Medication Cabinet Drawers With Selective Compartment Access

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Solution Overview

Problem

Medical items, such as medications and instruments, require controlled-access storage to prevent misuse, theft, or errors, but existing solutions lack secure and efficient methods for selective access and distribution.

Innovation Solution

A drawer assembly and cabinet system with a slidable drawer unit and a movable cover or belt, actuated by an electric motor and controlled by a user interface, which allows authorized access while maintaining secure storage through a controller managing access authorization and content information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional storage cabinets are used for medical items, then storage capacity is provided, but secure controlled access and prevention of misuse/theft/errors cannot be ensured

Engineering Contradiction:
Improvesecure storage and controlled accessVSAvoidcabinet system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The cabinet is divided into multiple drawers, each drawer into multiple compartments, with individual access control for each compartment. This segmentation allows selective access to specific items while maintaining overall security, resolving the contradiction by enabling controlled access without requiring complete cabinet access.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cabinet incorporates dynamic access control where the level of access (drawer opening, compartment access) changes based on user authorization and system commands. The electric motor dynamically adjusts drawer position and compartment accessibility, providing secure storage while enabling controlled distribution.

Inventive Principle:
Principle #15Dynamics

2Reliability

If access control is implemented for all medical items, then security against misuse and theft is improved, but access efficiency and speed are reduced

Engineering Contradiction:
Improveprevention of misuse and theftVSAvoidaccess speed and efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system pre-approves authorized users and their access levels before actual access is needed. When an authorized user approaches, the system automatically facilitates access without requiring real-time authentication, thus maintaining security while improving access speed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cabinet system autonomously manages access control based on pre-stored authorization data. The controller automatically determines which drawers and compartments to access based on the user and item requested, eliminating manual security checks and improving access efficiency while maintaining security protocols.

Inventive Principle:
Principle #25Self-service

3Reliability

If selective access to specific compartments is enabled, then error prevention and controlled distribution are improved, but device complexity and control mechanisms are increased

Engineering Contradiction:
Improveerror prevention and controlled distributionVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The electric motor and controller system serves multiple functions: it opens drawers, positions compartments, controls access to specific sections, and integrates with the overall cabinet security system. This multi-functionality reduces the need for separate mechanisms for each control task, managing complexity while enabling selective access.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The controller acts as an intermediary between the user interface and the physical drawer/compartment mechanisms. It processes access requests, determines authorization, and coordinates motor actions to provide selective access, simplifying the control architecture while enabling precise compartment-level access control.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Device complexity

If manual access methods are used, then device simplicity is maintained, but security against unauthorized access and errors is reduced

Engineering Contradiction:
Improvecabinet system simplicityVSAvoidsecurity and error prevention
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent replaces manual mechanical access control with an electric motor-driven system controlled by a microprocessor. This substitution provides automated security checks, authorized access control, and error prevention mechanisms while maintaining relatively simple overall cabinet structure, resolving the contradiction between simplicity and security.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9111408B2Medication cabinetry
Publication Date: 2015.08.18 ARXIUM INC
  • US9111408B2 patent drawing
  • US9111408B2 patent drawing
  • US9111408B2 patent drawing

AI summary

An exemplary embodiment includes a cabinet having at least one drawer with selectable access for storing items, such as medications. A slidable cover with a first opening allows for closure and/or access to items in an interior of the drawer. The cabinet further includes an actuator coupled to the cover and a controller coupled to the actuator to control movement of the first opening relative to the drawer interior in response to signals generated from a user interface.