Patient body position fixing device for tumor radiotherapy

Abstract

The invention belongs to the technical field of tumor radiotherapy, particularly relates to a patient body position fixing device for tumor radiotherapy, and provides the following scheme aiming at the problems that an existing radiotherapy bed only plays a certain limiting role and cannot achieve an omnibearing fixing effect, and a patient can still do actions such as lifting legs and hands, standing up, lying, turning over and the like during treatment. Comprising a radiotherapy bed, one end of the radiotherapy bed is fixedly connected with a head frame, non-woven bed cloth is laid between the top end of the radiotherapy bed and the interior of the head frame, and first notches are formed in one ends of the outer walls of the two sides of the radiotherapy bed. A patient lies on the radiotherapy bed firstly, then a medical worker adjusts a first adjusting piece and a second adjusting piece according to the body of the patient, so that a first pressing piece and a second pressing piece can be attached to the body of the patient after rotating and lowering, the medical worker manually rotates an adjusting rod, and two customized limiting frames get close to each other until the shoulders, the arms and the neck of the patient are limited and clamped; movement of the head, neck, shoulders and arms of the patient is effectively limited, and fixation of the upper body of the patient is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of tumor radiotherapy, and in particular to a patient position fixing device for tumor radiotherapy. Background Art

[0002] Tumor radiotherapy is a method of treating tumors using radiation. The radiotherapy process is relatively complicated and requires precise coordination of multiple steps to ensure that the radiation can accurately irradiate the tumor area while maximally protecting the surrounding normal tissues. The position of human organs will change due to voluntary and involuntary movements, causing the body contour to change. In order to ensure good position repeatability for each radiotherapy, the patient needs to be fixed in position. As radiotherapy technology has entered a precise era with precise positioning, precise planning, and precise treatment as the core, the tumor target area has become more and more precise. The premise for achieving precise treatment is that the patient needs to have good position fixation. Different radiotherapy equipment requires different position fixation devices to achieve more precise radiotherapy targets, less doses to surrounding normal tissues, improve patient comfort and repeatability of treatment, and reduce positioning errors during treatment. Therefore, good position fixation is the key to implementing treatment.

[0003] After searching, the patent publication number CN114129914B discloses a patent named "A patient position fixation device for tumor radiotherapy". The technical problem to be solved is that due to the fixed shape of the bed, it is difficult to adapt to the comfortable fixation of different patients. At the same time, during chemotherapy, the patient needs to maintain a certain posture for a long time, but long-term fixation is easy to increase the patient's discomfort, which is not conducive to the patient's stable fixation and precise chemotherapy. The hot melt adhesive in the molten pool is heated and softened by an electric heating wire. Then the patient lies flat on the non-woven fabric and squeezes the sliding rod, so that the sliding rods in different positions slide different distances and provide highly fitting support for the patient's different body shapes, increasing the patient's comfort, reducing the patient's discomfort and shaking during chemotherapy, further increasing the fixation effect of the bed on the patient, and keeping the patient comfortably and stably fixed on the bed for a long time, further increasing the accuracy of chemotherapy, and reducing unnecessary radiation damage.

[0004] However, the following drawbacks still need to be addressed: when patients undergo radiotherapy for tumors, they will lie flat on the radiotherapy bed. The radiotherapy bed only plays a certain limiting role and cannot achieve an all-round fixation effect. Patients can still lift their legs and hands, stand up, lie down and turn over during treatment. Some patients experience discomfort during treatment, which can lead to problems of offset movement, resulting in changes in body position, affecting the accuracy and effectiveness of radiotherapy. Summary of the invention

[0005] Based on the technical problem that the existing radiotherapy beds only play a certain limiting role and cannot achieve an all-round fixing effect, and the patient can still perform actions such as lifting legs and hands, standing up, lying down and turning over during treatment, the present invention proposes a patient position fixing device for tumor radiotherapy.

