Reversible Tissue Lock Mechanism With Catheter Repositioning
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Solution Overview
Problem
Conventional lock delivery systems for use in tissues are difficult to use and not reversible, making it impossible to move the lock mechanism once it is secured in position.
Innovation Solution
A reversible lock delivery system comprising a lock mechanism with a casing, first and second bodies pivotable about respective pivot points, and a lock delivery catheter with a pushable rod to move the lock mechanism between unlocked and locked configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lock delivery system is used to secure a lock mechanism in position, then the lock mechanism is firmly held in place, but it cannot be moved or repositioned once secured
Solution Approach 1:
The lock mechanism employs dynamic components including pivotable bodies (first and second bodies that can rotate about pivot points) and movable actuating arms that respond to forces applied through the delivery catheter. This dynamic design allows the mechanism to transition between locked and unlocked states, enabling repositioning while maintaining secure locking when engaged.
Solution Approach 2:
The system changes the state parameter of the lock mechanism from locked to unlocked by applying force through the pushable rod within the delivery catheter. This force transmission causes the actuating arms to move and the bodies to pivot, thereby changing the mechanical state of the lock to enable repositioning or removal.
2Ease of operation
If a lock mechanism is designed to be easily movable and repositionable, then it can be adjusted freely, but it may not secure firmly in the desired position
Solution Approach 1:
The mechanism uses dynamic pivotable bodies and movable actuating arms that can be easily repositioned by applying force through the delivery catheter, yet when locked, the interlocking teeth and rigid structure provide firm security. The dynamic design enables both ease of repositioning and reliable locking.
Solution Approach 2:
The lock mechanism is divided into separate functional components including first and second bodies with gripping portions, actuating arms, and interlocking teeth. This segmentation allows independent movement and adjustment of components to achieve repositioning while maintaining secure engagement when locked in position.
3Adaptability or versatility
If a lock delivery system uses a complex mechanism to achieve reversible locking, then it can be moved and secured, but the system becomes difficult to operate
Solution Approach 1:
The delivery catheter with pushable rod serves as an intermediary tool that simplifies operation. By applying linear force through the catheter, the operator can easily actuate the complex pivotable bodies and actuating arms, making the reversible locking mechanism simple to operate despite its mechanical complexity.
Solution Approach 2:
The system combines multiple functions into integrated components: the delivery catheter serves as both the delivery vehicle and the actuating mechanism, while the first and second bodies with their gripping portions and actuating arms are combined into a unified lock mechanism that achieves reversible locking through coordinated movement of its parts.
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 system allows for secure and reversible locking and unlocking of tissues, facilitating applications such as cardiovascular valve repair by enabling the tightening of tissue sections.
Implementation Method 1
The first body may comprise a first gripping portion extending to a first actuating arm, and a first spring arranged spaced-apart from the first actuating arm. The second body may comprise a second gripping portion extending to a second actuating arm, and a second spring arranged spaced-apart from the second actuating arm.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A lock delivery system is disclosed. The lock mechanism is reversible between an unlocked configuration and a locked configuration. The lock mechanism may comprise a casing, and a first body and a second body arranged spaced-apart in the casing. The first body may comprise a first gripping portion extending to a first actuating arm, and a first spring arranged spaced-apart from the first actuating arm. The second body may comprise a second gripping portion extending to a second actuating arm, and a second spring arranged spaced-apart from the second actuating arm. The first and second bodies are each pivotable about a respective first pivot point and second pivot point so as to move the lock mechanism between an unlocked configuration and a locked configuration. A lock delivery catheter may be used as a means to move the lock mechanism between the unlocked configuration and the locked configuration.