Infusion Pump Door Assembly for Secure Line Fixation
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Solution Overview
Problem
Existing infusion devices face issues such as loose or tight buckles causing blockage, inaccurate bubble detection, wear in liquid stopper mechanisms, and increased production costs due to multiple components.
Innovation Solution
The infusion device features a buckle part with protrusions and grooves for secure line fixation, bubble sensors with reduced gap for accurate detection, a smoothly contoured clamping valve for reduced wear, an infrared recognition assembly for precise positioning, and a simplified loudspeaker assembly with fewer parts for reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the catheter hub is made of rigid or semi-rigid material to maintain structural integrity, then the hub can support connectors and IV bags, but the hub cannot be compressed to a small size for patient portability
Solution Approach 1:
The catheter assembly is divided into distinct segments: a rigid/semi-rigid hub portion for structural support and connector attachment, and a flexible catheter portion for compression and portability. This segmentation allows each part to have optimized properties for its specific function.
Solution Approach 2:
Different portions of the catheter assembly have different material properties - the hub is made of rigid or semi-rigid material where structural integrity is needed, while the catheter tube is made of flexible material where compression and flexibility are needed. This local differentiation resolves the contradiction between strength and portability.
2Volume of moving object
If the catheter hub is made of flexible material to allow compression for portability, then the hub can be compressed to a small size, but the hub cannot support the weight and structure of connectors and IV bags
Solution Approach 1:
The catheter assembly is divided into distinct segments: a rigid/semi-rigid hub portion for structural support and connector attachment, and a flexible catheter portion for compression and portability. This segmentation allows each part to have optimized properties for its specific function.
Solution Approach 2:
Different portions of the catheter assembly have different material properties - the hub is made of rigid or semi-rigid material where structural integrity is needed, while the catheter tube is made of flexible material where compression and flexibility are needed. This local differentiation resolves the contradiction between strength and portability.
3Object-affected harmful factors
If the catheter hub is made of soft flexible material to reduce discomfort at insertion site, then patient comfort is improved, but the hub cannot maintain a stable insertion position
Solution Approach 1:
The catheter assembly uses different material properties in different locations: the hub is rigid or semi-rigid to provide stable insertion positioning, while the portion at the insertion site is soft and flexible to reduce discomfort. This local differentiation of material properties resolves the contradiction between comfort and stability.
Data Source
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AI summary
The present application provides an infusion device, comprising a body, the body is configured to be able to receive an infusion line and includes a pumping mechanism, the pumping mechanism is configured to enable medical fluid to flow through the infusion line received in the body; a pump door assembly, the pump door assembly is configured to be connected to the body for closing the body, and is configured to fix the infusion line in place in the body, the pump door assembly comprises a buckle part, the buckle part comprises buckle protrusions provided at both ends of the buckle part along the longitudinal direction of the buckle part, and top surfaces of the buckle protrusions are shaped to be suitable for receiving the infusion line; a groove, the groove being located at an intermediate position between the buckle protrusions and configured to be recessed in the height direction of the buckle part to be lower than the buckle protrusion.