JPH0871168A - Positioning device for the head for radiotherapy or the like - Google Patents

Abstract

PURPOSE: To provide the positioning device for the head for radiotherapy or the like with which the head can be fixed at a certain position in the case of radiotherapy to the head and the treating effect of radioactive rays can be improved by exposing the radioactive rays to the position of a diseased part exactly without causing any errors such as deviation. CONSTITUTION: This device is provided with a treatment bed 14 equipped with a surface for mounting a patient while laying it on the back and a frame device 18 equipped with a frame member 16 freely movable in a direction X to be the height direction of the patient lying on the back on the treatment bend 14, direction Y to be a direction connecting both the shoulders and direction Z to be the direction of a glance. Further, this device is provided with a mouth piece 20 supported by any frame member 16 and turned downward, driving part for moving the mouth piece 20 in the direction Z at least, and control part 24 for specifiedly storing the position of the mouth piece 20 as X, Y and Z coordinate positions and for controlling the feeding of the mouth piece 20 into the mouth of the patient at need.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head and neck positioning device for radiotherapy and the like.

[0002]

2. Description of the Related Art Conventionally, in radiation therapy for treating lesions such as malignant tumors by irradiating high energy radiation from the outside of the body, it is possible to accurately irradiate lesions while avoiding the influence on normal tissues as much as possible. Positioning and fixing of the is a major factor that enhances the treatment results. In particular, in a head and neck lesion, it is necessary to fix and position the head and neck of a patient lying on a treatment bed so as not to move, and in actual treatment, one treatment time is 3 times.
It takes about 10 minutes to about 10 minutes, and the number of treatments becomes about 20 times a month. It is important to accurately position and fix the head and neck of the patient for each treatment.

In order to position and fix the head and neck on the treatment bed, (1) a fixing tape or a fixing band is locked and fixed from the head and neck of a patient lying on the treatment bed to the treatment bed.
(2) A facial mold is molded from the patient's head with a shell used for a cast or the like, and the head and neck is fixed while the head of the supine patient is supported on the bed so as to fit the face. (3) A mouthpiece is hung vertically from the end of a support rod that horizontally protrudes from a tripod or the like installed on the upper surface of the treatment bed, and this is bitten by a patient lying on the treatment bed to fix the head and neck. The method is being used.

[0004]

[Problems to be Solved by the Invention] However, in the case of using the fixing tape, the fixing belt, and the facial mold formed of shell, in any case, since the skin is locked, the skin is displaced from the skull. It takes time to position and fix the neck. Also, the head and neck can be fixed at a fixed position by biting the mouthpiece on the patient, but since the mouthpiece is attached to the end of the support rod horizontally supported on the tripod, the installation position of the tripod and the protrusion of the support rod An error occurs in the direction, etc., and it takes time to position the mouthpiece at a fixed position in the spatial coordinates for each treatment. Therefore, even if any of the above means is used, it takes time to position and fix the head and neck, it is not possible to accurately irradiate the lesion of the head and neck due to misalignment, or it is necessary to adjust the irradiation direction, and the treatment results There was a problem such as not being able to improve.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to always place a mouthpiece on a therapeutic bed on which the patient lies on a fixed position of spatial coordinates close to the mouth of the patient. The head and neck of the patient undergoing treatment can be fixed and held in a fixed position while setting and meshing, there is no error such as misalignment, and radiation can be accurately applied to the focus position of the head and neck with each treatment. It is an object of the present invention to provide a positioning device for the head and neck when performing radiation treatment or the like, which can dramatically improve the treatment results.

[0006]

In order to achieve the above object, the invention according to claim 1 has a treatment bed 14 provided with a surface 12 for placing a patient in a supine position, and a treatment bed 14 on the treatment bed 14. A frame device 18 having a frame member 16 that is movable in the X direction, which is the height direction of the patient in the supine state, the Y direction, which is the direction connecting the shoulders, and the Z direction, which is the direction of the line of sight, A mouthpiece 20 supported by one of the frame members 16 and attached downward is provided, and a drive unit 22 for moving the mouthpiece 20 in at least the Z direction is provided. Further, the mouthpiece 20 is provided. Position for X-, Y-, and Z-coordinates, which is stored, and, if necessary, a control unit 24 for controlling the mouthpiece 20 to be fed into the mouth of a patient in a supine position. Composed of the positioning device 10 of the parts.

