CN111437523A

CN111437523A - Position fixing device for radiotherapy of rectal cancer patient

Info

Publication number: CN111437523A
Application number: CN202010387618.3A
Authority: CN
Inventors: 白雪; 王彬冰; 张婕
Original assignee: Zhejiang Cancer Hospital
Current assignee: Zhejiang Cancer Hospital
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-07-24

Abstract

The invention provides a body position fixing device for radiotherapy of a patient with rectal cancer, which mainly comprises a body supporting plate, a prone headrest and a holding rod, wherein the prone headrest and the holding rod are arranged on the upper section of the body supporting plate. The position of the headrest can be adjusted and fixed according to the height of a patient, and compared with the existing positioning device without the headrest and the hand grab, the position of the patient can be better fixed, and the error of radiotherapy is reduced. The body position fixing device adopts a prone type design, when a patient with rectal cancer is subjected to radiation therapy, the patient lies on the body supporting plate in the prone position, the head of the patient is naturally placed on the prone headrest, the arm naturally grips the holding rod, the neutral position of the central axis of the spinal column is kept, and the phenomenon of back torsion is avoided. The abdomen of the patient is positioned at the hollow-out position of the fixing frame and naturally sags, so that the small intestine and the bladder are far away from the rectal target area, and the irradiation amount of normal tissues is reduced. The invention can ensure the consistent body position height of the patient during each radiotherapy, improve the comfort of the patient and ensure the stability of the body position of the patient during the treatment.

Description

Position fixing device for radiotherapy of rectal cancer patient

Technical Field

The invention belongs to the field of medical instruments, relates to a medical body position fixing device, and particularly relates to a body position fixing device for radiotherapy of a rectal cancer patient.

Background

The number of patients with rectal cancer receiving radiation therapy has increased in recent years. In radiation therapy, multiple exposures of a tumor site with X-rays are required to maintain a fixed, repeatable position of the patient on the couch.

In the radiation therapy of rectal cancer, in order to protect the small intestine, a hollow rectum-dedicated fixing frame is generally adopted as a posture fixing device at present. When the device is used, a patient lies prostrate on the device, the abdomen is placed at the hollow-out position of the fixing frame, the head is deviated to one side and placed at the front end of the device, and the arm encircles the top end of the head. This device can only fix patient's abdomen, can't fix patient's back of the head and upper limbs. Therefore, when a patient is treated each time, the deviation angle of the head, the bending degree of the back and the placing position of the arms are large, and placing errors are easily caused. In addition, the head of the patient always keeps deflecting in the treatment process, so that the comfort level is poor, and the posture of the patient is easy to change in the treatment process.

Disclosure of Invention

The invention aims to provide a body position fixing device for radiotherapy of a patient with rectal cancer, which mainly comprises a body supporting plate, a prone position headrest and a holding rod, wherein one end of the body supporting plate is a U-shaped notch, the holding rod is vertically arranged at two end heads of the U-shaped notch and is used for being held by two hands of the patient when the patient lies prone, a clamping groove is arranged at the inner edge of the U-shaped notch, and head scales are arranged on the U-shaped notch of the body supporting plate so as to be aligned with and recorded on a marking line on the skin of the patient. The other end of health layer board is equipped with individual leg and holds in the palm, and the leg holds in the palm the shape and suits with shank curvature shape, and health layer board interlude is equipped with oval cambered surface recess, and oval cambered surface recess suits with human belly curvature, is close to the square binder that the leg held in the palm was equipped with in the cambered surface recess, and square binder pierces through the health layer board, is equipped with the radiotherapy scale in health layer board side.

Prostrate headrest is one side and opens jagged square, be equipped with individual stabilizer blade, it has headrest face hole to open in the centre, it is ventilative to supply the convenient patient when pronating, bottom at individual stabilizer blade is equipped with the draw-in groove tooth, the draw-in groove tooth suits with the draw-in groove, it can slide around in the U-shaped notch of health layer board to pronate the headrest, the U-shaped notch that inserts the health layer board is held to the breach end of the headrest that will pronate, it is fixed with the health layer board to pronate headrest through draw-in groove tooth and draw-in groove 9, can not slide at will, be equipped with the instruction arrow point at a corner of the headrest of pronating, can adjust the position and the record of headrest according to patient's height, so that keep same fixed position in many times treatment. The clamping groove and the clamping groove teeth are both in a sawtooth shape.

A circle of soft cushion is laid on the face of the headrest, so that the comfort of a patient is improved.

