CN112755409B - A radiation iodine particle protection formula stomach tube for esophagus tumour treatment - Google Patents

Abstract

The invention discloses a radiation iodine particle protective stomach tube for esophageal tumor treatment, which comprises a regulation and control assembly, a stomach tube assembly, a radiation assembly, a housing, a stepping motor, a rotating shaft, a gear, a limiting sleeve, a rack, a sealing cover, a radiation shielding fluid, a piston, a stomach tube body, a flow guide cavity, a support ring, a flow guide hole, an inner catheter, a shielding sleeve, a radiation iodine particle ring and a fluid outer bag.

Description

A radiation iodine particle protection formula stomach tube for esophagus tumour treatment

Technical Field

The invention relates to the technical field of medical instruments, in particular to a radiation iodine particle protective stomach tube for treating esophageal tumor.

Background

There are three conventional ways of treating tumors, namely: surgical resection, chemotherapy, radiotherapy, biological treatment and the like, but the several treatments are not suitable for all tumors, and the conventional radiotherapy has great damage to the normal tissue structure of the human body due to the large radiation area and the large radioactive ray dose penetrating through the human body. Iodine 125 particle (hereinafter referred to as iodine ion) implantation therapy is also an implantation method for treating tumor, however, iodine particles emitting low-energy gamma rays are directly radiated into tumor tissue under the guidance of CT and ultrasound, and the tumor tissue is continuously and maximally destroyed and killed. Compared with the conventional external irradiation treatment, the implantation of the iodine particles under the guidance of CT and ultrasound has significant advantages, namely: the internal radiation ray dose is small, the action time is longer, the treatment positioning is more accurate, the local effect on the tumor is uniform, the radiation radius is as small as about two centimeters, the damage to the surrounding normal tissues is extremely small, and the method is a very good local treatment measure. The effect of treating tumor is more obvious by matching with chemotherapy, and the distant micrometastasis focus can be killed. The local treatment of the tumor by the technology can achieve or approach the effects of operation and other lesion and lesion treatment. For some tumors that recur or have limited metastasis after surgery, iodine particle implantation has significant advantages. In addition, the traditional Chinese medicine composition can be used as a supplementary and synergistic treatment means of conventional radiotherapy, and can achieve better treatment effect. The iodine particle treatment of the tumor can be used as a main means for treating the tumor, and can be used as a preferential treatment method for partial tumors.

According to the above, the iodine particles can be directly implanted into the traditional Chinese medicine without operation to inhibit the growth of the tumor, so that the effect which is the same as or better than that of the conventional treatment is achieved, and the physiological function of the traditional Chinese medicine is kept. For the tumor patients who have metastasized, the iodine particles are selected for implantation therapy, so that the aims of effectively controlling the growth of a metastatic focus, maintaining the functions of organs and relieving pain can be achieved; because of the influence of factors such as physical condition, tumor position and the like, the tumor which can not be removed by operation can be treated by implanting iodine particles. However, in the prior art, when iodine particles are used for treatment, for example, chinese patent publications: an iodine particle stomach tube (publication number: CN 205494666U) for radiotherapy of esophageal tumor can also perform good iodine particle therapy, but can not perform effective radiation shielding or reduce radiation intensity on iodine particles in the process of tube placement or when special clinical needs exist, so that the iodine particle stomach tube is easy to cause serious damage to normal cells in non-treatment areas of a patient body, and then brings complications and sequelae to the patient. Therefore, in view of the above drawbacks, it is necessary to design a radiation-iodine particle-protected gastric tube for esophageal tumor treatment.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a radiation iodine particle protective stomach tube for esophagus tumor treatment, which solves the problems provided by the background technology.

