Removable Retainer Bars for Endoscopic Occlusion Clamp Deployment
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Solution Overview
Problem
Existing applicators for clamps in minimally invasive procedures lack efficient mechanisms for positioning and deploying occlusion clamps, particularly in terms of secure retention and easy retrieval of retainer bars during clamp deployment and removal.
Innovation Solution
A removable deployment device comprising retainer bars with specific geometric features, such as depressions, projections, and through holes, coupled using sutures or lines, allowing for secure attachment to clamping portions and facilitated grasping by endoscopic graspers, enabling precise positioning and deployment of occlusion clamps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If retainer bars are used to hold clamping portions during delivery, then the clamp can be safely transported and stored, but the retainer bars obstruct repositioning and deployment of the clamp
Solution Approach 1:
The retainer bars are designed to be removable from the clamp assembly after deployment. The cutting zone allows the delivery suture to be severed, enabling the retainer bars to be extracted and removed from the body, thus eliminating the obstruction to clamp repositioning and deployment while maintaining safe transport and storage during delivery
2Reliability
If the clamp is held in a closed configuration during delivery, then the clamping portions are protected and ready for use, but the clamp cannot be repositioned once deployed
Solution Approach 1:
The clamp is designed with dynamic characteristics allowing it to transition from a closed configuration during delivery to an open configuration after deployment. The resilient urging members enable the clamp to be held closed during transport, then opened and repositioned by the surgeon by manipulating the retainer bars and clamping portions, providing both protection and adaptability
3Ease of manufacture
If retainer bars with simple structures are used, then the device is easier to manufacture, but secure retention and easy retrieval become difficult
Solution Approach 1:
The retainer bars incorporate specific geometric features at localized positions: depressions on the exterior surfaces for suture engagement, and projections (crucifixes and hooks) at specific locations for grasper engagement. These localized structural variations provide secure retention during delivery and easy retrieval after deployment, while maintaining overall structural simplicity for ease of manufacture
Data Source
AI summary
An occlusion assembly comprising: (a) a tissue occlusion device comprising a first linear clamping portion and a second linear clamping portion, the first and second linear clamping portions oriented to overlap and be parallel to one another in a clamped position, the tissue occlusion device further including a spring concurrently coupled to and interposed by the first and second linear clamping portions to bias the first and second linear clamping portions toward the clamped position; and, (b) an endoscopic rein coupled to the tissue occlusion device and configured to facilitate repositioning of the tissue occlusion device toward an occlusion position where the first and second linear clamping portions are interposed by tissue, where the endoscopic rein includes a flexible wire coupled to the clamping device and configured to facilitate repositioning of the tissue occlusion device toward the occlusion position.