Vessel Clip Apparatus for Non-Occlusive Anastomosis
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Solution Overview
Problem
Current methods for attaching body vessels during surgery, such as anastomosis, face challenges in creating blood-tight and mechanically stable connections without occluding the recipient vessel, which is particularly problematic in sensitive areas like the brain and heart, and often result in complications like thrombogenesis, leakage, or aneurysm formation due to misalignment, tension issues, or the use of foreign materials.
Innovation Solution
A clip apparatus with rings or attachment features that engage vessel ends or walls, allowing for end-to-end, side-to-side, or side-to-end connections without occluding the recipient vessel, using biasing mechanisms and attachment points to maintain vessel contact and stability, potentially reducing the need for additional fasteners like sutures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adhesives are used to join body tissues, then ease of application is improved, but mechanical safety and connection stability deteriorate
Solution Approach 1:
The adhesive application device segments the adhesive delivery system into multiple controlled dispensing points, allowing precise placement of adhesive at specific locations on the tissue surfaces. This segmentation enables better control over adhesive distribution while maintaining ease of application, and when combined with additional mechanical fastening elements, achieves both ease of application and mechanical safety.
2Reliability
If occlusion is used during anastomosis, then connection stability is improved, but blood flow and patient safety deteriorate
Solution Approach 1:
The device applies adhesive and mechanical fasteners to the tissue surfaces before the vessels are fully joined, creating preliminary stabilization that maintains connection stability throughout the procedure without requiring prolonged occlusion of the recipient vessel. This preliminary action allows blood flow to be maintained while still achieving secure connection.
3Reliability
If traditional suturing is used, then connection reliability is improved, but surgical time and complexity increase
Solution Approach 1:
The invention replaces the manual suturing mechanical system with an automated adhesive dispensing and fastening system. The adhesive application device mechanically applies adhesive and secures tissues using controlled dispensing mechanisms, eliminating the need for time-consuming manual needle handling and knot tying, thereby reducing surgical time while maintaining connection reliability.
4Manufacturing precision
If precise alignment is achieved, then connection quality is improved, but surgical skill requirement and time increase
Solution Approach 1:
The adhesive acts as an intermediary substance between the tissue surfaces, filling minor misalignments and gaps that would otherwise require perfect precision. This intermediary material allows for successful connections even when alignment is not perfectly precise, reducing the skill level and time required while maintaining connection quality.
Data Source
AI summary
Various embodiments of the present disclosure include an apparatus comprising a clip which includes a first side including a first ring configured to pass over an end of a first vessel, the first ring configured to engage the first side with the first vessel, and a second side coupled to the first side, the second side including a second ring configured to pass over an end of a second vessel, the second ring being configured to engage the second side with the second vessel. The first and second sides, when in a closed position, are configured to maintain the first and second vessels in substantially end-to-end contact.