Vascular Occluder Locking Assembly for Detachment-Resistant Fixation
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Solution Overview
Problem
Existing occluders used for treating vascular tears face issues with fixation, leading to detachment due to vascular pulsation or muscle contraction, increasing postoperative risks and reducing therapeutic efficacy.
Innovation Solution
An occlusion device with a locking assembly featuring elastically deformable members, including a mesh structure, allows for adjustable locking and unlocking through elastic deformation, enhancing stability and firmness of the occluder's positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional occluders are used for treating vascular tears, then the occlusion function is provided, but the fixation effect is insufficient leading to detachment due to vascular pulsation or muscle contraction
Solution Approach 1:
The locking assembly incorporates elastically deformable members that can dynamically adjust to vascular pulsation and muscle contraction. The elastic deformation capability allows the locking portion to maintain continuous contact and adaptive fixation with the blood vessel, transforming from a static fixation structure to a dynamic one that responds to physiological movements, thereby preventing detachment while maintaining positioning stability.
Solution Approach 2:
The locking assembly uses composite structural design combining rigid and elastic components. The elastically deformable member is integrated with the locking portion to create a composite structure that leverages both the strength of rigid materials and the flexibility of elastic materials, enabling secure fixation that accommodates vascular dynamics without sacrificing structural integrity.
2Reliability
If the occlusion device is designed for secure positioning, then the fixation firmness is improved, but the device complexity increases due to the locking assembly with elastically deformable members
Solution Approach 1:
The locking assembly is integrated with the occlusion device body through the elastically deformable member that connects the locking portion to the occlusion device. This merging of components eliminates the need for separate fixation mechanisms, reducing overall device complexity while maintaining secure positioning firmness through the unified elastic locking structure.
Solution Approach 2:
The elastically deformable member provides self-adjusting fixation capability without requiring external control mechanisms. The elastic deformation occurs automatically in response to vascular pulsation and positioning forces, enabling the locking assembly to self-regulate its fixation strength, thereby achieving reliable positioning firmness without adding complex control systems.
3Reliability
If the occlusion device uses a locking assembly with elastically deformable members, then the detachment risk is minimized, but the manufacturing complexity increases
Solution Approach 1:
The elastically deformable member is designed with specific material parameters and geometric parameters that optimize both detachment resistance and manufacturability. By carefully selecting elastic modulus, wire diameter, mesh structure parameters, and component dimensions, the device achieves reliable fixation while remaining compatible with standard medical device manufacturing processes such as laser cutting, forming, and assembly.
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 device provides secure and stable occlusion by minimizing detachment risks, facilitating miniaturization for use in smaller vessels and promoting blood clotting for enhanced locking strength.
Implementation Method 1
Any one of the distal locking portion and the proximal locking portion includes an elastically deformable member, at least a portion of the elastically deformable member is elastically deformable, and locking and unlocking between the distal locking portion and the proximal locking portion are achieved through elastic deformation of the elastically deformable member
Implementation Method 2
The elastically deformable member includes a mesh structure... promoting blood clotting for enhanced locking strength
Data Source
AI summary
An occlusion device and an occlusion system are provided. The occlusion system includes an occlusion device. The occlusion device includes an occlusion assembly and a locking assembly. The occlusion assembly includes a distal occlusion portion, a waist portion, and a proximal occlusion portion. The waist portion is connected between the distal occlusion portion and the proximal occlusion portion. The locking assembly includes a distal locking portion and a proximal locking portion. The distal locking portion is connected to the distal occlusion portion, and the proximal locking portion is connected to the proximal occlusion portion. Any one of the distal locking portion and the proximal locking portion includes an elastically deformable member, at least a portion of the elastically deformable member is elastically deformable, and locking and unlocking between the distal locking portion and the proximal locking portion are achieved through elastic deformation of the elastically deformable member.