Diamond-Shaped Anchor Frame for Implantable Medical Devices
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Solution Overview
Problem
Existing implantable medical devices face challenges in securely anchoring within the body without causing embolization, thrombus formation, or tissue growth, which can lead to complications such as stroke.
Innovation Solution
The design of an anchor for implantable medical devices featuring a first and second frame component with diamond-shaped contact features, connected by wires forming an intermediate section, which can be curved inwardly to enhance tissue engagement and minimize prolapse, using a membrane to facilitate anchoring and reduce stress on the tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anchors are used to secure implantable medical devices, then the device is anchored in place, but embolization, thrombus formation, or tissue growth may occur leading to complications
Solution Approach 1:
The anchor is divided into multiple discrete contact features (diamond-shaped elements) distributed across the frame components, rather than using a single continuous anchoring structure. This segmentation allows localized tissue engagement while maintaining overall device stability and reducing the risk of complete embolization
Solution Approach 2:
The diamond-shaped contact features have specific geometric properties (apices and contact surfaces) optimized for local tissue interaction. The shape provides concentrated contact points for secure anchoring while the overall distributed pattern minimizes localized tissue damage and thrombus formation risk
2Stability of the object's composition
If the anchor frame components are rigid to maintain structural integrity, then the device remains stable, but tissue growth and stress concentration may occur
Solution Approach 1:
The diamond-shaped contact features incorporate curved surfaces and rounded apices rather than sharp angles. This curvature distributes mechanical stress more evenly across the tissue interface, reducing stress concentration points that could lead to tissue damage or abnormal growth while maintaining frame structural integrity
Solution Approach 2:
The anchor utilizes frame components with properties combining structural rigidity and tissue compatibility. The design integrates rigid structural elements with surface characteristics that minimize tissue stress, creating a composite structure that maintains integrity while reducing harmful tissue interactions
3Reliability
If the anchor uses complex frame structures to enhance anchoring, then anchoring security improves, but device complexity and retrieval difficulty increase
Solution Approach 1:
The complex anchoring function is achieved through multiple simple, identical diamond-shaped contact features rather than a single complex structure. Each contact feature is geometrically simple but collectively they provide robust anchoring, and the modular nature facilitates retrieval by allowing controlled manipulation of individual elements
4Strength
If the contact features have sharp edges for secure tissue engagement, then anchoring strength improves, but tissue damage and thrombus formation increase
Solution Approach 1:
The diamond-shaped contact features utilize curved surfaces and rounded apices instead of sharp edges. The curvature maintains effective tissue engagement through distributed pressure while eliminating stress concentration points that would cause tissue damage or initiate thrombus formation
Solution Approach 2:
The geometric parameters of the contact features (edge radius, apex curvature, surface angle) are optimized to balance engagement strength with tissue protection. By adjusting these parameters, the design achieves sufficient anchoring strength while minimizing tissue damage risk
Data Source
AI summary
Various aspects of the present disclosure are directed toward apparatuses, systems, and methods that include an anchoring implantable medical device configured to anchor an implantable medical device.