WO2019100807A1

WO2019100807A1 - A source guide device and system

Info

Publication number: WO2019100807A1
Application number: PCT/CN2018/104086
Authority: WO
Inventors: 刘海峰; 肖世群; 高琪
Original assignee: 西安大医集团有限公司
Priority date: 2017-11-21
Filing date: 2018-09-05
Publication date: 2019-05-31
Also published as: CN107837465A; CN107837465B

Abstract

A source guide device (1) and a source guide system. The source guide device (1) comprises: a support frame (11), a source guide container (12), and a pull rod (13). The source guide container (12) is provided on the support frame (11) and comprises a source container component (121) and a shield door (122). The shield door (122) is used to open or close the source guide container component (121). The pull rod (13) passes through the source guide container component (121) and extends into the source guide container component (121). The pull rod (13) can pull in or push out a radioactive source (S) from the source guide container (121) when the shield door (122) is opened. The source guide device (1) achieves insertion or removal of the radioactive source (S) without requiring construction of a hot cell. The invention is simple to operate, and saves time and labor.

Description

Source guiding device and system

The present application claims priority to Chinese Patent Application No. 200911163085.5, entitled "A Source Device and System", filed on November 21, 2017, the entire contents of which is incorporated herein by reference. in.

Technical field

The present invention relates to the field of radio frequency flip chip technology, and in particular, to a source device and system.

Background technique

Radiation therapy equipment is a medical device that uses radiation to treat human diseases. At present, for radiotherapy equipment that uses radioactive sources to generate radiation, the commonly used source, ie, the source, is derived and/or imported as follows:

Before introducing the radioactive source into the radiotherapy apparatus, a shielding room for shielding radiation is built on the outside of the radiotherapy apparatus, commonly known as a hot chamber, and the storage tank and the pick-up device for carrying the radioactive source are placed in the hot chamber. The lifting device lifts the basket provided with the radiation source from the lead canister and places it in a designated position of the heat chamber, and introduces the radiation source into the radiation therapy device by operating the pickup device outside the heat chamber. After the source is completed, the hot chamber constructed by the shielding block is removed.

However, the above-mentioned method of constructing a heat source by constructing a heat chamber has the following problems:

First, since the shielding block for building the heat chamber is composed of heavy metal materials, and the space to be built is to accommodate the operation space of the storage source tank and the pick-up device, it takes a long time to build the heat chamber and remove the heat chamber, labor intensity, and difficulty in operation. ;

Second, after a certain period of time, the radiotherapy equipment becomes weak due to decay. For example, the half-life of cobalt-60 is 5.27 years. In order to ensure the dose rate at the focus, the radioactive source needs to be performed every 6 years or so. Replacement, that is, the old radioactive source in the radiotherapy equipment is exported, and the new radioactive source is introduced, so that it is necessary to build the hot chamber again, but it is difficult to build the hot chamber again;

Third, if the radiotherapy equipment fails during use, especially when the treatment head is faulty, the maintenance personnel need to enter the treatment room. Since the radioactive source cannot be easily removed, the staff is prone to radiation leakage when the maintenance is overhauled. The radiation risk of the maintenance personnel.

Summary of the invention

In order to solve the above technical problems, the present invention provides a source guiding device and system capable of realizing introduction and/or derivation of a radiation source without the need to build a heat chamber.

In order to achieve the object of the present invention, an embodiment of the present invention provides a source guiding device, the device comprising: a support frame; a source guiding canister disposed on the support frame, including a guiding source can body and a shielding door, wherein the shielding door For opening or closing the guide tank body; a pull rod extending through the guide tank body into the guide tank body, and when the screen door is opened, the pull rod can pull the radioactive source into or out Guide the source tank.

The embodiment of the present invention further provides a guiding source system, comprising: a radiation therapy device, and the above-mentioned guiding device; wherein the guiding device is connected to a treatment head of the radiation therapy device, and when the shielding door is opened, the The source device pushes a source of radiation in the source canister into the treatment head of the radiation therapy device via the pull rod or pulls a source of radiation from the treatment head of the treatment device to the source canister.

