Concave Insert Base for Complete Hemodialysis Solubilization
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Solution Overview
Problem
Existing container inserts for hemodialysis solutions, particularly those with flat bottoms or protruding elements, fail to completely empty the container as solid products accumulate in nooks and corners, leading to incomplete solubilization and residual salt deposits.
Innovation Solution
A concave internal face on the bottom of the insert with openings at the lowest points, forming hollows to ensure all solid products are within the liquid flow, and optional reinforcements for structural stability and connection to hemodialysis machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat bottom is used in the container insert, then the manufacturing is simple, but solid products accumulate in nooks and corners leading to incomplete solubilization
Solution Approach 1:
The bottom of the insert is designed with a concave curvature instead of a flat surface, creating a hollow depression that directs solid products toward the opening. This curved geometry eliminates nooks and corners where solids could accumulate, ensuring complete solubilization while maintaining manufacturing simplicity through mold-based formation.
2Strength
If reinforcing ribs are added to the wall perpendicular to the bottom, then the structural stability is improved, but nooks are created that retain solid product
Solution Approach 1:
Instead of adding reinforcing ribs that create harmful nooks, the invention uses localized thickening of the wall material in specific areas to provide structural support. This maintains the necessary strength and stability of the perpendicular wall while preserving the smooth concave surface that prevents solid product accumulation.
3Productivity
If openings are made in the bottom for liquid flow, then solubilization efficiency is improved, but solid products may accumulate between openings
Solution Approach 1:
The concave hollow depression in the bottom creates a funnel-like effect that directs all solid products toward the opening(s). This curvature ensures that solids naturally migrate to the lowest point where liquid flow is strongest, preventing accumulation between or behind openings and ensuring complete solubilization.
Data Source
Figure 1~2
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Figure 6~7
AI summary
The invention relates to an insert for a receptacle designed to contain a concentrated product in solid or liquid form, comprising a main part (1) formed by a base (2) that is continued at the edge by a wall (3) perpendicular to the base, an opening (4) being formed in the base. The invention also relates to a receptacle provided with an insert according to the invention. The object of the invention is to develop an insert that allows the receptacle to be completely emptied without leaving dead spaces in which the products to be dissolved can gather. This object is achieved, according to the invention, by the fact that the face of the base (2) designed to be situated in the receptacle after assembly, and called the inner face, is concave in the area of the opening, such that the latter is situated at the bottom of a hollow space (6). This avoids the formation of niches in which the liquid does not circulate, or does not circulate enough. The solid product is unable to gather anywhere other than in the hollow space, such that it is always exposed to the stream of liquid.