[0006] The present invention provides a patient position fixing device for tumor radiotherapy, comprising a radiotherapy bed, one end of which is fixedly connected to a head frame, and a non-woven bed cloth is laid between the top of the radiotherapy bed and the inside of the head frame, a first notch is opened at one end of the outer wall of both sides of the radiotherapy bed, and a second notch is opened at the other end of the outer wall of both sides of the radiotherapy bed, guide rods are fixedly connected between the inner walls at both ends of the first notch and the second notch, and a first adjusting piece is slidably arranged between the two first notches, and a second adjusting piece is slidably arranged between the two second notches, and the opposite end of the second adjusting piece is plugged with A second pressing piece, and arc-shaped protrusions are arranged on both sides of the end of the second pressing piece, a plurality of second limiting belts are fixedly installed inside the second pressing piece, a first pressing piece is inserted into the opposite end of the first adjusting piece, and the middle of the outer end of the first pressing piece is concave, a plurality of first limiting belts are fixedly installed inside the first pressing piece, a pressing frame is fixedly connected to the middle of the outer end of the first pressing piece, a bidirectional screw rod is rotatably installed inside the pressing frame, and movable frames are rotatably sleeved on both sides of the circumference of the bidirectional screw rod, a positioning limiting frame is inserted into the bottom end of each of the movable frames, and a heat dissipation and ventilation strip is inserted into the inner side of the positioning limiting frame.

[0007] Preferably, an extension bracket is slidably mounted on the outer wall of the other end of the radiotherapy bed, and both sides and the middle of the top of the extension bracket are concave, and a buffer pad is laid on the top of the extension bracket.

[0008] Preferably, the first adjusting member and the second adjusting member both include a moving member and a U-shaped gear frame, three fixed plates are fixedly installed at the bottom end of the radiotherapy bed, and a screw is rotatably installed between every two adjacent fixed plates through a bearing, the middle of the moving member is rotatably sleeved with the screw, the two sides of the moving member are slidably sleeved with the guide rod, and transmission gears are fixedly installed at the opposite ends of the two screws.

[0009] Preferably, the bottom end of the U-shaped tooth frame is meshed with the bottom end of the circumference of the transmission gear, a push piece is fixedly connected to the outer wall of one side of the U-shaped tooth frame, the upper end of the U-shaped tooth frame is set to be T-shaped, and T-shaped slide grooves are provided at both ends of the bottom end of the radiotherapy bed, and the upper end of each U-shaped tooth frame is slidably located inside the T-shaped slide groove.

[0010] Preferably, rectangular tubes are fixedly mounted at both ends of the top of the moving part, and a lifting rod is slidably mounted inside the rectangular tube, a vertical rod is rotatably mounted on the top of the lifting rod, and a plurality of jacks are opened in the middle of the vertical rod.

[0011] Preferably, a plurality of adjustment sockets are provided on both sides of the rectangular tube, a positioning hole is provided at the bottom end of the lifting rod, and a plug-in is inserted between the bottom end of each group of lifting rods and one row of adjustment sockets of the rectangular tube, and the inner side of the plug-in is magnetically attracted to the outer wall of the rectangular tube.

[0012] Preferably, the inner sides of both sides of the first pressure piece and the outer sides of both sides of the second pressure piece are fixedly connected with insertion rods, and the insertion rods match the insertion holes, the circumference of the first pressure piece, the circumference of the second pressure piece and the circumference of the arc-shaped protrusion are all covered with anti-slip and breathable cloth covers, and an airbag bag is provided at the bottom end of the arc-shaped protrusion.

[0013] Preferably, both sides of the first limiting belt and the second limiting belt are set as elastic sections, the middle of the first limiting belt and the second limiting belt are set as breathable inelastic sections, and a buffer airbag strip is set at the bottom between the first limiting belt and the second limiting belt.

[0014] Preferably, an adjusting rod is rotatably mounted on one side of the top end of the pressing frame, and a bevel gear transmission assembly is fixedly arranged between the bottom end of the adjusting rod and one side of the circumference of the bidirectional screw rod.

