CN2258386Y - Two-phase non-equidistance centre focus and shielding device for spiral end photon cutter - Google Patents
Two-phase non-equidistance centre focus and shielding device for spiral end photon cutter Download PDFInfo
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- CN2258386Y CN2258386Y CN 96241937 CN96241937U CN2258386Y CN 2258386 Y CN2258386 Y CN 2258386Y CN 96241937 CN96241937 CN 96241937 CN 96241937 U CN96241937 U CN 96241937U CN 2258386 Y CN2258386 Y CN 2258386Y
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- shielding
- helmet
- source body
- collimator
- collimation
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Abstract
The utility model relates to a two-phase non-equidistant centre focus and shielding device for a spiral photon cutter for heads. A hollow cylindric radioactive source body, a middle collimation or shielding conversion body, a rotary helmet, a shielding cover and a moving shielding block are orderly arranged in a hollow cylindric body of an external shielding body of the utility model, wherein, the shielding cover and the moving shielding block are arranged in the helmet. A plurality of axially penetrative through holes pointing to a focus point are arranged on the radioactive source body, the middle collimation or shielding conversion body and the cylindric face of the helmet, and each hole arranged in a certain regulation divides circumference into equal parts. A radioactive resource, a pre-collimator, a middle collimator or shielding device and an external collimator are respectively arranged in the holes. The utility model not only can treat the heads, but can treat bodies, and has the advantages of convenient operation, high safety, reliability, etc.
Description
This utility model relates to the radiating medical apparatus, refers to a kind of non-equidistant centre focus of two-phase and screening arrangement of spiral head photon cutter especially.
Medical nuclear physics therapy equipment radiotherapy theatment machine is equipped with a plurality of radioactive sources, and its ray focuses on a bit with static state or dynamical fashion by passage, existing radiotherapy theatment machine, and what have can only treat human body head, and the human body of can only treating that has drives body.In addition, no matter static or dynamic unidirectional rotation or two-way rotating focus radiation mode, as the radioactivity armarium, its safety and reliability are that can product be used for clinical decisive indicator, also are the first elements of product quality.Existing static and dynamic radiation focuses on and shielding mode, the complex structure that has, be difficult for processing, complicated operation, what have does not have an intershield, patient treats the irradiation that the space is subjected to lonizing radiation immediately once entering, cause unnecessary harm, though have be provided with intershield owing to adopt the electronic component gauge tap, electronic component lost efficacy under the intense radiation effect easily, and these all bring unsafe factor to treatment.
The purpose of this utility model provide a kind of improvement that is used for spiral head photon cutter non-equidistant centre focus of two-phase and screening arrangement, be used for the treatment of head, and mechanically operated intershield be set, make it safer, reliable.
The purpose of this utility model is achieved through the following technical solutions:
The non-equidistant center of the two-phase of a kind of spiral head photon cutter of the present utility model collimation focuses on and screening arrangement, is made up of external shielding body, source body, collimation/shielding conversion body, the helmet and helmet inner shield, portable shielding piece:
A. source body, collimation/shielding conversion body, the helmet, radome are the concentric hollow cylinder of sleeve shaped, the axial line of each hollow cylinder overlaps, the external cylindrical surface of source body cooperates with the inner cylinder face of external shielding body, and its mating surface two ends have bearing to be supported to be rotationally connected and axial restraint; The external cylindrical surface of collimation/shielding conversion body cooperates with the inner cylinder face of source body, and its mating surface two ends have bearing to be supported to be rotationally connected and axial restraint; The external cylindrical surface of the helmet and collimation/shielding are changed the inner cylinder face of turning for rotating/be slidingly matched, and its end face is connected with lathe bed and has bearing supporting, this bearing to make helmet lathe bed rotation and move with lathe bed relatively; The end face of the helmet has the groove on the linking arm of contiguous block and source body end face to become convex-concave to be connected, and when the helmet moved axially with lathe bed, this contiguous block entered the groove of source body linking arm and the helmet and source body are circumferentially linked into an integrated entity, and the two does to rotate synchronously;
