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

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

A seat-type fixation device for electron beam irradiation of tumors on the top of the head

technical field

The utility model relates to radiotherapy for tumors on the top of the head, in particular to a seat-type fixing device for electron beam irradiation of tumors on the top of the head.

Background technique

The tumors on the top of the head are relatively superficial. In order to obtain a satisfactory radiation dose distribution, electron beams can be used to irradiate superficial tumors. The electron beam irradiation field is generally vertically downward, and the irradiation needs to meet a certain source-to-skin distance. In addition, the tumor surface on the top of the patient's head should be parallel to the irradiation field as much as possible so that the entire tumor can obtain a relatively uniform irradiation dose. Because the tumor on the top of the head is relatively superficial, in order to allow the patient to receive a higher and more uniform dose to the tumor area, it is often necessary to add tissue compensators on the top of the patient's head.

Based on the above requirements, under the existing treatment conditions, the patient can only lie on the accelerator treatment bed to receive electron beam irradiation, hold a pillow on the chest, and rest the chin on the treatment bed, but this method cannot fix the patient's head. The use of tissue compensators makes it easier for the patient's head to move during treatment, making it impossible to maintain a stable state for a long time and to achieve precise irradiation.

Utility model content

Based on the problems mentioned in the background technology, the utility model patent intends to design a height-adjustable seat-type head fixing frame. The patient can fix the head on the fixing frame while sitting, and keep the head during the whole treatment process. completely stable state. It not only improves the comfort of patients in fractionated treatment, but also effectively improves the stability and accuracy of the treatment site. The specific plan is as follows:

A seat-type fixing device for electron beam irradiation of tumors on the top of the head, the seat-type fixing device includes a moving base, and a seat and a lifting auxiliary head fixing device are installed on the moving base;

The lifting auxiliary head fixing device includes a vertical telescopic rod, and an auxiliary fixed head ring that slides horizontally back and forth is installed on the top of the vertical telescopic rod, and a plurality of heads are installed at different positions of the auxiliary fixed head ring. The head fixing bolt radially passes through the auxiliary fixing head ring and is threadedly engaged with the auxiliary fixing head ring, and the head fixing bolt is coaxially rotated at one end inside the auxiliary fixing head ring Installed with disposable suction cups.

Further, the bottom of the mobile base is provided with a plurality of universal wheels, each of which is provided with a locking piece.

Further, the seat is a lift chair, and the lift chair is provided with a seat cushion with a backrest, and a lift seat is connected under the seat cushion, and the lift seat is equipped with a piston rod and a driving rod for controlling the up and down movement of the piston rod. The top of the rod is fixedly connected with the cushion.

Further, the vertical telescopic rod is composed of a slidingly fitted lower rod and an upper rod, the lower rod is provided with slide rails and slide holes for the upper rod to slide up and down, the side wall of the upper rod is provided with a height scale, and the lower rod is configured There is a locking mechanism for securing the upper pole.

Further, the locking mechanism is a latch, the lower rod is provided with a latch hole on one side of the slide rail or the slide hole, and the upper rod is provided with a row of longitudinal adjustment holes on one side of the slide rail or the slide hole, and the latch is inserted into the The pin hole in the lower post and one of the adjustment holes in the upper post to secure the upper post; or

The locking mechanism is a locking screw, which passes through the lower rod and abuts against the side wall of the upper rod, and the locking screw is threadedly engaged with the lower rod.

Further, the suction cup is made of soft plastic, rubber or silicone.

Further, one end of the head fixing bolt is provided with a "T"-shaped buckle, and one end of the suction cup is provided with a "T"-shaped buckle hole to cooperate with the "T"-shaped buckle.

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

Three said head fixing bolts are arranged on said auxiliary fixing head ring, and the three said head fixing bolts are distributed at 90° to said horizontal telescopic rod.

