System and position tracing method for dynamic positioning and tracing internal miniature apparatus

A micro-device and dynamic positioning technology, which is applied in application, medical science, diagnosis, etc., can solve the problems of increasing the volume of internal devices, limiting the use range, and small battery size, so as to achieve time and space, improve efficiency, and simple operation Effect
CN1481754AInactive Publication Date: 2004-03-17CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2004-03-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention is system and method of dynamically positioning and tracking miniature device inside body. The system includes permanent magnet fixed onto the device inside body, at least three magnetic field sensor units fixed outside body, signal processing, A / D converting and calculating unit wired or radio connected to the magnetic field sensor units, and output device to display the motion locus of the device inside body. The present invention realizes the dynamical positioning and tracking via detecting the strength of magnetic field the device inside body produces, processing and converting detected signal, calculating the spatial coordinates of the permanent magnet inside body based on magnetic dipole model and relevant calculation formula, determining the position of the miniature device continuously and display the 3D motion locus of the miniature device. The present invention is used for check of patient.
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Description

Technical field

[0001] The invention relates to a system and a positioning tracking method for determining the position of a micro device in the body by detecting a magnetic field, and dynamically tracking the motion trajectory of the micro device in the body. The invention belongs to the field of medical device auxiliary technology. Background technique

[0002] The accurate positioning of the micro-devices in the patient's body is of great significance in clinical medicine and medical research. So far, in terms of positioning technology of micro-devices in patients, ultrasound imaging technology positioning, nuclear medicine imaging technology (such as CT, MR, etc.) positioning, fluorescence contrast positioning and other technologies are generally used. However, these technologies have the disadvantages of high cost, complicated operation, and not suitable for long-term dynamic positioning observation.

[0003] In order to effectively overcome these weaknesses, various technol...

Claims

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