Medical puncture needle with spiral type microstructure and manufacturing method thereof

A puncture needle and micro-texture technology, applied in the direction of puncture needles, trocars, etc., can solve problems such as poor stability, inability to effectively maintain the lubrication effect for a long time, uneven adsorption of lubricants, etc.

Inactive Publication Date: 2015-08-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the surface of conventional medical puncture needles generally absorbs medical lubricants when they leave the factory. The purpose is to improve surface lubricity and reduce puncture resistan...

Method used

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  • Medical puncture needle with spiral type microstructure and manufacturing method thereof
  • Medical puncture needle with spiral type microstructure and manufacturing method thereof

Examples

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Effect test

example 1

[0015] A preparation of a medical puncture needle with a helical micro-texture, the puncture needle 1 is a medical 316 stainless steel biopsy puncture needle, the micro-textured groove width W is about 80nm, the groove depth D is about 20nm, and the groove spacing P is about 300nm , the angle α between the helix and the axis of the puncture needle is about 70°. Its preparation method is as follows:

[0016] (1) Polish the surface of the puncture needle made of 316 stainless steel to remove the surface contamination layer, and ultrasonically clean it in deionized water for 20 minutes, then immerse the puncture needle in absolute ethanol, and use ultrasonic cleaning for 20 minutes to clean the surface;

[0017] (2) Clamp the puncture needle in the femtosecond laser processor system, keep the femtosecond laser pulse 2 fixed, adjust the energy of the laser pulse to 1 μJ, the frequency to 500 Hz, scan once, and use the rotation and feed movement of the puncture needle to Spiral mi...

example 2

[0021] A preparation of a spiral micro-textured medical puncture needle. The puncture needle 1 is a medical injection needle made of tungsten. The angle α between the line and the axis of the injection needle is about 50°. Its preparation method is as follows:

[0022] (1) Polish the surface of the injection needle made of tungsten to remove the surface contamination layer, and ultrasonically clean it in deionized water for 20 minutes, then immerse the puncture needle in absolute ethanol, and use ultrasonic cleaning for 20 minutes to clean the surface;

[0023] (2) Clamp the injection needle in the femtosecond laser processor system, keep the femtosecond laser pulse 2 fixed, adjust the laser pulse energy to 1.5 μJ, the frequency to 1000 Hz, scan twice, and use the rotation and feed movement of the injection needle Process the helical micro-texture covering the surface of the puncture needle;

[0024] (3) The puncture needle after surface laser texturing was ultrasonically cl...

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Abstract

The invention belongs to the field of medical puncture instruments, and particularly relates to a medical puncture needle with a spiral type microstructure and a manufacturing method thereof. The femtosecond laser machining technology is adopted, femtosecond laser pulses are kept fixed in the machining process, and the spiral type microstructure is machined on the surface of the puncture needle by controlling rotation and feed movement of the puncture needle. In the puncture process of the medical puncture needle, the microstructure is organically combined with tissue fluid or lubricating agents in a punctured tissue, adsorption and storage of the lubricating agents are facilitated, generation of fluid power lubrication is facilitated, the resistance in the puncture process is effectively reduced, the puncture precision is improved, and pains brought in the puncture process are reduced.

Description

1. Technical field [0001] The invention provides a medical puncture needle with a helical micro-texture and a preparation method thereof, which belong to the field of medical puncture devices involving applications such as intravenous injection, biopsy puncture, tissue sampling and deep brain stimulation. 2. Background technology [0002] Medical puncture needles are one of the most commonly used medical devices and are widely used in various minimally invasive percutaneous procedures, such as: deep brain biopsy, local block anesthesia, and blood sample collection. With the development of society and technology, people's requirements for enhancing the puncture accuracy and reducing the pain during the puncture process are constantly increasing. At present, reports on improving the puncture accuracy and reducing the pain during the puncture process mainly focus on reducing the needle diameter, optimizing the sharpness of the tip, and coating the surface with lubricant, but th...

Claims

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Application Information

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IPC IPC(8): A61B17/34
CPCA61B17/34
Inventor 张克栋邓建新李岩邢佑强
Owner SHANDONG UNIV
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