CN113018672A - Source applicator and source application system for radiotherapy of anal canal cancer - Google Patents
Source applicator and source application system for radiotherapy of anal canal cancer Download PDFInfo
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- CN113018672A CN113018672A CN202110278493.5A CN202110278493A CN113018672A CN 113018672 A CN113018672 A CN 113018672A CN 202110278493 A CN202110278493 A CN 202110278493A CN 113018672 A CN113018672 A CN 113018672A
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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
- A61N5/1002—Intraluminal radiation therapy
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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
- A61N5/1007—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
Abstract
An applicator for radiotherapy of anal canal cancer comprises a top, an anal canal supporting mechanism and an anal supporting block; the top head is hemispherical; the anal tube supporting mechanism comprises a supporting column fixedly connected with the top head, a plurality of concave parts are arranged on the peripheral side wall of the supporting column, a protruding part is formed between every two adjacent concave parts, a telescopic strip is arranged on the protruding part in a telescopic mode, an installation hole extending along the axial direction is formed in the middle of the supporting column, the installation hole is communicated with a plurality of through holes, the through holes penetrate through the concave parts, and a shell is arranged inside the penetrating end of each through hole; the anus supporting block is fixedly connected with the supporting column, an annular groove extending along the circumferential direction of the supporting column is formed in the anus supporting block, the annular groove penetrates through the side wall of the anus supporting block, a soft film used for sealing the annular groove is arranged in the annular groove, and a jack communicated with the mounting hole is formed in the middle of the anus supporting block. The invention has good stability after being placed in the anal canal of a patient, does not need to use an additional fixing bracket, and can reduce the discomfort of the patient.
Description
Technical Field
The invention relates to the technical field of anal canal cancer treatment, in particular to a source applicator and a source application system for anal canal cancer radiotherapy.
Background
Currently, afterloading radiotherapy has become one of the effective means for treating anal canal cancer. During treatment, the body position of a patient is firstly fixed, and then a radioactive source is sent into the cavity of the patient through the applicator for treatment. The existing applicator is mostly of a columnar structure, can cause the large-area opening of the anal canal of a patient, and has heavier discomfort degree for the patient in the process of placement. In addition, the existing applicators are mostly fixed by using adhesive tapes or brackets, the stability of the adhesive tape fixing mode is poor, and the bracket fixing mode is complex to operate.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the source applicator and the source application system for the radiotherapy of the anal canal cancer, which have good stability after being placed in the anal canal of a patient, do not need to use an additional fixing bracket and can reduce the discomfort of the patient.
In order to achieve the purpose, the invention adopts the specific scheme that: an applicator for the radiotherapy of anal canal cancer comprises a top, an anal canal supporting mechanism and an anal supporting block which are arranged in sequence; the top head is hemispherical; the anal tube supporting mechanism comprises a supporting column fixedly connected with the ejector head, a plurality of concave parts are arranged on the peripheral side wall of the supporting column, a protruding part is formed between every two adjacent concave parts, a telescopic strip is arranged on the protruding part in a telescopic mode, the axis of the telescopic strip is parallel to that of the supporting column, the telescopic direction of the telescopic strip is perpendicular to that of the supporting column, a mounting hole extending along the axial direction is formed in the middle of the supporting column, the mounting hole is communicated with a plurality of through holes, the through holes penetrate through the concave parts, and a shell is arranged inside the penetrating end of each through hole; the anus supporting block is fixedly connected with the supporting column, an annular groove extending along the circumferential direction of the supporting column is formed in the anus supporting block, the annular groove penetrates through the side wall of the anus supporting block, a soft film used for sealing the annular groove is arranged in the annular groove, and a jack communicated with the mounting hole is formed in the middle of the anus supporting block.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: the anus supporting block is provided with a plurality of shunting channels which correspond to and are communicated with the output channel, all the shunting channels are communicated together with a first communicating channel, the annular groove is communicated with a second communicating channel, the anus supporting block is further provided with an input channel, the input channel is provided with an adjusting component, and the adjusting component is used for adjusting the input channel to be communicated with the first communicating channel or the second communicating channel.