Endoscope Treatment Instrument with Integrated Sheath
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Solution Overview
Problem
Conventional endoscope treatment instruments require staff assistance for inserting and operating treatment instruments, limiting operator independence and efficiency, especially when dealing with the insertion and operation of sheaths within the treatment instrument channel.
Innovation Solution
A medical device system that includes a treatment instrument with a flexible insertion portion, an operation wire for advancing and retracting, a detecting portion for monitoring movement, and a control device that corrects the operation wire's position based on detection results to maintain a consistent treatment portion state, allowing for autonomous operation and reduced resistance during insertion and withdrawal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a treatment instrument with a sheath is inserted into the treatment instrument channel, then the treatment portion can be extended from the endoscope, but staff assistance is required to hold the sheath during insertion and operation
Solution Approach 1:
The treatment instrument is designed to be self-contained with the sheath integrated into the instrument structure. The operator can independently insert and operate the treatment instrument without requiring staff to hold the sheath, as the instrument handles its own positioning and operation autonomously.
Solution Approach 2:
The sheath and treatment instrument are merged into a single integrated unit. The sheath is not a separate component requiring external handling but is combined with the treatment instrument body, allowing the operator to manipulate both components simultaneously with one hand.
2Reliability
If the sheath is held by staff during insertion, then the proximal end of the sheath can be protected from contact with unclean areas, but the operator cannot independently operate the treatment instrument
Solution Approach 1:
The treatment instrument maintains its own sterile barrier through the integrated sheath design that the operator controls directly. The operator's hand remains protected from unclean areas while independently manipulating the instrument, eliminating the need for staff assistance in maintaining the sterile field.
3Ease of operation
If the operation wire is pulled and relaxed to operate the treatment portion, then the treatment can be performed, but the sheath winding may cause resistance force that disturbs the operation wire movement
Solution Approach 1:
The sheath is designed with dynamic flexibility to accommodate the operation wire movement. The sheath material and structure are optimized to allow smooth expansion and contraction during wire pulling and relaxing, minimizing resistance forces while maintaining the necessary structural integrity for treatment operations.
Data Source
AI summary
A medical device of the invention includes: a treatment instrument including a treatment portion which is used extended from a distal end of an endoscope insertion portion having a treatment instrument channel, an operation portion for operation of advancing/retreating an operation wire coupled to the treatment portion, and a treatment instrument insertion portion in which the operation wire is advanceably/retreatably inserted, the treatment instrument insertion portion having a predetermined flexibility and inserted into the treatment instrument channel; a detecting portion for detecting advancing/retreating moving amount of the treatment instrument insertion portion; a treatment portion operating device to which the operation portion is installed, the treatment portion operating device advancing/retreating the operation wire to operate the treatment portion; an operation instructing portion for instructing operation of the treatment portion; and a control device for judging a state of the treatment instrument insertion portion and driving the treatment portion operating device by a moving amount obtained by correcting an advancing/retreating amount of the operation wire, based on a detection result from the detecting portion according to an instruction from the operation instructing portion.