WO2020156585A1 - 一种拉杆及导源装置 - Google Patents

一种拉杆及导源装置 Download PDF

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Publication number
WO2020156585A1
WO2020156585A1 PCT/CN2020/076280 CN2020076280W WO2020156585A1 WO 2020156585 A1 WO2020156585 A1 WO 2020156585A1 CN 2020076280 W CN2020076280 W CN 2020076280W WO 2020156585 A1 WO2020156585 A1 WO 2020156585A1
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WO
WIPO (PCT)
Prior art keywords
rod
pull rod
source
connector
accommodating space
Prior art date
Application number
PCT/CN2020/076280
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English (en)
French (fr)
Inventor
李大梁
杨华
Original Assignee
西安大医集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安大医集团股份有限公司 filed Critical 西安大医集团股份有限公司
Publication of WO2020156585A1 publication Critical patent/WO2020156585A1/zh
Priority to US17/104,675 priority Critical patent/US11335472B2/en

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/015—Transportable or portable shielded containers for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers
    • 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
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
    • G21G5/00—Alleged conversion of chemical elements by chemical reaction
    • 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

Definitions

  • This application relates to the technical field of source carrier flip-chip equipment, and in particular to a pull rod and a source guide device.
  • the loading and replacement of the source carrier such as the cobalt source cartridge are collectively referred to as the upside-down of the source carrier.
  • the common source change method is usually to build a radiation shielding operation room with a shielding block outside the radiotherapy equipment, commonly known as a hot room, and use special tools to operate in the hot room. Take the protective cover of the download source body, take out the old source and put it into the cobalt source container, and then take the new source out of the cobalt source container and put it into the radiotherapy equipment.
  • This kind of operation process is complicated and takes several days to complete, and because the source replacement process is completed through human operation, the positioning accuracy is not enough, the operation requirements are high, and it is easy to cause radiation hazards to the source replacement technicians.
  • Another source replacement method is to take out the entire treatment head with the source carrier and transport it to the replacement source manufacturer to perform the source replacement.
  • this method must be completed by a professional manufacturer because the source cannot be replaced at the equipment site.
  • it will cause great inconvenience in operation and increase in cost.
  • the purpose of the present application is to provide a pull rod and a source guide device, so as to overcome at least to a certain extent one or more problems caused by the limitations and defects of related technologies.
  • a pull rod including a rod and an adjustment part, the rod including a picking end and an operating end;
  • the adjusting member is located between the pick-up end and the operating end of the rod member, the adjusting member includes an arc surface, and the rod member penetrates the arc surface.
  • the adjusting member is spherical, or the adjusting member is cylindrical.
  • the adjustment member and the rod member are integrally formed, or an opening is provided on the adjustment member, and the pull rod penetrates the opening.
  • the pickup end of the pull rod includes:
  • a connecting head, the front end of the connecting head is provided with a connecting structure
  • the rod is provided with an opening and an accommodating space
  • a connector is provided in the accommodating space of the rod, and the connecting portion of the connector protrudes from the opening of the rod to the accommodating space
  • the The rod and the contactable part of the end of the connector are provided with a limiting structure, and the end of the connector is movably assembled with the limiting structure.
  • the connecting head includes a connecting rod and a swinging piece located between the front end and the end of the connecting rod, the contact surface of the swinging piece and the accommodation space is an arc surface, and the diameter of the swinging piece It is larger than the maximum diameter of the connecting rod, and the swing member is located in the accommodating space of the rod member.
  • the swing member is cylindrical or spherical.
  • the diameter of the swing member is greater than the maximum diameter of the opening.
  • the swinging member and the connecting rod are integrally formed; or, the connecting rod penetrates the swinging member.
  • the inner wall of the accommodating space is arc-shaped.
  • the front end of the accommodating space includes a section of arc-shaped groove that matches with the arc-shaped surface of the swing member.
  • the rod includes a first rod and a second rod that are connected and fixed, and the front end of the first rod is provided with the opening.
  • the opening at the end of the first rod is larger than the maximum size of the connecting head.
  • the second connecting structure is provided on the second rod.
  • the limiting structure is a limiting groove
  • the end of the connecting head further includes a limiting portion
  • the limiting groove is assembled with the limiting portion
  • a source guide device which includes a source guide tank and a pull rod;
  • the source guide tank includes a containing cavity in which a source carrier can be placed;
  • the guide source tank is provided with a hole, and the pull rod can pass through the hole to enter the containing cavity and can rotate in the direction of the arc.
