Hi,
Is there any way to know how much radial stiffness the stent should have in order to open the occluded vessel.
Dear Rayudu Nithin Manohar,
Values for radial stiffness can be estimated using advanced computer programs, but the answer is not ease and it depends of other parameters.
Rayudu,
I understand your question as how much radial stiffness a stent should have in order to keep a previously occluded vessel open. The expandable balloon in which the stent is mounted is the responsible of compressing the narrowed vessel wall, and the subsequent revascularization ("open") of the stenosed vessel.
A typical value for the arterial blood pressure is 100 mmHg. We can assume that in a basal situation the blood pressure is in equilibrium with the pressure that the artery wall exerts to the blood. This 100 mmHg should be an upper limit of the radial pressure that a stent has to endure.
The precise value of radial stiffness you will get depends on the maximum deformation you are willing to tolerate.
I hope this helps... good luck!
PS: What is the radial stiffness definition that are you using?
I am not sure, if you are eluding to the pressure used to deploy the stent. If this is what you are looking for, as an example for Xience stent we use more commonly between the nominal pressure to burst pressure that is listed as 10 to 18 atmospheres. The nominal and burst pressureso are listed on the packet insert. Hope this helps
- Badges
- Science topic
- Similar topics
- Medicine
- Disease
- Infectious Diseases