Injection molding processing method of degradable intravascular stent of flexible mold core structure
A vascular stent, injection molding technology, applied in stents, tubular articles, medical science and other directions, can solve the problems of damage and fracture, easy deformation, difficult demoulding, etc., to achieve the effect of easy demoulding, avoiding damage, and avoiding deformation
Active Publication Date: 2020-11-03
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In order to solve the above technical problems, the present invention provides a degradable vascular stent injection molding processing method with a flexible core structure, which solves the problems of difficult demoulding, easy deformation, damage and breakage during the injection molding process of the degradable vascular stent
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] The purpose of the present invention is to provide a degradable vascular stent injection molding processing method with a flexible core structure, which solves the problems of difficult demoulding, easy deformation, damage and fracture during the injection molding process of the degradable vascular stent.
[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be furthe...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an injection molding processing method of a degradable intravascular stent of a flexible mold core structure, and relates to the technical field of intravascular stent processing. The injection molding processing method comprises the following steps that 1, winding a flexible metal film on a metal rod, and applying inward bending stress to the flexible metal film; 2, fixingthe flexible metal film and the metal rod, and processing a complementary structure of the degradable intravascular stent on the surface of the flexible metal film; 3, assembling a machined matchingbody of the flexible metal film and the metal rod with a die sleeve of an injection molding machine, and carrying out injection molding machining; and 4, after injection molding is finished, taking down the matching body of the flexible metal film and the metal rod and the degradable intravascular stent formed on the surface of the flexible metal film through injection molding, performing cooling,detaching the metal rod and the flexible metal film, drawing out the metal rod, and taking down the flexible metal film to obtain the formed degradable intravascular stent. The method solves the problems that the degradable intravascular stent is difficult to demould, easy to deform and easy to damage and break in the injection molding process.
Description
technical field [0001] The invention relates to the technical field of vascular stent processing, in particular to an injection molding processing method of a degradable vascular stent with a flexible core structure. Background technique [0002] Vascular stent implantation is currently one of the most conventional and effective methods for treating cardiovascular blockage. The new generation of degradable vascular stent can be degraded and absorbed after it completes the expansion and dredging of narrow blood vessels, without any Side effects, and can reduce the chance of late complications such as in-stent restenosis and inflammation. The material of degradable vascular stents is usually a bioabsorbable high molecular polymer, which can be formed at one time by injection molding. At present, the stent injection molding process mainly integrates the design of the mold structure. Separate the mold from the holder. [0003] The existing technology can design the manufacture...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C33/48B29C33/50A61F2/82A61F2/91
CPCB29C45/0025B29C33/485B29C33/505A61F2/82A61F2/91A61F2210/00A61F2/915A61F2002/91566A61F2240/001A61F2210/0004A61F2210/0071B29L2031/7534B29C45/44B29C45/261B29C45/4471B29C45/03B29L2023/007
Inventor 仇天阳姜巍汪弘俊周天丰赵文祥颜培梁志强刘志兵解丽静焦黎王西彬
Owner BEIJING INSTITUTE OF TECHNOLOGYGY