Deformable Pushing Tool for Laparoscopic Tissue Inversion
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Solution Overview
Problem
Current laparoscopic greater curvature plication procedures face challenges in efficiently inverting and suturing hollow organs due to limitations in existing medical instruments, particularly in maintaining the necessary inversion and suture angles, and in effectively managing internal organ pressure during the procedure.
Innovation Solution
A tissue-suturing system comprising a pushing tool with a rod-shaped shaft and a linear portion that can maintain a desired angle, allowing for deformation to facilitate easy insertion and inversion of hollow organs, combined with a suturing device that can perform sutures at a right angle to the inversion line, utilizing a suture member to maintain the inverted state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rod-shaped pressing member is used to invert stomach tissue, then the tissue inversion function is achieved, but the instrument cannot maintain a desired angle between the pressing portion and the shaft during the procedure
Solution Approach 1:
The instrument incorporates a stopper mechanism that maintains a desired angle between the shaft portion and the linear portion (including the pressing portion) when the pressing portion is closely pressed against the hollow organ. This dynamic angle maintenance capability allows the instrument to adapt to different tissue inversion requirements while preserving structural stability.
2Productivity
If the pressing portion length is increased to improve tissue inversion effectiveness, then the inversion capability is enhanced, but the instrument becomes more difficult to insert into the body cavity
Solution Approach 1:
The tissue pushing part is designed to be deformable, allowing the shaft portion and the linear portion to line up on the same line during insertion. This dynamic configuration change enables the instrument to be inserted easily into the body cavity, and then maintain the desired angle configuration when the pressing portion contacts the hollow organ for effective tissue inversion.
3Manufacturing precision
If the suturing direction is positioned at right angle to the pressing portion extension direction, then precise suture placement is achieved, but the device complexity increases
Solution Approach 1:
The instrument integrates both tissue inversion and suturing functions into a single device. The suturing device is configured to perform suturing at a right angle to the direction in which the pressing portion extends, enabling precise suture placement while maintaining a unified instrument structure that reduces overall complexity.
Data Source
AI summary
A pushing tool of the present invention includes a tissue pushing part having a shaft portion that is formed in a rod-shape, a linear portion including a pressing portion that is connected to the shaft portion and extends in a longitudinal direction, and a stopper maintaining an angle between the shaft portion and the linear portion at a desired angle when the pressing portion is closely pressed against an outer surface of a hollow organ.