CN103845789B - The apparatus for wave-energy source of anal-rectal tumor radiotherapy - Google Patents
The apparatus for wave-energy source of anal-rectal tumor radiotherapy Download PDFInfo
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- CN103845789B CN103845789B CN201410099697.2A CN201410099697A CN103845789B CN 103845789 B CN103845789 B CN 103845789B CN 201410099697 A CN201410099697 A CN 201410099697A CN 103845789 B CN103845789 B CN 103845789B
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Abstract
A kind of apparatus for wave-energy source of anal-rectal tumor radiotherapy, comprise the cylindrical apparatus for wave-energy source body that diameter is 3cm, the front end of described apparatus for wave-energy source body is spherical arc, the leading portion of apparatus for wave-energy source body is the right cylinder section of length 8.5cm, this right cylinder section comprises the spherical arc of front end, the back segment of apparatus for wave-energy source body is 150 degree of arc-shaped bends, the inflection arc length of this curved bend tune is 5cm, axially three supply radiator ducts are provided with in apparatus for wave-energy source body, described three supply radiator duct arranged off-centre are the distribution in circular curve in the semicircle of apparatus for wave-energy source body cross-section inflection side, the distance of the inflection side outer wall of the centre-to-centre spacing apparatus for wave-energy source body of every root supply radiator duct is 5.5mm, wherein the first supply radiator duct and the second supply radiator duct, circular arc between second supply radiator duct with the 3rd supply radiator duct center of circle is equal, central angle corresponding to this circular arc is 60 degree.Its focus spread outside anus edge for part cancer of anal canal, also can have good radiotherapeutic effect, reduce the probability of tumor recurrence, be conducive to the radical cure of tumor.
Description
Technical field
The present invention relates to cancer of anal canal treatment field, the apparatus for wave-energy source of particularly a kind of anal-rectal tumor radiotherapy.
Background technology
Plesioradiotherapy, it is radiocurable a kind of form, radioactive source can be positioned over exactly within malignant tumor or near, high-energy ray is utilized to kill and wound tumor cell, there is direct killing tumor, therapeutic effect is good, relapse rate is low advantage, be widely used in the treatment of clinical tumor.The structure of the carrier-apparatus for wave-energy source of existing radioactive source is straight tube structure, and it is when cancer of anal canal (i.e. malignant tumor) affected area to anal carries out radiotherapy, and can be close to the cancer of anal canal focus of anal, radiotherapeutic effect is better.But, the canceration focus of anal very easily spreads outside anus, after the cancer of anal canal focus of anal spreads outside anus edge, form the cancer of anal margin focus being positioned at anal orifice, obviously, the focus of the apparatus for wave-energy source of straight tube structure and the cancer of anal margin of anal orifice just can not be close to, and can produce certain distance, can not adapt to the radiotherapy in the treatment of this situation with the focal zone of cancer of anal margin.If still adopt the apparatus for wave-energy source of existing straight tube structure to grant radioactive source to treat cancer of anal margin, then can weaken because of the distant exit dose of arrival focus that makes, have a strong impact on radiotherapeutic effect, cause tumor recurrence; If for enabling focus accept enough exit doses, the dosage of radioactive source just must be increased, the normal skin tissue near focus can be caused again thus to be subject to excessive radiation and damaged, causing radioactivity early complication.
Summary of the invention
The object of the invention is the deficiency existed for prior art; a kind of apparatus for wave-energy source of anal-rectal tumor radiotherapy is provided; the apparatus for wave-energy source of this anal-rectal tumor radiotherapy has good radiotherapeutic effect for cancer of anal canal focus and cancer of anal margin focus simultaneously; reduce the probability of tumor recurrence; be conducive to the radical cure of tumor, and protect again the normal skin tissue near cancer of anal canal focus and cancer of anal margin focus.
