Endoscopic Cap Assembly for Snare Positioning
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Solution Overview
Problem
Current endoscopic procedures for submucosal dissection are challenging due to the difficulty in gaining clear visual images and accessing lesions, as the delivery and positioning of snare loops and hemoclips are tedious and time-consuming, increasing medical costs.
Innovation Solution
A cap assembly with a sleeve and cap featuring a cap channel, engagement feature, and elastomeric sleeve, which allows for secure engagement and angled deployment of snare loops, facilitating easier positioning and manipulation of hemoclips during endoscopic submucosal dissection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the snare is delivered externally of the endoscope and forceps through the endoscope to position the snare about the hemoclip, then the lesion can be re-oriented for increased visibility and access, but the procedure becomes challenging, tedious, and time consuming
Solution Approach 1:
The cap assembly serves as an intermediary device that simplifies the interaction between the snare and hemoclip. The cap includes a cap channel that guides the snare and an engagement feature that temporarily secures the snare loop, making it easier to position the snare about the hemoclip without complex manual manipulation
Solution Approach 2:
The cap assembly is pre-positioned on the endoscope before snare delivery. The cap channel and engagement feature are prepared in advance to receive and guide the snare, eliminating the need for complex real-time positioning maneuvers during the procedure
2Difficulty of detecting and measuring
If the snare is delivered externally and manipulated to re-orient the lesion, then visibility and access to the submucosa are improved, but the procedure becomes challenging and tedious
Solution Approach 1:
The cap assembly acts as a mediator between the snare delivery system and the lesion. It provides a structured interface through the cap channel and engagement feature, simplifying the complex task of positioning the snare for optimal lesion visibility and access
Data Source
AI summary
An endoscopic cap assembly may include a sleeve and a cap. The cap may include a cap channel extending along an external surface of the cap. The cap may also include an engagement feature extending radially outwardly from the external surface of the cap.