CN113018706B - Treatment needle of multichannel vagina afterloading treatment device and fixing method of treatment tube - Google Patents
Treatment needle of multichannel vagina afterloading treatment device and fixing method of treatment tube Download PDFInfo
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- CN113018706B CN113018706B CN202110301724.XA CN202110301724A CN113018706B CN 113018706 B CN113018706 B CN 113018706B CN 202110301724 A CN202110301724 A CN 202110301724A CN 113018706 B CN113018706 B CN 113018706B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 210000001215 vagina Anatomy 0.000 title claims abstract description 24
- 238000003780 insertion Methods 0.000 claims abstract description 39
- 230000037431 insertion Effects 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims description 8
- 238000002560 therapeutic procedure Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000001225 therapeutic effect Effects 0.000 description 14
- 238000001959 radiotherapy Methods 0.000 description 10
- 206010008342 Cervix carcinoma Diseases 0.000 description 3
- 208000006105 Uterine Cervical Neoplasms Diseases 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002725 brachytherapy Methods 0.000 description 3
- 201000010881 cervical cancer Diseases 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1014—Intracavitary radiation therapy
- A61N5/1016—Gynaecological radiation therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/1008—Apparatus for temporary insertion of sources, e.g. afterloaders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/101—Magazines or cartridges for seeds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1014—Intracavitary radiation therapy
- A61N2005/1018—Intracavitary radiation therapy with multiple channels for guiding radioactive sources
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The invention discloses a method for fixing a treatment needle and a treatment tube of a multi-channel vagina afterloading treatment device, and relates to the field of medical equipment. The multichannel vagina after-loading treatment device adopted by the scheme comprises a treatment device body and an elastic limiting part, the fixing method adopts a newly designed multichannel vagina after-loading treatment device structure, a treatment needle inserted into the treatment device body is fixed through a limiting ring, and a treatment tube inserted into the treatment device body is fixed through a limiting plug, so that the treatment needle is reduced, the treatment tube is shifted in the treatment process, the treatment effect is reduced, and even the treatment can not be carried out, the accuracy of the position fixing of the insertion needle and the treatment tube is ensured, and the multichannel vagina after-loading treatment device has the advantages of convenience and quickness in fixing.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a method for fixing a treatment needle and a treatment tube of a multichannel vagina afterloading treatment device.
Background
Cervical cancer is the most common gynecological malignant tumor, radiotherapy is one of the main treatment means of cervical cancer, an insertion needle is adopted as a source applicator, a radioactive source can directly enter a focal region, the radiotherapy dose of the focal region is improved on the premise of not increasing the damage of surrounding normal tissues, the optimal radiotherapy effect can be obtained theoretically, the insertion needle has no nerve touch feeling at the bottom of a vagina, the effect of minimally invasive, high efficiency and low pain is achieved by adopting the insertion needle, the main technical means of cervical cancer radiotherapy is provided, and the insertion needle can be used for radiotherapy of postoperative stumps and can also be used for cancer patients who are not suitable for operations.
The main technical problem faced by the insertion needle radiotherapy is the insertion guiding manner of the insertion needle, the insertion needle needs to be accurately inserted into a target area, namely the front end of the insertion needle needs to be accurately inserted into a dwell point, and the correct insertion direction and insertion depth need to be preset, so that adjacent organs such as rectum, bladder and the like are prevented from being injured.
At present, some possible embodiments are: firstly, performing vagina construction in a filling mode to obtain a three-dimensional model of a vagina, then determining the number of residence points and the positions of the residence points relative to the vagina model, then obtaining a three-dimensional vagina model with an insertion needle channel by adopting a three-dimensional modeling method, and then manufacturing a vagina insertion needle applicator mould in a 3D printing mode.
However, this method can obtain a high-precision mold for an individual patient, but the vaginal modeling process is complex, the efficiency is low, the method is only suitable for a single patient, the method has no universality, and the repeatability of the mold is not completely guaranteed because the correlator of the patient changes at different times, so that one patient may need to make the mold many times. At present, some fixed inserting needle applicators also exist, but the applicators all adopt fixed inserting needle guide holes, cannot change the position and cannot obtain a high-precision standing point.
