Cutting Balloon Catheter Blade Attachment via Joining Member
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Solution Overview
Problem
Current angioplasty balloons face challenges in effectively treating hardened or calcified lesions due to re-stenosis and trauma to healthy tissue, necessitating the development of cutting angioplasty balloons with improved methods for attaching cutting blades to enhance treatment efficacy.
Innovation Solution
The design includes a balloon catheter with one or more cutting members coupled to the balloon, utilizing a joining member to securely attach the cutting blades, which can be made from materials like stainless steel or iron-cobalt-nickel alloys, and manufactured using methods involving adhesives, thermal bonding, or solvation processes to ensure secure and flexible attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cutting blades are attached directly to the balloon, then the cutting function is achieved, but the attachment reliability is insufficient and the blades may detach during operation
Solution Approach 1:
A joining member is introduced as an intermediary component between the cutting blade and the balloon. This joining member includes a proximal portion that attaches to the balloon and a distal portion that secures the cutting blade, providing reliable attachment while maintaining structural simplicity through modular design
2Strength
If the cutting blade is made from rigid materials like stainless steel or iron-cobalt-nickel alloys, then the cutting effectiveness is improved, but the flexibility and adaptability to different lesion types are reduced
Solution Approach 1:
The cutting blade is designed with dynamic properties, allowing it to be rigid during the cutting phase to effectively cut hardened lesions, and then flexible during the inflation phase to conform to the balloon's expansion. This dynamic behavior enables the blade to adapt to different lesion types and patient anatomies while maintaining cutting effectiveness
3Productivity
If traditional angioplasty balloons are used without cutting members, then the procedure is simpler, but the ability to treat hardened or calcified lesions is insufficient
Solution Approach 1:
The cutting blade functionality is merged with the existing balloon catheter structure. The joining member integrates the cutting blade attachment to the balloon in a way that maintains compatibility with standard angioplasty procedures while adding the cutting capability to effectively treat hardened or calcified lesions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cutting balloon catheter effectively reduces re-stenosis and trauma by cutting through hardened lesions while minimizing damage to healthy tissue, with the secure attachment of cutting members enhancing the balloon's ability to expand and treat occlusions within blood vessels.
Implementation Method 1
manufactured using methods involving adhesives, thermal bonding, or solvation processes to ensure secure and flexible attachment
Implementation Method 2
manufactured using methods involving adhesives, thermal bonding, or solvation processes to ensure secure and flexible attachment
Implementation Method 3
manufactured using methods involving adhesives, thermal bonding, or solvation processes to ensure secure and flexible attachment
Data Source
AI summary
A cutting balloon catheter and methods for making and using the same. The cutting balloon catheter may include a catheter shaft having a balloon coupled thereto. One or more cutting members or blades may be coupled to the balloon. Manufacturing the cutting balloon catheter may include partially submerging or embedding a cutting member within a joining member and attaching the joining member to a balloon. The cutting member may include one or more slots along its base that can interlock with the joining member.