CO2 Angiography Injector Spring Pre-Compression for Precise Dosing
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Solution Overview
Problem
Existing carbon dioxide injectors lack precise control over the volume, speed, and time of carbon dioxide injection for angiography, leading to discomfort and variability in vascular contrast quality.
Innovation Solution
A method and device that utilize a spring mechanism within a filling tube to pre-compress the spring from a first length to a second length, determining these lengths based on target injection volume and speed, allowing precise control of carbon dioxide injection through a baffle and driving member, enhancing the accuracy and controllability of the injection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple injection function is provided, then device complexity is reduced, but injection volume and speed control precision deteriorates
Solution Approach 1:
The spring is pre-compressed to a specific length before injection based on the target injection volume and speed requirements. This preliminary compression stores potential energy that will be converted to kinetic energy during injection, enabling precise control of injection parameters without complex real-time control systems
Solution Approach 2:
The injection parameters (volume and speed) are controlled by changing the spring compression length parameter. By adjusting the pre-compression distance of the spring, the system can precisely control the injection volume and speed through the relationship between spring potential energy and gas flow rate
2Productivity
If injection speed is increased, then productivity is improved, but injection time is reduced which may affect contrast quality
Solution Approach 1:
The spring is pre-compressed to store the exact amount of energy needed for the desired injection speed and duration. This allows the system to achieve high injection speeds when needed while maintaining precise control over the total injection time, optimizing both productivity and contrast quality
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 method and device enable precise control of carbon dioxide injection volume and speed, improving angiography efficiency and reducing discomfort by shortening injection time and enhancing the quality of vascular contrast.
Implementation Method 1
a piston and a spring for adjusting a capacity of the filling tube are provided within the filling tube... the spring pushes the piston to move when it deforms
Implementation Method 2
it must be injected into the body... dissolves in the blood, can be exhaled, and is non-toxic to the liver and kidneys
Data Source
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AI summary
The present invention provides a method and a device for controlling a carbon dioxide contrast injector and a contrast injector, which belong to the technical field of carbon dioxide angiography. According to the method for controlling a carbon dioxide contrast injector provided in an embodiment of the present invention, a second length of the spring is determined based on the target injection speed, the initial injection speed, and the first length. On the basis of achieving precise control of the contrast injection volume, the pre-compression degree of the spring can be determined, and then the injection speed and injection volume can be precisely controlled to meet the injection requirements in different situations, thereby improving the accuracy and controllability of CO2 angiography, increasing the injection speed, shortening the injection time, and thus improving the efficiency and speed of the contrast process. The spring in the existing structure is fully utilized, and there is no need to provide an additional pressurizing device, etc., which reduces the modification and cost of the device.