CN211068802U

CN211068802U - Prone position retention device for radiotherapy

Info

Publication number: CN211068802U
Application number: CN201921488268.9U
Authority: CN
Inventors: 林伟梧; 马拥利
Original assignee: Klarity Medical & Equipment Gz Co ltd
Current assignee: Klarity Medical & Equipment Gz Co ltd; KLARITY MEDICAL AND EQUIPMENT (GZ) CO Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-07-24
Anticipated expiration: 2029-09-06

Abstract

The utility model relates to the technical field of medical equipment, a prone position maintenance device for radiotherapy is disclosed, it includes moulding device and the supporting seat that supplies the human body to lie prostrate, be equipped with the fixed position by protruding and/or sunken formation on the supporting seat, moulding device is installed in the fixed position. The utility model provides a prone position retention device for radiotherapy can guarantee that the patient keeps a posture for a long time to patient's position is unanimous when guaranteeing treatment at every turn, ensures the treatment precision.

Description

Prone position retention device for radiotherapy

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a prone position retention device for radiotherapy.

Background

In radiation therapy, a patient typically leans on a prone position retention device for radiation therapy to protect the patient's heart-lung tissue and other vital organs from the radiation. Because the prone posture can not be kept for a long time, the patient has larger movement during each treatment, and the treatment effect is affected. Moreover, each time the patient is treated, the technician needs to spend a long time adjusting the posture and position of the patient to ensure that the posture is consistent during each treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prone position retention device for radiotherapy, it can guarantee that the patient keeps a posture for a long time to guarantee that patient's position is unanimous when handling at every turn, ensure the treatment precision.

In order to achieve the above object, the embodiment of the present invention provides a prone position fixing device for radiotherapy, which comprises a shaping device and a supporting seat for the human body to lie prone, wherein the supporting seat is provided with a fixing position formed by a protrusion and/or a recess, and the shaping device is installed in the fixing position.

Preferably, the supporting seat comprises a head and neck supporting seat, a first lower body supporting seat and a chest supporting seat, the chest supporting seat is detachably connected with the head and neck supporting seat and the first lower body supporting seat respectively, the fixing position comprises a first pit and an installation position, the first pit is located on the first lower body supporting seat, the installation position is located on the chest supporting seat, one end of the shaping device is detachably installed in the first pit, and the other end of the shaping device covers the installation position.

Preferably, a notch is formed in one side of the chest supporting seat, and a through hole corresponding to the notch is formed in the shaping device.

Preferably, the chest support further comprises at least two chest cushion blocks for supporting the chest of a human body, the shape of each chest cushion block is different, and any one chest cushion block is detachably connected to the other side of the chest support seat.

Preferably, the other side of the chest supporting seat is provided with a recessed part, any one of the chest cushion blocks is detachably connected in the recessed part, the thickness of one of the chest cushion blocks is the same as the depth of the recessed part, and the other chest cushion blocks protrude out of the upper surface of the chest supporting seat.

Preferably, the portable electronic device further comprises a filling block, wherein the filling block is detachably arranged in the first pit.

Preferably, the upper surface of the head and neck support seat is connected with a head support block, and the head support block can slide back and forth along the direction from the head and neck support seat to the first lower body support seat.

Preferably, the supporting seat comprises an upper body supporting seat and a second lower body supporting seat connected with the upper body supporting seat, and the fixing position is located on the second lower body supporting seat.

Preferably, the fixing position is a second concave pit arranged on the second lower body supporting seat.

Preferably, the foot support seat further comprises a foot support seat, and the foot support seat is located at one end of the support seat.

To sum up, the embodiment of the utility model provides a prone position maintenance device for radiotherapy is equipped with moulding device, and moulding device is got and is appeared in the human body profile under the patient prone position, and plasticity is stereotyped, improves the comfort level of patient under the gesture of pronating, makes the patient can keep same prone position for a long time, has ensured treatment accuracy effectively. The shaping device is detachably connected to the supporting seat through fixing positions formed by the bulges and/or the depressions, and after the treatment is finished, a technician can take down the shaping device and reserve the shaping device for the next treatment. In the treatment afterwards, the shape of the shaping device is unchanged, the shape of the human body of the patient in the prone posture is kept, and a technician does not need to adjust the body position of the patient before treatment at each time, so that the patient can quickly keep an accurate treatment posture, and the treatment efficiency is improved.

