CN111437523A - Position fixing device for radiotherapy of rectal cancer patient - Google Patents

Abstract

The invention provides a body position fixing device for radiotherapy for rectal cancer patients, which is mainly composed of a body support plate, a prone headrest and a grip rod. The position of the headrest can be adjusted and fixed according to the height of the patient. Compared with the existing positioning device without a headrest and a gripper, the position of the patient can be fixed better and the error of radiotherapy can be reduced. The body position fixing device of the present invention adopts the prone design, and the patient with rectal cancer lies prone on the body support plate during radiotherapy, the head is naturally placed on the prone headrest, the arms are naturally grasped on the grip rod, and the neutral position of the central axis of the spine is maintained. , the phenomenon of back torsion does not occur. The patient's abdomen is located in the hollow of the fixation frame and sags naturally, thereby keeping the small intestine and bladder away from the rectal target area and reducing the exposure to normal tissues. The invention can ensure that the patient's body position is highly consistent during each radiation therapy, improve the comfort of the patient, and ensure the stability of the patient's body position during the treatment process.

Description

A postural fixation device for radiotherapy for patients with rectal cancer

technical field

The invention belongs to the field of medical devices and relates to a medical body position fixing device, in particular to a body position fixing device for performing radiation therapy on rectal cancer patients.

Background technique

In recent years, the number of rectal cancer patients receiving radiation therapy has gradually increased. In radiation therapy, X-rays are used to irradiate the tumor site multiple times, requiring the patient to maintain a fixed, repeatable position on the treatment couch.

In the radiation therapy of rectal cancer, in order to protect the small intestine, a hollow rectal special fixation frame is usually used as a postural fixation device at present. When using the device, the patient lies prone on the device, the abdomen is placed in the hollow of the fixing frame, the head is turned to one side and the front end of the device is placed, and the arms are wrapped around the top of the head. This device can only fix the patient's waist and abdomen, but cannot fix the patient's head, back and upper limbs. Therefore, during each treatment, the deflection angle of the head, the bending degree of the back and the placement of the arms are quite different, which can easily cause placement errors. In addition, since the patient's head is always deflected during the treatment process, the comfort is not good, and it is easy to cause the patient's body position to change during the treatment process.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a body position fixing device for radiotherapy of rectal cancer patients, which is mainly composed of a body support plate, a prone headrest, and a grip rod. The two ends of the U-shaped recess are for the patient to hold with both hands when they are prone. There are clip grooves on the inner edge of the U-shaped recess, and a head scale is provided on the U-shaped recess of the body support, so as to be consistent with the patient's skin. line and record. The other end of the body support plate is provided with a leg support, the shape of the leg support is suitable for the curvature of the leg, the middle section of the body support plate is provided with an oval arc groove, and the oval arc groove is in line with the curvature of the human abdomen. Suitable, a square abdominal hole is arranged in the arc groove near the leg support, the square abdominal hole penetrates the body support plate, and a radiotherapy scale is arranged on the side of the body support plate.

The prone headrest is a square with a gap on one side, with a support foot, and a head pad face hole in the middle, which is convenient for the patient to breathe when lying prone. Suitable, the prone headrest can slide back and forth in the U-shaped recess of the body support, insert the notch end of the prone headrest into the U-shaped recess of the body support, and connect the prone headrest to the U-shaped recess through the slot teeth and slot 9. The body support plate is fixed and will not slide freely. There is an indicator arrow at one corner of the prone headrest, which can be adjusted and recorded according to the height of the patient, so as to maintain the same fixed position in multiple treatments. Both the card slot and the card slot teeth are serrated.

A circle of soft pads is laid on the face of the head pad to improve the comfort of the patient.

The present invention adopts a prone design, and a prone headrest and a grip bar are respectively provided for the patient's head and arms, thereby obtaining a body position fixing device designed for rectal cancer patients with higher repeated positioning accuracy and higher comfort. The fixed position of the same patient is marked by 2 scales to ensure the precision of radiotherapy.

Compared with the prior art, the present invention adds an adjustable headrest and a grip, so that the comfort of patients undergoing radiotherapy for rectal cancer is increased. Since the position of the headrest can be adjusted and fixed according to the height of the patient, compared with the existing positioning device without the headrest and the gripper, the position of the patient can be better fixed, and the error of radiotherapy can be reduced. The body position fixing device of the present invention adopts a prone design, and a patient with rectal cancer is prone to lie on the body support plate during radiotherapy, the head is naturally placed on the head pad, the arms are naturally grasped on the grip rod, and the neutral position of the central axis of the spine is maintained. The phenomenon of back twisting does not occur. The patient's abdomen sags naturally at the hollow of the fixation frame, thereby keeping the small intestine and bladder away from the rectal target area and reducing the exposure to normal tissues. The invention can ensure that the patient's body position is highly consistent during each radiation therapy, improve the comfort of the patient, and ensure the stability of the patient's body position during the treatment process.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a schematic diagram of the structure of the body support plate.

Figure 3 is a schematic diagram of the structure of the headrest.

Detailed ways

The present invention will be further described with reference to the accompanying drawings and embodiments.

