Catheter-Based Cardiac Securing Device for Minimally Invasive Valve Anchoring
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Solution Overview
Problem
Current medical securing devices for cardiac implant devices, such as those for heart valves, are time-consuming, prone to errors, and can damage tissue due to manual suturing or the difficulty in positioning small screws, especially in a closed and moving system like the heart, with risks of misalignment and incomplete anchoring.
Innovation Solution
A medical securing device featuring an elongated sheath with a securing member introduction device that allows for precise and controlled placement of securing members, such as sutures or shape memory materials, through the tissue with minimal tissue damage, using a thrust arm mechanism and retrieval device for secure anchoring, facilitating catheter-based procedures and minimizing the need for multiple knots or small screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual suturing with traditional needle and yarns is used to secure cardiac implant devices, then the securing can be performed with simple equipment, but the procedure becomes time-consuming requiring at least seven knots to be tied
Solution Approach 1:
The patent replaces the traditional manual needle and yarn suturing system with a catheter-based delivery system that uses a pre-formed loop structure and a securing member (such as a screw or staple) to anchor the device. This substitution eliminates the need for multiple manual knots while maintaining secure attachment, significantly reducing procedure time.
Solution Approach 2:
The securing mechanism is pre-formed and prepared before insertion into the heart. The loop structure and anchoring components are assembled in advance within the catheter, allowing for rapid deployment during the procedure without requiring time-consuming manual knot-tying steps.
2Ease of manufacture
If traditional manual suturing is used to secure cardiac implant devices, then the equipment remains simple, but the risk of errors increases due to the closed and moving system like the heart
Solution Approach 1:
The patent replaces manual suturing with a catheter-based delivery system that provides controlled, precise placement of the securing member. The system includes features such as a retrieval device and positioning mechanisms that enable accurate anchoring in the moving cardiac environment, reducing errors associated with manual manipulation.
Solution Approach 2:
The catheter acts as an intermediary device that bridges the operator and the securing mechanism within the heart. It provides a stable platform for deploying the securing member and includes features like the retrieval device that enable precise control and adjustment, improving reliability in the dynamic cardiac environment.
3Strength
If small screws are used for securing cardiac implant devices, then the anchoring can be strong, but the positioning becomes extremely difficult with risks of misalignment and incomplete anchoring
Solution Approach 1:
The securing mechanism is divided into separate functional components: the securing member (screw or staple) providing anchoring strength, and the catheter-based delivery system with retrieval device providing ease of positioning and control. This segmentation allows each component to be optimized for its specific function while working together as an integrated system.
Solution Approach 2:
The catheter-based delivery system serves as an intermediary that simplifies the positioning of small securing members. It includes features such as the retrieval device and controlled release mechanisms that enable precise placement and alignment, making the operation of small anchoring components feasible and accurate.
4Reliability
If multiple knots are tied to ensure secure anchoring, then the reliability of securing improves, but the procedure becomes more time-consuming
Solution Approach 1:
The patent replaces the multi-knot suturing system with a single anchoring action using a securing member (screw or staple) deployed through the catheter. This single-action mechanism achieves equivalent or superior reliability to multiple knots while dramatically reducing the time required for the securing process.
Solution Approach 2:
The securing mechanism is pre-configured within the catheter with all necessary components in place. The retrieval device and release mechanisms are prepared in advance, allowing the securing member to be deployed in a single controlled action rather than requiring multiple sequential knot-tying steps.
Data Source
AI summary
A medical securing device for securing an object with a securing member into a tissue comprises an elongated sheath with proximal and distal ends, and a securing member introduction device having proximal and distal ends. The securing member comprises first and second ends. The distal end of the securing member introduction device is configured to extend the second end of the securing member from the sheath and introduce it to or through the tissue via an introduction movement so to secure the portion of the securing member to the object and/or to the tissue. This is advantageously configured to happen without extending the securing member introduction device through the tissue whereupon no extra hole is made to the tissue by the securing member introduction device.