5 comments
rachelr
rachelr

"Because of its flexible nature, the stent does not require the use of a balloon catheter needed by conventional stents to be delivered inside the artery to remove the blood clot formed that results in a heart attack."  I thought catheters were necessary to expand the stent within the vessel, rather than to remove blockage?

Arundhati Parmar
Arundhati Parmar

 @rachelr Yes you are right. I was explaining how a stent functions to remove a clot and not the catheter, although I see how the sentence can be taken that way. Sorry ...

rachelr
rachelr

 @Arundhati Parmar  @rachelr   The reason I was asking was mainly do you know what benefit the flexibility is supposed to give? Stents tackle vessel narrowing rather than clots - they compact enlarged areas of the vessel wall to widen the space available for blood flow.  The balloon doesn't only feed the stent to the target site, it also helps it to expand and push onto the vessel wall, so flexibility seems counterintuitive if it is self-expanding?

rachelr
rachelr

 @Arundhati Parmar Ok, so it expands to variable diameters in more complex vessels?  Ok, that makes sense.  Thanks!

Arundhati Parmar
Arundhati Parmar

 @rachelr Like the story mentions the flexibility allows the stent to expand on its own and provide better fit while more rigid, conventional stents leave gaps leading to malapposition that has significant risks from what I understand.

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