In order to solve the technical problem, the technical scheme of the invention is as follows: a radiation iodine particle protection type stomach tube for esophageal tumor treatment comprises a regulation and control assembly, a stomach tube assembly and a radiation assembly, wherein the regulation and control assembly consists of a housing, a stepping motor, a rotating shaft, a gear, a limiting sleeve, a rack, a sealing cover, radiation shielding fluid and a piston, the stomach tube assembly consists of a stomach tube body, a flow guide cavity, a support ring and a flow guide hole, the radiation assembly consists of an inner conduit, a shielding sleeve, a radiation iodine particle ring and a fluid outer housing, the stomach tube assembly is fixedly arranged on one side of the regulation and control assembly, the stomach tube assembly and an adjusting assembly are connected through internal and external threads, the radiation assembly is fixedly arranged at the bottom of the stomach tube assembly, the radiation assembly and the stomach tube assembly are connected through internal and external threads, the stepping motor is fixedly arranged in the middle of the front end of the housing, and is connected with the housing through bolts, the rotary shaft is fixedly arranged at the rear end of the stepping motor, the rotary shaft is connected with the stepping motor through a coupling, the rotary shaft is rotatably connected with the housing, the gear is fixedly arranged at the middle end of the outer wall of the rotary shaft, the gear and the rotary shaft are integrally formed, the limiting sleeve is fixedly arranged at the middle part of the upper end inside the housing, the limiting sleeve and the housing are integrally formed, the rack is slidably arranged inside the limiting sleeve, the rack and the limiting sleeve are connected in a left-right sliding manner, the rack and the gear are connected in a gear tooth meshing manner, the sealing cover is fixedly arranged at the upper end of the right side inside the housing, the sealing cover is connected with the housing through hot melting, the radioactive shielding fluid is positioned inside the sealing cover, the radioactive shielding fluid is movably connected with the sealing cover, the piston is slidably arranged inside the sealing cover, and the sealing cover are connected in a left-right sliding manner, just piston and rack adopt the hot melt to be connected, the water conservancy diversion chamber be located stomach tube body inside, the water conservancy diversion chamber be the hollow cavity of annular, support ring quantity be a plurality of, the support ring from last to distributing in proper order down in the water conservancy diversion intracavity portion, support ring and stomach tube body adopt the hot melt to be connected, water conservancy diversion hole quantity be a plurality of, the water conservancy diversion hole encircle inside the support ring, the water conservancy diversion hole be circular through-hole, the housing set firmly in the inner catheter outer wall, housing and inner catheter adopt the hot melt to be connected, the radiation iodine particle ring firmly locate the housing outer wall, radiation iodine particle ring and housing adopt the adhesive to be connected, the fluid outer housing set firmly in radiation iodine particle ring outer wall, the fluid outer and radiation iodine particle ring adopt the adhesive to be connected, just fluid outer housing adopt the hot melt to be connected with the housing.

Further, the housing top still set firmly the step motor driver, step motor driver and housing adopt bolted connection, just step motor driver and step motor adopt the signal of telecommunication line connection, the housing rear end still set firmly the battery, battery and housing adopt bolted connection, just the battery adopt the power cord with step motor and step motor driver respectively to be connected.

Furthermore, the housing right side still set firmly the connecting pipe, connecting pipe and housing adopt the hot melt to be connected, connecting pipe middle-end top still set firmly pressure detector, pressure detector and connecting pipe adopt the hot melt to be connected, just pressure detector and battery adopt the power cord to be connected.

Further, the inside upper end of stop collar still set firmly proximity sensor, proximity sensor and stop collar adopt bolted connection, just proximity sensor and step motor driver adopt the signal of telecommunication line connection, proximity sensor and battery adopt the power cord to be connected.

Further, a trigger plate is fixedly arranged on the left side of the rack, and the trigger plate is connected with the rack through bolts.

Further, stomach tube body top still set firmly connection port, connection port and stomach tube body integrated into one piece, stomach tube body left side upper end still set firmly the internal thread pipe, internal thread pipe and stomach tube body integrated into one piece, just internal thread pipe and connecting pipe adopt interior external screw thread to be connected, stomach tube body bottom outside still set firmly the internal thread cover, internal thread cover and stomach tube body integrated into one piece.

Furthermore, the upper end of the outer wall of the inner conduit is fixedly provided with an external thread sleeve, the external thread sleeve and the inner conduit are integrally formed, and the external thread sleeve and the internal thread sleeve are connected by internal and external threads.

Further, fluid outer sack top retaining ring has still set firmly, retaining ring and fluid outer sack adopt the hot melt to be connected, just retaining ring and external screw thread cover integrated into one piece, the inside hole of dodging that still is equipped with a plurality of quantity of retaining ring, the hole of dodging be circular through-hole, just dodge hole and water conservancy diversion hole position one-to-one.