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: the adjusting assembly comprises an outflow pipe which is rotatably arranged in the input channel, one end of the outflow pipe is fixedly connected with a positioning block, one end of the outflow pipe is sealed by the positioning block, the other end of the outflow pipe is fixedly connected with a connecting plate, an input hole communicated with the outflow pipe is formed in the middle of the connecting plate, a first output hole and a second output hole are formed in the middle of the outflow pipe, the orientations of the first output hole and the second output hole are opposite, and the first output hole is communicated with the first communicating channel or the second output hole is communicated with the second communicating channel in the rotation process of the outflow pipe.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: the outflow pipe is fixedly sleeved with two first sealing rings and two second sealing rings, the first output hole is located between the two first sealing rings, and the second output hole is located between the two second sealing rings.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: the inner portion of the jack is rotatably provided with a rotating pipe, a plurality of through grooves extending along the length direction are formed in the inner wall of the rotating pipe, a friction layer is fixedly arranged at the bottom of each through groove, one end of the rotating pipe is far away from one end of the support column from the jack and extends out of the end, a plurality of locking holes evenly distributed along the circumferential direction are formed in the outer wall of the extending end of the rotating pipe, a locking mechanism is fixedly arranged on the anus support block and comprises a base fixedly connected with the anus support block, a blind hole is formed in the base, a locking rod is slidably arranged in the blind hole, and the locking rod is inserted into the locking hole or is separated from the locking hole in the.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: the inner wall of the jack is embedded with a plurality of balls, the outer wall of the rotating tube is provided with a plurality of rolling grooves extending along the circumferential direction, and one part of the balls extend into the rolling grooves.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: and a spring is connected between the locking rod and the blind end of the blind hole, the locking rod is also fixedly connected with an operating rod, and the operating rod is vertical to the locking rod.
The applicator for the anal canal cancer radiotherapy is further optimized as follows: the locking hole is communicated with a conical guide hole, and the locking rod is fixedly connected with a guide head matched with the guide hole.
The source applying system comprises a radioactive source, a feeding device and the source applicator; the feeding device comprises an installation rod, the radioactive source is embedded in one end of the installation rod, a plurality of sliding strips which are correspondingly matched with the through grooves are fixedly arranged on the peripheral side wall of the other end of the installation rod, and the sliding strips extend along the length direction of the installation rod.
As a further optimization of the above-mentioned delivery system: the installation pole can be dismantled and be connected with the protecting tube, when the installation pole is connected with the protecting tube the radiation source is located the inboard of protecting tube, protecting tube fixedly connected with operating ring.
Has the advantages that: the applicator has good stability after being placed in the anal canal of a patient, does not need to use an additional fixing bracket, and can reduce the discomfort of the patient.
Drawings
FIG. 1 is a schematic diagram of the overall construction of an applicator;
FIG. 2 is a schematic structural view of a support column;
FIG. 3 is a schematic view of the anus support block configuration;
FIG. 4 is a schematic structural view of the adjustment assembly;
FIG. 5 is a schematic structural view of the locking mechanism;
fig. 6 is a schematic view of the structure of the feeding device.
Reference numerals: 1-a top, 2-an anal canal supporting mechanism, 3-an anal supporting block, 4-a supporting column, 5-a depression, 6-a shell, 7-a through hole, 8-a protrusion, 9-a telescopic strip, 10-a cavity, 11-a flexible connection, 12-an output channel, 13-a positioning column, 14-a shunt channel, 15-a first communication channel, 16-a diversion channel, 17-a jack, 18-a through groove, 19-a friction layer, 20-a rotating pipe, 21-a ball, 22-an annular groove, 23-a flexible membrane, 24-a second communication channel, 25-a locking mechanism, 26-a locking hole, 27-a guide hole, 28-an adjusting component, 29-a positioning block, 30-an outflow pipe and 31-a first sealing ring, 32-a first output hole, 33-a second sealing ring, 34-a second output hole, 35-a connecting plate, 36-an input hole, 37-a guide head, 38-a locking rod, 39-an operating rod, 40-a base, 41-a spring, 42-a blind hole, 43-a mounting rod, 44-a positioning hole, 45-a radioactive source, 46-a protective tube, 47-a slide bar, 48-an operating ring and 49-an orientation frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, an applicator for radiotherapy of anal canal cancer comprises a top 1, an anal canal support mechanism 2 and an anal support block 3, which are sequentially arranged.
The plug 1 is hemispherical.
