WO2018108042A1 - 一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构 - Google Patents

一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构 Download PDF

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WO2018108042A1
WO2018108042A1 PCT/CN2017/115353 CN2017115353W WO2018108042A1 WO 2018108042 A1 WO2018108042 A1 WO 2018108042A1 CN 2017115353 W CN2017115353 W CN 2017115353W WO 2018108042 A1 WO2018108042 A1 WO 2018108042A1
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honeycomb
rib
rotating frame
lower half
proton therapy
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PCT/CN2017/115353
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English (en)
French (fr)
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郑金星
李明
宋云涛
张午权
程勇
杨松竹
张宇
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合肥中科等离子医学技术装备有限公司
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Publication of WO2018108042A1 publication Critical patent/WO2018108042A1/zh
Priority to US16/207,204 priority Critical patent/US10821307B2/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1077—Beam delivery systems
    • A61N5/1081—Rotating beam systems with a specific mechanical construction, e.g. gantries
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
    • A61N2005/1087—Ions; Protons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N2005/1092—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N2005/1092—Details
    • A61N2005/1095—Elements inserted into the radiation path within the system, e.g. filters or wedges

Definitions

  • the invention belongs to the field of medical instruments, and particularly relates to a honeycomb rib structure suitable for the inside of a rotating frame of a proton therapy device.
  • Cancer malignant tumor
  • Radiation therapy in traditional cancer treatment mainly adopts X-ray, ⁇ -ray and electron beam, and its physical dose distribution and biological effect damage the normal cells near the tumor to varying degrees, and the effective utilization rate of the dose is also low;
  • the biological effects of sub- and negative ⁇ particles are good, but the physical dose distribution is not good, and the damage to normal tissues is too large, which is not an ideal treatment.
  • the advantage of proton therapy is that the peak of the radiation energy is directed at the tumor lesion, and the maximum dose is applied to the tumor.
  • the normal cells before the tumor usually only receive a peak dose of 1/3 to 1/2, and the normal cells at the back of the tumor are basically Not hurting. From the inherent physical properties of protons it can be concluded that it is much superior to conventional radiotherapy methods. In recent decades, more than 100,000 cancer patients have been treated with protons, and their superiority has been widely clinically proven.
  • the proton therapy centers that have been successfully operated have the disadvantages of large size, expensive cost, long construction period and difficulty in popularization, and the proton therapy devices used in these proton therapy centers do not have the function of locating cancer cells, so additional The device diagnoses the patient, determines the location of the cancer cell, and then treats it with a proton therapy device.
  • the mainstream development direction of the future proton therapy instrument is miniaturization and integration, which reduces the overall size of the proton therapy device, shortens the construction period, reduces the cost, and integrates the diagnostic test with the treatment to facilitate the popularization of the proton therapy device.
  • Honeycomb structure is the basic structure of the honeycomb. It is a structure consisting of a single hexagonal single room, a full or downward facing side of the room, and a back-to-back symmetrical arrangement. This structure has excellent geometric mechanical structure, many The discipline has a wide range of applications.
  • the spacecraft adopts a honeycomb structure to realize the high strength and light weight of the spacecraft. Therefore, this structure is very suitable for the rotating frame of the proton therapy device, and realizes the lightweight design of the rotating frame under the premise of satisfying the structural strength.
  • the rib structure can be adjusted in density, and the structure can be strengthened according to actual needs to meet the structural requirements under different conditions.
  • a honeycomb rib structure suitable for use in a rotating frame of a proton therapy device comprising an upper half honeycomb rib and a lower half honeycomb rib mounted in a cylindrical body structure by a joint structure;
  • the partial honeycomb ribs are symmetrically arranged with the lower half of the honeycomb ribs, and are all formed by a plurality of basic structures distributed in a regular hexagonal shape, and the connecting nodes between the adjacent basic structures are arranged in a ring structure;
  • the upper and lower half of the honeycomb ribs are adjusted in density by providing a density adjusting structure.
  • the cylindrical body structure is a rotating frame of the proton therapy device, which has a cylindrical shape, and the inside thereof is used to mount the upper and lower half of the honeycomb ribs.
  • the annular structure has a columnar shape, and the axial inner portion is provided with a through hole; the upper half rib is connected to the lower half rib by bolts.
  • the upper and lower half of the honeycomb ribs and the cylindrical body structure are connected by a connecting structure;
  • the connecting structure has four surrounding walls disposed opposite to each other, and the bottom side curvature is adapted to the inner ring wall of the cylindrical body structure.
  • the upper side is provided with an open opening;
  • the six pairs of connecting structures are uniformly welded on the inner ring wall of the cylindrical main body structure, wherein the two pairs of connecting structures correspondingly disposed are provided with a clamping groove in the middle.
  • the upper and lower half of the honeycomb rib ring side opening are clamped on the corresponding connecting structure, and the straight plate in the middle of the upper and lower half of the honeycomb rib is caught in the clamping groove in the middle of the connecting structure.
  • the density adjusting structure is connected to the upper and lower half of the honeycomb rib by a ring structure;
