Terminal-Steerable Surgical Instrument for In-Situ Lesion Positioning
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Solution Overview
Problem
Minimally invasive surgical instruments often require multiple replacements and repositioning, increasing operation time and the risk of wound infection and tissue damage, especially when dealing with large lesions that require adjustments within tight spaces.
Innovation Solution
A minimally invasive surgical instrument with a terminal steerable mechanism, comprising an intervention device with a flexible section and a control device with a rotatable sphere and operating lever, allowing independent steering of the instrument's end through a system of wires, enabling precise positioning without needing to remove or reinsert the instrument.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple instruments are used in narrow workspace, then functional versatility is improved, but operation time increases and wound infection risk increases
Solution Approach 1:
The patent combines multiple surgical instruments into a single integrated minimally invasive surgical instrument. The intervention device includes a main body with a flexible section and an operation section, integrating functions that would traditionally require multiple separate instruments. This allows medical staff to perform various surgical operations through one instrument rather than repeatedly inserting and removing multiple instruments, thereby reducing operation time and wound infection risk while maintaining functional versatility
2Measurement precision
If insertion instrument is removed and repositioned to adjust terminal, then positioning accuracy is improved, but tissue damage risk increases
Solution Approach 1:
The patent implements a dynamic terminal adjustment mechanism that allows the operation section to be steered and repositioned while the instrument remains inserted in the patient's body. The flexible section enables the operation section to bend and change direction, and the control device with sphere and operating lever allows precise terminal positioning without removing the instrument. This dynamic adjustment capability achieves positioning accuracy while eliminating the harmful effect of repeated instrument insertion and removal that could damage normal tissue
Solution Approach 2:
The intervention device is segmented into three main sections: main body, flexible section, and operation section. This segmentation allows the operation section to be independently positioned and steered through the flexible section, enabling precise terminal adjustment without moving the entire instrument or removing it from the patient's body, thereby reducing tissue damage risk while maintaining positioning accuracy
3Ease of operation
If insertion instrument is moved in situ to adjust terminal, then operation convenience is improved, but normal tissue injury risk increases
Solution Approach 1:
The patent provides dynamic control of the operation section through a control device that includes a sphere with rotational degrees of freedom and an operating lever. This allows medical staff to conveniently adjust the terminal position and orientation of the operation section while the instrument remains in place, improving operation convenience. The flexible section transmits the control movements to the operation section, enabling precise positioning without moving the entire instrument through normal tissue, thereby reducing tissue injury risk
Data Source
AI summary
The present invention provides a minimally invasive surgical instrument with a terminal steerable mechanism, comprising an intervention device, a control device and one or more wires. The strip-shaped intervention device sequentially includes a main section, a flexible section and an operation section from the top to the end. The control device includes a sphere with a preset rotational degree of freedom, and an operating lever connected to the sphere. Said one or more wires are extended along the main section of the intervention device. Here, the second ends of said at least one or more wires are connected to the flexible section or the operation section of the intervention device, and the first ends thereof are connected to at least a part of the control device.