Drawings

Fig. 1 is a perspective view of a prone position retention device for radiotherapy according to an embodiment of the present invention;

fig. 2 is an exploded view of a prone position fixing device for radiotherapy provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an adjusting device according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a shaping device according to an embodiment of the present invention;

fig. 5 is a perspective view of a prone position fixing device for radiotherapy provided by the second embodiment of the present invention;

fig. 6 is a schematic structural diagram of a shaping device according to a second embodiment of the present invention;

fig. 7 is a schematic structural view of a second lower body supporting base according to the second embodiment of the present invention.

Reference numerals:

1. a shaping device, 2, a first pit, 3, a support base, 4, a head and neck support base, 5, a first lower half body support base, 6, a chest support base, 7, a chest cushion block, 8, a recess, 9, an adjusting plate, 10, a protrusion, 11, a first recess, 12, a head support block, 13, an adjusting device, 14, a hinge, 15, an adjusting hole, 16, a sliding chute, 17, a slider, 18, a graduation line, 19, a first grip, 20, a blind hole, 21, a first mounting base plate, 22, a foot support base, 23, an upper half body support base, 24, a second lower half body support base, 25, a first opening, 26, a second opening, 27, a base plate, 28, a mounting position, 29, a support block, 30, a second grip, 31, a connecting plate, 32, an adjusting rod, 33, a fixing block, 34, a second recess, 35, a third opening, 36, a fourth opening, 37, a bent nozzle, 38, and a filling block, 39. notch 40, through hole 41, second installation bottom plate 42, filler 43, second pit.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example one

As shown in fig. 1 to 4, the embodiment of the present invention provides a prone position fixing device for radiotherapy, which comprises a shaping device 1 and a supporting seat 3 for the human body to lie on the stomach, wherein the supporting seat 3 is provided with a fixing position formed by protrusions and/or depressions, and the shaping device 1 is installed in the fixing position.

Based on above-mentioned technical scheme, supporting seat 3 can be put on relevant radiotherapy equipment. The shaping device 1 may be a vacuum pad or a shaping pad, and the shaping device may be made of foamed glue. For example, the shaping device 1 may be a vacuum fixing bag disclosed in publication No. CN204319525U, a shaping pad disclosed in publication No. CN203609553U, or a foam rubber for posture fixation of a whole body part tumor in radiotherapy, disclosed in publication No. CN 209005064U. In the treatment, the method of using the shaping device 1 can refer to the method of using the shaping pad disclosed in publication No. CN203609553U, and a technician places the softened shaping device 1 on a fixing position, and presses the patient on the shaping device 1 in a prone posture. The shaping device 1 can take the human body shape of the patient facing the ground when lying prone, and carries out personalized shaping according to the body shape of the patient, guarantees that the patient keeps the same prone posture when receiving radiotherapy, also is favorable to accurately letting the patient keep the position when treating last time fast, and the technician no longer needs to repeatedly position the patient, reduces the labor intensity of the technician, also can guarantee treatment precision at every turn. After the treatment is finished, the patient leaves, and the technician can take the shaping device 1 with the shape of the body of the patient from the fixing position, place the shaping device 1 at the designated position, store the shaping device under the appropriate condition, and leave the patient for the next treatment and take the shaping device out for use. The supporting seat 3 is provided with a fixing position consisting of a protrusion or a recess, and the fixing position is used for being matched with the shaping device 1, so that the shaping device 1 can be placed on the supporting seat 3. When different patients receive treatment, only different shaping devices 1 need to be replaced. In the present embodiment, the shaping device 1 has a length of 93cm and a width of 81cm, the through-hole 40 has a rectangular shape with rounded corners, and the through-hole 40 has a length of about 21cm and a width of 19 cm.

