CN220608887U - Gamma knife equipment with radiation protection cabin - Google Patents
Gamma knife equipment with radiation protection cabin Download PDFInfo
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- CN220608887U CN220608887U CN202320925223.3U CN202320925223U CN220608887U CN 220608887 U CN220608887 U CN 220608887U CN 202320925223 U CN202320925223 U CN 202320925223U CN 220608887 U CN220608887 U CN 220608887U
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- 230000005855 radiation Effects 0.000 title claims abstract description 97
- 238000009434 installation Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002775 capsule Substances 0.000 claims 3
- 230000001681 protective effect Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 3
- 108010066057 cabin-1 Proteins 0.000 description 12
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 4
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000001225 therapeutic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000009443 Vascular Malformations Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000007917 intracranial administration Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 238000002673 radiosurgery Methods 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- 238000002719 stereotactic radiosurgery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application discloses gamma knife equipment with radiation protection cabin relates to the radiation protection technology field to solve current medical personnel and need wear protective clothing and get into the computer lab operation, protect too loaded down with trivial details through the mode of wearing protective clothing, and medical personnel wear protective clothing and operate comparatively inconvenient problem. The gamma knife device includes: a gamma knife control cabin, one side of which is provided with a treatment window; the treatment bed is arranged on one side of the gamma knife control cabin and is connected with the gamma knife control cabin, wherein the treatment bed is positioned below the treatment window; the radiation protection combined plate is arranged above the treatment bed and is used for covering the treatment bed to form a radiation protection cabin so as to seal stray radiation emitted by the treatment window in the radiation protection cabin.
Description
Technical Field
The application relates to the technical field of radiation protection, in particular to gamma knife equipment with a radiation protection cabin.
Background
The head gamma knife is a stereotactic radiosurgery therapeutic equipment which integrates stereotactic technology and radiosurgery technology into a whole and mainly treats various intracranial tumors, cerebral vascular malformations, nerve functional diseases and the like. The device adopts a gamma ray geometric focusing mode, and the planned large-dose gamma rays are intensively irradiated to a preselected target point in the body through precise three-dimensional orientation, so that tissues in the target point are destroyed once and lethally, and the treatment effect of surgical excision or damage is achieved. Because the device uses gamma rays to replace a scalpel, the irradiation range is quite obvious from the boundary of normal tissues during treatment, and the edges are tidy like the cutting, people can visually refer to as a gamma knife, wherein each single ray of the gamma knife passes through a human body at a safe dose, and the dose at a focus can be as large as one-time lethal to focal tissues, so that the purpose of atraumatic radiotherapy is achieved.
The gamma knife device is filled with a certain cobalt-60 radioactive source, and in a non-treatment state, the cobalt-60 radioactive source of the gamma knife device is positioned at a source closing position, and the outermost layer of the gamma knife device is provided with a shielding body for shielding radioactive rays, so that in the preparation work before treatment, the shielding of the device can effectively protect medical staff and reduce the irradiated dose; in the treatment state, the cobalt-60 radioactive source of the gamma knife device is in an open source position, namely a channel leading to a focus is opened, and a certain amount of stray radiation exists outside the gamma knife device due to strong penetrability of rays, so that the safety of medical staff is influenced;
therefore, the prior art is to construct a special radiation protection machine room to put gamma knife equipment, so that stray radiation outside the gamma knife equipment can be isolated in the machine room in the treatment process, in order to protect the safety of medical staff, the medical staff only needs to withdraw from the machine room in the open source treatment process, however, under special conditions, the treatment process is that the medical staff needs to enter the machine room for treatment, in order to avoid the medical staff to receive radiation, the safety of the medical staff is protected, the existing medical staff needs to put on protective clothing to enter the machine room for operation, the protection is too complicated in a mode of putting on the protective clothing, and the medical staff wears the protective clothing to operate more inconveniently.
Accordingly, the prior art is still in need of improvement.
Disclosure of Invention
To the not enough of prior art, this application provides a gamma knife equipment with radiation protection cabin to solve current medical personnel and need wear protective clothing and get into the computer lab operation, protect too loaded down with trivial details through the mode of wearing protective clothing, and medical personnel wear protective clothing and operate comparatively inconvenient problem.
