Magnetic resonance imaging (MRI) compatible needle knife

Abstract

The invention provides a magnetic resonance imaging compatible needle knife, which comprises a needle knife handle, a needle knife body and a needle knife head. The needle knife body and the needle knife head are made of a paramagnetic metal material, and a layer of diamagnetic metal material coat is coated on the paramagnetic metal material. In the needle knife, because the diamagnetic metal material coat can counteract the magnetization effect of an external magnetic field on the paramagnetic metal material, the paramagnetic metal material does not cause the magnetic distortion of magnetic resonance equipment, and meanwhile does not produce artifacts in scanned images. Moreover, because the paramagnetic and diamagnetic metal materials consist of metal elements, the mechanical propertiesof the needle knife body and the needle knife head can be ensured so as to meet the requirement of needle knife operations.

Description

technical field [0001] The invention designs a medical device, in particular to an MRI compatible needle knife for magnetic resonance imaging. Background technique [0002] A kind of needle knife is disclosed among the Chinese patent 98208305. This acupotomy organically integrates the surgical treatment method of Western medicine and the acupuncture treatment method of Chinese medicine in the treatment of diseases, and turns the open operation of Western medicine into a closed operation. Needle-knife surgery can not only achieve the purpose of cutting, loosening, peeling, and clearing the lesion, but also does not need to cut the skin and related tissues, and avoids the sequelae and complications of surgery, thus becoming a clinically applicable, An operational medical technology. [0003] However, due to the characteristics of closed surgery such as needle-knife surgery, doctors cannot directly see the lesion during the operation, so needle-knife surgery requires doctors ...

AI Technical Summary

Problems solved by technology

Although the mechanical properties of this needle knife can meet the requirements, when it is used for magnetic resonance imaging, it will still produce serious artifacts (artefact) in the scanned image, especially at the position of the needle knife head, so that doctors cannot Observing the lesion area well and accurately judging the position of the needle cutter head

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