Vascular Closure Plug with Ridges for Conforming to Vessel Shape
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Solution Overview
Problem
Larger punctures created by larger percutaneous sheaths are difficult to seal effectively with traditional vascular closure devices, as they struggle to conform to the increased vessel size and provide adequate hemostasis.
Innovation Solution
A vascular closure device featuring a plug member with ridges that can transition from an insertion configuration to a collapsed configuration, conforming to the vessel shape and sealing the puncture by distributing locking forces across the ridges and plug body, thereby improving hemostasis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If larger percutaneous sheaths are used to accommodate larger vascular devices, then the capacity to deliver larger vascular devices is improved, but the size of the resulting puncture increases making it harder to seal
Solution Approach 1:
The plug member transitions from an insertion configuration to a collapsed configuration, changing its shape dynamically to adapt to the vessel and seal the puncture. The plug member is compressed by the delivery assembly to conform to the vessel shape, enabling effective sealing of larger punctures created by larger sheaths.
Solution Approach 2:
The physical state and shape of the plug member are changed from an elongate insertion configuration to a collapsed configuration that conforms to the vessel. This parameter change allows the plug member to adapt to larger puncture sizes while maintaining sealing effectiveness.
2Device complexity
If traditional vascular closure devices are used on larger punctures, then the device structure remains simple, but the ability to conform to vessel shape and provide hemostasis deteriorates
Solution Approach 1:
The plug member includes a pair of ridges that project from the plug body, creating segmented contact points with the vessel. These ridges distribute locking forces and enhance conformity to the vessel shape while maintaining a relatively simple overall device structure.
Solution Approach 2:
The plug member is configured to collapse and conform to the curved shape of the vessel. The ridges and plug body work together to match the cylindrical geometry of the vessel, improving sealing effectiveness without requiring complex device architecture.
3Adaptability or versatility
If the plug member is made more compliant to conform to larger vessels, then the adaptability improves, but the structural strength to maintain seal may be compromised
Solution Approach 1:
The ridges create segmented contact zones that distribute mechanical loads across multiple points on the vessel wall. This segmentation allows the plug member to be compliant enough to conform to the vessel while maintaining sufficient structural strength through the distributed ridge structure.
Solution Approach 2:
The plug member combines a plug body with projecting ridges to create a composite structure that balances compliance for conformance with strength for seal maintenance. The integrated design allows different regions to serve different functions while working together as a unified sealing mechanism.
Data Source
AI summary
A vascular closure device includes a delivery assembly, an anchor member carried by the delivery assembly, and a suture attached to the anchoring member. A plug member can be disposed in the delivery assembly and attached to suture such that the plug member. The plug member includes a plug body, a pair of ridges that project from the plug body, and a select location disposed between the pair of ridges. The plug member configured to, in response to a force applied to the select location, transition from an insertion configuration, whereby the plug member is elongate along an insertion direction, into a collapsed configuration, whereby the plug member is collapsed along the insertion direction.