WO2021174768A1 - 一种可打开式双源ct设备o型臂结构 - Google Patents

一种可打开式双源ct设备o型臂结构 Download PDF

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Publication number
WO2021174768A1
WO2021174768A1 PCT/CN2020/108865 CN2020108865W WO2021174768A1 WO 2021174768 A1 WO2021174768 A1 WO 2021174768A1 CN 2020108865 W CN2020108865 W CN 2020108865W WO 2021174768 A1 WO2021174768 A1 WO 2021174768A1
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Prior art keywords
rotor
plate
rail
detector
shaped
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PCT/CN2020/108865
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English (en)
French (fr)
Inventor
冯在东
郭炜
冯杰
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南京安科医疗科技有限公司
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Publication of WO2021174768A1 publication Critical patent/WO2021174768A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • A61B6/035—Mechanical aspects of CT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4007—Arrangements for generating radiation specially adapted for radiation diagnosis characterised by using a plurality of source units
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A61B6/481—Diagnostic techniques involving the use of contrast agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/504—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of blood vessels, e.g. by angiography

Definitions

  • the invention relates to the technical field of medical equipment, in particular to an openable dual-source CT equipment O-arm structure.
  • minimally invasive surgery has become one of the main directions of surgical development in the 21st century.
  • the technical characteristics of minimally invasive surgery means that the operation cannot be performed in a fully open state, and the risk of the operation is high.
  • the quality of the operation is completely dependent on the operator’s experience to evaluate the patient’s preoperative CT images, and the postoperative CT scan is performed to confirm the effect of the operation. And decide whether to perform a second operation.
  • the change of the patient’s posture has caused the difference between the evaluation of the CT image before the operation and directly caused the operation to fail to achieve the estimated results.
  • the fundamental way to solve these problems is to use advanced intraoperative CT scanning equipment to scan and reconstruct high-precision three-dimensional images.
  • dual-source equipment has great advantages in cardiac examination and angiography, with high time resolution, and the examination is not affected by changes in the patient's heart rate.
  • dual sources can realize dual-energy scanning. The two X-ray sources release different energy to obtain high-energy and low-energy data at the same location. Using dual-energy silhouette technology, high-quality bone and blood vessel images can be obtained, which is powerful and widely used.
  • the present invention provides an openable dual-source CT device O-arm structure, which can not only meet the flexible operation of traditional C-arm equipment, but also realize large-scale double C-arm radiography All the functions of the equipment can also be used in intraoperative inspections.
  • an openable dual-source CT equipment O-arm structure including a C-shaped bracket, the inside of the C-shaped bracket is provided with a freely rotatable rotor, the rotor is C
  • the inner side of the rotor is equipped with a fixed ball tube and a rotor inner rail.
  • the inner rail of the rotor is equipped with a rolling frame, a movable ball tube and a detector one.
  • the inside of the rolling frame is equipped with a detector two.
  • the rolling frame can slide along the inner rail of the rotor. It forms an annular rotating body with the rotor.
  • the fixed tube and the detector are separated by 180°
  • the movable tube and the detector are separated by 180°
  • the fixed tube and the movable tube are separated by 180°.
  • the included angle ⁇ ranges from 50° to 130°.
  • the C-shaped bracket is composed of a left side plate, a right side plate, an outer support plate, and an inner support plate.
  • the inner side of the left side plate and the right side plate are provided with support rollers for supporting the C-shaped rotor, and the outer support plate
  • the rotor includes a rotor frame.
  • the rotor frame is composed of a left rotor frame, a right rotor frame, and a rotor crossbeam.
  • the rotor left frame and the rotor right frame are provided with rotor outer rails that match the supporting rollers, and the rotor inner rails are arranged Inside the rotor left skeleton and the rotor right skeleton, a semicircular rack is provided on the side of the rotor inner rail of the rotor left skeleton near the center of the circle, and the outer ring gear that meshes with the driving gear is provided on the outer circle of the rotor right skeleton.
