Endoscopic Forceps with Detachable Needle and Dual Sheath
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Solution Overview
Problem
Existing endoscopic treatment instruments face challenges in operability, particularly in effectively inserting and securing detachable needles and sutures within the body, due to complex control mechanisms and interference between instrument components.
Innovation Solution
The endoscopic treatment instrument features a pair of forceps members with a pivot shaft, a distal end locking mechanism, and a release member to securely grasp and release objects, along with a casing system that allows for thread-based suturing and a dual sheath design for enhanced control and friction adjustment, facilitating easier insertion and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex control mechanism is used to insert and secure detachable needles and sutures, then the instrument can perform suturing functions, but the operability deteriorates due to interference between components
Solution Approach 1:
The instrument is divided into functionally independent modules: forceps members for grasping, a detachable needle for suturing, and a casing for housing components. Each module operates independently, reducing interference and improving operability while maintaining reliable suturing function through the dedicated needle and casing system.
Solution Approach 2:
The needle is made detachable and can be removed from the casing when not in use. This extraction of the needle from the main body reduces interference between components during operation and simplifies the control mechanism, while the needle remains available for suturing functions when attached.
2Reliability
If a detachable needle system is used, then the instrument can perform suturing, but the device complexity increases
Solution Approach 1:
The needle, casing, and forceps members are combined into an integrated assembly where the needle can be detached from the casing. This merging of components into a unified structure reduces overall device complexity while maintaining the suturing capability through the detachable needle system.
Solution Approach 2:
The casing serves multiple functions: it houses the needle, provides a mounting structure for the forceps members, and acts as a protective enclosure. This multi-functionality reduces the need for separate components, thereby reducing device complexity while maintaining suturing capability.
Data Source
AI summary
The endoscopic treatment instrument includes an insertion portion; a treatment portion; and a control portion. The treatment portion includes a pair of forceps members; a tip cover; a distal end holding portion that is fixed to a distal end of the insertion portion; a distal end locking member that restrains a relative movement by locking the tip cover onto the distal end holding portion; and a distal end release member that is provided on an operational member by which the pair of forceps members is opened and closed and that releases an engagement made by the distal end locking member between the tip cover and the distal end holding portion at least when the pair of forceps members is closed.