Blister Bag Packaging Optical Detection and Feedback Control

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Solution Overview

Problem

Existing packaging systems for individual medication doses often produce defective blister bags due to systematic errors in data application, such as misprinted or unreadable information, which can lead to a large number of defective bags being produced before errors are detected.

Innovation Solution

An apparatus and method that includes storage and dispensing stations, a guide and collection arrangement, a packaging station with a control device, an optical detection device, and an evaluation device to detect and correct deviations in blister bag characteristics, such as data application location and medication dose count, allowing for real-time detection and prevention of defective bag production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If packaging systems operate continuously without real-time detection, then productivity is maintained, but the number of defective blister bags increases due to undetected systematic errors

Engineering Contradiction:
Improvequality of blister bagsVSAvoidproduction speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent implements real-time optical detection of blister bag characteristics (such as data application location and medication dose count) with immediate feedback to the control device. When deviations are detected, the system can stop or adjust the packaging process, preventing the production of defective bags while maintaining overall productivity through continuous monitoring and rapid response.

Inventive Principle:
Principle #23Feedback

2Manufacturing precision

If systematic errors in data application occur, then manufacturing precision deteriorates, but the errors go undetected leading to large numbers of defective bags

Engineering Contradiction:
Improveaccuracy of data applicationVSAvoiddetection of errors
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent replaces manual inspection with an optical detection device that automatically and continuously monitors blister bag characteristics. This optical system detects deviations in data application location and medication dose count with high precision, enabling real-time identification of systematic errors before they result in large numbers of defective products.

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

3Manufacturing precision

If real-time optical detection is implemented, then manufacturing precision is improved through accurate detection, but device complexity increases

Engineering Contradiction:
Improvedetection accuracy of blister bag characteristicsVSAvoidcomplexity of packaging system
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The optical detection device serves multiple functions: it detects data application location accuracy, verifies medication dose count, and identifies systematic errors. By consolidating these detection functions into a single integrated system with immediate feedback to the control device, the patent achieves high manufacturing precision without proportionally increasing device complexity.

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

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 effectively reduces the number of defective blister bags by detecting and correcting errors in real-time, ensuring accurate data application and correct medication dosing, thereby maintaining production quality and preventing large-scale defects.

Implementation Method 1

an optical detection device coupled with the control device and configured to optically detect characteristics of an individual blister bag of the strand

Methodology Applied
Scientific EffectOptical detection: Light

Data Source

PatentUS11059616B2Apparatus for packaging individual medication doses and method for its operation
Publication Date: 2021.07.13 CAREFUSION GERMANY 326
  • US11059616B2 patent drawing
  • US11059616B2 patent drawing
  • US11059616B2 patent drawing

AI summary

An apparatus and method for packaging individual medication doses in blister bags includes a plurality of storage and dispensing stations, at least one guide and collection arrangement for picking up the medication doses and passing them on, or conducting them, to a packaging station, the packaging station forming a strand of connected blister bags from packaging material. Also included is a labeling and printing station for applying data to the packaging material, an optical detection device that optically detects characteristics of the individual blister bags of the strand, an evaluation device that compares the characteristics detected for an individual blister bag with reference characteristics, and a storage station that stores the strand of the blister bags in an ordered manner.