CN213667593U - A collision avoidance device for radiotherapy equipment - Google Patents

Abstract

The utility model relates to an anticollision protection device for radiotherapy equipment, including the frame install solid fixed ring on the frame, gu the fixed ring inboard is equipped with around the rotatory swivel ring of axis of rotation, be equipped with the treatment bedstead in the inner space of swivel ring, install the protection ring that is used for protecting patient on the treatment bedstead, install on the swivel ring and follow the rotatory collimation body of swivel ring, be provided with on the collimation body and be used for preventing collimator on the collimation body with the protection ring collides with protection component in advance. The utility model discloses an anticollision protection device for radiotherapy equipment compact structure through bumping the protection subassembly in advance, avoids collimator and patient to collide mutually, can effectively protect patient, improves radiotherapy's security.

Description

A collision avoidance device for radiotherapy equipment

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to an anticollision protection device for radiotherapy equipment.

Background

The gamma ray radiotherapy system adopts cobalt-60 as a radioactive source, when the radiotherapy system is used for radiotherapy, a radioactive source beam is rotated and focused on a focus of a patient, rotary irradiation is carried out, focus tissues near the rotating focus point are irradiated by maximum dose, and healthy tissues are irradiated by instant and tolerance dose, so that the focus is killed, the healthy tissues around the focus are protected, and the purpose of radiotherapy is achieved. In the radiation treatment process, the treatment couch needs to be moved in three dimensions, the position of the treatment couch is automatically controlled, and the radiation source focus point is positioned on a target point planned by the treatment planning system, so that the position of the treatment couch relative to the radiation source focus point is accurate, and accurate radiation treatment is realized.

Currently, a patient to be treated by a radiotherapy apparatus is fixed on a treatment couch and brought to a proper position during a radiotherapy period. In the radiotherapy equipment in the prior art, in the three-dimensional movement process of a treatment bed, the treatment bed frame and a patient have the possibility of colliding with a collimation body, potential safety hazards exist, and an anti-collision protection device needs to be arranged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anticollision protection device for radiotherapy equipment has solved among the prior art treatment bed and can collide with the collimation body in the motion process and have the problem of potential safety hazard.

The utility model provides a technical scheme that technical problem adopted is: the utility model provides an anticollision protection device for radiotherapy equipment, includes the frame install solid fixed ring on the frame, gu fixed ring inboard is equipped with around the rotatory swivel ring of axis of rotation, be equipped with the treatment bedstead in the inner space of swivel ring, install the protection ring that is used for protecting patient on the treatment bedstead, install on the swivel ring and follow the rotatory collimation body of swivel ring, be provided with on the collimation body and be used for preventing collimator on the collimation body with the protection ring collides with in advance and bumps protection component.

The utility model discloses an among the anticollision protection device for radiotherapy equipment, the protection subassembly of bumping in advance hits piece and regulator including the protection ring that is used for bumping the protection ring in advance, the protection ring hits the piece and sets up just along on the collimation body is rotatory, the protection ring hit the piece have with the protection ring is along radial relative collision portion, collision portion with radial distance between the protection ring passes through the regulator is adjusted.

The utility model discloses an in the anticollision protection device for radiotherapy equipment, the collimater is loaded with the collimater, the collision portion with radial distance between the protection ring is less than the collimater extends inwards one end with radial distance between the protection ring.

In the anti-collision protection device for radiotherapy equipment of the present invention, the protection ring hits the block and is slidably connected with the collimating body and moves along the axial direction of the revolving ring, the protection ring hits the block and includes a first hitting block and a second hitting block which are connected, the first hitting block extends along the axial direction of the revolving ring, the second hitting block extends toward the inner space of the revolving ring, and the included angle between the first hitting block and the second hitting block is greater than 0 ° and less than 180 °; the first collision block and the second collision block respectively serve as collision portions and are respectively opposite to the protection ring in the radial direction through movement.

The utility model discloses an in the collision avoidance device for radiotherapy equipment, first hitting the piece and following the axial extension of gyration ring, the second hits the piece and follows the radial extension of gyration ring.