  • the rolling frame includes an arc guide plate, a gear plate, an auxiliary support, an auxiliary guide rail, a linear guide rail, a guide rail connecting plate, a screw motor, a rolling gear, and a guide shoe.
  • the left and right sides of the arc guide plate are provided with guide shoes.
  • the shoe is installed on the inner rail of the rotor, the linear guide rail and the screw motor are installed on the outer circle of the arc guide plate, the left and right ends of the linear guide rail are respectively provided with a guide rail connecting plate, and the screw motor is equipped with a left end screw and a right end screw.
  • the support is located on the left side of the arc guide plate, the inner side of the auxiliary support is connected to the left end guide rail connecting plate of the linear guide, and the left end screw rod of the lead screw motor.
  • the gear plate is located on the right side of the arc guide plate. The right end of the screw rod is connected, the auxiliary support and the outer side of the gear plate are provided with auxiliary guide rails, the rolling gear is installed on the inner circle of the arc guide plate, and the rolling gear is driven by the motor and meshes with the semicircular rack;
  • the arc-shaped guide plate of the rolling frame slides along the inner rail of the rotor through the guide shoe and forms a ring-shaped rotating body with the rotor.
  • the auxiliary support and the gear plate are driven by the screw motor to expand outward along the linear guide rail, so that the auxiliary guide rail can be spliced with the outer rotor rail. It forms an O-shaped track, and the ring gear and the outer ring gear of the rotor right frame are spliced into an O-shaped ring gear.
  • the fixed ball tube is installed between the left frame of the rotor and the right frame of the rotor, and is relatively fixed to the rotor, the movable ball tube and the detector one can slide on the inner rail of the rotor, and the detector two is installed in the arc.
  • the inner circle of the shaped guide plate is relatively fixed with the rolling frame.
  • the movable ball tube and the first detector are connected by a ball tube connecting rod, and the first detector and the rolling frame are connected by a detector connecting rod.
  • the C-shaped bracket is installed on a mobile platform or a cart.
  • the C-shaped bracket is installed on the bracket rail of the indoor top surface or wall through a hanger.
  • the advantages of the present invention are that the O-arm structure can realize dual-source scanning, can realize precise positioning scanning and surgical inspection of multiple positions, and can display two angles at a time when used for angiography, with less contrast agent consumption and inspection efficiency Compared with the traditional large-scale double C-arm angiography equipment, it occupies a small area and is more flexible; the O-arm structure can be opened to form a C-arm structure, which is more convenient to remove from the hospital bed and has stronger operability.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the present invention, with the rotor closed;
  • Figure 2 is a schematic diagram of the three-dimensional structure of the present invention, with the rotor in an open state;
  • Fig. 3 is a schematic diagram of the structure of the C-shaped bracket of the present invention.
  • Figure 4 is a schematic structural view of the open state of the rotor
  • Figure 5 is a schematic view of the structure of the rotor in a closed state
  • Figure 6 is a schematic diagram of the structure of the rolling frame
  • Figure 7 is a schematic diagram of the assembly of the rotor outer rail and support rollers
  • Fig. 8a is the first application example of the present invention.
  • Figure 8b is the second application example of the present invention.
  • 100-C type bracket 101-left side plate; 102-right side plate; 103-outer support plate; 104-inner support plate; 110-support roller; 120-drive gear; 200-rotor; 210-rotor Frame; 211-rotor left frame; 212-rotor right frame; 213-rotor outer rail; 214-rotor inner rail; 215-semi-circular rack; 216-rotor beam; 220-rolling frame; 221-curved guide plate; 222- Sprocket; 223-support; 224-auxiliary guide rail; 225-linear guide rail; 226-rail connecting plate; 227-screw motor; 228-detector two; 229-rolling gear; 230-guide shoe; 30-fixed ball Tube; 40-movable tube; 41-tube connecting rod; 50-detector one; 51-detector connecting rod; 60-front collimator; 70-hanger; 71-support rail; 80-cart.
