Rotary Locking Mechanism for Artificial Implant Pulling Wire Control
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Solution Overview
Problem
Existing methods for controlling the connection between artificial implants and catheter assemblies, such as direct clamping or wire control, lack efficient locking and unlocking mechanisms, leading to suboptimal management of the artificial implant's deployment and retrieval.
Innovation Solution
A control mechanism featuring a base with a locking area and a rotatable locking member that engages or disengages with a pulling wire, allowing precise control over the artificial implant's expansion, release, and withdrawal through a series of locking and unlocking states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wire control method is used to bind and lock the artificial implant to the catheter assembly, then the artificial implant can be securely held in compressed state during delivery, but the control mechanism becomes more complex and requires additional flexible components and locking structures
Solution Approach 1:
The locking member is divided into distinct functional segments: a connecting portion that attaches to the catheter assembly, a positioning portion that engages with the pulling wire, and a rotatable body that enables locking/unlocking transitions. This segmentation allows each part to perform its specific function efficiently while maintaining overall system reliability.
Solution Approach 2:
The locking member transitions from a static binding structure to a dynamic rotatable mechanism. By enabling rotation of the locking member body, the system can switch between locked and unlocked states, providing controlled release of the artificial implant without requiring complete disassembly of the binding structure.
2Ease of operation
If a rotatable locking member with positioning portion is introduced to control the pulling wire, then the expansion and release process becomes smoother and more controllable, but the device complexity increases with additional components
Solution Approach 1:
The locking member integrates multiple functions into a single component: it combines the connecting function (attaching to catheter), the positioning function (engaging pulling wire), and the control function (rotatable locking/unlocking). This merging reduces the need for separate components for each function, simplifying the overall device while maintaining ease of operation.
Solution Approach 2:
The locking member serves multiple purposes: it acts as a connector between the catheter assembly and pulling wire, a positioner that controls wire engagement, and a switchable lock that enables both secured and released states. This multi-functionality allows a single component to replace what would otherwise require multiple separate parts.
3Measurement precision
If the locking member is designed to engage or disengage from the locking area during rotation, then precise control over the artificial implant's deployment is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The locking member incorporates curved or rounded engagement surfaces that interface with the locking area. These curved surfaces provide gradual engagement and disengagement during rotation, reducing the sensitivity to manufacturing tolerances compared to sharp-edged or flat surfaces that would require precise alignment.
Solution Approach 2:
The locking mechanism includes built-in tolerance compensation through the rotational engagement design, where the locking area and positioning portion are designed to accommodate minor manufacturing variations. The rotational motion allows for self-alignment and gradual engagement, cushioning against precision errors that would otherwise prevent proper locking.
Data Source
AI summary
Disclosed in the present application are a control mechanism, a locking mechanism, a loading method, and a pre-loading method for an artificial implant. The control mechanism includes a base, a pulling wire, and a locking member. The base is configured with a locking hole. The pulling wire has a free end that can be passed through, wound around, or detached from the artificial implant. The locking member and the base are rotatably engaged to lock the free end of the pulling wire. After the control mechanism is optimized, it can cooperate to realize the control of the expansion, release, or withdrawal process of the artificial implant in the body, which is more suitable for internal work than existing structures.