Radiation Detector Module Guiding Pin Groove Positioning

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Solution Overview

Problem

Existing radiation detector systems in medical imaging devices, such as X-ray CT apparatuses, face challenges in efficiently and accurately replacing individual radiation detector modules, leading to increased downtime and complexity during maintenance or when abnormalities occur.

Innovation Solution

The implementation of a radiation detector module system with a fixing frame and support member configuration that restricts movement in the channel and row directions, utilizing guiding pins and grooves to position modules precisely, allowing for easier attachment and detachment by guiding the module in the radiation irradiation direction, thus simplifying the exchange process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If radiation detector modules are made individually replaceable, then maintenance efficiency is improved, but positioning accuracy and movement restriction during operation deteriorate

Engineering Contradiction:

Improvemodule replaceabilityVSAvoidpositioning accuracy

Core Design Contradiction:

Ease of repairVSManufacturing precision

Solution Approach 1:

The radiation detector is divided into multiple independently replaceable modules, each with its own support member and guiding structure. This segmentation allows individual module replacement while maintaining overall system precision through standardized guiding interfaces.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Guiding pins and guiding grooves act as intermediary elements between the module support member and the fixing frame. These intermediaries ensure accurate positioning and movement restriction during operation, while allowing easy attachment and detachment during maintenance.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If guiding structures are added for precise positioning, then positioning accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidstructure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Guiding structures are localized to specific areas where needed - guiding pins on the fixing frame and corresponding guiding grooves on support members. This localized approach provides necessary positioning accuracy without adding complexity to the entire device.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The guiding pins and grooves have asymmetric geometries that provide precise positioning in specific directions while allowing freedom of movement in other directions, optimizing the balance between positioning accuracy and operational flexibility.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS11166685B2Radiation detector and radiation detector module

Publication Date: 2021.11.09 CANON MEDICAL SYST CORP

AI summary

A radiation detector according to an embodiment includes a plurality of radiation detector modules and a fixing frame. When a radiation detector module is attached to the fixing frame, a guiding part with a groove shape formed at an end of a support member of the radiation detector module on a side of the fixing frame is fitted to a guiding pin provided to an end of the fixing frame, so that the radiation detector module is positioned in a radiation irradiation direction while a movement thereof in a channel direction and a row direction is restricted.