  • an openable dual-source CT device O-arm structure of the present invention includes a C-shaped bracket 100, and a freely rotatable rotor 200 is provided inside the C-shaped bracket 100.
  • 200 is a C-shaped opening.
  • the inner side of the rotor 200 is provided with a fixed ball tube 30 and a rotor inner rail 214.
  • the rotor inner rail 214 is provided with a rolling frame 220, a movable ball tube 40 and a detector 50.
  • Device two 228, the rolling frame 220 can slide along the rotor inner rail 214 and form a ring-shaped rotating body with the rotor 200.
  • the fixed ball tube 30 and the detector 50 are separated by 180°
  • the movable ball tube 40 and the second detector 228 are separated by 180°
  • the angle ⁇ between the fixed bulb 30 and the movable bulb 40 ranges from 50° to 130°.
  • the C-shaped bracket 100 is composed of a left side plate 101, a right side plate 102, an outer support plate 103, and an inner support plate 104.
  • the inner side of the left side plate 101 and the right side plate 102 are provided with support rollers 110.
  • the supporting rollers 110 are arranged in two rows on the circumference of two different radii for supporting the C-shaped rotor 200, and the outer supporting plate 103 is provided with a driving gear 120 on the side close to the right side plate 102 for
  • the C-shaped rotor 200 is driven to rotate, and the driving gear 120 is manually driven by a hand wheel or driven by a motor.
  • the rotor 200 includes a rotor frame 210.
  • the rotor frame 210 is composed of a rotor left skeleton 211, a rotor right skeleton 212, and a rotor beam 216.
  • the rotor left skeleton 211 and the rotor right skeleton 212 are provided with a rotor outside.
  • the outer rail 213, the rotor outer rail 213 is matched with the supporting roller 110, and the common supporting function of the two enables the rotor 200 to rotate freely inside the C-shaped bracket.
  • the rotor inner rail 214 is arranged inside the rotor left skeleton 211 and the rotor right skeleton 212.
  • the rotor inner rail 214 of the rotor left skeleton 211 is provided with a semicircular rack 215 on the side close to the center of the circle.
  • the gear 120 meshes with an outer ring gear. When the driving gear 120 rotates, it drives the rotor 200 to rotate by meshing with the outer gear ring of the rotor right skeleton 212.
  • the rolling frame 220 includes an arc guide plate 221, a gear plate 222, an auxiliary support 223, an auxiliary guide rail 224, a linear guide rail 225, a guide rail connecting plate 226, a screw motor 227, a rolling gear 229, a guide Boots 230.
  • Guide shoes 230 are provided on the left and right sides of the arc-shaped guide plate 221. The guide shoes 230 are installed on the rotor inner rail 214 and can slide along the rotor inner rail 214.
  • the linear guide rail 225 and the screw motor 227 are installed on the outer circle of the arc guide plate 221, the left and right ends of the linear guide 225 are respectively provided with a guide rail connecting plate 226, the screw motor 227 is provided with a left end screw and a right end screw, and auxiliary support 223 Located on the left side of the arc guide plate 221, the inner side of the auxiliary support 223 is connected with the left end guide rail connecting plate 226 of the linear guide 225 and the left end screw of the screw motor 227.
  • the gear plate 222 is located on the right side of the arc guide plate 221.
  • the right end guide rail connecting plate 226 and the screw motor 227 are connected with the right end screw rod.
  • the auxiliary support 223 and the ring gear 222 are provided with auxiliary guide rails 224.
  • the rolling gear 229 is installed on the inner circle of the arc guide plate 221.
  • the rolling gear 229 is driven by the motor and connected
  • the semicircular racks 215 mesh with each other.
  • the rolling gear 229 rotates, the rolling frame 220 slides along the rotor inner rail 214 by meshing with the semicircular rack 215 for transmission.
