Automated Medication Dispensing with Adaptive Vacuum Gripper
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Solution Overview
Problem
The manual dispensing of medications in healthcare settings is time-consuming and prone to errors, and while automation can improve efficiency and accuracy, it can be costly and not justified for low-frequency or low-risk operations, particularly due to the need for customized dispensing solutions for various medication types and sizes.
Innovation Solution
An automated dispensing system featuring an end-of-arm tool with movable vacuum cups and a controller that adjusts suction levels and positions based on the size, shape, and weight of medications, using scanning technology to identify articles and determine the appropriate vacuum cup configuration for precise retrieval and dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated dispensing systems are implemented, then dispensing accuracy and efficiency are improved, but system cost and complexity increase
Solution Approach 1:
The end-of-arm tool is designed with multiple vacuum cups of different sizes that can be selectively activated to handle various medication types and sizes with a single device, eliminating the need for multiple specialized dispensing mechanisms and reducing overall system complexity while maintaining high accuracy
Solution Approach 2:
The system dynamically adjusts vacuum suction strength and vacuum cup selection based on the detected size and weight of the medication, allowing a single automated system to adapt to different dispensing requirements without requiring multiple fixed-configuration devices
2Adaptability or versatility
If multiple vacuum cups are used to handle different medication sizes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The end-of-arm tool features dynamically adjustable vacuum cups that can extend or retract based on the medication size, allowing the same tool to accommodate various dimensions without requiring multiple fixed-size cups, thereby reducing structural complexity while maintaining versatility
Solution Approach 2:
The system automatically selects and activates the appropriate vacuum cups based on sensor detection of medication characteristics, eliminating the need for manual configuration or complex mechanical switching mechanisms, thus simplifying the device while enhancing adaptability
3Reliability
If verification steps are added to ensure medication accuracy, then dispensing reliability is improved, but dispensing time increases
Solution Approach 1:
The system performs verification by scanning and identifying the medication before the dispensing action occurs, allowing accuracy checks to be completed in advance during the retrieval process rather than as a separate post-dispensing step, thereby maintaining high reliability without adding time to the overall dispensing cycle
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 enhances the efficiency and accuracy of medication dispensing by adapting to different medication types and sizes, reducing errors and costs through automated and customizable handling, thereby improving the overall medication distribution process in healthcare facilities.
Implementation Method 1
two or more vacuum cups extending from the body, where the two or more vacuum cups are movable toward and away from the body of the end-of-arm tool; a vacuum source configured to provide suction to each of the two or more vacuum cups
Data Source
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AI summary
An automated dispensing system is provided, which comprises: a controller configured to process a request for one or more articles to be dispensed; one or more storage modules comprising a plurality of moveable trays stacked vertically, each of the moveable trays comprising one or more storage locations to hold the one or more articles; a loading bin having an end panel and a sliding floor; and a robot configured to access the one or more storage locations within the one or more moveable trays within the one or more storage modules and transfer the requested one or more articles to the loading bin prior to dispensing the requested one or more articles from the loading bin into a patient-specific container, wherein each of the one or more moveable trays is moved from a storage position to a retrieval position prior to the access by the robot to the one or more storage locations to retrieve the one or more articles, wherein the loading bin dispenses the requested one or more articles into the patient-specific container in response to the loading bin being inserted into the patient-specific container, the end panel opening an end of the bin, the sliding floor retracting from the bin, and the bin being removed from the patient-specific container.