Inflatable Pneumoperitoneum Bag for Tissue Isolation
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Solution Overview
Problem
Current laparoscopic procedures face challenges in safely isolating and extracting tissue from the abdomen without dispersing tissue and cellular fluids within the peritoneal cavity, which can lead to the release of harmful materials like cancerous cells.
Innovation Solution
An artificial pneumoperitoneum device, comprising an inflatable bag with a tissue-receiving opening and a cuff that biases into an open configuration, is used to create a controlled environment for tissue isolation and extraction. The bag is inserted through a small incision, inflated to create additional working and viewing space, and allows for procedures like morcellation within the bag, ensuring containment of tissue and fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional open incision is made for tissue extraction, then tissue can be easily removed, but harmful materials like cancerous cells may disperse into the peritoneal cavity
Solution Approach 1:
The patent introduces a retrieval bag as an intermediary device between the tissue and the peritoneal cavity. The bag contains the tissue during extraction and manipulation, acting as a barrier that prevents harmful materials from dispersing into the cavity while still allowing the surgeon to access and remove the tissue through the bag's opening
Solution Approach 2:
The retrieval bag is constructed from flexible material that can be collapsed for insertion through a small incision and then expanded to provide a working space. This flexible shell contains the tissue and fluids within its boundaries, preventing their release into the peritoneal cavity while allowing manipulation of the contents
2Ease of operation
If a large incision is made to insert the retrieval bag, then the bag can be easily deployed, but the incision size increases and recovery time extends
Solution Approach 1:
The retrieval bag is designed with dynamic properties - it can be collapsed into a compact state for insertion through a small incision, then expanded or opened within the body cavity to provide a large working space. This dynamic transformation allows the bag to pass through a small opening while still providing ample room for tissue manipulation
Solution Approach 2:
The retrieval bag is folded or collapsed into a compact configuration that can be nested within itself or within the incision site, allowing it to pass through a small opening. Once positioned, the bag is deployed or unfolded to provide the necessary working space, effectively nesting a large structure within a small delivery pathway
3Ease of operation
If the cuff is made rigid to maintain open configuration, then tissue receiving is improved, but the device cannot be folded for insertion through small incisions
Solution Approach 1:
The cuff is designed with non-uniform properties - certain portions are made more flexible than others. This allows the cuff to be folded or collapsed in specific areas for insertion while maintaining structural integrity and the ability to open and maintain an open configuration in the deployment area for effective tissue receiving
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 effectively isolates and extracts tissue while preventing the dissemination of potentially harmful materials, enhancing the safety and efficacy of laparoscopic procedures by maintaining tissue and fluids within the bag during manipulation and removal.
Implementation Method 1
the cuff being biased into the open configuration
Implementation Method 2
The bag is inserted through a small incision, inflated to create additional working and viewing space
Data Source
AI summary
An artificial pneumoperitoneum bag device may include an inflatable bag having an opening at an end of the bag. The bag device may also include an indicator including at least one repeating pattern on a wall of the bag. The pattern may extend across at least one side of the bag.