Constant Force Syringe Vacuum Chamber Mechanism
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Solution Overview
Problem
Existing medical injector systems are complex and expensive, making it difficult for medical professionals to administer fluids at a consistent rate, which can damage biological cells and affect treatment efficacy.
Innovation Solution
A syringe system with a vacuum chamber and multiple plungers that use a piston mechanism to maintain a uniform fluid delivery rate, independent of user pressure, by altering the volume compartments within the syringe to regulate pressure differences and ensure steady fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manually activated syringe is used to administer fluid, then the device is simple and inexpensive, but the fluid cannot be administered at a constant rate
Solution Approach 1:
The patent employs a vacuum chamber system with pneumatic pressure differentials to control fluid delivery. A vacuum pump creates negative pressure in the vacuum chamber, which regulates fluid flow through the syringe barrel. This pneumatic mechanism ensures constant rate administration while keeping the overall device structure relatively simple and inexpensive.
2Reliability
If existing injector systems are used to ensure constant rate administration, then constant rate is achieved, but the systems are complicated and expensive
Solution Approach 1:
The device segments the syringe system into distinct functional components: a vacuum chamber separate from the syringe barrel, a vacuum pump module, and a control mechanism. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining constant rate administration capability.
Solution Approach 2:
The vacuum chamber acts as an intermediary between the vacuum pump and the syringe barrel. It receives the vacuum pressure from the pump and transmits it to the fluid in the syringe, regulating flow through pressure differentials. This intermediary component simplifies the system by providing a dedicated pressure regulation zone.
3Productivity
If high pressure or high flow rate is used during injection, then fluid is delivered quickly, but biological cells may be damaged
Solution Approach 1:
The vacuum pump continuously monitors and adjusts the vacuum level in the vacuum chamber based on feedback from pressure sensors. This feedback mechanism ensures that the pressure differential remains within safe limits to prevent cell damage while maintaining adequate fluid delivery speed. The system automatically regulates to prevent excessive pressure buildup.
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 syringe system allows for smooth and consistent administration of fluids at a controlled rate, reducing the risk of cell damage and improving treatment efficacy while simplifying the administration process.
Implementation Method 1
a vacuum chamber disposed within the hollow lumen of the syringe body
Implementation Method 2
by altering the volume compartments within the syringe to regulate pressure differences and ensure steady fluid flow
Implementation Method 3
the piston configured to move the second plunger within the vacuum chamber, thereby altering a volume of the proximal volume compartment and a volume of the distal volume compartment
Data Source
AI summary
Various syringe systems are disclosed. One such syringe system may include a body having a hollow lumen and a distal end, a vacuum chamber disposed within the hollow lumen of the syringe body, a first plunger connected to a distal portion of the vacuum chamber, the first plunger forming a first seal against an inner surface of the syringe body and defining a fluid delivery volume between the first plunger and the distal end of the syringe body, a second plunger disposed within the vacuum chamber, the second plunger forming a second seal against an inner surface of the vacuum chamber and defining a proximal and distal volume compartments within the vacuum chamber, and a piston affixed to the second plunger, the piston configured to move the second plunger within the vacuum chamber, thereby altering a volume of the proximal volume compartment and a volume of the distal volume compartment.