Currently, when electron beam irradiation is performed for tumors on the top of the head, there is no fixation device available, and the head cannot be effectively fixed, and the head will move during irradiation. Secondly, when the electron beam is irradiated to the tumor on the top of the head, when the patient chooses the seat, the comfort is better, and the position repeatability within the fractional irradiation is better. In addition, when electron beams are irradiated, a distance of 100 cm from the source skin is generally used for irradiation. The tumor on the top of the patient's head and the bottom surface of the electron beam limiting tube often need to be close to each other, or a gap of about 5 cm should be left, which is the height of the patient's head. adjustable. Therefore, the utility model takes into account the above-mentioned three dimensions of fixation, comfort, and height adjustment, and solves the difficult problem of placement and fixation for the electron beam irradiation of the tumor on the top of the head.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the practical For some novel embodiments, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Figure 1 is a schematic structural view of a seat-type fixing device for electron beam irradiation of tumors on the top of the head provided by the utility model;

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

Detailed ways

In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

In order to thoroughly understand the present utility model, detailed steps and detailed structures will be provided in the following description, so as to illustrate the technical solution of the present utility model. The preferred embodiments of the utility model are described in detail as follows, but in addition to these detailed descriptions, the utility model can also have other implementations.

Referring to Figures 1-2, the utility model provides a seat-type fixing device for electron beam irradiation of tumors on the head. The seat-type fixing device includes a mobile base 10 on which a seat 20 and a lift Auxiliary head immobilization device 30 .

mobile base 10

The bottom of the mobile base 10 is provided with a plurality of universal wheels 11, and each universal wheel 11 is provided with a locking plate 12, and the locking plate 12 can lock the universal wheels 11 to prevent them from rotating.

Seat 20

The seat 20 is a lift chair, and the lift chair is provided with a seat cushion 21 with a backrest 22, and a lift seat 23 is connected below the seat cushion 21, and the lift seat 23 is equipped with a driving lever 24 for controlling the up and down movement of the piston rod. Can drive cushion 21 lifting. In one embodiment, there is a hydraulic device inside the lifting seat 23, and a pedal pump is used to push it up using the hydraulic principle; in another embodiment, the mechanical principle is used to drive the piston rod to move up with the principle of ratchet and pawl. The specific structure belongs to the common prior art, and will not be repeated here.

Lift Assist Head Immobilizer 30

The lifting auxiliary head fixing device 30 includes a vertical telescopic rod, and an auxiliary fixed head ring 37 that slides forward and backward horizontally is installed on the top of the vertical telescopic rod, and a plurality of head fixing bolts are installed at different positions of the auxiliary fixed head ring 37 38. The head fixing bolt 38 radially passes through the auxiliary fixing head ring 37 and is threadedly matched with the auxiliary fixing head ring 37. The end of the head fixing bolt 38 located inside the auxiliary fixing head ring 37 is rotatably mounted with a suction cup 39.

Wherein, the vertical telescoping rod is made up of the lower rod 31 and the upper rod 32 of sliding fit, the lower rod 31 is provided with slide rails and slide holes for the upper rod 32 to slide up and down, the upper rod 32 side wall is provided with a height scale 35, and the lower rod 31 is equipped 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 on one side of the slide rail or the slide hole, and the upper rod 32 is provided with a row of longitudinal adjustment holes on one side of the slide rail or the slide hole 34, use a bolt to insert into the bolt hole of the lower rod 31 and one of the adjustment holes 34 of the upper rod 32 to fix the upper rod 32 . In another embodiment, the locking mechanism 33 is a locking screw. The locking screw passes through the lower rod 31 and abuts against the side wall of the upper rod 32 . The locking screw is threadedly engaged with the lower rod 31 . The lower rod 31 is provided with a rubber material, so that the movable range of the upper rod 32 in the lower rod 31 is within 30 cm.

