Endovascular method for bypassing an occluded vessel

CN122249251APending Publication Date: 2026-06-19HEIDI CONSULTING LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEIDI CONSULTING LLC
Filing Date
2024-07-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing antegrade re-entry into the true lumen (ADR) technique cannot reliably penetrate occluded vessels, leading to subintimal or extraplaque hematoma, collateral vessel occlusion, and reduced flow grade during thrombolytic therapy for myocardial infarction. Furthermore, restenosis is common after stent placement.

Method used

By advancing the distal end of the guidewire into the subendothelial space, a bend is formed. An inflatable balloon catheter is used to create an opening between the subendothelial space and the true lumen. The guidewire passes through the opening into the distal true lumen, and multiple balloon inflations and deflations are performed as needed to ensure accurate positioning and safe passage of the guidewire.

Benefits of technology

It improves the predictability of guidewire crossing the occlusion, reduces subintimal hematoma and collateral vessel occlusion, ensures the patency of collateral vessels, reduces the risk of restenosis, and achieves more efficient blood flow restoration.

✦ Generated by Eureka AI based on patent content.

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Abstract

An endovascular method for bypassing an occlusion is disclosed. The distal end (214) of a guidewire (202) can be advanced through a microcatheter (204) and into the subintimal space (106) of a patient's artery, wherein a bend (212) can be formed at the distal end of the guidewire, and the guidewire with the bend at its distal end can be advanced to the occlusion. An inflatable balloon catheter (206) can be placed on the advanced guidewire and distal to the occlusion, and the inflatable balloon catheter can be inflated to form at least one opening (136) in the layer separating the subintimal space from the true lumen, through which the guidewire can pass.
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