X-ray diagnostic apparatus

Patent metadata

Field	Value
Publication number	US-2024099679-A1
Application number	US-202318473382-A
Country	US
Kind code	A1
Filing date	Sep 25, 2023
Priority date	Sep 26, 2022
Publication date	Mar 28, 2024
Grant date	—

Abstract

According to one embodiment, an X-ray diagnostic apparatus comprising: an arm, a pair of grooved portions, a plurality of rollers, and a plurality of belts. The arm is configured to support an X-ray tube at one end and an X-ray detector at another end and has a shape of an arc. The grooved portions are formed on side surfaces of the arm. The plurality of rollers are configured to run in the grooved portions and slidably support the arm along the arc. Each of the belts passes over at least two of the rollers and at least partially abuts on inner walls of the grooved portions.

First claim

What is claimed is:

1 . An X-ray diagnostic apparatus comprising:
an arm configured to support an X-ray tube at one end and an X-ray detector at another end and having a shape of an arc; a pair of grooved portions formed on side surfaces of the arm; a plurality of rollers configured to run in the grooved portions and slidably support the arm along the arc; and a plurality of belts each passing over at least two of the rollers and at least partially abutting on inner walls of the grooved portions.

2 . The X-ray diagnostic apparatus according to claim 1 , wherein
the plurality of rollers include:
a plurality of inner rollers configured to run on an inner circumferential side of the arc in the grooved portions; and
a plurality of outer rollers configured to run on an outer circumferential side of the arc in the grooved portions, and
the plurality of belts include:
an inner belt passing over at least two of the plurality of inner rollers; and
an outer belt passing over at least two of the plurality of outer rollers.

3 . The X-ray diagnostic apparatus according to claim 2 , further comprising:
a plurality of guide rollers configured to correct a path of at least one of the inner belt and the outer belt in such a manner that the inner belt and the outer belt are distanced from one another.

4 . The X-ray diagnostic apparatus according to claim 3 , wherein
the guide rollers have a smaller diameter than the inner rollers and the outer rollers.

5 . The X-ray diagnostic apparatus according to claim 2 , wherein
the inner rollers are provided in an even number, and the inner rollers over which the inner belt passes are arranged so as to be symmetric with respect to a central line splitting an even number of inner rollers in two.

6 . The X-ray diagnostic apparatus according to claim 2 , wherein
the outer rollers are provided in an even number, and the outer rollers over which the outer belt passes are arranged so as to be symmetric with respect to a central line splitting an even number of outer rollers in two.

7 . The X-ray diagnostic apparatus according to claim 2 , further comprising:
an auxiliary roller provided between at least one adjacent pair of the outer rollers over which the outer belt passes, and configured to run on the outer circumferential side of the arc so as to make the outer belt abut on the inner walls of the grooved portions.

8 . The X-ray diagnostic apparatus according to claim 2 , wherein
the inner belt passes over at least one adjacent pair of the plurality of inner rollers, and the outer belt passes over at least one adjacent pair of the plurality of outer rollers.

9 . The X-ray diagnostic apparatus according to claim 8 , wherein
a first guide groove and a second guide groove are formed on a circumferential surface of each of the inner rollers so as to be distanced from each other, and if each inner belt individually passes over at least two pairs of the inner rollers, each inner belt engages with a plurality of the first guide grooves or a plurality of the second guide grooves.

10 . The X-ray diagnostic apparatus according to claim 8 , wherein
a first guide groove and a second guide groove are formed on a circumferential surface of each of the outer rollers so as to be distanced from one another, and if each outer belt individually passes over at least two pairs of the outer rollers, each outer belt engages with a plurality of the first guide grooves or a plurality of the second guide grooves.

11 . The X-ray diagnostic apparatus according to claim 1 , wherein
a guide groove is formed on a circumferential surface of each of the rollers, and each of the belts includes an engaging portion engaging with the guide groove.

12 . The X-ray diagnostic apparatus according to claim 1 , further comprising:
an arm holder including the belts and the rollers and configured to slidably hold the arm; and a supporting arm configured, at one end, to support the arm holder to allow its rotation around a rotation axis, which is approximately horizontal, and provided, at another end, on a floor surface or a ceiling surface so as to be swivelable around a rotation axis, the rotation axis being approximately vertical.

13 . The X-ray diagnostic apparatus according to claim 12 , wherein
the supporting arm includes:
a first arm provided, at one end, on a floor surface or a ceiling surface so as to be swivelable around a first rotation axis, which is approximately vertical; and
a second arm configured to rotatably support the arm holder and supported at another end of the first arm so as to be rotatable around a second rotation axis, which is approximately vertical.

Assignees

• Canon Medical Systems Corp

Inventors

• Akiyama Masaki
• Ohashi Shumpei
• Yoshida Hiroshi
• Narahara Kensei
• Hirasawa Masashi

Classifications

• A61B6/4441 Primary

  the rigid structure being a C-arm or U-arm · CPC title

• A61B6/0407

  Supports, e.g. tables or beds, for the body or parts of the body · CPC title

• A61B8/4494

  characterised by the arrangement of the transducer elements · CPC title

• A61B6/44

  Constructional features of apparatus for radiation diagnosis · CPC title

• A61B6/4464

  the source unit or the detector unit being mounted to ceiling · CPC title