Endoscopic Treatment Instrument with Fixed and Movable Grasping Members
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Solution Overview
Problem
Existing treatment instruments face challenges in accurately positioning the grasping portion relative to objects, especially in environments with varying surface hardness, such as soft stomach walls in medical applications and hard floors in industrial settings, making it difficult to collect objects like lesions or screws.
Innovation Solution
A treatment instrument with a distal end grasping portion comprising a movable member and a fixation member, where the second distal end portion of the fixation member and the first distal end portion of the movable member form a grasping mechanism that can move forward and backward along the longitudinal axis, allowing precise positioning and grasping of objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the grasping portion is made movable to enable closing action, then the grasping function is improved, but the positioning accuracy relative to the object deteriorates
Solution Approach 1:
The treatment instrument is divided into a fixed distal end portion and a movable grasping portion. The fixed portion maintains stable positioning relative to the object, while the movable grasping portion can open and close independently to perform grasping actions without affecting the positioning accuracy of the fixed portion.
Solution Approach 2:
The grasping portion is designed as a movable member that can dynamically change its state between open and closed positions. This dynamic capability allows the grasping portion to adapt to different operational requirements while the fixed distal end maintains stable positioning throughout the movement.
2Measurement precision
If the distal end is pushed against the stomach wall for positioning, then the positioning capability is improved, but the damage to the soft tissue worsens
Solution Approach 1:
The instrument separates the positioning function (fixed distal end) from the grasping function (movable portion). This allows the fixed distal end to provide stable positioning without requiring forceful pushing, while the movable grasping portion performs the actual object collection, thereby reducing damage to soft stomach walls.
Solution Approach 2:
The fixed distal end acts as an intermediary that provides stable positioning reference, while the movable grasping portion serves as the actual interacting element with the target object. This mediation allows positioning without direct forceful contact between the main instrument body and the soft tissue.
Data Source
AI summary
A treatment instrument used together with an endoscope includes a distal end grasping portion. The distal end grasping portion includes a distal end movable member capable of moving forward and backward along a longitudinal axis of the distal end grasping portion, and a distal end fixation member including a bending portion provided on a distal end side along the longitudinal axis with respect to a tilt portion of the distal end movable member. The bending portion of the distal end fixation member and the tilt portion of the distal end movable member constitute a grasping portion.