Compared with the prior art, the radiation iodine particle protection type stomach tube for treating the esophageal tumor has the following advantages:

1. firstly, the radiation generated by the radioactive iodine particle ring can cover the target focus, and the radiotherapy of the focus area in the body of a patient is realized.

2. Secondly, by the regulation and control formula radiation protection mechanism, also can shield the parcel with the iodine particle in the intubate process, avoid contacting the internal non-focus area of patient, greatly reduced the radiation damage in non-focus area, reduced patient's pain, and the simple operation that only needs to pass through when treating can realize that the iodine particle exposes, has made things convenient for the treatment, has shortened intubate time, has improved work efficiency and treatment.

3. Finally, due to the adoption of a combined structure, the clinical assembling, disassembling and butt-jointing are convenient, the operation is flexible and convenient, the practicability is expanded, and therefore, the combined type structure has higher popularization and application values.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of a radiation-iodine particle-protected gastric tube for esophageal tumor treatment;

FIG. 2 is a top view of a radiation-iodine particle-protected gastric tube for esophageal tumor treatment;

FIG. 3 is a sectional view in the direction A of a radiation-iodine particle-protected gastric tube for esophageal tumor treatment;

FIG. 4 is a perspective view of a radiation-iodine particle-protected gastric tube for esophageal tumor treatment, FIG. 1;

FIG. 5 is a perspective view of a radiation-iodine particle-protected gastric tube for esophageal tumor treatment, FIG. 2;

FIG. 6 is a perspective view of a radiation-iodine particle-protected gastric tube for esophageal tumor treatment in a separated state, FIG. 1;

FIG. 7 is a perspective view of a separate iodine particle-emitting gastric tube for esophageal tumor treatment, shown in FIG. 2;

FIG. 8 is an enlarged sectional view of the spindle portion;

FIG. 9 is an enlarged cross-sectional view of the inner catheter site;

fig. 10 is a partially enlarged perspective view of the gastric tube body.

The device comprises a regulating and controlling assembly 1, a stomach tube assembly 2, a radiation assembly 3, ahousing 4, a stepping motor 5, a rotating shaft 6, a gear 7, a limiting sleeve 8, arack 9, asealing cover 10, aradioactive shielding fluid 11, apiston 12, astomach tube body 13, aflow guide cavity 14, asupport ring 15, aflow guide hole 16, aninner catheter 17, ashielding sleeve 18, a iodine-emittingparticle ring 19, a fluidouter sheath 20, astepping motor driver 401, astorage battery 402, a connectingpipe 403, apressure detector 404, aproximity sensor 801, atrigger plate 901, a connectingport 1301, an inner threadedpipe 1302, an inner threadedsleeve 1303, an outer threadedsleeve 1701, acheck ring 2001 and anavoidance hole 2002.

