Modular Catheter System With Lock-Grip Handle
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Solution Overview
Problem
Current medical devices for treating atherosclerotic lesions and chronic total occlusions face challenges such as complex lesion morphology, calcification, and limited procedural success rates, requiring improved interventional devices that can be customized for patient-specific anatomies.
Innovation Solution
A mechanically enabled functionally integratable catheter system (FICS) that includes a support catheter, dilator, percutaneous transluminal angioplasty (PTA) catheter, and lock-grip handle, allowing clinical operators to selectively combine components to form various configurations for treating vascular and non-vascular conditions, including atherosclerotic lesions and chronic total occlusions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate medical devices are used to treat different aspects of atherosclerotic lesions and chronic total occlusions, then treatment versatility is improved, but device complexity and procedural time increase
Solution Approach 1:
The catheter system is divided into separate functional modules including a support catheter, dilator, PTA catheter, and lock-grip handle, each capable of independent operation. These segmented components can be selectively combined in different configurations to address various lesion types and procedural requirements, providing versatility while maintaining manageable complexity through modular design
Solution Approach 2:
The support catheter serves multiple functions: it acts as a guide catheter for navigation, a delivery platform for the dilator and PTA catheter, and a stabilization element during procedures. The lock-grip handle also performs multiple functions including securing the dilator, providing mechanical actuation, and serving as a control interface. This multi-functionality reduces the need for separate devices while maintaining treatment versatility
2Adaptability or versatility
If multiple separate medical devices are used to treat different aspects of atherosclerotic lesions and chronic total occlusions, then treatment versatility is improved, but procedural time increases
Solution Approach 1:
The dilator, PTA catheter, and lock-grip handle are merged into an integrated assembly that can be delivered and deployed as a unified system. The lock-grip handle mechanically couples these components, allowing simultaneous positioning and actuation. This merging eliminates the time required to separately introduce and coordinate multiple devices, while the modular nature allows quick reconfiguration for different treatment scenarios
3Device complexity
If fixed configurations of catheter systems are used, then device simplicity is maintained, but adaptability to patient-specific anatomies is reduced
Solution Approach 1:
The catheter system transitions from fixed configurations to dynamic reconfigurability. The lock-grip handle incorporates a mechanical locking mechanism that allows the operator to secure the dilator at specific positions along its shaft, enabling adjustment of the active element position. This dynamic positioning capability allows adaptation to various patient anatomies and lesion locations while maintaining operational simplicity through mechanical rather than electronic control
Data Source
AI summary
A catheter system can be selectively combined by a clinical operator to form at least two configurations selected from the group of a dilator configuration, a percutaneous transluminal angioplasty configuration, an LLS (lesion length selective) percutaneous transluminal angioplasty configuration, a CTO-dilator configuration, and a reentry-dilator configuration. A manifold is configured for fluid communication and is insertable into at least one support catheter. A lock-grip handle is configured for the at least two configuration and is configured to coaxially engage and seal with the at least one support catheter and to mechanically actuate the at least two functional components such that distal tips of the at least two functional components can be projected controllably in vivo through the distal end of the at least one support catheter.