Self-contained Blood Extraction Device for Hazardous Fluid Transfer
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Solution Overview
Problem
Conventional methods for transferring blood from a vacutainer to a testing device pose risks of pathogen exposure, contamination, and inaccurate testing due to manual handling and the need for trained professionals, which delays diagnostic processes in point-of-care settings.
Innovation Solution
A self-contained extraction device with a fluid control module, actuator, and receiving element that automatically withdraws and transfers a predetermined volume of blood from a vacutainer to a testing device without removing the cap or using an exposed needle, reducing exposure risks and ensuring consistent sample delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual blood withdrawal from vacutainer is performed, then blood sample can be transferred to testing device, but user exposure to pathogens and contamination risk increases
Solution Approach 1:
The device introduces a receiving element with a puncture member as an intermediary between the vacutainer and the user. The puncture member penetrates the vacutainer seal to establish fluid communication, allowing blood transfer without the user directly handling or breaking the seal, thus reducing exposure risk while maintaining operational capability
Solution Approach 2:
The device enables self-contained operation where the system performs its own blood withdrawal function through integrated suction mechanisms and controlled dispensing. The device autonomously manages the blood transfer process from vacutainer to testing device without requiring trained professional intervention, improving both safety and accessibility
2Ease of operation
If cap removal and exposed needle usage are employed, then blood transfer can be performed, but contamination risk and pathogen exposure increase
Solution Approach 1:
The receiving element acts as an intermediary that maintains the vacutainer cap seal integrity while enabling blood transfer. The puncture member creates a controlled access point through the seal without requiring cap removal, and the controlled dispensing mechanism transfers blood without exposed needles, eliminating both contamination vectors while preserving transfer efficiency
Solution Approach 2:
The device extracts only the necessary function of blood transfer while removing dangerous elements (cap removal, exposed needles). The system achieves blood transfer by extracting blood through a sealed puncture mechanism and delivers it through controlled dispensing, separating the transfer function from the hazardous manual handling steps
3Productivity
If manual blood transfer is performed, then blood sample can be delivered to testing device, but diagnostic time increases due to need for trained professionals
Solution Approach 1:
The device performs self-contained operation with integrated blood withdrawal, volume control, and dispensing functions. The system autonomously completes the blood transfer process without requiring trained professional skills, enabling untrained users to perform diagnostics rapidly while maintaining consistent, reliable operation
Solution Approach 2:
The device controls blood transfer through predetermined volume settings and automated dispensing parameters. By fixing key parameters (blood volume, transfer timing, dispensing rate), the system eliminates the need for professional judgment and skill, allowing rapid operation by any user while ensuring consistent diagnostic-quality sample delivery
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 device minimizes user exposure to hazardous fluids, reduces contamination risks, and facilitates rapid diagnostic testing by enabling controlled, metered blood transfer, thus improving the efficiency and accuracy of point-of-care diagnostics.
Implementation Method 1
the suction element is in a second state having negative pressure, the negative pressure withdrawing at least a portion of the biological fluid from the sample collection container
Implementation Method 2
a spring element positioned between the suction element and the reaction surface, the spring element compressed when the suction element transitions from the first state toward the second state
Implementation Method 3
an actuator configured to induce movement of the suction element when actuated, the movement of the suction element withdrawing the biological fluid from the sample collection container and transferring the biological fluid to the outlet
Data Source
AI summary
The present technology is directed to extraction devices, systems, and methods for controllably withdrawing and transferring fluid samples, such as blood, from a sample collection container to a testing device. For example, some embodiments of the present technology provide fluid extraction devices that include a fluid control module, a housing containing a receiving element and a suction element, and an actuator. To transfer blood from a sample collection container to a testing device, a user places the sample collection container over the receiving element and inserts the testing device into an outlet of the fluid control module. The user then pushes a lever or otherwise actuates the actuator, which automatically withdraws a predetermined volume of blood from the sample collection container and transfers it to the testing device positioned at the outlet of the fluid control module.