Anal canal supporting mechanism 2 include with top 1 fixed connection's support column 4, be provided with a plurality of depressed parts 5 on support column 4's the week lateral wall, form a protruding portion 8 between two adjacent depressed parts 5, it is provided with telescopic bar 9 to stretch out and draw back on the protruding portion 8, the axis of telescopic bar 9 is parallel to each other with support column 4's axis, telescopic bar 9's flexible direction and support column 4's axis mutually perpendicular, the mounting hole along axial extension is seted up at support column 4's middle part, the mounting hole intercommunication has a plurality of through-holes 7, through-hole 7 link up depressed part 5, the inside of through-hole 7's the end that runs through is provided with shell 6.
The anus supporting block 3 is fixedly connected with the supporting column 4, an annular groove 22 extending along the circumferential direction of the supporting column 4 is formed in the anus supporting block 3, the annular groove 22 penetrates through the side wall of the anus supporting block 3, a soft film 23 used for sealing the annular groove 22 is arranged in the annular groove 22, and a jack 17 communicated with the mounting hole is formed in the middle of the anus supporting block 3.
When in use, the applicator is firstly placed into the anal canal of a patient, specifically, the top head 1 is firstly placed into the anus of the patient and then pushed into the anal canal of the patient, the hemispherical top head 1 can slowly open the anal canal of the patient and reduce the discomfort degree of the patient, when the top head 1 and the anal canal supporting mechanism 2 both enter the anal canal of the patient, the telescopic strip 9 on the protruding part 8 extends out, because the telescopic direction of the telescopic strip 9 is vertical to the axial line of the supporting column 4, the cross-sectional area of the anal canal supporting mechanism 2 can be increased when the telescopic strip 9 extends out, and then the anal canal is in close contact with the anal canal of the patient, so that the effect of supporting the anal canal of the patient is realized, on the other hand, because the sunken part 5 exists, the partial position on the anal canal of the patient can not be completely supported, thereby improving the comfort degree of the patient, in addition, the inner wall of the anal canal of the patient extrudes inwards and the sunken part, The protruding part 8, the telescopic strip 9 and the top head 1 are contacted, and the contact position is complex, so that the top head 1 and the anal tube supporting mechanism 2 can be clamped by using the body tissue of a patient, and the position of the applicator is preliminarily fixed; then, warm liquid is introduced into the annular groove 22, the soft membrane 23 is supported by the warm liquid, the soft membrane 23 is in contact with the perianal tissue of the patient, and the position of the anus supporting block 3 is fixed by using the frictional resistance between the soft membrane 23 and the perianal tissue of the patient, so that the applicator is completely fixed. After the applicator is fixed, the radioactive source 45 can be fed into the support column 4 through the insertion hole 17 and the mounting hole in sequence, and radiotherapy can be started by adjusting the position and the angle of the radioactive source 45.
The applicator has good stability after being placed in the anal canal of a patient, does not need to use an additional fixing bracket, and can reduce the discomfort of the patient.
The specific arrangement of the telescopic strips 9 and the way of introducing warm liquid into the annular groove 22 are as follows: offer the output channel 12 that extends along the length direction of support column 4 on the protruding portion 8, the telescopic strip 9 slides and sets up in output channel 12, be connected through flexible coupling 11 between the bottom of telescopic strip 9 and output channel 12, offer the appearance chamber 10 that is linked together with output channel 12 on the telescopic strip 9, set up a plurality of reposition of redundant personnel passageways 14 that correspond the intercommunication with output channel 12 on the anus supporting shoe 3, all reposition of redundant personnel passageways 14 communicate jointly have first intercommunication passageway 15, ring channel 22 communicates second intercommunication passageway 24, input channel has still been seted up on the anus supporting shoe 3, be provided with adjusting part 28 in the input channel, adjusting part 28 is used for adjusting input channel and first intercommunication passageway 15 or second intercommunication passageway 24 and is linked together. When the telescopic strips 9 need to extend out, the input channel is communicated with the first communication channel 15 through the adjusting assembly 28, then warm liquid is injected into all the diversion channels 14 through the input channel and the first communication channel 15, the warm liquid enters the output channel 12 after passing through the diversion channels 14, the telescopic strips 9 are jacked up, the telescopic strips 9 extend out of the output channel 12, and the soft connection 11 stretches in the process; when it is desired to inject warm liquid into the annular groove 22, the inlet passage is communicated with the second communication passage 24 by the regulating member 28, and then warm liquid is injected into the second communication passage 24 through the inlet passage, and the warm liquid flows into the annular groove 22 after passing through the second communication passage 24. The first communicating channel 15 is communicated with the input channel through a flow guide channel 16. In this embodiment, the warming fluid may be heated saline, and the temperature of the warming fluid matches the body temperature of the patient. Through the adjusting assembly 28, warm and hot liquid can be conveniently and selectively injected into the output channel 12 or the annular groove 22, so that the operation is convenient, simple and fast.
