I want to develop a material for a cardiovascular stent application. Therefore, I want to know about the pressure which a stent will bear in the artery.
In balloon mounted stents the nominal presdure of deployment in 8 bar. However in arteriosckerotic plaque often you need 10-14 bar to fully open the stent but the better solution is to predilatate first with the balloon only. If there is higher pressure needed the high pressure balloon is used in prelilataion up to 25 bar. Self expanable stents have lower radial force which deoends on the stent type (laser cut/woven) and naterial NiTi CrMo or steel- that data you will find in the documentation of the specific stent
Sorry I was using phone - so many mistakes..
In balloon mounted stents the nominal presdure of deployment in 8 bar. However in arteriosclerotic plaque, very often you need 10-14 bar to fully open the stent but the better solution is to predilatate first with the balloon only. If there is higher pressure needed the high pressure balloon is used in predilatation up to 25 bar. Self expanable stents have lower radial force which depends on the stent type (laser cut/woven) and material NiTi CrMo or steel- that data you will find in the documentation of the specific stent. Below an article that can help:
Article Understanding the requirements of self-expandable stents for...
The pressure at which stent is deployed has nothing to do with blood pressure. The nominal pressure for most of the stents as has been pointed out is 8 to 12 bar. But most stents require post dilatation with non compliant balloon at 18 to 20 bar. Some lesions rarely require post dilatation at even higher pressures . If the lesion and vascular bed are properly prepared, very high pressure post dilatation can be avoided, as it carries risk of vascular rupture.
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