The object of the present invention is achieved like this: a kind of apparatus for wave-energy source of anal-rectal tumor radiotherapy, comprise the cylindrical apparatus for wave-energy source body that diameter is 3cm, the front end of described apparatus for wave-energy source body is spherical arc, arc radius is 1.5cm, supply radiator duct is provided with in apparatus for wave-energy source body, the rear end of apparatus for wave-energy source body is stretched out outside one end of described supply radiator duct, the overhanging end of supply radiator duct is provided with snap joint, the leading portion of described apparatus for wave-energy source body is the right cylinder section of length 8.5cm, this right cylinder section comprises the spherical arc of front end, the back segment of described apparatus for wave-energy source body is 150 degree of arc-shaped bends, the inflection arc length of this curved bend tune is 5cm, axially three supply radiator ducts are provided with in described apparatus for wave-energy source body, three supply radiator ducts respectively with the axis parallel of apparatus for wave-energy source body, described three supply radiator duct arranged off-centre are the distribution in circular curve in the semicircle of apparatus for wave-energy source body cross-section inflection side, the distance of the inflection side outer wall of the centre-to-centre spacing apparatus for wave-energy source body of every root supply radiator duct is 5.5mm, wherein the first supply radiator duct and the second supply radiator duct, circular arc between second supply radiator duct with the 3rd supply radiator duct center of circle is equal, central angle corresponding to this circular arc is 60 degree.
Be provided with three in described apparatus for wave-energy source body for installing the hole of fixing supply radiator duct, three supply radiator ducts insert respectively in three holes and are adhesively fixed.
The curved bend tune of described apparatus for wave-energy source body back segment is that circular wedge is adhesively fixed and forms by multiple cross section, and three are arranged on the short side of wedge axial length for the hole of installing fixing supply radiator duct.
The stem stem that the right cylinder section of described apparatus for wave-energy source body leading portion is provided with circular arc spherical surface by trocar sheath and one end is formed, the excircle diameter of described stem stem is less than the diameter of circular arc spherical surface, the outer peripheral face of described stem stem arranges three axially extended grooves, three grooves respectively with the axis parallel of right cylinder section, three grooves are spaced apart along one section of circular curve of the excircle of stem stem, described trocar sheath empty set on stem stem, and is adhesively fixed with stem stem, forms three for installing the blind hole of fixing supply radiator duct.
The one end of stretching out apparatus for wave-energy source body outside three supply radiator ducts seamlessly transits bending respectively.
Described supply radiator duct is external diameter is 5mm, and internal diameter is the stainless steel tube of 4mm.
Described apparatus for wave-energy source body adopts pmma material to make, and the outer wall of apparatus for wave-energy source body inflection side is provided with graduation mark vertically.
Have employed such scheme, the present invention is had the following advantages: the leading portion due to the apparatus for wave-energy source body of the apparatus for wave-energy source of this anal-rectal tumor radiotherapy is the right cylinder section of length 8.5cm, this right cylinder section comprises the spherical arc of front end, the back segment of described apparatus for wave-energy source body is 150 degree of arc-shaped bends, the inflection arc length of this curved bend tune is 5cm, both passing through of source of executing had been beneficial in supply radiator duct, the interior turn of bilge being beneficial to again apparatus for wave-energy source body is close to the cancer of anal margin focus of anal orifice, make the cancer of anal margin focus of this anal orifice can accept enough exit doses, improve radiotherapeutic effect, and avoid again the normal skin tissue near the cancer of anal margin focus of anal orifice to be subject to excessive radiation and damaged, cause radioactivity early complication, the right cylinder section of the leading portion of apparatus for wave-energy source body also can be close to the cancer of anal canal focus of anal again, radiotherapeutic effect is better, make the apparatus for wave-energy source of this anal-rectal tumor radiotherapy be provided with good radiotherapeutic effect for cancer of anal canal focus and cancer of anal margin focus simultaneously, reduce the probability of tumor recurrence, be conducive to the radical cure of tumor, and the normal skin tissue protected again near cancer of anal canal focus and cancer of anal margin focus, be convenient to the unification executing source amount in whole supply radiator duct, the treatment plan of doctor is guaranteed.
Axially three supply radiator ducts are provided with in described apparatus for wave-energy source body, three supply radiator ducts respectively with the axis parallel of apparatus for wave-energy source body, described three supply radiator duct arranged off-centre are the distribution in circular curve in the semicircle of apparatus for wave-energy source body cross-section inflection side, it carries out after-loading therapy by three supply radiator ducts of eccentric setting, can reduce in anal canal, outer tumor vicinity normal skin tissue irradiates and is measured, reduce the incidence rate of radioactivity early complication, improve the effect of radiation therapy, from and increase in anal canal, the exit dose that outer focus accepts, improve radiotherapeutic effect, reduce the probability of tumor recurrence, be conducive to the radical cure of tumor.
The distance of the inflection side outer wall of the centre-to-centre spacing apparatus for wave-energy source body of every root supply radiator duct is 5.5mm, wherein the first supply radiator duct and the second supply radiator duct, and the circular arc between the second supply radiator duct with the 3rd supply radiator duct center of circle is equal, and the central angle corresponding to this circular arc is 60 degree.This structure is convenient to the unification executing source amount in each supply radiator duct, exposure dose is evenly distributed, avoids between two supply radiator ducts and occur low amounts district, and effectively protect the normal structure of opposite side anal canal wall, be conducive to the radical cure of tumor.