  • the arc-shaped guide plate 221 of the rolling frame 220 slides along the rotor inner rail 214 through the guide shoe 230.
  • the rotor 200 is closed, and the rolling frame 220 and the rotor 200 form an annular rotating body.
  • the auxiliary support 223 and the gear plate 222 are driven by the screw motor 227 to expand outward along the linear guide 225, so that the auxiliary guide 224 and the rotor can be expanded.
  • the outer rail 213 is spliced into an O-shaped rail, and the ring gear 222 and the outer gear ring of the rotor right frame 212 are spliced into an O-shaped gear ring.
  • the driving gear 120 rotates, it drives the ring-shaped rotating body to rotate through the meshing transmission with the O-ring gear.
  • the fixed ball tube 30 is installed between the rotor left frame 211 and the rotor right frame 212 through a support, and is relatively fixed to the rotor 200.
  • the movable ball tube 40 and the detector 50 slide The seat is mounted on the rotor inner rail 214 and can slide along the rotor inner rail 214.
  • the second detector 228 is installed on the inner circle of the arc guide plate 221 through a support, and is relatively fixed to the rolling frame 220.
  • the movable bulb 40 and the first detector 50 are connected by a bulb connecting rod 41, and the first detector 50 and the rolling frame 220 are connected by a detector connecting rod 51.
  • the movable ball tube 40, the probe one 50 and the rolling frame 200 realize linkage through the ball tube connecting rod 41 and the detector connecting rod 51.
  • the detector connecting rod 51 connected to the curved guide plate 221 drives the detector 50 to slide counterclockwise synchronously
  • the ball tube connecting rod 41 connected to the detector 50 drives the movable tube 40 to reverse.
  • the hour hand slides synchronously.
  • the fixed ball tube 30 and the detector one 50 are separated by 180° on the circumference of the rotor, and the movable ball tube 40 and the detector two 228 are separated by 180°.
  • the straightener 60 is used to adjust and constrain the divergence angle of X-rays.
  • the fixed bulb 30 and the movable bulb 40 are spaced at 90° on the circumference, and the rotor 200 forms a dual-source system in which two pairs of bulb detectors are arranged orthogonally.
  • the drive gear 120 of the C-shaped bracket 100 is paired with the O-ring formed by the rotor 200 and the rolling frame 220 to form a pair of transmission pairs, and the ring-shaped rotating body formed by the driving rotor 200 and the rolling frame 220 is in C
  • the inner side of the type support 100 rotates by ⁇ 190°, so that the scanning requirement within the range of 360° can be realized.
  • the C-shaped bracket 100 can be installed on a mobile platform or cart 80, or installed on a bracket rail 71 on the indoor ceiling or wall through a hanger 70, of course. It is not limited to the above two examples.

