Endoscope Mounting Position Accuracy in Surgical Outer Tube
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Solution Overview
Problem
In endoscopic surgery, the difficulty in simultaneously operating an endoscope and treatment tools leads to challenges in directing the endoscope's orientation, requiring an assistant and prolonging surgery time, while the previous technique for interlocking endoscopes and tools within an outer tube made it hard to mount the endoscope correctly, causing a reduced visual field during treatment.
Innovation Solution
A surgical apparatus with an outer tube that includes an endoscope and treatment tool insertion passages and an interlocking member with stoppers to restrict movement, ensuring the endoscope is mounted at a predetermined position, preventing its distal end from entering the outer tube and maintaining a clear visual field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the endoscope is inserted through the outer tube without positioning means, then the insertion process is simple, but the mounting position cannot be accurately controlled causing the distal end to enter the outer tube and reducing the visual field
Solution Approach 1:
The patent applies preliminary action by providing a positioning part on the endoscope that预先 (in advance) determines the correct mounting position. The positioning part includes a positioning surface that contacts a stopper surface on the outer tube, pre-establishing the correct spatial relationship before the endoscope is fully inserted. This prevents the distal end from entering the outer tube while maintaining simple insertion procedure.
2Ease of operation
If an assistant operates the endoscope while the operator handles treatment tools, then the endoscope can be operated, but the surgery time is prolonged and the operator's hands are bound
Solution Approach 1:
The patent applies merging by integrating the endoscope and treatment tool operations through the interlocking mechanism. The interlocking member couples the endoscope and treatment tool, allowing their coordinated movement as a single unit. This enables the operator to control both instruments simultaneously with one hand, merging two separate operational tasks into one unified action, thereby eliminating the need for an assistant and reducing surgery time.
3Adaptability or versatility
If the endoscope and treatment tool are interlocked within the outer tube, then the number of holes in the body wall is reduced, but the mounting position of the endoscope becomes difficult to control
Solution Approach 1:
The patent applies self-service through the self-aligning positioning mechanism. The positioning part on the endoscope and the corresponding stopper surface on the outer tube are designed to automatically align when the endoscope is inserted. The positioning surface and stopper surface contact each other to automatically establish the correct position without requiring manual adjustment or complex alignment procedures, making the mounting process easy while maintaining interlocking functionality.
Data Source
AI summary
Provided is a surgical apparatus for an endoscope that can appropriately and easily perform mounting work of an endoscope onto an outer tube. An outer tube, which passes through a body wall, is inserted into a body cavity, and guides an endoscope and a treatment tool into the body cavity, includes a slider that is an interlocking member that moves the endoscope and the treatment tool forward and backward in an interlocking manner. At the time of mounting of an endoscope in which an endoscope insertion part is coupled to a slider body of the slider, the endoscope insertion part is inserted to a position where a larger-diameter part provided in the endoscope insertion part abuts against a base end surface of an outer tube. Accordingly, the slider body can be coupled to a predetermined suitable position of the endoscope insertion part.