In another example, the patent application No. 201720875978.1 discloses a multichannel aftervaginal treatment device, which includes a rotary body-shaped treatment device body, wherein the treatment device body is coaxially provided with a through hole-shaped introduction hole for inserting a treatment tube, such as a vaginal tube or a uterine cavity tube, the treatment device body is further provided with a through hole-shaped insertion hole which is on the same plane with an opening of the introduction hole and has an included angle smaller than 90 ° with an axis of the introduction hole, and the insertion hole is used for inserting a treatment needle, such as an insertion needle.
When in use, the therapeutic device body is inserted into the vagina, the leading-in hole on the therapeutic device body is used for inserting a therapeutic tube, such as a vaginal tube, one end of the vaginal tube is connected with a radioactive source, and the other end of the vaginal tube passes through the leading-in hole to reach an infected part in the vagina for radiotherapy; the treatment needle inserts through the contact pin hole that is located the treatment device body, inserts the infection position, carries out corresponding radiation therapy to the infection position to make the radiation position more accurate, optimize the radiation therapy effect.
However, in order to facilitate the insertion of the treatment tube and the treatment needle, the opening diameters of the introduction hole and the insertion hole need to be larger than those of the treatment tube and the treatment needle, so that the treatment tube and the treatment tube may be displaced.
Therefore, the patent application adopts the following solution: the tail end of the treatment device body is provided with an annular groove, namely the spherical end surface of the treatment device body is provided with the annular groove, so that a rubber band can be fixed in the annular groove, the insertion needle is bound, and the insertion needle is prevented from being separated outwards.
However, this fixing method can only be used for fixing the insertion needle, and is convenient and inconvenient to operate, and in addition, the treatment tube in the middle cannot be fixed.
Thirdly, in addition, the patent application with application number 201620114129.X also discloses a brachytherapy applicator template, the template is arranged in an integrated structure and comprises a cylindrical inserting part and a fixing part, the inserting part comprises an inserting end and a treatment end, the fixing part is connected with the inserting end of the inserting part, a through groove is formed in the inserting part from the inserting end to the treatment end, a plurality of near-end uterine bypass holes and far-end uterine bypass holes for the inserting needle to pass through are formed in the circumferential surface of the treatment end of the inserting part, an intracavity applicator through hole is formed in the top of the treatment end, when the applicator is placed, the intracavity brachytherapy applicator is firstly placed in the cavity, and then the template is placed in the vagina.
This patent application is for the fixed needle of planting that is located intracavity applicator through-hole intracavity brachytherapy applicator, distal end palace by pass in the hole, and the scheme of its adoption is: the hole walls of the far-end uterine bypass hole and the through hole of the intracavity source applicator are of frosted structures, and the hole wall structures of the frosted structures enable the inserted inserting needle to have higher friction coefficient, so that the connection strength is further enhanced.
However, the formation process of the frosted structure is complicated and is not easy to implement.
Therefore, it is desirable to provide a solution that facilitates the fixation of the insertion needle and the treatment tube.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for fixing a treatment needle and a treatment tube of a multi-channel vagina after-loading treatment device, which adopts a newly designed multi-channel vagina after-loading treatment device structure, fixes the treatment needle inserted into the treatment device body through a limit ring, and fixes the treatment tube inserted into the treatment device body through a limit plug, so that the situation that the treatment effect is reduced or even the treatment cannot be carried out due to the displacement of the treatment needle and the treatment tube in the treatment process is reduced, the accuracy of the position fixing of the insertion needle and the treatment tube is ensured, and the method has the advantages of convenience and quickness in fixing.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a fixing method of a treatment needle and a treatment tube of a multichannel aftervaginal loading treatment device is characterized in that the multichannel aftervaginal loading treatment device comprises an integrally formed treatment device body and an elastic limiting part arranged on the treatment device body, the treatment device body comprises a head part, a cylindrical main body part and a rear part, the treatment device body is provided with a needle inserting hole and a tube inserting hole which are sequentially communicated with the head part, the main body part and the rear part, and the needle inserting hole and the tube inserting hole are respectively used for inserting the treatment needle and the treatment tube;
an annular mounting groove is formed in the circumferential surface of the main body part, the elastic limiting part comprises a limiting ring and a limiting plug, the limiting ring is fixed in the annular mounting groove, a first limiting hole is formed in the limiting ring corresponding to the pin inserting hole, and the diameter of the first limiting hole is smaller than that of the treatment needle;
the limiting plug is provided with a second limiting hole corresponding to the intubation hole, and the aperture of the second limiting hole is smaller than the diameter of the treatment tube;
the limiting plug is arranged at the head part or the rear part;
the fixing method comprises the following steps:
step S1: installing a limiting ring in the annular installation groove;
step S2: installing a limit plug on the head or the rear part;
step S3: when the limiting plug is arranged on the head, the treatment tube penetrates through a second limiting hole in the limiting plug, and the treatment tube penetrates into the treatment device body from the head to the rear part;
when the limiting plug is arranged at the rear part, the treatment tube penetrates through a second limiting hole in the limiting plug, and the treatment tube penetrates into the treatment device body from the rear part to the head part;
step S4: the treatment needle penetrates through the treatment device body from the rear part to the head part, and the treatment needle penetrates through a first limiting hole in the limiting ring.
