Using of Lawnest,an intravascular snare in retrograde percutaneous coronary intervention for chronic total occlusion:a case report
10.3969/j.issn.1004-8812.2025.11.009
- VernacularTitle:Lawnest血管内抓捕器用于慢性完全闭塞病变的逆向介入治疗1例
- Author:
Ying-kai LI
1
;
Song-yuan HE
1
;
Zi-chao CHENG
1
;
Hong-yu PENG
1
Author Information
1. 首都医科大学附属北京安贞医院冠心病中心,北京 100029
- Publication Type:Journal Article
- Keywords:
Coronary chronic total occlusion;
Percutaneous coronary intervention;
Retrograde approach
- From:
Chinese Journal of Interventional Cardiology
2025;33(11):657-660
- CountryChina
- Language:Chinese
-
Abstract:
Coronary chronic total occlusion(CTO)remains a significant challenge in the field of interventional therapy for coronary artery disease.With advancements in interventional techniques,particularly retrograde approaches,the success rate of CTO interventions has improved.The key steps of retrograde intervention include traversing collateral channels with the retrograde guidewire,wiring the occlusion segment,and establishing antegrade access.In this case,the patient had a heavily calcified occlusion at the left circumflex artery(LCX)ostium jailed by the prior stent implanted in the left main and anterior descending arteries,making it difficult to establish antegrade access using conventional methods after retrograde guidewire crossing.The procedure was successfully completed by employing a domestically developed intravascular snare system combined with a pre-assembled extension catheter technique to capture the retrograde guidewire and establish antegrade access,followed by stent implantation at the LCX ostium.This innovative approach provides a new strategy for complex CTO retrograde interventions,particularly in cases where retrograde guidewire entry into the antegrade guiding catheter is challenging.