The embodiment of the present invention further provides a source system, including: a storage source tank, and the above-mentioned source guiding device; wherein the source guiding device is docked with the storage source tank, and when the shielding door is opened, the guiding source device passes The pull rod pulls a radiation source in the storage tank into the source tank, or pushes a radiation source in the source tank into the storage tank.

Compared with the prior art, the source device in the embodiment of the present invention includes a support frame, a source guide can and a tie rod, wherein the source tank is disposed on the support frame, and the source tank includes a guide tank body and is used for opening Or closing the shielding door of the guiding tank body; the pull rod extends through the guiding source tank into the guiding source tank body, and when the shielding door is opened, the pulling rod can pull in or push out the radioactive source Guide the source tank. The source device may derive the source from the device that is docked therewith, store it in the source tank, or introduce the source stored in the source tank into the device that is docked therewith. Therefore, whether it is to install a radiation source for the treatment device or to replace the radiation source in the treatment device, it is not necessary to build a heat chamber, and the source device can introduce a new radiation source in the storage source tank into the radiation therapy device docked thereto, or , the old radioactive source in the radiotherapy device docked with it is exported to a storage source tank and the new radioactive source in the other storage source tank is introduced into the radiotherapy device docked thereto, which is simple in operation, saves time and labor; When the treatment head of the treatment device fails, the source device can also be easily docked with it to derive and store the radiation source in the treatment head to avoid the radiation risk of the maintenance personnel.

Other features and advantages of the invention will be set forth in the description which follows, The objectives and other advantages of the invention may be realized and obtained by means of the structure particularly pointed in the appended claims.

DRAWINGS

The drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the specification, which together with the embodiments of the present application are used to explain the technical solutions of the present invention, and do not constitute a limitation of the technical solutions of the present invention.

1 is a schematic overall structural diagram of a source guiding device according to an embodiment of the present invention;

2 is a cross-sectional view of a source guiding device when a screen door is opened according to an embodiment of the present invention;

3A and 3B are schematic structural views 1 of a support frame in a source guiding device according to an embodiment of the present invention;

4A and 4B are schematic structural views 2 of a support frame in a source guiding device according to an embodiment of the present invention;

5A and 5B are schematic structural diagrams 3 of a support frame in a source guiding device according to an embodiment of the present invention;

6 is a schematic cross-sectional view of the source device shown in FIG. 5B when the screen door is opened;

FIG. 7 is a schematic structural diagram of a shielding door and an adapter in a source guiding device according to an embodiment of the present invention; FIG.

8 is a cross-sectional view showing the inside of a sliding channel in a source guiding device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a radiation source according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a storage tank according to an embodiment of the present invention; FIG.

11A-11C are schematic structural diagrams of a source guiding system according to an embodiment of the present invention;

12A-12C are schematic structural diagrams of another source system according to an embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

FIG. 1 is a schematic diagram of an overall structure of a source guiding device according to an embodiment of the present invention. As shown in FIG. 1 , the device 1 includes a support frame 11 , a guiding source can 12 , and a pull rod 13 . The guiding source can 12 is disposed on the support The frame 11 includes a source can body 121 and a screen door 122, wherein the screen door 122 is used to open or close the source tank body 121; in conjunction with FIG. 2, the tie rod 13 extends through the source tank body 121. The guide rod body 121 is described, and when the screen door 122 is opened, the pull rod 13 can pull the source S into or out of the source tank body 121.

In the present embodiment, the source device 1 can introduce the source S into the source can 12 through the pull rod 13 when the screen door 122 is opened, or can export the source S stored in the source tank 12 to other sources. In the device.

