CN219110671U

CN219110671U - Seat type fixing device for head tumor electron beam irradiation

Info

Publication number: CN219110671U
Application number: CN202222182829.0U
Authority: CN
Inventors: 胡永; 陈一兴; 周永康; 许书榕; 曾昭冲; 杜世锁
Original assignee: Zhongshan Hospital Fudan University
Current assignee: Zhongshan Hospital Fudan University
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-06-02
Anticipated expiration: 2032-08-18

Abstract

The utility model provides a seat type fixing device for head tumor electron beam irradiation, which comprises a movable base, wherein a seat and a lifting auxiliary head fixing device are arranged on the movable base; the lifting auxiliary head fixing device comprises a vertical telescopic rod, an auxiliary fixing head ring which horizontally slides back and forth is arranged at the top of the vertical telescopic rod, a plurality of head fixing bolts are arranged at different positions of the auxiliary fixing head ring, the head fixing bolts radially penetrate through the auxiliary fixing head ring and are in threaded fit with the auxiliary fixing head ring, and one end of the head fixing bolt, which is positioned at the inner side of the auxiliary fixing head ring, is coaxially rotated and provided with a disposable sucker. When the radiotherapy of the tumor at the top of the head is carried out, the utility model can well fix the head of the patient and is more friendly to the patient.

Description

Seat type fixing device for head tumor electron beam irradiation

Technical Field

The utility model relates to radiation therapy of head tumor, in particular to a seat type fixing device for head tumor electron beam irradiation.

Background

The tumor at the top of the head is relatively shallow, and electron beam irradiation can be used for the superficial tumor in order to obtain satisfactory irradiation dose distribution. The electron beam irradiation field is generally vertically downward, and the irradiation needs to meet a certain source skin distance. In addition, the top tumor surface of the patient needs to be parallel to the irradiation field as much as possible so that the whole tumor can obtain relatively uniform irradiation dose. Because of the relative shallowness of the tumor in the top of the head, it is often necessary to add tissue compensators to the top of the head of the patient in order to allow the tumor area of the patient to receive a higher, more uniform dose.

Based on the above requirements, under the existing treatment conditions, the patient can only lie prone on the accelerator treatment bed to receive the electron beam irradiation, the chest holds a pillow, and the chin is padded on the treatment bed, but the method can not fix the head of the patient, and the tissue compensator is used, so that the head of the patient can move more easily during the treatment period, the stable state can not be maintained for a long time, and the accurate irradiation can not be realized.

Disclosure of Invention

Based on the problems mentioned in the background art, the utility model is to design a height-adjustable seat type head fixing frame, so that a patient can fix the head on the fixing frame while sitting, and the head is kept in a completely stable state in the whole treatment process. Not only improves the comfort of the treatment of patients in times, but also effectively improves the stability and the treatment precision of the treatment part, and the specific scheme is as follows:

a seat-type fixing device for overhead tumor electron beam irradiation, comprising a movable base on which a seat and a lifting auxiliary head fixing device are mounted;

the lifting auxiliary head fixing device comprises a vertical telescopic rod, an auxiliary fixing head ring which horizontally slides back and forth is arranged at the top of the vertical telescopic rod, a plurality of head fixing bolts are arranged at different positions of the auxiliary fixing head ring, the head fixing bolts radially penetrate through the auxiliary fixing head ring and are in threaded fit with the auxiliary fixing head ring, and one end of the head fixing bolt, which is positioned at the inner side of the auxiliary fixing head ring, is coaxially rotated and provided with a disposable sucker.

Further, a plurality of universal wheels are arranged at the bottom of the movable base, and each universal wheel is provided with a locking piece.

Further, the seat is a lifting chair, the lifting chair is provided with a cushion with a backrest, a lifting seat is connected below the cushion, a piston rod and a deflector rod for controlling the piston rod to move up and down are arranged on the lifting seat, and the top of the piston rod is fixedly connected with the cushion.

Further, the vertical telescopic rod comprises sliding fit's lower beam and upper beam, and the lower beam is equipped with slide rail and the slide hole that upper beam slided from top to bottom, and the upper beam lateral wall is equipped with the altitude scale, the lower beam disposes the locking mechanism that is used for fixed upper beam.

