Mold for preparing cardiovascular stents

Abstract

The invention discloses a mold for preparing cardiovascular stents. The mold for preparing the cardiovascular stents is characterized in that the mold for preparing the cardiovascular stents comprisesa first hollow YG8 hard alloy pipe (1), a second hollow YG8 hard alloy pipe (2), a third hollow YG8 hard alloy pipe (3) and a base (4), the first hollow YG8 hard alloy pipe (1) is located in the second hollow YG8 hard alloy pipe (2), and the second hollow YG8 hard alloy pipe (2) is located in the third hollow YG8 hard alloy pipe (3); and the first hollow YG8 hard alloy pipe (1), the second hollowYG8 hard alloy pipe (2) and the third hollow YG8 hard alloy pipe (3) are all arranged on the base (4), a chromium layer is plated in a mold hole of the mold, and the thickness of the chromium layer is 0.03-0.04 mm. The mold for preparing the cardiovascular stents is ingenious and concise in structure, a produced product is high in size accuracy and good in surface quality, the service life of themold is long, the cardiovascular stents each of a three-layer structure can be prepared, and the practicability is high.

Description

technical field [0001] The invention relates to the field of biomedicine, in particular to a mold for preparing a cardiovascular stent. Background technique [0002] The aorta is the largest blood vessel in the human body. The blood reaches the tissues and organs of the whole body through the aorta and its branches, providing oxygen and various nutrients that people need for life, work and study. The human blood vessel structure consists of three layers, namely intima, media and adventitia. Each layer is made up of different cells. An ideal vascular stent should have a hierarchical structure similar to that of human blood vessels, and its inner surface should have strong adhesion to vascular endothelial cells to form a dense endothelial cell layer to prevent thrombus formation and coagulation. In recent years, some researchers have tried to prepare tubular vascular tissue engineering scaffolds with multi-layer structure through different methods, but at present, the prepar...

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Problems solved by technology

In recent years, some researchers have been trying to prepare tubular vascular tissue engineering scaffolds with multilayer structure through different methods, but at present, the preparation process of vascular scaffolds mainly undergoes silk winding, photochemical etching and laser cutting. Although they play different roles in different stages, they all have defects that cannot be ignored. As an important method for mass production of complex-shaped parts, injection molding can ensure the dimensional accuracy and surface quality of vascular stents and shorten the manufacturing process. Period, reduce cost, this case comes from this

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