A three-dimensional navigation controllable magnetic field device based on permanent magnet array

Abstract

The invention relates to a three-dimensional navigation controllable magnetic field device based on a permanent magnet array, which includes a base, a ring, a lifting column and a permanent magnet. Lifting columns are installed, and a permanent magnet is installed on the front end of each lifting column, and the permanent magnet is arranged on the front end of the lifting column on the same surface of the ring. The direction of the magnetic induction intensity of the navigation magnetic field device is adjustable in three-dimensional space, and the size is controllable within a certain range. The puncture path in diagnosis and treatment tasks such as drainage, suction, injection, etc., is especially suitable for navigation control of non-linear puncture paths.

Description

technical field [0001] The invention belongs to the medical field and relates to a three-dimensional navigation controllable magnetic field device based on a permanent magnet array. Background technique [0002] Minimally invasive surgery is one of the key projects and important topics in the development of surgery in the 21st century, and the puncture needle is one of the most basic and commonly used instruments in minimally invasive surgery. When performing minimally invasive surgery using a puncture needle, in order to avoid iatrogenic injury, it is necessary to avoid important organs, bones, blood vessels and other tissues during the puncture of the puncture needle. However, when some lesions are blocked or surrounded by internal tissues such as bones and blood vessels, the existing straight needles cannot penetrate into the lesion through the skin, or the puncture will cause greater iatrogenic damage. Therefore, there is an urgent need for a reliable, bendable, navigab...

AI Technical Summary

Problems solved by technology

Currently, combined coils are usually used to obtain the required magnetic field in its inner area, but the heating of the DC coil will consume most of the energy

[0004] At present, domestic and foreign research on the use of magnetic navigation technology to navigate puncture needles has just begun. Only the submissive needle researched by Dr. Chen Yonghua of the University of Hong Kong has done relevant theoretical work in the early stage, and no one else has done research on it.

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