Acoustic Sensor Suction Device for Hemolysis Prevention
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Solution Overview
Problem
Current suction devices in both medical and non-medical fields face inefficiencies and damage to blood components during suction, particularly hemolysis, due to turbulent suction processes, which require manual operator intervention and are prone to air mixing.
Innovation Solution
The implementation of an acoustic wave sensor that detects characteristic sounds generated during suction, allowing for automatic control of suction power to reduce turbulence and prevent damage, using a control device to adjust suction power based on detected acoustic patterns, and an adherence-suction sensor to manage blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operator intervention is used to control suction power, then the suction process can be adjusted to some extent, but the operator must repeatedly reposition the suction element and cannot fully avoid turbulent suction that causes hemolysis
Solution Approach 1:
The patent replaces manual mechanical control with an automated acoustic control system. A microphone detects acoustic waves generated during suction, and a control device automatically adjusts pump power based on the detected acoustic signal, eliminating the need for manual operator intervention and reducing turbulence-induced hemolysis.
Solution Approach 2:
The system implements acoustic feedback control where the microphone continuously monitors the suction process acoustic waves, and the control device uses this feedback to dynamically adjust pump power in real-time, maintaining optimal suction conditions and preventing hemolysis without manual intervention.
2Productivity
If high suction power is applied to improve suction efficiency, then liquid can be removed faster, but turbulence increases causing hemolysis and platelet damage
Solution Approach 1:
The system dynamically adjusts suction power based on real-time acoustic conditions rather than maintaining a fixed high suction power. The pump power varies continuously according to the detected acoustic wave characteristics, optimizing the balance between suction efficiency and blood cell preservation.
Solution Approach 2:
The control device changes the operational parameters of the pump based on acoustic feedback. When acoustic waves indicate turbulent flow or hemolysis risk, the system automatically reduces suction power, thereby preventing blood cell damage while maintaining adequate suction efficiency.
3Extent of automation
If automatic control is implemented using pressure sensors or optical sensors, then some automation is achieved, but the system cannot fully detect and respond to turbulent suction conditions that cause hemolysis
Solution Approach 1:
The patent replaces pressure sensors and optical sensors with an acoustic sensing system. The microphone detects acoustic waves that directly correlate with turbulent flow and hemolysis conditions, providing more reliable and direct feedback for automation control compared to indirect pressure or optical measurements.
Solution Approach 2:
The system uses acoustic wave characteristics (frequency, amplitude, pattern) as indicators of suction conditions, analogous to using color changes as indicators. Different acoustic signatures correspond to different flow regimes, allowing the system to reliably detect turbulent conditions that precede hemolysis.
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
This solution enables more efficient and automated suction processes, reducing hemolysis and air mixing, allowing for safer and more effective liquid suction without the need for continuous manual operation, and preventing blockages in suction devices.
Implementation Method 1
the sensor is designed as an acoustic wave sensor. The acoustic wave sensor is equipped to detect acoustic waves which are generated by the suction element during the operation thereof
Data Source
AI summary
The invention relates to a suction device for suctioning liquids, comprising a suction element, which is provided with at least one suction opening for receiving the liquid, and a pump which is connected to the suction element and which is equipped to generate a suction vacuum in the suction element, wherein a control device and at least one sensor which is connected to the control device are provided, wherein the control device is equipped to influence the suction power acting at the suction opening dependent on the signals received from the sensor.The object of the invention is to provide a suction device for suctioning liquids, said device working with greater efficiency than known suction devices. Additionally, there is a requirement in the medical field to provide a medical suction device which to the greatest possible extent prevents the damage that occurs to blood components during automatic operation.This object is achieved by the fact that the sensor is designed as an acoustic wave sensor. The acoustic wave sensor is equipped to detect acoustic waves which are generated by the suction element during the operation thereof.