In the helmet, be close to hole wall in the cylindrical hole plexiglass tent is housed, inner surface at this bell glass is provided with some shielding slabs, be used to shield the sensitive part of optic nerve and cranial nerve, this shielding slab is made up of outer Magnet and internal layer tungsten alloy, and described Magnet layer is adsorbed on iron plate that plexiglass tent inlays and goes up and obtain the fixing of adjustable position;
B. at the source body, collimation/shielding conversion body, be provided with some axial lines by certain rule on the circumference cylinder of the helmet and overlap the through hole that runs through, each axial line of organizing through hole becomes different angle with the axial line of hollow cylinder, but it is focus point that the axes extending line of respectively organizing through hole all intersects at a bit, and this focus point is positioned at the appropriate position of close end face on the hollow cylinder axial line, in the ladder hole of source body, in its big stomidium the radioactive source body is housed, in its small end through hole precollimator is housed; The through hole of collimation/shielding conversion body is many than the through hole of source body, and intermediate collimator and intershield device are housed respectively in it; The number of openings of the helmet be the source body number of openings 1-5 doubly, outer collimator is housed in it, in each outer collimator port hole, bigger with the aperture of the most inboard outlet opening of focus center wire clamp angle minimum, outwards respectively discharge the oral pore aperture and successively decrease gradually, thereby guarantee the projected size unanimity of each collimator ray focusing; In each collimator holes to timing, the lonizing radiation directive focus of source body, the distance of the radiation beam of each collimator holes from source point to focus does not wait;
C. fuselage is provided with mechanical driving device, and this machinery is transmission power source body and collimation/shielding conversion body relatively rotates or rotate synchronously respectively.
In preferred embodiment, described source body, collimation/shielding conversion body, be used to install the radioactive source body on the circumference cylinder of the helmet, the distribution rule of the through hole of collimator and shielding device, be with by focus and with the vertical plane of hollow cylinder centrage be datum plane, from the cylinder between 3 °～48 ° of the datum planes, be distributed with some groups (for example 10 groups), every group of through hole that runs through that several (for example 6) deads in line are arranged, but each is organized the through-bore axis equidistant parallel and arranges, delegation successively also can raise, and each hole is pressed circumference in equal parts and is arranged, the source body is identical with the number of openings of every group of the helmet, the number of openings that collimation/shielding conversion body is every group is source body and helmet number of openings two or four times, has three rows to be used to place the different intermediate collimator in aperture in four exhausting holes that collimation/shielding conversion body is every group, and a row is used to place the intershield device.
This utility model has following positive beneficial effect:
1. realized radiotherapy with the non-equidistant centre focus of two-phase to human body head.
2. strengthened the treatment space of the helmet.
3. enter the treatment space and not during begin treatment, middle collimation/shielding conversion body is in masked state, can stop that lonizing radiation cause unnecessary harm to patient patient.
4. realize shielding with mechanical system, realize that than electricity consumption prosecutor formula shielding is safer, more reliable.Whole device can be done two-way rotation, and the two-way anglec of rotation can be adjusted arbitrarily, make up.
5. use the rotary helmet, can arbitrarily change the collimator in certain aperture.Simultaneously, the rotary helmet is the parts that are used for the treatment of that combine as a whole with complete machine, can become the supplemental measurement tool when measuring single radioactive source again separately.
6. can measure the dosage of single radioactive source easily, for treatment plan provides primary data accurately.When measuring single radioactive source, available solid tungsten alloy bar is blocked the passage that other need not measure ray, makes the required data of dose plan curve more accurate.
7. increased Ф 2 collimators, when the focus of treatment header functionality disease, more accurate, safety.
8. process fairly simple, easy.
9. cost is lower, make present fetch long price, can only be the large-scale radiological installation that small number of patients is used, can become price lower, extensive patients all makes the conventional planning armarium of affording to use, and bring benefit to the mankind.
10. can realize two-way rotation, remove slide block and other electronic components of being used in the former helmet to power and transmitting information, make structure simpler, safety and reliability.
