Percutaneous Abdominal Implant Axial Gap Design
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Solution Overview
Problem
Existing ostomy implants face challenges with weak tissue bonding due to peristaltic movements, leading to potential rupture and delayed healing, as well as high risks of infection and inflammation due to bacterial contamination from the exterior surface.
Innovation Solution
The implant features an axial gap between its exterior and interior tubular sections, connected by a rigid ingrowth mesh, which prevents bacterial transfer and facilitates tissue ingrowth, reducing the risk of infection and inflammation by maintaining a clean interior surface during healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the exterior tubular section and interior section are connected directly by merging them, then the implant structure is simple, but bacterial contamination can spread along the exterior surface to the interior section, causing infection and inflammation
Solution Approach 1:
The implant is divided into two separate sections: an exterior tubular section and an interior section, which are connected by distance means rather than merging directly. This segmentation creates an axial gap that prevents bacterial contamination from spreading along the exterior surface to the interior section, while maintaining structural integrity through the connecting distance means.
2Adaptability or versatility
If the flexible sleeve is used to allow peristaltic movements, then the implant can accommodate intestinal movements, but the tissue bond becomes weak and may rupture during healing
Solution Approach 1:
The implant separates the exterior tubular section (which accommodates peristaltic movements) from the interior section (which provides stable anchorage). The distance means maintains appropriate spacing between these sections, allowing the exterior section to move with peristalsis while the interior section remains firmly anchored to the abdominal wall, thus preventing tissue bond rupture.
3Ease of manufacture
If the exterior surface provides a propagating surface for bacteria, then the implant can be easily manufactured, but it creates a microbiological access route for faecal bacteria along the exterior surface
Solution Approach 1:
The harmful function of the exterior surface (serving as a propagating surface for bacteria) is extracted and separated from the interior section. The axial gap created by the distance means removes the direct connection between the exterior and interior sections, eliminating the microbiological access route while preserving the ease of manufacturing the exterior tubular section.
4Object-affected harmful factors
If the axial gap is introduced between exterior and interior sections, then bacterial transfer is prevented, but the implant structure becomes more complex with additional distance means
Solution Approach 1:
Distance means are introduced as intermediary elements between the exterior tubular section and interior section to maintain the axial gap. These distance means serve as mediators that prevent bacterial transfer while providing a simple and straightforward structural connection, avoiding the need for complex merging mechanisms.
Data Source
AI summary
An implant for percutaneous implantation through the abdominal wall for encircling and engaging an externalized length of a body duct of a human or animal patient. The implant has an exterior tubular section defined by an circumferential exterior wall at least a part of which is adapted to protrude outwardly from the abdominal wall with a free end for mounting of a detachable device, an interior section defined by an circumferential interior wall adapted to extend through the abdominal wall and inside the patient for internal fixation of the implant, wherein the exterior tubular section and the interior section have a common axis A. The circumferential exterior wall of the exterior tubular section and the circumferential interior wall of the interior section are arranged axially spaced apart at a distance D from each other to provide an axial gap between opposing free ends of the exterior tubular section and the interior section, with the exterior tubular section and interior section being connected inside the sections.