CN209771125U - Tumor radiotherapy device - Google Patents

Abstract

The utility model discloses a tumor radiotherapy device in the field of medical equipment. The device comprises an equipment body and a treatment bed, wherein a target assembly is arranged in the equipment body, the target assembly is sequentially provided with a base, a target and a bowl positioned between the target and an equalizer from top to bottom, the opening of the bowl faces the target, and a vertical connecting rod is connected between the bowl and the base. For traditional linac, this device passes through isolated target of bowl and equalizer, even electron beam strikes the target, spatters target surface fused tungsten oxide, and the tungsten oxide that splashes this moment also can fall into the bowl, has avoided the equalizer to receive the pollution, has promoted the life of equalizer.

Description

Tumor radiotherapy device

Technical Field

The utility model belongs to the field of medical equipment, specifically a tumor radiotherapy device.

Background

Tumor refers to a new organism formed by local tissue cell proliferation under the action of various tumorigenic factors, and is also called neoplasm because the new organism mostly presents space-occupying blocky protrusions. Generally, tumors are divided into benign tumors and malignant tumors, and the diseases can be cured by surgical resection in the benign tumor stage, but when the malignant tumors are encountered, the diseases are inhibited by killing tumor cells by radiation by using a radiotherapy method.

As shown in fig. 1, the conventional radiotherapy apparatus (Synergy of the type of medical science) generally adopts a traveling wave linear accelerator for radiotherapy, the linear accelerator mainly includes a treatment couch, a pulse adjuster, an electron gun, an accelerating tube, a vacuum system, a deflection magnet, a target, a treatment head, a rotating frame, an AFC servo motor, a magnetron deceleration and tuning tube and a circulator, the target includes a primary collimator, a homogenizer, an ionization chamber and a secondary collimator, and a control path of the linear accelerator is the same as a control path marked by an arrow in fig. 1, and therefore, redundant description is omitted. Although the linear accelerator in the prior art can satisfy basic radiation precision and treatment effect, when the linear accelerator is used for carrying out radiotherapy on a patient, electron beams of an accelerating tube are used for impacting a target assembly.

The existing target assembly is disposed outside the acceleration tube and exposed to air, and the material of the target is typically tungsten. When working with a higher dose, the temperature of the target rises rapidly, and the target is oxidized to form tungsten oxide, the tungsten oxide in the molten state is scattered all around by the impact energy of the electron beam from the acceleration tube, the scattered tungsten oxide may be directly sputtered onto the equalizer facing the target substrate, the tungsten oxide starts to melt at 1100-1250 ℃ according to the physical characteristics of the tungsten oxide, and the tungsten oxide accumulated on the equalizer causes a great reduction in the heat conductivity over time, thereby causing breakage.

SUMMERY OF THE UTILITY MODEL

in order to solve the problems, the utility model aims to prolong the service life of the equalizer.

In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides a tumor radiotherapy device, includes equipment body and treatment bed, this internal target subassembly that is equipped with of equipment, the target subassembly is by last base, target and the bowl that is located between target and the equalizer of being equipped with in proper order under to, and the opening part of bowl is towards the target, is connected with vertical connecting rod between bowl and the base.

The noun explains: the bowl refers to a metal cover with a common rice containing bowl-shaped cross section.

Umbrella ribs: the functional parts are the same as a crank-slider mechanism in the folding umbrella.

The following beneficial effects are produced after the technical scheme is adopted: 1. for traditional linac, this device passes through isolated target of bowl and equalizer, even electron beam strikes the target, spatters target surface fused tungsten oxide, and the tungsten oxide that splashes this moment also can fall into the bowl, has avoided the equalizer to receive the pollution, has promoted the life of equalizer.

2. Compared with the prior art adopting other shapes of metal partition plates, the bowl in the technical scheme has the advantages that the accommodating volume is increased, and the self bearing capacity is increased.

Further, the bowl comprises a bowl opening and a bowl seat which is hollow inside, the bowl opening is gradually contracted along the target to the bowl seat in cross section, and radial check hooks are arranged at two ends of the top of the bowl opening.

by adding the non-return hook, the tungsten oxide falling into the bowl is prevented from jumping out of the bowl opening and splashing into the equalizer when splashed, the tungsten oxide is prevented from flowing back, and the practicability of the device is improved.

Further, be equipped with axial dwang in the bowl mouth, inside the bottom of dwang submerged bowl seat, dwang surface machining had clockwise screw thread, and the welding of dwang top has the circular shape retaining ring.