Preferably, the supporting seat 3 comprises a head and neck supporting seat 4, a first lower body supporting seat 5 and a chest supporting seat 6, the chest supporting seat 6 is detachably connected with the head and neck supporting seat 4 and the first lower body supporting seat 5 respectively, the fixing position comprises a first pit 2 and an installation position, the first pit 2 is positioned on the first lower body supporting seat 5, the installation position is positioned on the chest supporting seat 6, one end of the shaping device 1 is detachably installed in the first pit 2, and the other end of the shaping device 1 covers the installation position. The head and neck support seat 4 is used for supporting the head and neck of a patient, the first lower half body support seat 5 is used for supporting the lower half body of the patient, and the chest support seat 6 plays a role in supporting the chest of the patient. The chest support seat 6 is detachably connected to the head and neck support seat 3 and the first lower body support seat 5, and a technician can replace the chest support seat 6 conveniently. The first recess 2 is used for fixing the shaping device 1. In the using state, the technician directly places the shaping device 1 in the first concave pit 2, so that the shaping device 1 covers the mounting position on the chest supporting seat 6.

Specifically, a notch 39 is formed in one side of the chest supporting seat 6, and a through hole 40 corresponding to the notch 39 is formed in the shaping device 1. The gap 39 allows passage of radiation to irradiate the diseased breast tissue of the patient. The notch 39 corresponds to the through hole 40, and the shaping device 1 covers the chest support seat 6 in the treatment state. The shaping device 1 can take the shape of the back chest of a patient lying down, and can fix the position of the patient in the backward treatment. The through-holes 40 allow the breast to be treated to pass through and naturally droop. The patient's breast is passed through the through-hole 40 and the gap 39 in sequence for irradiation. Preferably, the shape of the notch 39 is circular arc. A notch 39 is arranged on one side of the chest supporting seat 6, and a through hole 40 corresponding to the notch 39 is arranged on the shaping device 1. The gap 39 allows passage of radiation to irradiate the diseased breast tissue of the patient. The notch 39 corresponds to the through hole 40, and the shaping device 1 covers the chest support seat 6 in the treatment state. The shaping device 1 can take the shape of the back chest of a patient lying down, and can fix the position of the patient in the backward treatment. The through-holes 40 allow the breast to be treated to pass through and naturally droop. The patient's breast is passed through the through-hole 40 and the gap 39 in sequence for irradiation. Preferably, the shape of the notch 39 is circular arc.

Furthermore, the utility model provides a prone position retention device for radiotherapy still includes at least two chest cushion blocks 7 that are used for supporting human chest, and each chest cushion block 7 shape all is different, and arbitrary chest cushion block 7 detachably connects the opposite side at chest supporting seat 6. The chest support base 6 is used to protect healthy chest tissue. More than two chest bolsters 7 facilitate the technician to change different chest bolsters 7 according to the patient's body contour. The chest supporting seat 6 is provided with a concave part 8, any chest cushion block 7 is detachably connected in the concave part 8, the thickness of one chest cushion block 7 is the same as the depth of the concave part 8, and other chest cushion blocks 7 protrude out of the upper surface of the chest supporting seat 6. In the embodiment, the shape of the concave part 8 is a rectangle with round corners, two chest cushion blocks 7 are arranged, and the two chest cushion blocks 7 can be used alternatively. One of the chest cushion blocks 7 is cuboid, and arc-shaped groove bodies are formed in two sides of the chest cushion block, so that a technician can take out the chest cushion block 7 from the concave part 8 conveniently. The thickness of the chest cushion block 7 is the same as the depth of the concave part 8, and the chest cushion block 7 can be placed in the concave part 8 when the prone position chest positioning device is not in use, so that the inner wall of the concave part 8 is prevented from being stained with dust. The longitudinal section of the other breast cushion block 7 is in a right trapezoid shape, the oblique side faces upwards, the breast cushion block is used for squeezing out healthy breast tissues to prevent ray irradiation, and the breast cushion block has a protection effect.

