Catheter Pump Flushing Valve Layout for Complete Air Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medical catheter pumps face challenges in thoroughly eliminating air bubbles due to the long flushing pipeline, making it difficult to ensure complete air removal during the priming process.
Innovation Solution
A ventricular assist system with a first and second three-way valve configuration allows for separate priming and flushing of different positions, including the inner cavity and flushing paths, using distinct conduction states and a rapid flushing assembly to enhance air removal efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If overall flushing is performed on the flushing pipeline and medical catheter pump, then the flushing process is simplified, but air bubbles cannot be thoroughly eliminated
Solution Approach 1:
The patent divides the flushing system into multiple independent flushing paths (first flushing path, second flushing path, third flushing path) with separate control valves. This segmentation allows each path to be flushed independently, ensuring thorough air removal from all areas including the medical catheter pump inner cavity, while maintaining operational simplicity through automated control.
2Device complexity
If a single flushing path is used, then the device structure is simplified, but air bubbles in different positions cannot be effectively removed
Solution Approach 1:
The patent implements multiple flushing paths with dedicated control valves for each path. The first flushing path flushes the flushing pipeline, the second flushing path flushes the medical catheter pump, and the third flushing path provides additional flushing capability. This segmented approach ensures effective air removal from all positions while the control system manages the complexity.
Solution Approach 2:
The patent uses controllable valves that can dynamically switch between different flushing paths based on the priming stage. During different priming stages, different valve combinations are activated to direct flushing liquid through appropriate paths, adapting the system configuration to the specific flushing requirements of each stage.
3Loss of time
If flushing liquid flows through the entire system at once, then the priming time is reduced, but air bubbles remain in narrow gaps
Solution Approach 1:
The patent implements a multi-stage priming process where preliminary flushing of the flushing pipeline is performed before flushing the medical catheter pump. This preliminary action ensures that the flushing liquid is ready and the pipeline is clear, allowing subsequent thorough flushing of the pump inner cavity without time loss, as the system is prepared in advance.
Solution Approach 2:
The patent uses periodic flushing cycles with different valve configurations to systematically remove air bubbles from different locations. The control system alternates between different flushing paths and adjusts flow rates periodically, ensuring that narrow gaps and all areas are thoroughly flushed over multiple cycles, achieving complete air removal without excessive time loss.
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 system effectively exhausts air from various positions within the catheter pump, preventing residual air bubbles and improving the overall priming and flushing efficiency.
Implementation Method 1
a flushing pump assembly 210, a first three-way valve 220, a second three-way valve 230, and a medical catheter pump 240... the first valve port 221 is connected to a first flushing path driven by the flushing pump assembly
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present application discloses a ventricular assist system, a flushing method, a consumable material, a control apparatus, and a control device for a medical catheter pump system, and belongs to the technical field of medical devices. In the ventricular assist system, the first three-way valve includes a first valve port, a second valve port, and a third valve port, wherein the first valve port is connected to a first flushing path driven by the flushing pump assembly, and the second valve port is connected to a first flushing interface of the medical catheter pump; the second three-way valve includes a fourth valve port, a fifth valve port, and a sixth valve port, wherein the fourth valve port is connected to a second flushing path driven by the flushing pump assembly, and the fifth valve port is connected to a second flushing interface of the medical catheter pump.