The specific structure of the adjusting assembly 28 is: the adjusting assembly 28 includes an outflow tube 30 rotatably disposed in the input channel, one end of the outflow tube 30 is fixedly connected with a positioning block 29, the positioning block 29 closes one end of the outflow tube 30, the other end of the outflow tube 30 is fixedly connected with a connecting plate 35, an input hole 36 communicated with the outflow tube 30 is formed in the middle of the connecting plate 35, a first output hole 32 and a second output hole 34 are formed in the middle of the outflow tube 30, the first output hole 32 and the second output hole 34 are opposite in orientation, and the first output hole 32 is communicated with the first communicating channel 15 or the second output hole 34 is communicated with the second communicating channel 24 in the rotation process of the outflow tube 30. When the input channel needs to be communicated with the first communication channel 15, the outflow pipe 30 is rotated to communicate the first output hole 32 with the flow guide channel 16, and when the input channel needs to be communicated with the second communication channel 24, the outflow pipe 30 is rotated to communicate the second output hole 34 with the second communication channel 24, so that the operation is simple and rapid.
In order to prevent warm fluid from flowing out of the inlet channel, the outlet pipe 30 is fixedly sleeved with two first sealing rings 31 and two second sealing rings 33, the first outlet hole 32 is located between the two first sealing rings 31, and the second outlet hole 34 is located between the two second sealing rings 33.
In order to improve the accuracy of radiotherapy and avoid the damage of the radiation source 45 to the normal tissues of the patient, the direction of the radiation source 45 needs to be precisely controlled, in order to achieve the effect, a rotating pipe 20 is rotatably arranged inside the insertion hole 17, a plurality of through grooves 18 extending in the length direction are formed in the inner wall of the rotating pipe 20, a friction layer 19 is fixedly arranged at the bottom of each through groove 18, one end of the rotating pipe 20 extends out from one end, far away from the support column 4, of the insertion hole 17, a plurality of locking holes 26 evenly distributed in the circumferential direction are formed in the outer wall of the extending end of the rotating pipe 20, a locking mechanism 25 is fixedly arranged on the anus support block 3, the locking mechanism 25 comprises a base 40 fixedly connected with the anus support block 3, a blind hole 42 is formed in the base 40, a locking rod 38 is slidably arranged in the blind hole 42, and the locking rod 38 is inserted into the locking hole 26 or is separated from the locking hole 26. When the radioactive source 45 is placed, the device for mounting the radioactive source 45 is matched with the through groove 18, then the radioactive source 45 can be driven to rotate by rotating the rotating tube 20, after the radioactive source 45 reaches the required direction, the rotating tube 20 is fixed by using the locking mechanism 25, specifically, the locking rod 38 is pulled out from the blind hole 42, and then the locking rod 38 is inserted into one of the locking holes 26. The position of the device for mounting the radiation source 45 can be fixed by means of the friction layer 19 in a manner that increases the friction.
The specific arrangement of the rotating tube 20 is as follows: a plurality of balls 21 are embedded in the inner wall of the insertion hole 17, a plurality of rolling grooves extending along the circumferential direction are formed in the outer wall of the rotating pipe 20, and a part of the balls 21 extend into the rolling grooves. The ball 21 is rotatably arranged on the inner wall of the insertion hole 17, and the friction force between the rotating pipe 20 and the inner wall of the insertion hole 17 can be effectively reduced by the ball 21, so that the rotating pipe 20 can be conveniently adjusted.