The utility model discloses an among the anticollision protection device for radiotherapy equipment, be provided with the confession on the collimation body the protection ring hits the piece and follows the axial displacement's of gyration ring guide part, the protection ring hit the piece with guide part sliding connection.

In the anti-collision protection device for radiotherapy equipment of the present invention, the protection ring collision block is provided with a threaded hole, the extending direction of the threaded hole is the same as the moving direction of the protection ring collision block, and the threaded hole is provided in the first collision block and/or the second collision block; the regulator is an external thread component matched with the threaded hole; or the first collision block is provided with an external thread, and the regulator is a nut matched with the external thread of the first collision block.

In the anti-collision protection device for radiotherapy equipment of the present invention, the collimator loaded on the collimating body is a long collimator, one end of the second collision block, which is far away from the first collision block, serves as a collision part, and the collision part moves to a position opposite to the protection ring under the action of the adjuster;

the collimator loaded on the collimating body is a short collimator, the first collision block is deviated to the side surface of the second collision block to be used as a collision part, and the collision part moves to a position opposite to the protection ring under the action of the adjuster.

The utility model discloses an in the anticollision protection device for radiotherapy equipment, the protection ring hits the piece and is in along radial motion and then adjust under the effect of regulator the collision portion with radial distance between the protection ring.

The utility model discloses an among the anticollision protection device for radiotherapy equipment, install micro-gap switch in the protection ring, the protection ring is the protection ring of being made by deformable material.

Implement the utility model discloses an anticollision protection device for radiotherapy equipment has following beneficial effect: the utility model discloses an anticollision protection device for radiotherapy equipment compact structure through bumping the protection subassembly in advance, avoids collimator and patient to collide mutually, can effectively protect patient, improves radiotherapy's security.

Drawings

Fig. 1 is a schematic front view of an anti-collision protection device for radiotherapy equipment according to the present invention;

fig. 2 is a schematic cross-sectional view of a long collimator loaded in the anti-collision protection device for radiotherapy equipment of the present invention;

fig. 3 is a schematic cross-sectional view of the loading short collimator in the anti-collision protection device for radiotherapy equipment of the present invention;

fig. 4 is a schematic side view of the anti-collision protection device for radiotherapy equipment of the present invention;

fig. 5 is a schematic structural view of a protection ring collision block of the anti-collision protection device for radiotherapy equipment of the present invention;

fig. 6 is a schematic cross-sectional view of a protection ring collision block of an anti-collision protection device for radiotherapy equipment according to the present invention.

Detailed Description

The structure of the anti-collision protection device for radiotherapy equipment of the present invention is further described with reference to the accompanying drawings and embodiments:

in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of 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 therefore, should not be construed as limiting the present invention.

As shown in fig. 1, the preferred embodiment of the present invention provides a collision-proof protection device for radiotherapy equipment, which comprises a base 18, wherein a fixing ring 16 is mounted on the base 18, and the fixing ring 16 is stationary. The stationary ring 16 is provided inside with a swivel ring 14 which is rotatable around a swivel axis 23 (see fig. 4) along the inside of the stationary ring 16, i.e. the swivel ring 14 is rotatable around the swivel axis 23. Wherein the fixed ring 16 and the swivel ring 14 are both ring-shaped. The rotating ring 14 has a treatment bed frame 17 in an inner space thereof, a protective ring 15 for protecting a patient is attached to the treatment bed frame 17, and the protective ring 15 is wound from one side to the other side of the treatment bed frame 17, and has a substantially ring shape. A microswitch is installed in the protective ring 15, and when the microswitch is triggered, a signal is generated to cut off power or alarm, and the like, wherein the microswitch includes but is not limited to D2 SW-3H. The protective ring 15 is a protective ring made of a deformable material. The deformable material includes, but is not limited to, an elastically deformable material such as rubber, silicone, plastic, or a bendable deformable material such as copper, aluminum, etc. With the deformable material, the micro-switch within the protective ring 15 can be easily touched.

The slew ring 14 has mounted thereon an alignment body 10 that rotates with the slew ring 14. In particular, two fixed rings 16 and two swivel rings 14 are provided on the machine base 18, the collimating body 10 being spanned between the two swivel rings 14. The inner space of the swivel rings 14 is the inner space which is enclosed by both swivel rings 14 together with the collimating body 10. The collimating body 10 is provided with a pre-crash protection assembly for preventing the collimator on the collimating body 10 from colliding with the protection ring 15. The collimating body 10 cooperates with a collimator to collimate and focus the incident radiation, which is prior art and will not be described in detail herein.