Further, in the invention according to claim 2, guide rails 30, 30 are attached to both sides in the longitudinal direction of the treatment bed 14, and the frame device 18 is slidable on the guide rails 30, 30. It may be mounted on the substrate and moved in the X direction.

Further, in the invention according to claim 3, the frame device 18 has a U-shaped frame shape in which the line-of-sight surface of the supine patient is open when the supine patient bites the mouthpiece 20. The rectangular first opening 32 may be formed, and the U-shaped frame-shaped second opening 34 may be formed on both side surfaces on which the temple side of the patient is located.

Further, in the invention according to claim 4, the frame device 18 is provided on the base frames 36 and 36 which slide on the guide rails 30 and 30 in the X direction, and on the upper surfaces of the base frames 36 and 36. , The base frame 36,
36 while slidingly moving in the Y direction on the guide rail 30,
Vertical frame 3 provided in a direction substantially vertical to 30
8 and 38, and a vertical movement frame 40 slidably provided in the Z direction with respect to the vertical frame 38, 38 and having the mouthpiece 20 mounted downwardly may be provided.

Further, in the invention according to claim 5, a U-shaped frame frame 72 slidable in the X direction is provided in the vertical movement frame 40, and the mouthpiece 20 is provided at an end of the U-shaped frame frame 72. It may be attached.

Further, in the invention according to claim 6, the mouthpiece 20 has a supporting portion 104 attached to the frame member 72, and is fixed to the lower end side of the supporting portion 104, and is kneaded into the mouth of the patient. Hardened material 1
06, the support part 104 forms a hollow communication part 112 in the longitudinal direction, has a communication port 110 communicating with the communication part 112 on the upper side and communicating with the outside air, and the lower end side in the mouth of the patient. In the above, the breathing port 114 communicating with the communicating portion 112 may be provided.

In the invention according to claim 7, the base frames 36, 36 may be provided so as to be attachable to and detachable from the therapeutic bed 14.

[0013]

When radiotherapy for the head and neck of a patient is performed by the positioning device for the equal cervix during radiotherapy according to the present invention, a frame device is installed on the upper end surface of the treatment bed, and the head is placed on the frame device. The patient is supine with the neck facing and a pillow is laid on the underside of the head and neck. Place each frame member of the frame device so that the mouthpiece is located above the mouth of this patient.
Y direction, which is the direction of both shoulders of the patient, X which is the direction of height of the patient
And slide the mouthpiece in the direction to position the mouthpiece above the patient's mouth. Next, the mouthpiece is fed into the mouth of the patient for engagement while the drive unit that moves the mouthpiece in the Z direction, which is the line of sight of the patient, is controlled by the control unit. The head and neck can be positioned and fixed so as not to move, and the focus position of the head and neck can be accurately irradiated with radiation, and the results of radiation therapy can be improved. Further, the irradiation area of the radiation can be specified by combining the head and neck positioning device and the film projection method, it is not necessary to mark the treatment area on the skin surface, and the mental distress of the patient can be alleviated.

Further, the frame device is provided with a base frame engaged with guide rails provided on both sides of the therapeutic bed and an upper surface of the base frame, and the guide rails are slidably moved in the Y direction on the base frame. A vertical frame provided substantially in the vertical direction, and a vertical frame movably provided in the Z direction with respect to the vertical frame and having the mouthpiece mounted downward. ing. Further, the vertical movement frame is provided with a U-shaped frame frame that is slidable in the X direction, the mouthpiece is attached to the end of the U-shaped frame frame, and the vertical movement frame is automatically moved in the Z direction. In addition, the U-shaped frame is automatically moved in the X direction to automatically identify and store the spatial coordinates of each mouthpiece on the treatment bed, and the data is stored by the control unit while the mouthpiece is taken out as necessary. Is sent into the mouth of the patient, the head and neck of the patient can be positioned and fixed promptly and without any trouble. In addition, the mouthpiece has a supporting portion attached to the frame member, and is provided with a paste-like hardened body that is fixed to the lower end side of the supporting portion and is bitten into the mouth of the patient, and the supporting portion has a longitudinal direction. A hollow communication part is formed on the upper side, and a communication port communicating with this communication part on the upper side is communicated with the outside air, and a lower end side is provided with a breathing port communicating with this communication part in the mouth of the patient. You can breathe through the mouth while the mouthpiece is engaged, and you can easily perform radiation therapy even if you have a stuffy nose. Further, since the base frame is attached to and detached from the treatment bed, the frame device can be easily removed to treat other parts in radiation treatment other than the head and neck.