To solve the above technical problem, an embodiment of the present application provides a gamma knife device with a radiation protection cabin, including:
a gamma knife control cabin, one side of which is provided with a treatment window;
the treatment bed is arranged on one side of the gamma knife control cabin and is connected with the gamma knife control cabin, wherein the treatment bed is positioned below the treatment window;
the radiation protection combined plate is arranged above the treatment bed and is used for covering the treatment bed to form a radiation protection cabin so as to seal stray radiation emitted by the treatment window in the radiation protection cabin.
In one implementation, the radiation protection composition board comprises an arc-shaped bottom board and at least one arc-shaped cover board matched with the arc-shaped bottom board, the arc-shaped bottom board is fixedly arranged on the treatment bed, the arc-shaped cover board slides relative to the arc-shaped bottom board, and the treatment bed is covered by the arc-shaped bottom board, wherein the arc-shaped bottom board and the arc-shaped cover board are radiation protection boards.
In one implementation, the radiation protection composition board comprises at least two arc-shaped cover boards, wherein the two ends of the treatment bed are respectively provided with an installation shaft, the two ends of the arc-shaped cover boards are respectively and rotatably arranged on the installation shafts, and the arc-shaped cover boards are radiation protection boards.
In one implementation, the two ends of the treatment table are provided with mounting shafts, the two ends of the arc-shaped bottom plate are respectively provided with first trepanning matched with the mounting shafts, the first trepanning is fixedly sleeved on the mounting shafts, the two ends of the arc-shaped cover plate are respectively provided with second trepanning matched with the mounting shafts, and the second trepanning is movably sleeved on the mounting shafts.
In one implementation, an installation shaft is arranged at one end of the treatment table, a first sleeve hole matched with the installation shaft is formed at one end of the arc-shaped bottom plate, the first sleeve hole is fixedly sleeved on the installation shaft, a second sleeve hole matched with the installation shaft is formed at one end of the arc-shaped cover plate, and the second sleeve hole is movably sleeved on the installation shaft.
In one implementation, the other end of the arc-shaped cover plate is in sliding connection with the arc-shaped bottom plate.
In one implementation mode, a sliding groove is formed in one end of the arc-shaped bottom plate, a sliding block corresponding to the sliding groove is arranged at one end of the arc-shaped cover plate, and the sliding block is arranged in the sliding groove in a sliding mode.
In one implementation, the thickness of both the arcuate base plate and the arcuate cover plate is no less than 8.7cm.
In one implementation, the gamma knife device further comprises two limiting members, the two limiting members being located on two sides of the treatment couch, respectively.
In one implementation mode, clamping grooves are formed in two sides of the treatment bed, and the limiting piece comprises a plugboard corresponding to the clamping grooves, and the plugboard is clamped in the clamping grooves.
The beneficial effects are that: the radiation protection combination board is arranged on the treatment bed in a covering manner, the radiation protection combination board is connected with the treatment bed to form a radiation protection cabin, so that when the treatment is conducted by an open source, the formed radiation protection cabin can seal and control stray radiation emitted by a treatment window in the radiation protection cabin, medical staff does not need to wear protective clothing additionally, the radiation protection combination board is convenient and practical, and the radiation protection requirement of a machine room can be greatly reduced, and the construction cost and the construction time of the machine room are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without creative effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a gamma knife device with a radiation protection cabin after the radiation protection cabin is opened.
Fig. 2 is a schematic structural diagram of a gamma knife device with a radiation protection cabin after the radiation protection cabin is closed.
Fig. 3 is a schematic structural view of a gamma knife device with a radiation protection cabin provided in the present application, with a radiation protection composite board removed.
Fig. 4 is a schematic structural view of an arc-shaped bottom plate in a gamma knife device with a radiation protection cabin.
Fig. 5 is a schematic structural view of an arc-shaped cover plate in a gamma knife device with a radiation protection cabin.
In the figure: 1. a gamma knife control cabin; 11. a treatment window; 2. a treatment couch; 3. a radiation protection composite board; 31. an arc-shaped bottom plate; 311. a first sleeve hole; 312. a chute; 32. an arc cover plate; 321. a second set of holes; 322. a slide block; 4. a helmet assembly; 41. a support frame; 42. a helmet; 5. a limiting piece; 6. and (5) mounting a shaft.
