Mounting Tool for Flexible Anastomotic Ring
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Solution Overview
Problem
Current anastomotic stapling techniques face challenges with blood circulation and healing issues during anastomosis, leading to complications like leakage and stenosis, particularly in the lower part of the colon and rectum, where access is limited, resulting in the need for temporary stomas and repeated dilatations.
Innovation Solution
A mounting tool with a receiving portion and handle, featuring an elongated tubular sheet element and a longitudinally displaceable tubular displacement element, allows for improved access and flexibility by receiving and positioning a flexible ring-shaped part of an anastomotic device on a rigid part, facilitating better control and reduced stress on the sphincter during anastomosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circular mechanical staplers are used for anastomosis, then the connection of tissue edges is achieved, but blood circulation is compromised and healing issues occur
Solution Approach 1:
The anastomotic device is divided into a rigid part and a flexible part that can be separately positioned and then connected. The flexible part is arranged circumferentially of the rigid part to maintain tissue blood circulation while achieving secure connection, resolving the contradiction between reliable connection and blood circulation preservation.
Solution Approach 2:
Instead of using a traditional rigid stapler that compresses tissue, the invention uses a flexible part that can adapt to tissue contours and a mounting tool that facilitates gentle positioning. This inverted approach prioritizes tissue health while achieving connection reliability.
2Reliability
If staplers create a rigid opening, then liquid proof connection is achieved, but lumen cross section is reduced causing stenosis
Solution Approach 1:
The flexible part of the anastomotic device is made from elastomeric material that can conform to the lumen shape while maintaining liquid proof connection. This flexible structure prevents stenosis by adapting to the natural lumen cross section rather than imposing a rigid geometry.
3Ease of operation
If access to lower part of colon and rectum is limited, then surgical intervention is difficult, but temporary stoma is required causing patient inconvenience
Solution Approach 1:
The mounting tool acts as an intermediary device that facilitates the positioning of the anastomotic device in difficult-to-reach areas of the lower colon and rectum. By providing a specialized mounting mechanism, the invention enables surgical access to previously difficult areas, potentially eliminating the need for temporary stomas and improving patient quality of life.
Data Source
AI summary
A mounting tool for mounting a flexible ring-shaped part of an anastomotic device on a rigid part of an anstomotic device is provided. The tool comprises a receiving portion (104) in a distal end of the mounting tool for receiving the flexible part thereat and a handle portion (103) proximally of said receiving portion (104). Said receiving portion (104) comprises an elongated tubular sheet element (101), and a tubular displacement element (201), arranged within the sheet element (101) to be longitudinally displaceable in relation to the sheet element (101), such that a shelf (401) is obtained circumferentially of the tubular displacement element (106) and distally of the sheet element (101). The shelf (401) is configured to receive the flexible part. A mounting tool for receiving a flexible ring-shaped part of an anastomotic device on a rigid part of an anstomotic device is also provided. This tool comprises a longitudinal guiding element (801) for passing through a central passage or lumen in a mounting tool according to above, and a connection plate (802) arranged distally on the guiding element (801). The connection plate (802) is configured to connect to a rigid part of an anstomotic device. A kit is also provided.