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Magnetic-navigation joint type puncture needle

A puncture needle, joint type technology, applied in the direction of puncture needle, guide needle, trocar, etc., to reduce iatrogenic injury and expand the scope of application

Inactive Publication Date: 2012-06-20
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research in this area is still in its infancy internationally, and it is still blank in China

Method used

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  • Magnetic-navigation joint type puncture needle
  • Magnetic-navigation joint type puncture needle
  • Magnetic-navigation joint type puncture needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with the examples, the present invention is further described, the following examples are illustrative, not limiting, and the protection scope of the present invention cannot be limited by the following examples.

[0019] A magnetic navigation articulating puncture needle comprises a head section 1 and a needle section 3; the needle section is coaxially installed at the rear of the head section.

[0020] The innovation point of the present invention is:

[0021] The head section is made of high magnetic permeability stainless steel material, and the head section can be actively deflected by the corresponding magnetic force by using an external magnetic field.

[0022] The head section is connected with the coaxially installed needle section at the back by a flexible joint 2, and the needle sections are also coaxially connected by a flexible joint. Both cephalic and needle segments are bendable, but both cephalic and needle segments are less flexibl...

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Abstract

The invention relates to a magnetic-navigation joint type puncture needle which comprises a head section and needle sections, wherein, the head section is made of stainless steel material with high magnetic conductivity and is connected with the following needle sections coaxially mounted with the head section through a flexible joint; two needle sections are also coaxially connected with each other through a flexible joint; the needle sections are made of non-magnetic stainless steel material; the flexible joints adopts serpentine tubes formed by melting and engraving cobalt-chromium alloy through laser; and both the head section and the needle sections can be bent, but the flexibility of the head section and that of the needle sections are smaller than the flexibility of the flexible joints. According to the invention, an extra magnetic field force is used to cause the head section of the needle to deflect, so that the following purposes can be achieved that the insertion direction of the needle can be changed, and the other needle sections also deflect with the deflection of the head section; accurate navigation for and control over puncture path and puncture position when the puncture needle performs a non-direct channel puncture in a human body; the puncture needle provided by the invention can reach niduses which other types of puncture needles can not reach; the application scope of minimally invasive surgery is expanded; iatrogenic injuries can be reduced; and patients can be benefited.

Description

technical field [0001] The invention belongs to the field of medical instruments and relates to a puncture needle, in particular to a magnetic navigation joint type puncture needle. Background technique [0002] Minimally invasive surgery (MIS) 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. Puncture needles are used to complete diagnosis and treatment tasks such as biopsy, drainage, aspiration, and injection in minimally invasive surgery. When using a puncture needle for minimally invasive surgery, it is a very challenging process for the needle to penetrate into the complex human tissue. The structure and its navigation have become one of the important research directions in the field of minimally invasive surgery. [0003] Puncture needles have undergone development from the original traditional rigid straight n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/06A61B17/34A61L31/14A61L31/02
Inventor 王以忠陈永华李达张锐黄华芳赵琦殷岂龙
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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