  • a shielding member is further included between the source guide tank and the pull rod, and the pull rod is fixedly arranged with the source guide tank through the shielding member.
  • the rotating rod when the rod moves so that the limit structure is assembled and connected with the end of the connector, the rotating rod can drive the connector to rotate; or, the moving rod can drive the connection
  • the head moves to realize the connection between the connection structure of the connector and the external device such as the source box.
  • the rod can be pulled away from the source box, so that the end of the connector and the limiting structure of the rod can be separated, and then rotate or shake the lever to adjust the connection
  • the relative position of the connecting structure of the head and the source box thereby improving the flexibility and accuracy of the pull rod.
  • FIG. 1 shows a schematic diagram of the structure of the pull rod in an exemplary embodiment of the present application
  • FIG. 2 shows a schematic diagram of the structure of the adjusting member d in the exemplary embodiment of the present application
  • Figures 3 and 4 show a schematic diagram of the structure of the pull rod in an exemplary embodiment of the present application
  • FIG. 4A shows a working principle diagram of the connector in the exemplary embodiment of the present application
  • FIG. 4B shows a working principle diagram of the connector in the exemplary embodiment of the present application
  • FIG. 5 shows a schematic diagram of the structure of the pull rod in the exemplary embodiment of the present application
  • Fig. 6 shows a schematic structural diagram of the source guiding device in an exemplary embodiment of the present application.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • the example embodiments can be implemented in various forms, and should not be construed as being limited to the examples set forth herein; on the contrary, the provision of these embodiments makes this application more comprehensive and complete, and fully conveys the concept of the example embodiments To those skilled in the art.
  • the described features, structures or characteristics can be combined in one or more embodiments in any suitable way.
  • a pull rod provided by the present application includes: a rod 2 and an adjustment member 22.
  • the rod 2 includes a pickup end operating end; the adjustment member 22 is located between the pickup end and the operating end of the rod 2.
  • the adjusting member 22 includes an arc surface 23, and the rod 2 penetrates the arc surface 23.
  • the pull rod is connected with an adjusting member, and the pull rod can be adjusted and oscillated along the arc surface of the adjusting member, thereby improving the connection flexibility of the pull rod.
  • the adjusting member 22 may be spherical, or the adjusting member 22 may be cylindrical.
  • the adjusting member 22 and the rod member 2 may be integrally formed, or the adjusting member 22 is provided with an opening 24 through which the rod member 2 penetrates.
  • the adjusting part 22 and the rod 2 may be fixedly connected by a pin or other non-limiting manner, so as to prevent the rod 2 from rotating relative to the adjusting part 22.
  • the pull rod 2 can rotate in the direction of the arc surface 23, thereby improving the flexibility of the pull rod.
  • a pull rod provided by this application. Refer to Figure 3 and Figure 4.
  • the pull rod also includes a connecting head 1 and a rod 2, where:
  • the front end of the connector 1 is provided with a connecting structure 3;
  • the rod 2 is provided with an opening 4 and an accommodating space 5
  • the connector 1 is provided in the accommodating space 5 of the rod 2
  • the connecting structure 3 of the connector 1 extends from the opening of the rod 2 to the accommodating space 5
  • a limit structure 6 is provided at the contactable part of the rod 2 and the end of the connector, and the end of the connector 1 is movably assembled with the limit structure 6, and the limit structure 6 is restricted when the end of the connector 1 is assembled. The movement of the connecting head 1.
  • the movable in this embodiment means that when the rod 2 is pushed toward the connector 1, the assembly of the limit structure 6 and the end of the connector 1 can be realized; when the rod 2 is away from the connector 1, the limit can be realized The structure 6 and the end of the connector 1 are split.
  • the rod 2 can be pulled away from the cobalt source box, so that the end of the connector 1 is separated from the limiting structure 6 of the rod 2, and then Rotating or shaking the lever can adjust the relative position of the connection structure 3 of the connector 1 and the cobalt source box, thereby improving the flexibility and accuracy of the lever.
  • the front end of the connector 1 may be an end of the connector 1 close to the source carrier 7 of the source guide device.
  • the connection structure 3 may include a threaded connection part for threaded connection with the source body 7, and the source body 7 may include a threaded connection hole matching the threaded connection part.
  • the connection structure 3 is pushed to the vicinity of the source body 7 At this time, the threaded connection part is aligned with the threaded connection hole, and the threaded connection part is screwed into the threaded connection hole.
