System and apparatus to assist in precise stent positioning at the ostium of a blood vessel

A 360-degree compliant balloon integrated with a guide extension tube facilitates precise stent positioning at the ostium, addressing the challenges of existing technologies by enabling quick and accurate stent placement with reduced radiation exposure and procedural time.

WO2025221810A1 Publication Date: 2025-10-23FISCHELL TIM
4 Cites 0 Cited by

Patent Information

Application Number
PCT/US2025/024798
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-15
Filing Date
2025-04-15
Publication Date
2025-10-23

AI Technical Summary

Technical Problem

Existing stent placement technologies struggle with precise positioning at the ostium of a blood vessel, particularly at aortic take-off, due to the complexity of maintaining lumen access and blood flow, requiring multiple spacing/inflation elements and impractical sizing for different stent sizes and lengths, which complicates the procedure and exposes patients to excessive radiation and contrast media.

Method used

A 360-degree compliant balloon is integrated with a guide extension tube, allowing for precise stent positioning at the ostium, with a flexible and steerable ostial positioning catheter that includes a distal reinforced shaft and a hypotube for easy maneuverability, and a built-in stopcock for controlled inflation, enabling accurate stent deployment without interfering with the guide catheter.

Benefits of technology

The solution allows for quick and accurate stent placement within ±2 mm of the ostial plane, reducing procedural time and radiation exposure, and maintaining blood flow, while accommodating various stent sizes and lengths, thus enhancing treatment efficacy.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

Apparatuses and methods for quickly and accurately positioning a stent within the ostium of a blood vessel so that the entire circumference of the proximal stent edge is within the aorto-ostial landing zone (AOLZ). Any of these methods and apparatuses may include an ostial positioning catheter including an annular sealing balloon, a distal reinforced shaft, and a hypotube extending proximally from a longitudinal side of the distal reinforced shaft. These ostial positioning catheters may be independently operated with a guide catheter and a stent deployment catheter.
Need to check novelty before this filing date? Find Prior Art