Gastrectomy Device with Expandable Shape Modification Member
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Solution Overview
Problem
Current bariatric surgery techniques for sleeve gastrectomy lack efficient tools for accurately reshaping and reshaping the stomach during procedures, leading to potential complications and inefficiencies in weight loss treatments.
Innovation Solution
A gastrectomy device comprising a tubular elongated member with an expandable balloon and shape modification member, equipped with lights and actuators, that can be inserted through the esophagus to reshape the stomach, facilitate resection, and ensure securement within the stomach, utilizing expandable features and stress relief mechanisms for precise surgical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional bougie is used as a guide for transecting the stomach, then the procedure is simple and easy to perform, but the precision and accuracy of stomach reshaping are insufficient
Solution Approach 1:
The shape modification member is movable through the side opening of the elongated member, with the shape modification member being nestable within the elongated member during insertion and deployment through the stomach wall. This nested configuration allows the complex device to be delivered through a simple catheter-like structure while providing sophisticated reshaping capabilities once deployed
Solution Approach 2:
The elongated flexible tube member serves as an intermediary delivery system that guides the shape modification member to the target location in the stomach. The tube member with its side opening allows controlled deployment of the shape modification member while maintaining a simple external profile during insertion
2Productivity
If the stomach is transected to reduce volume, then weight loss effectiveness is improved, but the risk of complications such as leakage increases
Solution Approach 1:
The shape modification member is deployed into the stomach lumen before transection to pre-establish the desired stomach configuration. This preliminary shaping guides the subsequent transection process, ensuring that the cut follows the pre-determined safe configuration and reducing the risk of leakage at the staple line
3Manufacturing precision
If a rigid shaping tool is used to remodel the stomach, then the reshaping precision is improved, but the ease of insertion and navigation through the esophagus deteriorates
Solution Approach 1:
The shape modification member transitions from a compressed, flexible state during insertion to an expanded, rigid shaping state once deployed in the stomach. This dynamic transformation allows the device to navigate the esophagus easily in its collapsed configuration while providing rigid, precise shaping capabilities when activated in the target location
Solution Approach 2:
The shape modification member utilizes a flexible membrane or shell structure that can be compressed within the elongated tube member for easy insertion, then expanded to provide rigid shaping forces against the stomach wall. This flexible-to-rigid transformation enables both easy delivery and effective reshaping
Data Source
AI summary
A gastrectomy device includes an elongated member defining a centerline that extends through proximal and distal ends thereof. A shape modification member coupled to the elongated member is movable relative to the centerline of the elongated member. The shape modification member is movable between a first state, adjacent to the elongated member, and a second state, spaced from the elongated member. The shape modification member conforms to a portion of a patient's stomach in the second state.