GI Prosthesis Anchoring With Anti-Migration Tethered Restraint
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Solution Overview
Problem
Existing bariatric surgical procedures face challenges in safely anchoring gastrointestinal implants within the dynamic environment of the gastrointestinal tract due to intermittent peristaltic motion, leading to potential tissue necrosis, erosion, and increased risk of bacterial translocation and infection.
Innovation Solution
A gastrointestinal implant system with an anti-migration anchor featuring an elongate element and retention features that span the neck portion of the implant, securing it to the tissue without penetrating the stomach or small intestine wall, using a suture tether to maintain the implant's geometry and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If active fixation means such as barbs penetrating the wall are used to secure implants, then the implant anchoring strength is improved, but the risk of tissue necrosis and erosion increases
Solution Approach 1:
The patent introduces a suture anchor as an intermediary component that bridges the implant and the tissue without direct penetration. The anchor comprises a body with a first end engaging the implant and a second end extending through the tissue to engage underlying structures, thereby mediating the connection while distributing mechanical loads and eliminating the need for penetrating barbs that cause tissue damage.
Solution Approach 2:
The fixation system is segmented into distinct functional components: the suture anchor body, the suture material, and the engagement structures. This segmentation allows each component to perform its specific function optimally - the anchor body provides structural support and tissue engagement, while the suture material provides flexible fixation without requiring tissue penetration.
2Stability of the object's composition
If penetrating fixation means are used to secure implants, then the implant stability is improved, but the risk of bacterial translocation and infection increases
Solution Approach 1:
The suture anchor serves as a non-penetrating intermediary that achieves implant stability through alternative mechanisms. Instead of creating direct pathways through the tissue wall, the anchor engages underlying muscular or connective structures through controlled tissue displacement, thereby maintaining stability while preserving the integrity of the gastrointestinal tract lining and preventing bacterial translocation.
3Reliability
If the implant is secured with sutures and staples, then the anchoring is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple fixation functions into a single integrated suture anchor component. The anchor body combines the functions of tissue engagement, load distribution, and implant securing that would otherwise require separate sutures, staples, and anchoring mechanisms. This consolidation reduces device complexity while maintaining anchoring reliability through a unified design.
Data Source
AI summary
Systems and methods for anchoring and restraining gastrointestinal prostheses are disclosed. In various examples, the systems and methods include securing a gastrointestinal device within a patient's anatomy by extending an anti-migration anchor through a plurality of portions of the gastrointestinal device to couple together the plurality of portions of the gastrointestinal device. In some examples, the anti-migration anchor extends through tissue situated between the plurality of portions of the gastrointestinal device.