Anastomosis Wound Protector Shielding Cut Site

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Solution Overview

Problem

Anastomotic surgery procedures often result in leakage at the cut site due to tissue necrosis, loosening of staple or suture lines, exposure to harmful substances, and mechanical forces, leading to increased morbidity, suffering, and mortality, highlighting a need for improved protection methods during or after anastomosis procedures.

Innovation Solution

A wound protector system integrated with a circular stapling device, featuring a tool assembly with flanges and fastening strips, positions the cut site within a pocket and secures it using staples, and optionally inverts to provide a protective covering, utilizing an annular body, fastening strips, and tethers to shield the cut site from harmful substances and mechanical forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If stapling or suturing techniques are used to perform end-to-end anastomosis, then the hollow lumen sections can be connected, but leakage may still occur at the cut site due to tissue necrosis, loosening of staple or suture lines, exposure to harmful substances, or mechanical forces

Engineering Contradiction:
Improveanastomosis connection reliabilityVSAvoidcut site exposure to harmful substances and mechanical forces
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The wound protector is positioned on the anvil before the anastomosis procedure begins. The adhesive strips are applied to the flanges in advance, and the device is secured to the circular stapling device before approximation, creating preliminary protection against harmful substances and mechanical forces before the anastomosis is completed

Inventive Principle:
Principle #9Preliminary anti-action

2Reliability

If the wound protector is secured to the circular stapling device using adhesive strips, then the device can be firmly attached to protect the cut site, but the attachment process requires additional steps to remove cover strips and apply adhesives

Engineering Contradiction:
Improvewound protector attachment reliabilityVSAvoidattachment procedure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The adhesive strips are pre-applied to the flanges of the wound protector during manufacturing or preparation. Cover strips are placed over the adhesive strips in advance, protecting them until the moment of use. This preliminary preparation simplifies the intraoperative process by eliminating the need to apply adhesives during the procedure

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11547411B2Anastomosis wound protector
Publication Date: 2023.01.10 COVIDIEN LP
  • US11547411B2 patent drawing
  • US11547411B2 patent drawing
  • US11547411B2 patent drawing

AI summary

A wound protector includes a tubular body that is configured to protect a cut site of an anastomosis. The wound protector can be secured to the anastomotic site after formation of the anastomosis or, alternatively, secured to the anastomotic site during formation of the anastomosis. The tubular body of the wound protector is positioned and configured to shield the anastomosis from waste material passing through a digestive tract of a patient.