[Research for the test method of polypropylene fiber liquid filtration membrane particles shedding].

Through five experiments, such as "Circle", "square", "side that does not shake", "burning edge", "filter", this paper discussed the effect of different experimental methods of polypropylene fiber liquid filtration membrane particles shedding. The results show that: the particles falling off the edge of the polypropylene fiber Double-sided liquid filtration membrane are very important and must be considered off the evaluation of particle pollution.

[Pay attention to physical test and drafting product standards of the centrifuge apparatus].

Compare and analyze the standards related to centrifuge apparatus and make corresponding suggestions in allusion to the problems existed in the test method and physical performance during product standard drafting process.

[Comparative test on puncture coring of two different needles used with the implantable drug-supplying device].

A comparison test on the number of puncture coring is conducted using the normal needle and the Huber needle in the injection area of the implantable drug-supplying device separately. The result indicates that the number of coring using the Huber needle is much less than that using the normal needle during the puncturing. So it is suggested to popularize the Huber needle in the drug transfusion of the implantable drug-supplying device.

[Precautions of physical performance requirements and test methods during product standard drafting process of medical devices].

The major idea of this article is to discuss standardization and normalization for the product standard of medical devices. Analyze the problem related to the physical performance requirements and test methods during product standard drafting process and make corresponding suggestions.

[An indispensable assistant for the vascular stent designing and testing: the finite element analysis method].

This article reviews the recent progress of the finite element analysis (FEA) researches focusing on various expansion types, fatigue durability and the flexibility of the stents.