[0015]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a head and neck positioning device (hereinafter, abbreviated as head and neck positioning device) 10 according to an embodiment of the present invention during radiotherapy or the like. As is clear from the figure, the head and neck positioning device 10
Treatment bed 14 with surface 12 for placing the patient in the supine position
And the X direction, which is the height direction of the patient in the supine state on the treatment bed 14, and the Y direction, which is the direction connecting both shoulders,
A frame device 18 having a frame member 16 that is movable in the Z direction, which is the direction of the line of sight, is provided, and a mouthpiece 20 that is supported by one of the frame members 16 and that is attached downward is provided. The mouthpiece 20
Is provided with a drive unit 22 for moving the mouthpiece in at least the Z direction, and further, the position of the mouthpiece 20 is changed to X, Y, Z.
It is provided with a control unit 24 for specifying and storing as a coordinate position, and for sending and controlling the mouthpiece 20 into the mouth of the patient in the supine state, if necessary.

A feature of the present invention is that a frame device mounted on a treatment bed is provided with a frame member that is spatially movable with respect to a patient lying on the treatment bed, and a mouthpiece attached to the frame member is treated. Radiation therapy can be performed while the patient's head and neck are always positioned and fixed stably by sending it to the mouth of the patient lying on the bed and engaging the mouthpiece, and the space of the mouthpiece at the time of the first radiation therapy. While memorizing the target coordinates, the head and neck can be positioned and fixed promptly during the next treatment, and a serious situation due to erroneous irradiation during treatment can be reliably avoided, ensuring safety and reducing the number of therapists' time. It's about saving money.

As shown in FIGS. 1, 2 and 3, a therapeutic bed 1
The reference numeral 4 designates a rectangular base 28 supported by legs 26 movable toward a radiation accelerating device (not shown). Guide rails 30 are provided on both side surfaces in the longitudinal direction of the base 28 at positions near the ends. , 30 are fixed. The frame device 18 is slidably mounted on the guide rails 30 and 30, so that the frame device 18 can be guided and moved in the X direction, which is the height direction of the patient placed on the treatment bed 14 in the supine position. Become.

The frame member 16 of the frame device 18
When the supine patient bites the mouthpiece 20, the U-shaped frame-shaped or rectangular first opening 32 is formed on the surface of the supine patient in the line-of-sight direction as shown in FIG. In addition, a U-shaped frame-shaped second opening 34 is formed on both side surfaces of the patient on the temple side, as shown in FIGS. 2 and 3. As a result, radiation can be accurately emitted from the first and second openings 32 and 34 toward the lesion of the head and neck of the patient without obstacles.

The frame member 16 of the frame device 18
Is the guide rails 3 on both sides of the bed 28 of the treatment bed 14.
Base frames 36 and 36 that engage with 0 and 30 and slide in the X direction, and a direction that connects the shoulders of the patient on the base frames 36 and 36 and is provided on the upper surfaces of the base frames 36 and 36. Guide rail 3 while slidingly moving in the Y direction
Vertical frame frames 38, 38 provided in a substantially vertical direction with respect to 0 and 30, and Z with respect to the vertical frame frames 38, 38.
The vertical movement frame 40 is provided so as to be slidable in any direction and has the mouthpiece 20 mounted downward.

As shown in FIGS. 2 and 3, the base frame 3
Reference numerals 6 and 36 denote oblong rectangular base plates 42 and 42 whose longitudinal direction is along the guide rails 30 and 30, and the base plates 42.
Grooved guide rollers 44, 44 which are axially mounted at upper and lower positions on the inner surface side near both ends. As shown in FIG. 7, ridges 46, 46 are provided on the upper and lower surfaces of the guide rails 30, 30. The ridges 46, 46 have grooved guide rollers 44, 44.
While engaging with each other, the base frames 36, 36 slide and move.