The pre-crash protection assembly includes a protection ring crash block 13 for pre-crash protection ring 15 and a regulator 11. Wherein the protection ring striking block 13 is provided on the collimating body 10 and rotates with the collimating body 10, the protection ring striking block 13 has a striking portion diametrically opposed to the protection ring 15, and a radial distance between the striking portion and the protection ring 15 is adjusted by the adjuster 11.

As shown in fig. 2-3, the collimator body 10 is loaded with collimators, either with long collimators 19 or short collimators 20. The long collimator 19 is a collimator extending long inward, and the short collimator 20 is a collimator extending short inward.

Wherein the radial distance between the collision portion and the protection ring 15 is smaller than the radial distance between the inwardly extending end of the collimator and the protection ring 15. When the collimator body 10 loaded with the collimator interferes with the movement of the treatment bed frame 17, if collision is possible, the protection ring 15 collides with the protection ring collision block 13 firstly, the protection ring 15 triggers a micro switch in the protection ring 15 through deformation, the power supply and/or the alarm of the equipment are cut off, and the treatment is stopped.

The following is a detailed description of specific examples.

Example 1

In the present embodiment, the protection ring striker 13 is slidably connected to the collimator body 10 and moves in the axial direction of the swivel ring 14.

The protection ring collision block 13 includes a first collision block 131 and a second collision block 132 connected to each other, the first collision block 131 extends along the axial direction of the rotating ring 14, the second collision block 132 extends toward the inner space of the rotating ring 14, and an included angle between the first collision block 131 and the second collision block 132 is greater than 0 ° and less than 180 °. The first and second striking blocks 131 and 132 respectively serve as striking portions and are respectively opposed to the protection ring 15 in a substantially radial direction by moving.

For example, when the included angle between the first collision block 131 and the second collision block 132 is greater than 0 ° and less than 90 °, the first collision block 131 moves to a position opposite to the protection ring 15 in the radial direction, and when the collimator body 10 loaded with the collimator interferes with the bed frame 17 and the patient's movement, if the collision is possible, the inner side surface 100 of the first collision block 131 serves as a collision part, and the protection ring 15 collides with the inner side surface 100 of the first collision block 131 first; when the outer side surface 200 of the second striking block 132 is moved to a position opposite to the protection ring 15 in the radial direction, the outer side surface 200 of the second striking block 132 serves as a collision portion, and when the collimator body 10 loaded with the collimator interferes with the bed frame 17 and the patient's movement, if a collision is possible, the protection ring 15 collides with the outer side surface 200 of the second striking block 132 first; when the end of the second striking block 132 away from the first striking block 131 moves to a position opposite to the protection ring 15 in the radial direction, the end 201 of the second striking block 132 away from the first striking block 131 serves as a collision part, and when the collimator body 10 loaded with the collimator interferes with the therapeutic bed frame 17 and the patient's movement, if possible, the protection ring 15 collides with the end 201 of the second striking block 132 first.

For another example, when the included angle between the first collision block 131 and the second collision block 132 is greater than 90 ° and less than 180 °, and the first collision block 131 moves to a position opposite to the protection ring 15 in the radial direction, the inner side surface 100 of the first collision block 131 serves as a collision portion, and when the collimator body 10 loaded with the collimator interferes with the bed frame 17 and the patient movement, if collision is possible, the protection ring 15 collides with the inner side surface 100 of the first collision block 131 first; when the inner side surface 202 of the second striking block 132 is moved to a position opposite to the protection ring 15 in the radial direction, the inner side surface 202 of the second striking block 132 serves as a collision part, and when the collimator body 10 loaded with the collimator interferes with the bed frame 17 and the patient's movement, if the collision is possible, the protection ring 15 collides with the inner side surface 202 of the second striking block 132 first; when the end of the second striking block 132 away from the first striking block 131 moves to a position opposite to the protection ring 15 in the radial direction, the end 201 of the second striking block 132 away from the first striking block 131 serves as a collision part, and when the collimator body 10 loaded with the collimator interferes with the therapeutic bed frame 17 and the patient's movement, if possible, the protection ring 15 collides with the end 201 of the second striking block 132 first.