Preferably, a positioning strip is further arranged in the annular mounting groove, the positioning strip is parallel to the axis direction of the main body part, and a positioning groove matched with the positioning strip is arranged on the inner ring of the limiting ring;
the step S1 includes: and sleeving the limiting ring on the treatment device body from the head part, and matching and fixing the positioning strip and the positioning groove to align the first limiting hole and the pin inserting hole.
Preferably, the positioning strips are arranged in a plurality around the circumference of the main body part, and the positioning grooves are arranged in one-to-one correspondence with the positioning strips.
Preferably, the head part or the rear part is provided with an installation groove for installing the limit plug;
preferably, the limiting plug comprises an insertion cylinder matched with the insertion tube hole, and the second limiting hole is formed in the insertion cylinder;
the step S2 further includes: when the limiting plug is matched with the mounting groove, the inserting cylinder is matched and fixed with the inserting tube hole.
The step S2 further includes: when the limiting plug is matched with the mounting groove, the inserting cylinder is matched and fixed with the inserting pipe hole.
Preferably, conical holes are symmetrically arranged on two sides of the first limiting hole, the smaller ends of the two conical holes are respectively communicated with two ends of the first limiting hole, and the smaller ends of the two conical holes are communicated with the pin inserting hole;
the step S3 includes: when the treatment needle passes through the first limiting hole, the treatment needle passes through the first limiting hole from the conical hole on one side of the first limiting hole and penetrates out of the conical hole on the other side of the first limiting hole.
Compared with the prior art, the invention has the beneficial technical effects that:
the treatment needle penetrates through the rear insertion needle hole and penetrates out of the head part through the first limiting hole, and due to the elasticity of the limiting ring, after the treatment needle penetrates through the first limiting hole, the limiting ring can elastically deform until the treatment needle is inserted to a designated position, the limiting ring elastically contracts and fixes the treatment needle;
the treatment tube is inserted into the limiting plug from the head part or the rear part and passes through the second limiting hole, and the limiting plug also has elasticity, so that after the treatment tube passes through the second limiting hole, the limiting plug can elastically deform until the treatment tube is inserted into a specified position, the limiting plug elastically contracts, the treatment tube is fixed, and the fixing mode is quick and stable.
Drawings
Fig. 1 is a schematic view of the overall structure of one embodiment of the present invention;
FIG. 2 is an exploded view of one embodiment of the present invention;
fig. 3 is a front view of one embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along the plane A-A in FIG. 3;
fig. 5 is a schematic view of the overall structure of another embodiment of the present invention;
fig. 6 is an exploded view of another embodiment of the present invention;
fig. 7 is a front view of another embodiment of the present invention;
fig. 8 is a sectional view taken along the line B-B in fig. 7.
