Continuous Suction Mechanism With Reperfusion and Pressure Control
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Solution Overview
Problem
Existing suction devices, such as syringes, are not intuitive to use, provide limited blood suction capacity, require frequent emptying, lead to blood loss due to lack of reperfusion, exceed ergonomic limits, and lack control over suction pressure, necessitating multiple steps and increased procedure time.
Innovation Solution
A hand-operated suction device with a barrel, plunger, and handle assembly that allows for continuous suction and reperfusion, featuring a magnetic coupling and biasing mechanism for ergonomic operation, enabling single-handed control and adjustable suction force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a traditional syringe is used for suction, then the device structure is simple, but the blood suction capacity is limited and requires frequent emptying
Solution Approach 1:
The suction device is divided into two separate barrels (first barrel and second barrel) that can be independently filled and emptied. This segmentation allows continuous suction operation - while one barrel is being used, the other can be emptied, eliminating the need to stop suction for emptying and effectively doubling the blood suction capacity before requiring attention.
2Stress or pressure
If manual suction devices are used, then the device structure is simple, but the operation exceeds ergonomic limits and lacks control over suction pressure
Solution Approach 1:
The plunger in each barrel is equipped with a spring mechanism that provides dynamic, adjustable resistance during the suction process. This allows the operator to control suction pressure by adjusting the spring tension, enabling precise pressure control while maintaining ergonomic operation through the mechanical advantage of the spring-loaded system.
3Loss of substance
If traditional suction devices are used, then the device structure is simple, but reperfusion is not provided leading to blood loss
Solution Approach 1:
The device incorporates both suction and reperfusion functions within the same barrel system. Each barrel has inlet ports for suction and outlet ports for reperfusion, allowing the device to perform multiple functions (suction and blood return) without requiring separate devices, thereby preventing blood loss while maintaining relatively simple structure.
4Productivity
If traditional suction devices require multiple steps, then the device structure is simple, but the procedure time increases
Solution Approach 1:
The dual-barrel design enables continuous suction action without interruption. While one barrel is actively suctioning, the other can be prepared or emptied in the background, eliminating downtime between suction cycles. This continuity significantly reduces procedure time compared to single-barrel devices that require stopping and resetting.
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 provides continuous suction with adjustable pressure, reduces blood loss by reperfusion, and decreases procedure time by allowing single-handed operation and continuous fluid aspiration without the need for component reattachment.
Implementation Method 1
movement of the plunger within the cavity is configured to simultaneously draw fluid in through at least one of the first and second inlets and expel fluid through at least one of the first and second outlets
Implementation Method 2
The plunger includes a magnetic material... the handle assembly is magnetically coupled to the plunger
Data Source
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AI summary
A suction device configured to simultaneously draw in fluid and expel fluid. The suction device may comprise a barrel defining a cavity and extending from a first end to a second end. A first fluid inlet may be adjacent the first end of the barrel and a second fluid inlet adjacent the second end of the barrel and a first fluid outlet may be adjacent the first end of the barrel and a second fluid outlet adjacent the second end of the barrel. A plunger may be slideably disposed within the cavity of the barrel with a handle assembly operably coupled thereto. A actuation of the handle assembly may be configured to move the plunger within the cavity between the first end and the second end of the barrel.