Endoscopic Stapler Trigger Mechanism for Tissue Approximation
Solution Overview
Problem
Current methods for connecting or reconnecting tissues in the upper aerodigestive tract, such as the larynx, trachea, and esophagus, are cumbersome, slow, and inaccurate due to the use of sutures in restricted spaces.
Innovation Solution
An endoscopic stapler apparatus and method that allows for the deployment of staples in a controlled manner through a small working channel, enabling efficient and precise tissue approximation and reapproximation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sutures are used to connect tissue in restricted spaces, then tissue connection can be achieved, but the procedure becomes cumbersome and slow
Solution Approach 1:
The patent replaces the manual suture tying mechanism with a mechanically actuated stapling system. The stapler uses a trigger-operated mechanism that automatically drives staples through tissue and secures them with a closing action, eliminating the need for manual knot-tying and significantly improving both speed and ease of operation in restricted spaces
Solution Approach 2:
The stapler mechanism is designed to perform multiple functions automatically: positioning, penetration, deformation, and securing of staples all occur through a single trigger action without requiring separate manual steps for each operation, making the system self-sufficient and reducing operator complexity
2Manufacturing precision
If sutures are used for tissue connection, then tissue can be joined, but accuracy is compromised in restricted spaces
Solution Approach 1:
The stapler is divided into distinct functional segments: an outer shaft for navigation, an inner shaft for staple delivery, and a closing mechanism for securing staples. This segmentation allows each component to be optimized for its specific function while maintaining overall precision in restricted anatomical spaces
Solution Approach 2:
The patent introduces a specialized stapler device as an intermediary tool that bridges the gap between standard endoscopic equipment and precise tissue connection requirements, providing the necessary accuracy for restricted spaces without requiring complex surgical techniques
3Productivity
If a stapler system is implemented for tissue connection, then speed and accuracy improve, but device complexity increases
Solution Approach 1:
The stapler employs a nested structure where the inner shaft containing the staple delivery mechanism is housed within the outer shaft. This nested design consolidates multiple functional components into a compact, integrated apparatus that improves efficiency while managing device complexity through spatial organization
Solution Approach 2:
The stapler system is designed to perform multiple functions through a single integrated device: tissue approximation, staple deployment, and secure closure all occur through one instrument, improving overall repair efficiency without requiring multiple separate complex devices
Data Source
AI summary
Disclosed is an endoscopic stapler that can be operated through the small working channel of a laryngoscope, other rigid endoscope, or a natural orifice to safely and effectively connect tissues permanently or semi-permanently. The endoscopic stapler apparatus includes a handle including a trigger, an outer shaft coupled to the handle, and an inner shaft with prongs positioned at a distal end of the inner shaft. The endoscopic stapler further includes a hook, wherein the hook and prongs are positioned to capture a staple at a tip of the prongs, wherein a proximal end of the inner shaft is coupled to the trigger, and wherein activation of the trigger causes the prongs to translate away from the handle causing the prongs to bend and close the staple.