Pharmaceutical Dispensing System with Modular Locking Drawers
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Solution Overview
Problem
Current pharmaceutical dispensing systems in clinical settings face challenges in ensuring secure access to medications, particularly in preventing diversion and ensuring the right medication is taken by the right patient, while also being cost-effective and efficient.
Innovation Solution
The dispensing unit features locking drawers with indicators and sensors to guide users to the correct medication, a processor for authorization, and video recording for deterrence and monitoring, allowing only single doses to be accessed and ensuring accurate tracking and access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If processor based dispensing cabinets with locked drawers are used to store medications at floor level, then secure access and immediate availability of medications are improved, but device complexity and cost increase
Solution Approach 1:
The cabinet is divided into multiple locked drawers, each containing specific medications. Each drawer can be independently locked and unlocked, allowing secure storage of multiple medication types while maintaining manageable complexity through modular organization.
Solution Approach 2:
A processor system acts as an intermediary between the nurse and the medications. The processor controls the locking mechanisms, tracks access, and manages the dispensing process, centralizing complexity in a control system rather than requiring complex mechanical systems throughout.
2Manufacturing precision
If individual locking drawers with single dose pockets are used, then prevention of diversion and accuracy of medication dispensing are improved, but manufacturing cost increases
Solution Approach 1:
The cabinet is divided into multiple locked drawers, each containing specific medications. Each drawer can be independently locked and unlocked, allowing secure storage of multiple medication types while maintaining manageable complexity through modular organization.
Solution Approach 2:
The system uses simple, inexpensive locking mechanisms and drawer structures that can be easily manufactured and replaced. The focus is on providing adequate security and tracking rather than using expensive, complex high-security systems.
3Ease of operation
If locked drawers with indicators and sensors are used to guide users, then ease of operation and accuracy of medication selection are improved, but device complexity increases
Solution Approach 1:
Indicators on the cabinet drawers change color or illuminate to show which drawers are locked, which are unlocked, and which contain medications ready for dispensing. This visual feedback system guides nurses through the complex locking and selection process without requiring additional operational steps.
Solution Approach 2:
Sensors detect when drawers are opened or closed and provide feedback to the processor, which then updates the indicator system. This feedback loop automatically tracks medication access and updates the user interface, reducing the need for manual tracking and simplifying the overall operation.
4Reliability
If video recording is added for deterrence and monitoring, then security and detection of diversion are improved, but device complexity and cost increase
Solution Approach 1:
The video recording system acts as an intermediary layer of monitoring. Rather than requiring complex active surveillance systems with multiple sensors and operators, simple video cameras record events that can be reviewed later, providing security through passive observation and deterrence.
Data Source
AI summary
The invention describes improved methods and mechanisms for providing secure access to pharmaceutical and supply items in a clinical setting. In one version of the invention, a dispensing unit has an interior housing one or more drawers. Each drawer has one or more storage locations. The fronts of the drawers are covered with one or more locking doors, preventing access to a particular drawer, unless the covering door is unlocked. Indicators are mounted on the side of the enclosure, to guide the user to a drawer covered by an associated unlocked door. The unit further includes indicators on the sides of the drawers, to guide the user to the right storage receptacles or pockets within the drawer. Some pockets may have lids. Some of the lids may have locks. Sensors associated with at least some of the individual pocket lids may be provided to detect the lifting of a lid. Means to automatically detect the entry of a hand or fingers into a pocket may be provided. One or more loudspeakers may be mounted on the unit, to provide auditory guidance and confirmation of correct access, by sounds and voice prompts. One or more video cameras may be mounted on the unit. A processor is mounted in the unit, or, in the case of an auxiliary unit, the auxiliary unit is connected to the processor on the main unit. The processor is connected to receive signals from sensors in the dispensing unit, from the video camera, and to send signals to the indicators, and to send auditory information to loudspeakers which are designed to focus the sound specifically to the user. Modular locking drawers may be mounted in this unit also, dispensing individual doses using a method where the drawer has to be fully closed for each unit dose of medication taken.