Intestinal Anchor Sheath and Suction Control for Timed Migration
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Solution Overview
Problem
Existing surgical devices for anchoring in the intestine lack control over the duration of their stay and migration, leading to unpredictable behavior due to factors like intestinal activity, friction, and post-operative ileus duration, which can result in premature migration or prolonged anchoring, increasing the risk of complications such as fistulas and intestinal occlusion.
Innovation Solution
A surgical device with a semi-rigid, multiply-perforated anchor element and a leakproof inner sheath, coupled to an injection-suction tube, allows controlled variation of the anchor's diameter and suction effect to manage migration and anchoring by adjusting vacuum and pressure, using materials like polyethylene or polypropylene for the tube and elastomer gaskets for sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the anchor element is made radially elastic to enable compression and expansion, then the device can be inserted and anchored in the intestine, but the duration of anchoring becomes unpredictable due to intestinal activity and friction
Solution Approach 1:
The anchor element incorporates a可控 diameter mechanism that allows the outer diameter to be dynamically adjusted between a compressed state (for insertion) and an expanded state (for anchoring). This dynamic adjustment enables control over the anchoring duration by modulating the expansion force and diameter, thereby resolving the unpredictability caused by intestinal activity and friction.
Solution Approach 2:
The device changes the physical parameter of the anchor element's outer diameter in a controlled manner. By varying the diameter between compressed and expanded states, the device can control the anchoring duration - a larger expanded diameter provides stronger anchoring for longer duration, while a smaller diameter allows easier migration. This parameter control directly addresses the unpredictability of anchoring duration.
2Reliability
If the anchor element remains anchored for a prolonged period to ensure healing, then the risk of fistulas and intestinal occlusion increases
Solution Approach 1:
The可控 diameter mechanism allows the anchor element to be expanded to a larger diameter for prolonged anchoring during the critical healing period, then dynamically reduced to a smaller diameter to facilitate timely migration and removal. This dynamic adjustment enables precise control over the anchoring duration, ensuring sufficient time for healing while minimizing the risk of complications such as fistulas and intestinal occlusion.
Solution Approach 2:
The device implements a periodic action pattern where the anchor element is maintained in an expanded state for a predetermined healing period, then transitions to a compressed state for migration. This periodic cycle of expansion and compression allows controlled anchoring duration that balances healing requirements with complication prevention.
3Reliability
If the anchor element is made with a larger diameter to prevent migration, then the risk of intestinal occlusion and trauma increases
Solution Approach 1:
The anchor element dynamically adjusts its diameter based on the operational phase: it expands to a larger diameter when anchoring stability is needed (preventing migration), and compresses to a smaller diameter when migration is desired (reducing trauma and occlusion risk). This dynamic diameter control resolves the contradiction between anchoring stability and harm prevention.
Solution Approach 2:
The device controls the outer diameter parameter of the anchor element, varying it between a first outer diameter (larger, for stability) and a second outer diameter (smaller, for migration). By adjusting this parameter in response to healing progress, the device maintains anchoring stability when needed while minimizing intestinal trauma and occlusion risk during migration.
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
Enables precise control over the anchor's behavior in the intestine, ensuring it remains anchored for the desired period, preventing untimely migration and reducing complications by modulating suction force, thus enhancing patient recovery and reducing the risk of fistulas and intestinal damage.
Implementation Method 1
said anchor element being made of a material giving it radial elasticity properties such that it can be compressed radially into a retracted position and can adopt a said maximally radially expanded position after the radial compression has been released
Data Source
AI summary
A surgical anchor device for being anchored on the mucous membrane of the inner wall of the intestine, the device having a temporary anchor element presenting anchoring that can be modified in a controlled manner and having a first substantially cylindrical multiply-perforated wall presenting properties of radial elasticity whereby the first wall presents an outer diameter that can be varied in controlled manner, wherein a portion of the inner surface of the first wall is lined with an independent leakproof inner sheath having only its longitudinal ends fastened to the anchor element to define a suction chamber between the inner sheath and the first wall, the temporary anchor element being coupled to a flexible or semi-rigid tube extending outside the anchor element, an open end of the injection-suction tube opening out into the suction chamber enabling air to be injected into or sucked out from the suction chamber.