The curved bend tune of described apparatus for wave-energy source body back segment is that circular wedge is adhesively fixed and forms by multiple cross section, and three are arranged on the short side of wedge axial length for the hole of installing fixing supply radiator duct.Adopt wedge to be spliced into curved bend tune, be both conducive to the processing of product, and be beneficial to the installation and removal of product.
The stem stem that the right cylinder section of described apparatus for wave-energy source body leading portion is provided with circular arc spherical surface by trocar sheath and one end is formed, the excircle diameter of described stem stem is less than the diameter of circular arc spherical surface, the outer peripheral face of described stem stem arranges three axially extended grooves, three grooves respectively with the axis parallel of right cylinder section, three grooves are spaced apart along one section of circular curve of the excircle of stem stem, described trocar sheath empty set is on stem stem, and be adhesively fixed with stem stem, form three for installing the blind hole of fixing supply radiator duct, make the installation of supply radiator duct, fixing more convenient, firmly, stable, ensure that the spacing distance of three supply radiator ducts can keep stable, position skew can not be there is because of use, and make the installation accuracy of supply radiator duct higher, be conducive to being uniformly distributed of exposure dose, be conducive to accuracy during radiotherapy, therapeutic effect is good.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is sectional view of the present invention;
Fig. 3 is the distribution schematic diagram of supply radiator duct of the present invention.
In accompanying drawing, 1 is apparatus for wave-energy source body, and 11 is right cylinder section, and 111 is trocar sheath, and 112 is stem stem, and 12 is curved bend tune, and 121 is wedge, and 2 is supply radiator duct, and 3 is snap joint, and 4 is graduation mark.
Detailed description of the invention
See Fig. 1 to Fig. 3, a kind of apparatus for wave-energy source of anal-rectal tumor radiotherapy, comprises the cylindrical apparatus for wave-energy source body 1 that diameter is 3cm.Described apparatus for wave-energy source body 1 adopts pmma material to make, and the outer wall of apparatus for wave-energy source body 1 inflection side is provided with graduation mark 4 vertically.The front end of described apparatus for wave-energy source body 1 is spherical arc, and arc radius is 1.5cm, is provided with supply radiator duct 2 in apparatus for wave-energy source body 1, stretches out the rear end of apparatus for wave-energy source body 1 outside one end of described supply radiator duct 2, and the overhanging end of supply radiator duct 2 is provided with snap joint 3, supporting with connection tube.The leading portion of described apparatus for wave-energy source body 1 is the right cylinder section 11 of length 8.5cm, this right cylinder section comprises the spherical arc of front end, the back segment of described apparatus for wave-energy source body is 150 degree of arc-shaped bends, the inflection arc length of this curved bend tune 12 is 5cm, both be beneficial in supply radiator duct 2 and executed passing through of source, the interior turn of bilge being beneficial to again apparatus for wave-energy source body is close to the cancer of anal margin focus of anal orifice, make the cancer of anal margin focus of this anal orifice can accept enough exit doses, improve radiotherapeutic effect, and avoid again the normal skin tissue near the cancer of anal margin focus of anal orifice to be subject to excessive radiation and damaged, cause radioactivity early complication.The right cylinder section of the leading portion of apparatus for wave-energy source body also can be close to the cancer of anal canal focus of anal again; radiotherapeutic effect is better; make the apparatus for wave-energy source of this anal-rectal tumor radiotherapy be provided with good radiotherapeutic effect for cancer of anal canal focus and cancer of anal margin focus simultaneously; reduce the probability of tumor recurrence; be conducive to the radical cure of tumor; and the normal skin tissue protected again near cancer of anal canal focus and cancer of anal margin focus, be convenient to the unification executing source amount in whole supply radiator duct.Axially three supply radiator ducts 2 are provided with in described apparatus for wave-energy source body 1.Described supply radiator duct 2 for external diameter be 5mm, internal diameter is the stainless steel tube of 4mm.Three supply radiator ducts 2 respectively with the axis parallel of apparatus for wave-energy source body 1, described three supply radiator duct 2 arranged off-centre are the distribution in circular curve in the semicircle of apparatus for wave-energy source body 1 cross section inflection side.It carries out after-loading therapy by three supply radiator ducts of eccentric setting, the irradiation of anal canal inside and outside tumor vicinity normal skin tissue can be reduced measured, reduce the incidence rate of radioactivity early complication, improve the effect of radiation therapy, from and increase the exit dose that the inside and outside focus of anal canal accepts, improve radiotherapeutic effect, reduce the probability of tumor recurrence, be conducive to the radical cure of tumor.The distance of the inflection side outer wall of the centre-to-centre spacing apparatus for wave-energy source body 1 of every root supply radiator duct 2 is 5.5mm; wherein the first supply radiator duct and the second supply radiator duct; circular arc between second supply radiator duct with the 3rd supply radiator duct center of circle is equal; central angle corresponding to this circular arc is 60 degree; this structure is convenient to the unification executing source amount in each supply radiator duct; exposure dose is evenly distributed; and effectively protect normal mucosa and the tissue of opposite side anal canal wall; turn avoid between two supply radiator ducts and occur low amounts district, be conducive to the radical cure of tumor.
