Automated Blood Sampling Cartridge With Syringe Pump
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Solution Overview
Problem
Current automated blood sampling methods are inefficient and invasive, requiring multiple needle insertions, leading to trauma, fluid wastage, and increased risk of infection, especially in pediatric and neonatal care, and lack a convenient and portable solution for continuous monitoring.
Innovation Solution
A replaceable, sterilized cartridge system for automated blood sampling devices that includes connectors for catheters, sample collection containers, and saline bags, integrated with a syringe pump and valves, allowing for remote and continuous fluid sampling with reduced personnel intervention and mobility for patients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual blood sampling methods are used, then fluid samples can be collected, but trauma, fluid wastage, and infection risk increase
Solution Approach 1:
The system uses an automated syringe pump to perform blood sampling without requiring manual needle insertions. The syringe pump automatically draws blood through catheters, eliminating the need for repeated manual sticks and reducing both trauma and infection risk while maintaining sampling capability
Solution Approach 2:
The patent replaces manual mechanical needle insertion with an automated syringe pump system. The syringe pump uses controlled mechanical movement to draw blood through existing catheters, substituting the traumatic manual sticking process with a controlled automated fluid extraction system
2Productivity
If automated blood sampling is implemented, then sampling efficiency improves, but device complexity increases
Solution Approach 1:
The system is divided into modular components including a syringe pump unit, a cartridge containing catheters and sample collection vials, and a control system. This segmentation allows the complex automated sampling function to be achieved through coordinated simple modules, making the system manageable and maintainable while preserving sampling efficiency
Solution Approach 2:
The syringe pump serves multiple functions: it draws blood samples, delivers saline flushes, and controls fluid flow through the system. This multi-functionality reduces the need for separate devices for each operation, thereby managing system complexity while maintaining high sampling productivity
3Measurement precision
If patients are kept stationary for sampling, then sampling accuracy improves, but patient mobility and stress increase
Solution Approach 1:
The automated syringe pump system performs all sampling operations autonomously without requiring patient cooperation or immobility. The system self-regulates fluid flow and timing, allowing patients to remain mobile while maintaining precise temporal sampling accuracy through automated control
4Quantity of substance
If multiple needle insertions are performed, then sufficient blood samples can be obtained, but trauma and infection risk increase
Solution Approach 1:
The system uses continuous catheters that remain in place for multiple sampling events, allowing repeated blood draws without repeated needle insertions. The syringe pump continuously manages fluid flow between the catheters and sample vials, enabling multiple samples to be obtained through a single initial insertion, thereby reducing trauma and infection risk while maintaining adequate sample volume
Data Source
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AI summary
A cartridge for an automated blood sampling system for collecting samples and a method of sampling fluids from a test subject using an automated blood sampling apparatus including a cartridge are disclosed.