CN202677860U - Novel cobalt-60 gamma source for after-loading therapy - Google Patents
Novel cobalt-60 gamma source for after-loading therapy Download PDFInfo
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- CN202677860U CN202677860U CN 201220299408 CN201220299408U CN202677860U CN 202677860 U CN202677860 U CN 202677860U CN 201220299408 CN201220299408 CN 201220299408 CN 201220299408 U CN201220299408 U CN 201220299408U CN 202677860 U CN202677860 U CN 202677860U
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Abstract
The utility model discloses a novel cobalt-60 gamma source for after-loading therapy. The novel cobalt-60 gamma source comprises an envelope, a sealing plug and a source core, wherein the source core is nickel cobalt-60 plated particles and is arranged in the envelope; and the sealing plug is arranged in an opening of the envelope and is connected with the envelope in a sealed manner. The utility model adopts a structure in which cobalt-60 particles with gamma radioactivity are filled in the stainless steel envelope directly to prepare the cobalt-60 gamma source for after-loading therapy, and is independent of direct irradiation of a reactor in a later stage, thus the cobalt-60 gamma source for after-loading therapy is simple and fast in production, and the production period is relatively short, the radioactive source activity is proper, so that requirements of a patient can be met; and the cobalt-60 particles in a waste cobalt radioactive source can be recycled, so that the production cost is reduced.
Description
Technical field
The utility model relates to a kind of after-loading therapy with cobalt-60 γ source, relates in particular to a kind of novel after-loading therapy that does not rely on the direct irradiation of reactor and uses cobalt-60 γ source.
Background technology
After-loading therapy is radiocurable a kind of method.Dress is exactly first radiocurable applicating device placement to be planted suitable position in place or executing source cushion after the what is called, then film making is confirmed, through the treatment planning systems calculated dose distribution, obtain restart switch behind the satisfactory result, radioactive source delivered to automatically carry out radiocurable method in applicating device or the pin, so be afterloading radiotherapy.After-loading therapy belongs to brachytherapy, is for remote radiotherapy is external exposure.It is short that it has the treatment distance, and source week local dose is very high, the characteristics that peripheral dosage falls rapidly, thereby can improve the tumor by local exposure dose, effectively protect peripheral normal structure and vitals, and the function of therapentic part keeps also good than Radiotherapy.Because radioactive source was put into automatically by machine afterwards, staff's compartment operates, and has avoided staff's radiation insult.
After-loading therapy divides by clinical practice, comprises in the chamber, manages interior, tissue space implantation, and the mid-pipe of art and model are applied ointment or plaster five types.Wherein most widely used is intracavitary radiotherapy, namely utilizes human body natural's cavity and pipeline such as nasopharynx, oesophagus, tracheae, rectum, vagina and uterine neck etc. to put treatment tube, then treats by corresponding steps.It can treat nasopharyngeal carcinoma, the cancer of the esophagus, tracheocarcinoma, bronchiolar carcinoma, the carcinoma of the rectum, cervical carcinoma etc.The after-loading therapy of this paper introduction is only applicable to intracavitary radiotherapy with cobalt-60 γ source.
The preparation method who is used at present the cobalt-60 γ source of intracavitary radiotherapy is to be the cobalt-59 titanium involucrum of packing into cold cobalt silk, welded seal, then making target spare puts into reactor and carries out irradiation, cobalt-59 absorbs neutron to be changed into and has radioactive cobalt-60 and namely launch gamma-rays, and through behind the irradiation of planned time, target spare goes out heap, Cutting and Dismantling, taking out cobalt-60 γ source, measure activity, leakage and pollute check and stepping is deposited, packs into behind the pigtail of source for treating in qualified source.Involucrum by the cobalt-60 γ source of above-mentioned classic method preparation is titanium, belongs to rare noble metal, and cost is higher.
Because present domestic reactor self irradiation task is heavier, can not guarantee to provide target spare irradiation channel, other target spare complex manufacturing technology, the impact of the factors such as radioactive source titanium involucrum welding quality is unstable, seriously restricted the production supply of material of intracavitary radiotherapy with cobalt-60 afterloading source, patient usually needs can be effectively treated through waiting as long for, causes the part patient to miss best occasion for the treatment and increase the weight of the state of an illness.
Also do not occur in patent documentation and non-patent literature about other preparation method and the product of after-loading therapy with cobalt-60 γ source at present, be not different from the preparation method of above-mentioned traditional structure and the after-loading therapy of product yet and openly used with cobalt-60 γ source.
The utility model content
The purpose of this utility model just is that providing a kind of in order to address the above problem does not rely on the direct irradiation of reactor and prepare fireballing novel after-loading therapy usefulness cobalt-60 γ source.
In order to achieve the above object, the utility model has adopted following technical scheme:
The utility model comprises involucrum, sealing-plug and source core, and described source core is nickel plating cobalt-60 particle, and described source core places in the described involucrum, and described sealing-plug is installed in the opening of described involucrum and with described involucrum and is tightly connected.
The titanium involucrum size in the size of involucrum described in the utility model and traditional cobalt-60 γ source is different, be satisfy radioactive source can with the prerequisite of domestic after-loading therapy equipment coupling under, take into full account welding process requirement, guarantee to obtain to greatest extent and determined after the technical requirements such as high-quality welded seal quality.Owing in the stainless steel cladding of directly nickel plating cobalt-60 particle being packed into, so the later stage is no longer carried out reactor irradiation, also just needn't use the titanium involucrum, involucrum and product cost are reduced.
