A very small diameter intravascular stent device which may be used to occlude or partially occlude an aneurysm in the human brain, the stent device includes a thin-walled skeletal cylindrical tube fonned of S-shaped, or sinusoidal, elements which, when compressed, nest tightly with each other....http://www.google.com.tw/patents/US6960228?utm_source=gb-gplus-share專利 US6960228 - Intravascular stent device
