Tissue Retraction Delivery Device with Orienting Tip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medical procedures for tissue dissection, such as Endoscopic Submucosal Dissection and Peroral Endoscopic Myotomy, face inefficiencies due to poor visualization and obstruction of tools by the target tissue, leading to prolonged procedures.
Innovation Solution
A tissue retraction delivery device comprising a delivery catheter with an engagement member orienting tip and an actuation wire system that deploys and positions a tissue retraction device within the body lumen to lift and retract target tissue, improving visualization and tool access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tissue retraction is implemented to improve visualization and tool access, then procedural efficiency is improved, but device complexity increases
Solution Approach 1:
The tissue retraction device is nested within the delivery catheter in a compact configuration for delivery, then deployed outward to provide tissue retraction. The engagement member, orienting tip, and retraction elements are all contained within the catheter lumen during delivery, then extracted or expanded to perform their functions, resolving the contradiction between improved procedural efficiency and increased device complexity.
Solution Approach 2:
The tissue retraction device is divided into multiple functional segments including the delivery catheter, engagement member, orienting tip, and retraction elements. Each segment performs a specific function and can be independently controlled or deployed, allowing the system to achieve high procedural efficiency while managing overall device complexity through modular design.
2Manufacturing precision
If a delivery catheter with orienting tip is used to position the engagement member, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The orienting tip is pre-formed at the distal end of the delivery catheter with a specific angular orientation (e.g., 45 degrees) to guide the engagement member into the correct position during deployment. This preliminary geometric configuration eliminates the need for complex active positioning mechanisms, achieving high positioning precision while minimizing device complexity.
Solution Approach 2:
The orienting tip acts as an intermediary element between the delivery catheter and the engagement member. It provides a geometric guide surface that passively directs the engagement member into the desired orientation and position during deployment, achieving precise positioning without requiring complex active control systems.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Medical devices and methods of using medical devices are disclosed. An example tissue retraction delivery device includes a positioning assembly, the assembly including: a delivery catheter having a distal end region and a lumen extending therein, wherein the distal end region includes an engagement member orienting tip. The delivery device also includes an actuation catheter extending within at least a portion of the delivery catheter, the actuation catheter including a distal end region and a lumen extending therein. An actuation wire extends within the lumen of the actuation catheter, the actuation wire having a proximal end region and a distal end region. An end effector is coupled to the distal end region of the actuation wire, the end effector configured to capture an engagement member of a tissue retraction device, wherein manipulation of the actuation wire shifts the end effector from a first position to a second closed position.