Medical Pump Suction Pressure Control via Acceleration Monitoring
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Solution Overview
Problem
Pump devices used for suctioning fluids, especially in medical applications, face challenges such as suction attachment to vessel walls due to reduced pressure, leading to potential damage and tissue irritation, as existing solutions like pigtail ends cannot completely prevent contact with vessel walls.
Innovation Solution
A method for operating a pump device that monitors acceleration variables to temporarily reduce suction pressure during abrupt movements, preventing suction attachment by reducing pump power during detected spikes in acceleration, and restoring pressure once stable conditions are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pump maintains high suction pressure to ensure reliable fluid suctioning, then the suction performance is improved, but the risk of suction attachment to vessel walls increases
Solution Approach 1:
The pump device dynamically adjusts the suction pressure based on real-time acceleration measurements. When abrupt movements are detected, the suction pressure is temporarily reduced to prevent suction attachment. This dynamic control allows the system to maintain high productivity during stable conditions while minimizing harmful effects during movement, resolving the contradiction between consistent suction performance and variable safety risks.
Solution Approach 2:
The system uses acceleration sensors to continuously monitor movement and provides feedback to the control unit, which adjusts suction pressure accordingly. This closed-loop feedback mechanism enables the pump to respond to changing conditions in real-time, maintaining optimal suction performance while preventing suction attachment when movement is detected.
2Productivity
If the pump operates continuously at full power, then the fluid suctioning efficiency is improved, but the potential for tissue damage during movement increases
Solution Approach 1:
The pump operates in periodic cycles of high-power suction during stable periods and reduced-power mode during detected movement periods. This periodic modulation of pump power maintains high overall efficiency while periodically eliminating the harmful effect of tissue damage risk when movement occurs.
3Reliability
If the suction pressure is reduced to prevent suction attachment, then the safety is improved, but the suction performance deteriorates
Solution Approach 1:
The system dynamically modulates suction pressure between high and low states based on movement detection, ensuring high safety during movement while maintaining high suction performance during stable operation. This dynamic approach prevents the need for consistently reduced pressure, thereby avoiding permanent deterioration of suction performance.
4Reliability
If the pump device includes movement detection and pressure control mechanisms, then the safety against suction attachment is improved, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical prevention mechanisms (such as rigid catheter designs or mechanical barriers) with a sensor-based detection and electronic control system. This substitution uses acceleration sensors and electronic pressure control to achieve safety, which is simpler and more adaptable than mechanical solutions.
Solution Approach 2:
The pump device monitors its own operational conditions through integrated acceleration sensors and automatically adjusts suction pressure without external intervention. This self-service capability eliminates the need for external monitoring systems or manual control, reducing overall system complexity while maintaining high safety.
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 approach effectively reduces the risk of suction attachment to vessel walls by controlling suction pressure based on acceleration measurements, ensuring reliable and safe fluid suctioning without causing tissue damage.
Implementation Method 1
a pump (3) as well as a suction element (5) connected to this pump, with the suction element (5) having a suction opening (6), wherein the pump (3) sucks a fluid by way of producing a reduced pressure in the suction element (5)
Data Source
AI summary
A method may be provided for the operation of a pump device, which comprises at least one pump as well as a suction element which is connected to the at least one pump and which has a suction opening positioned in a cavity of a body of a patient that sucks a fluid by way of producing a reduced pressure in the suction element, wherein an acceleration is measured and monitored during the operation of the pump device, wherein the reduced pressure in the suction element is reduced at least for a limited reaction time period, given the occurrence of an acceleration variable which lies above a fixed threshold valve. A correspondingly configured pump device may be provided.