Oscillating Endoscopic Resection Cap for Safer Tissue Dissection
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Solution Overview
Problem
Endoscopic submucosal dissection (ESD) procedures face challenges such as limited visibility, difficulty in maintaining the dissection plane, anatomical positioning limitations, and the risk of bleeding and perforation due to the use of electrocautery, leading to high complication rates and prolonged procedure times.
Innovation Solution
A medical device with a built-in oscillating dissector, integrated into an endoscopic resection cap, that performs a predetermined movement to facilitate safe and efficient tissue dissection, providing improved visibility and control, reducing the risk of unintended cutting and perforation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If electrocautery is used for tissue cutting, then cutting precision is improved, but the risk of bleeding and perforation increases
Solution Approach 1:
The patent replaces electrocautery (thermal/electrical system) with a mechanical oscillating blade system. The oscillating blade performs blunt dissection through mechanical vibration and repeated cutting motions, eliminating the thermal damage and uncontrolled cutting associated with electrocautery, thus reducing bleeding and perforation risks while maintaining cutting effectiveness
Solution Approach 2:
The patent employs an oscillating blade that vibrates at high frequency during tissue dissection. This mechanical vibration enables the blade to cut through tissue more effectively through repeated micro-cutting motions, improving cutting precision while the controlled mechanical action reduces the risk of accidental damage to surrounding structures compared to electrocautery
2Ease of operation
If manual dissection is performed with careful small cuts, then control over tissue cutting is improved, but procedure time increases
Solution Approach 1:
The patent uses an oscillating blade that performs rapid periodic cutting motions. This periodic action allows the physician to maintain control over the dissection process while significantly reducing the time required compared to manual cutting, as the oscillating blade can process tissue more quickly through repeated vibration-based cutting cycles
Solution Approach 2:
The patent introduces a dynamic oscillating blade system that can adapt to different tissue conditions. The oscillating motion provides continuous cutting action while the physician maintains control through the endoscope interface, combining the speed of automated cutting with the control of manual operation
3Manufacturing precision
If the dissection plane is visible but small, then precision of dissection is improved, but the difficulty of reaching the dissection plane increases
Solution Approach 1:
The patent uses the oscillating motion to add a temporal dimension to the cutting action. The blade oscillates back and forth through the tissue, effectively working its way through the dissection plane over time. This allows the physician to reach the dissection plane even when it is small and difficult to access, while maintaining precision through the controlled oscillating motion
Data Source
AI summary
A medical device for facilitating a minimally invasive surgical procedure may include a housing and an arm. The housing may be configured for engagement around an outer circumferential surface of an endoscope and may include a first cavity. The arm may include at least one cutting surface and may be movably received within the first cavity. The arm may be configured to perform a first predetermined movement along at least a first plane at a predetermined frequency.