3D Occlusion Disc Structure for Stable Vascular Apposition

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Solution Overview

Problem

Existing occlusion devices with two-dimensional discs risk partial slippage into vascular abnormalities, leading to stagnant blood flow and increased risk of device-related thrombosis (DRT).

Innovation Solution

A medical device with a three-dimensional disc design providing increased depth and material apposition against tissue, ensuring a smooth transition and minimizing stagnant blood flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a two-dimensional disc design is used, then the device structure is simple and easy to manufacture, but the disc may slip into the vascular abnormality causing stagnant blood flow

Engineering Contradiction:

Improvedisc structure simplicityVSAvoiddisc position stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent transitions from a two-dimensional disc design to a three-dimensional disc design by adding depth in the radial direction. This dimensional change allows the disc to achieve better apposition against the tissue walls surrounding the vascular abnormality, preventing slippage while maintaining manufacturability through techniques like radial expansion or self-expanding frames.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If a three-dimensional disc design is used, then blood flow uniformity is improved and DRT risk is reduced, but the device structure becomes more complex

Engineering Contradiction:

Improveblood flow uniformityVSAvoiddisc structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The three-dimensional disc is constructed using a segmented approach with a frame structure that can be radially expanded or self-expanding. The disc comprises multiple components including a proximal surface, distal surface, and connecting framework, allowing complex geometry to be achieved through assembly of simpler elements rather than monolithic manufacturing.

Inventive Principle:

Principle #1Segmentation

3Reliability

If increased disc depth is used, then material apposition against tissue is improved, but the device size increases

Engineering Contradiction:

Improvematerial appositionVSAvoiddisc volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The disc employs dynamic characteristics through radial expandability or self-expanding mechanisms. The device is delivered in a compressed state with reduced volume, then expanded at the target site to achieve the optimal three-dimensional shape and depth for tissue apposition. This allows the device to achieve large apposition depth without permanently occupying large vascular space.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260007396A1Devices and methods for the treatment of vascular abnormalities

Publication Date: 2026.01.08 ST JUDE MEDICAL CARDILOGY DIV INC

AI summary

Described herein is a medical device for treating a target site. The medical device includes a proximal end including a disc and a distal end including a lobe. The disc and lobe are connected by a connecting member. The disc includes a proximal surface, a distal surface, and a central surface extending between and connecting the proximal surface and distal surface, wherein the central surface separates the proximal surface from the distal surface by a predetermined depth distance.