Automated Pharmaceutical Dispensing with Buffer Tube and Pallet Consolidation
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Solution Overview
Problem
High-volume pharmacies face inefficiencies in fulfilling prescription orders due to manual or semi-automated processes, which can lead to delays and inaccuracies in dispensing multiple prescription drugs across different areas of the pharmacy.
Innovation Solution
An automated system comprising an order processing device, automated dispensing device, and pallet management system that communicates through a network to track, route, and consolidate prescription orders, using a control subsystem and automated dispensing subsystem to efficiently dispense and package prescription drugs into containers on a pallet, with RFID tags for data storage and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual or semi-automated processes are used for dispensing prescription drugs, then device complexity is reduced, but productivity and accuracy deteriorate
Solution Approach 1:
The automated dispensing system is divided into distinct functional modules: a dispensing cabinet with multiple cells for different drugs, a buffer tube system for temporary storage, a pallet system for order consolidation, and a control subsystem. Each module operates semi-independently, allowing the system to achieve high productivity through coordination of simpler components rather than requiring a single complex automated unit.
Solution Approach 2:
The buffer tube acts as an intermediary between the dispensing cabinet and the final packaging area. It temporarily holds dispensed drugs and allows for sequencing and consolidation of multiple prescriptions before final packaging. This intermediary component simplifies the overall control logic by decoupling the dispensing function from the packaging function, enabling higher productivity without proportionally increasing system complexity.
2Adaptability or versatility
If multiple prescription drugs are dispensed from different areas of the pharmacy, then adaptability is improved, but loss of time increases due to gathering and consolidation
Solution Approach 1:
The system merges multiple prescription fulfillment operations into a single consolidated workflow. The pallet assembly serves as a convergence point where drugs from different cells and buffer tubes are brought together for a single prescription order. This merging approach maintains adaptability to handle diverse prescription combinations while eliminating the time loss associated with physically gathering prescriptions from separate locations, as everything is consolidated in one automated station.
Solution Approach 2:
The buffer tube system performs preliminary action by temporarily storing dispensed drugs in sequence before final packaging is required. This allows the system to prepare multiple drug components in advance and hold them ready for consolidation, reducing the time needed for final order assembly while maintaining the ability to handle diverse prescription requirements.
3Manufacturing precision
If automated dispensing subsystem is implemented, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The control subsystem implements feedback mechanisms to ensure precise dispensing. The controller monitors the dispensing process, tracks the contents of each cell and buffer tube, and verifies the correct quantity is transferred to the pallet. This feedback control achieves high manufacturing precision in drug quantity measurement without requiring overly complex hardware, as the precision is maintained through intelligent control logic rather than complex mechanical mechanisms.
Data Source
AI summary
An automated dispensing device for a pharmaceutical order filling system includes an order processing device to receive a pharmaceutical order. The order processing device includes a cell for containing an available quantity of a pharmaceutical of the pharmaceutical order, and an insert received in the cell. The insert has a dispensing tube, and is adapted to receive the available quantity of the pharmaceutical and to dispense a measured quantity of the pharmaceutical through the dispensing tube. The cell includes a funnel having a weighted gate adapted to receive the dispensing tube of the insert.