Detailed Description
The application provides a gamma knife device with a radiation protection cabin, which is used for making the purposes, technical schemes and effects of the application clearer and more definite, and the application is further described in detail below by referring to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The application will be further described by the description of embodiments with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present embodiment provides a gamma knife device with a radiation protection cabin, the gamma knife device includes a gamma knife control cabin 1, a treatment table 2 and a radiation protection combined board 3, a treatment window 11 is opened on one side of the gamma knife control cabin 1, the treatment table 2 is disposed on one side of the gamma knife control cabin 1 located on the treatment window 11 and is connected with the gamma knife control cabin 1, wherein the treatment table 2 is located below the treatment window 11, gamma rays in the gamma knife control cabin 1 will be emitted from the treatment window 11 to the head of a therapist on the treatment table 2, and the radiation protection combined board 3 is disposed above the treatment table 2 and is used for covering the treatment table 2 to form a radiation protection cabin;
according to the embodiment, the radiation protection combination board 3 used for being covered on the treatment bed 2 is arranged, and the radiation protection combination board 3 is connected with the treatment bed 2 to form the radiation protection cabin, so that the formed radiation protection cabin can seal and control stray radiation emitted by the treatment window 11 in the radiation protection cabin during open source treatment, medical staff does not need to wear protective clothing additionally, and the radiation protection cabin is convenient and practical;
in addition, it is worth to say that, in order to achieve the purpose of radiation protection, the existing radiation protection machine room wall body needs to be built by adopting special materials, and the thickness is generally up to 50CM, so that the construction requirement on the machine room is high, the time is long and the cost is high, and the radiation protection cabin of the embodiment seals and controls the stray radiation emitted by the treatment window 11 in the radiation protection cabin, so that the radiation protection requirement of the machine room can be greatly reduced, and the construction cost and the construction time of the machine room are reduced.
Referring to fig. 3, in one embodiment, the gamma knife device further includes a helmet assembly 4, wherein the helmet assembly 4 includes a support frame 41 and a helmet 42, the support frame 41 is disposed on the treatment table 2 at one end of the treatment window 11, the helmet 42 is disposed on the support frame 41, wherein the helmet 42 is at the same height as the treatment window 11, and a plurality of ray holes (not shown) are formed on a side of the helmet 42 near the treatment window 11, and gamma rays in the treatment window 11 are injected into the head of the patient by passing through the ray holes to perform treatment.
Referring to fig. 1 and 3, in one embodiment, the gamma knife device further includes two limiting members 5, and the two limiting members 5 are respectively located at two sides of the therapeutic bed 2, and in this embodiment, by setting the limiting members 5, a therapist can be limited between the two limiting members 5, so as to prevent the therapist from moving randomly and affecting the therapeutic effect.
Specifically, draw-in grooves (not shown in the figure) have been seted up to the both sides of treatment bed 2, locating part 5 include with the picture peg that the draw-in groove corresponds, the picture peg block in the draw-in groove, this embodiment is through setting up the block mode of picture peg and draw-in groove, simple structure, and can install and remove the picture peg fast, convenient and practical to when the therapist is too fat, can also dismantle the picture peg, in order to make things convenient for fat therapist's use. Of course, in order to improve the application scope, a plurality of clamping grooves can be arranged at the same time, so that the clamping position of the plugboard can be changed according to the figure adaptability of a therapist.
In one embodiment, the radiation-proof composite board 3 includes at least two arc-shaped cover boards 32, wherein the thickness of the arc-shaped cover boards 32 is not less than 8.7cm, the two ends of the treatment table 2 are provided with mounting shafts 6, the two ends of the two arc-shaped bottom boards 31 are provided with second sleeve holes 321 corresponding to the mounting shafts 6, the second sleeve holes 321 are rotatably sleeved on the mounting shafts 6, the number of the arc-shaped cover boards 32 can be two, three, four, etc., when the number of the arc-shaped cover boards 32 is two, the two arc-shaped cover boards 32 and the treatment table 2 form a radiation-proof cabin, wherein one side of the formed radiation-proof cabin far away from the treatment window 11 is completely closed, one end of the formed radiation-proof cabin close to the treatment window 11 is in butt joint with the gamma knife control cabin 1, the arc-shaped cover boards 32 are radiation-proof boards composed of a bracket and a lead skin, and the sizes between the two arc-shaped cover boards 32 are not equal;
in the embodiment, by arranging two or more arc-shaped cover plates 32, the arc-shaped cover plates 32 can rotate on the mounting shaft 6 on the treatment couch 2, when a therapist needs to lie on the treatment couch 2, the arc-shaped cover plates 32 can be rotated, and the arc-shaped cover plates 32 are overlapped and expose the space for the therapist to get on the couch; after the therapist gets in bed, the arc cover plates 32 are rotated, so that the treatment bed 2 is covered by the arc cover plates 32 together to form a radiation protection cabin, and the stray radiation emitted by the treatment window 11 in the treatment process is sealed in the radiation protection cabin.
