Movable Piston Blood Extraction Device for Vacuum Maintenance
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Solution Overview
Problem
Existing blood extraction and processing devices, such as vacuum tubes, face issues with contamination risk during transfer of blood compounds and loss of vacuum over time, leading to reduced storage capacity and potential contamination from air leakage.
Innovation Solution
A versatile device with a longitudinally moving piston that allows for the creation and maintenance of vacuum, enabling multiple functions such as extraction, storage, and processing, while minimizing transfers and ensuring airtight sealing to prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If vacuum tubes are stored for a period of time before use, then they are ready for immediate use, but the vacuum is gradually lost and storage capacity is reduced
Solution Approach 1:
The vacuum tube incorporates a movable piston that can be positioned at different locations within the tube. When the piston is positioned at the closed end, it maintains the vacuum seal. The dynamic capability of moving the piston allows the system to maintain vacuum integrity throughout storage duration, resolving the contradiction between long-term storage and vacuum maintenance.
2Adaptability or versatility
If multiple transfers are performed between containers during blood processing, then different processing steps can be completed, but contamination risk increases
Solution Approach 1:
The vacuum tube is designed as a multi-functional device that can perform extraction, storage, centrifugation, and application functions within a single container. The tube includes integrated components such as a rotor for centrifugation and a piston for controlled dispensing, eliminating the need to transfer blood between multiple containers and thereby reducing contamination risk while maintaining processing versatility.
3Adaptability or versatility
If the piston can be separated from the device, then the device can function as a simple storage tube, but the device complexity increases
Solution Approach 1:
The vacuum tube is divided into separable components, primarily the piston assembly that can be removed from the tube body. This segmentation allows the tube to function as a simple storage container when the piston is removed, or as an active processing device when the piston is in place. The modular design achieves functional flexibility without excessive complexity through straightforward assembly and disconnection mechanisms.
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 reduces the number of transfers required between containers, maintains optimal vacuum levels, and minimizes contamination risks by allowing for adjustable vacuum and sealed operations, enhancing biosafety and efficiency in medical procedures.
Implementation Method 1
the movement of the piston towards the second end, opposite the conduit, allows the vacuum in the internal space to be created
Implementation Method 2
The movement of the piston towards the first end where the conduit is situated allows the contents of the internal space to be expelled
Data Source
AI summary
Device (1a, 1b, 1c, 1d; 40) for extracting, storing and/or processing blood or other substances of human or animal origin, and for applying blood compounds or other biological compounds, which comprises a body (2; 41) inside which a piston (3; 42) is capable of moving longitudinally and is separable at least in part, where the body (2; 41) is provided with an internal space (9; 51) that may be connected to the outside by means of a conduit (6; 50) at a first end (4; 48) of the body (2; 41), where the body (2; 41) and the piston (3; 43) may be blocked longitudinally in at least one position to allow the creation of different degrees of vacuum. The device has multiple uses and is extremely versatile.