Further, stoppers 48, 48 for screwing the guide frames 30, 30 to the base frames 36, 36 for fixing the base frames 36, 36 in a fixed position are screwed to the base frames 36, 36. Further, both ends of a connecting plate 50 which is arranged to intersect with the upper surface of the bed 28 of the therapeutic bed 14 are fixed to the upper surfaces of the base frames 36, 36 on the end side, and the upper surface of the connecting plate 50 has a longitudinal direction thereof. Is provided with a guide rail 52. As a result, the frame device 18 is easily installed on the treatment bed 14 while engaging the grooved guide rollers 44, 44 of the base frames 36, 36 with the upper and lower surfaces of the guide rails 30, 30 on both sides of the treatment bed 14. Can be used to treat the patient's head and neck, and the frame device 18 can be used during radiotherapy other than head and neck
Can be removed and treated. The base frames 36, 36
Means that the guide rails 30, 30 are attached to the upper and lower grooved rollers 44, 44.
However, the present invention is not limited to this, and a V-shaped guide rail may be provided on the side of the treatment bed and a V-shaped guide groove may be provided on the base frame to engage with each other.

As shown in FIGS. 1, 2 and 3, on the upper surface of the guide rail 52 of the connecting plate 50, there is a guide roller 56 on which a hollow machine frame 54 of substantially the same length is brought into contact with the guide rail 52. 5
It is mounted so as to be movable in the Y direction while being guided by 6. The hollow machine frame 54 is provided with stoppers 58, 58 that press-contact the guide rail 52 and lock the hollow machine frame 54. In addition, at a substantially central position on the upper surface of the hollow machine frame 54,
An L-shaped mounting plate 60 is fixed toward the bed, and a pad 62 for abutting the patient's crown on the vertical surface of the mounting plate 60 is fixed.

The vertical frame frames 38, 38 are formed into a groove frame having an inner surface open, and are provided upright at both ends of the hollow machine frame 54. A vertical movement frame 40 is provided at a position close to the upper end on the inner surface side of the vertical frame 38, and the mouthpiece 20 is supported downward at the end of the vertical movement frame 40 on the therapeutic bed 14 side. As shown in FIG. 3, the drive unit 22 that drives the up-and-down moving frame 40 to move the mouthpiece 20 in the Z direction includes one vertical frame 3
A first motor 64, such as a pulse motor, is provided at a lower position on the outer surface side of 8. And the vertical frame 3
8 and 38 are screw shafts 66 and 66 that are pivotally supported so as to interlock with the first motor 64, and are fitted into the vertical frame frames 38 and 38 while being screwed onto the screw shafts 66 and 66. Screw metals 68, 68 that move up and down are provided, and the screw metals 68, 68 are fixed to both side surfaces of the vertical moving frame 40.

As shown in FIGS. 2 and 3, control units 24 and 24 for controlling the first motor 64 of the drive unit 22 are provided at upper positions on the outer surface sides of the vertical frame frames 38 and 38, respectively. The first motor 64 is normally or reversely rotated while operating any one of the control units 24, 24, and the first motor 64 and the screw shafts 66, 66 in the vertical frame 38, 38 are interlocked with each other to move the vertical movement frame 40. It is moved up and down in the Z direction. It should be noted that the control units 24, 24 use the vertical frame 38, 38.
However, the present invention is not limited to this, and an independent control panel may be installed to control each drive unit in conjunction with a computer or the like. The control unit includes a CPU as a central processing unit, a storage unit for specifying and storing the position of the mouthpiece as X, Y, Z coordinate positions, and a comparison unit for comparing the storage position stored by the storage unit with the original position. A drive control unit for supplying stored information based on the comparison data to control the mouthpiece is provided. Then, if necessary, this mouthpiece is fed into the mouth of the patient in a supine state and controlled.

Therefore, when the head and neck lesions of the patient are to be treated by radiation, as shown in FIG. 1, the bed 2 of the treatment bed 14 is used.
The head M is directed to the frame device 18 on the upper surface of the patient 8, the patient M is supine, and the pillow P is laid on the lower surface of the head N. The stoppers 58, 58 of the hollow machine frame 54 mounted on the guide rails 52 of the connecting plates 50 of the base frames 36, 36 so that the mouthpiece 20 is located above the mouth of the patient M.
While moving the hollow machine frame 54 while moving the hollow machine frame 54, slide the vertical frame 38, 38 standing on the hollow machine frame 54 in the Y direction, and place the mouthpiece 20 at a position above the center line of the patient. The hollow machine frame 54 is locked by the stoppers 58, 58.