Referring to fig. 1, 2, 3, 4 and 5, in another embodiment, the radiation protection combined board 3 includes an arc bottom board 31 and at least one arc cover board 32 matched with the arc bottom board 31, where the arc bottom board 31 and the arc cover board 32 may be cast iron, the thickness of each of the arc bottom board 31 and the arc cover board 32 is not less than 8.7cm, the arc bottom board 31 is fixedly disposed on the treatment table 2, the arc cover board 32 slides relative to the arc bottom board 31 and covers the treatment table 2 with the arc bottom board 31, where the dimensions of the arc bottom board 31 and the arc cover board 32 are all radiation protection boards, the dimensions of the arc bottom board 31 are greater than those of the arc cover board 32, the arc bottom board 31, the arc cover board 32 and the treatment table 2 form a radiation protection cabin, and one side of the formed radiation protection cabin far from the treatment window 11 is completely closed, and one end of the formed radiation protection cabin near the treatment window 11 is butted with the gamma knife control cabin 1.
In one embodiment, to form a radiation protection compartment with the arched bottom plate 31, the arched cover plate 32 and the treatment couch 2, the embodiment may be: the two ends of the treatment couch 2 are provided with mounting shafts 6, two ends of the arc-shaped bottom plate 31 are respectively provided with a first sleeve hole 311 matched with the mounting shafts 6, the first sleeve holes 311 are fixedly sleeved on the mounting shafts 6, two ends of the arc-shaped cover plate 32 are respectively provided with a second sleeve hole 321 matched with the mounting shafts 6, and the second sleeve holes 321 are movably sleeved on the mounting shafts 6;
this embodiment may also be: one end of the treatment table 2 is provided with a mounting shaft 6, one end of the arc-shaped bottom plate 31 is provided with a first sleeve hole 311 matched with the mounting shaft 6, the first sleeve hole 311 is fixedly sleeved on the mounting shaft 6, one end of the arc-shaped cover plate 32 is provided with a second sleeve hole 321 matched with the mounting shaft 6, the second sleeve hole 321 is rotatably sleeved on the mounting shaft 6, and the other end of the arc-shaped cover plate 32 is slidably connected with the arc-shaped bottom plate 31, and refer to fig. 1.
The other end of the arc cover plate 32 is slidably connected with the arc bottom plate 31 in the following manner: a sliding groove 312 is formed in one end of the arc-shaped bottom plate 31, a sliding block 322 corresponding to the sliding groove is arranged on one end of the arc-shaped cover plate 32, and the sliding block 322 is arranged in the sliding groove 312 in a sliding manner; it should be noted that, when the number of the arc-shaped cover plates 32 is more than two, both the sliding blocks 322 and the sliding grooves 312 are disposed on the arc-shaped cover plates 32.
In one embodiment, in order to facilitate the operation of the arc-shaped cover plate 32, at least one operating member (not shown in the figure) is further disposed on the arc-shaped cover plate 32, where the operating member is a handle, and the handle is provided with an anti-slip thread.
