Nasal Administration Container Plunger Dosing Control
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Solution Overview
Problem
Existing nasal cavity administration containers face challenges in easily and appropriately administering a predetermined dose of medical fluid to both nasal cavities simultaneously.
Innovation Solution
A nasal cavity administration container with a body section, a medical fluid storage section, and a plunger mechanism that includes a moving amount regulation member with stoppers and a pressing part, allowing for precise control of the plunger's movement to ensure equal distribution of the medical fluid between both nasal cavities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a nasal cavity administration container is used to administer medical fluid to both nasal cavities, then the medical fluid can be delivered to both sides, but it is difficult to administer a predetermined dose (e.g., one half for each) to each nasal cavity easily and appropriately
Solution Approach 1:
The plunger is divided into multiple sections with different engagement characteristics. The first plunger section has an engagement projection that fits into an engagement groove on the plunger rod, creating a regulated movement state for precise dosing. The second plunger section can move freely when the regulation member is removed, enabling complete emptying of the container. This segmentation allows the same device to achieve both precise predetermined dosing and complete fluid evacuation.
Solution Approach 2:
The plunger system transitions between two dynamic states: a regulated movement state where the engagement projection fits into the engagement groove, limiting plunger travel to deliver precise predetermined doses; and an unregulated state where the regulation member is removed, allowing the plunger to move freely and completely empty the container. This dynamic adaptability resolves the contradiction between precise dosing control and ease of complete emptying.
2Manufacturing precision
If the plunger moves forward to administer medical fluid, then the fluid is delivered to the nasal cavity, but the movement amount must be precisely controlled to ensure equal distribution
Solution Approach 1:
A plunger movement regulation member serves as an intermediary component between the plunger and the container body. This regulation member includes an engagement groove that receives the engagement projection on the plunger, mediating the plunger's movement to ensure precise control. The regulation member can be selectively attached or removed, providing precise movement control when needed and allowing free movement when the regulation member is removed.
3Adaptability or versatility
If the plunger is pushed into the medical fluid storage section, then the medical fluid is administered, but the plunger moving amount must be regulated for the first administration and then allowed to move freely for the second administration
Solution Approach 1:
The plunger is segmented into a first plunger section with an engagement projection and a second plunger section without the projection. The first section interacts with the regulation member's engagement groove to provide controlled movement for precise dosing. The second section allows the plunger to move freely when the regulation member is removed, enabling complete emptying. This segmentation provides adaptability for different administration modes while maintaining operational simplicity.
Solution Approach 2:
The system dynamically adapts between two operational modes by attaching or removing the regulation member. In the first administration mode, the regulation member is attached to regulate plunger movement for precise dosing. In the second administration mode, the regulation member is removed to allow free plunger movement for complete emptying. This dynamic adaptability enables versatile administration options while keeping the operation simple and intuitive.
Data Source
AI summary
A nasal cavity administration container (100) includes a body section (30) including a medical fluid storage section (10) having an opening (13H) and a plunger (20) having a pressing part (23P), and a plunger moving amount regulation member (40) having a stopper (42) and being engaged with the body section (30), an engagement with the body section (30) being relieved only in a state where the pressing part (23P) abuts on the stopper (42). When the plunger (20) is pushed into the medical fluid storage section (10), the plunger (20) moves forward until the pressing part (23P) abuts on the stopper (42). The plunger (20) is further pushed into the medical fluid storage section (10) with the plunger moving amount regulation member (40) detached from the body section (30). The nasal cavity administration container (100) can administer a medical fluid easily and appropriately.