Wherein, the technical characteristics that each reference numeral refers to are as follows:
1. a treatment device body; 101. a head portion; 1011. installing a groove; 1012. a process tank; 102. a main body portion; 1021. an annular mounting groove; 1022. a positioning bar; 103. a rear portion; 1031. default gap; 2. an elastic limiting member; 201. a limiting ring; 2011. a first limiting hole; 2012. positioning a groove; 2013. chamfering with circular arc; 2014. a conical hole; 202. a limiting plug; 2021. a second limiting hole; 2022. inserting a cylinder; 3. a pin inserting hole; 4. a cannula hole; 5. and (4) a process auxiliary groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
The embodiment discloses a method for fixing a treatment needle and a treatment tube of a multichannel vagina after-loading treatment device, and with reference to fig. 1 to 8, the multichannel vagina after-loading treatment device adopted by the method for fixing comprises a treatment device body 1 and an elastic limiting part 2 fixed on the treatment device body 1, the treatment device body 1 is integrally formed, the treatment device body 1 comprises an arc-shaped head part 101, a cylindrical main body part 102 and a disc-shaped rear part 103, the treatment device body 1 is provided with a needle insertion hole 3 and a needle insertion hole 4 which are sequentially communicated with the head part 101, the main body part 102 and the rear part 103, the needle insertion hole 3 and the needle insertion hole 4 are respectively used for inserting the treatment needle and the treatment tube, the treatment needle and the treatment tube are in the prior art and are not shown in the figures.
Referring to fig. 2, an annular mounting groove 1021 is formed on the circumferential surface of the main body portion 102, the elastic limiting member 2 includes a limiting ring 201 and a limiting plug 202, the limiting ring 201 is fixed in the annular mounting groove 1021, a first limiting hole 2011 is formed on the limiting ring 201 corresponding to the pin insertion hole 3, and the diameter of the first limiting hole 2011 is smaller than the diameter of the treatment needle;
the limit plug 202 is provided with a second limit hole 2021 corresponding to the cannula hole 4, and the aperture of the second limit hole 2021 is smaller than the diameter of the therapeutic tube.
Referring to fig. 2, a positioning strip 1022 is further disposed in the annular mounting groove 1021, the positioning strip 1022 is parallel to the axial direction of the main body portion 102, and a positioning groove 2012 engaged with the positioning strip 1022 is disposed on the inner ring of the limiting ring 201.
A positioning strip 1022 is disposed in the annular mounting groove 1021, so that the first limiting hole 2011 on the limiting ring 201 is aligned with the pin hole 3 formed on the treatment device body 1.
The two sides of the inner ring of the limit ring 201 are both provided with arc chamfers 2013, and the limit ring 201 is sleeved in the annular mounting groove 1021 from the head 101 of the treatment device body 1, so that the limit ring 201 can be conveniently mounted.
The positioning bars 1022 are arranged in a plurality of numbers around the circumference of the main body portion 102, and the positioning grooves 2012 are arranged in one-to-one correspondence with the positioning bars 1022.
The circumferential surface of the main body part 102 and the space between the positioning strips 1022 are also provided with process auxiliary grooves 5, the treatment device body 1 is integrally molded by injection, and the arrangement of the process auxiliary grooves 5 is beneficial to drawing and reducing the generation of bubble defects.
The stop plug 202 is disposed on the head 101. referring to the figures, the stop plug 202 may also be disposed on the rear 103. referring to the figures.
In one embodiment, when the position limiting plug 202 is disposed on the head 101, the head 101 defines a mounting groove 1011 for mounting the position limiting plug 202, and the mounting groove 1011 is disposed to facilitate fixing the position limiting plug 202.
In another embodiment, referring to FIG. 5, the mounting recess 1011 is disposed in the rear portion 103 when the stopper 202 is disposed in the head 101.
Referring to fig. 2 and 5, a plurality of fan-shaped process grooves 1012 are uniformly distributed on the front end and the rear part 103 of the head part 101 at intervals around the center of the plug-in pipe hole 4.
When the limiting plug 202 is arranged on the head 101, four process grooves 1012 are arranged on the head 101, every two process grooves 1012 are symmetrically arranged, the installation groove 1011 is located between the process grooves 1012 on the two sides, and the structure is reasonably arranged, so that the head 101 is high in structural strength and not prone to deformation; the process slots 1012 of the rear portion 103 are arranged six around the center of the cannula bore 4.