The structure of the support frame 11 for supporting the source can 12 can be designed in different types as needed. In an embodiment, as shown in FIG. 3A, the support frame 11 may be configured as: a liftable support frame that can be raised or lowered in a direction indicated by an arrow A; and/or a support frame 11 includes a rotation axis O which is rotatable about the rotation axis O in the direction indicated by the arrow B. By way of example, the source can 12 is rotated about the axis of rotation O to the position shown in FIG. 3B by the position shown in FIG. 3A, rotated by 90 degrees, and of course can be rotated to other angles as needed.

In another embodiment, as shown in FIG. 4, the support frame 11 includes a support frame body 111 and a rolling mechanism (112A, 112B), wherein a rolling mechanism is mounted at the bottom of the support frame body 111. Here, as shown in FIG. 4A, the rolling mechanism is a pulley 112A, and the roller can slide along a preset track; as shown in FIG. 4B, the rolling mechanism can also be a roller 112B, for example, the roller can be operated to scroll to a preset position. Of course, the scrolling mechanism shown can also be other scrollable devices.

Further, as shown in FIG. 5A, the support frame body 111 includes: a first support plate 1111, a connecting member 1112, and a second support plate 1113, wherein the second support plate 1113 passes through the connecting member 1112 and the first A support plate 1111 is connected. In order to make the support frame 11 more stable, in conjunction with FIG. 5B, the support frame body 111 further includes: a first baffle 1114 and a second baffle 1115, wherein the first support plate 1111 and the second support plate 1113 The bottom sides of the bottom are connected by the first baffle 1114 and the second baffle 1115. Here, the first baffle 1114 and the second baffle 1115 are detachable baffles.

6 is a cross-sectional view of the source device shown in FIG. 5B when the screen door is opened. As shown in FIG. 6, the screen door 122 is mounted in the sliding channel 1211 of the source tank body 121, and the screen door 122 is in the The direction of movement in the sliding passage 1211 (the direction indicated by the arrow C) intersects the pushing and pulling direction of the pull rod 13 (the direction indicated by the arrow D). Further, the sliding channel 1211 is disposed at the bottom of the guiding can body 121, and the moving direction of the shielding door 122 in the sliding channel 1211 is perpendicular to the pushing and pulling direction of the pull rod 13. In order to facilitate the sliding of the screen door 122 installed in the sliding passage 1211, in conjunction with FIG. 7, an engageable rail 14 is disposed between the sliding passage 1211 and the screen door 122.

Further, as shown in FIG. 7, the shielding door 122 includes: a shielding door body 1221 and a pushing and pulling mechanism 1222; wherein the pushing and pulling mechanism 1222 is disposed on the shielding door body 1221, and is opened by the pushing and pulling mechanism 1222 or The screen door 1221 is closed. Further, the push-pull mechanism 1222 includes: a driving device 12221, a limiting bracket 12222 and a push-pull bar 12223; wherein the limiting bracket 12222 is connected to the guiding can body 121; one end of the pushing and pulling bar 12223 is fixedly connected with the shielding door body 1221. The other end is connected to the driving device 12221 through the limiting bracket 12222. The driving device 12221 includes: a hand crank and/or a driving motor; the limiting bracket 12222 is a U-shaped frame.

In an embodiment, in order to facilitate the pulling or pushing of the radiation source S into the source can body 121, as shown in FIG. 6, the sliding channel 1211 is provided with a raceway 1212. When the shielding door 122 is opened, the The tie rod 13 can pull the radiation source S through the raceway 1212 or push out the source tank body 121. In another embodiment, as shown in FIG. 8, the end surface 12111 of the sliding channel 1211 has a V-shaped cross section. Correspondingly, the end surface 1223 of the shielding door 122 has a V-shaped cross section; When the door 122 is opened, the pull rod 13 can pull the radiation source S along the V-shaped groove or push out the guide tank body 121. Further, the V-shaped groove is provided with a raceway 1212. Illustratively, the raceway 1212 is disposed at a position where the V-shaped groove is tangential to the radiation source S. Correspondingly, the V-shaped protrusion is provided with a a groove 1224 accommodating the raceway; when the screen door 122 is closed, the raceway 1212 is located in the groove 1224, and when the screen door 122 is opened, the pull rod 13 can pass the source S The raceway 1212 pulls in or pushes out the source can body 121. Thus, the guide device 1 can more easily pull or push the source S into or out of the source can 121 through the raceway 1212.

