Medication Tray Preparation Workstation with Rear Illumination
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Solution Overview
Problem
Existing medication tray preparation systems are prone to errors due to manual handling and lack of reliable monitoring, particularly in environments like nursing homes where patients receive multiple medications, and existing solutions like camera monitoring are inadequate due to occlusion and ambient lighting issues.
Innovation Solution
A workstation with a top deck and support section featuring deck cutouts and a lighting system that provides backlighting, combined with a camera and control unit for image analysis, ensures accurate placement and counting of medications, reducing errors through enhanced visibility and automated verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a camera is used to monitor medicine items in preparation compartments, then monitoring capability is provided, but monitoring reliability deteriorates due to occlusion by compartment sides and ambient light variations
Solution Approach 1:
A light transmissible support section is introduced as an intermediary between the medicine items and the camera. This support section transmits light from below to illuminate the medicine items from the rear, eliminating the need for top-down lighting that causes shadows and improving camera visibility and monitoring reliability.
Solution Approach 2:
Instead of illuminating the medicine items from above (conventional approach), the patent inverts the lighting direction by placing a light transmissible support section below the items. This rear illumination approach prevents shadow formation and occlusion issues, allowing the camera to capture clear images of the medicine items.
2Ease of operation
If manual preparation of medication trays is performed, then flexibility in medication placement is maintained, but error rate increases due to human oversight and lack of verification
Solution Approach 1:
The camera captures images of the medicine items in the preparation compartments, and this visual feedback is transmitted to a remote location (nurse station or pharmacist). This allows verification of correct medication placement without requiring physical presence at the preparation station, maintaining operational flexibility while improving accuracy through remote monitoring and the four-eye principle.
3Illumination intensity
If backlighting is provided through the support section, then visibility of medicine items is improved, but device complexity increases due to additional lighting system components
Solution Approach 1:
The support section serves multiple functions: it provides structural support for the top deck, acts as a light transmissible element for rear illumination, and potentially serves as part of the tray receiving structure. By combining these functions in a single component, the patent avoids adding separate lighting hardware, thereby improving visibility without proportionally increasing device complexity.
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 workstation significantly reduces medication preparation errors by providing clear visibility and automated verification, enhancing the reliability and efficiency of medication tray preparation.
Implementation Method 1
The support section comprises a light transmissible layer... The lighting system is configured to transmit light into the support section
Data Source
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AI summary
The disclosure relates to a workstation (1) for preparation of a medication tray, the workstation (1) comprising: a top deck (2) with a plurality of deck cutouts (21, 21A, 21B) arranged in a defined deck pattern; a support section (3) arranged underneath the top deck (2), wherein the support section (3) comprises a light transmissible layer (32); a lighting system (62) configured to transmit light into the light transmissible layer (32); and a receiving compartment (4) arranged underneath the support section (3), configured to receive a medication tray having a plurality of receptacles (71, 71A, 71B).