  • the rod 2 can be rotated to drive the threaded connection part to rotate, and the threaded connection part can be screwed into the threaded connection hole.
  • the reliability of the threaded connection is high.
  • the threaded connection can prevent the source carrier 7 from falling during the pushing and pulling process, and further prevent the radioactive source from leaking.
  • the end of the connector 1 refers to the end of the connector 1 close to the limiting structure 6.
  • the limit structure 6 is assembled with the end of the connector, the movement of the connector 1 can be restricted.
  • the rod 2 is pushed toward the connector 1, the assembly of the limit structure 6 and the end of the connector can be realized; when the rod 2 is away
  • the separation of the limit structure 6 and the end of the connecting head can be realized.
  • another pull rod 8 of the source guiding device can lift the source carrier 7 from the source guiding tank 9 of the source guiding device to the receiving cavity 10 of the source guiding device.
  • the source carrier 7 is connected to the lead plug of the source tank, and the other pull rod 8 is connected to the lead plug externally.
  • the other pull rod 8 can lift the lead plug together with the source carrier 7 to contain In the cavity 10, the rod 2 can then be pushed to bring the connector 1 close to the source body 7.
  • the connecting structure 3 of the connector 1 contacts the source body 7, the end of the connector and the limiting structure 6 are blocked by the source body 7 Assemble, at this time, the rotating rod 2 can drive the connector 1 to threadedly connect the source body 7.
  • the rod 2 can be pulled back, and the connecting structure 3 can be separated from the limiting structure 6.
  • the connecting head 1 may further include a connecting rod 13 and a swinging member 14 located between the front end and the end of the connecting rod.
  • the contact surface of the swinging member 14 and the accommodating space 5 is an arc surface, and the connecting head can swing along.
  • the arc-shaped surface of the member rotates, the diameter of the swing member 14 is greater than the maximum diameter of the connecting rod 13, and the swing member 14 is located in the accommodating space 5 of the rod member.
  • the front end of the connecting rod refers to the end of the connecting rod 13 close to the connecting structure 3, and the end of the connecting rod refers to the end of the connecting rod 13 close to the limiting structure 6.
  • the arc surface of the swing member 14 matches the shape of the accommodating space 5, and in order to realize the function of the swing member 14 driving the connecting rod 13 to rotate, the diameter of the swing member 14 may be larger than the maximum diameter of the connecting rod 13.
  • the swing member 14 may be cylindrical or spherical.
  • the oscillating member 14 is spherical as an example.
  • the oscillating member may also be cylindrical as shown in FIG. 2, in which the rod passes through the through hole of the oscillating member.
  • the diameter of the swing member 14 may be greater than the maximum diameter of the opening 4.
  • the swing member 14 and the connecting rod 13 may be integrally formed, or the connecting rod 13 may penetrate the swing member 14.
  • the connecting rod 13 penetrates the swinging member 14, the connecting rod 13 and the swinging member 9 can be fixedly connected by a pin or other non-limiting manner to prevent the swinging member 14 from rotating relative to the connecting rod 13.
  • the inner wall of the accommodation space 5 may be arc-shaped, and the arc-shaped surface of the swing member 14 may match the arc-shaped inner wall of the accommodation space 5.
  • the front end of the accommodating space 5 may include an arc-shaped groove 15.
  • the front end of the accommodating space 5 refers to the end of the accommodating space 5 close to the opening 4.
  • the arc-shaped groove 15 and swing The curved surface of the piece 14 can be matched.
  • Fig. 4A is a working principle diagram of the connector.
  • FIG. 4B is a working principle diagram of the connector.
  • the source carrier 7 can be driven to move upward within a certain range.
  • the rotation direction of the oscillating member 14 may be 360°, and this embodiment does not impose any restriction on the rotation direction of the spherical oscillating member.
  • the connecting head 1 can move within a certain range, so that the source carrier 7 and the pull rod are connected.
  • the tie rod and the source carrier 7 are connected by a threaded connection, which can prevent the source carrier 7 from falling and improve the safety of the source replacement operation.
  • Fig. 5 is a schematic structural view of the pull rod.
  • the rod 2 may include a first rod 17 and a second rod 18 that are connected and fixed, and the front end of the first rod 17 is provided with an opening 4.
  • the opening at the end of the first rod 17 may be larger than the maximum size of the connector 1, and the first rod 17 and the second rod 18 may be buckled, pinned, etc.
  • This connection method is connected or formed at one time.
