Circular Anastomosis Stapler for NOTES Invasiveness Reduction
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Solution Overview
Problem
Conventional surgical methods for resecting diseased or defective sites in hollow organs require large-scale surgery and are invasive, time-consuming, and costly, with manual operations prolonging treatment periods and increasing invasiveness.
Innovation Solution
A circular anastomosis surgical stapler system for Natural Orifice Transluminal Endoscopic Surgery (NOTES) that includes an anvil assembly with a trocar, a head assembly with a circular cutter and annular staples, a flexible support shaft, and a coupling mechanism, allowing for remote-controlled operation and wireless control, enabling minimally invasive procedures by inserting instruments through natural orifices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional surgical methods are used to resect diseased sites in hollow organs, then the diseased site can be removed, but the procedure requires large-scale abdominal incisions and manual handling, increasing invasiveness and operating time
Solution Approach 1:
The surgical system is divided into separate functional modules: anvil assembly for tissue approximation, head assembly for cutting and stapling, and a flexible support shaft for transmission. This segmentation allows each component to be optimized independently and enables minimally invasive insertion through natural orifices while maintaining complex surgical functionality.
Solution Approach 2:
A flexible support shaft acts as an intermediary element, transmitting mechanical forces and controlling the positioning of surgical tools through the body's natural orifices. This intermediary enables remote operation without requiring direct manual access to the surgical site, thereby reducing invasiveness and operating time.
2Ease of operation
If manual handling of surgical instruments is used, then precise control is achieved, but the procedure becomes time-consuming and increases invasiveness
Solution Approach 1:
Manual mechanical operation is replaced with an automated stapling and cutting mechanism integrated into the head assembly. The system uses motorized staple deployment and cutter activation, eliminating time-consuming manual steps while maintaining precision through controlled mechanical actuation via the flexible support shaft.
Solution Approach 2:
The anvil assembly automatically approximates and secures tissue edges through its mechanical design, and the head assembly self-regulates the cutting and stapling process. This self-service capability reduces the need for continuous manual adjustment and accelerates the surgical procedure while maintaining high operational efficiency.
3Reliability
If conventional stapling devices are used, then tissue sealing is achieved, but the procedure requires external access and large incisions
Solution Approach 1:
The surgical system employs a nested configuration where the anvil assembly and head assembly can be inserted through the flexible support shaft through natural orifices. The anvil assembly nests within the head assembly during storage and transport, enabling minimally invasive access while maintaining the reliability of internal tissue sealing through controlled stapling and cutting.
Data Source
AI summary
A system and method for use in NOTES is provided for reducing surgical invasiveness. An insertion body that is connected by an anvil assembly and joined to a thin wire guide or electric guide wire, is inserted via a natural orifice into a hollow organ so as to incise and remove a diseased or defective site from the hollow organ by using a pair of or front-end/rear-end linear cutters of a linear cutting/stapling device or linear stapler, after which the two cut ends of the tract are anastomosed and recovered by a circular anastomosis surgical stapler that is provided with the system.