A Study for Crossability of Spherical Tip Versus Regular Noncompliant Balloon in Tortuous Coronary Artery Postdilatation

The tortuous lesion increases the difficulty of coronary intervention treatment, especially when there is still a large angle after stent implantation. The ability of the non compliant balloon to pass through the stent segment becomes the key to complete the operation.

The spherical tip noncompliant balloon is an original design by our center, which reduces its resistance to stent struts through the spherical structure of balloon tip, and is committed to increasing the crossability of the balloon.This study is a multicenter, randomized, single blind design with the aim of truly revealing the differences in parameters such as success rate of crossing, times of attemptation, and time consumption between the novel spherical tip and regular non compliant balloon.

Inclusion criteria

• Over 18 years old, regardless of gender
• Patients with indications for coronary artery stent implantation
• The vascular curvature angle<120 ° after coronary artery stent implantation
• Noncompliant balloon postdilation is required
• Voluntarily participate and sign an informed consent form

Exclusion criteria

• Pregnant women or patients who are attempting to get pregnant
• Patients participating in clinical trials of other drugs or medical devices
• Patients deemed unsuitable by the researchers to participate in this clinical trial