[0015] Preferably, the customized limiting frame is mainly composed of an L-shaped frame, and an arc-shaped frame is fixedly connected to the end of the horizontal section of the L-shaped frame.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention proposes a patient position fixing device for tumor radiotherapy. The patient first lies on the radiotherapy bed, and then the medical staff adjusts the first adjusting piece and the second adjusting piece according to the patient's body, so that the first pressing piece and the second pressing piece can fit the patient's body after being rotated and lowered, wherein arc-shaped protrusions are arranged on both sides of the end of the second pressing piece, and a plurality of second limiting belts are fixedly installed inside the second pressing piece to limit the patient's lower body, wherein a plurality of first limiting belts are fixedly installed inside the first pressing piece, and a pressing frame is fixedly connected to the middle of the outer end of the first pressing piece to limit the patient's upper body, and the two-way screw rod, the movable frame, the positioning limiting frame, the adjusting rod and the bevel gear transmission assembly cooperate, and the medical staff manually rotates the adjusting rod to make the two customized limiting frames approach each other until the patient's shoulders, arms and neck are clamped, thereby effectively limiting the movement of the patient's head, neck, shoulders and arms, and further strengthening the fixation of the patient's upper body.

[0018] 2. The present invention proposes a patient position fixing device for tumor radiotherapy, in which both sides of the first limiting belt and the second limiting belt are set as elastic sections, the middle of the first limiting belt and the second limiting belt are set as breathable inelastic sections, and the bottom of the middle of the first limiting belt and the second limiting belt is provided with a buffer airbag strip, so that the first limiting belt and the second limiting belt can effectively limit the movement of the patient's body while increasing the comfort of the patient in the compressed position, and the customized limiting frame is based on the L-shaped frame, and the end of the horizontal section of the L-shaped frame is fixedly connected with an arc frame. The customized limiting frame is tailored according to the specific body shape of each patient from the neck to the elbow of the arm, and is stuffed with a heat dissipation and breathable strip to fix the patient's upper body and maintain comfort, and also enables the patient to continue to use the customized limiting frame under the light skin and deformation effect of the heat dissipation and breathable strip when edema, weight loss, etc. occur during tumor radiotherapy. The customized limiting frame is plugged into the mobile frame, and each patient uses his own positioning limiting frame during tumor radiotherapy to ensure its safety, hygiene and fitting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a patient position fixation device for tumor radiotherapy proposed by the present invention;

[0020] Figure 2 This is a structural schematic diagram of a radiotherapy bed of a patient position fixing device for tumor radiotherapy proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a radiotherapy bed of a patient position fixing device for tumor radiotherapy proposed by the present invention, viewed from above;

[0022] Figure 4 This is a schematic structural diagram of a first adjusting component of a patient position fixing device for tumor radiotherapy proposed by the present invention;

[0023] Figure 5 This is a schematic structural diagram of a second pressing piece of a patient position fixing device for tumor radiotherapy proposed by the present invention;

[0024] Figure 6 This is a bottom-up structural schematic diagram of a first pressing piece of a patient position fixing device for tumor radiotherapy proposed by the present invention;

[0025] Figure 7 This is a schematic structural diagram of a bevel gear transmission assembly of a patient position fixation device for tumor radiotherapy proposed by the present invention;

[0026] Figure 8 This is a schematic structural diagram of a positioning limit frame of a patient position fixing device for tumor radiotherapy proposed by the present invention;

[0027] Fig. 9This is a schematic structural diagram of a first limiting belt and a second limiting belt of a patient position fixing device for tumor radiotherapy proposed by the present invention.