Now in conjunction with the accompanying drawings with preferred embodiment:
Fig. 1 is the profile sketch map of medical spiral head photon cutter;
Fig. 2 be this utility model embodiment face the complete section sketch map;
Fig. 3 is the right side view of Fig. 2;
Fig. 4 is the structural representation of helmet part among Fig. 1;
Fig. 5 is the right side view of Fig. 4;
Fig. 6 is the structure fragmentary detail view of radioactive source and collimator, is collimation position;
The same Fig. 6 of Fig. 7 is screening-off position;
Fig. 8 is the plane outspread drawing of a kind of embodiment that collimator holes is arranged on source body and the helmet open circles cylinder;
Fig. 9 be with Fig. 8 corresponding in the middle of the not face expansion sketch map of the arrangement of collimating aperture, shield opening on the collimation/shielding conversion body open circles cylinder.
The same Fig. 9 of Figure 10 is another embodiment.
Fig. 1 shows the profile signal of medical spiral head photon cutter, movably lathe bed 2 is arranged on machine Cuo 21, its radioactive source body is loaded in the ten days shield, be loaded on together on the framework 3 of support, rotate by machine driving, this utility model only relates to the focusing and the screening arrangement of this photon cutter, is an ingredient of complete machine, now only relative section is described:
Non-equidistant centre focus of the two-phase of spiral head photon cutter of the present utility model and screening arrangement, by external shielding body 4, source body 5, collimation/shielding conversion body 6, the helmet 7 and helmet inner shield 9, portable shielding piece 15,15 ', 16 form and see Fig. 2 Fig. 3:
With reference to Fig. 4 Fig. 5, in the helmet 7, be close to hole wall in the cylindrical hole organic glass radome 9 is housed, the inner surface of this glass radome be provided with shielding slab 15,15 ', following shielding slab 16, be respectively applied for the sensitive part of shielding optic nerve cranial nerve, this shielding slab is made up of outer Magnet and internal layer tungsten alloy, and described Magnet layer is adsorbed on iron plate that plexiglass tent inlays and goes up and obtain the fixing of adjustable position.
Referring to Fig. 2, Fig. 6, Fig. 7, at source body 5, collimation/shielding conversion body 6, be provided with some axial lines on the circumference cylinder of the helmet 7 according to certain rules and overlap the through hole that runs through, each organizes 8 one-tenth different angle of axial line of axial line with the hollow cylinder of through hole, but it is focus point 18 that the axes extending line of respectively organizing through hole all intersects at a bit, this focus point 18 is positioned at the appropriate position of hollow cylinder axial line 8, in the ladder hole of source body 5, in its big stomidium radioactive source body 19 is housed, in its small end through hole precollimator 20 is housed; The through hole of collimation/shielding conversion body 6 is many than the through hole of source body 5, and intermediate collimator 21 and intershield device 22 are housed respectively in it; The through hole of the helmet 7 is identical with the number of openings of source body 5, outer collimator 23 is housed in it, in each outer collimator port hole, bigger with the aperture of the most inboard outlet opening of focus center wire clamp angle minimum, outwards respectively discharge the oral pore aperture and successively decrease gradually, thereby guarantee the projected size one of each collimator ray focusing; To timing, the lonizing radiation directive focus 18 of source body 5 realizes focusing in each collimator holes, and the distance of the radiation beam of each collimator holes from source point to focus does not wait;
Fig. 6 shows source body 5, middle collimation/shielding conversion body 6, the helmet 7 is respectively with precollimator 20, intermediate collimator 21,23 pairs of timings of outer collimator, the lonizing radiation of radioactive source 19 pass from collimator, and directive focus 18 realizes the sketch map of focusing, described outer collimator 23 is the taper hole of outlet for big end, thereby forms a small size at focus 18 places.
Collimation/shielding conversion body 6 was carried out shielding with the lonizing radiation of the radioactive source 19 of 22 pairs of source bodies 5 of intershield device in the middle of Fig. 7 showed, this moment, focus point 18 no radiations arrived.
