Puncture assistance system

By identifying the cross-sectional feature distribution of puncture images in image navigation, a needle body point target sequence is formed and the needle tip position is determined, solving the problems of needle body segmentation and inaccurate positioning in traditional methods, and realizing high-precision needle tip positioning and puncture assistance.

CN122229562APending Publication Date: 2026-06-19WUHAN UNITED IMAGING HEALTHCARE SURGICAL TECH CO LTD
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Patent Information

Application Number
CN202411877972.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

During puncture, traditional needle tip positioning methods are prone to problems such as needle breakage and insufficient needle tip positioning accuracy, especially when the needle brightness is uneven and the geometric features are not obvious in image navigation.

Method used

By identifying the image cross-sectional sequence of the puncture navigation image, and utilizing the image feature distribution of the needle body cross-section, a needle body point target sequence is formed. The needle tip position is determined based on the image feature value change information, reducing the dependence on the needle tip geometric features. Segmented tracking and neural network tracking methods are used to improve positioning accuracy.

Benefits of technology

It effectively avoids needle breakage and improves the accuracy of needle tip positioning and puncture precision. It can accurately position the needle tip under CT imaging mode and adapt to the effects of CT volume effect and metal implants.

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Abstract

This application relates to the field of puncture image navigation technology, and provides a puncture assistance system that can avoid the problem of needle breakage and reduce dependence on needle tip geometry. Based on the image feature distribution of the needle cross-section, this application identifies needle points in the image cross-sectional sequence of the puncture navigation image to form a needle point target sequence; the image cross-section is a section perpendicular to the long axis of the needle in the puncture navigation image; based on the image feature values ​​of the needle points in the needle point target sequence, image feature value change information is obtained; based on the image feature value change information, the needle tip is determined in the needle point target sequence to obtain a needle tip positioning result; the needle tip positioning result is used to assist puncture.
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