[0028] In the figure: 1 radiotherapy bed, 2 head frame, 3 non-woven bed cloth, 4 extension bracket, 5 first notch, 6 second notch, 7 guide rod, 8 first adjusting piece, 9 second adjusting piece, 10 moving piece, 11 screw, 12 transmission gear, 13 U-shaped gear frame, 14 push piece, 15 T-shaped slide, 16 fixed plate, 17 rectangular cylinder, 18 lifting rod, 19 vertical rod, 20 socket, 21 plug-in, 22 second pressing piece, 23 plug-in rod, 24 second limiting belt, 25 arc-shaped protrusion, 26 first pressing piece, 27 first limiting belt, 28 pressing frame, 29 bidirectional screw, 30 moving frame, 31 adjusting rod, 32 bevel gear transmission assembly, 33 customized limiting frame, 34 heat dissipation and ventilation strip, 35 positioning hole, 36 adjustment socket. DETAILED DESCRIPTION

[0029] Reference Figure 1-9 A patient position fixing device for tumor radiotherapy comprises a radiotherapy bed 1, one end of the radiotherapy bed 1 is fixedly connected to a head frame 2, and a non-woven bed cloth 3 is laid between the top of the radiotherapy bed 1 and the inside of the head frame 2, a first notch 5 is opened at one end of the outer wall of both sides of the radiotherapy bed 1, and a second notch 6 is opened at the other end of the outer wall of both sides of the radiotherapy bed 1, a guide rod 7 is fixedly connected between the inner walls at both ends of the first notch 5 and the second notch 6, and a first adjusting member 8 is slidably arranged between the two first notches 5, and a second adjusting member 9 is slidably arranged between the two second notches 6, and a second pressing member 22 is inserted at the opposite end of the second adjusting member 9, and the second pressing member 22 Arc-shaped protrusions 25 are provided on both sides of the end, a plurality of second limiting belts 24 are fixedly installed inside the second pressing piece 22, a first pressing piece 26 is inserted at the opposite end of the first adjusting piece 8, and the middle of the outer end of the first pressing piece 26 is concave, a plurality of first limiting belts 27 are fixedly installed inside the first pressing piece 26, a pressing frame 28 is fixedly connected to the middle of the outer end of the first pressing piece 26, a bidirectional screw rod 29 is rotatably installed inside the pressing frame 28, and a movable frame 30 is rotatably sleeved on both sides of the circumference of the bidirectional screw rod 29, a positioning limiting frame 33 is inserted at the bottom end of each movable frame 30, and a heat dissipation and ventilation strip 34 is inserted on the inner side of the positioning limiting frame 33.

[0030] In the present invention, an extension bracket 4 is slidably mounted on the outer wall of the other end of the radiotherapy bed 1, and both sides and the middle of the top of the extension bracket 4 are concave, and a buffer pad is laid on the top of the extension bracket 4. Pulling out the extension bracket 4 is convenient for tall people to place their calves or feet, thereby making the device suitable for patients of different heights;

[0031] The first adjusting member 8 and the second adjusting member 9 both include a moving member 10 and a U-shaped tooth frame 13. Three fixed plates 16 are fixedly installed at the bottom end of the radiotherapy bed 1, and a screw 11 is rotatably installed between every two adjacent fixed plates 16 through a bearing. The middle of the moving member 10 is rotatably sleeved with the screw 11, and the two sides of the moving member 10 are slidably sleeved with the guide rod 7, and a transmission gear 12 is fixedly installed at the opposite ends of the two screws 11. The medical staff pushes the push member 14 to make the U-shaped tooth frame 13 slide along the T-shaped slide groove 15. The moving U-shaped tooth frame 13 drives the transmission gear 12 to rotate, so that the screw 11 rotates, and then the moving member 10 moves along the guide rod 7, so as to achieve the purpose of adjusting the position of the moving member 10 and the first pressing member 26 and the second pressing member 22 on the radiotherapy bed 1. The medical staff adjusts the position of the lifting rod 18 inside the rectangular tube 17 according to the patient's body width, and the plug-in 21 locates the position of the lifting rod 18 inside the rectangular tube 17. Then, the medical staff adjusts the position of the first pressing piece 26 and the second pressing piece 22 in the jack 20 of the vertical rod 19 according to the length of the patient's upper body and lower body, and then manually rotates the first pressing piece 26 and the second pressing piece 22 to be placed on the patient's upper body and lower body respectively, and the vertical rod 19 changes from being perpendicular to the radiotherapy bed 1 to being parallel. Finally, the medical staff manually rotates the adjustment rod 31, and under the transmission effect of the bevel gear transmission assembly 32, the bidirectional screw 29 rotates, so that the two customized limit frames 33 are close to each other until the patient's shoulders, arms and neck are clamped, effectively limiting the movement of the patient's upper body;

