Circular Stapling Device for Reinforced Stoma Creation
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Solution Overview
Problem
Existing ostomy procedures face complications such as suture granuloma, suture give away, leaks, and parastomal herniation due to manual stitching of the colon, which can lead to reoperation and increased risk of complications.
Innovation Solution
A circular stapling device and method involving a first tool assembly with an anvil and staple cartridge to create a circular incision in the rectus sheath, followed by securing a vessel portion and using a second tool assembly to attach a stomal sleeve to the skin, minimizing manual suturing and reinforcing the incision with buttress materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual stitching is used to create stoma, then the procedure can be performed with simple equipment, but complications such as suture granuloma, suture give away, leaks, and parastomal herniation occur frequently
Solution Approach 1:
The patent replaces manual stitching (mechanical suture system) with a stapling device that uses staples and a circular cutting mechanism. This substitution eliminates suture-related complications while providing more reliable tissue approximation and closure, directly addressing the reliability issue without requiring complex manual surgical techniques
Solution Approach 2:
The invention changes the fundamental parameter of tissue approximation from suture tension to staple compression and mechanical closure. By altering the mechanism from chemical/biological suture material to mechanical stapling, the system achieves more consistent and reliable stoma creation while reducing complication rates
2Reliability
If circular incision with reinforcement is created, then herniation and leaks are reduced, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions (circular incision creation, tissue approximation, reinforcement application, and closure) into a single integrated stapling device. This merging of functions achieves reliable stoma creation with reinforcement while managing device complexity through functional integration rather than separate manual steps
Solution Approach 2:
The stapling device is designed as a multi-functional tool that performs incision, approximation, reinforcement, and closure operations. This universality allows a single device to accomplish multiple tasks that would otherwise require separate instruments, balancing reliability improvement with acceptable device complexity
Data Source
AI summary
A circular stapling device is described that is particularly suited for creating stomas. The circular stapling device includes two tool assemblies. The first tool assembly is adapted to create a reinforced incision in tissue, e.g., the rectus sheath, through which a vessel portion, e.g., colon, small intestine, etc. can be pulled through during a surgical procedure. The second tool assembly is adapted to attach a stomal sleeve within the vessel portion such that the stomal sleeve extends from the stoma.