In this embodiment, the chest supporting seat 6 is symmetrically arranged along the direction perpendicular to the neck supporting seat 4 to the first lower body supporting seat 5, that is, the structure and shape of the joint between the chest supporting seat 6 and the neck supporting seat 4 and the joint between the chest supporting seat 6 and the first lower body supporting seat 5 are the same. Correspondingly, the joint of the head and neck support seat 4 and the chest support seat 6 and the joint of the first lower half body support seat 5 and the chest support seat 6 have the same structure and shape. The chest supporting seat 6 can still be detachably connected with the head and neck supporting seat 4 and the first lower body supporting seat 5 after rotating 180 degrees in the horizontal direction. The technician can rotate the chest support seat 6 according to different lesion parts of different patients, so that the notch 39 is positioned on the left chest or the right chest of the patient. For example, the patient's nail needs to be irradiated on the left chest, and the technician may rotate the chest support base 6 to position the notch 39 on the left chest of the patient's nail. Patient b needs to be radiographed to the right chest and the technician can rotate the chest support base 6 180 degrees so that the notch 39 is located on the right chest of patient a. In this embodiment, the two ends of the chest support seat 6 connected to the head and neck support seat 4 and the first lower body support seat 5 are provided with the convex portions 10, the head and neck support seat 4 and the first lower body support seat 5 are provided with the first concave portions 11 that are in positioning fit with the convex portions 10, and the chest support seat 6 is placed in the first concave portions 11 on the head and neck support seat 4 and the first concave portions 11 on the first lower body support seat 5, thereby achieving detachable connection of the chest support seat 6 to the head and neck support seat 4 and the first lower body support seat 5. The shape of the convex portion 10 and the first concave portion 11 may be an arc shape.

The utility model provides a prone position retention device for radiotherapy still includes the filling block 38, and filling block 38 detachably connects in first pit 2. The first concave part 2 is used for fixing the shaping device 1, and in a use state, a technician can directly place the shaping device 1 in the first concave part 2. The filling block 38 is detachably connected in the first pocket 2. In the non-use state, the technician takes out the molding device 1 from the first recess 2, and can place the filling block 38 in the first recess 2 in order to prevent dust from adhering to the inner wall of the first recess 2.

Preferably, the head support block 12 is connected to the upper surface of the head and neck support seat 4, and the head support block 12 can slide back and forth along the direction from the head and neck support seat 4 to the first lower body support seat 5. The head support block 12 is mainly used for supporting the head of a patient, the head support block 12 can slide on the head and neck support seat 4, a technician can properly adjust the position of the head support block 12 relative to the head and neck support seat 4 according to the head position of the patient, the comfort level of the patient is improved, the patient is guaranteed to keep the same prone posture for a long time, and the head and neck support seat 4 is also suitable for each patient.

In this embodiment, the head support block 12 is slidably connected to the whip stock 4 by an adjustment device 13. The adjusting device 13 is used for connecting the head support block 12 and the neck support seat 4, and can adjust the position of the head support block 12 on the neck support seat 4. Further, adjusting device 13 includes connecting plate 31 and two regulation poles 32 that set up relatively, the bottom and the 4 sliding connection of neck portion supporting seat of connecting plate 31, head support block 12 is close to the one end of chest supporting seat 6 and passes through hinge 14 with connecting plate 31 and articulates, two regulating plates 9 that set up relatively of vertical fixedly connected with respectively in the both sides of connecting plate 31, set up two at least regulation holes 15 that use hinge 14 to set up as centre of a circle circumference on regulating plate 9, adjust

pole

32 and 15 location fit of regulation hole, adjust the bottom butt that pole 32 passed regulation hole 15 and head support block 12. The hinge 14 may secure the connection plate 31 to the head support block 12. At least two adjusting holes 15 are formed in the adjusting plates 9 on two sides of the head supporting block 12 at intervals, the adjusting holes 15 are circumferentially arranged by taking the hinge 14 as a circle center and taking the distance between the adjusting holes 15 and the hinge 14 as a radius. The adjusting rod 32 is inserted into the adjusting holes 15 at different heights and abuts against the bottom of the head supporting block 12 to adjust the size of the included angle between the head supporting block 12 and the horizontal line. In the present embodiment, the connection base plate 27 is fixedly connected to the bottom of the head support block 12, and the end of the adjustment lever 32 abuts against the bottom of the connection base plate 27. Three adjusting holes 15 are formed in each adjusting plate 9, and A, B, C are respectively carved beside each adjusting hole 15 so as to record the height position of the head of the patient technically. The head and neck support seat 4 is provided with a sliding chute 16, the bottom of the connecting plate 31 is fixedly connected with a sliding block 17, and the sliding block 17 is in sliding connection with the sliding chute 16. The chute 16 is provided along the longitudinal direction of the head and neck support 4 on the center line of the head and neck support 4. The head support block 12 is slidable in the longitudinal direction of the whip support 4. The slide channel 16 is provided with graduation marks 18 along both sides thereof to facilitate a technician in noting the position of the head support block 12 and quickly adjusting the position of the head support block 12 in a backward treatment. The adjusting device 13 can not only adjust the included angle between the head support block 12 and the horizontal line, but also adjust the position of the head support block 12 on the head and neck support seat 4.

