基于特征点映射关系的接骨板系列化设计方法  

Serial Design Method for Plates Based on Feature Points Mapping Relation

作　　者：王淋[1,2] 何坤金[1,2] 陈正鸣[1,2] 邹泽宇[1,2] 项炜[3] 

机构地区：[1]河海大学物联网工程学院,常州213022 [2]常州市图形图像与骨科植入物数字化技术重点实验室,常州213022 [3]常州市第一人民医院骨科,常州213003

出　　处：《计算机辅助设计与图形学学报》2016年第9期1587-1597,共11页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(61472118);江苏省科技支撑计划(BE2014048);江苏省自然科学基金(BK20141158);江苏省普通高校研究生科研创新计划项目(KYZZ15_0152)

摘　　要：为快速设计符合患骨的多类型系列化接骨板,减少手术中接骨板的调整次数,提出基于特征点映射关系的接骨板快速系列化设计方法.首先基于已有骨骼平均化点云模型构建曲面模型,并对其进行参数表示生成骨骼特征模型;其次基于骨骼特征模型的感兴趣区域重构出以特征线为中心的接骨板贴合面,并对其配置参数生成贴合面特征;最后建立骨骼特征模型的感兴趣区域和接骨板贴合面两者特征点间的映射关系,实现接骨板贴合面随感兴趣区域变化,从而通过后期加工处理生产出系列化接骨板.以桡骨远端掌侧接骨板和胫骨近端内侧T型接骨板为例进行实验,验证了该方法的有效性和可行性.To design serial plates meeting the requirements of various fractures and also reduce the adjustment during surgery, this paper proposes a method to quickly design serial plates based on feature points mapping relation. First, based on average point cloud model of bone, a surface model is constructed. After parametric representation for the surface model, a feature model is obtained. Second, the abutted surface of the plate is reconstructed centered with characteristic curves obtained from region-of-interest on the feature model of bone. Then, the feature model of the abutted surface is established through parametric design. Finally, the mapping relation between the feature points of region-of-interest and of the abutted surface is set up. Consequently, serial plates are generated rapidly through post-processing. Taking the plate for volar distal radius and the T-plate for proximal tibia as examples, the feasibility and validity of the proposed method is verified.

关 键 词：参数表示 特征模型 特征点映射关系 系列化设计 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]