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Abstract

一种可打开式双源CT设备O型臂结构，包括C型支架(100)，C型支架(100)内侧设有可自由转动的转子(200)，转子(200)为C型开口状，转子(200)内侧设有固定球管(30)和转子内轨(214)，转子内轨(214)上设有滚动架(220)、活动球管(40)和探测器一(50)，滚动架(220)内侧设有探测器二(228)，滚动架(220)可沿转子内轨(214)滑动并与转子(200)组成圆环型转动体，固定球管(30)与探测器一(50)间隔180°，活动球管(40)与探测器二(228)间隔180°，且固定球管(30)与活动球管(40)之间夹角α范围在50°～130°。O型臂结构，既可满足传统C型臂设备的灵活操作，又可实现大型双C臂造影设备的全部功能，还可应用在术中检查。

Description

一种可打开式双源CT设备O型臂结构 技术领域
本发明涉及医疗设备技术领域，尤其是一种可打开式双源CT设备O型臂结构。
背景技术
微创外科手术因各种优势，已经成为21世纪外科医疗发展的主要方向之一。微创手术的本身技术特点就意味着无法在完全开放的状态下施展手术，手术风险高，手术质量完全依赖术者根据经验对病人术前CT图像的评估，术后进行CT扫描确认手术效果，并决定是否进行二次手术。但是患者体位的改变，造成与术前CT图像评估的差异，直接造成手术达不到预估效果，解决这些问题的根本办法是采用先进的术中CT扫描设备，扫描重建高精度的三维图像，及时修正手术操作，从而减小手术难度，提高手术的精准度，避免二次手术的发生。另外，在心脏检查及血管造影等方面，双源设备具有较大的优势，时间分辨率高，检查不受患者心率变化的影响。而且双源能够实现双能量扫描，两个X射线源释放不同的能量，从而获得同一位置的高能和低能数据，利用双能剪影技术，可以获得优质的骨骼及血管影像，功能强大，应用广泛。
目前市场上一般的微创外科术及血管造影设备多为单源的C型臂X射线扫描设备，手术中难以同时得到正位和侧位图像，需要频繁转动C臂，大型的双C臂系统结构庞大，需两个C臂组合使用，操作复杂。而目前的双源CT设备均为术前扫描设备，难以应用在术中检测。
发明内容
发明目的：为了克服上述现有技术的不足，本发明提供了一种可打开式双源CT设备O型臂结构，既可满足传统C型臂设备的灵活操作，又可实现大型双C臂造影设备的全部功能，还可应用在术中检查。
为了实现上述目的，本发明采用了如下的技术方案：一种可打开式双源CT设备O型臂结构，包括C型支架，C型支架内侧设有可自由转动的转子，所述转子为C型开口状，转子内侧设有固定球管和转子内轨，转子内轨上设有滚动架、活动球管和探测器一，滚动架内侧设有探测器二，滚动架可沿转子内轨滑动并与转子组成圆环型转动体，在圆环型转动体圆周上，固定球管与探测器一间隔180°，活动球管与探测器二间隔180°，且固定球管与活动球管之间夹角α范围在50°～130°。
进一步的，所述C型支架由左侧板、右侧板、外侧支撑板和内侧支撑板拼接组成，左侧板和右侧板内侧设有支撑滚轮，用于支撑C型转子，外侧支撑板设有驱动齿轮，用于驱动C型转子转动。
进一步的，所述转子包括转子框架，转子框架由转子左骨架、转子右骨架和转子横梁拼接组成，转子左骨架和转子右骨架外侧设有与支撑滚轮相匹配的转子外轨，转子内轨设置在转子左骨架和转子右骨架内侧，在转子左骨架的转子内轨靠近圆心的一侧设有半圆齿条，转子右骨架外圆上设有与驱动齿轮相互啮合的外齿圈。
进一步的，所述滚动架包括弧形导板、齿盘、副支撑、辅助导轨、直线导轨、导轨连板、丝杠电机、滚动齿轮、导靴，弧形导板左右两侧设有导靴，导靴安装在转子内轨上，直线导轨和丝杠电机安装在弧形导板外圆上，直线导轨左右两端分别设有一个导轨连板，丝杠电机设有左端丝杆和右端丝杠，副支撑位于弧形导板左侧，副支撑内侧与直线导轨左端导轨连板、丝杠电机左端丝杆相连，齿盘位于弧形导板右侧，齿盘内侧与直线导轨右端导轨连板、丝杠电机右端丝杆相连，副支撑和齿盘外侧设有辅助导轨，滚动齿轮安装在弧形导板内圆上，滚动齿轮由电机驱动并与半圆齿条相互啮合；