Preferably, as shown in fig. 4 to 6, the first striker 131 extends in the axial direction of the slewing ring 14, and the second striker 132 extends in the radial direction of the slewing ring 14, i.e., the included angle between the first striker 131 and the second striker 132 is substantially 90 °, i.e., substantially "L" shaped. When the protection ring striker 13 rotates with the collimator body 10, referring to fig. 1, the inner side surface 100 of the first striker 131 (i.e., the surface biased toward the second striker 132) and the free end portion of the second striker 132 (i.e., the end portion 201 of the second striker 132 away from the first striker 131) form the trajectories of the large envelope circle 22 and the small envelope circle 21, respectively. When the first collision block 131 is moved to a position opposite to the protection ring 15 in the radial direction, the inner side surface 100 of the first collision block 131 serves as a collision portion, and when the collimator body 10 loaded with the collimator interferes with the treatment frame 17 and the patient's movement, if a collision is possible, the protection ring 15 collides with the inner side surface 100 of the first collision block 131 first. When the end 201 of the second striking block 132 away from the first striking block 131 is moved to a position opposite to the protection ring 15 in the radial direction, when the collimator body 10 loaded with the collimator interferes with the bed frame 17 and the patient's movement, if a collision is possible, the protection ring 15 collides with the end 201 of the second striking block 132 first.

In a further embodiment, the collimating body 10 is provided with a guide portion 12 for moving the protection ring striking block 13 along the axial direction of the rotating ring 14, and the protection ring striking block 13 is slidably connected with the guide portion 12. The integral protection ring striking block 13 may be slidably connected to the guide portion 12, the first striking block 131 may be slidably connected to the guide portion 12, or the second striking block 132 may be slidably connected to the guide portion 12. The guide portion 12 includes, but is not limited to, a guide groove, a guide hole, a rail, a slide rail, and the like.

The protection ring collision block 13 is a special-shaped nut and is provided with a threaded hole 130, the extending direction of the threaded hole 130 is the same as the sliding direction of the protection ring collision block 13, and the threaded hole 130 is arranged in the first collision block 131 and/or the second collision block 132; the adjuster 11 is a component having an external thread adapted to a threaded hole, including, but not limited to, a threaded lead screw, a screw, and the like, for example. The actuator 11 can only make a rotational movement without moving, so that when the male screw part is rotated, the protection ring collision 13 moves along the axial direction of the swivel ring 14, see fig. 4, that is, the protection ring collision 13 moves left and right. In another embodiment, the first striker 131 has external threads, and the adjuster 11 is a nut that mates with the external threads of the first striker 131. Similarly, the actuator 11 only performs a rotational movement, but does not move, so the first striker 131 moves along the axial direction of the slewing ring 14, see fig. 4, i.e., the protection ring striker 13 moves left and right.

In normal operation, when the collimator loaded on the collimator body 10 is the short collimator 20, the adjuster 11 is rotated to make the end of the first collision block 131 of the protection ring collision block 13 opposite to the protection ring 15, and the track of the large envelope circle 22 formed by the protection ring collision block 13 is acted (see fig. 1), when the collimator body 10 loaded with the short collimator 20 interferes with the movement of the treatment bed frame 17 and the patient, if collision is possible, the protection ring 15 collides with the first collision block 131 of the protection ring collision block 13 first, the protection ring 15 is deformed to trigger the micro switch inside, the power supply and/or alarm of the equipment is turned off, and the treatment is stopped.

In normal operation, when the collimator loaded on the collimator body 10 is the long collimator 19, the adjuster 11 is rotated to make the second collision block 132 of the protection ring collision block 13 opposite to the protection ring 15, and the track of the small envelope circle 21 formed by the protection ring collision block 13 is acted (see fig. 1), when the collimator body 10 loaded with the long collimator 19 interferes with the movement of the treatment bed frame 17 and the patient, if collision is possible, the protection ring 15 collides with the second collision block 132 of the protection ring collision block 13 first, the protection ring 15 is deformed to trigger the micro switch inside, the power supply and/or alarm of the device is cut off, and the treatment is stopped.

