Multi-Layer Tissue Containment Bag for Surgical Tool Puncture Protection
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Solution Overview
Problem
During surgical procedures like myomectomy and hysterectomy, the risk of perforating tissue containment bags with surgical tools exists, leading to potential dissemination of cancerous cells, which can seed cancer growth at other body locations, and existing solutions fail to adequately prevent such leakage.
Innovation Solution
A tissue containment device with a multi-layered bag structure featuring inflatable volumes between layers, forming wall cavity regions that surround the internal volume, reducing the risk of perforation and providing immediate pressure loss detection through fluid-filled cavities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer containment bag is used, then the device complexity is low, but the reliability is insufficient due to perforation risk
Solution Approach 1:
The containment bag wall is segmented into multiple layers (at least two layers) spaced apart from each other, creating a multi-layered structure. This segmentation provides redundant containment barriers, so that if one layer is perforated, other layers remain intact to prevent leakage of cancerous cells.
Solution Approach 2:
The spaced-apart connection regions create buffer zones between layers, providing a protective cushion that absorbs the impact of potential perforations. This prior cushioning ensures that even if one layer fails, the adjacent layers prevent immediate leakage.
2Productivity
If tools are introduced into the containment bag for tissue reduction, then the productivity is improved, but the risk of perforation increases
Solution Approach 1:
The multi-layered wall structure with spaced-apart layers creates multiple independent barriers. Surgical tools can be introduced through the opening to perform tissue reduction procedures while the segmented layers provide redundant protection against perforation-induced leakage.
Solution Approach 2:
The buffer zones between layers are established beforehand to absorb potential perforation damage from surgical tools, allowing aggressive tissue reduction procedures to be performed with reduced risk of cancerous cell dissemination.
3Measurement precision
If the layers are closely connected, then the device complexity is reduced, but the detection precision of perforations is lowered
Solution Approach 1:
The connection regions are segmented and spaced apart rather than continuously connected, creating discrete connection points. This segmentation allows fluid to accumulate in the inter-layer space when a perforation occurs, enabling detection through pressure or volume changes while maintaining structural integrity.
Solution Approach 2:
The fluid-filled space between layers acts as an intermediary medium that transmits the effect of perforations. When a perforation occurs, fluid movement or pressure changes in this intermediary space provide detectable signals indicating the location and severity of the breach.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device significantly reduces the risk of cancerous cell leakage by ensuring any puncture affects only one layer, facilitating immediate detection of breaches and maintaining pressure integrity, thus preventing dissemination of cancerous cells.
Implementation Method 1
at least one inflatable volume in fluid connection with a corresponding inflation port for introducing and removing a fluid to and from the at least one inflatable volume
Data Source
AI summary
A tissue containment device (10) for isolating tissue from surrounding tissue during a surgical procedure to remove the tissue includes a bag (12) formed by one or more walls (14) defining a containment compartment (16) and an opening (18) for accessing the containment compartment. Each wall (14) is formed from at least two layers including an inner layer (20) facing the containment compartment and an outer layer (22) facing outwards from bag (12). The layers define between them one or more inflatable volumes (24). Layers (20) and (22) are interconnected at spaced-apart connection regions (28) that are arranged such that, when a fluid is introduced into the inflatable volumes (24), regions of the at least two layers between the connection regions form wall cavity regions surrounding an internal volume of the containment compartment.