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X-ray diagnostic device

A diagnostic device and X-ray technology, used in diagnosis, instruments for radiological diagnosis, medical science, etc., can solve problems such as danger in contact with external equipment, and achieve the effect of reducing fear

Active Publication Date: 2013-03-20
SHIMADZU SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it protrudes outward from the circular locus in a steady state during the assist period, there is a problem that it may come into contact with these external devices, a subject, an operator, etc., and cause danger.

Method used

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  • X-ray diagnostic device
  • X-ray diagnostic device
  • X-ray diagnostic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a figure explaining the outline of the structure of the X-ray diagnostic apparatus of this invention.

[0057] The X-ray diagnostic apparatus has: a C-shaped arm 3, which holds the X-ray tube 1 and the X-ray image detection unit 2 so that the two face each other; a holding unit 4, which holds the C-shaped arm 3 so that it can slide and rotate; The holding unit 5 holds the holding unit 4 so as to be rotatable about the rotation axis Y; the servo motor 13 makes the C-arm 3 slide and rotate; and the servo motor 14 rotates the holding unit 4 . The rotation shaft of the servo motor 13 is engaged with a pinion 41 provided in the holding unit 4 , and the pinion 41 is meshed with a rack 31 provided in the C-arm 3 . According to this configuration, when the servo motor 13 is rotated, the pinion gear 41 is rotated, and the C-arm 3 performs a sliding operation by this rotation.

[0058] Furthermore, the X-ray diagnostic apparatus is provided with a drive control ...

Embodiment 2

[0100] The configuration other than the motion assist function of the drive control unit 6 is the same as that of the first embodiment, and thus description thereof will be omitted.

[0101] (ii) Calculate the time required for assisting based on the assisting distance

[0102] f(t) and g(t) in the above formulas 4 and 5 may be fixed functions in all cases, or may be configured to vary depending on the case. In this example, it is assumed that the Figure 6 function shown. Figure 6 The meaning of each figure contained in the Figure 4 same. Each of these functions satisfies the following conditions. That is, satisfy the condition that the velocity fluctuations exceeding the respective maximum accelerations are not performed during the assist period, and the C-arm 3 is first rotated at a speed of f(t), and then the holding unit 4 is rotated at a speed of g(t). . Thus, if Figure 7 As shown, it is possible to eliminate the adverse influence of the vibration of the device...

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PUM

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Abstract

In a precessional operation where an X-ray irradiation means and a two-dimensional radiation detector are moving on a circular or elliptic orbit respectively by rotating either one of holding means, that is a C arm or a holding means at angular rate of a·sin(t) under a steady state condition and by rotating the other holding means at angular rate of b·cos(t), the operation is carried out at angular rate (f(t), g(t)) to ensure that the maximum acceleration is smaller than the steady state acceleration during a running-up period until steady is reached.

Description

technical field [0001] The present invention relates to the field of X-ray diagnostic devices for contrast examination, and in particular to the circular or X-ray image detection unit that makes the two units on different parallel planes in the state where the X-ray irradiation unit and the X-ray image detection unit are facing each other. A technology that collects moving images while moving (precessing) on ​​an elliptical trajectory. Background technique [0002] Such as Figure 8 As shown, the X-ray diagnostic apparatus used in the contrast examination of circulatory organs has: a C-shaped arm 103, which holds the X-ray irradiation unit 101 and the X-ray image detection unit 102 and makes them face each other; a holding unit 104, which holds the C Shaped arm 103 enables it to slide and rotate; holding unit 105, which holds holding unit 104 so that it can rotate around the Y axis (horizontal axis orthogonal to the rotation axis of the sliding rotation); rotation drive unit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/00
CPCA61B6/4441A61B6/481A61B6/4464A61B6/4476A61B6/504
Inventor 增尾克裕
Owner SHIMADZU SEISAKUSHO CO LTD