[0032] The bottom end of the U-shaped tooth frame 13 meshes with the bottom end of the circumference of the transmission gear 12, a push piece 14 is fixedly connected to the outer wall of one side of the U-shaped tooth frame 13, the upper end of the U-shaped tooth frame 13 is set to be T-shaped, and T-shaped slide grooves 15 are opened at both ends of the bottom of the radiotherapy bed 1, and the upper end of each U-shaped tooth frame 13 is slidably located inside the T-shaped slide groove 15;

[0033] A rectangular tube 17 is fixedly installed at both ends of the top of the moving member 10, and a lifting rod 18 is slidably installed inside the rectangular tube 17. A vertical rod 19 is rotatably installed at the top of the lifting rod 18, and a plurality of insertion holes 20 are opened in the middle of the vertical rod 19.

[0034] A plurality of adjustment sockets 36 are provided on both sides of the rectangular tube 17, a positioning hole 35 is provided at the bottom of the lifting rod 18, and a plug-in 21 is inserted between the bottom of each group of lifting rods 18 and one row of adjustment sockets 36 of the rectangular tube 17, and the inner side of the plug-in 21 and the outer wall of the rectangular tube 17 are magnetically attracted to each other;

[0035] The inner sides of both sides of the first pressing piece 26 and the outer sides of both sides of the second pressing piece 22 are fixedly connected with the insertion rod 23, and the insertion rod 23 matches the insertion hole 20. The circumference of the first pressing piece 26, the circumference of the second pressing piece 22 and the circumference of the arc-shaped protrusion 25 are all sleeved with anti-slip breathable cloth covers, and the bottom end of the arc-shaped protrusion 25 is provided with an air bag bag to increase the comfort of the patient's legs and avoid the problem of excessive compression of the patient's legs by the second pressing piece 22, which causes blood flow obstruction;

[0036] Both sides of the first limiting belt 27 and the second limiting belt 24 are set as elastic sections, and the middle of the first limiting belt 27 and the second limiting belt 24 are set as breathable non-elastic sections, and the middle bottom of the first limiting belt 27 and the second limiting belt 24 is provided with a buffer airbag strip, so that the first limiting belt 27 and the second limiting belt 24 can effectively limit the movement of the patient's body and increase the comfort of the patient in the compressed position;

[0037] An adjusting rod 31 is rotatably mounted on one side of the top of the pressing frame 28, and a bevel gear transmission assembly 32 is fixedly arranged between the bottom end of the adjusting rod 31 and one side of the circumference of the bidirectional screw rod 29;

[0038] The customized limiting frame 33 is mainly composed of an L-shaped frame, and an arc-shaped frame is fixedly connected to the end of the horizontal section of the L-shaped frame. The customized limiting frame 33 is tailored according to the specific body shape of each patient from the neck to the elbow of the arm, and is stuffed with a heat dissipation and ventilation strip 34 to fix the patient's upper body and maintain comfort. When the patient develops edema, loses weight, etc. during tumor radiotherapy, the customized limiting frame 33 can continue to be used under the light skin and deformation effect of the heat dissipation and ventilation strip 34. The customized limiting frame 33 is plugged into the mobile frame 30, and each patient uses his own positioning limiting frame 33 during tumor radiotherapy to ensure its safety, hygiene and fitting effect.