When the limiting plug 202 is arranged on the rear portion 103, six process grooves 1012 of the head portion 101 are arranged, the six process grooves 1012 are uniformly distributed around the center of the plug tube hole 4, the number of the process grooves 1012 on the rear portion 103 is four, every two process grooves 1012 are symmetrically arranged, and the installation grooves 1011 are located between the process grooves 1012 on the two sides.
Referring to fig. 4, conical holes 2014 are symmetrically arranged on two sides of the first limiting hole 2011, the smaller ends of the two conical holes 2014 are respectively communicated with two ends of the first limiting hole 2011, and the smaller ends of the two conical holes 2014 are both communicated with the pin hole 3.
The conical holes 2014 are formed in the two sides of the first limiting hole 2011 on the limiting ring 201, so that the therapeutic needle can be conveniently guided to pass through the first limiting hole 2011, the conical holes 2014 are symmetrically formed in the two sides of the first limiting hole 2011, the limiting ring 201 does not have a positive or negative division, and installation is facilitated.
The limiting plug 202 comprises an insertion cylinder 2022 matched with the insertion tube hole 4, and the second limiting hole 2021 is formed in the insertion cylinder 2022.
The rear portion 103 is symmetrically provided with arc-shaped default gaps 1031, which are beneficial to grasping the rear portion 103, facilitating taking and placing the treatment device body 1 and adjusting the position of the treatment device body 1, reducing the overall occupied area of the rear portion 103, and reducing discomfort for patients.
The limiting ring 201 and the limiting plug 202 may be a silica gel ring or a silica gel plug, or may also be a rubber ring or a rubber plug, such as a butyl ring or a butyl plug.
The fixing method of the treatment needle and the treatment tube of the multichannel aftervaginal loading treatment device comprises the following steps:
step S1: installing the limiting ring 201 in the annular installation groove 1021, and aligning the first limiting hole 2011 with the pin hole 3;
step S2: installing the limiting plug 202 on the head part 101 or the rear part 103, and installing the limiting plug 202 in the installation groove 1011;
step S3: referring to fig. 1 to 4, when the limiting plug 202 is mounted on the head 101, the therapeutic tube passes through the second limiting hole on the limiting plug 202, and the therapeutic tube penetrates into the therapeutic device body 1 from the head 101 to the rear 103;
when the treatment needle passes through the first limit hole 2011, the treatment needle passes through the first limit hole 2011 through the conical hole 2014 on one side of the first limit hole 2011 and penetrates out of the conical hole 2014 on the other side of the first limit hole 2011.
Referring to fig. 5 to 8, when the limiting plug 202 is installed at the rear portion 103, the therapeutic tube passes through the second limiting hole 2021 of the limiting plug 202, and the therapeutic tube passes through the therapeutic device body 1 from the rear portion 103 to the head 101;
the reason why the limiting plug 202 is installed on the head part 101 and the rear part 103 in two different embodiments to penetrate the treatment tube from different directions is that: the possibility that the limiting plug 202 falls off from the mounting groove 1011 in the process of inserting the treatment tube can be effectively reduced, and the fixing effect of the treatment tube is ensured;
step S4: the therapeutic needle penetrates the therapeutic device body 1 from the rear part 103 to the head part 101, and the therapeutic needle penetrates through the first limit hole 2011 on the limit ring 201.
When the multichannel vagina after-loading treatment device is used for treating a patient, the treatment device body 1 is inserted into the vagina of the patient firstly, the head part 101 is contacted with an affected part, the needle insertion hole 3 at the corresponding position is selected according to actual treatment requirements, the treatment needle is inserted into the treatment device body 1 from the rear part 103 until the treatment needle is inserted into tissues of the affected part, and finally, corresponding physical radiotherapy is carried out.
