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A kind of preparation method of medical biodegradable zinc alloy capillary tube material

A zinc alloy and capillary technology, which is applied in the field of preparation of medical biodegradable zinc alloy vascular stent capillary materials, can solve the problem of low plasticity materials being difficult to stretch, and achieves the effect of meeting the requirements of degradation rate and mechanical support

Active Publication Date: 2016-03-16
XIAN ADVANCED MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a composite processing method of swaging and rolling for the above-mentioned low-plasticity materials that are not easy to stretch and roll. Through this processing method, zinc alloy capillary tubes that meet medical requirements can be made. material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Take the as-cast zinc alloy bar (outer diameter 28mm×200mm), peel off the outer skin with a lathe, and turn it into a bar with an outer diameter of 27mm. After heat treatment first, the temperature of heat treatment is 340°C, the time is 12h, and it is cooled with the furnace;

[0018] (2) Heat the swaging die in the swaging machine to about 180°C, put the above-mentioned heat-treated bar for four passes of swaging. The first pass is forged to an outer diameter of 21mm, and the second pass is swaged from an outer diameter of 21mm to an outer diameter of 17mm. After this pass is completed, an annealing treatment is performed, and the third pass is swaged from an outer diameter of 17mm to an outer diameter of 14mm. , the fourth pass is swaged from an outer diameter of 14mm to an outer diameter of 12mm, and an annealing treatment is performed after the completion of this pass. The annealing temperature is 200°C and the time is 60min;

[0019] (3) Drill the swaged bar...

Embodiment 2

[0024] (1) Take the as-cast zinc alloy bar (outer diameter 26mm×200mm), peel off the outer skin with a lathe, and turn it into a bar with an outer diameter of 25mm. After heat treatment first, the heat treatment temperature is 340°C, the annealing time is 12h, and it is cooled with the furnace;

[0025] (2) Heat the swaging die in the swaging machine to about 180°C, put the above-mentioned annealed bar for four passes of swaging. The first pass is forged to an outer diameter of 20mm, and the second pass is swaged from an outer diameter of 20mm to an outer diameter of 17mm. After this pass is completed, an annealing treatment is performed, and the third pass is swaged from an outer diameter of 17mm to an outer diameter of 15mm. , the fourth pass is swaged from an outer diameter of 15mm to an outer diameter of 14mm, and an annealing treatment is performed after this pass is completed. The annealing temperature is 200°C and the time is 40min;

[0026] (3) Drill the swaged bar i...

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Abstract

The invention relates to a preparation method in the technical field of novel biological materials and particularly relates to a preparation method of a medical biodegradable zinc alloy intravascular stent capillary tube. The preparation method comprises the following steps: carrying out heat treatment on a casting-state zinc alloy phi25mm-phi28mm rod; carrying out a plurality of paths of rotary forging on the rod subjected to the heat treatment to phi12mm-phi18mm; then drilling the rod subjected to the rotary forging into a tube-shaped zinc alloy tube; then carrying out the plurality of paths of rotary forging on the zinc alloy tube to obtain a fine tube with the outer diameter of phi1.5mm-phi3.0mm and the wall thickness of phi0.12mm-phi0.16mm; and finally, drawing the fine tube according to the requirements to obtain the zinc alloy capillary fine tube. The medical biodegradable zinc alloy capillary fine tube prepared by the preparation method can be used for meeting a clinical biodegradable intravascular stent and meets the requirements of overall performance, degradation rate and mechanical support; the performance is good.

Description

technical field [0001] The invention relates to a preparation method in the technical field of biological new materials, in particular to a preparation method of a medical biodegradable zinc alloy vascular stent capillary tube. Background technique [0002] The medical biodegradable zinc alloy described in the present invention is a new material. This zinc alloy belongs to a low-plastic alloy material, and it is prone to cracking and breaking when traditional processing methods such as stretching and rolling are used. . This two-dimensional tensile stress is beneficial to the processing of alloys with good plasticity, but unfavorable to zinc alloys with low plasticity, and the drawn capillary tubes have poor comprehensive mechanical properties and poor surface quality, which cannot meet medical requirements. Contents of the invention [0003] The purpose of the present invention is to provide a composite processing method of swaging and rolling for the above-mentioned low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/16B21C37/06A61L31/02
Inventor 周功耀屈功奇宫海波
Owner XIAN ADVANCED MEDICAL TECH