Tissue Anchors With Everted Tips For Secure Medical Device Positioning
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Solution Overview
Problem
Existing medical devices face challenges in maintaining proper positioning within the anatomy due to lack of effective anchoring solutions that minimize tissue damage and promote secure engagement.
Innovation Solution
The development of anchors with controlled depth penetration and everted tips that encourage tissue growth, integrated with a delivery system allowing for precise deployment and integration with medical devices, utilizing biocompatible materials like Nitinol and porous biomaterials to enhance tissue integration and reduce damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anchors penetrate tissue to secure medical devices, then secure anchoring is achieved, but tissue damage increases
Solution Approach 1:
The patent changes the geometric parameters of the anchor, specifically creating controlled penetration depth and everted tips that curve back into the tissue. This parameter modification allows the anchor to secure the medical device while minimizing the extent of tissue damage by limiting penetration to controlled depths and redirecting tip forces.
Solution Approach 2:
The anchor is segmented into distinct functional zones: a penetration section for initial tissue entry, a body section for structural support, and everted tip sections for securing. This segmentation allows each portion to perform its specific function optimally - penetrating efficiently while the everted tips provide secure retention with minimized tissue disruption.
2Manufacturing precision
If anchors are integrated with delivery systems for precise deployment, then deployment precision is improved, but device complexity increases
Solution Approach 1:
The delivery system and anchor are merged into an integrated assembly where the anchor is pre-loaded within the delivery catheter. The delivery system incorporates features such as push rods or balloons that are combined with the anchor structure, allowing precise deployment through a single integrated device rather than separate components.
Solution Approach 2:
The anchor design incorporates self-deployment features where the anchor automatically transitions from a compressed delivery state to an expanded deployed state upon exiting the delivery catheter. The elastic memory of the anchor material provides self-service deployment without requiring complex external actuation mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The anchors provide secure anchoring with controlled penetration, reducing tissue damage and promoting tissue growth, thereby maintaining the position of medical devices effectively within the anatomy.
Implementation Method 1
utilizing biocompatible materials like Nitinol
Implementation Method 2
porous biomaterials to enhance tissue integration
Data Source
Figure 1A~1B
Figure 2A~2E
Figure 3A~4B
AI summary
The present disclosure describes a system and method for securing medical devices to the tissue of a patient using one or more anchors. Anchors can be independent from or integral to the medical device deployed within the patient. Such anchors are configured to engage and maintain contact with the tissue using a tissue-penetrating point and bendable shaft.