In order to facilitate the operation of the locking rod 38, a spring 41 is connected between the locking rod 38 and the blind end of the blind hole 42, and an operating rod 39 is fixedly connected to the locking rod 38, wherein the operating rod 39 is perpendicular to the locking rod 38. When the locking rod 38 needs to be operated, the operating rod 39 is held and pulled to drive the locking rod 38 to move, the spring 41 is driven to deform during the movement of the locking rod 38, and after the operating rod 39 is released, the spring 41 resets and drives the locking rod 38 to reset. It should be noted that when the spring 41 is in the original length state, the locking lever 38 should be inserted into the locking hole 26.
In order to ensure that the locking rod 38 can be accurately inserted into the locking hole 26, the locking hole 26 is communicated with a conical guide hole 27, and a guide head 37 matched with the guide hole 27 is fixedly connected with the locking rod 38. The guide head 37 can guide the lock rod 38 in cooperation with the guide hole 27.
Based on the above-mentioned applicator, the invention also provides an applicator system comprising a radioactive source 45, a delivery device and an applicator according to claim 5.
The feeding device comprises a mounting rod 43, a radioactive source 45 is embedded in one end of the mounting rod 43, a plurality of sliding strips 47 correspondingly matched with the through grooves 18 are fixedly arranged on the peripheral side wall of the other end of the mounting rod 43, and the sliding strips 47 extend along the length direction of the mounting rod 43. The sliding strip 47 is matched with the through groove 18, the mounting rod 43 can be driven to rotate synchronously through the rotating pipe 30, and the sliding strip 47 can be matched with the friction layer 19 to fix the position of the mounting rod 43.
In order to avoid injury to the patient or the medical staff during the installation of the radioactive source 45, the installation rod 43 is detachably connected with a protection tube 46, the radioactive source 45 is positioned inside the protection tube 46 when the installation rod 43 is connected with the protection tube 46, and the protection tube 46 is fixedly connected with an operation ring 48.
In order to precisely control the direction of the radiation source 45, a directional frame 49 may be disposed on the periphery of the radiation source 45, the directional frame 49 has a box shape, and the directional frame 49 has only one opening, and the opening direction of the directional frame 49 is changed during the rotation of the mounting rod 43 by the rotating tube 30, thereby changing the orientation of the radiation source 45.
The plug 1 can also be fixedly connected with a positioning column 13, the positioning column 13 extends into the mounting hole, and the mounting rod 43 is provided with a positioning hole 44 matched with the positioning column 13.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An applicator for anal canal cancer radiotherapy, which is characterized in that: comprises a top (1), an anal canal supporting mechanism (2) and an anus supporting block (3) which are arranged in sequence;
the plug (1) is hemispherical;
the anal tube supporting mechanism (2) comprises a supporting column (4) fixedly connected with the top (1), a plurality of concave parts (5) are arranged on the peripheral side wall of the supporting column (4), a protruding part (8) is formed between every two adjacent concave parts (5), a telescopic strip (9) is arranged on each protruding part (8) in a telescopic mode, the axis of each telescopic strip (9) is parallel to the axis of the corresponding supporting column (4), the telescopic direction of each telescopic strip (9) is perpendicular to the axis of the corresponding supporting column (4), an installation hole extending in the axial direction is formed in the middle of each supporting column (4), the installation holes are communicated with a plurality of through holes (7), the through holes (7) penetrate through the concave parts (5), and a shell (6) is arranged inside the penetrating end of each through hole (7);
the anus supporting block (3) is fixedly connected with the supporting column (4), an annular groove (22) extending along the circumferential direction of the supporting column (4) is formed in the anus supporting block (3), the annular groove (22) penetrates through the side wall of the anus supporting block (3), a soft film (23) used for sealing the annular groove (22) is arranged in the annular groove (22), and a jack (17) communicated with the mounting hole is formed in the middle of the anus supporting block (3).
2. The applicator according to claim 1, wherein: the protruding part (8) is provided with an output channel (12) extending along the length direction of the supporting column (4), the telescopic strip (9) is arranged in the output channel (12) in a sliding way, the telescopic strip (9) is connected with the bottom of the output channel (12) through a flexible connection (11), a containing cavity (10) communicated with the output channel (12) is arranged on the telescopic strip (9), a plurality of shunting channels (14) which are correspondingly communicated with the output channel (12) are arranged on the anus supporting block (3), all the shunting channels (14) are communicated with a first communicating channel (15) together, the annular groove (22) is communicated with a second communicating channel (24), an input channel is further formed in the anus supporting block (3), an adjusting component (28) is arranged in the input channel, and the adjusting component (28) is used for adjusting the input channel to be communicated with the first communicating channel (15) or the second communicating channel (24).