Next, the stoppers 48, 48 of the base frames 36, 36 are loosened to slide the base frames 36, 36 in the X direction along the guide rails 30, 30 to move the mouse to a position above the patient's mouth. Place the piece 20 and use the stoppers 48, 48 to connect the base frames 36, 36 to the guide rail 3
It locks at 0 and 30. After that, the vertical frame 38, 3
8 controls the vertical movement frame 4
0 is lowered, and the mouthpiece 20 is inserted into the mouth of the patient to engage with the patient. At this time, the pad 62 fixed to the hollow machine frame 54 is also closely attached to the top of the head and neck H to hold the head and neck H of the patient. Positioning and fixing can be performed, radiation can be accurately applied to the lesion position of the head and neck H, and the result of radiotherapy can be improved.

In the embodiment, the vertical movement frame 40
Is a vertical substrate 7 fixed so as to face the inner surfaces of the screw metals 68, 68 fitted in the vertical frame 38, 38.
0 and 70, and the U-shaped frame 72 slidably provided on the vertical substrates 70 and 70 in the X direction.

As shown in FIGS. 1 and 5, a U-shaped frame 7
Racks 76, 76 are engraved on the lower surfaces of the two side frames 74, 74. The vertical substrates 70, 70 have vertical rotation shafts 78, 78 mounted at upper and lower positions near one end thereof, so that the upper rotation shaft 78 holds the pressing rollers 8 of the side frames 74, 74.
0 and 80 are fixed, and both side frames 74 and 7 are attached to the lower rotary shaft 78.
Pinions 82, 82 meshing with the rack 76 on the lower surface of No. 4 are fixed. In addition, at the upper position near the other ends of the vertical substrates 70, 70, an upper rotary shaft 84 is mounted so as to support both side frames 7.
The pressing rollers 86, 86 of Nos. 4, 74 are fixed, and the receiving rollers 88 on the lower surfaces of the side frames 74, 74 are further provided at the lower position.
88 is directly supported by the vertical substrates 70, 70.

Further, as shown in FIG. 3, the vertical movement frame 4
On the side of the vertical frame 38 where the drive unit 22 for moving 0 in the Z direction is provided, a second motor 90 including a pulse motor or the like is installed on the outer surface of the vertical substrate 70, and a speed reducer that works in conjunction with the second motor 90. The pinion 82, 8 in 92
The lower rotary shaft 78 which fixes 2 is interlocked. The second motor 90 is connected so that it can be controlled by the control units 24, 24 provided on the vertical frame 38, 38 like the first motor 64.

As a result, one of the control units 24, 24
While rotating the second motor 90 forward and backward, the pinion 82,
The base frame 36, 36 is fixed to the guide frames 30, 30 by sliding the U-frame frame 72 in the X direction by the engagement of the racks 82, 74 on both side frames 74, 74 of the U-frame frame 72 with each other. In this state, the mouthpiece 20 can be automatically moved and adjusted in the X direction.

As shown in FIGS. 2, 3 and 5, the mounting portion 96 of the mouthpiece 20 is fixed at a substantially central position on the lower surface of the end frame 94 on the side of the therapeutic bed 14 of the U-shaped frame 72. ing. This mounting portion 96 has a U-shaped frame 7
A recess 98 formed in the vertical direction on the inner surface side of 2 and a recess 9
A shaft piece 100 that horizontally protrudes inside 8 and a locking clip 102 that surrounds the recess 98 and that attaches and detaches the mouthpiece are provided.

As shown in FIGS. 5 and 6, the mouthpiece 20
Is a support portion 104 that fits into the recess 98 of the attachment portion 96.
And a kneaded hardened body 106 that is fixed to the lower end side of the support portion 104 and is bitten into the mouth of the patient M. The support portion 104 is formed of a plastic synthetic resin or the like on an elongated support plate 105.
A locking hole 108 that fits into the shaft piece 100 of the mounting portion 96 is opened at a position near the upper end of the support plate 105, and a hollow is formed inside the support plate 105 in the longitudinal direction from a communication port 110 opened at a lower position of the hole 108. The communication part 112 is formed, and the communication part 11 is formed.
A breathing port 114 that communicates with the patient 2 and communicates with the patient's mouth is opened at the lower end side of the support plate 105.