In summary, the present application provides a gamma knife device with a radiation protection cabin, the gamma knife device includes a gamma knife control cabin 1, a treatment table 2 and a radiation protection combination board 3, a treatment window 11 is formed on one side of the gamma knife control cabin 1, the treatment table 2 is disposed on one side of the gamma knife control cabin 1, and is connected with the gamma knife control cabin 1, wherein the treatment table 2 is disposed below the treatment window 11, gamma rays in the gamma knife control cabin 1 will be emitted from the treatment window 11 to the head of a therapist on the treatment table 2, and the radiation protection combination board 3 is disposed above the treatment table 2 and is used for covering the treatment table 2 to form the radiation protection cabin; this application is used for the cover to establish radiation protection composition board 3 on the treatment couch 2, and makes radiation protection composition board 3 with the treatment couch 2 is connected and is formed the radiation protection cabin, and when the open source treatment like this, the stray radiation that forms of radiation protection cabin just can be with the treatment window 11 effluvium seals the accuse in the radiation protection cabin, need not medical personnel and wears protective clothing utensil additional again, convenient and practical, and can also alleviate the radiation protection demand of computer lab widely, thereby reduce the construction cost and the construction time of computer lab.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A gamma knife device having a radiation protection compartment, comprising:
a gamma knife control cabin, one side of which is provided with a treatment window;
the treatment bed is arranged on one side of the gamma knife control cabin and is connected with the gamma knife control cabin, wherein the treatment bed is positioned below the treatment window;
the radiation protection combined plate is arranged above the treatment bed and is used for covering the treatment bed to form a radiation protection cabin so as to seal stray radiation emitted by the treatment window in the radiation protection cabin.
2. The gamma knife device with the radiation protection cabin according to claim 1, wherein the radiation protection composition board comprises an arc-shaped bottom board and at least one arc-shaped cover board matched with the arc-shaped bottom board, the arc-shaped bottom board is fixedly arranged on the treatment bed, the arc-shaped cover board slides relative to the arc-shaped bottom board and covers the treatment bed with the arc-shaped bottom board, and the arc-shaped bottom board and the arc-shaped cover board are radiation protection boards.
3. The gamma knife device with the radiation protection cabin according to claim 1, wherein the radiation protection composition board comprises at least two arc-shaped cover boards, mounting shafts are arranged at two ends of the treatment bed, two ends of the arc-shaped cover boards are respectively and rotatably arranged on the mounting shafts, and the arc-shaped cover boards are radiation protection boards.
4. The gamma knife device with the radiation protection cabin according to claim 2, wherein the two ends of the treatment bed are provided with mounting shafts, the two ends of the arc-shaped bottom plate are respectively provided with first sleeve holes matched with the mounting shafts, the first sleeve holes are fixedly sleeved on the mounting shafts, the two ends of the arc-shaped cover plate are respectively provided with second sleeve holes matched with the mounting shafts, and the second sleeve holes are movably sleeved on the mounting shafts.
5. The gamma knife device with the radiation protection cabin according to claim 2, wherein an installation shaft is arranged at one end of the treatment bed, a first sleeve hole matched with the installation shaft is formed at one end of the arc-shaped bottom plate, the first sleeve hole is fixedly sleeved on the installation shaft, a second sleeve hole matched with the installation shaft is formed at one end of the arc-shaped cover plate, and the second sleeve hole is movably sleeved on the installation shaft.
6. The gamma knife device with radiation proof capsule of claim 5 wherein the other end of the arc cover plate is slidably connected to the arc bottom plate.
7. The gamma knife device with the radiation protection cabin according to claim 2, wherein a chute is formed at one end of the arc-shaped bottom plate, a sliding block corresponding to the chute is arranged at one end of the arc-shaped cover plate, and the sliding block is slidably arranged in the chute.
8. The gamma knife device with radiation protection capsule of claim 2, wherein the thickness of both the arcuate base plate and the arcuate cover plate is not less than 8.7cm.
9. The gamma knife device with radiation protection capsule of claim 1, further comprising two limiting members, two of the limiting members being positioned on either side of the treatment couch.
10. The gamma knife device with the radiation protection cabin of claim 9, wherein the clamping grooves are formed in two sides of the treatment bed, the limiting piece comprises a plugboard corresponding to the clamping grooves, and the plugboard is clamped in the clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320925223.3U CN220608887U (en) | 2023-04-20 | 2023-04-20 | Gamma knife equipment with radiation protection cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320925223.3U CN220608887U (en) | 2023-04-20 | 2023-04-20 | Gamma knife equipment with radiation protection cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220608887U true CN220608887U (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320925223.3U Active CN220608887U (en) | 2023-04-20 | 2023-04-20 | Gamma knife equipment with radiation protection cabin |
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| Country | Link |
|---|---|
| CN (1) | CN220608887U (en) |
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2023
- 2023-04-20 CN CN202320925223.3U patent/CN220608887U/en active Active
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