Linkage Driven Compaction Device for Vascular Closure
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Solution Overview
Problem
Current vascular closure tools often have issues with providing sufficient columnar tamping strength for sealing plugs, leading to potential prolonged bleeding and require large, uncomfortable handles to accommodate tamping mechanisms, which can result in misplacement of the sealing plug.
Innovation Solution
An automatic compaction mechanism using a system of linkages that can extend and provide tamping strength, allowing for compact handle design while ensuring proper seating of the sealing plug, comprising a series of interconnected linkages that expand horizontally and collapse vertically to drive a compaction device, such as a tubular member, into the puncture tract.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a linear rack is used for automatic tamping, then sufficient columnar tamping strength is provided, but the handle becomes long and large
Solution Approach 1:
The scissor linkage mechanism allows the tamping mechanism to be nested within a compact handle structure. The linkages fold together when not in use, enabling the mechanism to occupy minimal space within the handle while still providing full tamping stroke and columnar strength when deployed.
Solution Approach 2:
The scissor linkage mechanism transforms the linear motion requirement into a rotational folding motion. By using interconnected linkages that pivot at joints, the mechanism achieves linear tamping motion through rotational movement, allowing compact storage in the handle while maintaining full extension capability for tamping.
2Length of moving object
If a coilable rack is used for automatic tamping, then the handle becomes compact, but the columnar tamping strength is reduced
Solution Approach 1:
The scissor linkage mechanism allows the tamping mechanism to be nested within a compact handle structure. The linkages fold together when not in use, enabling the mechanism to occupy minimal space within the handle while still providing full tamping stroke and columnar strength when deployed.
Solution Approach 2:
The scissor linkage mechanism transitions from a static compact form to a dynamic extended form during operation. The linkages are designed to be rigid when extended, providing the necessary columnar strength, while being able to fold compactly when retraction is required, thus achieving both compactness and strength.
3Strength
If a large handle is used to accommodate the tamping mechanism, then sufficient tamping strength is achieved, but user comfort is reduced
Solution Approach 1:
The scissor linkage mechanism allows the tamping mechanism to be nested within a compact handle structure. The linkages fold together when not in use, enabling the mechanism to occupy minimal space within the handle while still providing full tamping stroke and columnar strength when deployed.
Solution Approach 2:
The scissor linkage mechanism transforms the linear motion requirement into a rotational folding motion. By using interconnected linkages that pivot at joints, the mechanism achieves linear tamping motion through rotational movement, allowing compact storage in the handle while maintaining full extension capability for tamping.
4Length of moving object
If the compaction mechanism is made compact, then handle size is reduced, but the extension length for tamping may be insufficient
Solution Approach 1:
The scissor linkage mechanism transitions from a static compact form to a dynamic extended form during operation. The linkages are designed to be rigid when extended, providing the necessary columnar strength, while being able to fold compactly when retraction is required, thus achieving both compactness and strength.
Solution Approach 2:
The scissor linkage mechanism transforms the linear motion requirement into a rotational folding motion. By using interconnected linkages that pivot at joints, the mechanism achieves linear tamping motion through rotational movement, allowing compact storage in the handle while maintaining full extension capability for tamping.
Data Source
AI summary
Methods and apparatus are disclosed for sealing a puncture or incision formed percutaneously in tissue separating two internal portions of the body of a living being with an anchor, a sealing plug and a filament connecting the anchor and sealing plug. The methods and apparatus provide for a compaction mechanism that is expandable and tamps the sealing plug into place.