  • the first rod 17 may include a first accommodating cavity 19
  • the second rod 18 may include a second accommodating cavity 20
  • the limiting structure 6 may be disposed in the second accommodating cavity 20.
  • the two containing cavities 20 constitute the containing space 5.
  • the limiting structure 6 may be provided on the second rod 18.
  • the limiting structure 6 may be a limiting groove, which is located in the second accommodating cavity 20, and the end of the connector 1 may further include a limiting portion 21, and the limiting groove may be assembled with the limiting portion 21.
  • the limiting slot may be a quadrangular limiting slot or a hexagonal limiting slot, and correspondingly, the limiting structure 6 is quadrangular or hexagonal.
  • the limiting groove and the limiting structure 6 can prevent the connection head from moving after being limited, and the specific structure and shape of the limiting slot and the limiting structure 6 are not limited.
  • a limit groove may be provided on the surface of the end of the rod 2 away from the connector 1, and a pin matching the limit groove may be provided on the source guide device to prevent the rod 2 from rotating when pushed.
  • the rod 2 may include at least two tie rods connected in sequence; wherein the diameter of each tie rod increases in sequence starting from the tie rod of the connecting head 1.
  • the diameters of the adjacent two tie rods are different, the radiation can be effectively shielded.
  • the diameter of each tie rod increases from the tie rod connected to the connector 1, the radiation shielding effect is better.
  • At least one of the at least two tie rods connected to the connector 1 is made of tungsten alloy. Because tungsten alloy has a high density and high shielding performance, when at least one tie rod connected to the connector 1 is made of tungsten alloy, the radiation shielding effect is better.
  • This exemplary embodiment also provides a source guiding device, as shown in FIG. 6, which is a schematic structural diagram of the source guiding device.
  • the source guide device may include the source guide tank 9 and the pull rod in the above embodiment, wherein:
  • the source guide tank 9 includes a containing cavity 10 in which the source body 7 can be placed;
  • a hole 25 is provided on the source guide tank 9, and the pull rod can pass through the hole 25 to enter the containing cavity 10.
  • a shield 26 is further included between the source guide tank and the draw rod, and the draw rod is fixedly arranged with the source tank 9 through the shield 26.
  • the shielding member 26 may include a base 27 and a tubular portion 28, wherein one end of the base 27 has a groove, and the bottom surface of the groove has a through hole extending along the axis of the base 27, and the adjusting member 22 is disposed in the through hole, and The adjusting member 22 is coaxial with the through hole, and the rod 2 can pass through the through hole.
  • the shielding member 26 may be composed of two parts that can be connected to facilitate the installation of the adjusting member 22.
  • the tubular portion 28 is sleeved on the rod 2, and one end of the tubular portion 28 at least partially extends into the through hole and the opening 24 of the adjusting member 22, so as to fill the gap between the adjusting member 22 and the rod 2.
  • the gap between the through hole and the rod 2 prevents radiation from leaking from the gap.
  • the outer surface of one end of the tubular portion 28 away from the through hole is provided with a shield block 29 protruding in the radial direction.
  • the shield block 29 is located in the groove of the base body.
  • the diameter of the shield block 29 can be larger than that of the tubular portion 28 to To achieve a better shielding effect.
  • the gap position when the pull rod pushes the source carrier 7 from the source loading channel 16 of the source guide device into the corresponding installation position of the radiotherapy equipment can be adjusted.
  • the shielding member 26 can prevent radiation leakage and improve the safety of the source replacement operation.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present application, “plurality” means two or more than two, unless specifically defined otherwise.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection, or it can be an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components.
  • installed can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection, or it can be an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components.
