Medical Suction Controller with Real-Time Sensor Feedback
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Solution Overview
Problem
Existing medical systems face challenges in adjusting suction force during medical operations, particularly when dealing with changing conditions inside a body cavity, such as a stuck cut piece, making it difficult to determine optimal suction parameters and operate the suction unit effectively.
Innovation Solution
A medical system with a controller that includes sensors to detect physical quantities related to the cut object, such as suction flow rate and negative pressure, allowing for the calculation and adjustment of suction parameters to optimize the suction force and time, ensuring appropriate and automatic suction of the cut piece based on the detected conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction force is increased to prevent clogging when a cut piece is stuck, then the suction effectiveness is improved, but the risk of damaging the blood vessel or causing discomfort to the patient increases
Solution Approach 1:
The controller monitors suction parameters (flow rate, negative pressure) in real-time and automatically adjusts suction force based on detected conditions. When clogging is detected through parameter changes, the system responds by increasing suction force only when necessary, rather than maintaining high suction force throughout the procedure, thus preventing vessel damage while ensuring effective suction when needed.
Solution Approach 2:
The suction force is made dynamically adjustable rather than fixed. The system can change suction parameters in real-time based on operational conditions, allowing low suction force during normal operation to prevent damage, and high suction force when clogging occurs to maintain effectiveness.
2Productivity
If the suction parameters are manually adjusted according to changing conditions, then the suction effectiveness is improved, but the operator's workload and difficulty of operation increase
Solution Approach 1:
The system performs self-adjustment of suction parameters based on automatic detection of operational conditions. The controller monitors suction parameters and automatically modifies suction force without requiring manual intervention from the operator, reducing workload while maintaining optimal suction effectiveness.
Solution Approach 2:
The system uses feedback from suction parameter monitoring to automatically determine when adjustment is needed and what adjustment to make. This closed-loop control eliminates the need for continuous manual assessment and adjustment by the operator.
3Productivity
If the suction force is continuously monitored and adjusted, then the suction effectiveness is improved, but the device complexity increases
Solution Approach 1:
The controller performs multiple functions: it monitors suction parameters, detects clogging conditions, determines appropriate adjustments, and executes suction force modification. By consolidating these functions in a single control unit, the system achieves sophisticated suction control without proportionally increasing overall device 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 enables appropriate and automatic suction of the cut piece in the blood vessel, preventing clogging and maintaining optimal suction force, thereby improving workability and preventing unintentional decreases in suction force.
Implementation Method 1
a pump operable according to one or more parameters to create a vacuum in the lumen to transport the cut object through the lumen
Data Source
AI summary
A medical system includes a device for removing an object in a body cavity, the device including a shaft portion including a rotatable drive shaft and a lumen, a motor configured to rotate the drive shaft, a cutter attached to a distal end of the drive shaft and configured to cut the object when the drive shaft is rotated by the motor, and a pump operable according to one or more parameters to create a vacuum in the lumen to transport the cut object through the lumen. The system further includes one or more sensors each configured to detect a physical quantity related to the cut object transported through the lumen, and a controller configured to determine the parameters based on the physical quantity detected by each of the sensors, and control the pump to create the vacuum in the lumen according to the determined parameters.