The following detailed description will be further described in conjunction with the above-described drawings.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the concepts underlying the described embodiments, however, it will be apparent to one skilled in the art that the described embodiments may be practiced without some or all of these specific details, and in other cases well-known process steps have not been described in detail.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, and fig. 10, a radiation iodine particle protective stomach tube for esophageal tumor therapy includes a regulating component 1, a stomach tube component 2, a radiation component 3, ahousing 4, a stepping motor 5, a rotating shaft 6, a gear 7, a stop collar 8, arack 9, asealing cover 10, aradiation shielding fluid 11, apiston 12, astomach tube body 13, adiversion cavity 14, asupport ring 15, adiversion hole 16, aninner conduit 17, ashielding sleeve 18, a radiationiodine particle ring 19, and a fluidouter housing 20, wherein the stomach tube component 2 is fixedly arranged at one side of the regulating component 1, the stomach tube component 2 is connected with the regulating component 1 by internal and external threads, the radiation component 3 is fixedly arranged at the bottom of the stomach tube component 2, the radiation component 3 is connected with the stomach tube component 2 by internal and external threads, the stepping motor 5 is fixedly arranged at the middle portion of the front end of thehousing 4, step motor 5 andhousing 4 adopt bolted connection, pivot 6 set firmly in step motor 5 rear end, pivot 6 and step motor 5 adopt the coupling joint, just pivot 6 andhousing 4 adopt to rotate and be connected, gear 7 set firmly in pivot 6 outer wall middle part, gear 7 and pivot 6 integrated into one piece, stop collar 8 set firmly in the inside upper end middle part ofhousing 4, stop collar 8 andhousing 4 integrated into one piece,rack 9 cunning locate inside stop collar 8,rack 9 and stop collar 8 adopt side-to-side sliding connection, justrack 9 and gear 7 adopt the tooth meshing to be connected, sealed cowling 10 set firmly in the inside right side upper end ofhousing 4, sealed cowling 10 andhousing 4 adopt hot melt to be connected,radiation shielding fluid 11 be located inside sealed cowling 10, theradiation shielding fluid 11 is movably connected with thesealing cover 10, thepiston 12 is slidably arranged inside thesealing cover 10, thepiston 12 and thesealing cover 10 are in left-right sliding connection, thepiston 12 and therack 9 are in hot-melt connection, thediversion cavity 14 is located inside thegastric tube body 13, thediversion cavity 14 is an annular hollow cavity, thesupport rings 15 are distributed inside thediversion cavity 14 from top to bottom, thesupport rings 15 are sequentially distributed inside thediversion cavity 14 from top to bottom, thesupport rings 15 are in hot-melt connection with thegastric tube body 13, thediversion holes 16 are distributed inside thesupport rings 15 in a surrounding manner, thediversion holes 16 are circular through holes, theshielding sleeve 18 is fixedly arranged on the outer wall of theinner conduit 17, theshielding sleeve 18 is connected with theinner conduit 17 through hot-melt, theradiation iodine particle 19 is fixedly arranged on the outer wall of theshielding sleeve 18, theiodine particle ring 19 is connected with theshielding sleeve 18 through an adhesive, the fluidouter sleeve 20 of the radiation particle is fixedly arranged on the outer wall of theradiation particle 19, and theradiation shielding sleeve 18 is connected with the radiation particle adhesive;

the iodine particle-emitting protection type stomach tube for treating the esophagus tumor has the following functions;

A. during radiotherapy, the radiationiodine particle ring 19 in the radiation assembly 3 covers a target focus, so that radiotherapy on a focus area in a patient body is realized;

B. in the intubation process, in order to avoid exposure of the iodineparticle emitting ring 19 of the gastric tube assembly 2 in the intubation process, the medical staff can operate the stepping motor 5, that is, the stepping motor 5 drives the rotating shaft 6 to drive the gear 7 to rotate, and the gear 7 is in gear tooth meshing connection with therack 9, so that therack 9 can push thepiston 12 to push towards the right side inside thesealing cover 10 under the rotation action of the gear 7, and at the moment, through the driving force of thepiston 12, theradiation shielding fluid 11 inside thesealing cover 10 is guided by theflow guide cavity 14 inside thegastric tube body 13 and supplied to the fluidouter cuff 20, and after theradiation shielding fluid 11 is inside the fluidouter cuff 20, the outer wall of the iodineparticle emitting ring 19 can be further wrapped, and meanwhile, under the matching action of the innerwall shielding sleeve 18, the inner wall of the iodineparticle emitting ring 19 can be covered, so that radiation damage of a non-focus area is greatly reduced, and pain of the patient is reduced;

C. theradiation shielding fluid 11 is a liquid radiation-proof material, so that the radiation shielding fluid can flow under the pushing of thepiston 12, and is convenient to be supplied into the fluidouter casing 20, when thepiston 12 slides to the left, theradiation shielding fluid 11 can also flow back into thesealing cover 10, namely, the radiation shielding on the outer wall of the radiationiodine particle ring 19 is eliminated, and the radiation therapy is realized;

D. theshielding sleeve 18 is made of a solid radiation-proof material and is always positioned on the inner wall of the radiationiodine particle ring 19, so that the radiation can be prevented from penetrating theinner catheter 17 to cause damage to the body of a patient;

E. the regulating and controlling assembly 1, the stomach tube assembly 2 and the radiation assembly 3 are in threaded rotary butt joint with each other, so that the disassembly and the assembly are convenient, the stomach tube assembly 2 is in a contact state with a patient and has no radioactive source, the stomach tube assembly is directly discarded after being disassembled, the regulating and controlling assembly 1 is in indirect contact with the patient, the stomach tube assembly can be recycled without disinfection, and the radiation assembly 3 is internally provided with the radiationiodine particle ring 19, so that the radiation assembly can be reused after disinfection;