  • the "on” or “under” of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below”, and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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Abstract

一种拉杆及导源装置，拉杆包括杆件（2）及调整件（12），杆件（2）包括拾取端和操作端；调整件（12）位于杆件（2）的拾取端和操作端之间，调整件（12）包括弧面，杆件（2）贯穿弧面。本申请可以调整连接头（1）的连接结构与源匣的相对位置，提高拉杆（2）的灵活度和精准度。

Description

一种拉杆及导源装置
[根据细则91更正 09.03.2020]　
本申请要求在2019年2月3日提交中国专利局、申请号201910109125.0、发明名称为“拉杆及导源装置”的中国发明专利申请以及在2019年2月3日提交中国专利局、申请号为201920188306.2、发明名称为“拉杆及导源装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及载源体倒装设备技术领域，尤其涉及一种拉杆及导源装置。
背景技术
载源体例如钴源匣的装填和更换加填统称载源体的倒装。目前，对于使用载源体的放射治疗设备，常见的换源方式通常为在放射治疗设备的外面用屏蔽块搭建一个屏蔽放射线的操作室，俗称热室，采用专门的工具在热室内进行操作，取下载源体的防护盖，将旧源取出放入钴源倒运容器，再将新源从钴源倒运容器里取出装入放射治疗设备。这种操作过程复杂，需要好几天才能完成，而且由于通过人的操作来完成换源过程，定位精度不够，操作要求高，此外还容易对换源技术人员造成辐射危害。
此外，另外一种换源方式是将装有载源体的治疗头整体取出，运输至换源厂家再执行换源，但是该方式由于不能在设备现场进行换源，必须由专业厂家来完成，相应会造成操作上的极大不便及成本上的提高。
因此，有必要提供一种新的技术方案改善上述方案中存在的一个或者多个问题。
发明内容
本申请的目的在于提供一种拉杆及导源装置，进而至少在一定程度上克服由于相关技术的限制和缺陷而导致的一个或者多个问题。
根据本申请实施例的第一方面，提供一种拉杆，包括杆件及调整件，所述杆件包括拾取端和操作端；
所述调整件位于所述杆件的拾取端和操作端之间，所述调整件包括弧面，所述杆件贯穿所述弧面。
在一个实施例中，所述调整件为球形，或，所述调整件为圆柱形。
在一个实施例中，所述调整件与所述杆件一体成型，或者，所述调整件上设置有开口，所述拉杆贯穿所述开口。
在一个实施例中，所述拉杆的拾取端包括：
连接头，所述连接头的前端设置有连接结构；
所述杆件上设置有开口以及容置空间，连接头设置在所述杆件的容置空间，连接头的连接部从所述杆件的开口伸出于所述容置空间，且所述杆件与所述连接头末端的可接触部分设置有限位结构，所述连接头的末端可活动的与所述限位结构装配。
在一个实施例中，所述连接头包括连接杆以及位于所述连接杆前端和末端之间的摆动件，摆动件与所述容置空间的接触面为弧形面，所述摆动件的直径大于所述连接杆的最大直径，且所述摆动件位于所述杆件的容置空间。
在一个实施例中，所述摆动件为圆柱形或球形。
在一个实施例中，所述摆动件的直径大于所述开口的最大直径。
在一个实施例中，所述摆动件与所述连接杆一体成型；或者，所述连接杆贯穿所述摆动件。
在一个实施例中，所述容置空间的内壁为弧形。
在一个实施例中，所述容置空间的前端包括一段弧形槽，与所述摆动件的弧形面相匹配。
在一个实施例中，所述杆件包括连接固定的第一杆件和第二杆件，所述第一杆件的前端设置有所述开口。
在一个实施例中，所述第一杆件的末端的开口大于所述连接头的最大尺寸。
在一个实施例中，所述第二连接结构设置在所述第二杆件上。
在一个实施例中，所述限位结构为限位槽，所述连接头的末端还包括限位部，所述限位槽与所述限位部装配配合。
根据本申请实施例的第二方面，提供一种导源装置，包括导源罐以及拉杆；
所述导源罐包括可放置载源体的容纳腔；
所述导源罐上设置有孔位，所述拉杆可穿过所述孔位进入所述容纳腔，并可沿所述弧面的方向转动。
在一个实施例中，在所述导源罐和所述拉杆之间还包括屏蔽件，所述拉杆通过屏蔽件与导源罐固定设置。
本申请的实施例提供的技术方案可以包括以下有益效果：
本申请的一种实施例中，通过上述拉杆及导源装置，当杆件运动使得限位结构与连接头的末端装配连接时，旋转杆件可以带动连接头旋转；或者，移动杆件可以带动连接头移动，从而实现连接头的连接结构与外部装置如源匣的连接。当需要调整连接头的连接结构与源匣的相对位置时，可以拉动杆件远离源匣，从而使得连接头的末端与杆件的限位结构脱离开来，再旋转或晃动拉杆，可以调整连接头的连接结构与源匣的相对位置，从而提高拉杆的灵活度和精准度。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更明显：