滚动架的弧形导板通过导靴沿转子内轨滑动并与转子组成圆环型转动体，通过丝杠电机带动副支撑和齿盘沿直线导轨向外侧扩张，可使辅助导轨与转子外轨拼接成O型轨道，齿盘与转子右骨架外齿圈拼接成O型齿圈。
进一步的，所述固定球管安装在转子左骨架和转子右骨架之间，与转子相对固定，所述活动球管和探测器一可在转子内轨上滑动，所述探测器二安装在弧形导板内圆上，与滚动架相对固定。
进一步的，所述活动球管与探测器一之间由球管连杆相连，所述探测器一与滚动架之间由探测器连杆相连。
进一步的，所述C型支架安装在移动平台或推车上。
进一步的，所C型支架通过吊架安装在室内顶面或墙壁的支架轨道上。
有益效果：本发明优点在于O型臂结构可实现双源扫描，能实现多个位置的精准定位扫描及手术检查，用于血管造影手术一次可显示两个角度，造影剂用量少，检查效率高，相对于传统的大型双C臂血管造影设备占地面积小，更灵活；O型臂结构可以打开形成C臂结构，更加方便从病床上方移开，可操作性更强。
附图说明
图1为本发明的立体结构示意图，转子闭合状态；
图2为本发明的立体结构示意图，转子打开状态；
图3为本发明的C型支架结构示意图；
图4为转子开口状态的结构示意图；
图5为转子闭合状态的结构示意图；
图6为滚动架结构示意图；
图7为转子外轨及支撑滚轮装配示意图；
图8a为本发明的应用示例一。
图8b为本发明的应用示例二。
图中：100-C型支架；101-左侧板；102-右侧板；103-外侧支撑板；104-内侧支撑板；110-支撑滚轮；120-驱动齿轮；200-转子；210-转子框架；211-转子左骨架；212-转子右骨架；213-转子外轨；214-转子内轨；215-半圆齿条；216-转子横梁；220-滚动架；221-弧形导板；222-齿盘；223-副支撑；224-辅助导轨；225-直线导轨；226-导轨连板；227-丝杠电机；228-探测器二；229-滚动齿轮；230-导靴；30-固定球管；40-活动球管；41-球管连杆；50-探测器一；51-探测器连杆；60-前准直器；70-吊架；71-支架导轨；80-推车。
具体实施方式：
下面结合附图对本发明做更进一步的解释。
如图1、2和4所示，本发明的一种可打开式双源CT设备O型臂结构，包括C型支架100，C型支架100内侧设有可自由转动的转子200，所述转子200为C型开口状，转子200内侧设有固定球管30和转子内轨214，转子内轨214上设有滚动架220、活动球管40和探测器一50，滚动架220内侧设有探测器二228，滚动架220可沿转子内轨214滑动并与转子200组成圆环型转动体，在圆环型转动体圆周上，固定球管30与探测器一50间隔180°，活动球管40与探测器二228间隔180°，且固定球管30与活动球管40之间夹角α范围在50°～130°。
如图3所示，所述C型支架100由左侧板101、右侧板102、外侧支撑板103和内侧支撑板104拼接组成，左侧板101和右侧板102内侧设有支撑滚轮110，如图7所示，支撑滚轮110在两个不同半径的圆周上布置有两排，用于支撑C型转子200，外侧支撑板103靠近右侧板102一侧设有驱动齿轮120，用于驱动C型转子200转动，驱动齿轮120又通过手轮人工驱动，或通过电机驱动。
如图3和4所示，所述转子200包括转子框架210，转子框架210由转子左骨架211、转子右骨架212和转子横梁216拼接组成，转子左骨架211和转子右骨架212外侧设有转子外轨213，转子外轨213与支撑滚轮110相匹配，两者共同的支撑作用使得转子200能够在C型支架内侧自由转动。转子内轨214设置在转子左骨架211和转子右骨架212内侧，在转子左骨架211的转子内轨214靠近圆心的一侧设有半圆齿条215，转子右骨架212外圆上设有与驱动齿轮120相互啮合的外齿圈。驱动齿轮120转动时，通过与转子右骨架212外齿圈相互啮合传动，带动转子200转动。
