Method of Implicit Surface Algorithm for Simulating Path Planning of Soft Tissue Surgery

Abstract

The present invention relates to a method for simulating and simulating soft tissue surgery path planning using an implicit surface algorithm: S1: Acquiring medical image data of soft tissue parts in a specific case; S2: Establishing a three-dimensional geometric model; S3: Obtaining instrument feature data for resection surgery; S4: Based on Human-computer interaction interface design, tracking and positioning the operation of the physical object or model of the surgical instrument for soft tissue resection surgery, calculating its relative position with the anatomical model, and detecting the operation volume of the resection instrument at each moment; S5: Based on the implicit surface algorithm, the The operating amount is applied to the soft tissue tissue model, and the corresponding action amount corresponding to the current operating amount is calculated according to the characteristics of the device. The action amount includes the effective ablation area and ablation contour of the tissue by the ultrasonic scalpel; S6: According to the calculated action amount, edit Modify the tissue model to show the dynamic changes including the path extension of the cut plane in the operation and the expansion of the boundary contour of the wound. The present invention can give users a more comprehensive and real pre-operative preview experience.

Description

A method for simulating soft tissue surgical path planning using implicit surface algorithm technical field The present invention relates to a kind of implicit surface algorithm for simulating the method for simulating soft tissue surgical path planning, belonging to the The field of computer surgery simulation simulation technology. Background technique The related prior art that the present invention relates to is as follows: [0003] 1. The minimally invasive prostate surgery simulator developed by the inventor Shen Yunhe [1, 2]. 2. National Research Council of Canada (NRC) Brain Surgery Simulator: Brain Surgery Simulator (2012 paper report Mention a method similar to 1) [3] [0005] 3. Bone surgery simulation such as orthopaedics or dentistry [4]: ​​a method similar to 1. [0006] 4. The liver surgery planning system of the University of Tsukuba, Japan: the old method, the same field, the same operation [5-7]. [0007] 5. European INRIA Institute for liver resectio...

AI Technical Summary

Problems solved by technology

[0037] Defects of the existing technology: the keyboard and mouse operation interface used by traditional surgical planning software has poor applicability and has no similarity with the actual operation interface

Gradual, arbitrary, and repeated surgical operations are continuously subdivided in the local part of the model to form an intricate structure, which increases the error rate of the explicit algorithm, reduces reliability, and makes it difficult to control the complexity of the cut plane boundary

[0040] The grid modeling of a specific case is inefficient, the process is complicated, it cannot be completed automatically, and it takes a long time

The process of establishing a dynamic simulation model of a virtual patient's organs and tissues in a surgical simulator is more complicated

These two main technical difficulties restrict the feasibility and practicability of using the surgical simulation simulator as the surgical planning system

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