Be provided with three in described apparatus for wave-energy source body 1 for installing the hole of fixing supply radiator duct 2, three supply radiator ducts 2 insert in three holes respectively and are adhesively fixed.The length that three supply radiator ducts 2 stretch into apparatus for wave-energy source body 1 is identical, and is less than the length of apparatus for wave-energy source body 1.The curved bend tune 12 of described apparatus for wave-energy source body 1 back segment is that circular wedge 121 is adhesively fixed and forms by multiple cross section, three are arranged on the short side of wedge 121 axial length for the hole of installing fixing supply radiator duct 2, both be conducive to the processing of product, and be beneficial to the installation and removal of product.The stem stem 12 that the right cylinder section 11 of described apparatus for wave-energy source body 1 leading portion is provided with circular arc spherical surface by trocar sheath 111 and one end is formed, the diameter of described stem stem 12 is less than the diameter of circular arc spherical surface, the outer peripheral face of described stem stem 12 arranges three axially extended grooves, three grooves respectively with the axis parallel of right cylinder section 11, three grooves are spaced apart along one section of circular curve of the excircle of stem stem 12, described trocar sheath 111 empty set is on stem stem 12, and be adhesively fixed with stem stem 12, form three for installing the blind hole of fixing supply radiator duct 2.Three supply radiator ducts 2 stretch in three grooves and are adhesively fixed.The right cylinder section 11 of this structure makes the installation of supply radiator duct 2, fixing more convenient, firm, stable, ensure that three supply radiator ducts 2 can be stablized holding position, position skew can not be there is because of use, and make the installation accuracy of supply radiator duct 2 higher, be conducive to being uniformly distributed of exposure dose, certainly, the right cylinder section 11 of apparatus for wave-energy source body 1 leading portion also can be made of one piece.But, the bad processing of blind hole for installing fixing supply radiator duct 2 of this integrated structure, and the poor quality processed, and when mounted, also bad fixing supply radiator duct 2.The one end of stretching out apparatus for wave-energy source body 1 outside three supply radiator ducts 2 seamlessly transits bending respectively so that be connected more convenient with the radioactive source of afterloading unit when using, while the radioactive source in afterloading unit can be allowed again to pass through smoothly.Radioactive source is delivered in the cavity of supply radiator duct 2 by the Special connecting pipe between afterloading unit and supply radiator duct by steel wire from afterloading unit when treating.Radioactive source adopts the neutron of californium-252.
During installation, first three supply radiator ducts can be inserted respectively in three grooves of stem stem and be adhesively fixed, be inserted in trocar sheath, be adhesively fixed trocar sheath and stem stem the i.e. apparatus for wave-energy source body leading portion that holds together, then, after each wedge being penetrated each section of supply radiator duct, bonding holding together is apparatus for wave-energy source body back segment again, finally, the leading portion of apparatus for wave-energy source body and back segment is adhesively fixed.Adopt the structure of apparatus for wave-energy source body of the present invention to make the installation of supply radiator duct extremely convenient, fast, and precision is high, also makes the processing of apparatus for wave-energy source body more convenient.
