Bioabsorbable Tissue Inversion for Minimally Invasive Resection
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Solution Overview
Problem
Current tissue resection methods either require invasive laparotomy, causing significant patient stress, or are limited by the size of the lesionable area when using endoscopes, necessitating a less invasive and more extensive resection technique.
Innovation Solution
A method involving a bioabsorbable tissue pushing tool introduced into the abdominal cavity to invert and resect hollow organ tissue, allowing for wider resection with reduced patient invasiveness, using a bioabsorbable member to facilitate tissue inversion and stapling or anastomosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laparotomy method is used for tissue resection, then resection range is wide and easy to perform, but patient stress is large and invasiveness is high
Solution Approach 1:
The stomach wall is inverted inside the stomach cavity by introducing a inverting member from the abdominal cavity. This inversion transforms the hard-to-reach dorsal side of the stomach into an accessible position, enabling wide resection range through natural orifice (mouth) without requiring large abdominal incisions, thus reducing patient stress while maintaining adaptability.
Solution Approach 2:
Multiple medical instruments are nested within each other: the inverting member is introduced into the stomach cavity, the stomach wall is inverted around it, and the resecting member is then introduced through the same access point. This nesting approach enables complex procedures through minimal access points, reducing invasiveness while achieving wide resection capability.
2Object-affected harmful factors
If endoscope method is used for tissue resection, then patient stress is small and invasiveness is low, but resection size is limited
Solution Approach 1:
By inverting the stomach wall inside the stomach cavity, the procedure transforms the anatomical configuration to allow access to larger areas of the stomach through the natural orifice. This enables resection sizes that exceed conventional endoscope limitations while still using minimal access points, thus maintaining low patient stress.
Solution Approach 2:
The inversion technique adds a spatial dimension transformation, converting the three-dimensional anatomical constraints into a configuration where larger surface areas become accessible through the same orifice. This dimensional change enables larger resection sizes without increasing invasiveness.
3Ease of operation
If stomach wall is locked to abdominal wall for inversion, then tissue can be inverted successfully, but operation difficulty increases significantly
Solution Approach 1:
A bioabsorbable member is introduced as an intermediary tool to facilitate the locking and inversion process. This member temporarily anchors the stomach wall to the abdominal wall, enabling controlled inversion without requiring complex direct suturing techniques, thus reducing operational difficulty while achieving successful tissue inversion.
Solution Approach 2:
The bioabsorbable member used for locking is designed as a temporary, disposable instrument that degrades after serving its purpose. This eliminates the need for permanent implants or complex removal procedures, simplifying the overall operation while enabling effective tissue inversion and locking.
Data Source
AI summary
A tissue resection method of resecting a portion of a hollow organ includes a first step of specifying a position and a range of a resection target tissue from the inside of the hollow organ and showing the position and the range in a visually recognizable manner from the inside of a body cavity; a second step of bringing a bioabsorbable member introduced into the body cavity into contact with the resection target tissue and pressing the resection target tissue, thereby inverting the resection target tissue to the inside of the hollow organ; and a third step of resecting the inverted resection target tissue over all layers from the inside of the hollow organ and performing anastomosis of a hole formed in the hollow organ from the inside of the hollow organ.