Analysis of performance materials and application

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Analysis of performance materials and application prospects of medical catheter

with the development of catheter diagnosis and treatment technology, the clinical application of medical catheter is developing day by day, and the demand is also increasing. According to incomplete statistics, at present, there are more than 120 catheters in 6 categories used in urology alone in the world, and more than 100 catheters are used for the development of new connecting industries for the diagnosis and treatment of cardiovascular, cerebrovascular, tumor and other diseases

introduction to the performance and materials of medical catheter

there are many kinds of medical catheter materials, and there are dozens of organic polymer materials used in medical plastic products, which are used in products with different uses with their different properties

biomedical materials refer to a kind of materials with special properties and functions, which are used in the medical and health care fields such as human organs, surgical repair, physiotherapy rehabilitation, diagnosis, examination and treatment of diseases without adverse effects on human tissues and blood

smart energy began to develop high nickel 811 battery products in 2014. Medical catheter plastic is a synthetic polymer material with certain biocompatibility. From the history of catheter manufacturing, almost all materials that can be used to make tubular products have been used. These materials include silicone rubber, polyurethane and its block copolymers, polytetrafluoroethylene, polyethylene, polypropylene, polyvinyl chloride, polymethylmethacrylate, polyurethane, polyethylene terephthalate, nylon, ABS and polycarbonate

Table 1 and table 2 show the characteristics of the catheter and its requirements for materials. Table 2 lists the types, application parts, retention time and materials of the catheter

TABLE-1 basic characteristics of catheter and requirements for materials

table-2 types of catheter and materials used

application prospect of precision medical catheter

application prospect of medical catheter. The annual sales of various catheters in the world have reached billions of dollars, and the number of medical catheters used in the treatment of coronary heart disease in the United States alone has reached hundreds of thousands, worth hundreds of millions of dollars. This is due to the planned large-scale inspection of ethylene cracking devices in Japan. In China, with the joint efforts of industry technology and R & D personnel, interventional therapy and other treatment technologies using catheters have been popularized to most of the tertiary hospitals. The demand for medical catheters is increasing, but most of them use imported catheters

compared with foreign developed countries, the development of medical catheters in China is relatively backward, especially in terms of high-tech interventional catheters. According to incomplete statistics, the annual import value of medical catheters in China now exceeds 150million US dollars. Imported catheters are mainly high-precision interventional catheters. Due to the dependence on imports, the development of interventional medicine in China has been greatly restricted, and the high price of imported products is also unbearable for most people

main features of precision medical catheter

the main features of precision medical catheter are: small size, complex shape, high geometric accuracy requirements, high health indicators, high biochemical stability

the main part of the conduit is the pipe, which requires that the internal and external surfaces of the pipe are smooth, flat, precise and stable. The diameter of the conduit is generally 0.5 mm to several millimeters, and the allowable diameter deviation is generally less than 5%

while using ordinary plastic pipe production equipment to produce plastic pipes, the diameter deviation of the products is as high as 20%~30%, which cannot meet the production requirements of precision medical catheter

production process of precision medical catheter

the tube part of precision medical catheter is produced by extrusion molding, and the accessories are mainly produced by injection molding

the production process of the pipe part is as follows: according to the geometric size and material of the conduit, set reasonable process parameters, including raw material formula, raw material drying conditions, extrusion temperature, screw speed, temperature and flow of cooling medium, etc

pipes with multi-layer pipe wall materials are produced by one-time coextrusion or two-time coextrusion composite process. The post-treatment of pipes depends on the requirements of the produced pipes. For pipes such as central venous catheter, it is also necessary to co extrude identification lines on the catheter or spray scales on the surface of the catheter

medical catheter has both opportunities and challenges.

the continuous development of medical science and technology promotes the accuracy of patient diagnosis and treatment, and brings less and less pain to patients

interventional catheter has gradually become the mainstream product in the medical catheter (intubation) market and the goal of various enterprises to compete for research, development and production due to the increased market demand, fine processing, high technical content and high added value

however, compared with foreign large-scale multinational enterprises, domestic enterprises are relatively backward in the R & D and production of high-tech interventional catheters. Many products still need to be imported from abroad, and the market share is mainly shared by foreign-funded enterprises. For example, China implements more than 100000 cardiovascular stent implantation operations every year, and expandable air bags and cardiovascular interventional plastic catheters must be used for such operations. However, this interventional catheter product is rarely produced in China, and most of it is imported from abroad

in view of this, if China's medical catheter (intubation) products are to break the existing pattern of large quantities and low returns, enterprises need to increase investment and develop high-end medical catheter (intubation) products urgently needed in domestic and foreign markets. Otherwise, with the rapid rise of the processing industry of medical catheter (intubation) products in Vietnam, Thailand, Malaysia and other emerging industrial countries in Southeast Asia, it will pose a threat to the export of medical catheter (intubation) products in China in the future

it will be more and more difficult to exchange foreign exchange only by exporting a large number of medical catheter (intubation) products. Only by making up their minds to follow the mode of "technological innovation" can Chinese enterprises improve the competitiveness of product exports and promote the development of China's medical catheter (intubation) industry

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