When the source S in the source device or the source S in the source tank 12 needs to be introduced or exported, the source device to be connected to the source tank 12 needs to be docked, in order to better connect the source device to the source tank 12, As shown in FIG. 7, the source can 12 further includes: an adapter 15 having an opening 151 installed at the bottom of the source can 121, and passing through the opening 151 when the screen door 122 is opened The pull rod 13 can pull the source S into or out of the source tank 121. When the cross section of the end surface 12111 of the sliding passage 1211 is a V-shaped groove, one side of the opening 151 is also V-shaped.

Further, as shown in FIG. 9, in order to reduce the radiation leakage of the radiation source S, the radiation source S includes a source body S1, a carrier body S2, and a shield S3, wherein the source body S1 is fixed on the carrier body S2. The carrier S2 and the shield S3 are connected. Thus, the radiation generated by the source body S1 on the carrier S2 can be shielded by the shield S3 after being loaded into the source device. Here, the source body S1 is a radionuclide such as cobalt-60, and decay can generate gamma rays, which are recorded as gamma rays.

More specifically, when it is required to derive the source S from the device to be guided, the source device 1 first interfaces the source device 1 with the source can 12, and then opens the screen door 122, and the source device 1 is to be guided by the pull rod 13. The radiation source S is pulled into the source tank 121, and finally the screen door 122 is closed to separate the source device 1 from the source tank 12; when the source S stored in the source tank 12 needs to be introduced into the source device 1 to be guided The source device 1 firstly interfaces the source device 1 with the source tank 12, and then opens the screen door 122. The source S in the source tank 121 of the source tank 12 is loaded into the source device 1 through the pull rod 13, and finally The source device 1 is separated from the source tank 12.

It should be noted that the source device to be used may be the radiation therapy device 2 using the radiation source S, as shown in FIG. 11 . Of course, the source device to be guided may also be the storage source tank 3 as shown in FIG. 10 for storage. The source S, where the plug 31 and the can 32 of the source tank 3 are in a separated state, and may be other types of devices that can be interfaced with the source device 1, and are not specifically limited in the embodiment of the present invention.

It will be understood by those skilled in the art that if the source device is the radiation therapy device 2, before the source device 1 docks the radiation therapy device 2 with the source canister 12, it is necessary to expose the treatment head of the radiation therapy device 2 in which the radiation source S is mounted; If the source device is the storage source tank 3, the source device 3 needs to open the plug 31 of the source tank 3 before docking the source tank 3 with the source tank 12. If the source device is to be connected to the source device 1, other types of Before the device, the source device 1 docks the other types of devices with the source can 12, it is also necessary to expose the place where the source S is installed.

11A-11C are schematic structural diagrams of a source system according to an embodiment of the present invention, as shown in FIGS. 11A-11C, the system includes: a radiotherapy apparatus 2, and the source device 1 of any of the above embodiments; Wherein, the source device 1 is connected to the treatment head 21 of the radiation therapy apparatus 2, and when the screen door 122 is opened, the source device 1 passes the source S in the source tank 12 through the pull rod 13. The radiation source S is pushed into the treatment head 21 of the radiation therapy device 2 or from the treatment head 21 of the treatment device 2 to the source canister 12.

The above-described source system may derive the radiation source S from the treatment head 21 of the radiation therapy apparatus 2, store it in the source tank 12, or may export the radiation source S stored in the source tank 12 to the treatment head 21 of the radiation therapy apparatus 2. in.

Further, as shown in FIGS. 11A-11C, the system further includes an intermediate connector 4 for connecting the treatment head 21 of the radiation therapy device 2 and the source device 1. Specifically, the intermediate connecting member 4 includes a transport passage 41 in which a raceway 42 is disposed for pushing the radiation source S from the guide source tank 12 into the radiation through the raceway 42. In the treatment head 21 of the treatment device 2, or from the treatment head 21 of the treatment device 2, the source S is pulled out to the source tank 12.

