Endoscopic Dissection Clips with Blunt Tips for Lesion Lifting
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Solution Overview
Problem
Existing endoscopic submucosal dissection (ESD) methods face challenges in efficiently grasping and dissecting lesions without causing damage to surrounding healthy tissue, particularly due to the use of hemostatic clips with pointed tips that penetrate or damage tissue.
Innovation Solution
A surgical system comprising first and second surgical clips, where the first clip has a resilient member and pointed distal tips for grasping lesions, and the second clip has blunt distal tips for atraumatic grasping of healthy tissue, allowing the resilient member to lift the lesion away from the tissue wall, minimizing tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hemostatic clips with pointed tips are used to grasp tissue during ESD, then the clips can effectively penetrate and secure the tissue, but the clips cause damage to surrounding healthy tissue
Solution Approach 1:
The surgical clip implements local quality by providing different tip characteristics at different locations: the first jaw member has a pointed distal tip for effective tissue penetration and grasping, while the second jaw member has a blunt distal tip to minimize damage to surrounding healthy tissue. This allows each part of the clip to have optimized properties for its specific function.
2Measurement precision
If a resilient member is added to the surgical clip to lift the lesion, then the dissection precision is improved, but the device complexity increases
Solution Approach 1:
The resilient member is pre-configured in a stored state within the surgical clip device. When deployed, it automatically transitions to a deployed state that bows outwardly to lift the lesion away from the tissue wall, performing the lifting action in advance before the dissection process begins. This preliminary action prepares the tissue in an optimal position for precise dissection.
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 system effectively grasps and dissects lesions while preventing damage to healthy tissue, enhancing the precision and safety of endoscopic submucosal dissection by using clips with tailored distal tip designs.
Implementation Method 1
The resilient member is configured to transition between a stored state and a deployed state, in which the resilient member bows outwardly
Data Source
AI summary
A surgical system for performing an endoscopic submucosal dissection includes first and second surgical clips each having first and second jaw members for grasping tissue therebetween. The first surgical clip includes a resilient member attached to one of the jaw members and configured to bow outwardly to engage tissue. The jaw members of the first surgical clip each has a pointed tip and each of the jaw members of the second surgical clip has a blunt distal tip.