[0039] Working principle: the patient first lies on the radiotherapy bed 1, and then the medical staff adjusts the first adjustment piece 8 and the second adjustment piece 9 according to the patient's body, so that the first pressing piece 26 and the second pressing piece 22 can fit the patient's body after being rotated and lowered, wherein arc-shaped protrusions 25 are arranged on both sides of the end of the second pressing piece 22, and a plurality of second limiting belts 24 are fixedly installed inside the second pressing piece 22 to limit the patient's lower body, wherein a plurality of first limiting belts 27 are fixedly installed inside the first pressing piece 26, and a pressing frame 28 is fixedly connected to the middle of the outer end of the first pressing piece 26 to limit the patient's upper body, and the two-way screw rod 29, the moving frame 30, the positioning limiting frame 33, the adjusting rod 31 and the bevel gear transmission assembly 32 cooperate, and the medical staff manually rotates the adjusting rod 31 to make the two customized limiting frames 33 approach each other until the patient's shoulders, arms and neck are clamped, effectively limiting the movement of the patient's head, neck, shoulders and arms, and further strengthening the fixation of the patient's upper body;

[0040] Both sides of the first limiting belt 27 and the second limiting belt 24 are set as elastic sections, the middle of the first limiting belt 27 and the second limiting belt 24 are set as breathable inelastic sections, and the bottom of the middle of the first limiting belt 27 and the second limiting belt 24 is provided with a buffer airbag strip, so that the first limiting belt 27 and the second limiting belt 24 can effectively limit the movement of the patient's body, while also increasing the comfort of the patient in the compressed position. The limiting frame 33 is customized with an L-shaped frame as the main body, and the end of the horizontal section of the L-shaped frame is fixedly connected with an arc frame, The customized limiting frame 33 is tailored according to the specific body shape of each patient from the neck to the elbow, and is stuffed with heat dissipation and breathable strips 34 to fix the patient's upper body and maintain comfort. When the patient develops edema, loses weight, etc. during tumor radiotherapy, the customized limiting frame 33 can continue to be used under the light skin and deformation effect of the heat dissipation and breathable strips 34. The customized limiting frame 33 is plugged into the mobile frame 30. Each patient uses his or her own positioning limiting frame 33 during tumor radiotherapy to ensure its safety, hygiene and fit.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A patient position fixing device for tumor radiotherapy, comprising a radiotherapy bed (1), one end of which is fixedly connected to a head frame (2), and a non-woven bed cloth (3) is laid between the top of the radiotherapy bed (1) and the inside of the head frame (2), characterized in that: A first notch (5) is provided at one end of the outer wall of both sides of the radiotherapy bed (1), and a second notch (6) is provided at the other end of the outer wall of both sides of the radiotherapy bed (1). A guide rod (7) is fixedly connected between the inner walls at both ends of the first notch (5) and the second notch (6), and a first adjusting member (8) is slidably arranged between the two first notches (5), and a second adjusting member (9) is slidably arranged between the two second notches (6). A second pressing member (22) is inserted at the opposite end of the second adjusting member (9), and arc-shaped protrusions (25) are provided on both sides of the end of the second pressing member (22). A plurality of second limiting members (22) are fixedly installed inside the second pressing member (22). A first pressure piece (26) is inserted at the opposite end of the first adjusting piece (8), and the middle of the outer end of the first pressure piece (26) is concave, a plurality of first limiting bands (27) are fixedly installed inside the first pressure piece (26), and a pressure frame (28) is fixedly connected to the middle of the outer end of the first pressure piece (26), a bidirectional screw rod (29) is rotatably installed inside the pressure frame (28), and both sides of the circumference of the bidirectional screw rod (29) are rotatably sleeved with a moving frame (30), and a positioning limiting frame (33) is inserted at the bottom end of each of the moving frames (30), and a heat dissipation and ventilation strip (34) is inserted inside the positioning limiting frame (33).

