Medical needle with micro-reflector structure on surface and preparation method thereof

A reflector and medical technology, used in radiotherapy, needles, trocars, etc., can solve the problem of not taking into account the puncture force and visibility, and achieve the effect of complex processing shape, small heat-affected zone, and improved placement accuracy.

Inactive Publication Date: 2015-10-14
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only considers the puncture force during the puncture process of medical needles, and does not take into account the requirements of both puncture force and visibility

Method used

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  • Medical needle with micro-reflector structure on surface and preparation method thereof
  • Medical needle with micro-reflector structure on surface and preparation method thereof
  • Medical needle with micro-reflector structure on surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, a medical needle with a micro-reflector structure on the surface, a micro-reflector structure array 2 is fabricated on the surface 1 of the medical needle.

[0021] Ultra-short pulse 8ps laser is used, laser process parameters are set, the side length of the micro-reflector structure is 100-200 μm, the depth of the micro-reflector structure is 30-40 μm, and the characteristic radius of the mixed arc is processed by controlling the pulse overlap rate in the feed direction to 50 μm. Such as figure 2 shown.

[0022] Such as image 3 As shown, the microreflector structure array is distributed on the surface of the medical needle, and 8 microreflector arrays are uniformly distributed in the circumferential direction, and the microreflector structures are staggered at a certain angle between adjacent circumference...

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PUM

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Abstract

The invention belongs to the field of laser micro-manufacturing of medical apparatus and instruments, and relates to a medical needle with a micro-reflector structure on the surface and a preparation method thereof particularly. According to the medical needle with the micro-reflector structure on the surface and the preparation method thereof, a micro-reflector structure array with blend arc characteristic is machined on the surface of the medical needle through the laser micro-machining technology, the interaction force between the medical needle and soft tissues is decreased during the puncturing process, deformation and movement of the soft tissues are decreased, curve of the medical needle is decreased, the ultrasound visuality effect in the puncturing process is improved, and placing precision in the puncturing process is improved. The medical needle with the micro-reflector structure on the surface can be widely used in a minimally invasive surgery such as subcutaneous injection, local anesthesia, blood sampling, biopsy and radiotherapy, accurate placing of the medical needle in the puncturing process is achieved, and validity of minimally invasive interventional examination and therapy of the medical needle are improved.

Description

technical field [0001] The invention belongs to the field of laser micro-manufacturing of medical instruments, in particular to a medical needle with a micro-reflector structure on the surface and a preparation method thereof. Background technique [0002] Medical needles are widely used in minimally invasive surgical procedures such as subcutaneous injections, local anesthesia, blood sampling, puncture biopsy, and radiation therapy. The puncture process of medical needles will lead to deformation of soft tissue and bending of medical needles, which will cause errors in the placement of medical needles, resulting in a high rate of misdiagnosis or inability to effectively kill tumor cells. Accurate placement of medical needles is an important factor in determining the effectiveness of medical needle minimally invasive interventional examinations and treatments. [0003] The results of clinical medical research reveal that the reasons for the placement error of medical needle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32A61B5/15A61B10/02A61N5/00A61M19/00B23K26/36
Inventor 王兴盛康敏傅秀清杨勇鲜洁宇
Owner NANJING AGRICULTURAL UNIVERSITY
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