Endoscopic Stapler Lever Structure for Precise Suture Positioning
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Solution Overview
Problem
Conventional medical staplers face difficulties in ascertaining the suture position and determining if suturing is possible with the treatment target fully included, especially when a lesion is present.
Innovation Solution
The medical stapler includes a stapling head with a staple ejection portion, an anvil that is openably and closably coupled by a rotation shaft, a staple receiving portion, a lever that can be raised via a lever operation wire, and a temporarily immobilizing portion to facilitate precise suturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional medical stapler with endoscope is used for suturing, then the treatment target can be observed during suturing, but it is difficult to ascertain the suture position and whether the treatment target is fully included
Solution Approach 1:
The patent introduces a treatment tool as an intermediary device between the endoscope and the stapler. This treatment tool includes a treatment target holding portion that can hold the treatment target, and a treatment target projection portion that projects the treatment target toward the endoscope. This intermediary structure enables the treatment target to be visually confirmed during the suturing process while maintaining secure holding and positioning capabilities.
2Ease of operation
If the treatment target is held and manipulated during suturing, then suturing can be performed, but it becomes difficult to maintain stable positioning for precise suture placement
Solution Approach 1:
The patent implements preliminary action by providing a treatment target holding portion that secures the treatment target before suturing begins. The treatment target is held in a predetermined position and state, ensuring stable positioning is established in advance. This preliminary holding action prevents positioning instability during subsequent suturing operations.
3Ease of operation
If the stapler structure is simplified for ease of use, then operation becomes easier, but the ability to precisely control and visualize the suture process is reduced
Solution Approach 1:
The patent applies multi-functionality by designing the treatment tool to perform multiple functions: holding the treatment target, projecting it for visualization, and maintaining positioning stability. The stapler system integrates the endoscope for observation, the treatment tool for manipulation and positioning, and the stapling mechanism for suturing, creating a universal system that handles both ease of operation and precision requirements through coordinated multi-functional components.
Data Source
AI summary
A medical stapler includes a stapling head including a staple ejection portion, an anvil openably and closably coupled to the stapling head by a rotation shaft, a staple receiving portion provided in the anvil and provided at a position facing the staple ejection portion when the stapling head and the anvil are in a closed state, a lever rotatably provided on the stapling head, and a lever operation wire connected to the lever and provided to extend in a direction of a proximal end of the stapling head, in which the lever is capable of raising upward with respect to the stapling head in accordance with advance and retraction of the lever operation wire.