Multi-Opening Tissue Isolator for Laparoscopic Morcellation
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Solution Overview
Problem
Existing surgical tissue morcellation techniques face challenges such as tissue spillage, leakage, and difficulty in inserting and removing bags from the abdomen due to constraints in bag design, shape, and material, limiting the size of tissue that can be handled and requiring specialized skills.
Innovation Solution
A tissue isolator with two or more openings designed for laparoscopic surgery, featuring a unique shape and flexible elements to prevent leakage, accommodate larger tissues, and facilitate easy insertion and removal, along with sealing and closure mechanisms to minimize spillage and improve usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single opening bag is used for tissue removal, then the bag structure is simple, but tissue spillage and leakage occur during morcellation
Solution Approach 1:
The bag is divided into multiple sections with multiple openings instead of a single opening design. This segmentation allows different portions of the bag to serve specific functions (e.g., insertion opening, extraction opening, morcellation opening), preventing tissue spillage while maintaining manageable complexity
Solution Approach 2:
A morcellation device is introduced as an intermediary tool that operates within the bag through one opening while tissue is extracted through another. This intermediary mechanism enables controlled tissue fragmentation and removal without direct manual manipulation that could cause spillage
2Ease of operation
If the bag size is reduced for easier insertion, then insertion becomes easier, but the size of tissue that can be inserted is limited
Solution Approach 1:
The bag is designed with dynamic expansion capability, allowing it to be compact during insertion and then expand within the body cavity to accommodate larger tissue volumes. This dynamic transformation resolves the contradiction between ease of insertion and tissue capacity
Solution Approach 2:
The bag is folded or compressed into a compact form that can be inserted through a small incision, then deployed to expand to its full size within the body cavity, similar to a nested doll structure that transitions from compact to expanded state
3Ease of operation
If piercing of the bag is done by trocar to create a port, then access is provided, but leakage of blood and tissue occurs during removal
Solution Approach 1:
The bag is pre-assembled with the trocar port and sealing mechanism in place before insertion. The sealing mechanism is pre-positioned to automatically seal around the trocar, preventing leakage during subsequent operations and removal without requiring additional piercing actions
4Device complexity
If bags with small ports are used, then the bag structure is compact, but the location of the port becomes difficult and tissue size is limited
Solution Approach 1:
The bag features asymmetric design with openings of different sizes positioned at strategic locations. The larger opening facilitates easy access and instrument insertion, while the overall bag structure remains compact through optimized asymmetric geometry rather than uniform small ports
Data Source
AI summary
A biocompatible tissue isolator is used to isolate and extract tissue during a surgical procedure. A method of using the tissue isolator for isolating and extracting morcellated tissue during the surgery.