Particularly, the head and neck support seat 4 may further be provided with two first holding rods 19 symmetrically arranged along a center line of the head and neck support seat 4, and the first holding rods 19 are located on one side of the head support block away from the chest support seat 6. The two sides of the scale mark 18 are respectively provided with three blind holes 20 which are matched with the bottom of the first holding rod 19 in a positioning way, and the blind holes 20 positioned on the same side are arranged at intervals along the length direction of the head and neck supporting seat 4. The technician can insert the first holding rod 19 into the corresponding blind hole 20 according to the body proportion of the patient, so as to improve the comfort of the patient when lying on the stomach. In the treatment process, the patient holds the first holding rod 19 by hands, so that the aim of limiting the random movement of the hands of the patient is fulfilled.

It is worth mentioning that the utility model provides a prone position chest positioner for radiotherapy still includes first mounting plate 21, and the equal fixed mounting of neck supporting seat 4 and first lower body supporting seat 5 is on first mounting plate 21. The first mounting base plate 21 may be fixed to the relevant apparatus for radiotherapy.

In addition, the prone position fixing device for radiotherapy further comprises a foot supporting seat 22, and the foot supporting seat 22 is positioned at one end of the supporting seat 3. The leg support base 3 is not connected to the first mounting base plate 21, and is placed at the end of the first lower body support base 5 remote from the chest support base 6, so that the technician can adjust the position of the foot support base 22 according to the leg length of the patient.

Example two

Referring to fig. 5 to 7, the present embodiment is different from the first embodiment in that: the prone position retention device for radiotherapy can be used for radiotherapy of pelvic tumors, prostate tumors and rectal tumors. The supporting seat 3 comprises an upper body supporting seat 23 and a second lower body supporting seat 24 connected with the upper body supporting seat 23, and the fixing position is positioned on the second lower body supporting seat 24. The shaping device 1 is used for fixing the pelvic cavity position of a patient. The fixing position is a second concave pit 43 arranged on the second lower body supporting seat 24. When not in use, the second concave pit 43 can be filled with the filling body 42, and the inner wall of the second concave pit 43 is prevented from being stained with dust.

In this embodiment, the upper body support 23 and the second lower body support 24 are detachably connected, the upper body support 23 is provided with a first opening 25, the second lower body support 24 is provided with a second opening 26, the opening of the first opening 25 and the opening of the second opening 26 are oppositely arranged, a hollow area for exposing the abdomen of the human body is formed, and the pit 2 is located on the second lower body support 24. Radiation may be directed through the hollowed-out region to the abdomen of the patient. The first opening 25 and the second opening 26 are both arc-shaped, and form a hollow area with an arc-shaped cross section. The first opening 25 is arranged at one end of the upper body support seat 23 close to the second lower body support seat 24, and the junction of the upper body support seat 23 and the first opening 25 is in smooth transition and is in a streamline shape. Similarly, the second opening 26 is arranged at one end of the second lower body support 24 close to the upper body support 23, and the joint of the second lower body support 24 and the second opening 26 is in smooth transition and streamline shape, so that the comfort of the patient in the prone posture is improved.

Preferably, the support base 3 further comprises a first mounting base plate 41, the first mounting base plate 41 is provided with at least two mounting positions 28, each mounting position 28 is arranged along the direction from the upper body support 23 to the second lower body support 24 at intervals, the upper body support 23 is detachably connected to any mounting position 28, and the second lower body support 24 is mounted on the first mounting base plate 41. In the present embodiment, the direction from the upper body support seat 23 to the second lower body support seat 24 can be defined as the length direction of the upper body support seat 23 or the length direction of the first installation bottom plate 41. Each mounting position 28 is arranged along the length direction of the upper body support seat 23, and a technician can mount the upper body support seat 23 on one of the mounting positions 28 according to the body length proportion of a patient and treatment needs, so that the upper body support seat 23 is close to or far away from the second lower body support seat 24, thereby adjusting the size of the hollowed-out area, and the abdomen fixing device is suitable for patients with different heights, is beneficial to fixing the abdominal cavity of the patient and further improves the treatment effect.