  • the increased density adjusting structure has a U shape, and is composed of a connecting plate and two round bars, and the two ends of the connecting plate are respectively
  • a round rod is vertically connected, and the connecting end of the connecting plate and the round rod is flush;
  • the outer diameter of the round rod is adapted to the inner diameter of the annular structure, and the round rod is inserted into the axial through hole of the annular structure.
  • the invention has the beneficial effects that the invention mainly realizes the strengthening of the internal structure of the cylindrical main body structure of the rotating frame of the proton therapy device, and can fully reduce the weight of the rotating frame and reduce the manufacturing cost of the rotating frame under the premise of satisfying the structural strength of the cylindrical main body.
  • the structure of the honeycomb ribs is simple, and the density of the ribs can be adjusted according to actual needs, which reduces the processing cost; the invention has important significance for the promotion of proton therapy technology.
  • FIG. 1 is a three-dimensional schematic view of a honeycomb rib structure of the present invention
  • Figure 2 is a side view of the honeycomb rib structure of the present invention.
  • FIG. 3 is a three-dimensional view of a cylindrical body structure of a honeycomb rib structure according to the present invention.
  • Figure 4 is a three-dimensional view of the structure of the honeycomb rib of the present invention.
  • Figure 5 is a three-dimensional view of the density adjustment structure of the honeycomb rib structure of the present invention.
  • a honeycomb rib structure suitable for the inside of a rotating frame of a proton therapy device see Fig. 1, the structure mainly comprises a cylindrical body structure 1, an upper half honeycomb rib 2, a density adjusting structure 3, a connecting structure 4
  • the lower half of the honeycomb ribs 5 are composed; wherein the cylindrical body structure 1 is a rotating frame of the proton therapy device, see FIG. 3, which has a cylindrical shape, and the inside is used for installing the upper and lower half of the honeycomb ribs. board;
  • the upper half of the honeycomb rib 2 and the lower half of the honeycomb rib 5 are formed by splicing a plurality of basic structures distributed in a regular hexagon shape, see Fig. 1, Fig. 2 and Fig. 4; between adjacent base structures
  • the connecting node is arranged by a ring structure 6 which is column-shaped and has an axially inner through hole; the upper half rib 2 and the lower half rib 5 are connected by bolts;
  • the upper and lower half of the honeycomb ribs are connected with the cylindrical body structure 1 through the connecting structure 4, and the connecting structure 4 provides a welding point between the upper and lower half of the honeycomb ribs and the cylindrical body structure 1;
  • the connecting structure 4 has four surrounding walls disposed oppositely, and the bottom side curvature is adapted to the inner ring wall of the cylindrical body structure 1, and the upper side is an open opening; the six pairs of connecting structures 4 are evenly distributed. Welding on the inner ring wall of the cylindrical body structure 1, wherein the two pairs of connecting structures 4 correspondingly disposed are provided with a clamping groove in the middle; see FIG. 1 and FIG. 2, the upper and lower half of the honeycomb rib ring side opening clip Holding on the corresponding connecting structure 4, the straight plate in the middle of the upper and lower half of the honeycomb rib is caught in the clamping groove in the middle of the connecting structure 4;
  • the upper half of the honeycomb rib 2 and the lower half of the honeycomb rib 5 can be adjusted in density by increasing the density adjusting structure 3, and the density adjusting structure 3 is connected to the upper and lower half of the honeycomb rib by the annular structure 6 to increase
  • the density adjusting structure 3 can enhance the density of the upper and lower half of the honeycomb ribs and increase the structural strength; specifically, as shown in FIG. 5, the density adjusting structure 3 has a U-shape, which is composed of a connecting plate 32 and two circles.
  • the rod 31 is formed, and the two ends of the connecting plate 32 are perpendicularly connected to a round rod 31, and the connecting plate 32 is flush with the connecting end of the round rod 31; the outer diameter of the round rod 31 is adapted to the inner diameter of the annular structure 6, the round rod 31 for inserting into the axial through hole of the annular structure 6;
  • the upper half of the honeycomb rib 2 and the lower half of the honeycomb rib 5 are a plurality of honeycomb-arranged rib structures, arranged symmetrically; each connecting node adopts a ring structure to increase the connection point; The honeycomb density is adjusted as needed; the outer portion of the honeycomb rib is connected to the inner surface of the cylinder through a connection structure;
  • the upper and lower honeycomb rib structures are composed of a basic hexagonal structure, which is used for structural reinforcement inside the cylindrical rotating structure, and the arrangement of the honeycomb ribs is such that the connection space with the inner surface of the cylinder is fully satisfied;
  • the hexagonal base structure connection node of the plate structure adopts a ring structure to increase the welding point, so that the structural strength is improved;
  • the inner cavity of the ring structure can be used for installing the auxiliary support structure, adjusting the density of the honeycomb ribs;
  • the outer edge of the rib structure is connected to the inner surface of the cylinder through the designed reinforcing structure, and the welding position is mainly provided for the honeycomb rib to ensure the structural strength.
  • the invention realizes that the weight of the rotating frame is greatly reduced under the premise of satisfying the structural strength of the rotating frame of the proton therapy device, and the special structural design satisfies the density adjustment of the honeycomb rib structure, so that the honeycomb structure can satisfy different Demand under working conditions.