astepping motor driver 401 is fixedly arranged at the top of thehousing 4, thestepping motor driver 401 is connected with thehousing 4 through bolts, thestepping motor driver 401 is connected with the stepping motor 5 through an electric signal wire, astorage battery 402 is fixedly arranged at the rear end of thehousing 4, thestorage battery 402 is connected with thehousing 4 through bolts, and thestorage battery 402 is respectively connected with the stepping motor 5 and thestepping motor driver 401 through power wires;

it should be noted that thestepping motor driver 401 can facilitate medical staff to set the rotating speed and the number of turns of the stepping motor 5, so as to realize the controlled injection of the subsequentradioactive shielding fluid 11, and thestorage battery 402 can supply power to the stepping motor 5, thestepping motor driver 401, thepressure detector 404 and theproximity sensor 801, so as to facilitate the use without an external power line;

a connectingpipe 403 is fixedly arranged on the right side of thehousing 4, the connectingpipe 403 is connected with thehousing 4 in a hot melting manner, apressure detector 404 is fixedly arranged at the top of the middle end of the connectingpipe 403, thepressure detector 404 is connected with the connectingpipe 403 in a hot melting manner, and thepressure detector 404 is connected with thestorage battery 402 in a power line manner;

it should be noted that the connectingtube 403 can be in rotary butt joint with the internal threadedtube 1302 on thegastric tube body 13, so that the combination of the regulating and controlling assembly 1 and the gastric tube assembly 2 is realized, the flowing in and out of theradioactive shielding fluid 11 is facilitated, thepressure detector 404 can detect the pressure inside the connectingtube 403, the medical staff can roughly judge the expansion degree of theexternal cuff 20 of the fluid, and when the pressure is found to be abnormal, the medical staff can timely close the stepping motor 5;

the upper end in the limiting sleeve 8 is fixedly provided with aproximity sensor 801, theproximity sensor 801 is connected with the limiting sleeve 8 through a bolt, theproximity sensor 801 is connected with thestepping motor driver 401 through an electric signal line, and theproximity sensor 801 is connected with thestorage battery 402 through a power line;

it should be noted that theproximity sensor 801 can send a signal to the steppingmotor driver 401 after sensing thetrigger plate 901 or thepiston 12, so that the steppingmotor driver 401 can control the stepping motor 5 to stop working conveniently, and stroke control of thepiston 12 sliding left and right is realized;

atrigger plate 901 is fixedly arranged on the left side of therack 901, and thetrigger plate 901 is connected with therack 9 through bolts;

it should be noted that after thetrigger plate 901 is moved to the detection range of theproximity sensor 801, theproximity sensor 801 is convenient to perform sensing triggering;

the top of thestomach tube body 13 is further fixedly provided with a connectingport 1301, the connectingport 1301 and thestomach tube body 13 are integrally formed, the upper end of the left side of thestomach tube body 13 is further fixedly provided with an internal threadedtube 1302, the internal threadedtube 1302 and thestomach tube body 13 are integrally formed, the internal threadedtube 1302 and the connectingtube 403 are connected through internal and external threads, the outer side of the bottom end of thestomach tube body 13 is further fixedly provided with an internal threadedsleeve 1303, and the internal threadedsleeve 1303 and thestomach tube body 13 are integrally formed;

it should be noted that theconnection port 1301 facilitates the connection of thegastric tube body 13 with an external liquid supply pipeline, so that the conventional nutrient solution or liquid diet of thegastric tube body 13 is supplied to the stomach of a patient, the internal threadedtube 1302 can be in rotational butt joint with theconnection tube 403, the internal threadedsleeve 1303 can be in rotational butt joint with the external threadedsleeve 1701, and then the ingenious combination of the regulating and controlling assembly 1, the gastric tube assembly 2 and the radiation assembly 3 is realized;

the upper end of the outer wall of theinner conduit 17 is fixedly provided with anexternal thread sleeve 1701, theexternal thread sleeve 1701 and theinner conduit 17 are integrally formed, and theexternal thread sleeve 1701 and theinternal thread sleeve 1303 are connected by internal and external threads;

it should be noted that theexternal thread sleeve 1701 can rotate with theinternal thread sleeve 1303 at the bottom of thegastric tube body 13, so that the combination of the gastric tube body 2 and the radiation assembly 3 is realized, and meanwhile, the reverse rotation is convenient for detachment, and the clinical practicability is expanded.

