Intestinal Surgical Anchor With Vacuum-Controlled 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 variability, risking untimely migration or prolonged anchoring that can cause complications.
Innovation Solution
A surgical device with a semi-rigid, multiply-perforated anchor element and a leakproof inner sheath, coupled with an injection-suction tube, allows controlled variation of the anchor's diameter and suction effect to manage its stay and migration by adjusting vacuum in the suction chamber.
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 implanted and anchored in the intestine, but the duration of anchoring and migration becomes unpredictable
Solution Approach 1:
The anchor element incorporates a可控 diameter variation mechanism that allows the first wall's diameter to be adjusted dynamically between expanded and retracted states. This dynamic control enables the device to maintain predictable anchoring duration by actively managing the expansion state, resolving the contradiction between ease of implantation and reliability of anchoring duration.
Solution Approach 2:
The device utilizes controlled changes in the diameter parameter of the first wall through the可控 variation mechanism. By regulating the diameter between minimum and maximum values, the system achieves predictable anchoring behavior while maintaining the radial elasticity needed for implantation, thus resolving the reliability issue.
2Strength
If the anchor element remains expanded to ensure anchoring, then anchoring strength is maintained, but migration control becomes difficult
Solution Approach 1:
The可控 diameter variation mechanism allows dynamic adjustment of the first wall's expansion state. When strong anchoring is needed, the wall is expanded; when migration control is required, the diameter can be reduced. This dynamic capability resolves the contradiction between maintaining anchoring strength and enabling migration control.
3Reliability
If the anchor element is made permanently anchored, then protection is ensured, but timely migration and elimination become impossible
Solution Approach 1:
The device employs a可控 diameter variation mechanism that enables transition between anchored and migratory states. The first wall can be expanded to provide reliable protection when needed, then retracted to enable timely migration and elimination, thus resolving the contradiction between protection reliability and controllable anchoring duration.
Solution Approach 2:
The anchor element undergoes periodic state changes between expanded (anchored) and retracted (migrating) phases. This periodic action allows the device to provide protection during anchored phases and migrate during retracted phases, achieving both reliable protection and timely elimination.
4Object-affected harmful factors
If the anchor element migrates quickly to avoid complications, then protection period is reduced, but complication risks increase
Solution Approach 1:
The可控 diameter variation mechanism provides dynamic control over migration speed. By adjusting the first wall's diameter, the system can slow down migration to maintain adequate protection period while preventing untimely migration complications, thus resolving the contradiction between complication risk and protection period.
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 a desired period, slows down migration, and prevents complications like fistula formation or intestinal occlusion.
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.