RFID Medication Cart Drawers for Authorized Dispensing Accuracy

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Solution Overview

Problem

Current methods for dispensing medications in hospitals and nursing homes are prone to errors, leading to improper medication administration and potential adverse drug reactions, as they lack efficient tracking and authorization processes.

Innovation Solution

A mobile medical technology station with electronically recognizable drawers, secured by RFID tags and accessible only through authorized electronic signals, which includes a display device, input device, and processor for secure and accurate medication distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual medication dispensing is used by nurses and medical staff, then ease of operation is maintained, but medication distribution errors increase and reliability decreases

Engineering Contradiction:
Improvemedication distribution accuracyVSAvoidoperation complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces manual mechanical dispensing operations with an automated electronic system. The mobile station uses electronic drawers with RFID tags, automated locking mechanisms, and computer-controlled access based on patient identifiers. This substitution eliminates manual errors in medication selection and distribution while maintaining ease of use through automated guidance and identification systems.

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

Solution Approach 2:

The system enables self-service through automated identification and verification. When a patient identifier is scanned or entered, the system automatically identifies the correct drawer, unlocks it electronically, and guides the staff member to the specific medication. This reduces reliance on manual searching and verification, improving both accuracy and operational efficiency.

Inventive Principle:
Principle #25Self-service

2Reliability

If electronic authorization and tracking systems are implemented, then medication security and accuracy improve, but device complexity increases

Engineering Contradiction:
Improvemedication access controlVSAvoidsystem structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mobile station integrates multiple functions into a single device: RFID reading, electronic locking, patient identification verification, medication tracking, and secure dispensing. By combining these functions into one unified system rather than separate components, the patent reduces overall system complexity while maintaining comprehensive security and control capabilities.

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

Solution Approach 2:

The system employs a nested structure where RFID tags are embedded within drawers, which are contained within the mobile station. Patient identifiers are nested within the software system, which controls the electronic locking mechanism. This hierarchical nesting allows complex functionality to be organized in manageable layers, reducing operational complexity while maintaining security.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Measurement precision

If RFID tags and electronic identifiers are used in each drawer, then measurement precision of medication identification improves, but manufacturing precision requirements increase

Engineering Contradiction:
Improvedrawer identification accuracyVSAvoiddrawer assembly tolerance
Core Design Contradiction:
Measurement precisionVSManufacturing precision

Solution Approach 1:

The patent replaces mechanical identification methods (such as physical labels or manual tracking) with RFID electronic tags embedded in each drawer. This substitution enables precise electronic identification and tracking of each drawer's location and contents without requiring high-precision mechanical assembly or positioning of the drawers themselves, thereby reducing manufacturing precision requirements while improving identification accuracy.

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

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 system significantly reduces medication errors by ensuring that only authorized personnel can access and dispense medications, using unique identifiers for each patient, thereby enhancing safety and accuracy in medication administration.

Implementation Method 1

The drawers on the cart are electronically recognizable, by employing a unique identifier, such as inclusion of an RFID tag in each drawer, or another electronic identification device.

Methodology Applied
Scientific EffectRFID (Radio Frequency Identification): Electromagnetic Induction

Data Source

PatentUS11439555B2Medical technology station and method of use
Publication Date: 2022.09.13 CAPSA SOLUTIONS LLC
  • US11439555B2 patent drawing
  • US11439555B2 patent drawing
  • US11439555B2 patent drawing

AI summary

The invention includes a medical technology station and a method for using the medical technology cart. The station can be a portable cart that can be movable, such as rollable, and has a computer system. Attached to the cart is a housing that communicates with the computer system. Insertable in the housing is a cassette system that includes a series of drawers. The drawers are openable and preferably closeable on command from a user. The drawers have a readable unique drawer identifier that is readable by sensors in the cassette. The cassette also preferably includes proximity sensors, while the drawers contain a target for the proximity sensors. In use, an operator, with proper credentials, can, though the computer system, identify a drawer to be opened by the computer system. The cassette and drawers can be removed from the housing and transported to another location for filling of the drawers with medications or other supplies.