The hardened body 106 is made of a dental compound material, and is wound around the lower end of the support plate 105 in the initial softened state so as to prevent the breathing port 114 from being closed. Have been cured. As a result, the patient breathes with the mouthpiece 20 in which the hardened body 106 for exclusive use of the person is molded is attached / detached to / from the mounting portion 96 of the U-shaped frame 72 by the support portion 104, and the hardened body 106 is engaged in the mouth. Communication port 1 from the port 114 via the communication part 112
External air can be breathed into the mouth from 10, and even a patient with a nasal congestion can easily breathe through the mouth.

Next, the operation of the head and neck positioning apparatus 10 according to the embodiment of the present invention will be described. When the head and neck lesion of a patient is to be subjected to radiotherapy, the mouthpiece 20 previously formed exclusively for the patient is attached to the attachment portion 96 of the U-shaped frame 72 of the vertical movement frame 40 and attached and detached with the locking clip 102. Lock. Therefore, as shown in FIG.
With the head and neck H directed toward the frame device 18, the patient M
And lay the pillow P on the lower surface of the head and neck H. Then, the stoppers 58, 58 of the hollow machine frame 54 mounted on the guide rails 52 of the connecting plates 50 of the base frames 36, 36.
And vertically moving the hollow machine frame 54, the vertical frame 38, 38 erected on the hollow machine frame 54 is slid in the Y direction to fix the pad 62 fixed to the hollow machine frame 54 to the patient M. The hollow machine frame 54 is locked by the stoppers 58, 58 by adjusting so as to match the top position of the head and neck H of the.

When there is a gap between the pad 62 and the top of the patient's head and neck H, the stoppers 48, 48 of the base frames 36, 36 are loosened and the base frames are extended in the X direction along the guide rails 30, 30. 36, 36 are moved to bring the pad 62 into close contact with the top of the head and neck. As a result, the mouthpiece 20 is placed above the center line passing through the mouth of the patient M.

Therefore, the second motor 90 is rotated while operating the operation button of any one of the control units 24, 24 provided on the vertical frame 38, 38 to move the U-shaped frame 72 in the vertical movement frame 40. The pinions 82 and 82 of the lower rotary shaft 98 that interlocks with the second motor 90 and the U-shaped frame 72
The mouthpiece 20 is moved forward and backward in the X direction by meshing with the racks 76, 76 on the lower surfaces of both side frames, and the mouthpiece 20 is stopped at a position above the mouth of the patient. Next, the control unit 24 is also operated to rotate the first motor 64 of the drive unit 22 of the vertical movement frame 40 to interlock with the screw shafts 66, 66 in the vertical frame frames 38, 38 and the vertical substrates 70, 70. Vertical movement frame 40 with
Is lowered in the Z direction, and the hardened body 106 of the mouthpiece 20 is moved.
The first motor 64 is stopped when is inserted into the mouth of the patient.

Then, the mouthpiece 20 is placed in the mouth of the patient.
Since the pad 62 fixed to the hollow machine frame 54 is also closely attached to the top of the head and neck H at this time, the head and neck H of the patient M is positioned and fixed in a stable state without moving. It After positioning and fixing the head and neck H of this patient, the treatment bed 14 is moved in the direction of the radiation irradiation apparatus R, and the radiation irradiation apparatus R is moved from the vertical direction of the head and neck H to the horizontal direction as shown in FIG. While moving, it is possible to accurately irradiate the focus position with radiation by using the first opening 32 of the U-shaped frame 72 and the second opening 34 at the side surface position, thereby improving the result of radiotherapy.

After the radiation treatment is completed, the control unit 24 reversely operates the first and second motors 64 and 90 to raise the vertical movement frame 40 and raise the U-shaped frame 72.
Retracting the patient from the upper position to move the mouthpiece 20
Is to be evacuated from the mouth of the patient, removed from the attachment, and stored.

