Optical Drip Chamber Flow Meter for Precise IV Delivery

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Solution Overview

Problem

Current fluid flow monitoring and regulation systems in medical settings, such as intravenous infusion therapy, often lack precision and reliability, particularly in environments where traditional infusion pumps are not available, leading to potential inaccuracies in fluid delivery rates.

Innovation Solution

A system comprising a flow meter with optical sensors to monitor fluid flow in a drip chamber, coupled with a valve that can be remotely controlled, allowing for real-time adjustments and feedback to ensure accurate fluid delivery, even in the absence of a traditional infusion pump.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If traditional infusion pumps are not available, then device complexity is reduced, but measurement precision and reliability of fluid delivery rates deteriorate

Engineering Contradiction:
Improvedevice complexityVSAvoidfluid delivery rate precision
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent replaces mechanical infusion pumps with an optical sensing system that uses light absorption measurements to monitor and determine fluid delivery rates. The optical sensor detects changes in light absorption as fluid flows through the tube, converting a mechanical delivery system into an optical measurement system that provides precise rate determination without requiring complex pump mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If optical sensors are used to monitor fluid flow, then measurement precision is improved, but device complexity increases

Engineering Contradiction:
Improvefluid flow measurement precisionVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The optical sensing system serves multiple functions: it monitors fluid flow rate, detects free flow conditions, determines drop formation, and provides feedback for rate adjustment. By making the optical sensor multi-functional, the patent reduces the need for separate sensors and components, thereby improving measurement precision without proportionally increasing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system incorporates feedback mechanisms where the optical sensor continuously monitors fluid flow and provides real-time data about delivery rates and drop formation. This feedback enables automatic detection of free flow conditions and allows for precise measurement while maintaining system simplicity through intelligent control algorithms that process the optical data.

Inventive Principle:
Principle #23Feedback

3Reliability

If real-time monitoring and feedback are implemented, then reliability of fluid delivery is improved, but device complexity increases

Engineering Contradiction:
Improvefluid delivery reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a feedback system where the optical sensor continuously monitors fluid flow characteristics and provides real-time information about delivery rates and drop formation. This feedback loop enables the system to detect free flow conditions, adjust monitoring parameters, and ensure reliable fluid delivery without requiring complex mechanical control mechanisms, as the reliability is achieved through intelligent data processing and analysis.

Inventive Principle:
Principle #23Feedback

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 system provides precise monitoring and regulation of fluid flow, preventing free flow conditions and ensuring delivery rates are within predetermined ranges, thereby enhancing the accuracy and safety of fluid administration in medical treatments.

Implementation Method 1

A flow meter with optical sensors to monitor fluid flow in a drip chamber

Methodology Applied
Scientific EffectOptical absorption: Absorption (EM radiation)

Data Source

PatentUS11793928B2Flow meter and related method
Publication Date: 2023.10.24 DEKA PRODUCTS LP
  • US11793928B2 patent drawing
  • US11793928B2 patent drawing
  • US11793928B2 patent drawing

AI summary

A system for regulating fluid flow having a processor configured to reduce image noise is provided. The system includes an image sensor to capture an image of the drip chamber. The processor captures the image of the drip chamber using the image sensor, performs an edge detection on the image to generate a first processed image, and performs a Boolean-operation on a pixel on a first side of an axis of the first processed image with a corresponding pixel on a second side of the axis of the first processed image to generate a second processed image.