Bubble Separation Device for Injectable Drugs

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Solution Overview

Problem

Conventional intravenous injection technologies fail to effectively separate bubbles from injectable solutions, leading to potential vascular occlusion and interference with blood flow.

Innovation Solution

A device with an inlet port, an outlet port, and a bubble separating portion that enlarges the passage cross-sectional area to separate bubbles from the injectable solution, utilizing a mesh portion to enhance bubble separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional intravenous injection is used, then the injection process is simple and quick, but bubbles cannot be separated from the injectable solution leading to vascular occlusion risk

Engineering Contradiction:

Improvebubble separation capabilityVSAvoidinjection device structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bubble separating portion is nested within the injection device body, with the mesh portion embedded inside the bubble separating portion. This nested structure allows multiple functions (bubble separation, filtration, fluid passage) to be integrated in a compact form, improving reliability without significantly increasing overall device complexity

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

A mesh portion with porous structure is introduced into the injection device. The mesh acts as a physical barrier that allows liquid to pass through while blocking bubbles. This use of porous material provides effective bubble separation capability while maintaining a relatively simple device structure

Inventive Principle:

Principle #31Porous materials

2Reliability

If the passage cross-sectional area is enlarged in the bubble separating portion, then bubble separation efficiency is improved, but the device volume increases

Engineering Contradiction:

Improvebubble separation efficiencyVSAvoidbubble separating portion volume

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

The bubble separating portion is designed with a three-dimensional structure that expands in multiple dimensions rather than simply increasing linear length. This allows the passage cross-sectional area to be enlarged for better bubble separation while controlling the overall volume by utilizing spatial arrangement in different dimensions

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If a mesh portion is added to enhance bubble separation, then bubble removal capability is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvebubble removal capabilityVSAvoiddevice manufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The mesh portion is implemented using porous material that can be manufactured through standard industrial processes. The mesh structure provides effective bubble removal capability while being manufacturable with conventional techniques, thus improving reliability without excessively increasing manufacturing complexity

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The mesh portion parameters (pore size, mesh density, material properties) are optimized to achieve effective bubble separation. By carefully selecting and adjusting these parameters, the device achieves high bubble removal capability while maintaining ease of manufacture through standardized production methods

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The device reliably prevents bubbles from entering the bloodstream, improving the stability of injectable solutions during administration and enhancing user convenience by integrating seamlessly with conventional infusion sets.

Implementation Method 1

a mesh portion provided in a passage of the inlet port or a passage of the bubble separating portion

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 2

a bubble separating portion provided between the inlet port and the outlet port, and having a passage cross-sectional area more enlarged than the passage cross-sectional area of the first tube

Methodology Applied

Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Data Source

PatentUS20250177658A1Device for separating bubbles from injectable drugs

Publication Date: 2025.06.05 CHUNGMED CO LTD

AI summary

The device for separating bubbles from an injectable drug is disclosed, which prevents the bubbles from entering a blood vessel when the injectable solution is delivered to a vein. This device improves the stability of the injectable solution when administered to a human body, and the device is easily added to a conventional infusion or injectable solution sets, thereby improving user convenience and efficiency.