Suction cup 39 is the disposable suction cup that is detachably installed on the end of head fixing bolt 38, and suction cup 39 material can be selected soft plastics, rubber or silica gel etc. to make. Fig. 2 has shown a kind of connection mode of suction cup 39 and head fixing bolt 38, and "T" type buckle 38-1 is provided at the end of head fixing bolt 38, and one end of suction cup 39 is provided with "T" type clip The hole 39-1 cooperates with the "T" buckle 38-1, and the suction cup 39 itself has certain flexibility, which can be easily disassembled and installed on the head fixing bolt 38, and the head fixing bolt 38 and the suction cup 39 can rotate relatively . When the head fixing bolt 38 is turned, the suction cup 39 can be pushed forward. When the suction cup 39 abuts against the patient's head, the force on the front of the suction cup 39 will not rotate circumferentially but move axially, thereby better fixing the patient's head. .

Auxiliary fixed head ring 37 is connected on the top of vertical telescopic rod by 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 mutually distributed at 90°. The vertical telescopic rod is composed of two sections of horizontal sliding rods, and its length adjustment method is the same as that of the vertical telescopic rod, which will not be repeated here.

The using method of the present utility model is as follows:

Push the seat-type fixing device for the electron beam irradiation of the tumor on the top of the head into the treatment room of the linear accelerator, place it under the head of the linear accelerator, and lift the upper rod 32 upward, so that the auxiliary fixed head ring 37 is about 10 cm away from the lower edge of the light-limiting tube. And fix upper rod 32 with latch 33 to avoid its glide. Lower the cushion 21 to the lowest position, the patient sits on the cushion 21, step on the lever 24, raise the height of the patient, slowly extend the patient's head into the auxiliary fixing head ring 37, and make the tumor surface on the top of the head close to the light-limiting tube Or when being separated by 5cm from the light-limiting tube, stop stepping on the driving lever 24, and the patient's height no longer changes. At this moment, the vertical position of the auxiliary fixed head ring 37 is fine-tuned so that the auxiliary fixed head ring 37 is equivalent to the forehead level of the patient, and the upper rod 32 is fixed again with the latch 33 . Fine-tune the patient's head and the horizontal orientation of the auxiliary fixed head ring 37 so that the tumor surface on the top of the patient's head is as parallel as possible to the bottom surface of the light-limiting tube, insert the disposable suction cup 39 into the front end of the head fixing bolt 38, and then tighten the head fixing bolt 38, the patient's head is fixed by the suction cups of three head fixing bolts 38 .

After the patient's positioning and fixation are completed, record the scale of the upper rod 32 for reference in the next positioning, and perform electronic beam irradiation. After the irradiation is completed, unscrew three head fixing bolts 38, seat cushion 21 is lowered to the lowest position, and the patient leaves the fixing device. Loosen the locking piece 12, and push the fixing device to a suitable place for placement.

The utility model has the advantages of:

1. This fixing device adopts seat-type fixing, which improves the comfort compared with the prone position.

2. The bottom of the fixing device is equipped with rollers, which can be moved to avoid the inconvenience of transportation.

3. The fixing device can effectively fix the patient's head, so that the head remains still during radiotherapy and improves the accuracy of the irradiation position.

4. When fixing the head, this fixation device does not use steel nails to implant into the skull like the Gamma Knife head frame, but uses non-invasive bolts and suction cups to directly contact the head to improve the comfort of the patient. At the same time, the suction cup is detachable, which can realize "three dishes for one person", which is hygienic and economical.

5. The height of the seat and the lifting auxiliary head fixation device can be adjusted, and the tumor on the top of the patient's head can be sent to the designated position for precise irradiation.

The preferred embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and the devices and structures not described in detail should be understood as being implemented in a common way in the art; any person familiar with the art, without departing from Under the scope of the technical solution of the utility model, many possible changes and modifications can be made to the technical solution of the utility model by using the methods and technical contents disclosed above, or be modified into equivalent embodiments with equivalent changes, which does not affect the utility model. new substance. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical proposal of the present invention.

Claims (8)

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.

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