Surgical Buttress Retention via Segmented Sutures
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surgical stapling apparatus require full firing stroke to release surgical buttresses, leading to incomplete detachment if actuation is terminated prematurely, necessitating additional surgical intervention to free the buttress material.
Innovation Solution
A surgical buttress retention system with proximal and distal guide slots and a rotatable plug that secures the buttress to the stapling apparatus, allowing for release with a single proximal cut during partial firing, eliminating the need for additional surgical intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a full firing stroke is required to release the surgical buttress, then the buttress is securely retained during stapling, but additional surgical intervention is needed if actuation is terminated prematurely
Solution Approach 1:
The retention system is divided into two independent suture mechanisms: a proximal suture tie-down and a distal suture tie-down. Each suture operates independently to secure different portions of the buttress, allowing the proximal suture to be released by a single cut while the distal suture remains intact until full firing stroke completes the release sequence.
Solution Approach 2:
The knife blade acts as an intermediary cutting mechanism that severs the proximal suture during the firing stroke. This intermediary action allows automatic release of the proximal portion of the buttress without requiring additional surgical intervention, while the distal suture continues to provide retention until full firing is complete.
2Reliability
If distal suture tie down is not severed during partial firing, then buttress remains attached to stapling apparatus, but surgical intervention is required to free the buttress
Solution Approach 1:
The retention system is pre-configured with two suture tie-downs positioned to secure different portions of the buttress. The proximal suture is designed to be released by a single cut during partial firing, providing preliminary release action that eliminates the need for additional surgical intervention to free the buttress from the stapling apparatus.
3Ease of operation
If a single proximal cut is used to release the buttress, then release is simplified and no additional intervention is needed, but secure retention during stapling must be maintained
Solution Approach 1:
The retention system segments the buttress into proximal and distal portions secured by separate sutures. The proximal suture can be released by a single cut for simplified operation, while the distal suture maintains secure retention during stapling and is released automatically when full firing stroke is completed.
Solution Approach 2:
Different portions of the buttress have different retention requirements. The proximal portion is designed for easy release by a single cut, while the distal portion maintains secure attachment during stapling. This local differentiation of retention quality allows simplified release operation while maintaining overall reliability during the stapling process.
Data Source
AI summary
A surgical stapling apparatus includes a jaw assembly including an anvil assembly and a staple cartridge assembly, at least one which includes a surgical buttress retention system, and a surgical buttress releasably secured to a tissue facing surface of the anvil assembly or the staple cartridge assembly via the surgical buttress retention system. The surgical buttress retention system includes proximal guide slots defined in opposed sides of the anvil assembly or the staple cartridge assembly that have a generally U-shaped configuration that are mirror images of each other, a plug coupled to a distal portion of the anvil assembly or the staple cartridge assembly, and a retention member including a central portion extending across a proximal portion of the surgical buttress, second portions positioned within the proximal guide slots, third portions extending across a distal portion of the surgical buttress, and end portions coupled to the plug.