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  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
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Abstract

一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，包括通过连接结构（4）安装在圆柱形主体结构（1）内的上半部分蜂窝状筋板（2）与下半部分蜂窝状筋板（5）；上半部分蜂窝状筋板（2）与下半部分蜂窝状筋板（5）对称布置，且均由多个呈正六边形分布的基础结构拼接而成，相邻基础结构之间的连接节点采取圆环结构（6）设置；上、下半部分蜂窝状筋板（2，5）上通过设有密度调整结构（3）进行调整密度。蜂窝状筋板结构实现质子治疗装置旋转机架圆柱形主体结构（1）内部结构的加强，可以在满足圆柱形主体结构（1）强度的前提下，充分减小旋转机架重量，降低旋转机架的制造成本；其中上、下半部分蜂窝状筋板（2，5）的结构工艺简单，并且上、下半部分蜂窝状筋板（2，5）的密度可以根据实际需要进行调整，降低了加工成本。

Description

一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构 技术领域
本发明属于医疗器械领域，具体涉及一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构。
背景技术
癌症(恶性肿瘤)已成为世界各国居民因病死亡的主要原因之一，各个国家癌症治疗的新技术不断涌现。传统的癌症治疗中的放射治疗主要采取的是X射线、γ射线和电子束，其物理剂量分布和生物效应都在不同程度上伤害肿瘤附近的正常细胞，而且剂量的有效利用率也低；中子和负π粒子的生物效应虽好，但物理剂量分布不好，对正常组织损害过大,不是理想的治疗方法。质子治疗的优点是使放射线能量峰值对准肿瘤病灶处，在肿瘤处受到最大的照射剂量，肿瘤前的正常细胞通常只受到1/3～1/2的峰值剂量，肿瘤后部的正常细胞基本上不受伤害。从质子内在的物理特性就能断定它比常规放疗方法要优越得多。近几十年来，已有超过10万癌症患者得到质子治疗，其优越性得到广泛的临床验证。
目前已经成功运营的质子治疗中心都具有体积庞大、造价昂贵、建设周期长以及难以普及等缺点，并且这些质子治疗中心采用的质子治疗仪均不具备对癌症细胞进行定位的功能，因此需要额外的设备对病人进行诊断，确定癌症细胞位置，然后利用质子治疗仪进行治疗。未来质子治疗仪主流的发展方向是小型化和集成化，使质子治疗仪的整体尺寸减小，缩短建设周期，降低成本，并且使诊断检测与治疗一体化，以便于质子治疗仪的普及。
蜂窝结构是蜂巢的基本结构，是由一个个正六边形单房、房口全朝下或朝向一边、背对背对称排列组合而成的一种结构，这种结构有着优秀的几何力学结构，在很多学科有着广泛的运用。航天器中采取了蜂窝结构，实现航天器结构强度高，重量轻，因此这种结构十分适用于质子治疗装置的旋转机 架，实现旋转机架在满足结构强度的前提下轻量化的设计。
另外，《核技术》第四卷第九期“HERA质子-电子对撞机电子环磁铁的磁场测量”文章中，公开了一种采用螺杆驱动平移线圈的方式测量磁场强度的装置。这种装置不仅存在测量精度低问题，而且系统占据空间比较大，并不适合与紧凑型回旋加速器磁场的测量。
发明内容
本发明的目的在于提供一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，能够满足质子治疗装置旋转机架轻量化的需求，并且能够实现旋转机架的结构强度满足设计要求，有效地降低制造成本，同时，通过特殊的设计，该筋板结构可以进行密度调整，可以根据实际需求进行结构增强，满足不同情况下的结构需求。
本发明的目的可以通过以下技术方案实现：
一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，包括通过连接结构安装在圆柱形主体结构内的上半部分蜂窝状筋板与下半部分蜂窝状筋板；所述上半部分蜂窝状筋板与下半部分蜂窝状筋板对称布置，且均由多个呈正六边形分布的基础结构拼接而成，相邻所述基础结构之间的连接节点采取圆环结构设置；所述上、下半部分蜂窝状筋板上通过设有密度调整结构进行调整密度。
所述圆柱形主体结构为质子治疗装置的旋转机架，其呈圆柱形形状，其内部用来安装上、下半部分蜂窝状筋板。
