基于机器学习的生成框架,用于反向设计穿孔针偏斜曲线
Yaozong Huang1, Fan Zhang1, Fanyang Zhang1
1Laboratory of Intelligent Control and Robotics, Shanghai University of Engineering Science, Shanghai, People's Republic of China.
Computer methods in biomechanics and biomedical engineering
|December 20, 2025
概括
本研究提出了一种机器学习框架,用于设计精确导航软组织的医疗针. 该生成模型优化了针尖参数以获得准确的偏移曲线,提高了外科手术的精度.
科学领域:
- 医疗器械设计 医疗器械设计
- 机器学习应用程序 机器学习应用程序
- 生物医学工程 生物医学工程
背景情况:
- 医学针在软组织中的精确导航仍然是一个重大挑战.
- 目前设计针轨迹的方法缺乏适应性和精度.
研究的目的:
- 开发一个生成的机器学习框架,用于反向设计穿孔针曲线.
- 为了获得最佳的针尖设计参数,以便在软组织中精确导航.
主要方法:
- 一个具有逆向预测和前向验证组件的生成机器学习框架.
- 一种基于欧勒-伯努利束理论的针-组织相互作用物理模型.
- 通过参数抽样和集体学习的应用生成10,000个数据集.
主要成果:
- 曲线分类器实现了F1分数从0.945到0.969;偏向曲线回归器显示R2为0.9981的0.0008毫米平均误差.
- 预测设计参数的平均相对误差在5%以内,使用集体学习减少了4.3%.
- 经过验证的最佳设计显示出与目标轨迹 (NRMSE 1.15903E-4,偏差 ±0.3 mm) 的良好一致.
结论:
- 该框架为精确的医疗针头尖端设计提供了有效的解决方案.
- 这项研究为智能医疗器械设计建立了新的范式.
- 开发的模型能够准确地预测和优化针偏移曲线,用于目标组织导航.
相关概念视频
Design of Prismatic Beams for Bending
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and stress...
Design Example: Traverse Angle Computations
Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
Introduction to Horizontal Curves
Horizontal curves are essential in highway and railroad design, ensuring smooth and safe transitions between straight path segments, or tangents. These curves allow vehicles to maintain speed without abrupt changes, minimizing accidents and improving travel efficiency.A horizontal curve is typically defined by its geometric relationship to two tangents that meet at an intersection point (P.I.), where a simple curve is introduced to connect them. The back tangent refers to the initial tangent...
Introduction to Vertical Curves
Vertical curves are parabolic transitions that connect different grades on highways and railroads, ensuring a smooth alignment between back and forward tangents. The back tangent represents the initial grade, while the forward tangent defines the subsequent grade. These curves can be symmetrical, with equal tangent lengths, or nonsymmetrical, with varying lengths. The key points defining a vertical curve include the Point of Vertical Intersection (P.V.I.), where the tangents meet; the Point of...
Vertical Curve: Problem Solving
Vertical curves provide the transition between two roadway grades, ensuring safety, comfort, and functionality. Calculating elevations at specific stations along the curve involves several systematic steps based on the curve's geometry and provided design parameters.The vertical curve is defined by its length, grades, Point of Vertical Intersection (P.V.I.) location, and P.V.I. elevation. The stations of the Point of Vertical Curvature (P.V.C.), where the curve begins, and the Point of Vertical...
Design Example: Setting a Curve Using Design Data
Designing and plotting a curve using field data requires precise calculations and execution. A horizontal curve with a radius of 200 meters and an intersection angle of 20 degrees is established using the method of perpendicular offsets from the long chord. The long chord, which spans between the curve's endpoints, is calculated to be 69.46 meters in length. To maintain accuracy in plotting, intervals of 3 meters are selected along the chord.The engineer determines the offset distances for each...


