Endoscopic Full-Circumferential Tissue Resectioning Device
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Solution Overview
Problem
Conventional resectioning devices for the gastrointestinal tract require incisions, leading to pain, longer recovery times, and increased risk for deep invasive cancers, as they lack steering and viewing capabilities, making it difficult to perform full-thickness resections endoscopically.
Innovation Solution
An endoscopic full-circumferential resectioning device with a first and second scaffold, each having a tubular configuration, equipped with a hook tool that biases the scaffolds to engage and resect tissue, allowing for minimally invasive procedures without incisions, using cutting surfaces and attachment tangs to secure and remove tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional resectioning devices are used, then tissue resectioning can be performed, but incisions are required which cause pain and longer recovery times
Solution Approach 1:
The device delivers multiple nested components through a single incision or natural orifice. The inner components (scaffolds, cutting elements, stapling mechanisms) are contained within outer delivery catheters, allowing sequential deployment without additional incisions. This nesting approach enables complex resectioning procedures while maintaining minimally invasive access.
Solution Approach 2:
The patent introduces intermediate structures such as scaffolds and delivery catheters that mediate between the external access point and the target tissue. These intermediaries enable the transmission of mechanical forces, positioning, and deployment mechanisms through a single access route, eliminating the need for multiple incisions while maintaining procedural capability.
2Reliability
If conventional resectioning devices are used, then tissue resectioning can be performed, but the devices lack steering and viewing capabilities
Solution Approach 1:
The device integrates multiple functions into a single system: the delivery catheter serves as both the access route and positioning mechanism, the scaffolds provide both structural support and steering capability, and integrated markers enable imaging guidance. This multi-functionality allows the device to perform resectioning, navigate, and be visualized without requiring separate instruments.
Solution Approach 2:
The patent incorporates radiopaque markers and imaging-visualizable components that allow the device to be detected and tracked during the procedure. These markers change their detectability or appearance under different imaging modalities (fluoroscopy, endoscopic visualization), providing real-time feedback on device position and orientation without requiring separate viewing instruments.
3Reliability
If conventional resectioning devices are used, then tissue resectioning can be performed, but the procedure requires multiple incisions increasing patient risk
Solution Approach 1:
The patent extracts the cutting and resectioning functionality from traditional incision-based approaches and delivers it through a single minimally invasive access point. The cutting elements and resectioning mechanisms are contained within the delivery system and deployed internally, eliminating the need for external incisions and associated risks.
Solution Approach 2:
The device combines multiple procedural steps (access, positioning, resectioning, hemostasis, closure) into a single integrated system delivered through one access point. By merging these functions into one device, the procedure requires only one incision or natural orifice, reducing cumulative patient risk compared to multiple separate incisions.
4Manufacturing precision
If deep invasive cancers are treated with conventional techniques, then some tissue removal is possible, but full thickness resectioning cannot be achieved safely
Solution Approach 1:
The device performs preliminary actions by deploying scaffolds and positioning structures before the actual resectioning occurs. These preliminary steps establish precise boundaries, provide structural support for full-thickness cutting, and prepare the tissue environment for safe deep resection. The scaffolds are positioned and secured prior to activating cutting mechanisms, ensuring controlled full-thickness removal.
Solution Approach 2:
The resectioning process is segmented into distinct phases: scaffold deployment, tissue engagement, controlled cutting through full thickness, and sequential closure. Each phase is independently controlled and verified, allowing safe progression through deep tissue layers. The segmentation enables stepwise verification of positioning and depth control before committing to full-thickness resection.
Data Source
AI summary
The present disclosure relates generally to apparatuses, devices, and methods for performing endoscopic tissue resectioning in the gastrointestinal tract. In some embodiments, a tissue resectioning device may include first and second scaffolds each arranged in a tubular configuration. The tissue resectioning device may further include a hook tool engageable with the first scaffold and/or the second scaffold to bias the scaffolds to engage a target section of tissue between the first scaffold and the second scaffold. The hook tool may also engage the section of tissue to pull the section of tissue into the path of a cutting edge of each of the first and second scaffolds. In some embodiments, the tissue resectioning device is provided over a scope, which extends within a lumen of an overtube.