X-ray imaging positioning aid

The positioning aid with a grasping member and integrated gripping mechanism ensures stable forearm rotation reproducibility, addressing reproducibility issues in X-ray imaging of artificial shoulder joints, thereby reducing imaging time and re-imaging needs.

JP3256324UActive Publication Date: 2026-06-23馬場 隆行
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
馬場 隆行
Filing Date
2026-03-28
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing X-ray imaging methods for artificial shoulder joints struggle with reproducibility due to individual differences in the posterior twist angle of the humerus, leading to inconsistent forearm rotation angles and increased re-imaging needs.

Method used

A positioning aid with a grasping member, anti-slip materials, and a magnetically connected gripping member, integrated with an index plate featuring reference lines, ensures stable forearm rotation reproducibility.

Benefits of technology

The aid stabilizes forearm rotation, reducing imaging time and technician variability, and minimizing re-imaging requirements.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 0003256324000001_ABST
    Figure 0003256324000001_ABST
Patent Text Reader

Abstract

This invention provides a positioning aid for X-ray imaging that stably reproduces the rotation angle of the forearm during X-ray imaging after artificial shoulder joint surgery, thereby improving imaging efficiency and eliminating inter-technician variability. [Solution] The device comprises a gripping member 1 with a roughly C-shaped cross-section that holds the outer circumference of the forearm, a mounting base 1d, 1e provided on the outer surface of the gripping member and having a pair of inclined surfaces, an indicator plate 2 arranged along the inclined surface and marked with multiple angle lines that serve as alignment indicators for X-ray imaging, and a gripping member 4 that is detachably connected to any position on the indicator plate and stabilizes the distal part of the subject. The gripping member has an opening 1a for attachment and detachment and a mounting base on its upper surface that holds the indicator plate. Reference lines 3 and multiple angle lines 3a, 3b that serve as anatomical indicators are provided on the indicator plate. The gripping member is magnetically connected to a predetermined position on the gripping member side via a magnet 4a. Each member is integrated in a predetermined positional relationship by magnetic force, and the rotation angle is held and reproduced with high precision and ease.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

Background Art

Brief Description of the Drawings

Claims

[Claim 1] A gripping member with a roughly C-shaped cross-section that holds the outer circumference of the forearm, A mounting base portion having a pair of inclined surfaces is provided on the outer circumferential surface of the gripping member, An indicator plate is arranged along the aforementioned inclined surface and has multiple angle lines marked on it that serve as alignment indicators for X-ray imaging, The system includes a gripping member that is detachably attached to any position on the indicator plate and stabilizes the distal part of the subject, An X-ray imaging positioning aid characterized in that the gripping member, the indicator plate, and the holding member are spatially integrated via magnetic mutual coupling, thereby maintaining the rotation angle of the forearm at a predetermined angle.