3. The applicator according to claim 2, wherein: the adjusting assembly (28) comprises an outflow pipe (30) rotatably arranged in the input channel, a positioning block (29) is fixedly connected to one end of the outflow pipe (30), one end of the outflow pipe (30) is sealed by the positioning block (29), a connecting plate (35) is fixedly connected to the other end of the outflow pipe (30), an input hole (36) communicated with the outflow pipe (30) is formed in the middle of the connecting plate (35), a first output hole (32) and a second output hole (34) are formed in the middle of the outflow pipe (30), the first output hole (32) and the second output hole (34) are opposite in orientation, and the first output hole (32) is communicated with the first communication channel (15) or the second output hole (34) is communicated with the second communication channel (24) in the rotation process of the outflow pipe (30).
4. The applicator according to claim 3, wherein: the outflow pipe (30) is fixedly sleeved with two first sealing rings (31) and two second sealing rings (33), the first output hole (32) is located between the two first sealing rings (31), and the second output hole (34) is located between the two second sealing rings (33).
5. The applicator according to claim 1, wherein: a rotating pipe (20) is rotatably arranged inside the jack (17), a plurality of through grooves (18) extending along the length direction are formed in the inner wall of the rotating pipe (20), a friction layer (19) is fixedly arranged at the bottom of each through groove (18), one end of the rotating pipe (20) extends out of one end, away from the supporting column (4), of the jack (17), a plurality of locking holes (26) evenly distributed along the circumferential direction are formed in the outer wall of the extending end of the rotating pipe (20), the anus supporting block (3) is fixedly provided with a locking mechanism (25), the locking mechanism (25) comprises a base (40) fixedly connected with the anus supporting block (3), a blind hole (42) is formed in the base (40), a locking rod (38) is arranged in the blind hole (42) in a sliding mode, and the locking rod (38) is inserted into the locking hole (26) or is separated from the locking hole (26) in the sliding process.
6. The applicator according to claim 5, wherein: the inner wall of jack (17) is gone up to inlay and is equipped with a plurality of balls (21), set up a plurality of rolling grooves that extend along the circumferencial direction on the outer wall of rotating tube (20), during ball (21) partly stretches into the rolling groove.
7. The applicator according to claim 5, wherein: a spring (41) is connected between the locking rod (38) and the blind end of the blind hole (42), the locking rod (38) is also fixedly connected with an operating rod (39), and the operating rod (39) is perpendicular to the locking rod (38).
8. The applicator according to claim 7, wherein: the locking hole (26) is communicated with a conical guide hole (27), and a guide head (37) matched with the guide hole (27) is fixedly connected with the locking rod (38).
9. The source application system is characterized in that: comprising a radioactive source (45), a delivery device and an applicator according to claim 5;
the feeding device comprises an installation rod (43), the radioactive source (45) is embedded in one end of the installation rod (43), a plurality of sliding strips (47) correspondingly matched with the through grooves (18) are fixedly arranged on the peripheral side wall of the other end of the installation rod (43), and the sliding strips (47) extend along the length direction of the installation rod (43).
10. The source application system of claim 9, wherein: the mounting rod (43) is detachably connected with a protective tube (46), when the mounting rod (43) is connected with the protective tube (46), the radioactive source (45) is located on the inner side of the protective tube (46), and the protective tube (46) is fixedly connected with an operating ring (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110278493.5A CN113018672B (en) | 2021-03-16 | 2021-03-16 | Source applicator and source application system for radiotherapy of anal canal cancer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110278493.5A CN113018672B (en) | 2021-03-16 | 2021-03-16 | Source applicator and source application system for radiotherapy of anal canal cancer |
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| Publication Number | Publication Date |
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| CN113018672A true CN113018672A (en) | 2021-06-25 |
| CN113018672B CN113018672B (en) | 2022-10-14 |
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| CN202110278493.5A Active CN113018672B (en) | 2021-03-16 | 2021-03-16 | Source applicator and source application system for radiotherapy of anal canal cancer |
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| CN113018672B (en) | 2022-10-14 |
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