Longitudinal Tissue Joiner for Endoscopic Microwave Coagulation
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Solution Overview
Problem
Existing tissue suturing devices using microwaves are difficult to use in endoscopic surgery due to their design, which requires motion perpendicular to the device's longitudinal axis, making them unsuitable for the narrow spaces encountered in endoscopic procedures.
Innovation Solution
Development of a tissue joining device with a protruding section and a receiving section, or a device featuring multiple tissue graspers, both capable of moving in the longitudinal axis direction to bring tissue pieces into contact and coagulate them using microwaves, allowing for effective tissue joining in narrow spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a tissue suturing device uses microwaves with motion perpendicular to the longitudinal axis, then coagulation and fastening of tissue is achieved, but the device cannot be used in endoscopic surgery with narrow spaces
Solution Approach 1:
The patent inverts the motion direction from perpendicular to longitudinal axis. The protruding section moves in the distal direction and/or the receiving section moves in the proximal direction along the longitudinal axis, enabling the device to be operated within the narrow confines of an endoscope while maintaining tissue coagulation and fastening functionality.
Solution Approach 2:
The patent introduces dynamic movement along the longitudinal axis, where the protruding section and/or receiving section can move relative to each other in the distal/proximal directions. This dynamic adjustment allows the device to adapt to the narrow spatial constraints of endoscopic surgery while preserving the microwave coagulation function.
2Adaptability or versatility
If the device structure is modified to enable longitudinal axis motion, then endoscopic surgery becomes possible, but the device complexity increases
Solution Approach 1:
The patent divides the device into distinct protruding section and receiving section components, each with specific functions. The protruding section includes a tip oriented in the distal direction, while the receiving section includes a tip oriented in the proximal direction. This segmentation allows independent movement and positioning along the longitudinal axis, enabling endoscopic application while maintaining functional clarity.
Solution Approach 2:
The protruding section and receiving section are configured to move relative to each other along the longitudinal axis, with tips positioned at different locations (proximal side vs distal side). This nested arrangement allows both components to be integrated within the endoscope's narrow space while maintaining their individual movement capabilities for tissue engagement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure tissue joining similar to traditional suturing, with the ability to be used in endoscopic surgery by applying microwaves to bring tissue pieces into contact and fix them, overcoming the limitations of existing devices in narrow spaces.
Implementation Method 1
a central conductor and an external conductor configured to apply microwaves
Implementation Method 2
portions having been brought into contact with each other or placed on one another are coagulated and/or fastened with use of microwaves
Data Source
AI summary
Developed is a tissue joining device for endoscopic surgery, which can be used in NOTES, or the like. As a result of intensive studies carried out to solve the problem described above, the inventors of the present invention have conceived of two tissue joining device having quite novel structures and completed the present invention.