[Finite element analysis and fatigue tests for nitinol vascular stents].

This essay is to make brief comments on the Nitinol vascular stents fatigue lifetime requirements, finite element analysis and fatigue lifetime tests etc.

[Factors influencing the temperature-sensing accuracy of ablation catheters].

Factors influencing the temperature-sensing accuracy of an ablation catheter are analyzed, in this paper, from the two aspects of the thermocouple temperature sensor, which are the TC length and the TC hole's diameter of the ablation electrode. Meanwhile, differences between products from different companies are given too.

[Development of an electrolytically-detachable microcoil for intracranial aneurysms].

An electrolytically-detachable microcoil is introduced here in the paper. The testing results indicate that, the microcoils have stable mechanical properties, clear radiographic images and fine insulation performance. Their detaching time varies from 30s to 200s when voltage changes from 2V to 5V.

[Nitinol alloy's applications in cerebral interventional devices].

With the development of cerebral interventional medical devices, Nitinol alloy has been widely used in clinical fields as a good biomaterial. This essay is to make brief comments on Nitinol alloy's present development, its material characteristics, medical basic researches, and applications in cerebral interventional devices.

[Research progresses in endovascular stent biomaterials].

This essay is to make brief comments on the physical characteristics, biocompatibility, corrosion resistance, clinical information, existent problems of endovascular stent biomaterials and the developing tendency in future.