12A-12C are schematic structural diagrams of a source system according to an embodiment of the present invention, as shown in FIGS. 12A-12C, the system includes: a storage source tank 3, and the source device 1 of any of the above embodiments; Wherein, the source device 1 is docked with the storage tank 3, and when the screen door 122 is opened, the source device 1 pulls the source S in the storage tank 3 through the rod 13 The source tank 12 is described, or the source S in the source tank 12 is pushed into the storage tank 3.

The above-described source system may derive the source S from the source tank 3 and store it in the source tank 12, or may discharge the source S stored in the source tank 12 to the source tank 3.

Further, as shown in FIGS. 12A-12C, the system further includes a shield ring 5 that is docked with the source device 1 through the shield ring 5.

Further, as shown in FIGS. 12A-12C, the system further includes: a fixing bracket 6 in which the storage tank 3 is located, and the shielding ring 5 is sleeved on the storage tank 3 It is supported on the can and supported by the fixing bracket 6.

The installation of the new radioactive source S of the radiotherapy apparatus 2 and the replacement of the old radioactive source S can be realized by the above two kinds of guiding source systems, and specific steps will be described below in detail.

When the radiotherapy apparatus 2 needs to install a new radioactive source S, the following steps are included:

Step 101, the source device 1 is docked with the storage tank 3 storing the new source S, as shown in FIG. 12A;

Step 102, the source device 1 opens the screen door 122, through the drawbar 13 to pull the new source S into the source tank body 121, as shown in Figure 12B to Figure 12C;

Step 103, the source device 1 closes the screen door 122, and separates the source device 1 from the storage tank 3. At this time, the source device 1 has introduced a new source S into the source tank 121;

Step 104, the source device 1 is docked with the radiation therapy device 2, as shown in FIG. 11A;

Step 105, the source device 1 opens the screen door 122, the new source S in the source can body 121 is pushed into the treatment head 21 of the radiation therapy device 2 through the pull rod 13, as shown in FIG. 11B to FIG. 11C;

Step 106, the source device 1 is separated from the radiation therapy device 2.

Thus, the introduction of a new source S in the reservoir 3 into the radiation therapy device 2 is achieved by the above steps 101-106.

When the radiation therapy apparatus 2 needs to replace the old source S' with a new source S, the following steps are included:

Step 201, the source device 1 docked with the radiation therapy device 2, as shown in Figure 11C;

Step 202, the source device 1 opens the screen door 122, and pulls the old source S' of the radiotherapy apparatus 2 into the source tank body 121 through the pull rod 13, as shown in FIG. 11C to FIG. 11B; at this time, the source device 1 has already been used. The radiation source S' is introduced into the source tank 121;

Step 203, the source device 1 closes the screen door 122 and is separated from the radiation therapy device 2;

Step 204, the source device 1 is docked with the first storage tank 3', as shown in FIG. 12A, the first storage tank 3' is empty;

Step 205, the source device 1 opens the screen door 122, and pushes the old source S' into the first storage tank 3' through the drawbar 13, as shown in Fig. 12C to Fig. 12B. At this time, the first source tank 3' Stored with an old source S';

Step 206, the source device 1 is separated from the first storage tank 3', and the first storage tank 3' is closed by the plug 31';

Same as the foregoing steps 101-106.

Thus, the old radioactive source S' in the radiotherapy apparatus 2 is exchanged by the above steps 201-206 and steps 101-106, and a new radioactive source S is introduced.

While the embodiments of the present invention have been described above, the described embodiments are merely for the purpose of understanding the invention and are not intended to limit the invention. Any modification and variation in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. The scope defined by the appended claims shall prevail.

