Radiotherapy Component Authorization Using RFID Verification

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Solution Overview

Problem

Current radiotherapy device servicing processes are burdensome and prone to human error, allowing unauthorized personnel to service these complex machines, which can compromise safety and regulatory compliance.

Innovation Solution

Implementing identifiers, such as RFID tags or optical marks, on radiotherapy device components to automatically verify their authenticity and ensure they meet safety and regulatory criteria, with a system that includes a device controller and central authorization database to manage component authorization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual verification processes are used to check component authorization, then flexibility and adaptability are maintained, but human error increases and reliability decreases

Engineering Contradiction:

Improvecomponent authorization accuracyVSAvoidauthorization system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces manual verification processes with automated electronic verification systems. RFID tags and optical marks on components are automatically read and verified against a central database, eliminating human error in authorization checks while maintaining system flexibility through software-based control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables components to self-verify their authorization status through embedded identifiers. When a component is installed, it automatically provides its identification data to the verification system, which then autonomously determines authorization status without requiring manual intervention.

Inventive Principle:

Principle #25Self-service

2Reliability

If automated verification systems are implemented, then reliability and accuracy of authorization checks improve, but device complexity and initial cost increase

Engineering Contradiction:

Improveauthorization verification accuracyVSAvoidsystem structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs universal RFID tags and optical marking systems that can be applied across multiple component types and radiotherapy devices. The central authorization database serves multiple functions including component verification, tracking, and management, reducing overall system complexity despite the automated verification capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If strict authorization controls are enforced, then safety and regulatory compliance are improved, but ease of operation and servicing speed decrease

Engineering Contradiction:

Improvesafety complianceVSAvoidservicing convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Components are pre-tagged with RFID tags or optical marks during manufacturing, and authorization data is pre-loaded into the central database. This preliminary preparation enables rapid verification during servicing, maintaining strict safety controls while improving servicing speed and convenience.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Manual authorization verification procedures are replaced with automated electronic verification systems that instantly check component credentials against the central database. This substitution maintains rigorous safety controls while dramatically reducing the time and complexity of authorization checks during servicing operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If manual component verification is performed, then adaptability to different servicing scenarios is maintained, but productivity and servicing efficiency are reduced

Engineering Contradiction:

Improveservicing speedVSAvoidauthorization verification time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent replaces time-consuming manual verification processes with automated electronic verification systems. RFID readers and optical scanners instantly retrieve and verify component authorization data from the central database, reducing verification time from minutes to seconds and dramatically improving servicing productivity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Components equipped with RFID tags or optical marks can automatically provide their identification and authorization data when scanned. This self-service capability eliminates the need for manual data entry and verification steps, accelerating the servicing process while maintaining comprehensive authorization controls.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12502557B2Radiotherapy devices and access authorisation

Publication Date: 2025.12.23 ELEKTA AB

AI summary

A method of determining whether a radiotherapy device configured to provide therapeutic radiation to a patient should be authorised for use. The device comprises a plurality of components, each component of the plurality of components being coupled with at least one identifier configured to provide data identifying the component it is coupled with. The method comprises receiving, from the identifiers, data identifying each of the plurality of components of the radiotherapy device and determining whether at least one authorisation criterion is met based on the identifying data and authorisation data; and if the at least one authorisation criterion is met, determining that the radiotherapy device is authorised for use.