Multi-lumen segmented folding balloon catheter

CN122321315APending Publication Date: 2026-07-03HANGZHOU KAPANA MEDICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU KAPANA MEDICAL TECHNOLOGY CO LTD
Filing Date
2026-05-26
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

When dealing with irregularly shaped stenotic lesions, balloon catheters are prone to uneven force, which can cause banana-shaped deformation, resulting in insufficient adhesion between the balloon and the lesion tissue, affecting the dilation effect, and potentially causing surgical risks such as stent displacement and uneven dilation.

Method used

A multi-lumen segmented folding balloon catheter is designed, including a main dilation balloon, a proximal positioning balloon, and a distal positioning balloon. Each balloon is connected by an inner tube and has an independent balloon inflation cavity and a flexible memory rib. The flexible memory rib is made of nickel-titanium alloy and its phase change temperature is adapted to human body temperature to guide the balloon to expand uniformly and fold in a directional manner.

Benefits of technology

It achieves uniform adhesion between the balloon and the diseased tissue, prevents banana-shaped deformation, improves dilation effect, avoids stent displacement, reduces postoperative inflammation and restenosis risk, and enhances the balloon's anti-slip and anti-puncture capabilities.

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Abstract

This application discloses a multi-lumen segmented foldable balloon catheter, comprising: a main dilation balloon for radial dilation of the narrowed lesion site; a proximal positioning balloon, an independent balloon structure connected to the main dilation balloon via an inner tube; and a distal positioning balloon, also an independent balloon structure connected to the main dilation balloon via an inner tube. The inner tube contains independently functioning balloon filling cavities. The lumens of the main dilation balloon, proximal positioning balloon, and distal positioning balloon are respectively connected to their corresponding balloon filling cavities to achieve independent pressure control of the main dilation balloon, proximal positioning balloon, and distal positioning balloon. By providing independently functioning balloon filling cavities in the dilation balloon and positioning balloon, the inflation state of each balloon can be adjusted individually as needed, ensuring uniform adhesion between the balloon and the lesion tissue, preventing "banana deformation" due to irregular lesion shape during dilation, ensuring dilation effect, and avoiding stent displacement.
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