In preferred embodiment, described source body 5, collimation/shielding conversion body 6, be used to install radioactive source body 19 on the circumference cylinder of the helmet 7, collimator 20,21,23 and the distribution rule of through hole of shielding device 22, be with by focus 18 and with hollow cylinder centrage 8 vertical planes be datum plane 24, from the cylinder between 24 3 °～48 ° of the datum planes, be distributed with some groups of (10 groups of I for example, II, III ...), every group of through hole that runs through 25 that several (for example 6) deads in line are arranged, but each is organized the through-bore axis equidistant parallel and arranges, delegation successively also can raise, and each hole is pressed circumference in equal parts and is arranged, the number of openings of the source body 5 and 7 every groups of the helmets is identical sees Fig. 8, the number of openings that collimation/shielding conversion body is 6 every groups is that two times of (see figure 10)s of source body 5 or the helmet 7 number of openings or four times are seen Fig. 9, there are three rows (to number 26 among the figure in four exhausting holes that collimation/shielding conversion body is every group, 27,29) be used to place the different intermediate collimator in aperture, one row's (numbering 28 among the figure, the hole of blacking) is used to place the intershield device.
In preferred embodiment, the focal spot size specification of described helmet collimator is Ф 2, Ф 4, Ф 8, Ф 14, Ф 18 5 covers, sees the following form in its corresponding outer collimator 23 corresponding apertures that are installed in the helmet:
| Focal spot size | The small end aperture | Big |
| Φ | ||
| 2 | Φ 1.0 | Φ 1.5 |
| | Φ 2.0 | Φ 2.5 |
| | Φ 3.6 | Φ 5.0 |
| | Φ 5.0 | Φ 6.0 |
| | Φ 6.0 | Φ 10.0 |
The focal spot size specification of described whole body collimator is Φ 8, Φ 18, Φ 36 3 covers, and the focal spot size of Φ 8～Φ 60 also can be arranged.
Claims (4)
1. non-equidistant centre focus of the two-phase of a spiral head photon cutter and screening arrangement are made up of external shielding body, source body, collimation/shielding conversion body, the helmet and helmet inner shield, portable shielding piece, it is characterized in that:
A. source body, collimation/shielding conversion body, helmet radome are the concentric hollow cylinder of sleeve shaped, the axial line of each hollow cylinder overlaps, the external cylindrical surface of source body cooperates with the inner cylinder face of external shielding body, and its mating surface two ends have bearing to be supported to be rotationally connected and axial restraint; The external cylindrical surface of collimation/shielding conversion body cooperates with the inner cylinder face of source body, and its mating surface two ends have bearing to be supported to be rotationally connected and axial restraint; The external cylindrical surface of the helmet and collimation/shielding are changed the inner cylinder face of turning for rotating/be slidingly matched, and its end face is connected with lathe bed and has bearing supporting, this bearing to make helmet lathe bed rotation and move with lathe bed relatively; The end face of the helmet has the groove on the linking arm of contiguous block and source body end face to become convex-concave to be connected, and when the helmet moved axially with lathe bed, this contiguous block entered the groove of source body linking arm and the helmet and source body are circumferentially linked into an integrated entity, and the two does to rotate synchronously;
In the helmet, be close to hole wall in the cylindrical hole plexiglass tent is housed, inner surface at this bell glass is provided with some shielding slabs, be used to shield the sensitive part of optic nerve and cranial nerve, this shielding slab is made up of outer Magnet and internal layer tungsten alloy, and described Magnet layer is adsorbed on iron plate that plexiglass tent inlays and goes up and obtain the fixing of adjustable position;
B. at the source body, collimation/shielding conversion body, be provided with some axial lines by certain rule on the circumference cylinder of the helmet and overlap the through hole that runs through, the axial line of each through hole becomes different angle with the axial line of hollow cylinder, but it is focus point that the axes extending line of each through hole all intersects at a bit, and this focus point is positioned at the appropriate position of hollow cylinder axial line, and each is in the ladder hole of source body, in its big stomidium the radioactive source body is housed, in its small end through hole precollimator is housed; The through hole of collimation/shielding conversion body is many than the through hole of source body, and intermediate collimator and intershield device are housed respectively in it; The number of openings of the helmet be the source body number of openings 1-5 doubly, outer collimator is housed in it, in each outer collimator port hole, bigger with the aperture of the most inboard outlet opening of focus center wire clamp angle minimum, outwards respectively discharge the oral pore aperture and successively decrease gradually, thereby guarantee the projected size unanimity of each collimator ray focusing; In each collimator holes to timing, the lonizing radiation directive focus of source body, the distance of the radiation beam of each collimator holes from source point to focus does not wait;
C. fuselage is provided with mechanical driving device, and this machinery is transmission power source body and collimation/shielding conversion body relatively rotates or rotate synchronously respectively.