所述圆环结构呈柱状，其轴向内部呈通孔设置；所述上半部分筋板与下半部分筋板通过螺栓连接。
所述上、下半部分蜂窝状筋板与圆柱形主体结构通过连接结构进行连接；所述连接结构具有相对设置的四个围壁，其底侧弧度与圆柱形主体结构内环壁相适应，其上侧为敞开口设置；六对连接结构均布焊接在圆柱形主体结构内环壁上，其中，相对应设置的两对连接结构中部开设有夹持槽。
所述上、下半部分蜂窝状筋板环侧开口夹持在对应连接结构上，上、下半部分蜂窝状筋板中部的直板卡在连接结构中部的夹持槽内。
所述密度调整结构通过圆环结构与上、下半部分蜂窝状筋板连接；所述增加密度调整结构呈U型形状，其由一连接板与两个圆杆构成，连接板的两端面分别垂直连接一圆杆，连接板与圆杆的连接端齐平设置；圆杆的外径与圆环结构的内径相适应，圆杆用以插入圆环结构的轴向通孔内。
本发明的有益效果：本发明主要实现质子治疗装置旋转机架圆柱主体结构内部结构的加强，可以在满足圆柱主体结构强度的前提下，充分减小旋转机架重量，降低旋转机架的制造成本；其中蜂窝状筋板的结构工艺简单，并且筋板密度可以根据实际需要进行调整，降低了加工成本；本发明对于质子治疗技术的推广有着重要的意义。
附图说明
为了便于本领域技术人员理解，下面结合附图对本发明作进一步的说明。
图1为本发明蜂窝状筋板结构的三维示意图；
图2为本发明蜂窝状筋板结构的侧视图；
图3为本发明安装蜂窝状筋板结构的圆柱形主体结构三维图；
图4为本发明蜂窝状筋板结构细节三维图；
图5为本发明蜂窝状筋板结构密度调整结构三维图；
图中标号：1-圆柱形主体结构，2-上半部分蜂窝状筋板，3-蜂窝状筋板密度调整结构，4-蜂窝状筋板与圆柱主体结构连接结构，5-下半部分蜂窝状筋板。
本发明的较佳实施方式
下面将结合实施例对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，参见附图1，其结构主要由圆柱形主体结构1、上半部分蜂窝状筋板2、密度调整结构3、连接结构4、下半部分蜂窝状筋板5组成；其中，圆柱形主体结构1为质子治疗装置的旋转机架，参见图3，其呈圆柱形形状，其内部用来安装上、下半部分蜂窝状筋板；
上半部分蜂窝状筋板2与下半部分蜂窝状筋板5均由多个呈正六边形分布的基础结构拼接而成，参见图1、图2与图4；相邻基础结构之间的连接节点采取圆环结构6设置，该圆环结构6呈柱状，其轴向内部呈通孔设置；上半部分筋板2与下半部分筋板5通过螺栓连接；
上、下半部分蜂窝状筋板与圆柱形主体结构1通过连接结构4进行连接，连接结构4提供了上、下半部分蜂窝状筋板与圆柱主体结构1之间的焊接点；
具体地，参见图3，连接结构4具有相对设置的四个围壁，其底侧弧度与圆柱形主体结构1内环壁相适应，其上侧为敞开口设置；六对连接结构4均布焊接在圆柱形主体结构1内环壁上，其中，相对应设置的两对连接结构4中部开设有夹持槽；参见图1、图2，上、下半部分蜂窝状筋板环侧开口夹持在对应连接结构4上，上、下半部分蜂窝状筋板中部的直板卡在连接结构4中部的夹持槽内；
上半部分蜂窝状筋板2与下半部分蜂窝状筋板5可以通过增加密度调整结构3进行调整密度，密度调整结构3通过圆环结构6与上、下半部分蜂窝状筋板连接，增加密度调整结构3可以增强上、下半部分蜂窝状筋板的密度，增加结构强度；具体地，如图5所示，密度调整结构3呈U型形状，其由一连接板32与两个圆杆31构成，连接板32的两端面分别垂直连接一圆杆31，连接板32与圆杆31的连接端齐平设置；圆杆31的外径与圆环结构6的内径相适应，圆杆31用以插入圆环结构6的轴向通孔内；
本发明原理：上半部分蜂窝状筋板2与下半部分蜂窝状筋板5均为多个 蜂窝状布置的筋板结构，呈对称布置；每个连接节点采取圆环结构增加连接点；可以根据需要适时调整蜂窝状密度；蜂窝状筋板外部与圆柱内表面通过连接结构连接；
上、下蜂窝状筋板结构由呈正六边形的基础结构组成，用于圆柱旋转结构内部的结构加强，蜂窝状筋板的布置方式使得与圆柱内表面的连接空间得到充分满足；蜂窝状筋板结构的各个六边形基础结构连接节点处采取圆环结构，增加焊接点，使得结构强度得到提高；圆环结构内部空腔可以用于安装附属支撑结构，调整蜂窝状筋板密度；蜂窝状筋板结构的外边缘通过设计的增强结构与圆柱内表面进行连接，主要为蜂窝状筋板提供焊接位置，保证结构强度。
工业实用性
本发明在满足质子治疗装置旋转机架的结构强度的前提下，实现旋转机架的重量大大减小，并且特殊的结构设计满足蜂窝状筋板结构的密度调整，使得该蜂窝状结构可以满足不同工况下的需求。