Example 2

The difference from the embodiment 1 is that: the protective ring striker 13 is moved radially by the actuator 11 and thus adjusts the radial distance between the impact portion and the protective ring 15, i.e. the protective ring striker 13 is moved towards the collimating body 10 or away from the collimating body 10. The guard ring striker 13 is always diametrically opposed to the guard ring 15, and only moves radially. The actuator 11 may be a driver such as a micro motor or the like. The present embodiment can also achieve the trajectory of the small enveloping circle 21 and the trajectory of the large enveloping circle 22, and the working principle is the same as that of embodiment 1.

It should be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings, but fall within the scope of the appended claims.

Claims (10)

1. The utility model provides an anticollision protection device for radiotherapy equipment, its characterized in that, includes the frame install solid fixed ring on the frame, gu fixed ring inboard is equipped with around the rotatory swivel ring of axis of rotation, be equipped with the treatment bedstead in the inner space of swivel ring, install the protection ring that is used for protecting patient on the treatment bedstead, install on the swivel ring and follow the rotatory collimating body of swivel ring, be provided with on the collimating body and be used for preventing collimator on the collimating body with the protection ring collides with collide with protection subassembly in advance.

2. The anti-collision protection apparatus for radiotherapy equipment of claim 1, wherein the pre-collision protection assembly comprises a protection ring collision block for pre-collision protection ring, the protection ring collision block is disposed on the collimating body and rotates with the collimating body, the protection ring collision block has a collision portion radially opposite to the protection ring, and a radial distance between the collision portion and the protection ring is adjusted by the adjuster.

3. The crash protection device as claimed in claim 2, wherein said collimator body carries thereon a collimator, and a radial distance between said collision portion and said protective ring is smaller than a radial distance between an inwardly extending end of said collimator and said protective ring.

4. The anti-collision protection device for radiotherapy equipment according to claim 2, wherein the protection ring collision block is slidably connected with the collimating body and moves along the axial direction of the revolving ring, the protection ring collision block comprises a first collision block and a second collision block which are connected, the first collision block extends along the axial direction of the revolving ring, the second collision block extends towards the inner space of the revolving ring, and the included angle between the first collision block and the second collision block is greater than 0 ° and less than 180 °; the first collision block and the second collision block respectively serve as collision portions and are respectively opposite to the protection ring in the radial direction through movement.

5. The anti-collision protection device for a radiotherapy apparatus according to claim 4, wherein the first collision block extends in an axial direction of the swivel ring, and the second collision block extends in a radial direction of the swivel ring.

6. The anti-collision protection device for radiotherapy equipment according to claim 4, wherein the collimating body is provided with a guide portion for moving the protection ring collision block along the axial direction of the revolving ring, and the protection ring collision block is slidably connected with the guide portion.

7. The anti-collision protection device for radiotherapy equipment of claim 4, wherein the protection ring collision block is provided with a threaded hole, the extending direction of the threaded hole is the same as the moving direction of the protection ring collision block, and the threaded hole is provided in the first collision block and/or the second collision block; the regulator is an external thread component matched with the threaded hole; or the first collision block is provided with an external thread, and the regulator is a nut matched with the external thread of the first collision block.

8. The anti-collision protection device for radiotherapy equipment according to claim 5, wherein the collimator loaded on the collimator body is a long collimator, one end of the second collision block far away from the first collision block is used as a collision part, and the collision part is moved to a position opposite to the protection ring under the action of the adjuster;

the collimator loaded on the collimating body is a short collimator, the first collision block is deviated to the side surface of the second collision block to be used as a collision part, and the collision part moves to a position opposite to the protection ring under the action of the adjuster.

9. The anti-collision protection device for radiotherapy equipment according to claim 2, wherein the protection ring collision block moves in a radial direction under the action of the adjuster to adjust a radial distance between the collision part and the protection ring.

10. The anti-collision protection device for radiotherapy equipment according to claim 1, wherein the protection ring is internally provided with a micro switch, and the protection ring is made of a deformable material.

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