# US 10,765,388 B2 · Radiation-irradiation device comprising a first arm, a second arm, and main body surface regulating a rotational movement of the second arm

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- Number: US 10,765,388 B2
- Document ID: US10765388B2
- Status: Granted
- Kind: B2
- Application number: 15/865,544
- Filed: 2018-01-09
- Published: 2018-05-31
- Granted: 2020-09-08
- Earliest claimed: 2015-07-27
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Yasuhisa Nozawa; Noriyuki Onobori
- Web page: https://patentgrep.com/patent/US10765388B2

## CPC

- A61B 6/4458: {the source unit or the detector unit being attached to robotic arms}
- A61B 6/00: Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment (instruments measuring radiation intensity for application in the field of nuclear medicine, e.g. in vivo counting, G01T1/161)
- A61B 6/10: Safety means specially adapted therefor
- A61B 6/102: {Protection against mechanical damage, e.g. anti-collision devices}
- A61B 6/105: {Braking or locking devices}
- A61B 6/42: Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B 6/4208: {characterised by using a particular type of detector}
- A61B 6/4283: {characterised by a detector unit being housed in a cassette}
- A61B 6/44: {Constructional features of apparatus for radiation diagnosis}
- A61B 6/4405: {the apparatus being movable or portable, e.g. handheld or mounted on a trolley}
- A61B 6/4429: {related to the mounting of source units and detector units}
- A61B 6/4452: {the source unit and the detector unit being able to move relative to each other}
- A61B 6/46: Arrangements for interfacing with the operator or the patient
- A61B 6/461: {Displaying means of special interest}
- A61B 6/462: {characterised by constructional features of the display}
- A61B 6/54: {Control of apparatus or devices for radiation diagnosis}
- A61B 6/40: Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A radiation-irradiation device includes a leg unit, a radiation source unit, an arm unit, a body unit, and a raising/lowering mechanism. The arm unit includes a first arm connected to the radiation source unit, a second arm, a first rotational moving portion that connects the first arm to the second arm so as to allow the first arm and second arm to be rotationally movable relative to each other, and a second rotational moving portion that connects the second arm to the raising/lowering mechanism so as to allow the second arm to be rotationally movable relative to the raising/lowering mechanism. The rotation of the second arm from an initial rotational movement position is regulated by the body unit in a case in which the arm unit is positioned at a position other than a first position where the arm unit is raised or lowered by the raising/lowering mechanism.

## Claims

### Claim 1

A radiation-irradiation device comprising:
a leg unit, including a base and wheels, that is capable of traveling on a device-placement surface;
a radiation source that irradiates a subject with radiation;
an arm unit, including a first arm and a second arm, that supports the radiation source;
a main body that stands on the leg unit and supports the arm unit; and
a raising/lowering mechanism, including a cylinder and a shaft, that raises and lowers the arm unit relative to the main body,
wherein the first arm of the arm unit is connected to the radiation source, and the arm unit further includes a first rotational moving portion that connects the first arm to the second arm so as to allow the first arm and second arm to be rotationally movable relative to each other, and a second rotational moving portion that connects the second arm to the raising/lowering mechanism so as to allow the second arm to be rotationally movable relative to the raising/lowering mechanism; and
wherein a support surface of the main body on which the arm unit is supported regulates a rotational movement of the second arm from an initial rotational movement position, which is performed using the second rotational moving portion, in a case in which the arm unit is positioned at a position other than a first position, where the arm unit is raised or lowered by the raising/lowering mechanism.

### Claim 2 (depends on 1)

The radiation-irradiation device according to claim 1,
wherein the initial rotational movement position is a position where the second arm is rotationally moved upward, and
the support surface of the main body regulates the rotational movement of the second arm toward the main body that is performed using the second rotational moving portion.

### Claim 3 (depends on 2)

The radiation-irradiation device according to claim 2,
wherein the support surface of the main body releases a regulation of the rotational movement of the second arm toward the main body that is performed using the second rotational moving portion in a case in which the arm unit is positioned at the first position.

### Claim 4 (depends on 1)

The radiation-irradiation device according to claim 1,
wherein the first position is a highest position in a raising/lowering range in which the arm unit is raised and lowered by the raising/lowering mechanism.

### Claim 5 (depends on 1)

The radiation-irradiation device according to claim 1,
wherein the main body includes a computer for controlling the radiation source.

### Claim 6 (depends on 1)

The radiation-irradiation device according to claim 1,
wherein the arm unit is revolvably supported by the main body.

### Claim 7 (depends on 6)

The radiation-irradiation device according to claim 6, further comprising:
revolution regulating means, including a second cylinder, a second shaft and a keyway, for regulating a revolution of the arm unit in a case in which the arm unit is positioned at a position other than the first position.

### Claim 8 (depends on 1)

The radiation-irradiation device according to claim 1, further comprising:
first-rotational-moving-portion regulating means, comprising a belt, for regulating a rotational movement of the first rotational moving portion.

### Claim 9 (depends on 1)

The radiation-irradiation device according to claim 1, further comprising:
a display for displaying a movable range of the arm unit and the radiation source in a state in which the arm unit is viewed from a side.

### Claim 10 (depends on 9)

The radiation-irradiation device according to claim 9,
wherein the display displays a target position of the radiation source in a state in which the arm unit is viewed from a side.