Example 1

Referring to Figure 1-3, a postural fixation device for radiotherapy of rectal cancer patients is mainly composed of a body support 1, a prone headrest 2, and a grip 3. One end of the body support 1 is a U-shaped recess, and the grip is 3. Vertically installed on both ends of the U-shaped recess, for the patient to hold with both hands when prone Scale 8 to align and record with the markings on the patient's skin. The other end of the body support plate 1 is provided with 2 leg supports 6, the shape of the leg supports 6 is suitable for the curvature shape of the legs, the middle section of the body support plate 1 is provided with an oval arc groove 4, and the oval arc groove 4. It is suitable for the curvature of the human body's abdomen, and is provided with a square abdominal hole 5 in the arc groove 4 near the leg support 6. The square abdominal hole 5 penetrates the body support plate 1, and a radiotherapy scale 7 is arranged on the side of the body support plate 1. .

The prone headrest 2 is a square with a gap on one side, and is provided with 4 feet, with a head pad face hole 10 in the middle, which is convenient for the patient to breathe when lying prone. The teeth 12 are compatible with the card slot 9, the prone headrest 2 can slide back and forth in the U-shaped recess of the body support plate 1, insert the notch end of the prone headrest 2 into the U-shaped recess of the body support plate 1, The grooves 12 and the card slots 9 fix the prone headrest 2 and the body support 1, and will not slide freely. There is an indicator arrow 11 at one corner of the prone headrest 2, and the position of the headrest can be adjusted and recorded according to the height of the patient. in order to maintain the same fixed position during multiple treatments. Both the card slot 9 and the card slot teeth 12 are serrated.

A circle of soft pads is laid on the face hole 10 of the head pad to improve the comfort of the patient.

Example 2

During the first positioning CT scan, the patient lies prone on the body support 1, the abdomen is placed in the arc groove 4, the lower abdomen is placed in the square abdominal hole 5, the legs are placed on the leg support 6, and the hands are held together. Hold the fixed grip bar 3, adjust the prone headrest 2 to a comfortable position according to your height, put your face into the face 10 of the headpad, and record the appropriate position scale according to the head scale 8 aligned with the arrow 11 on the prone headrest 2 , to facilitate accurate alignment of the same patient during re-radiotherapy. After the patient is lying down, stick a positioning mark on the center of the corresponding radiotherapy target area on the skin, and record the coordinates corresponding to the marked line at 7 of the radiotherapy scale.

The above steps are repeated according to the recorded headrest position for each radiotherapy of the same patient to ensure that the repeated positioning accuracy of the patient meets the requirements of radiotherapy.

Compared with the prior art, the present invention adds an adjustable headrest and a grip, so that the comfort of patients undergoing radiotherapy for rectal cancer is increased. Since the position of the headrest can be adjusted and fixed according to the height of the patient, compared with the existing positioning device without headrest and gripper, the position of the patient can be better fixed, errors of radiotherapy are reduced, and the comfort of the patient is also improved.

Claims (6)

1. A body position fixing device for radiotherapy of a patient with rectal cancer is characterized by mainly comprising a body supporting plate (1), a prone headrest (2) and a holding rod (3), wherein one end of the body supporting plate (1) is a U-shaped notch, the holding rod (3) is vertically arranged at two ends of the U-shaped notch, a clamping groove (9) is arranged at the inner edge of the U-shaped notch, head scales (8) are arranged on the U-shaped notch of the body supporting plate (1), 2 leg supports (6) are arranged at the other end of the body supporting plate (1), an oval groove (4) is arranged in the middle of the body supporting plate (1), a square abdominal hole (5) is arranged in the cambered groove (4), radiotherapy scales (7) are arranged on the side surface of the body supporting plate (1), the prone headrest (2) is a square with a notch at the side, 4) supporting legs are arranged, a headrest face hole (10) is formed in the middle, clamping groove teeth (12) are arranged at the bottoms of the 4 supporting legs, the clamping groove teeth (12) are matched with the clamping grooves (9), and an indicating arrow (11) is arranged at one corner of the prostrate headrest (2).

2. A posture immobilization device for radiotherapy of rectal cancer patients according to claim 1 wherein the square shaped abdominal hole (5) penetrates the body support plate (1).

3. A body position fixing device for the radiotherapy of a patient with rectal cancer according to claim 1, characterized in that the gap end of the prone headrest (2) is inserted into the U-shaped recess of the body supporting plate (1), the prone headrest (2) can slide back and forth in the U-shaped recess of the body supporting plate (1), and the prone headrest (2) is fixed with the body supporting plate (1) through the slot teeth (12) and the slots (9).

4. A posture fixation device for the radiotherapy of rectal cancer patients according to claim 1, characterized in that the notches (9) and the notch teeth (12) are saw-toothed.

5. A posture fixing device for the radiotherapy of rectal cancer patients according to claim 1, characterized in that the elliptic arc groove (4) is adapted to the curvature of the abdomen of the human body, and the leg support (6) is adapted to the curvature of the leg.

6. A posture fixation device for the radiotherapy of rectal cancer patients according to claim 1, characterized in that a soft pad is laid on the head-pad face (10).

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