Multiple Stent Delivery System Single Access Deployment
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Solution Overview
Problem
Current stent deployment methods require multiple access sites and mechanisms for balancing deployments at arterial bifurcations or venous confluences, complicating the process and limiting precision.
Innovation Solution
A multiple stent delivery system featuring a catheter with a first and second outer sheath configured to surround respective stents, allowing for simultaneous deployment of two stents through a single vascular access site using a single catheter, with the stents being offset along the catheter axis and deployable via retractable sheaths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a physician uses separate delivery mechanisms for each stent, then each stent can be deployed independently, but the procedural complexity increases and balancing deployments becomes difficult
Solution Approach 1:
The patent combines multiple stent delivery functions into a single integrated catheter system. The catheter includes multiple outer sheaths (first outer sheath, second outer sheath) that can independently surround and deliver different stents through a single access site, eliminating the need for separate delivery mechanisms and reducing procedural complexity while maintaining deployment independence
2Adaptability or versatility
If a physician accesses vasculature through multiple access sites, then stents can be deployed at different locations, but the procedural complexity and number of access sites increases
Solution Approach 1:
The catheter system is designed with multi-functionality to deliver multiple stents through a single vascular access site. The system can navigate to different disease locations and deploy stents at multiple positions along the vasculature, providing universal access capability without requiring multiple puncture sites, thereby simplifying the procedure while maintaining adaptability to various anatomical configurations
3Manufacturing precision
If stents are deployed sequentially using separate mechanisms, then placement can be adjusted, but time is lost switching between delivery mechanisms
Solution Approach 1:
The system performs preliminary action by pre-positioning multiple stents within the catheter system before entering the vasculature. The stents are loaded into respective outer sheaths in advance, allowing the physician to navigate the entire system to the target location and then deploy stents sequentially without removing or changing delivery mechanisms, thus maintaining placement precision while eliminating time loss associated with switching devices
Data Source
AI summary
A stent delivery system (100) includes a first outer sheath (111) configured to surround a first stent (110); and a second outer sheath (121) configured to surround a second stent (120).