Further, the locking mechanism is a bolt, a bolt hole is formed in one side of the sliding rail or the sliding hole of the lower rod, a longitudinal row of adjusting holes are formed in one side of the sliding rail or the sliding hole of the upper rod, and the bolt is inserted into the bolt hole of the lower rod and one of the adjusting holes of the upper rod to fix the upper rod; or alternatively

The locking mechanism is a locking screw, the locking screw penetrates through the lower rod and abuts against the side wall of the upper rod, and the locking screw is in threaded fit with the lower rod.

Further, the sucker is made of soft plastic, rubber or silica gel.

Further, one end of the head fixing bolt is provided with a T-shaped buckle, and one end of the sucker is provided with a T-shaped clamping hole and a T-shaped buckle in a matching way.

Further, the auxiliary fixing head ring is connected to the top of the vertical telescopic rod through a horizontal telescopic rod;

the auxiliary fixing head ring is provided with three head fixing bolts, and the three head fixing bolts and the horizontal telescopic rod are distributed at 90 degrees.

When the electron beam irradiation of the tumor on the head top is carried out, no fixing device can be used, the head cannot be effectively fixed, and the head can move during irradiation. Secondly, when the electron beam of the tumor at the top of the head irradiates, the comfort is better when the patient selects the seat, and the position repeatability in the irradiation is better. In addition, when the electron beam irradiates, the distance from the source skin to 100cm is generally adopted for irradiation, and the head tumor of the patient and the bottom surface of the electron beam light limiting cylinder are often required to be close to each other, or a gap of about 5cm is reserved, namely the head height of the patient is required to be adjustable. Therefore, the utility model has the advantages of fixing, comfort and height-adjustable three dimensions, and solves the problems of positioning and fixing of the head tumor electron beam irradiation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a seat-type fixing device for electron beam irradiation of an overhead tumor according to the present utility model;

fig. 2 is a schematic diagram of the connection relationship between the suction cup and the auxiliary fixing head ring.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

In order to provide a thorough understanding of the present utility model, detailed steps and detailed structures will be presented in the following description in order to explain the technical solution of the present utility model. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

Referring to fig. 1-2, the present utility model provides a seat-type fixing device for overhead tumor electron beam irradiation, which comprises a moving base 10, a seat 20 and a lifting auxiliary head fixing device 30 mounted on the moving base 10.

Mobile base 10

The bottom of the movable base 10 is provided with a plurality of universal wheels 11, each universal wheel 11 is provided with a locking piece 12, and the locking pieces 12 can lock the universal wheels 11 from rotating.

Chair 20

The seat 20 is a lifting chair, the lifting chair is provided with a cushion 21 with a backrest 22, a lifting seat 23 is connected below the cushion 21, the lifting seat 23 is provided with a deflector 24 for controlling a piston rod to move up and down, and the cushion 21 can be driven to lift by stepping on the deflector 24. In one embodiment, the lifting seat 23 is internally provided with a hydraulic device, and is jacked up by a pedal pump by utilizing a hydraulic principle; in another embodiment, the piston rod is driven upwards by using a mechanical principle and a principle of a ratchet and a pawl. The specific structure belongs to the common prior art and is not described in detail herein.

Lifting auxiliary head fixing device 30

The lifting auxiliary head fixing device 30 comprises a vertical telescopic rod, an auxiliary fixing head ring 37 which horizontally slides back and forth is arranged at the top of the vertical telescopic rod, a plurality of head fixing bolts 38 are arranged at different positions of the auxiliary fixing head ring 37, the head fixing bolts 38 radially penetrate through the auxiliary fixing head ring 37 and are in threaded fit with the auxiliary fixing head ring 37, and a sucker 39 is rotatably arranged at one end of the head fixing bolt 38, which is positioned at the inner side of the auxiliary fixing head ring 37.

The vertical telescopic rod is composed of a lower rod 31 and an upper rod 32 which are in sliding fit, the lower rod 31 is provided with a sliding rail and a sliding hole for the upper rod 32 to slide up and down, the side wall of the upper rod 32 is provided with a height scale 35, and the lower rod 31 is provided with a locking mechanism 33 for fixing the upper rod 32.