图1示出本申请示例性实施例中拉杆的一个结构示意图；
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图2示出本申请示例性实施例中调整件d的一个结构示意图；
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图3、图4示出本申请示例性实施例中拉杆的一个结构示意图；
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图4A示出本申请示例性实施例中连接头的一个工作原理图；
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图4B示出本申请示例性实施例中连接头的一个工作原理图；
图5示出本申请示例性实施例中拉杆的一个结构示意图；
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图6示出本申请示例性实施例中导源装置的一个结构示意图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本申请将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施方式中。
此外，附图仅为本申请的示意性图解，并非一定是按比例绘制。图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。附图中所示的一些方框图是功能实体，不一定必须与物理或逻辑上独立的实体相对应。
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本申请提供的一种拉杆，参照图1所示，拉杆包括：杆件2及调整件22，杆件2包括拾取端操作端；调整件22位于杆件2的拾取端和操作端之间。示例的，参照图2所示，调整件22包括弧面23，杆件2贯穿弧面23。
本申请提供的一种拉杆，拉杆与调整件连接，拉杆可以沿调整件的弧面方向做调整和摆动，从而可以提高拉杆的连接灵活性。
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示例的，调整件22可以是为球形，或，调整件22为圆柱形。调整件22与杆件2可以一体成型，或者，调整件22上设置有开口24，杆件2贯穿开口24。当杆件2贯穿调整件22时，调整件22和杆件2可以采用销钉等不限于此的限位方式固定连接，以防止杆件2相对于调整件22旋转。转动杆件2时，拉杆2可沿弧面23的方向转动，从而提高拉杆的灵活性。
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本申请提供的一种拉杆。参考图3、图4所示。该拉杆还包括连接头1和杆件2，其中：
连接头1的前端设置有连接结构3；
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杆件2上设置有开口4以及容置空间5，连接头1设置在杆件2的容置空间5，连接头1的连接结构3从杆件2的开口伸出于容置空间5，且杆件2与连接头末端的可接触部分设置有限位结构6，连接头1的末端可活动的与限位结构6装配，在所述限位结构6与连接头1的末端装配的情况下限制所述连接头1的运动。本实施例中的可活动是指：当杆件2推向连接头1时，可实现限位结构6与连接头1末端的装配；当杆件2离向连接头1时，可实现限位结构6与连接头1末端的拆分。
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本申请提供的一种拉杆，当杆件2运动使得限位结构6与连接头1的末端装配连接时，旋转杆件2可以带动连接头1旋转；或者，移动杆件2可以带动连接头1移动，从而实现连接头1的连接结构3与外部装置如钴源匣的连接。当需要调整连接头1的连接结构3与钴源匣的相对位置时，可以拉动杆件2远离钴源匣，从而使得连接头1的末端与杆件2的限位结构6脱离开来，再旋转或晃动拉杆，可以调整连接头1的连接结构3与钴源匣的相对位置，从而提高拉杆的灵活度和精准度。
示例的，连接头1的前端可以是连接头1靠近导源装置的载源体7的一端。连接结构3可以包括螺纹连接部，螺纹连接部用于与载源体7螺纹连接，载源体7可以包括与螺纹连接部相匹配的螺纹连接孔，当推动连接结构3至载源体7附近时，使螺纹连接部正对螺纹连接孔，将螺纹连接部旋进螺纹连接孔，例如，可以转动杆件2带动螺纹连接部旋转，进而使螺纹连接部旋进螺纹连接孔。螺纹连接的可靠性高，采用螺纹连接的方式可以防止载源体7在推拉过程中掉落，进一步防止放射源发生泄露。
