Computing stable contact interface for customized surgical jigs
Computing stable contact interface for customized surgical jigs
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DOI：
10.1109/icra.2015.7140064
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
Xiaoting Zhang;Ka-Chun Chan;Charlie C. L. Wang;K. Wong;S. Kumta
中科院分区：
文献类型：
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作者：
Xiaoting Zhang;Ka-Chun Chan;Charlie C. L. Wang;K. Wong;S. Kumta
本文提出了一个框架，计算稳定的接触界面，自动设计定制夹具用于骨手术。给定多边形网格表示的骨的表面模型，我们找出表面上的一个小区域作为定制夹具的接口，使其能够在定向夹紧力下稳定地固定在骨上。在我们的公式中允许夹紧力方向的变化。此外，用作稳定接触的界面的表面区域也必须是可拆卸的，使得夹具和骨可以在移除夹紧力之后分离。根据运动约束条件，将接触稳定性分析公式化为半空间公共区域的高斯映射。提出了一种泛洪算法来确定骨骼表面上的那些可拆卸且稳定的接触界面，其中接触表面随后被转换成待通过增材制造制造的夹具的实体模型。实验测试，以验证我们的方法所产生的夹具和骨之间的稳定接触。
This paper presents a framework to compute stable contact interfaces for automatically designing customized jigs used in bone surgeries. Given the surface model of a bone represented by polygonal meshes, we find out a small region on the surface to be used as the interface of a customized jig so that it can be stably fixed on the bone under a directional clamping force. The variation of directions on the clamping force is allowed in our formulation. Moreover, the surface region serves as the interface of stable contact must also be disassemblable so that the jig and the bone can be separated after removing the clamping force. The analysis of stable contact is formulated on a Gaussian map by the common regions of half-spaces according to the motion restrictions. A flooding algorithm is proposed to determine those disassemblable and stable contact interfaces on the surface of a bone, where the contact surfaces are later converted into the solid model of a jig to be fabricated by additive manufacturing. Experimental tests are taken to verify the stable contact between a bone and the jig generated by our approach.