High Surface Area Sealing Plug for Vascular Puncture Closure
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Solution Overview
Problem
Existing vascular puncture closure devices often fail to provide adequate sealing due to the limited size and surface area of standard rectangular-shaped collagen sponges, leading to potential bleeding and extended hemostasis times.
Innovation Solution
A tissue puncture closure device with a sealing plug that features a high surface area, achieved through various folding configurations such as S-folds, V-folds, U-folds, and cross-shaped designs, to provide better coverage and sealing at the puncture site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a standard rectangular-shaped collagen sponge is used, then the device can fit inside the carrier tube, but the surface area is limited and cannot provide adequate coverage at the puncture site
Solution Approach 1:
The collagen sponge is folded into a compact configuration that nests within the carrier tube during delivery, then unfolds at the deployment stage to achieve full surface area coverage at the puncture site
Solution Approach 2:
The sealing plug transitions from a two-dimensional folded state during delivery to a three-dimensional expanded state at deployment, increasing the effective surface area by utilizing spatial dimensionality changes
2Area of stationary object
If the collagen sponge size is increased to provide better coverage, then sealing effectiveness improves, but the sponge cannot fit inside the carrier tube
Solution Approach 1:
The sealing plug transitions from a compact folded state during delivery to an expanded state at deployment, allowing the volume to dynamically change based on the delivery versus deployment phase
Solution Approach 2:
The collagen sponge is divided into multiple folded sections that can be compacted for delivery but separate and expand to achieve full coverage area at the puncture site
Data Source
AI summary
An internal tissue puncture closure method and apparatus. The method and apparatus provide a folded sealing plug that provides more surface area than conventional plugs to more fully cover and seal an external situs of an internal tissue puncture. The folded sealing plug may have a weave pattern that tends to cause the sealing plug to corkscrew into the internal tissue puncture as it is compressed toward an anchor placed inside of the tissue puncture.