Through the rotation of dwang self, make the inside cyclone that produces of bowl mouth, produce two benefits at least after the cyclone produces, at first the interior uncooled tungsten oxide of bowl mouth gets rid of to bowl mouth inner wall under the centrifugal force effect that the cyclone produced, and secondly the cooling and the solidification of tungsten oxide have been accelerated to the air current that the rotation of pole body produced, make tungsten oxide glue fast at bowl mouth inner wall.

Furthermore, a rotating ring which carries out spiral curve motion along the rotating rod is arranged between the bowl seat and the stop ring, and the rotating ring is circumferentially connected with umbrella ribs which are spread when rotating.

When the rib carries out the spiral curve motion along with the rotating ring, the rib can strut or restraint according to the different diameters of bowl mouth inner wall, under the repetitive motion of rib, the tungsten oxide of bowl mouth inner wall adhesion is touched evenly fast, simultaneously, takes partial tungsten oxide to the inner wall top bonding of bowl mouth during the rib motion, has strengthened the volume that holds of bowl mouth.

Furthermore, the fixed end of the umbrella rib is connected with the rotating ring, the free end of the umbrella rib is in rigid contact with the inside of the bowl opening, and the hardness of the free end of the umbrella rib is higher than that of the inside of the bowl opening.

The rib is when rotatory with the inside roll-off groove trace of bowl mouth, and the tungsten oxide part of bowl mouth inner wall adhesion is extruded and is gone into the groove trace, and another part falls to the bowl end, and the tungsten oxide that falls to the bowl end is driven by the rib again and is rotated, and the volume of bowl has been increaseed mutually in the change.

Furthermore, an O-shaped sealing ring is sleeved at the joint of the rotating rod and the bowl opening. The tungsten oxide is prevented from falling to the bottom of the bowl and blocking the rotating rod.

further, a thermal sensor is arranged on the surface of the bowl seat and electrically connected with a control system of the equipment body. The time of rotation is controlled by heat power, so that energy is saved, and meanwhile, tungsten oxide is prevented from being knocked down to the homogenizer by the cyclone which rotates endlessly.

Further, be equipped with the motor that the axial was placed in the bowl seat, the output shaft and the dwang of motor are connected, establish ties between motor, inductor and the control system. Through the control system, the motor provides circumferential rotating force, and the control is convenient.

Drawings

FIG. 1 is a prior art control flow diagram;

FIG. 2 is an isometric view of a first embodiment;

FIG. 3 is a full sectional view of the target assembly of FIG. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

Reference numerals in the drawings of the specification include: the device comprises a device body 1, a treatment bed 2, a rotating frame 3, a base 4, a target 5, a bowl 6, an equalizer 7, a connecting rod 8, a check hook 9, a stop ring 10, a rotating ring 11, umbrella ribs 12, a rotating rod 13 and a motor 14.

The operation flow of the prior art is shown in figure 1:

In the prior art, taking Synergy of medical science as an example, a traveling wave linear accelerator is generally adopted for radiotherapy, the linear accelerator mainly comprises a treatment couch 2, a pulse regulator, an electron gun, an accelerating tube, a vacuum system, a deflection magnet, a target 5, a treatment head, a rotating frame 3, an AFC servo motor 14, a magnetron deceleration and tuning tube and a circulator, the target 5 comprises a primary collimator, an equalizer 7, an ionization chamber and a secondary collimator, and the control path of the linear accelerator is the same as the control path marked by an arrow in fig. 1.

The embodiment is basically as shown in the attached figure 1:

As shown in fig. 2, comprises a device body 1 and a treatment couch 2. As shown in the attached figure 3, a target assembly is installed in the equipment body 1, the target assembly is sequentially provided with a base 4, a target 5 and a bowl 6 positioned between the target 5 and an equalizer 7 from top to bottom, and a vertical connecting rod 8 is connected between the bowl 6 and the base 4. The opening part of bowl 6 is towards target 5, and bowl 6 includes bowl 6 mouth and the inside hollow bowl 6 seat of making integratively, and the cross section of bowl 6 mouth is restrainted along target 5 to bowl 6 seat gradually, and radial non return hook 9 has all been welded at the top both ends of bowl 6 mouth.

Placed axial dwang 13 in the 6 mouths of bowl, inside 6 seats of bowl were submerged in to the bottom of dwang 13, dwang 13 surface machining had clockwise screw, and the welding of dwang 13 top has circular shape retaining ring 10. A rotating ring 11 which moves along a rotating rod 13 in a spiral curve is arranged between the bowl 6 seat and the stop ring 10, and umbrella ribs 12 which are expanded when rotating are connected to the rotating ring 11 in the circumferential direction.