The top of the fluidouter sleeve 20 is fixedly provided with aretaining ring 2001, the retainingring 2001 is connected with the fluidouter sleeve 20 in a hot melting mode, the retainingring 2001 and theexternal thread sleeve 1701 are integrally formed, a plurality ofavoidance holes 2002 are further arranged inside the retainingring 2001, theavoidance holes 2002 are circular through holes, and theavoidance holes 2002 correspond to the diversion holes 16 in a one-to-one mode;

it should be noted that theretaining ring 2001 plays a positioning role, so that theflow guide hole 16 on thegastric tube body 13 is conveniently butted with theavoidance hole 2002, thesubsequent shielding fluid 11 for the radioactive substance can conveniently enter and exit through theflow guide hole 16 and theavoidance hole 2002, and theexternal cuff 20 for the fluid can conveniently expand or contract. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be also considered as the protection scope of the present invention.

Claims (4)

1. A radiation iodine particle protection type stomach tube for esophageal tumor treatment is characterized by comprising a regulation and control assembly, a stomach tube assembly and a radiation assembly, wherein the regulation and control assembly consists of a housing, a stepping motor, a rotating shaft, a gear, a limiting sleeve, a rack, a sealing cover, radiation shielding fluid and a piston, the stomach tube assembly consists of a stomach tube body, a flow guide cavity, a support ring and a flow guide hole, the radiation assembly consists of an inner conduit, a shielding sleeve, a radiation iodine particle ring and a fluid outer housing, the stomach tube assembly is fixedly arranged on one side of the regulation and control assembly, the radiation assembly is fixedly arranged at the bottom of the stomach tube assembly, the stepping motor is fixedly arranged in the middle of the front end of the housing, the rotating shaft is fixedly arranged at the rear end of the stepping motor, the rotating shaft is rotatably connected with the housing, the gear is fixedly arranged at the middle end of the outer wall of the rotating shaft, the stop collar set firmly in the inside upper end middle part of housing, the rack cunning locate inside the stop collar, just rack and gear adoption tooth engagement be connected, the sealed cowling set firmly in the inside right side upper end of housing, radiation shield fluid be located inside the sealed cowling, the piston cunning locate inside the sealed cowling, just piston and rack adopt the hot melt to be connected, the water conservancy diversion chamber be located inside the stomach tube body, support ring quantity be a plurality of, the support ring from last to distributing in proper order down inside the water conservancy diversion chamber, water conservancy diversion hole quantity be a plurality of, the water conservancy diversion hole encircle inside the support ring, the shield cover set firmly in the inner catheter outer wall, the radiation iodine particle ring fix in the shield cover outer wall, fluid outer sack set firmly in radiation iodine particle ring outer wall, just fluid outer sack and shield cover adopt the hot melt to be connected, the housing right side still set firmly the connecting pipe, connecting pipe middle-end top still set firmly pressure detector, just pressure detector and battery adopt the power cord to be connected, stomach tube body top still set firmly connection port, stomach tube body left side upper end still set firmly the internal thread pipe, just internal thread pipe and connecting pipe adopt interior external screw thread connection, stomach tube body bottom outside still set firmly the internal thread cover, interior pipe outer wall upper end still set firmly the external screw thread cover, just external screw thread cover and internal screw thread cover adopt interior external screw thread connection, fluid overcoat bag top still set firmly the retaining ring, just retaining ring and external screw thread cover integrated into one piece, retaining ring inside still be equipped with the hole of dodging of a plurality of quantity, just dodge hole and water conservancy diversion hole position one-to-one.

2. The radiation iodine particle protection type gastric tube for esophageal tumor treatment as claimed in claim 1, wherein a step motor driver is further fixed on the top of the housing, the step motor driver is connected with the step motor through an electrical signal line, a storage battery is further fixed on the rear end of the housing, and the storage battery is respectively connected with the step motor and the step motor driver through power lines.

3. The radiation iodine particle protection type gastric tube for esophageal tumor treatment as claimed in claim 2, wherein a proximity sensor is further fixed at the upper end inside the stop collar, the proximity sensor is connected with the step motor driver through an electric signal line, and the proximity sensor is connected with the storage battery through a power line.

4. The radiation iodine particle protective stomach tube for esophageal tumor treatment as claimed in claim 1, wherein a trigger plate is further fixed on the left side of said rack.

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