Tissue Retraction Delivery Structure for Clearer Endoscopic Dissection
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Solution Overview
Problem
Current medical procedures for extracting cancerous lesions are inefficient and time-consuming due to poor visualization and tissue obstruction, necessitating a device that improves visualization and mitigates tool obstruction during tissue dissection.
Innovation Solution
A tissue retraction device and delivery system comprising engagement members, elastic members, and alignment members, which can be deployed through a delivery catheter to lift and retract target tissue, enhancing visualization and facilitating efficient dissection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional medical procedures are used for extracting cancerous lesions, then the procedure can be performed with simple equipment, but the procedure is inefficient and time-consuming due to poor visualization and tissue obstruction
Solution Approach 1:
The tissue retraction device is deployed before dissection begins, with engagement members positioned to grasp and retract tissue edges. This preliminary action clears the surgical field and improves visualization before the actual dissection procedure starts, eliminating the need to pause during dissection to manage tissue obstruction.
Solution Approach 2:
The device divides the tissue manipulation function into separate engagement members that can independently grasp and retract different portions of tissue. This segmentation allows simultaneous control of multiple tissue edges, improving procedural efficiency by eliminating the need to sequentially manage different tissue portions.
2Illumination intensity
If tissue is left in place during dissection, then the surgical field remains simple to manage, but visualization is poor and tools are obstructed
Solution Approach 1:
The alignment member serves as an intermediary structure that guides the elastic member through the delivery catheter and maintains proper positioning during deployment. This intermediary component ensures the retraction device is correctly positioned without requiring complex positioning mechanisms, balancing visualization improvement with manageable device complexity.
Solution Approach 2:
The tissue retraction device is nested within a delivery catheter for minimally invasive delivery. The engagement members and elastic members are contained within the catheter lumen during delivery, allowing the complex device to be delivered through a simple catheter structure, thus improving visualization without proportionally increasing external device complexity.
3Volume of moving object
If the elastic member is allowed to fold during delivery, then the device can be compacted for delivery, but the elastic member may not function properly upon deployment
Solution Approach 1:
The alignment member has an asymmetric cross-sectional shape that corresponds to the asymmetric folding pattern of the elastic member. This asymmetric design ensures the elastic member folds in a controlled, predictable manner during delivery while maintaining its structural integrity and functional properties upon deployment.
Solution Approach 2:
The alignment member is designed as a flexible tubular structure that allows the elastic member to flex and fold during delivery without compromising the elastic member's functionality. The flexible shell protects the elastic member while permitting the necessary deformation for catheter-based delivery.
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 improves procedural efficiency by lifting and retracting tissue, reducing obstruction and improving visualization, thereby shortening dissection times and enhancing procedural accuracy.
Implementation Method 1
a first elastic member disposed between the first engagement member and the second engagement member
Implementation Method 2
the elastic member is designed to shift from a first position to a second elongated position
Data Source
Figure 1
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Figure 2B
AI summary
The present invention realtes to a tissue retraction device, comprising: a first engagement member having a first end and a second end; a second engagement member having a first end and a second end; a first elastic member disposed between the first engagement member and the second engagement member; and a first swivel disposed between the first engagement member and the second engagement member.