如图4和6所示，所述滚动架220包括弧形导板221、齿盘222、副支撑223、辅助 导轨224、直线导轨225、导轨连板226、丝杠电机227、滚动齿轮229、导靴230。弧形导板221左右两侧设有导靴230，导靴230安装在转子内轨214上，可沿转子内轨214滑动。直线导轨225和丝杠电机227安装在弧形导板221外圆上，直线导轨225左右两端分别设有一个导轨连板226，丝杠电机227设有左端丝杆和右端丝杠，副支撑223位于弧形导板221左侧，副支撑223内侧与直线导轨225左端导轨连板226、丝杠电机227左端丝杆相连，齿盘222位于弧形导板221右侧，齿盘222内侧与直线导轨225右端导轨连板226、丝杠电机227右端丝杆相连，副支撑223和齿盘222外侧设有辅助导轨224，滚动齿轮229安装在弧形导板221内圆上，滚动齿轮229由电机驱动并与半圆齿条215相互啮合。滚动齿轮229转动时，通过与半圆齿条215相互啮合传动，实现滚动架220沿转子内轨214滑动。
滚动架220的弧形导板221通过导靴230沿转子内轨214滑动，当弧形导板221顺时针滑动至图4状态时，滚动架220完全收纳至转子200内侧，转子200完全打开，呈C型开口状，当弧形导板221逆时针滑动至图5状态时，转子200被封闭，滚动架220与转子200组成圆环型转动体。如图6所示，在滚动架220与转子200组成圆环型转动体状态下，通过丝杠电机227带动副支撑223和齿盘222沿直线导轨225向外侧扩张，可使辅助导轨224与转子外轨213拼接成O型轨道，齿盘222与转子右骨架212外齿圈拼接成O型齿圈。此时，驱动齿轮120转动时，通过与O型齿圈相互啮合传动，带动圆环型转动体转动。
如图4和5所示，所述固定球管30通过支撑件安装在转子左骨架211和转子右骨架212之间，与转子200相对固定，所述活动球管40和探测器一50通过滑动座安装转子内轨214上，可沿转子内轨214滑动，所述探测器二228通过支撑件安装在弧形导板221内圆上，与滚动架220相对固定。
所述活动球管40与探测器一50之间由球管连杆41相连，所述探测器一50与滚动架220之间由探测器连杆51相连。活动球管40、探测器一50和滚动架200之间通过球管连杆41和探测器连杆51实现联动。滚动架220逆时针滑动过程中，与弧形导板221相连的探测器连杆51带动探测器一50逆时针同步滑动，与探测器一50相连的球管连杆41带动活动球管40作逆时针同步滑动。
结合图1所示，固定球管30与探测器一50在转子圆周上间隔180°，活动球管40与探测器二228间隔180°，固定球管30和活动球管40均安装有前准直器60，用于调整和约束X射线的发散角度。固定球管30与活动球管40在圆周上间隔90°，转子200内部形成两对球管探测器正交布置的双源系统。
结合图3所示，C型支架100的驱动齿轮120与转子200和滚动架220组成的O 型齿圈配对组成一对传动副，驱动转子200和滚动架220组成的圆环型转动体在C型支架100内侧转动±190°，由此可实现360°范围内的扫描需求。
如图8a和8b所示，为了便于使用，所述C型支架100可以安装在移动平台或推车80上，或者安装通过吊架70安装在室内顶面或墙壁的支架轨道71上，当然并不局限于上述两例。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (8)

  1. 一种可打开式双源CT设备O型臂结构，其特征在于：包括C型支架(100)，C型支架(100)内侧设有可自由转动的转子(200)，所述转子(200)为C型开口状，转子(200)内侧设有固定球管(30)和转子内轨(214)，转子内轨(214)上设有滚动架(220)、活动球管(40)和探测器一(50)，滚动架(220)内侧设有探测器二(228)，滚动架(220)可沿转子内轨(214)滑动并与转子(200)组成圆环型转动体，在圆环型转动体圆周上，固定球管(30)与探测器一(50)间隔180°，活动球管(40)与探测器二(228)间隔180°，且固定球管(30)与活动球管(40)之间夹角α范围在50°～130°。
