Anastomosis Connector Ring and Pin Design for Vessel Attachment
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Solution Overview
Problem
Current side-to-side anastomosis procedures in medical bypass surgery are time-consuming and lack reliability, with existing connector devices not meeting safety and efficiency standards.
Innovation Solution
An anastomosis connector comprising a ring and two pins, where the pins are moveable to form an opened jaw for easy attachment to a graft vessel, providing a secure and leak-free connection between vessels, and can be attached using sutures, adhesive, or piercing through the vessel wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional suturing method is used to make STS anastomosis, then the connection is reliable, but the operation time is long and blood spillage occurs
Solution Approach 1:
The connector device is pre-assembled with the graft vessel before the surgical procedure. The ring is positioned and secured to the graft vessel in advance, and the pins are pre-positioned but not yet engaged with the recipient vessel. This preliminary preparation allows the actual anastomosis connection to be completed quickly during surgery by simply engaging the pre-positioned pins with the recipient vessel, thereby reducing operation time while maintaining connection reliability.
2Reliability
If traditional suturing method is used to make STS anastomosis, then the connection is reliable, but blood spillage from recipient vessel occurs
Solution Approach 1:
The anastomosis procedure is divided into separate steps: first, the connector with ring and pins is attached to the graft vessel; second, the pins are engaged with the recipient vessel to create the connection. This segmentation allows the graft vessel to be prepared and connected independently before establishing the final connection to the recipient vessel, enabling better control and reducing blood spillage during the critical connection phase.
3Productivity
If connector devices are used to simplify STS anastomosis, then operation time is reduced, but safety and reliability are not sufficient
Solution Approach 1:
The connector employs a ring structure that conforms to the curved surface of the graft vessel, providing stable attachment. The circular geometry of the ring distributes forces evenly around the vessel circumference, enhancing both the speed of attachment and the reliability of the connection. This curved design allows for quick positioning while maintaining secure, safe attachment during the simplified procedure.
Data Source
AI summary
The invention relates to an assembly comprising on the one hand a graft vessel and on the other hand an anastomosis connector. The connector comprises a ring and two pins. Each pin has a free end and a fixed end connected to the ring. The pins extend, viewed from the fixed end towards the free end, next to and set apart from each other. Each pin has an overlap section where the pin, viewed in axial direction of the ring, overlaps the plane bounded by the outer contour of the ring. The axial axis of the ring extends transverse to the wall of the graft vessel. The connector is attached to the graft vessel and the ring lies, with its full circumference, against the wall of the graft vessel. The invention further relates to a method of providing such an assembly and a method of attaching such an assembly to a recipient vessel.