Although the mouthpiece 20 is designed to automatically move in the X and Z directions by the first and second motors, the vertical frame 38, 38 can also be slid in the Y direction by the motor. It may be automated in conjunction with the above. Then, the spatial X-coordinate, Y-coordinate, and Z-coordinate when each patient meshes the mouthpiece 20 in the mouth portion are specified, and stored in the control units 24 and 24, and the X-coordinate and Y coordinate are stored as necessary. It is possible to set the mouthpiece 20 at the mouth position corresponding to each patient while calling and controlling the data of the coordinates and the Z coordinate and controlling the drive, and accurate and prompt radiotherapy can be performed. The movement of the mouthpiece 20 in the X direction is interlocked with the second motor 90 to move the U-shaped frame 72 in the vertical movement frame 40 back and forth toward the patient. However, the present invention is not limited to this. The frame frame 72 may be fixed in the vertically movable frame 40, and the base frames 36, 36 may be slid in the X direction manually or automatically along the guide rails 30, 30 for adjustment. Further, it is possible to specify the irradiation range of radiation by combining the head and neck positioning apparatus and the film projection method according to the present invention,
There is no need to mark the treatment area on the skin surface, and the patient's mental distress can be alleviated.

[0040]

As described above, according to the head and neck positioning apparatus for radiotherapy according to the first aspect of the present invention, a therapeutic bed provided with a surface for placing the patient in the supine position, and a therapeutic bed on the therapeutic bed. A frame device having a frame member movable in the X direction, which is the height direction of the patient in the supine state, in the Y direction, which is the direction connecting both shoulders, and in the Z direction, which is the direction of the line of sight. A frame member supported by one of the frame members and provided with a mouthpiece attached downward, and a drive unit for moving the mouthpiece in at least the Z direction is provided. Further, the position of the mouthpiece is set to X, Y, The position of the Z coordinate is specified and stored, and if necessary, the mouthpiece is controlled to be fed into the mouth of the patient in a supine state. position The head and neck of the patient undergoing treatment can be fixed and held in a fixed position while the us piece is always set and meshed, and errors such as misalignment do not occur, and radiation can be accurately applied to the focus position of the head and neck with each treatment. Therefore, the results of radiation therapy can be dramatically improved.

According to a second aspect of the present invention, guide rails are attached to both sides of the treatment bed in the longitudinal direction, and the frame device is slidably mounted on the guide rails, whereby the X-axis is provided. By moving the frame device in the direction, the mouthpiece can be easily moved to a position near the mouth of the patient while manually guiding and moving the frame device.

According to a third aspect of the present invention, the frame device has a U-shaped frame shape or a rectangular shape in which a line-of-sight surface of the supine patient is open when the supine patient bites the mouthpiece. The first opening is formed and the U-shaped frame-shaped second opening is formed on both side surfaces where the temple side of the patient is located, so that the lesion of the patient's head and neck is formed from the first and second openings. It is possible to irradiate radiation to the target accurately without any obstacles.

According to a fourth aspect of the present invention, the frame device is provided with a base frame that slides on the guide rails in the X direction, and is provided on an upper surface of the base frame, and slides on the base frame in the Y direction. A vertical frame which is provided in a direction substantially vertical to the guide rail while moving, and a vertical movement in which the mouthpiece is mounted slidably in the Z direction with the mouthpiece facing downward. By comprising the frame, the spatial coordinates of the mouthpiece meshed with the mouth of the patient are specified, and the head and neck are controlled while the control unit stores the coordinates and calls the data of the coordinates as needed. A mouthpiece is set at the mouth position of each patient to be treated, and the head and neck are positioned and fixed to enable rapid and accurate radiation treatment.

According to a fifth aspect of the present invention, the vertical movement frame is provided with a U-shaped frame frame that is slidable in the X direction, and the mouthpiece is attached to an end of the U-shaped frame frame. This makes it possible to move the mouthpiece in the X direction quickly and accurately while automatically moving the U-shaped frame.

According to a sixth aspect of the present invention, the mouthpiece has a supporting portion attached to the frame member, and is fixed to the lower end side of the supporting portion and has a paste-like hardened body that is bitten into the mouth of the patient. The support portion forms a hollow communication portion in the longitudinal direction, has a communication port communicating with the communication portion on the upper side and communicating with the outside air, and the lower end side communicates with the communication portion in the mouth of the patient. By providing a breathing port that enables the patient to breathe external air from the communication port to the inside of the mouth while the stiff body of the mouthpiece is engaged with the mouth, the patient can easily breathe external air from the communication port. You will be able to breathe into your mouth.

According to a seventh aspect of the present invention, the base frame is provided so as to be attachable to and detachable from the treatment bed, so that the frame device is installed on the treatment bed and the head and neck of the patient is fixed. It is possible to perform treatment while positioning and fixing, and it is possible to perform treatment by removing the frame device at the time of radiation treatment for areas other than the head and neck.