The fixed end of the umbrella rib 12 is connected with the rotating ring 11, the free end of the umbrella rib 12 is in rigid contact with the inner part of the bowl 6 opening, and the hardness of the free end of the umbrella rib 12 is higher than that of the inner part of the bowl 6 opening. An O-shaped sealing ring is sleeved at the joint of the rotating rod 13 and the bowl 6.

A thermal sensor is arranged on the surface of the bowl 6 seat and is electrically connected with a control system of the equipment body 1. An axial motor 14 is arranged in the bowl 6 seat, an output shaft of the motor 14 is connected with the rotating rod 13, and the motor 14, the inductor and the control system are connected in series.

The specific implementation process is as follows: when electron beam impact target 5, when spattering target 5 surperficial fused tungsten oxide, the tungsten oxide that splashes this moment also can fall into bowl 6, when tungsten oxide received the effect of gravity and falls to bowl 6 seat surface, the thermal power inductor on bowl 6 seat surface drives motor 14 rotatory, rotatory motor 14 drives swivel becket 11 and rib 12 rotation in proper order through dwang 13, because the cross section of bowl 6 mouth is followed target 5 to bowl 6 seat and is gradually closed up, so when rib 12 upwards clockwise rotation, rib 12 struts gradually, the tungsten oxide of bottom is taken the upper quick cooling by rib 12, until tungsten oxide and the bonding of 6 mouth inner wall of bowl.

When the umbrella ribs 12 rise to be in contact with the stop ring 10, the umbrella ribs 12 reach the maximum stroke, the umbrella ribs 12 idle at the moment to cool tungsten oxide in the bowl 6, the tungsten oxide moves towards the inner wall of the opening of the bowl 6 and is cooled under the action of centrifugal force generated by airflow, and a small part of splashed tungsten oxide is intercepted by the check hook 9.

When all tungsten oxide cooling finished, rib 12 and rotating ring 11 received the downward anticlockwise rotation of action of gravity, and rib 12 constantly takes place the rigid friction with 6 mouthful inner walls of bowl this moment, and to making 6 mouthful inner walls of bowl produce the groove mark, the tungsten oxide of 6 mouthful inner wall adhesions of bowl is touched evenly fast, and simultaneously, rib 12 takes part tungsten oxide to the inner wall top bonding of 6 mouths of bowl when moving, has strengthened the volume that holds of 6 mouths of bowl.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (8)

1. The utility model provides a tumor radiotherapy device, includes equipment body and treatment bed, its characterized in that: the device is characterized in that a target assembly is arranged in the device body, the target assembly is sequentially provided with a base, a target and a bowl positioned between the target and the equalizer from top to bottom, an opening of the bowl faces the target, and a vertical connecting rod is connected between the bowl and the base.

2. A tumor radiotherapy apparatus according to claim 1, wherein: the bowl comprises a bowl opening and a bowl seat which is hollow inside, the cross section of the bowl opening is gradually contracted from a target to the bowl seat, and two ends of the top of the bowl opening are provided with radial check hooks.

3. A tumor radiotherapy apparatus according to claim 2, wherein: the bowl is characterized in that an axial rotating rod is arranged in the bowl opening, the bottom of the rotating rod is immersed in the bowl seat, clockwise threads are machined on the surface of the rotating rod, and a circular stop ring is welded at the top of the rotating rod.

4. A tumor radiotherapy apparatus according to claim 2, wherein: a rotating ring which carries out spiral curve motion along the rotating rod is arranged between the bowl seat and the stop ring, and the rotating ring is circumferentially connected with umbrella ribs which are spread when rotating.

5. An apparatus for radiotherapy of tumors according to claim 4, characterized in that: the fixed end of the umbrella rib is connected with the rotating ring, the free end of the umbrella rib is in rigid contact with the inside of the bowl opening, and the hardness of the free end of the umbrella rib is higher than that of the inside of the bowl opening.

6. A tumor radiotherapy apparatus according to claim 2, wherein: the joint of the rotating rod and the bowl opening is sleeved with an O-shaped sealing ring.

7. An apparatus for radiotherapy of tumors according to claim 6, characterized in that: and a thermal sensor is arranged on the surface of the bowl seat and is electrically connected with the control system of the equipment body.

8. an apparatus for radiotherapy of tumors according to claim 7, characterized in that: the bowl seat is internally provided with a motor which is axially arranged, an output shaft of the motor is connected with the rotating rod, and the motor, the inductor and the control system are connected in series.