Abstract: The present disclosure relates to a minimally invasive intervention device and a minimally invasive intervention apparatus including the minimally invasive intervention device. Minimally invasive intervention devices includes an inner layer, an intermediate layer, and an outer layer, the intermediate layer covers an outer peripheral surface of the inner layer, and the outer layer covers an outer peripheral surface of the intermediate layer; and the intermediate layer includes a plurality of line bodies, at least some of the line bodies can transmit signals and/or electric energy.

Abstract: A method for preparing Mg-RE alloys with high strength and ductility using selective laser melting (SLM) additive manufacturing technology includes the following steps of: A. preparing Mg-RE-(Zn)—Zr pre-alloyed spherical powder by gas atomization; B. molding the Mg-RE-(Zn)—Zr pre-alloyed spherical powder using SLM to obtain the Mg-RE alloys with high strength and ductility; and C. conducting heat treatment on the Mg-RE alloys prepared in step B: solid solution+aging treatment or only aging treatment The method adjusts and controls microstructure and mechanical properties of the alloys by adjusting and controlling process parameters of SLM (laser power, scanning speed, hatch spacing, spot diameter, layer thickness, interlayer rotation angle, substrate preheating temperature, partition width and overlapping area width) and process parameters of subsequent heat treatment (temperature and time) to prepare the Mg-RE-(Zn)—Zr alloys with high strength and ductility using SLM process for the first time.

Abstract: The invention provides a line guided 3D model reshaping method, including: 1. extracting a contour of an object from an image, and selecting a contour or main skeleton to create a 2D line database; 2. extracting a 3D editable line, retrieving and suggesting an appropriate 2D contour or skeleton from 2D line database; 3. establishing point-to-point correspondence by matching 2D contour or skeleton to 3D editable line, and reshaping the model using parametric deformation method. By the method, 2D contour or skeleton appropriate for 3D model editable line is automatically suggested from 2D line database of multiple classes of objects to guide 3D model reshaping, and fewer user interactions are required in extracting from input 3D model editable lines such as axes, cross-sections and outlines and producing various types of reshaped models by using parametric deformation method, thereby helping user to design desirable 3D model with speed and ease.

Abstract: The invention provides a structure self-adaptive 3D model editing method, which includes: given a 3D model library, clustering 3D models of same category according to structures; learning a design knowledge prior between components of 3D models in same group; learning a structure switching rule between 3D models in different groups; after user edits a 3D model component, determining a final group of the model according to inter-group design knowledge prior, and editing other components of the model according to intra-group design knowledge prior, so that the model as a whole satisfies design knowledge priors of a category of 3D models. Through editing few components by the user, other components of the model can be optimized automatically and the edited 3D model satisfying prior designs of the model library can be obtained. The invention can be applied to fields of 3D model editing and constructing, computer aided design etc.

Abstract: The invention provides a structure self-adaptive 3D model editing method, which includes: given a 3D model library, clustering 3D models of same category according to structures; learning a design knowledge prior between components of 3D models in same group; learning a structure switching rule between 3D models in different groups; after user edits a 3D model component, determining a final group of the model according to inter-group design knowledge prior, and editing other components of the model according to intra-group design knowledge prior, so that the model as a whole satisfies design knowledge priors of a category of 3D models. Through editing few components by the user, other components of the model can be optimized automatically and the edited 3D model satisfying prior designs of the model library can be obtained. The invention can be applied to fields of 3D model editing and constructing, computer aided design etc.

Abstract: The invention provides a line guided 3D model reshaping method, including: 1. extracting a contour of an object from an image, and selecting a contour or main skeleton to create a 2D line database; 2. extracting a 3D editable line, retrieving and suggesting an appropriate 2D contour or skeleton from 2D line database; 3. establishing point-to-point correspondence by matching 2D contour or skeleton to 3D editable line, and reshaping the model using parametric deformation method. By the method, 2D contour or skeleton appropriate for 3D model editable line is automatically suggested from 2D line database of multiple classes of objects to guide 3D model reshaping, and fewer user interactions are required in extracting from input 3D model editable lines such as axes, cross-sections and outlines and producing various types of reshaped models by using parametric deformation method, thereby helping user to design desirable 3D model with speed and ease.