2. non-equidistant centre focus of the two-phase of spiral head photon cutter according to claim 1 and screening arrangement, it is characterized in that: described source body, collimation/shielding conversion body, be used to install the radioactive source body on the circumference cylinder of the helmet, the distribution rule of the through hole of collimator and shielding device, be with by focus and with the vertical plane of hollow cylinder centrage be datum plane, from the cylinder between 3 °～48 ° of the datum planes, be distributed with some groups, for example 10 groups, every group has several for example through holes that runs through of 6 deads in line, but each is organized the through-bore axis equidistant parallel and arranges, delegation successively also can raise, and each hole is pressed circumference in equal parts and is arranged, and the source body is identical with the number of openings of every group of the helmet, and the number of openings that collimation/shielding conversion body is every group is source body and helmet number of openings two or four times, have three rows to be used to place the different intermediate collimator in aperture in four exhausting holes that collimation/shielding conversion body is every group, a row is used to place the intershield device.
3. non-equidistant centre focus of the two-phase of spiral head photon cutter according to claim 1 and screening arrangement is characterized in that: the focal spot size specification of described helmet collimator is Ф 2, Ф 4, Ф 8, Ф 14, Ф 18 5 covers.
4. non-equidistant centre focus of the two-phase of spiral head photon cutter according to claim 1 and screening arrangement is characterized in that: the focal spot size specification of described whole body collimator is Ф 8, Ф 18, Ф 36 3 covers.The focal spot size that size Ф 8-Ф 60 also can be arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241937 CN2258386Y (en) | 1996-11-25 | 1996-11-25 | Two-phase non-equidistance centre focus and shielding device for spiral end photon cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241937 CN2258386Y (en) | 1996-11-25 | 1996-11-25 | Two-phase non-equidistance centre focus and shielding device for spiral end photon cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2258386Y true CN2258386Y (en) | 1997-07-30 |
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ID=33916229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96241937 Expired - Lifetime CN2258386Y (en) | 1996-11-25 | 1996-11-25 | Two-phase non-equidistance centre focus and shielding device for spiral end photon cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2258386Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093451A (en) * | 2012-02-08 | 2014-10-08 | 卡尔蔡司医疗技术股份公司 | Flexible applicator for radiation therapy |
| CN104795121A (en) * | 2014-01-22 | 2015-07-22 | 上海联影医疗科技有限公司 | Split type primary collimator |
-
1996
- 1996-11-25 CN CN 96241937 patent/CN2258386Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093451A (en) * | 2012-02-08 | 2014-10-08 | 卡尔蔡司医疗技术股份公司 | Flexible applicator for radiation therapy |
| CN104093451B (en) * | 2012-02-08 | 2017-07-28 | 卡尔蔡司医疗技术股份公司 | Bent applicating device for radiotherapy |
| CN104795121A (en) * | 2014-01-22 | 2015-07-22 | 上海联影医疗科技有限公司 | Split type primary collimator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN MAXIPU MEDICINE SCIENCE DEVELOPMENT CO., Free format text: FORMER NAME OR ADDRESS: ZHENG TIE |
|
| CP03 | Change of name, title or address |
Address after: 518010 New County Hotel, Huaqiang North Road, room 909, Shenzhen, Futian District Patentee after: Shenzhen MASEP Medical Technology Development Co., Ltd. Address before: 518010 Shenzhen Luohu District Louden village room 5-302 Patentee before: Zheng Tie |
|
| C56 | Change in the name or address of the patentee |
Owner name: MECIP MEDICAL TECHNOLOGY DEVELOPMENT (SHENZHEN) CO Free format text: FORMER NAME OR ADDRESS: SHENZHEN MAXIPU MEDICINE SCIENCE DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518010 New County Hotel Shenzhen Futian District 1113-1114 1116-1124 Patentee after: Masep Medical Science & Technology Development (Shenzhen) Co., Ltd. Address before: 518010 New County Hotel, Huaqiang North Road, room 909, Shenzhen, Futian District Patentee before: Shenzhen MASEP Medical Technology Development Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |