Catheter Fixing Device with Dynamic Hub Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing catheter fixing devices fail to prevent the distal end of a catheter from being dislodged from a blood vessel due to body movement, as the fixing position and puncture site change with patient movement.
Innovation Solution
A catheter fixing device with a skin fixation part, a hub fixation part, and a movement mechanism that allows the hub fixation part to move relative to the skin fixation part, maintaining the catheter's position within the blood vessel despite body movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a catheter fixing device is fixed on skin with adhesive tape or a fixed structure, then the catheter can be secured initially, but the fixing position and puncture site change due to body movement causing the distal end of the catheter to come out from the blood vessel
Solution Approach 1:
The patent applies the dynamics principle by introducing a movement mechanism that allows the hub fixation part to move relative to the skin fixation part. This dynamic adjustment capability enables the fixing device to adapt to body movement, preventing the catheter distal end from coming out of the blood vessel while maintaining secure fixation.
2Device complexity
If the hub fixation part is fixed rigidly to the skin fixation part, then the structure is simple and stable, but it cannot compensate for skin movement causing catheter dislodgement
Solution Approach 1:
The movement mechanism introduces controlled mobility between the hub fixation part and skin fixation part, allowing the system to maintain simplicity while gaining the ability to compensate for skin movement. The mechanism provides just enough flexibility to prevent catheter dislodgement without creating excessive complexity.
3Ease of operation
If the fixing device is designed to be immobile, then manufacturing and operation are simple, but it fails to maintain catheter position during patient movement
Solution Approach 1:
The movement mechanism is designed to operate simply while providing essential dynamic adjustment capability. The mechanism allows the hub fixation part to move relative to the skin fixation part in response to body movement, maintaining catheter position without requiring complex operation or control systems.
Data Source
AI summary
A catheter fixing device includes a skin fixation part configured to come into contact with skin, a hub fixation part configured to retain a hub, and a movement mechanism provided between the skin fixation part and the hub fixation part and interlocking the hub fixation part with the skin fixation part such that the hub fixation part and the skin fixation part are movable relative to each other.