Compliant vs noncompliant balloon catheters

Compliant vs noncompliant balloon catheters Compliant balloon will increase in diameter as the pressure in the indeflator increases, as the name implies. They are made of polyurethane or silicone and can be inflated up to several times the nominal size. Compliant balloon is used when there is a need for the expanded balloon to fully conform to the vessel lumen or occlude it. On the other hand, noncompliant balloons are high pressure balloons made of polyester or nylon. They can exert high pressure to expand up to a specific diameter, but not significantly beyond that. They can be used to crack calcified lesions and expand stents. Then there is the concept of semi-compliant balloons, which are typically used for predilatation of lesions prior to stent implantation. While the increase in diameter of a noncompliant balloon is only up to 110% of the nominal size, increase in diameter of semi-compliant balloon can be up to about 130% of the nominal size. This is in sharp contrast to the maximum diameter of a compliant balloon which can increase even 800%! An early study evaluated over thousand PTCA procedures using noncompliant balloons made of polyethylene terephthalate, semi-compliant balloons made of polyethylene and compliant balloons made of polyolefin copolymer. In that study, acute occlusion, myocardial infarction, emergency bypass surgery and death were low and unaffected by balloon material [1]. A study of 104 patients in 2020 compared predilatation using noncompliant bal...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Angiography and Interventions Coronary Interventions Source Type: blogs