Syringe Pump Dual Sensor Pressure Monitoring
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Solution Overview
Problem
Traditional syringe pumps lack accurate determination of injection pressure, posing safety hazards as displayed values may not be entirely accurate, which can lead to inappropriate infusion speeds affecting therapeutic efficacy and patient safety.
Innovation Solution
A syringe pump with real-time pressure detection using dual sensors, where the first sensor determines if the pressure exceeds a threshold to stop infusion and sound an alarm, and a second sensor with higher sensitivity further monitors pressure to ensure accurate determination of the patient's bearing limit, incorporating a pressure detection module with a flexible membrane and a spring support system for precise pressure monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional single pressure sensor or display screen is used to monitor injection pressure, then the device complexity is low, but the measurement precision and reliability of pressure detection are insufficient
Solution Approach 1:
The pressure detection system is segmented into two independent pressure sensors (first pressure sensor and second pressure sensor) that work in parallel. Each sensor monitors pressure independently, allowing the system to achieve higher measurement precision through multiple detection points without requiring a single overly complex sensor system.
Solution Approach 2:
A processor acts as an intermediary between the two pressure sensors and the control system. The processor receives pressure values from both sensors, processes the data, and determines whether to stop the driving device based on predetermined thresholds, thereby managing the complexity of coordinating multiple sensors.
2Reliability
If real-time dual pressure sensor monitoring is implemented, then the reliability of pressure determination is improved, but the device complexity increases
Solution Approach 1:
The system implements feedback control by continuously monitoring pressure values from two sensors and comparing them against predetermined thresholds. When either sensor detects pressure exceeding its threshold, the processor sends a stop signal to the driving device, creating a reliable closed-loop control system that automatically responds to pressure conditions.
Solution Approach 2:
Predetermined pressure thresholds are established before the injection process begins. This preliminary configuration allows the system to immediately compare real-time sensor readings against safe pressure limits without requiring complex real-time analysis, thereby improving reliability while managing control system complexity.
3Measurement precision
If manual monitoring of display screen is used, then the ease of operation is maintained, but the measurement precision and safety monitoring capability deteriorate
Solution Approach 1:
The system performs self-service pressure monitoring and safety control through automated sensor detection and processor-based decision making. The driving device automatically stops when pressure thresholds are exceeded without requiring manual intervention, thereby achieving precise measurement and active safety monitoring while maintaining operational simplicity through automation.
Solution Approach 2:
The manual visual monitoring of display screens is replaced with electronic pressure sensors and automated processor-based control. This substitution transitions from mechanical/optical display observation to electronic sensing and automatic control, significantly improving measurement precision and enabling active safety intervention without increasing operational complexity for the user.
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
Ensures accurate determination of injection pressure limits, actively stopping infusion when thresholds are exceeded, thus ensuring patient safety by providing dual monitoring and real-time pressure detection during the infusion process.
Implementation Method 1
a first pressure sensor fixedly provided on the push handle seat
Implementation Method 2
a second pressure sensor attached to the first surface of the membrane piece for detecting a pressure in the infusion tube
Implementation Method 3
a flexible membrane being provided on the first surface of the membrane piece and the flexible membrane being recessed in a direction close to the second surface of the membrane piece
Data Source
AI summary
The disclosure relates to a control method of a syringe pump, a syringe pump and a computer-readable storage medium. In the control method of the syringe pump, by determining whether a pressure of the first pressure sensor is less than a first pressure threshold and actively stopping an injection process when the pressure of the first pressure sensor is greater than or equal to the pressure threshold, it can be achieved to accurately determine whether a subject can bear an injection pressure, and to actively stop the injection and sound an alarm when a pressure in the infusion tube exceeds a bearing limit of the subject, thus ensuring personal safety of the subject. When the pressure of the first pressure sensor is less than the first pressure threshold, it is further determined whether a pressure of the second pressure sensor with higher sensitivity is less than a second pressure threshold, and when the pressure of the second pressure sensor is greater than or equal to the pressure threshold, the injection process can be actively stopped and an alarm can be sounded, thus realizing dual monitoring of the pressure in the infusion tube.