In this embodiment, a support block 29 for supporting the head of the patient and second grip levers 30 symmetrically arranged along the center line of the upper body support 23 are slidably connected to the upper body support 23, the support block 29 is installed at the center of the upper body support 23, and each second grip lever 30 is located at one end of the support block 29 away from the second lower body support 24. The second grip 30 is held by the patient for limiting the movement of the patient's hand.

The second lower body support seat 24 is vertically and fixedly connected with a fixing block 33 for separating the legs of the human body, so that the legs of the patient can be automatically opened after the patient lies down, and the fixing block 33 is pressed against the crotch of the patient to limit the movement of the patient. The cross-sectional shape of the shaping device 1 in the unused state is rectangular, and in order to fit the fixed block 33, the shaping device 1 is provided with a second recess 34 having a rectangular shape near the fixed block, that is, the cross-sectional shape of the shaping device 1 in the unused state is concave, and the recessed portion fits the fixed block 33. The second concave portion 34 has a length of 10cm, and two elongated third openings 35 having a length of 6cm are opened along both sides of the second concave portion 34, so that a technician can conveniently place the shaping device 1 in the concave pit 2. The middle part of the shaping device 1 is also provided with a fourth opening 36 with the length of 20cm, so that the shaping device 1 can be bent conveniently. The shaping device 1 is further provided with a bending nozzle 37.

Except for the above differences, other structures of the present embodiment are the same as those of the first embodiment, and corresponding effects and principles are also the same, which are not described herein again.

It should be understood that the present invention uses the terms "first", "second", "third", "fourth", etc. to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a prone position maintenance device for radiotherapy which characterized in that, includes moulding device and the supporting seat that supplies the human body to lie prostrate, be equipped with the fixed position by protruding and/or sunken formation on the supporting seat, moulding device is installed in the fixed position.

2. The prone position retention device for radiotherapy as claimed in claim 1, wherein the supporting seat comprises a head and neck supporting seat, a first lower body supporting seat and a chest supporting seat, the chest supporting seat is detachably connected with the head and neck supporting seat and the first lower body supporting seat respectively, the fixing position comprises a first concave pit and a mounting position, the first concave pit is located on the first lower body supporting seat, the mounting position is located on the chest supporting seat, one end of the shaping device is detachably mounted in the first concave pit, and the other end of the shaping device covers the mounting position.

3. The prone position fixing device for radiotherapy as claimed in claim 2, wherein a notch is formed at one side of the chest supporting seat, and a through hole corresponding to the notch is formed on the shaping device.

4. The prone position retention device for radiotherapy as claimed in claim 3, further comprising at least two breast pads for supporting the breast of the human body, each of the breast pads having a different shape, any one of the breast pads being detachably connected to the other side of the breast support base.

5. The prone position retention device for radiotherapy as claimed in claim 4, wherein the other side of the chest supporting seat is provided with a recess, any one of the chest pads is detachably connected in the recess, one of the chest pads has the same thickness as the depth of the recess, and the other chest pads protrude from the upper surface of the chest supporting seat.

6. The prone position retention device for radiation therapy of claim 2 further comprising a filler block removably mounted in the first pocket.

7. The prone position retention device for radiotherapy as claimed in claim 2, wherein a head support block is connected to the upper surface of the neck support seat, and the head support block can slide back and forth along the direction from the neck support seat to the first lower body support seat.

8. The prone position fixing device for radiotherapy as claimed in claim 1, wherein the supporting seat comprises an upper body supporting seat and a second lower body supporting seat connected with the upper body supporting seat, and the fixing position is located on the second lower body supporting seat.

9. The prone position retention device for radiotherapy as claimed in claim 8, wherein the fixing position is a second recess formed on the second lower body supporting seat.

10. The prone position retention device for radiation therapy of any one of claims 1 to 9 further comprising a foot support base located at one end of the support base.