Arthroscopic Perfusion Control for Turbidity-Free Tissue Cutting
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Solution Overview
Problem
Arthroscopic surgery is hindered by reduced visibility in joint cavities due to turbidity caused by cutting of living tissue, which obscures the treatment area and complicates the surgical procedure.
Innovation Solution
A treatment system and method that includes a controller to suppress reduced visibility by controlling the cutting process based on preparation information, using a treatment instrument to minimize turbidity in the liquid environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the treatment instrument cuts living tissue in the joint cavity, then the treatment is performed effectively, but the liquid becomes turbid and visibility of the treatment area is reduced
Solution Approach 1:
The controller performs preliminary actions by detecting cutting preparation information before the actual cutting occurs. When the treatment instrument approaches the living tissue or positioning information indicates imminent contact, the controller proactively controls the perfusion device to increase perfusate supply, preventing turbidity before it significantly degrades visibility.
Solution Approach 2:
The perfusate acts as an intermediary substance between the cutting process and the visual field. By controlling the perfusion device to supply adequate perfusate during cutting, the system uses this liquid medium to wash away debris and maintain optical clarity, allowing the surgeon to continue observing the treatment area.
2Productivity
If the treatment instrument is activated to cut tissue, then the surgical procedure progresses, but turbidity increases and obscures the treatment area
Solution Approach 1:
The controller continuously receives cutting information from the treatment instrument and uses this feedback to dynamically adjust perfusion control. When cutting is detected or anticipated, the controller increases perfusate supply; when cutting stops, it reduces supply. This closed-loop feedback system maintains visibility while supporting continuous surgical progress.
Solution Approach 2:
The system transitions from static perfusion control to dynamic control that adapts to the surgical process. The controller adjusts perfusion rates in real-time based on the surgical phase, increasing flow during cutting operations and decreasing it during observation or instrument repositioning, thereby optimizing both productivity and visibility management.
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
Enhances visibility in the treatment area by reducing turbidity, allowing for clearer surgical procedures and improved precision in arthroscopic surgeries.
Implementation Method 1
The ultrasound treatment instrument is configured such that a distal end of the treatment instrument ultrasonically vibrates. In the arthroscopic surgery, the distal end of the treatment instrument pulverizes (cuts) a bone by ultrasonic vibration
Data Source
AI summary
A treatment system includes: a treatment instrument for cutting living tissue in a liquid; and a controller for performing control, prior to cutting the living tissue with the treatment instrument, to suppress reduced visibility of a treatment area due to turbidity in the liquid caused by the cutting of the living tissue based on preparation information regarding cutting preparation for the treatment instrument.