  2. 根据权利要求1所述的一种可打开式双源CT设备O型臂结构，其特征在于：所述C型支架(100)由左侧板(101)、右侧板(102)、外侧支撑板(103)和内侧支撑板(104)拼接组成，左侧板(101)和右侧板(102)内侧设有支撑滚轮(110)，用于支撑C型转子(200)，外侧支撑板(103)设有驱动齿轮(120)，用于驱动C型转子(200)转动。
  3. 根据权利要求2所述的一种可打开式双源CT设备O型臂结构，其特征在于：所述转子(200)包括转子框架(210)，转子框架(210)由转子左骨架(211)、转子右骨架(212)和转子横梁(216)拼接组成，转子左骨架(211)和转子右骨架(212)外侧设有与支撑滚轮(110)相匹配的转子外轨(213)，转子内轨(214)设置在转子左骨架(211)和转子右骨架(212)内侧，在转子左骨架(211)的转子内轨(214)靠近圆心的一侧设有半圆齿条(215)，转子右骨架(212)外圆上设有与驱动齿轮(120)相互啮合的外齿圈。
  4. 根据权利要求3所述的一种可打开式双源CT设备O型臂结构，其特征在于：所述滚动架(220)包括弧形导板(221)、齿盘(222)、副支撑(223)、辅助导轨(224)、直线导轨(225)、导轨连板(226)、丝杠电机(227)、滚动齿轮(229)、导靴(230)，弧形导板(221)左右两侧设有导靴(230)，导靴(230)安装在转子内轨(214)上，直线导轨(225)和丝杠电机(227)安装在弧形导板(221)外圆上，直线导轨(225)左右两端分别设有一个导轨连板(226)，丝杠电机(227)设有左端丝杆和右端丝杠，副支撑(223)位于弧形导板(221)左侧，副支撑(223)内侧与直线导轨(225)左端导轨连板(226)、丝杠电机(227)左端丝杆相连，齿盘(222)位于弧形导板(221)右侧，齿盘(222)内侧与直线导轨(225)右端导轨连板(226)、丝杠电机(227)右端丝杆相连，副支撑(223)和齿盘(222)外侧设有辅助导轨(224)，滚动齿轮(229)安装在弧形导板(221)内圆上，滚动齿轮(229)由电机驱动并与半圆齿条(215)相互啮合；
    滚动架(220)的弧形导板(221)通过导靴(230)沿转子内轨(214)滑动并与转子(200)组成圆环型转动体，通过丝杠电机(227)带动副支撑(223)和齿盘(222)沿直线导轨(225)向外侧扩张，可使辅助导轨(224)与转子外轨(213)拼接成O型轨道，齿盘(222)与转子右骨架(212)外齿圈拼接成O型齿圈。
  5. 根据权利要求4所述的一种可打开式双源CT设备O型臂结构，其特征在于：所述固定球管(30)安装在转子左骨架(211)和转子右骨架(212)之间，与转子(200)相对固定，所述活动球管(40)和探测器一(50)可在转子内轨(214)上滑动，所述探测器二(228)安装在弧形导板(221)内圆上，与滚动架(220)相对固定。
  6. 根据权利要求5所述的一种可打开式双源CT设备O型臂结构，其特征在于：所述活动球管(40)与探测器一(50)之间由球管连杆(41)相连，所述探测器一(50)与滚动架(220)之间由探测器连杆(51)相连。
  7. 根据权利要求1所述的一种可打开式双源CT设备O型臂结构，其特征在于：所述C型支架(100)安装在移动平台或推车(80)上。
  8. 根据权利要求1所述的一种可打开式双源CT设备O型臂结构，其特征在于：所C型支架(100)通过吊架(70)安装在室内顶面或墙壁的支架轨道(71)上。
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