Claims

A source device, characterized in that the device comprises:

Support frame

a guiding source tank disposed on the support frame, comprising a guiding source tank body and a shielding door, wherein the shielding door is used for opening or closing the guiding source tank body;

A pull rod extends through the source tank into the source tank, and when the screen door is opened, the rod can pull or push the source into the source tank.
The source device according to claim 1, wherein the source tank comprises:

a sliding passage, the screen door being installed in the sliding passage, and a moving direction of the shielding door in the sliding passage intersecting a pushing and pulling direction of the tie rod.
The power guiding device according to claim 2, wherein a sliding path is disposed in the sliding passage, and when the shielding door is opened, the pulling rod can pull a radioactive source through the rolling passage or push out the Guide the source tank.
The guiding device according to claim 2, wherein the end surface of the sliding passage has a groove shape, and correspondingly, the end surface of the shielding door has a protruding shape; when the shielding door is opened, the pulling rod can be A source of radiation is drawn through the groove or pushed out of the source can.
The source device according to claim 1, wherein the screen door comprises:

The door body and the push-pull mechanism are disposed, wherein the push-pull mechanism is disposed on the screen door body, and the screen door body is opened or closed by the push-pull mechanism.
The source device according to claim 5, wherein the push-pull mechanism comprises:

a driving device, a limiting bracket and a push-pull bar; wherein the limiting bracket is connected to the guiding can body; one end of the push-pull bar is fixedly connected to the shielding door body, and the other end passes through the limiting bracket and The drive device is connected.
The source device according to claim 6, wherein the limiting bracket is a U-shaped bracket.
The source device according to claim 1, wherein the support frame comprises:

A support frame body and a rolling mechanism, wherein the rolling mechanism is mounted at a bottom of the support frame body.
The source device according to claim 8, wherein the support frame body comprises:

a first support plate, a connecting member and a second support plate, wherein the second support plate is coupled to the first support plate by the connecting member.
The power guiding device according to claim 8, wherein the support frame further comprises:

The first baffle and the second baffle, the bottom sides of the first support plate and the second support plate are connected by the first baffle and the second baffle.
The source device according to claim 10, wherein the first baffle and the second baffle are detachable baffles.
The source device according to claim 1, wherein the support frame is a support frame that can be raised and lowered and/or that can rotate the source canister about a rotation axis.
The source device according to claim 1, wherein the source can further comprises:

An adapter having an opening is mounted at the bottom of the source can body, and the pull rod can pull the source into or out of the source can through the opening when the screen door is opened.
The source device according to claim 1, wherein the source of radiation comprises:

a source body, a carrier body and a shield, wherein the carrier body and the shield are connected, and the source body is fixed on the carrier.
A source system comprising: a radiation therapy device, and the source device of any of claims 1-14; wherein the source device is coupled to a treatment head of the radiation therapy device, when When the shielding door is opened, the guiding device pushes the radiation source in the guiding source tank into the treatment head of the radiation therapy device through the pull rod, or pulls the radiation source from the treatment head of the treatment device to the Describe the source tank.
The source system of claim 15 wherein the system further comprises: an intermediate connector for connecting the treatment head of the radiation therapy device and the source device.
The source system according to claim 16, wherein said intermediate connector comprises: a transport passage, wherein said transport passage is provided with a raceway for pushing a radiation source from said guide source tank through said raceway Into the treatment head of the radiation therapy device, or to pull a source of radiation from the treatment head of the treatment device to the source canister.
A source system, comprising: a storage tank, and the source device according to any one of claims 1-14; wherein the source device is docked with the storage tank, when the screen door is opened And the source device pulls the radiation source in the storage tank into the source tank through the pull rod, or pushes the radiation source in the source tank into the storage tank.
The source system of claim 18, wherein the system further comprises: a shield ring, the reservoir tank being docked with the source device through the shield ring.
The guidance system according to claim 18, wherein the system further comprises: a fixing bracket, the storage tank is located in the fixing bracket, and the shielding ring is sleeved on the tank mouth of the storage tank And supported by the fixed bracket.