In one embodiment, the locking mechanism 33 is a latch, the lower rod 31 is provided with a latch hole at one side of the sliding rail or the sliding hole, the upper rod 32 is provided with a longitudinal row of adjusting holes 34 at one side of the sliding rail or the sliding hole, and the latch is inserted into the latch hole of the lower rod 31 and one of the adjusting holes 34 of the upper rod 32 to fix the upper rod 32. In another embodiment, the locking mechanism 33 is a locking screw that passes through the lower rod 31 and abuts against the side wall of the upper rod 32, and the locking screw is in threaded engagement with the lower rod 31. The lower rod 31 is provided with a rubber material therein so that the movable range of the upper rod 32 in the lower rod 31 is within 30 cm.

The suction cup 39 is a disposable suction cup detachably mounted at the end part of the head fixing bolt 38, and the suction cup 39 is made of soft plastic, rubber or silica gel. Fig. 2 shows a connection mode of the suction cup 39 and the head fixing bolt 38, a T-shaped buckle 38-1 is arranged at the end part of the head fixing bolt 38, a T-shaped clamping hole 39-1 is arranged at one end of the suction cup 39 and matched with the T-shaped buckle 38-1, the suction cup 39 has certain flexibility, can be conveniently detached and installed on the head fixing bolt 38, and the head fixing bolt 38 and the suction cup 39 can rotate relatively. The sucking disc 39 can be pushed forward when the head fixing bolt 38 is rotated, and when the sucking disc 39 is abutted against the head of a patient, the front of the sucking disc 39 is stressed, and the sucking disc 39 cannot rotate circumferentially and only moves axially, so that the head of the patient can be fixed better.

The auxiliary fixing head ring 37 is connected to the top of the vertical telescopic rod through a horizontal telescopic rod 36. Three head fixing bolts 38 are arranged on the auxiliary fixing head ring 37, and the three head fixing bolts 38 and the horizontal telescopic rod 36 are distributed at 90 degrees. The vertical telescopic rod consists of two sections of horizontal sliding rods, and the length adjusting mode of the vertical telescopic rod is the same as that of the vertical telescopic rod, and is not repeated here.

The application method of the utility model is as follows:

the seat type fixing device irradiated by the electron beam of the tumor at the head top is pushed into the treatment room of the linear accelerator, placed under the head of the linear accelerator, and the upper rod 32 is lifted upwards, so that the auxiliary fixing head ring 37 is separated from the lower edge of the light limiting cylinder by about 10cm, and the upper rod 32 is fixed by the bolt 33 to avoid the lower slide of the upper rod. The cushion 21 is lowered to the lowest position, the patient sits on the cushion 21, steps on the deflector rod 24, rises the height of the patient, slowly stretches the head of the patient into the auxiliary fixing head ring 37, and stops stepping on the deflector rod 24 when the tumor surface at the top of the head is close to the light limiting cylinder or is 5cm away from the light limiting cylinder, so that the height of the patient is not changed any more. At this time, the vertical position of the auxiliary fixing head ring 37 is finely adjusted so that the auxiliary fixing head ring 37 is equivalent to the forehead level of the patient, and the upper rod 32 is again fixed by the latch 33. The horizontal orientation of the head of the patient and the auxiliary fixing head ring 37 is finely adjusted so that the tumor surface at the top of the head of the patient is parallel to the bottom surface of the light limiting cylinder as much as possible, a disposable sucker 39 is inserted at the front end of the head fixing bolt 38, then the head fixing bolt 38 is screwed, and the head of the patient is fixed by the suckers of the three head fixing bolts 38.

After the patient is positioned and fixed, the scale of the upper rod 32 is recorded for the next positioning reference, and the electronic irradiation is performed. After the irradiation is completed, the three head fixing bolts 38 are unscrewed, the seat cushion 21 is lowered to the lowest position, and the patient leaves the fixing device. The locking tab 12 is loosened and the present fixture is pushed into place.

The utility model has the advantages that:

1. the fixing device is fixed by adopting a seat, and compared with a prone position, the comfort is improved.

2. The bottom of the fixing device is provided with the roller, so that the fixing device can move, and inconvenience in carrying is avoided.

3. The fixing device can effectively fix the head of a patient, so that the head is kept still during radiotherapy, and the accuracy of the irradiation position is improved.

