Devices for controlled dispensing
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Solution Overview
Problem
Existing dispensing cabinet systems for controlled access to pharmaceuticals and supplies face issues with reliable and efficient locking and unlocking mechanisms, leading to potential failures and increased complexity in tracking user access.
Innovation Solution
The use of a selector index plate with protrusions and actuators allows for precise and efficient actuation of individual bins, enabling controlled access while minimizing interference and maintaining the locked state of non-selected bins through a mechanism involving a translator plate and release actuator, integrated with sensors for tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If individual bin locking mechanisms with solenoids are integrated into each bin, then selective access control to individual bins is achieved, but device complexity increases and reliability decreases due to repeated locking and unlocking operations
Solution Approach 1:
The system divides the locking function into two independent parts: a centralized control mechanism (index plate with actuators) and simple bin lid locks. The index plate segments the control process by translating in two directions to selectively engage with specific bin lids, while each bin lid maintains a simple locking mechanism without integrated solenoids. This segmentation reduces individual component complexity while preserving selective access control capability.
Solution Approach 2:
The index plate serves multiple functions: it translates in the first direction to position itself relative to target bins, translates in the second direction to engage/disengage from bin lids, and provides a centralized control point for multiple bins. This multi-functionality eliminates the need for separate solenoid mechanisms in each bin, reducing overall device complexity while maintaining selective access control.
2Loss of information
If software systems and mechanical locking mechanisms are integrated into each bin for tracking user access, then user access tracking is achieved, but the system becomes overly complex and difficult to repair or maintain
Solution Approach 1:
The complex locking and tracking functionality is extracted from individual bins and consolidated into a centralized index plate mechanism. The index plate contains the actuation logic and translation mechanisms, while bin lids are simplified to passive components with basic locking features. This extraction makes the system easier to maintain because failures are isolated to the centralized index plate rather than distributed across multiple complex bin mechanisms.
Solution Approach 2:
The index plate acts as an intermediary between the control system and bin lids. It translates control signals into physical engagement with specific bin lids through its two-directional translation capability. This intermediary role simplifies bin lid design and makes the system more maintainable, as the index plate can be serviced independently while bins remain simple storage containers with basic locks.
3Adaptability or versatility
If repeated locking and unlocking operations are performed on individual bins, then selective access is enabled, but locking mechanisms are subject to failure resulting in lids that may not lock or unlock properly
Solution Approach 1:
The index plate introduces dynamic control to the locking system through its ability to translate in two different directions. By translating in the first direction, it positions itself relative to target bins; by translating in the second direction, it engages or disengages from bin lids. This dynamic, multi-directional control allows the same mechanism to selectively lock or unlock different bins without requiring separate mechanisms, improving reliability through standardized, repeatable motion patterns.
Solution Approach 2:
The system incorporates sensors that detect the locked/unlocked state of bin lids and provide feedback to the control system. This feedback mechanism ensures that locking operations are confirmed and can be retried if necessary, improving reliability. The centralized index plate can receive feedback from multiple bins and adjust its translation and engagement accordingly, ensuring proper locking state is achieved.
Data Source
AI summary
Devices and methods for controlled dispensation are described herein where such an assembly may generally comprise an index plate having one or more protrusions extending from a surface of the plate, a first actuator configured to translate the plate in a first direction, and a second actuator configured to translate the plate in a second direction different from the first direction. The one or more protrusions may define one or more rows which are arranged upon the plate in a collinear arrangement and may further define one or more columns which are arranged upon the plate at an angle relative to a proximal or distal edge of the plate such that each protrusion is off-set relative to an adjacent protrusion along the column.