The invention adopts a prone type design, and the head and the arms of the patient are respectively provided with the prone headrest and the holding rod, so that the position fixing device which is designed for the patient with rectal cancer and has higher repeated positioning precision and higher comfort level is obtained. The fixed position of the same patient is marked by 2 scales so as to ensure the accuracy of radiotherapy.

Compared with the prior art, the adjustable head rest and the hand grip are added, so that the comfort level of a patient suffering from rectal cancer radiotherapy is increased. Because the position of headrest can be adjusted and fixed according to patient's height, compare with current positioner that does not have headrest and tongs, can fix patient's position better, reduce radiotherapy's error. The body position fixing device adopts a prone type design, when a patient with rectal cancer is subjected to radiation therapy, the patient lies on the body supporting plate in the prone mode, the head of the patient is naturally placed on the head pad, the arm naturally grips the holding rod, the neutral position of the central axis of the spine is kept, and the phenomenon of back torsion is avoided. The abdomen of the patient is positioned at the hollow-out position of the fixing frame and naturally sags, so that the small intestine and the bladder are far away from the rectal target area, and the irradiation amount of normal tissues is reduced. The invention can ensure the consistent body position height of the patient during each radiotherapy, improve the comfort of the patient and ensure the stability of the body position of the patient during the treatment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Figure 2 is a schematic view of a body pallet configuration.

Fig. 3 is a schematic view of the headrest structure.

Detailed Description

The invention is further explained by the accompanying drawings and examples.

Example 1

Referring to fig. 1-3, a body position fixing device for radiotherapy of a patient with rectal cancer mainly comprises 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 end heads of the U-shaped notch and is used for holding the patient in a prone mode by two hands, a clamping groove 9 is arranged at the inner edge of the U-shaped notch, and head scales 8 are arranged on the U-shaped notch of the body supporting plate 1 so as to be aligned with and record mark lines on the skin of the patient. The other end of health layer board 1 is equipped with 2 legs and holds in the palm 6, and the leg holds in the palm 6 shape and suits with shank curvature shape, and 1 interlude of health layer board is equipped with oval cambered surface recess 4, and oval cambered surface recess 4 suits with human belly curvature, is close to square binder 5 that the leg held in the palm 6 and is equipped with in cambered surface recess 4, and square binder 5 pierces through health layer board 1, is equipped with radiotherapy scale 7 in 1 side of health layer board.

Prostrate headrest 2 is the square that one side was opened jaggedly, be equipped with 4 stabilizer blades, it has headrest face 10 to open in the middle, it is ventilative to supply the convenient patient when pronating, bottom at 4 stabilizer blades is equipped with draw-in groove tooth 12, draw-in groove tooth 12 suits with draw-in groove 9, it can slide around in the U-shaped notch of health layer board 1 to pronate headrest 2, the U-shaped notch that inserts health layer board 1 will pronate the breach end of headrest 2, it is fixed with health layer board 1 to pronate headrest 2 through draw-in groove tooth 12 and draw-in groove 9, can not slide at will, be equipped with instruction arrow 11 at a corner of prostrate headrest 2, can adjust the position and the record of headrest according to patient's height, so that keep same fixed position in many treatments. The clamping groove 9 and the clamping groove teeth 12 are both in a sawtooth shape.

A circle of soft cushion is laid on the headrest face hole 10, so that the comfort of a patient is improved.

Example 2

The patient is when first location CT scan, pronate on health layer board 1, arrange the belly in cambered surface recess 4, lower belly nature flagging is arranged in square binder hole 5, the leg is arranged in and is held 6 departments in the shank, fixed holding rod 3 is held to both hands, it puts comfortable position to pronate headrest 2 according to the height adjustment, put into headrest face 10 with the face, and according to the head scale 8 record suitable position scale of instructing arrow 11 alignment on the prone headrest 2, make things convenient for accurate counterpoint when same patient radiotheraphy once more. After lying, the patient sticks a positioning mark on the skin at the position of the center of the radiotherapy target area corresponding to the skin, and records the coordinate corresponding to the marking line at the position of the radiotherapy scale 7.

When the radiotherapy is carried out on the same patient every time, the steps are repeated according to the recorded headrest position, and the repeated positioning precision of the patient is ensured to meet the radiotherapy requirement.

Compared with the prior art, the adjustable head rest and the hand grip are added, so that the comfort level of a patient suffering from rectal cancer radiotherapy is increased. Because the position of headrest can be adjusted and fixed according to patient's height, compare with the positioner of current no headrest and tongs, can fix patient's position better, reduce radiotherapy's error, also improve patient's comfort level simultaneously.

Claims

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).