Angioplasty Balloon With Multiple Cavities for Cutting and Refolding
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Solution Overview
Problem
Current angioplasty balloons face challenges with re-stenosis and trauma to healthy tissue during balloon removal, particularly when dealing with hardened or calcified lesions, and struggle with refolding to minimize contact with cutting edges.
Innovation Solution
The development of angioplasty balloon catheters with integrated cutting members and multiple channels or chambers that reduce balloon elongation and enhance refolding capabilities, allowing for more precise inflation, improved cutting efficiency, and safer removal by minimizing contact with healthy tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a cutting blade is added to the angioplasty balloon to reduce re-stenosis and treat calcified lesions, then cutting efficiency and treatment effectiveness are improved, but the risk of trauma to healthy tissue during balloon removal increases due to the cutting edge being disposed at a large profile region
Solution Approach 1:
The balloon is designed with dynamic profile characteristics that allow it to transition between a large profile configuration during inflation (for effective cutting) and a small profile configuration during deflation (for safe removal). The cutting blade remains effective during the inflated state while minimizing trauma during the deflated removal phase.
Solution Approach 2:
The cutting action is performed preliminarily during the inflation phase before balloon removal. By cutting the calcified lesion and reducing re-stenosis risk during the inflated state, the cutting blade's harmful potential is utilized beneficially before deflation, preventing the need for repeated interventions and reducing overall trauma.
2Productivity
If the balloon is inflated to expand hardened or calcified lesions, then treatment effectiveness is improved, but the balloon may not be able to expand certain hardened lesions with typical design
Solution Approach 1:
The balloon incorporates a cutting blade made of rigid, sharp material (such as a laser-cut blade or diamond-coated edge) coupled to the balloon surface. This composite structure combines the flexibility of the balloon with the cutting capability of the rigid blade, enabling effective treatment of hardened and calcified lesions that cannot be expanded by typical balloons alone.
Solution Approach 2:
The balloon surface is segmented to include a discrete cutting blade portion that can be selectively deployed. The blade may be positioned at specific locations on the balloon surface, allowing concentrated cutting action at targeted areas of calcified lesions while the rest of the balloon maintains its expansion function.
3Strength
If the balloon maintains a relatively large profile when deflated, then structural integrity is maintained, but the balloon tends to maintain a large profile making removal difficult and increasing contact with healthy tissue
Solution Approach 1:
The balloon exhibits dynamic profile characteristics that allow it to transition between a large profile configuration during inflation (for effective cutting) and a small profile configuration during deflation (for safe removal). The cutting blade remains effective during the inflated state while minimizing trauma during the deflated removal phase.
Solution Approach 2:
The balloon utilizes flexible material properties that enable it to collapse and fold into a compact configuration upon deflation. The thin film structure allows the balloon to conform to the catheter shaft during removal, reducing the profile and minimizing contact with healthy tissue while maintaining structural integrity during the inflation phase.
Data Source
AI summary
An angioplasty balloon catheter and method of making and using the same. The balloon catheter may include a catheter shaft and a balloon coupled to the shaft. The balloon may include one or more cutting edges or member and may include a plurality of chambers defined therein.