Claims (4)
1. the apparatus for wave-energy source of an anal-rectal tumor radiotherapy, comprise the cylindrical apparatus for wave-energy source body that diameter is 3cm, the front end of described apparatus for wave-energy source body is spherical arc, arc radius is 1.5cm, supply radiator duct is provided with in apparatus for wave-energy source body, the rear end of apparatus for wave-energy source body is stretched out outside one end of described supply radiator duct, the overhanging end of supply radiator duct is provided with snap joint, it is characterized in that: the leading portion of described apparatus for wave-energy source body is the right cylinder section of length 8.5cm, this right cylinder section comprises the spherical arc of front end, the back segment of described apparatus for wave-energy source body is that 150 degree of arc-shaped bends form curved bend tune, the inflection arc length of this curved bend tune is 5cm, axially three supply radiator ducts are provided with in described apparatus for wave-energy source body, three supply radiator ducts respectively with the axis parallel of apparatus for wave-energy source body, three are provided with for installing the hole of fixing supply radiator duct in described apparatus for wave-energy source body, three supply radiator ducts insert respectively in three holes and are adhesively fixed, the curved bend tune of described apparatus for wave-energy source body back segment is that circular wedge is adhesively fixed and forms by multiple cross section, three are arranged on the short side of wedge axial length for the hole of installing fixing supply radiator duct, described three supply radiator duct arranged off-centre are the distribution in circular curve in the semicircle of apparatus for wave-energy source body cross-section inflection side, the distance of the inflection side outer wall of the centre-to-centre spacing apparatus for wave-energy source body of every root supply radiator duct is 5.5mm, wherein the first supply radiator duct and the second supply radiator duct, circular arc between second supply radiator duct with the 3rd supply radiator duct center of circle is equal, central angle corresponding to this circular arc is 60 degree, the one end of stretching out apparatus for wave-energy source body outside three supply radiator ducts seamlessly transits bending respectively.
2. the apparatus for wave-energy source of anal-rectal tumor radiotherapy according to claim 1, it is characterized in that: the stem stem that the right cylinder section of described apparatus for wave-energy source body leading portion is provided with circular arc spherical surface by trocar sheath and one end is formed, the excircle diameter of described stem stem is less than the diameter of circular arc spherical surface, the outer peripheral face of described stem stem arranges three axially extended grooves, three grooves respectively with the axis parallel of right cylinder section, three grooves are spaced apart along one section of circular curve of the excircle of stem stem, described trocar sheath empty set is on stem stem, and be adhesively fixed with stem stem, form three for installing the blind hole of fixing supply radiator duct.
3. the apparatus for wave-energy source of anal-rectal tumor radiotherapy according to claim 1, is characterized in that: it is 5mm that described three supply radiator ducts are external diameter, and internal diameter is the stainless steel tube of 4mm.
4. the apparatus for wave-energy source of anal-rectal tumor radiotherapy according to claim 1, is characterized in that: described apparatus for wave-energy source body adopts pmma material to make, and the outer wall of apparatus for wave-energy source body inflection side is provided with graduation mark vertically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410099697.2A CN103845789B (en) | 2014-03-18 | 2014-03-18 | The apparatus for wave-energy source of anal-rectal tumor radiotherapy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410099697.2A CN103845789B (en) | 2014-03-18 | 2014-03-18 | The apparatus for wave-energy source of anal-rectal tumor radiotherapy |
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| CN103845789A CN103845789A (en) | 2014-06-11 |
| CN103845789B true CN103845789B (en) | 2016-02-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111569275B (en) * | 2020-03-31 | 2022-03-01 | 中国医学科学院北京协和医院 | Nested inserting needle source applicator |
| CN112043977B (en) * | 2020-09-30 | 2022-07-15 | 河南科技大学第一附属医院 | Source applying device for radiation therapy of anal canal cancer and perianal cancer |
| CN113398494B (en) * | 2021-06-28 | 2022-05-10 | 青岛大学附属医院 | Integrated multifunctional source applicator |
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| CN203777508U (en) * | 2014-03-18 | 2014-08-20 | 中国人民解放军第三军医大学第三附属医院 | Anal canal eccentric source applicator |
Family Cites Families (1)
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| EP2563474A1 (en) * | 2010-04-27 | 2013-03-06 | Neovista, Inc. | Radiotherapy delivery cannula with visual confirmation window |
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2014
- 2014-03-18 CN CN201410099697.2A patent/CN103845789B/en not_active Expired - Fee Related
Patent Citations (5)
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|---|---|---|---|---|
| US5860909A (en) * | 1996-10-18 | 1999-01-19 | Mick Radio Nuclear Instruments, Inc. | Seed applicator for use in radiation therapy |
| CN2322641Y (en) * | 1998-04-27 | 1999-06-09 | 天津市肿瘤医院 | Integrated double-tube radioactive source placing device for intracavitary brachytherapy of nasopharyngeal carcinoma |
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