After the treatment tube is inserted into the treatment device body 1, the treatment tube is limited and fixed by the elastic contractive force of the limiting plug 202, similarly, after the treatment needle is inserted into the treatment device body 1, the treatment tube is limited and fixed by the elastic contractive force of the limiting ring 201, thereby maintaining the positioning reliability and stability of the treatment tube and the treatment needle.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (6)
1. The fixing method of the treatment needle and the treatment tube of the multichannel afterloading vagina treatment device is characterized in that the multichannel afterloading vagina treatment device comprises an integrally formed treatment device body (1) and an elastic limiting piece (2) arranged on the treatment device body (1), the treatment device body (1) comprises a head part (101), a cylindrical main body part (102) and a rear part (103), the treatment device body (1) is provided with a pin jack hole (3) and a pin jack hole (4) which are sequentially communicated with the head part (101), the main body part (102) and the rear part (103), and the pin jack hole (3) and the pin jack hole (4) are respectively used for plugging in the treatment needle and the treatment tube;
an annular mounting groove (1021) is formed in the circumferential surface of the main body part (102), the elastic limiting part (2) comprises a limiting ring (201) and a limiting plug (202), the limiting ring (201) is fixed in the annular mounting groove (1021), a first limiting hole (2011) is formed in the limiting ring (201) corresponding to the pin inserting hole (3), and the aperture of the first limiting hole (2011) is smaller than the diameter of the treatment needle;
the limiting plug (202) is provided with a second limiting hole (2021) corresponding to the cannula hole (4), and the aperture of the second limiting hole (2021) is smaller than the diameter of the treatment tube;
the limiting plug (202) is arranged on the head part (101) or the rear part (103);
the fixing method comprises the following steps:
step S1: installing a limiting ring (201) in the annular installation groove (1021);
step S2: mounting a stopper (202) to the head (101) or the rear (103);
step S3: when the limit plug (202) is mounted on the head (101), the treatment tube passes through a second limit hole (2021) on the limit plug (202), and the treatment tube penetrates into the treatment device body (1) from the head (101) to the rear part (103);
when the limit plug (202) is arranged on the rear part (103), the treatment tube passes through a second limit hole (2021) on the limit plug (202), and the treatment tube penetrates into the treatment device body (1) from the rear part (103) to the head part (101);
step S4: the treatment needle penetrates into the treatment device body (1) from the rear part (103) to the head part (101), and the treatment needle penetrates through a first limiting hole (2011) in the limiting ring (201).
2. The method for fixing the treatment needle and the treatment tube of the multichannel aftervaginal treatment device as claimed in claim 1, characterized in that a positioning strip (1022) is further arranged in the annular mounting groove (1021), the positioning strip (1022) is parallel to the axial direction of the main body part (102), and a positioning groove (2012) matched with the positioning strip (1022) is arranged on the inner ring of the limiting ring (201);
the step S1 includes: the head (101) of the limiting ring (201) is sleeved on the treatment device body (1), the positioning strip (1022) is matched and fixed with the positioning groove (2012), and the first limiting hole (2011) is aligned with the pin inserting hole (3).
3. The method for fixing the treatment needle and the treatment tube of the multichannel aftervaginal treatment device according to claim 2, characterized in that the positioning bars (1022) are arranged in plurality around the circumference of the main body part (102), and the positioning grooves (2012) are provided in one-to-one correspondence with the positioning bars (1022).
4. The method for fixing the treatment needle and the treatment tube of the multichannel aftervaginal treatment device as claimed in claim 1, characterized in that the head part (101) or the rear part (103) is provided with a mounting groove (1011) for mounting the limit plug (202);
the step S2 includes: and the limiting plug (202) is matched and fixed with the mounting groove (1011).
5. The method for fixing the treatment needle and the treatment tube of the multichannel aftervaginal treatment device according to claim 4, characterized in that the limiting plug (202) comprises an insertion cylinder (2022) matched with the cannula hole (4), and the second limiting hole (2021) is opened on the insertion cylinder (2022);
the step S2 further includes: when the limiting plug (202) is matched with the mounting groove (1011), the inserting cylinder (2022) is matched and fixed with the inserting tube hole (4).
6. The fixing method of the treatment needle and the treatment tube of the multichannel aftervaginal therapy device according to claim 1, characterized in that conical holes (2014) are symmetrically arranged on two sides of the first limiting hole (2011), the smaller ends of the two conical holes (2014) are respectively communicated with two ends of the first limiting hole (2011), and the smaller ends of the two conical holes (2014) are both communicated with the pin inserting hole (3);
the step S3 includes: the treatment needle passes when first spacing hole (2011), the treatment needle by conical bore (2014) of first spacing hole (2011) one side passes first spacing hole (2011), follows first spacing hole (2011) opposite side wear out in conical bore (2014).
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