Catheter Valve With Elastic Sealing Disk Prevents Blood Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing arterial catheter devices experience significant blood leakage when changing catheters or connecting supply devices, leading to inefficient and laborious handling processes.
Innovation Solution
A flexible tube connected to the catheter's proximal end with a valve featuring an elastic sealing disk and a slotted design allows the guide wire to be inserted and withdrawn without significant blood leakage, enabling easy catheter changes and supply connections without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the catheter is changed or supply device is connected after guide wire removal, then the catheter can be replaced or supplied, but blood leaks significantly from the catheter
Solution Approach 1:
The valve is pre-positioned in the catheter hub to automatically close upon guide wire removal, preventing blood leakage before any intervention occurs. This preliminary protective action eliminates the need for manual closure operations during catheter changes or supply connections.
Solution Approach 2:
The valve system operates autonomously - it automatically closes when the guide wire is pulled out and remains closed during catheter changes or supply device connections, only opening when intentionally activated. This self-regulating mechanism prevents blood leakage without requiring manual intervention.
2Loss of substance
If a valve with closure element is integrated into the catheter hub, then blood leakage can be prevented, but the handling becomes laborious and complex
Solution Approach 1:
The valve automatically closes when the guide wire is removed and remains closed during all subsequent operations, eliminating the need for manual closure operations. The system self-regulates without requiring operator intervention to maintain the closed state.
Solution Approach 2:
The valve serves multiple functions: it prevents blood leakage during catheter changes, maintains seal during supply device connections, and allows intentional opening when needed. This multi-functional design simplifies handling by providing a single component that manages all closure requirements.
3Ease of operation
If the valve is connected via flexible tube to the catheter hub, then comfortable manual handling is enabled, but the device complexity increases
Solution Approach 1:
The flexible tube acts as an intermediary element between the valve and catheter hub, providing mechanical flexibility and ease of handling while maintaining the functional integrity of the connection. This mediator allows comfortable manual manipulation without compromising the sealing function.
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 solution effectively prevents blood leakage during catheter changes and supply connections, ensuring safe and simple handling by maintaining a sealed environment until the pressure measuring system is connected, reducing the risk of blood loss and simplifying the process.
Implementation Method 1
the valve closure element advantageously consists of an elastic sealing disk provided with a slit, which closes the proximal end of the catheter
Data Source
Figure 1~2b
Figure 3~4
AI summary
In a catheter device having a catheter capillary (Ib) at the distal end of a catheter base (1a) and an automatic closure valve (4) at the proximal end, a closure element (5) of the valve (4) is designed in such a way that a guide wire (7) can be pushed from the distal side through the closure element .