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具体的，连接头1的末端是指连接头1靠近限位结构6的一端。限位结构6与连接头末端装配的情况下可以限制连接头1的运动，当杆件2推向连接头1时，可实现限位结构6与连接头末端的装配；当杆件2离向连接 头1时，可实现限位结构6与连接头末端的拆分。例如，导源装置的另一拉杆8从导源装置的导源罐9中可提起载源体7至导源装置的容纳腔10。本实施例中，该载源体7与导源罐的铅塞子连接，该另一拉杆8在外部与该铅塞子连接，通过该另一拉杆8可以将铅塞子连同载源体7一起提升至容纳腔10，然后可推动杆件2使连接头1靠近载源体7，当连接头1的连接结构3接触载源体7时，由于载源体7的阻挡，连接头末端与限位结构6装配，此时旋转杆件2可带动连接头1螺纹连接载源体7。当然，可以向后拉动杆件2，连接结构3便可从限位结构6中脱离。
在一个实施例中，连接头1还可以包括连接杆13以及位于连接杆前端和末端之间的摆动件14，摆动件14与容置空间5的接触面为弧形面，连接头可沿摆动件的弧形面方向转动，摆动件14的直径大于连接杆13的最大直径，且摆动件14位于杆件的容置空间5。
具体的，连接杆前端是指连接杆13靠近连接结构3的一端，连接杆末端是指连接杆13靠近限位结构6的一端。摆动件14的弧形面与容置空间5的形状相匹配，且为了实现摆动件14带动连接杆13旋转的功能，摆动件14的直径可以大于连接杆13的最大直径。
示例的，摆动件14可以是圆柱形或球形。图3中以摆动件14为球形为例，摆动件也可以是如图2所示的圆柱形，其中杆件贯穿摆动件的通孔。
具体的，为防止连接头1从容置空间5脱落，摆动件14的直径可以大于开口4的最大直径。
具体的，摆动件14可以与连接杆13可以一体成型，或者连接杆13可以贯穿摆动件14。当连接杆13贯穿摆动件14时，连接杆13和摆动件9可以采用销钉等不限于此的限位方式固定连接，以防止摆动件14相对于连接杆13旋转。
具体的，容置空间5的内壁可以为弧形，摆动件14的弧形面可以与容置空间5的弧形内壁相匹配。容置空间5的前端可以包括一段弧形槽15，容置空间5的前端是指容置空间5靠近开口4的一端，为了使连接头1实现 更好的转动效果，弧形槽15与摆动件14的弧形面可以相匹配。
本实施例中，限位结构6与连接头末端拆分的情况下，连接头1可沿摆动件14的弧形面摆动。例如，参考图4A所示，图4A是连接头的一个工作原理图，当连接头1沿逆时针方向转动时，可带动载源体7在一定范围内向下活动。参考图4B所示，图4B是连接头的一个工作原理图，当连接头1沿顺时针方向转动时，可带动载源体7在一定范围内向上活动。当摆动件14是球形时，摆动件14的转动方向可以是360°，本实施例对球形摆动件的转动方向不做任何限制。当推动拉杆使载源体7与拉杆连接时，连接头1可在一定范围内活动，以使载源体7与拉杆实现连接。
本申请实施方式中，一方面，通过螺纹连接的方式连接拉杆和载源体7，可以防止载源体7掉落，提高换源作业的安全性。
在另一个实施例中，如图5所示，图5是拉杆的一个结构示意图。杆件2可以包括连接固定的第一杆件17和第二杆件18，第一杆件17的前端设置有开口4。
具体的，为了便于安装和更换连接头1，第一杆件17的末端的开口可以大于连接头1的最大尺寸，第一杆件17和第二杆件18可以通过卡扣、销钉等不限于此的连接方式连接，或者一次成型。
示例的，第一杆件17可以包括第一容纳腔19，第二杆件18可以包括第二容纳腔20，限位结构6可以设置在第二容纳腔20内，第一容纳腔19和第二容纳腔20构成容置空间5。示例的，限位结构6可以设置在第二杆件18上。
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示例的，限位结构6可以为限位槽，限位槽位于第二容纳腔20内，连接头1的末端还可以包括限位部21，限位槽可以与限位部21装配配合。本申请中，限位槽可以是四边形限位槽或六边形限位槽，对应的，限位结构6为四边形或六边形。本申请中限位槽和限位结构6限位后能够防止连接头运动，对限位槽和限位结构6的具体结构和形状不做限定。
在一个实施例中，杆件2远离连接头1的一端的表面可以设置限位 槽，导源装置上可以设有与该限位槽配合的销钉，用以防止杆件2在推动时旋转。
在一个实施例中，杆件2可以包括依次连接的至少2节拉杆；其中从连接连接头1的拉杆开始各节拉杆的直径依次增大。相邻两节拉杆的直径大小不同时，可以有效屏蔽辐射，其中，从连接连接头1的拉杆开始各节拉杆的直径依次增大时，屏蔽辐射的效果更好。
在一个实施例中，至少2节拉杆中与连接头1连接的至少一节拉杆采用钨合金材质。因为钨合金的密度大，屏蔽性能高，所以与连接头1连接的至少一节拉杆采用钨合金材质时，屏蔽辐射的效果更好。
