Vascular Occluder Locking Mesh for Secure Fixation in Small Vessels
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Solution Overview
Problem
Existing occluders used for treating vascular lesions face issues with fixation, leading to detachment due to vascular pulsation or muscle contraction, increasing postoperative risks and reducing therapeutic effectiveness.
Innovation Solution
An occlusion device with a locking assembly featuring elastically deformable members, including a distal and proximal locking portion, allows for secure locking and unlocking through elastic deformation, enhancing the firmness of the occluder's positioning at the blood vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional occluders are used without locking mechanisms, then the device structure remains simple, but the fixation effect is poor leading to detachment due to vascular pulsation or muscle contraction
Solution Approach 1:
The locking assembly is divided into multiple independent locking portions (distal locking portion and proximal locking portion) that can be selectively engaged. Each locking portion includes separate elastically deformable members that can independently deform and lock, allowing the system to achieve reliable fixation through modular engagement rather than a monolithic complex structure
Solution Approach 2:
The elastically deformable members provide dynamic locking capability by deforming under vascular pulsation or muscle contraction forces and then recovering to maintain the locked state. This dynamic response allows the locking mechanism to adapt to physiological movements while maintaining secure fixation, resolving the contradiction between simple structure and reliable fixation
2Reliability
If the occlusion device is designed for secure locking to prevent detachment, then fixation firmness is improved, but the device size increases making it difficult to use in smaller blood vessels
Solution Approach 1:
The locking portions and elastically deformable members are nested within the occlusion assembly structure. The distal and proximal locking portions are integrated into the occlusion device framework, with elastically deformable members housed within locking channels or cavities. This nesting allows the locking mechanism to be compact while maintaining sufficient locking force for secure fixation in small blood vessels
Solution Approach 2:
The elastically deformable members function as flexible structural elements that can deform within confined spaces. These thin-walled or flexible components allow the locking mechanism to achieve adequate locking force without requiring large volume, enabling deployment in smaller blood vessels while maintaining fixation firmness
3Strength
If the occlusion device uses rigid locking structures to ensure stable positioning, then locking strength is improved, but the device cannot adapt to vascular pulsation or muscle contraction
Solution Approach 1:
The elastically deformable members change their physical state by deforming under physiological forces such as vascular pulsation or muscle contraction. This parameter change (deformation) allows the locking mechanism to adapt to dynamic conditions while maintaining locking strength through elastic recovery, resolving the contradiction between rigid locking strength and adaptability to vascular movement
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 design improves the stability and security of the occlusion device's locked state, preventing detachment and facilitating secure occlusion of vascular tears, while allowing miniaturization for use in smaller blood vessels and promoting blood clotting for enhanced 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
Data Source
Figure 1a~1b
Figure 2a~4a
Figure 4b~5
AI summary
An occlusion device and an occlusion system are provided in the disclosure. The occlusion system includes an occlusion device (100). The occlusion device (100) includes an occlusion assembly (110) and a locking assembly (120). The occlusion assembly (110) includes a distal occlusion portion (111), a waist portion (113), and a proximal occlusion portion (112). The waist portion (113) is connected between the distal occlusion portion (111) and the proximal occlusion portion (112). The locking assembly (120) includes a distal locking portion (121) and a proximal locking portion (122). The distal locking portion (121) is connected to the distal occlusion portion (111), and the proximal locking portion (122) is connected to the proximal occlusion portion (112). Any one of the distal locking portion (121) and the proximal locking portion (122) includes an elastically deformable member (130), at least a portion of the elastically deformable member (130) is elastically deformable, and locking and unlocking between the distal locking portion (121) and the proximal locking portion (122) are achieved through elastic deformation of the elastically deformable member (130). The elastically deformable member (130) includes a mesh structure.