1954 Huashan Road, Shanghai, China.
Medical Engineering & Physics
|January 12, 2005
Summary
This study introduces a novel method for creating customized artificial knee joints. By using coordinate measuring machines (CMM) and reverse engineering, complex joint surfaces are modeled to reduce production time and cost.
Area of Science:
- Biomedical Engineering
- Computer-Aided Design (CAD)
- Manufacturing Technology
Background:
- Customized artificial joint design is crucial for patient outcomes.
- Current production cycles and costs for prosthetics can be high.
- A need exists for efficient methods to generate patient-specific joint models.
Purpose of the Study:
- To present a method for generating complex artificial knee joint surfaces.
- To establish a model database for customized prosthesis design.
- To reduce production cycle time and cost in artificial joint manufacturing.
Main Methods:
- Utilizing a coordinate measuring machine (CMM) to capture data from normative prostheses.
- Processing point cloud data and constructing free-form surfaces using reverse engineering software (Surfacer).
- Creating solid CAD models from generated surfaces for a prosthesis database.
Main Results:
- A systematic method for data acquisition and processing was established.
- Free-form surfaces were successfully reconstructed from measured data.
- A database of artificial knee joint CAD models was formed, enabling customization.
Conclusions:
- The proposed method effectively generates complex artificial knee joint surfaces.
- The developed model database facilitates efficient customization of prostheses.
- This approach offers a viable solution for reducing production time and cost in artificial joint design.
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