Body Fluid Component Separator With Pressure-Balanced Piston
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Solution Overview
Problem
Existing body fluid component separating devices struggle to maintain a pressure balance between spaces while moving a piston, and they lack the ability to set the piston at an arbitrary position based on the desired capacity of the target fluid to be separated.
Innovation Solution
A body fluid component separating device with a manipulator that adjusts the piston's movement to maintain pressure balance between spaces and allows fixation at arbitrary positions, featuring a shaft with male and female engagement elements, a handle, and an indicator with a tube and insert to guide fluid flow and filter structure for precise separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the piston is moved to separate body fluid components, then the separation function is improved, but the pressure balance between spaces is disrupted
Solution Approach 1:
The device divides the housing into multiple sealed spaces (first space, second space, third space) separated by pistons. Each space can be independently controlled, allowing the system to maintain pressure balance in one space while performing separation in another. The segmentation enables independent pressure control for each compartment during the separation process.
Solution Approach 2:
The patent introduces a manipulator as an intermediary mechanism between the operator and the piston. This manipulator includes pressure control functionality that mediates the movement of the piston while maintaining pressure balance. The manipulator acts as an intermediate control system that coordinates piston movement with pressure regulation.
2Quantity of substance
If the piston position is fixed to control separation volume, then the capacity control is improved, but the device complexity increases
Solution Approach 1:
The manipulator is designed to perform multiple functions: it can move the piston to desired positions, fix the piston at arbitrary locations, and control pressure balance. This multi-functional design eliminates the need for separate mechanisms for each function, reducing overall device complexity while achieving precise capacity control.
Solution Approach 2:
The system transitions from a static piston position to a dynamic, adjustable piston position controlled by the manipulator. The piston can be moved to various positions depending on the required separation capacity, and then fixed at the desired position. This dynamic control allows flexible adaptation to different separation needs without requiring multiple fixed-position devices.
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 effectively maintains pressure balance during piston movement and allows for precise separation of target fluids like platelet-rich plasma and bone-marrow cell concentrate by adjusting the piston position, ensuring accurate volume ratios and minimizing fluid loss.
Implementation Method 1
maintaining a pressure balance between the first space and the second space
Implementation Method 2
maintaining a pressure balance between the first space and the second space
Data Source
AI summary
A body fluid component separating device according to an embodiment may comprise: a housing; a piston which divides the housing into a first space and a second space and connects the first space and the second space via fluid-connection; and a manipulator which is coupled to the piston to be operable and is configured to maintain a pressure balance between the first space and the second space, adjust movement of the piston between a first location at which the first space has a first volume and a second location at which the first space has a second volume that is different from the first volume, and fix the piston on an arbitrary location between the first location and the second location.