2. A patient position fixation device for tumor radiotherapy according to claim 1, characterized in that: An extension bracket (4) is slidably mounted on the outer wall of the other end of the radiotherapy bed (1), and both sides and the middle of the top of the extension bracket (4) are concave, and a buffer pad is laid on the top of the extension bracket (4).

3. A patient position fixation device for tumor radiotherapy according to claim 1, characterized in that: The first adjusting member (8) and the second adjusting member (9) both comprise a moving member (10) and a U-shaped gear frame (13); three fixed plates (16) are fixedly mounted on the bottom end of the radiotherapy bed (1); a screw rod (11) is rotatably mounted between every two adjacent fixed plates (16) via a bearing; the middle of the moving member (10) is rotatably sleeved with the screw rod (11); both sides of the moving member (10) are slidably sleeved with the guide rod (7); and transmission gears (12) are fixedly mounted on opposite ends of the two screw rods (11).

4. A patient position fixation device for tumor radiotherapy according to claim 3, characterized in that: The bottom end of the U-shaped tooth frame (13) meshes with the bottom end of the circumference of the transmission gear (12); a push piece (14) is fixedly connected to the outer wall of one side of the U-shaped tooth frame (13); the upper end of the U-shaped tooth frame (13) is arranged in a T shape; two ends of the bottom end of the radiotherapy bed (1) are provided with T-shaped slide grooves (15), and the upper end of each U-shaped tooth frame (13) is slidably located inside the T-shaped slide groove (15).

5. The patient position fixing device for tumor radiotherapy according to claim 3, characterized in that: A rectangular tube (17) is fixedly mounted at both ends of the top of the moving member (10), and a lifting rod (18) is slidably mounted inside the rectangular tube (17). A hanging rod (19) is rotatably mounted at the top of the lifting rod (18), and a plurality of insertion holes (20) are provided in the middle of the hanging rod (19).

6. A patient position fixation device for tumor radiotherapy according to claim 5, characterized in that: A plurality of adjustment sockets (36) are provided on both sides of the rectangular tube (17), a positioning hole (35) is provided at the bottom end of the lifting rod (18), and a plug-in (21) is inserted between the bottom end of each group of lifting rods (18) and one row of adjustment sockets (36) of the rectangular tube (17), and the inner side of the plug-in (21) and the outer wall of the rectangular tube (17) are magnetically attracted to each other.

7. The patient position fixing device for tumor radiotherapy according to claim 5, characterized in that: The inner sides of both sides of the first pressing piece (26) and the outer sides of both sides of the second pressing piece (22) are fixedly connected with an insertion rod (23), and the insertion rod (23) matches the insertion hole (20); the circumference of the first pressing piece (26), the circumference of the second pressing piece (22) and the circumference of the arc-shaped protrusion (25) are all sleeved with anti-slip breathable cloth covers, and an airbag bag is arranged at the bottom end of the arc-shaped protrusion (25).

8. The patient position fixing device for tumor radiotherapy according to claim 1, characterized in that: Both sides of the first limiting belt (27) and the second limiting belt (24) are arranged as elastic sections, the middle of the first limiting belt (27) and the second limiting belt (24) are arranged as breathable non-elastic sections, and a cushioning airbag strip is arranged at the bottom of the middle of the first limiting belt (27) and the second limiting belt (24).

9. The patient position fixing device for tumor radiotherapy according to claim 1, characterized in that: An adjusting rod (31) is rotatably mounted on one side of the top end of the pressing frame (28), and a bevel gear transmission assembly (32) is fixedly arranged between the bottom end of the adjusting rod (31) and one side of the circumference of the bidirectional screw rod (29).

10. The patient position fixing device for tumor radiotherapy according to claim 1, characterized in that: The customized limiting frame (33) is mainly composed of an L-shaped frame, and an arc-shaped frame is fixedly connected to the end of the horizontal section of the L-shaped frame.

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