Magnetic Sphincter Beads with Bioabsorbable Coating for Tissue Remodeling
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Solution Overview
Problem
Current treatments for conditions like GERD, which result from a malfunctioning lower esophageal sphincter, often require invasive surgical procedures and do not effectively prevent reflux while allowing for normal food passage, as they either fail to maintain the sphincter's occluded state or cause tissue erosion.
Innovation Solution
An implantable sphincter assistance device comprising a series of beads with rare-earth permanent magnets and a bioabsorbable casing or scaffold that surrounds the esophagus, allowing the sphincter to maintain a closed configuration while accommodating food passage and preventing tissue erosion through controlled remodeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surgical procedures (fundoplication) are used to treat GERD, then reflux prevention is improved, but tissue erosion and invasive surgery risks worsen
Solution Approach 1:
A non-adhering coating layer is introduced as an intermediary between the implantable sphincter device and the esophageal tissue. This coating prevents direct contact and potential erosion while allowing the device to maintain sphincter function. The coating acts as a protective mediator that eliminates the harmful tissue erosion effect while preserving reflux prevention capabilities.
Solution Approach 2:
The patent employs a bioabsorbable coating material that degrades over time after serving its protective function. This short-living protective layer provides temporary protection during the critical healing period, then naturally disappears without requiring removal or causing long-term interference, reducing both invasive intervention needs and tissue erosion risks.
2Reliability
If the sphincter is kept in a closed state to prevent reflux, then reflux prevention is improved, but food passage capability worsens
Solution Approach 1:
The implantable sphincter device incorporates dynamic control mechanisms that allow the sphincter to transition between closed and open states. The device can maintain a closed configuration to prevent reflux during normal conditions, but can be opened to allow food passage when needed. This dynamic adjustability resolves the contradiction by making the system adaptive rather than static.
Solution Approach 2:
The device includes sensors and control systems that monitor esophageal conditions and automatically adjust sphincter opening/closing based on detected needs. When food presence is detected, the sphincter opens to allow passage; when reflux is detected or during normal conditions, it remains closed. This feedback-controlled operation enables automatic coordination of reflux prevention and food passage without requiring constant manual intervention.
3Reliability
If invasive surgical procedures are performed to repair sphincter malfunction, then sphincter function is improved, but surgical complexity and recovery time worsen
Solution Approach 1:
The patent replaces complex mechanical surgical procedures (suturing, tissue rearrangement in fundoplication) with an implantable device that uses magnetic fields and electronic control to achieve sphincter augmentation. This substitution of mechanical surgical manipulation with a controllable implantable device reduces surgical complexity while maintaining or improving sphincter function reliability.
Solution Approach 2:
The implantable sphincter device integrates multiple functions into a single device: it provides mechanical support to augment the sphincter, incorporates sensors to detect reflux and food presence, includes control systems to regulate opening/closing, and uses a bioabsorbable coating for tissue protection. This multi-functionality consolidates what would otherwise require multiple separate surgical interventions into a single procedure, reducing overall surgical complexity.
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 maintains the lower esophageal sphincter in a closed state to prevent reflux while allowing food to pass, reducing the need for invasive surgery and minimizing tissue erosion by promoting scar tissue formation and controlled tissue remodeling.
Implementation Method 1
An implantable sphincter assistance device may include a series of beads with rare-earth permanent magnets
Implementation Method 2
The implantable sphincter assistance device may include a series of beads with rare-earth permanent magnets and a bioabsorbable casing or scaffold that surrounds the esophagus... promoting scar tissue formation and controlled tissue remodeling
Data Source
AI summary
An implantable sphincter assistance device is configured to surround an exterior wall of an esophagus. The implantable sphincter assistance device includes a plurality of beads, at least one connector, and secondary material. Each of the beads has an exterior surface. The connector is configured to serially connect the beads to form a ring. The secondary material is configured to be disposed between the exterior surface of at least one of the beads and the exterior wall of the esophagus. The secondary material is configured to control remodeling of tissue surrounding the exterior wall of the esophagus.