Nasal Catheter Guide Wall Eccentric Spray
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Solution Overview
Problem
Nasal catheters currently apply pressure to the nasal septum when spraying medicinal or irrigation fluids, leading to bleeding, and existing designs do not effectively reduce this pressure or prevent tissue damage.
Innovation Solution
A nasal catheter with a guide wall portion formed at the inner side of the front end of the tube main body, allowing fluids to be sprayed in a direction parallel to the nasal meatus, reducing pressure on the nasal septum, and featuring an identifier to determine the guide wall position for accurate insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional nasal catheter is used to spray medicinal fluid or irrigation fluid, then the nasal cavity can be irrigated and disinfected, but pressure is applied to the nasal septum causing bleeding
Solution Approach 1:
The catheter incorporates a guide wall portion at a specific location (front end inner portion) that creates an eccentric spray pattern. This local structural modification directs the fluid spray away from the nasal septum while maintaining irrigation effectiveness in the nasal meatus area.
Solution Approach 2:
The guide wall portion creates an asymmetric flow channel within the catheter, resulting in eccentric spray directions. The spray is deliberately directed to one side (parallel to nasal meatus) rather than centrally, avoiding the nasal septum and preventing bleeding while maintaining irrigation function.
2Productivity
If the catheter is inserted to spray fluid effectively, then irrigation function is achieved, but tissue damage and bleeding occur due to pressure on nasal septum
Solution Approach 1:
The guide wall is positioned at the front end inner portion of the catheter to locally modify the spray pattern. This creates an eccentric flow that directs fluid away from the nasal septum, preventing tissue damage while maintaining overall irrigation efficiency through the nasal meatus.
Solution Approach 2:
The design converts what would normally be direct forward spray (potentially harmful to the septum) into an eccentric spray pattern that bypasses the septum entirely. The guide wall transforms the harmful direct pressure into beneficial lateral flow that achieves irrigation without tissue damage.
3Object-affected harmful factors
If a guide wall portion is added to redirect spray away from nasal septum, then pressure on nasal septum is reduced, but device complexity increases
Solution Approach 1:
The catheter is segmented into distinct functional zones: the guide wall portion at the front end, the main body, and the connection interface. This segmentation allows the guide wall to be a simple additive component rather than a complete redesign, minimizing complexity increase while achieving the pressure reduction goal.
Solution Approach 2:
Rather than redesigning the entire catheter structure, only a local portion (the front end inner portion) is modified with the guide wall. This localized modification keeps the overall device complexity low while effectively redirecting the spray to reduce nasal septum pressure.
4Measurement precision
If an identifier is added to indicate guide wall position, then correct positioning is improved, but manufacturing complexity increases
Solution Approach 1:
The identifier is implemented as a visual marker (colored band, printed mark, or contrasting material) on the catheter exterior. This allows precise positioning to be indicated through color or visual contrast, which can be easily applied during manufacturing through printing, coloring, or attaching simple markers, minimizing impact on manufacturing complexity.
Data Source
AI summary
The present invention relates to a nasal catheter with a guide wall, and more particularly, to a nasal catheter with a guide wall, the nasal catheter including a tube main body which is connected to one end of each shaft of a device spraying a medicinal fluid or irrigation fluid and an aspiration device performing aspiration inside a nasal cavity and which is inserted into the nasal cavity and a guide wall portion which is configured to form a slope at one side of an inner portion of a front end portion of the tube main body to allow the medicinal fluid or irrigation fluid to be sprayed in an eccentric direction.