Bacteriostatic medical stainless steel ossicle needle and its making process

A manufacturing method and stainless steel technology, applied in the field of medical devices, can solve problems such as poor corrosion resistance and achieve the effect of preventing corrosion

Inactive Publication Date: 2007-06-06
GUANGZHOU GENERAL HOSPITAL OF GUANGZHOU MILITARY COMMAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a bacteriostatic stainless steel medical small bone element needle with corrosion resistance in order to overcome the short

Method used

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  • Bacteriostatic medical stainless steel ossicle needle and its making process
  • Bacteriostatic medical stainless steel ossicle needle and its making process

Examples

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specific Embodiment 1

[0031] Referring to Fig. 1 and Fig. 2, this embodiment includes a stainless steel small bone element needle 1. The small bone element needle 1 is composed of a needle handle 11 and a foldable needle head 12. The length a of the needle handle 11 is 203 mm, and the length a of the needle head 12 when folded is b =1mm, and the unfolding time length c=10mm. The surface of the stainless steel small bone element needle 1 is covered with nano-TiO 2 / SiO 2 Composite film 2, nano-TiO 2 / SiO 2 The composite membrane 2 is made of nanoscale titanate and nanoscale silicate. The preparation method is as follows: 1) Degrease the stainless steel small bone element needle 1 (Φ2mm) with acetone, immerse it in the decontamination solution for at least 10 minutes, and the immersion temperature is 70°C-85°C; 2) After washing and drying, soak it in ethanol for later use ; 3) Preparation of nano-TiO by co-hydrolysis of titanate and silicate by sol-gel method 2 / SiO 2 Composite sol, soak the af...

specific Embodiment 2

[0033] The characteristics of this embodiment are: the small bone element needles (Φ2mm) are degreased with acetone, and then immersed in the decontamination solution for 10 minutes at a temperature of 85°C. Pull three times in a sol of butyl titanate and ethyl orthosilicate (Ti:Si=10:1). The wet coating was first dried at 100°C for 5 minutes, then placed in a muffle furnace for heat treatment at 600°C for 30 minutes, and cooled at room temperature for later use.

specific Embodiment 3

[0034] The characteristics of this embodiment are: the small bone element needles (Φ2mm) are degreased with acetone, and then immersed in the decontamination solution for 10 minutes at a temperature of 75°C. Pulled six times in a sol of butyl titanate and ethyl orthosilicate (Ti:Si=7:3). The wet coating was first dried at 100°C for 5 minutes, then placed in a muffle furnace for heat treatment at 300°C for 30 minutes, and then cooled at room temperature for later use.

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Abstract

The present invention is bacteriostatic medical stainless steel ossicle needle and its making process. Structurally, the stainless steel ossicle needle is made of stainless steel and coated with TiO2/SiO2 composite film formed with nanometer level titanate and nanometer level silicate. The making process of the stainless steel ossicle needle includes the following steps: decontaminating medical ossicle needle, water washing and drying; preparing TiO2/SiO2 composite material through a sol-gel process; and forming TiO2/SiO2 composite film in a pulling process while controlling the film thickness by means of the pulling speed and pulling time number; drying the wet coating, heat treatment in a muffle furnace and cooling to room temperature. The present invention coats the medical ossicle needle with TiO2/SiO2 composite film to reach the aims of bacteriostasis and anticorrosion.

Description

technical field [0001] The invention relates to a bacteriostatic stainless steel medical small bone needle and a manufacturing method thereof, which is a modification and protection technology for the stainless steel medical small bone needle and belongs to the technical field of medical instruments. Background technique [0002] Metal biomedical materials, especially human implant materials, should meet three conditions: (1) superior biocompatibility; (2) excellent corrosion resistance; (3) high strength, high specific strength, low elasticity Good modulus, toughness, fatigue resistance, wear resistance, etc. Compared with other materials, medical metal materials have great advantages in terms of mechanical properties, and so far it is still the most widely used load-bearing implant material in clinical practice. [0003] At present, stainless steel among metal medical materials is widely used in clinical medicine, mainly including many fields such as orthopedics, orthoped...

Claims

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Application Information

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IPC IPC(8): A61B17/84A61L31/08
Inventor 张余沈培康李娜
Owner GUANGZHOU GENERAL HOSPITAL OF GUANGZHOU MILITARY COMMAND
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