Suture And Expandable Stent Anchoring For Tissue Apposition
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Solution Overview
Problem
Existing devices struggle to maintain tissue walls in close apposition during anastomosis procedures, leading to prolonged procedures and increased risk of infection due to guidewire instability and potential loss of access.
Innovation Solution
A system using a flexible elongate member with tissue-penetrating elements and anchoring elements, including a suture element to hold tissue walls together and a stent to create an anastomosis, facilitating precise placement and minimizing tissue trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a guidewire is used to enhance device exchange, then device exchange is facilitated, but the guidewire cannot maintain tissues in close apposition and may not remain in the desired position
Solution Approach 1:
The patent introduces a tissue anchoring system as an intermediary between the guidewire and the tissue walls. This system includes a needle that penetrates the tissue walls and delivers an anchoring element (expandable balloon or stent) that secures the tissue walls in apposition while the guidewire is exchanged. The anchoring element acts as a mediator that maintains tissue stability during the guidewire exchange process.
Solution Approach 2:
The patent applies preliminary action by first penetrating the tissue walls with a needle and deploying an anchoring element to secure the tissue walls in close apposition before performing the guidewire exchange. This preliminary anchoring ensures that the tissue walls remain stable and in the desired position throughout the subsequent device exchange procedures.
2Measurement precision
If multiple devices are used to locate and position at the target tissue, then precise positioning is achieved, but the procedure time increases
Solution Approach 1:
The patent combines multiple functions into a single integrated device. The needle serves both as a tissue penetration tool and as a delivery mechanism for the anchoring element. The anchoring element itself serves multiple purposes: it secures the tissue walls, maintains apposition, and provides a stable platform for subsequent device exchange. This consolidation reduces the number of separate devices and steps required.
Solution Approach 2:
The anchoring element is designed with multi-functionality, serving as both a tissue securing mechanism and a positioning reference for subsequent devices. The expandable balloon or stent can accommodate various device exchanges while maintaining tissue apposition, making it a universal solution for different anastomosis procedures.
3Ease of operation
If tissue walls are not maintained in close apposition, then device exchange is easier, but the risk of infection increases and anastomosis quality decreases
Solution Approach 1:
The anchoring element serves as an intermediary structure that maintains the protective barrier of close tissue apposition while allowing device exchange through its lumen. This mediator preserves the sealed configuration that prevents infection, even when devices need to be exchanged through the anastomosis site.
Data Source
AI summary
Devices, systems, and methods for drawing tissue walls together using a first tissue anchoring element and a second tissue anchoring element spaced apart from each other. The first tissue anchoring element is thinner than the second tissue anchoring element. The first tissue anchoring element may be a suture, optionally including a suture anchor. The second tissue anchoring element may be an expandable tissue anchoring element, such as a stent, expandable from a delivery configuration to a deployed configuration. The second tissue anchoring element may have a passage therethrough allowing passage of materials through the tissue walls, and creating an anastomosis therebetween.