Percutaneous Ostomy Implant with Ingrowth Mesh
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Solution Overview
Problem
Conventional continent ileostomy procedures are complex and prone to complications due to dysfunction of the continence nipple valve, deterring surgeons from adopting them, and existing percutaneous ostomy implants fail to prevent bacterial infection by isolating the epidermis from serosal tissue.
Innovation Solution
A percutaneous ostomy implant with a cylindrical ingrowth mesh that allows direct attachment of the epidermis to serosal tissue, reducing the risk of bacterial infection and providing a stable, continent ostomy system by using a cylindrical part and circular flange attached to the ingrowth mesh, made from commercially pure titanium with a surface treatment for optimal topographical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional continent ileostomy with nipple valve is used, then continent ostomy function is achieved, but device complexity and complication rate increase
Solution Approach 1:
The invention extracts and eliminates the complex nipple valve mechanism from the continent ileostomy system. Instead of creating a nipple valve from bowel tissue, the patent uses a simple percutaneous implant with a flanged body that provides continence through a different mechanism - allowing intermittent catheterization without requiring complex valvular structures, thereby reducing surgical complexity while maintaining continent function
Solution Approach 2:
The invention inverts the traditional approach to continent ileostomy. Rather than creating continence through an internal nipple valve mechanism within the bowel, the patent places a solid-walled implant through the abdominal wall that provides continence externally, with the bowel reservoir opening directly to the implant opening. This reversal simplifies the internal bowel anatomy while achieving the same continence goal
2Stability of the object's composition
If solid-walled cylindrical implant is used, then structural stability is provided, but tissue ingrowth and vascularisation are limited
Solution Approach 1:
The invention applies local quality by providing different structural characteristics in different regions of the implant. The upper portion has a solid-walled cylindrical structure for stability and support, while the lower portion features a flanged body with numerous apertures that promote tissue ingrowth and vascularisation. This localized differentiation allows the implant to simultaneously achieve structural stability and reliable tissue integration
3Device complexity
If conventional ileostomy with bag connection is used, then simple construction is achieved, but quality of life and continence function are reduced
Solution Approach 1:
The invention introduces an intermediary structure - the percutaneous implant with its flanged body and aperture pattern - that mediates between the simple bag connection system and the need for continence function. The implant provides a stable, well-vascularized connection point that allows for intermittent catheterization and continent function while maintaining relatively simple overall system construction
Data Source
AI summary
A percutaneous ostomy implant for implantation into the abdominal wall of a patient. The implant has a cylindrical part for mounting an external detachable device thereto, an ingrowth mesh and a circular flange for anchoring the implant. The cylindrical part and circular flange are attached to opposite ends of the ingrowth mesh. The ingrowth mesh is arranged such that when the implant is implanted in the abdominal wall of a patient, the epidermis meets the ingrowth mesh and is able to attach therethrough directly to serosal tissue of a bowel segment inside the implant.