As preferably, the purity of described nickel plating cobalt-60 particle is greater than 99%, and radioactivity is 18.5GBq～92.5GBq; The best is 31.4GBq.
Particularly, described involucrum is stainless steel cladding, and described sealing-plug is the stainless steel sealing-plug; Adopt argon arc welding between described involucrum and the described sealing-plug.
The beneficial effects of the utility model are:
The utility model adopts directly to load in stainless steel cladding has the structure that gamma active cobalt-60 particle prepares after-loading therapy usefulness cobalt-60 γ source, later stage does not rely on the direct irradiation of reactor, so making is simple, speed is fast, production cycle is shorter, radioactive source activity is suitable, can satisfy patients ' demand; And can utilize cobalt-60 particle that reclaims in waste and old cobalt-60 radioactive source, reduced production cost.
Description of drawings
Accompanying drawing is the cut-open view that novel after-loading therapy described in the utility model is used cobalt-60 γ source.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described in detail:
As shown in drawings, the utility model comprises stainless steel cladding 1, stainless steel sealing-plug 2 and source core 3, source core 3 for purity greater than 99%, radioactivity is nickel plating cobalt-60 particle of 31.4GBq, source core 3 places in the stainless steel cladding 1, stainless steel sealing-plug 2 be installed in the opening of stainless steel cladding 1 and with stainless steel cladding 1 between adopt argon arc welding to be connected.
By reference to the accompanying drawings, preparation method of the present utility model may further comprise the steps:
(1) presses design drawing processing stainless steel involucrum and stainless steel sealing-plug, clean with acetone, except drying for standby behind degreasing and the oxide;
(2) measure single purity greater than the radioactivity of 99% nickel plating cobalt-60 particle, choose nickel plating cobalt-60 particle of radioactivity scope between 1 8.5GBq～46.2GBq, for subsequent use with drying after the washed with de-ionized water;
(3) nickel plating cobalt-60 particle the chosen opening by stainless steel cladding is filled in the stainless steel cladding, again the stainless steel sealing-plug is installed in the opening of stainless steel cladding, and seals by argon arc welding;
(4) carry out radioactive contamination, leakage, activity measurement check, namely get novel after-loading therapy after qualified with cobalt-60 γ source.
Claims (5)
1. a novel after-loading therapy is used cobalt-60 γ source, it is characterized in that: comprise involucrum, sealing-plug and source core, described source core is nickel plating cobalt-60 particle, and described source core places in the described involucrum, and described sealing-plug is installed in the opening of described involucrum and with described involucrum and is tightly connected.
2. novel after-loading therapy according to claim 1 is used cobalt-60 γ source, and it is characterized in that: the purity of described nickel plating cobalt-60 particle is greater than 99%, and radioactivity is 18.5GBq～92.5GBq.
3. novel after-loading therapy according to claim 2 is used cobalt-60 γ source, and it is characterized in that: the radioactivity of described nickel plating cobalt-60 particle is 31.4GBq.
4. novel after-loading therapy according to claim 1 is used cobalt-60 γ source, and it is characterized in that: described involucrum is stainless steel cladding, and described sealing-plug is the stainless steel sealing-plug.
According to claim 1 or 4 described novel after-loading therapies with cobalt-60 γ sources, it is characterized in that: adopt argon arc welding between described involucrum and the described sealing-plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299408 CN202677860U (en) | 2012-06-26 | 2012-06-26 | Novel cobalt-60 gamma source for after-loading therapy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299408 CN202677860U (en) | 2012-06-26 | 2012-06-26 | Novel cobalt-60 gamma source for after-loading therapy |
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| Publication Number | Publication Date |
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| CN202677860U true CN202677860U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220299408 Expired - Lifetime CN202677860U (en) | 2012-06-26 | 2012-06-26 | Novel cobalt-60 gamma source for after-loading therapy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723118A (en) * | 2012-06-26 | 2012-10-10 | 成都中核高通同位素股份有限公司 | Novel cobalt-60gamma source for after-loading therapy and manufacturing method thereof |
| CN108538423A (en) * | 2017-12-20 | 2018-09-14 | 南京喜悦科技股份有限公司 | A kind of irradiation devices using Co 60 radiated by gamma-ray |
| CN111477375A (en) * | 2020-04-29 | 2020-07-31 | 山东泉港辐射科技发展有限公司 | Source plate frame |
-
2012
- 2012-06-26 CN CN 201220299408 patent/CN202677860U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723118A (en) * | 2012-06-26 | 2012-10-10 | 成都中核高通同位素股份有限公司 | Novel cobalt-60gamma source for after-loading therapy and manufacturing method thereof |
| CN108538423A (en) * | 2017-12-20 | 2018-09-14 | 南京喜悦科技股份有限公司 | A kind of irradiation devices using Co 60 radiated by gamma-ray |
| CN108538423B (en) * | 2017-12-20 | 2020-04-10 | 南京喜悦科技股份有限公司 | Irradiation device adopting cobalt 60 gamma ray irradiation |
| CN111477375A (en) * | 2020-04-29 | 2020-07-31 | 山东泉港辐射科技发展有限公司 | Source plate frame |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
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| CX01 | Expiry of patent term |