[Brief description of drawings]

FIG. 1 is a perspective view of a head and neck positioning device for radiotherapy or the like according to an embodiment of the present invention installed on a treatment bed.

2 is a right side view of the head and neck positioning device of FIG. 1. FIG.

3 is a left side view of the head and neck positioning device of FIG. 1. FIG.

FIG. 4 is a plan view of a head and neck positioning device.

FIG. 5 is a partially enlarged cross-sectional view of a U-shaped frame showing a mounting state of the mouthpiece.

FIG. 6 is an enlarged perspective view of a mouthpiece.

7 is a partially enlarged cross-sectional view taken along the line AA of FIG.

FIG. 8 is a perspective view showing the irradiation state of radiation on the head and neck of a patient on a treatment bed.

[Explanation of symbols]

 10 Positioning Device for Head and Neck of Radiation Treatment, etc. 12 Surface for Placing Patient 14 Treatment Bed 16 Frame Member 18 Frame Device 20 Mouthpiece 22 Drive Unit 24 Control Unit 30 Guide Rail 32 First Opening 34 Second Opening 36 Base frame 38 Vertical frame 40 Vertical movement frame 64 First motor 72 U-shaped frame 90 Second motor 104 Support 106 Hardened body 110 Communication port 112 Communication port 114 Breathing port M Patient H Head and neck P Pillow R Radiation irradiation device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyuki Moribe 3127-2 Ikeda, Kumamoto City 56 (72) Inventor Seishiro Okamura 2-9-22 Motoyama, Kumamoto City Okamura Iron Works (72) Inventor Wife Kuniaki 507 Yawata-cho, Kumamoto-shi (72) Inventor Koichiro Shimizu 182--12, Kosa-cho, Kamimashiki-gun, Kumamoto

Claims (7)

[Claims] 1. A treatment bed having a surface for placing the patient in a supine position, an X direction which is a height direction of the patient in a supine state on the treatment bed, and a Y direction which is a direction connecting both shoulders. A frame device having a frame member that is movable in the Z direction, which is the direction of the line of sight, is provided, and a mouthpiece that is supported by any of the frame members and that is attached downward is provided. A drive unit for moving at least in the Z direction is provided, and further, the position of the mouthpiece is specified and stored as X, Y, Z coordinate positions, and if necessary, the mouthpiece is placed in the mouth of a supine patient. And a head and neck positioning device for radiotherapy, etc. 2. Guide rails are attached to both sides of the treatment bed in the longitudinal direction, and further, the frame device is slidably mounted on the guide rails, whereby the X-axis is mounted.
The head and neck positioning apparatus according to claim 1, wherein the head and neck positioning apparatus is configured to move in a direction. 3. The frame device, when a supine patient bites a mouthpiece, forms a U-shaped frame-shaped or rectangular first opening in which a line of sight of the supine patient is open. At the same time, the head and neck positioning device for radiotherapy or the like according to claim 1 or 2, wherein a second opening having a U-shaped frame is formed on both side surfaces of the patient on which the temple side is located. 4. The frame device includes a base frame that slides on the guide rail in the X direction, and a base frame provided on an upper surface of the base frame. The frame device slides on the base frame in the Y direction and moves on the guide rail. A vertical frame provided substantially vertically to the vertical frame, and a vertical frame that is slidable in the Z direction with respect to the vertical frame and has the mouthpiece mounted downward. The head and neck positioning device for radiotherapy or the like according to any one of 1 or 3. 5. The vertical frame is provided with a U-shaped frame frame that is slidable in the X direction, and the mouthpiece is attached to an end of the U-shaped frame.
A positioning device for the head and neck when performing the radiation treatment as described above. 6. The mouthpiece includes a support portion attached to a frame member, and a kneaded hardened body fixed to the lower end side of the support portion and bitten into the mouth of the patient. , Forming a hollow communication part in the longitudinal direction, having a communication port communicating with the communication part on the upper side and communicating with the outside air, and a lower end side having a breathing port communicating with the communication part in the mouth of the patient The head and neck positioning device for radiotherapy or the like according to claim 1. 7. The base frame is attached to and detached from the therapeutic bed.
The positioning device for the head and neck, such as during radiotherapy according to any one of 1.