Double-Layer Sheath Irrigation-Suction System for Endoscopic Visibility
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Solution Overview
Problem
Traditional percutaneous endoscopic procedures face complications such as sepsis, residual stones, and bleeding due to unbalanced irrigation and suction pressures, obscured visibility, and the need for multiple instruments, which are not addressed by existing irrigation-suction systems.
Innovation Solution
A visible percutaneous puncture and dilation irrigation-suction system with a double-layer sheath tube structure and coaxial main tube, allowing for independent and controllable irrigation and suction channels, enabling multiple-orientation vortex irrigation and continuous negative pressure aspiration, while maintaining safe intraluminal pressure and clear visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If irrigation fluid is pumped into the intrarenal pelvicaliceal system through the working channel of the endoscope, then the surgical area is exposed and washed, but the irrigation pressure may exceed safe limits causing sepsis
Solution Approach 1:
The system divides the irrigation-suction function into separate channels: the working channel of the endoscope and an independent suction channel. This segmentation allows independent control of irrigation and suction, preventing unbalanced pressure that could lead to sepsis while maintaining effective irrigation for surgical visibility.
Solution Approach 2:
The patent introduces a sheath tube as an intermediary component between the endoscope and the surgical field. The sheath tube provides an additional pathway for fluid management, enabling controlled irrigation through the working channel while simultaneously providing a dedicated suction pathway to maintain safe intraluminal pressure and prevent sepsis.
2Reliability
If irrigation pressure is lower than intrarenal pressure, then fluid evacuation becomes difficult, but visibility becomes unclear and procedures become more difficult
Solution Approach 1:
By separating irrigation and suction into different channels, the system can independently optimize each function. The suction channel can maintain higher negative pressure for effective fluid evacuation without compromising irrigation pressure needed for visibility, resolving the contradiction between evacuation efficiency and field clarity.
Solution Approach 2:
The system enables dynamic adjustment of irrigation and suction parameters independently. By changing the pressure and flow parameters in each channel separately, the system can maintain optimal visibility while ensuring adequate fluid evacuation, even when intrarenal pressure varies during the procedure.
3Adaptability or versatility
If multiple instruments are used for different procedures, then procedure versatility is limited, but system complexity increases
Solution Approach 1:
The endoscope system is designed with multi-functional capabilities: the working channel serves for both irrigation fluid passage and suction, while the sheath tube provides additional irrigation and suction pathways. This universal design allows a single system to handle various procedural needs (irrigation, suction, instrument passage) without requiring multiple separate instruments, thereby increasing versatility while controlling complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances surgical efficiency and safety by providing clear visibility, efficient fluid management, and reduced risk of complications through separate and controllable irrigation and suction channels, allowing for precise procedure execution and effective fluid removal.
Implementation Method 1
irrigation fluid with a predetermined safe pressure and flow is perfused into intrarenal pelvicaliceal system
Implementation Method 2
Fluid is pumped into the irrigation port and flows through the space between inner and outer sheaths
Implementation Method 3
connecting the suction exit of collection bottle to a continuous controllable negative pressure aspirator
Implementation Method 4
The difference between intraluminal irrigation pressure and sucking negative pressure, an irrigation-suction effect is generated
Implementation Method 5
inserting the endoscope through main tube makes the operative field visible
Data Source
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AI summary
The invention discloses a surgical instrument and a method of using the same, more particularly a percutaneous puncture and dilation visible irrigation-suction system and a method of using the same, comprising a main tube, which is contiguous with the sheath tube and has an end for an endoscope insertion. The sheath tube comprises an inner sheath and an outer sheath joined together in a sleeve type. There is a space between inner and outer sheath. The inner sheath is connected to main tube, together building a channel via which the endoscope is inserted and withdrawn. The sheath tube is connected to main tube after completing puncture and dilation, then endoscope system is introduced for observation and operation. The present invention provides a percutaneous puncture and dilation visible irrigation-suction system and a method of using the same, with a continuous controllable visible negative pressure aspirator, achieving high irrigation and powerful suction efficiency, as well as clear endoscopic view. This invention solves existing instrumental and technical problems, including low irrigation pressure, obscured visibility, small irrigation and suction channel, complicated procedures, and poor versatility due to different instruments required by different kinds of procedures.