Claims (6)

  1. 一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，其特征在于，包括通过连接结构(4)安装在圆柱形主体结构(1)内的上半部分蜂窝状筋板(2)与下半部分蜂窝状筋板(5)；所述上半部分蜂窝状筋板(2)与下半部分蜂窝状筋板(5)对称布置，且均由多个呈正六边形分布的基础结构拼接而成，相邻所述基础结构之间的连接节点采取圆环结构(6)设置；所述上、下半部分蜂窝状筋板上通过设有密度调整结构(3)进行调整密度。
  2. 根据权利要求1所述的一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，其特征在于，所述圆柱形主体结构(1)为质子治疗装置的旋转机架，其呈圆柱形形状，其内部用来安装上、下半部分蜂窝状筋板。
  3. 根据权利要求1所述的一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，其特征在于，所述圆环结构(6)呈柱状，其轴向内部呈通孔设置；所述上半部分筋板(2)与下半部分筋板(5)通过螺栓连接。
  4. 根据权利要求1所述的一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，其特征在于，所述上、下半部分蜂窝状筋板与圆柱形主体结构(1)通过连接结构(4)进行连接；所述连接结构(4)具有相对设置的四个围壁，其底侧弧度与圆柱形主体结构(1)内环壁相适应，其上侧为敞开口设置；六对连接结构(4)均布焊接在圆柱形主体结构(1)内环壁上，其中，相对应设置的两对连接结构(4)中部开设有夹持槽。
  5. 根据权利要求4所述的一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，其特征在于，所述上、下半部分蜂窝状筋板环侧开口夹持在对应连接结构(4)上，上、下半部分蜂窝状筋板中部的直板卡在连接结构(4)中部的夹持槽内。
  6. 根据权利要求1所述的一种适用于质子治疗装置旋转机架内部的蜂窝状筋板结构，其特征在于，所述密度调整结构(3)通过圆环结构(6)与上、下半部分蜂窝状筋板连接；所述增加密度调整结构(3)呈U型形状，其由一连接板(32)与两个圆杆(31)构成，连接板(32)的两端面分别垂直连接一圆杆(31)，连接板(32)与圆杆(31)的连接端齐平设置；圆杆(31)的外径与圆环结构(6)的内径相适应，圆杆(31)用以插入圆环结构(6)的轴向通孔内。
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