4. When the head is fixed, the fixing device is not implanted into the skull by using steel nails like a gamma head frame, but directly contacts the head by adopting noninvasive bolts and suckers, so that the comfort of a patient is improved. Meanwhile, the sucker is detachable, so that 'one person can use three discs', and the sucker is sanitary and economical.

5. The height of the seat and the height of the lifting auxiliary head fixing device can be adjusted, and the head tumor of the patient can be sent into the appointed position for accurate irradiation.

The preferred embodiments of the present utility model have been described above. It is to be understood that the utility model is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model or modifications to equivalent embodiments without departing from the scope of the technical solution of the present utility model, using the methods and technical contents disclosed above, without affecting the essential content of the present utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A seating type fixing device for overhead tumor electron beam irradiation, characterized in that the seating type fixing device comprises a movable base (10), and a seat (20) and a lifting auxiliary head fixing device (30) are arranged on the movable base (10);

the lifting auxiliary head fixing device (30) comprises a vertical telescopic rod, an auxiliary fixing head ring (37) capable of sliding horizontally back and forth is arranged at the top of the vertical telescopic rod, a plurality of head fixing bolts (38) are arranged at different positions of the auxiliary fixing head ring (37), the head fixing bolts (38) radially penetrate through the auxiliary fixing head ring (37) and are in threaded fit with the auxiliary fixing head ring (37), and one end of the head fixing bolt (38) located on the inner side of the auxiliary fixing head ring (37) is coaxially rotated to be provided with a disposable sucker (39).

2. The seat-type fixing device for the electron beam irradiation of the tumor on the head according to claim 1, wherein a plurality of universal wheels (11) are arranged at the bottom of the movable base (10), and each universal wheel (11) is provided with a locking piece (12).

3. The seat type fixing device for the electron beam irradiation of the tumor on the head top according to claim 1, wherein the seat (20) is a lifting chair, the lifting chair is provided with a cushion (21) with a backrest (22), a lifting seat (23) is connected below the cushion (21), the lifting seat (23) is provided with a piston rod and a deflector rod (24) for controlling the piston rod to move up and down, and the top of the piston rod is fixedly connected with the cushion (21).

4. The seat type fixing device for head tumor electron beam irradiation according to claim 1, wherein the vertical telescopic rod consists of a lower rod (31) and an upper rod (32) which are in sliding fit, the lower rod (31) is provided with a sliding rail and a sliding hole for the upper rod (32) to slide up and down, the side wall of the upper rod (32) is provided with a height scale (35), and the lower rod (31) is provided with a locking mechanism (33) for fixing the upper rod (32).

5. The seat-type fixing device for the electron beam irradiation of the tumor at the head top according to claim 4, wherein the locking mechanism (33) is a bolt, the lower rod (31) is provided with a bolt hole at one side of the sliding rail or the sliding hole, the upper rod (32) is provided with a longitudinal row of adjusting holes (34) at one side of the sliding rail or the sliding hole, and the bolt is inserted into the bolt hole of the lower rod (31) and one of the adjusting holes (34) of the upper rod (32) to fix the upper rod (32); or alternatively

The locking mechanism (33) is a locking screw, the locking screw penetrates through the lower rod (31) and abuts against the side wall of the upper rod (32), and the locking screw is in threaded fit with the lower rod (31).

6. Seating fixation device for overhead tumour electron beam irradiation according to claim 1, characterized in that the suction cup (39) is made of soft plastic, rubber or silicone.

7. The seat type fixing device for head tumor electron beam irradiation according to claim 1, wherein one end of the head fixing bolt (38) is provided with a T-shaped buckle (38-1), and one end of the sucker (39) is provided with a T-shaped buckle hole (39-1) matched with the T-shaped buckle (38-1).

8. The seat-type fixing device for the electron beam irradiation of the tumor at the top of the head according to claim 1, characterized in that an auxiliary fixing head ring (37) is connected to the top of the vertical telescopic rod through a horizontal telescopic rod (36);

the auxiliary fixing head ring (37) is provided with three head fixing bolts (38), and the three head fixing bolts (38) and the horizontal telescopic rod (36) are distributed at an angle of 90 degrees.