本示例实施方式中还提供了一种导源装置，如图6所示，图6是导源装置的一个结构示意图。该导源装置可以包括导源罐9以及上述实施例中的拉杆，其中：
导源罐9包括可放置载源体7的容纳腔10；
导源罐上9设置有孔位25，拉杆可穿过孔位25进入容纳腔10。
示例的，在导源罐和拉杆之间还包括屏蔽件26，拉杆通过屏蔽件26与导源罐9固定设置。
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示例的，屏蔽件26可以包括基体27和管状部28，其中基体27的一端具有凹槽，该凹槽底面具有沿基体27轴向贯穿的贯穿孔，调整件22设置于该贯穿孔内，且该调整件22与该贯穿孔同轴，杆件2可穿过该贯穿孔。示例的，屏蔽件26可以由可两部分连接组成，以方便安装调整件22。
具体的，管状部28套设于杆件2上，且管状部28一端至少部分伸入贯穿孔和该调整件22的开口24内，可以填充调整件22和杆件2之间、管状部28的贯穿孔和杆件2之间的缝隙，防止辐射从上述缝隙泄露。
具体的，管状部28远离贯穿孔的一端外表面沿径向具有凸设的屏蔽块29，该屏蔽块29位于基体的凹槽内，屏蔽块29的直径可以大于管状部28的管径，以达到更好的屏蔽辐射的效果。
本申请实施方式中，一方面，通过拉杆上的连接头1或调整件22， 可以在拉杆推动载源体7从导源装置的装源通道16进入放射治疗设备相应安装位时的间隙位置进行调整，提高换源作业的灵活度和精准度。另一方面，通过设置屏蔽件26可以防止辐射泄露，提高换源作业的安全性。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方， 或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行接合和组合。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本申请的真正范围和精神由所附的权利要求指出。

Claims (16)

  1. 一种拉杆，其特征在于，所述拉杆包括：杆件及调整件，
    所述杆件包括拾取端和操作端；
    所述调整件位于所述杆件的拾取端和操作端之间，所述调整件包括弧面，所述杆件贯穿所述弧面。
  2. 根据权利要求1所述的拉杆，其特征在于，所述调整件为球形，或，所述调整件为圆柱形。
  3. 根据权利要求1所述的拉杆，其特征在于，所述调整件与所述杆件一体成型，或者，所述调整件上设置有开口，所述拉杆贯穿所述开口。
  4. 根据权利要求1所述的拉杆，其特征在于，所述拉杆的拾取端包括：
    连接头，所述连接头的前端设置有连接结构；
    所述杆件上设置有开口以及容置空间，连接头设置在所述杆件的容置空间，连接头的连接部从所述杆件的开口伸出于所述容置空间，且所述杆件与所述连接头末端的可接触部分设置有限位结构，所述连接头的末端可活动的与所述限位结构装配。
  5. 根据权利要求2所述的拉杆，其特征在于，所述连接头包括连接杆以及位于所述连接杆前端和末端之间的摆动件，摆动件与所述容置空间的接触面为弧形面，所述摆动件的直径大于所述连接杆的最大直径，且所述摆动件位于所述杆件的容置空间。
  6. 根据权利要求5所述的拉杆，其特征在于，所述摆动件为圆柱形或球形。
  7. 根据权利要求5所述的拉杆，其特征在于，所述摆动件的直径大于所述开口的最大直径。
  8. 根据权利要求5所述的拉杆，其特征在于，所述摆动件与所述连接杆一体成型；或者，所述连接杆贯穿所述摆动件。
  9. 根据权利要求5所述的拉杆，其特征在于，所述容置空间的内壁为弧 形。
  10. 根据权利要求5所述的拉杆，其特征在于，所述容置空间的前端包括一段弧形槽，与所述摆动件的弧形面相匹配。
  11. 根据权利要求4所述的拉杆，其特征在于，所述杆件包括连接固定的第一杆件和第二杆件，所述第一杆件的前端设置有所述开口。
  12. 根据权利要求11所述的拉杆，其特征在于，所述第一杆件的末端的开口大于所述连接头的最大尺寸。
  13. 根据权利要求11所述的拉杆，其特征在于，所述第二连接结构设置在所述第二杆件上。
  14. 根据权利要求4所述的拉杆，其特征在于，所述限位结构为限位槽，所述连接头的末端还包括限位部，所述限位槽与所述限位部装配配合。
  15. 一种导源装置，其特征在于，包括导源罐以及如权要求1-14任一所述的拉杆；
    所述导源罐包括可放置载源体的容纳腔；
    所述导源罐上设置有孔位，所述拉杆可穿过所述孔位进入所述容纳腔，并可沿所述弧面的方向转动。
  16. 根据权利要求15所述的导源装置，其特征在于，在所述导源罐和所述拉杆之间还包括屏蔽件，所述拉杆通过屏蔽件与导源罐固定设置。
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