Automatic positioning device for tumor radiotherapy

Abstract

The invention relates to the field of tumor radiotherapy, and discloses an automatic positioning device for tumor radiotherapy, the automatic positioning device comprises an electric sliding table and a radiotherapy instrument, the inner wall of the electric sliding table is slidably connected with a concave frame, and the top of the concave frame is fixedly connected with a lying plate; a transverse hinged plate mechanism is arranged on the concave frame, and the transverse hinged plate mechanism is unfolded and supported along the left side and the right side of the lying plate in a hinged mode and used for helping an obese patient; a longitudinal hinged plate mechanism is arranged on the lying plate, and the longitudinal hinged plate mechanism is unfolded and supported along the bottom of the lying plate in a hinged mode and is used for helping a tall patient, and the supporting strength and the comfort degree are improved. By arranging the pushing plate mechanism, when the lying plate moves towards the radiotherapy instrument, the position of the shoulder blade of a patient is automatically calibrated, the patient is located in the center of the lying plate, the problem that a traditional radiotherapy patient is prone to deviating from the center line is solved, it is ensured that a tumor is accurately irradiated, and damage to normal tissue is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tumor radiotherapy treatment, and specifically relates to an automatic positioning device for tumor radiotherapy treatment. Background Art

[0002] Tumor radiotherapy is one of the important means of cancer treatment. It precisely destroys tumor cells through high-energy rays, thereby achieving the purpose of treatment.

[0003] Common tumor radiotherapy devices are usually equipped with an electric sliding table and a radiotherapy instrument. First, the patient lies flat on the top of the electric sliding table, and then by starting the electric sliding table, the patient is driven to move under the radiotherapy instrument, and then the radiotherapy instrument performs radiotherapy on the patient below.

[0004] However, considering the actual use process, when the patient lies flat on the top of the electric sliding table, it is very difficult to ensure that they are in the center line position of the electric sliding table. This causes the radiotherapy instrument to be unable to accurately align with the tumor treatment position due to the deviation of the patient's position after the electric sliding table moves the patient under the radiotherapy instrument. Once such a deviation occurs, not only will the tumor cells not receive enough doses of ray irradiation, resulting in a significant reduction in the treatment effect, but it may also cause unnecessary damage to the surrounding normal tissues, leading to more complications and seriously affecting the patient's recovery process. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an automatic positioning device for tumor radiotherapy treatment, which solves the problem that when the patient lies flat on the top of the electric sliding table during tumor radiotherapy treatment, it is easy to deviate from the center line, resulting in the radiotherapy instrument being unable to accurately align with the tumor.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic positioning device for tumor radiotherapy treatment, including an electric sliding table and a radiotherapy instrument. A concave frame is slidably connected to the inner wall of the electric sliding table, and a lying board is fixedly connected to the top of the concave frame;

[0007] A transverse hinge plate mechanism is arranged on the concave frame, and the transverse hinge plate mechanism is unfolded and supported along the left and right sides of the lying board by means of hinge;

[0008] A longitudinal hinge plate mechanism is arranged on the lying board, and the longitudinal hinge plate mechanism is unfolded and supported along the bottom of the lying board by means of hinge;

[0009] A push plate mechanism is arranged at the bottom of the electric sliding table. When the lying board moves along the electric sliding table towards the radiotherapy instrument, the push plate mechanism automatically pushes and calibrates the scapula position of the patient inward, so that the patient is located at the center position of the lying board.

[0010] Preferably, the horizontal hinge plate mechanism includes a threaded rod A, the top of the threaded rod A is rotatably connected to the bottom of the lying board, the middle outer wall of the threaded rod A penetrates through and is rotatably connected to the inner wall of the concave frame, a moving block A is threadedly connected to the outer wall of the threaded rod A, a horizontal connecting rod is hinged to the outer wall of the moving block A, a horizontal board is hinged to the outer wall of the horizontal connecting rod, and the inner wall of the horizontal board and the inner wall of the lying board are hinged to each other through a hinge member.

[0011] Preferably, the vertical hinge plate mechanism includes a threaded rod B, the top of the threaded rod B is rotatably connected to the bottom of the lying board, a moving block B is threadedly connected to the outer wall of the threaded rod B, a vertical connecting rod is hinged to the outer wall of the moving block B, a vertical board is hinged to the top of the vertical connecting rod, and the inner wall of the vertical board and the inner wall of the lying board are hinged to each other through a hinge member.

[0012] Preferably, a sprocket A is fixedly connected to the bottom of the threaded rod B, a sleeve is rotatably connected to the bottom of the concave frame, a sprocket B is fixedly connected to the middle outer wall of the sleeve, and the outer wall of the sprocket A is drivingly connected to the outer wall of the sprocket B through a chain.

[0013] Preferably, a card slot is formed in the bottom of the sleeve, an inner rod is fixedly connected to the bottom of the threaded rod A, a slider is fixedly connected to the outer wall of the inner rod, an outer rod is slidably connected to the outer wall of the inner rod, a rectangular groove is formed in the inner wall of the outer rod, and the outer wall of the slider is slidably connected to the inner wall of the rectangular groove.

[0014] Preferably, one end of a spring is fixedly connected to the bottom of the inner rod, the other end of the spring is fixedly connected to the inner wall of the outer rod, a clamping block is fixedly connected to the outer wall of the outer rod, and the outer wall of the clamping block is inserted into the inner wall of the card slot.

[0015] Preferably, the pushing plate mechanism includes a sliding track, the top of the sliding track is fixedly connected to the bottom of the electric sliding table, and a rectangular shell is slidably connected to the inner wall of the sliding track.

[0016] Preferably, a moving frame is slidably connected to the outer wall of the rectangular shell, and the top of the moving frame is fixedly connected to the outer wall of the moving block A.

[0017] Preferably, an arc-shaped pushing plate is slidably connected to the inner wall of the lying board, a connecting rod is hinged to the bottom of the arc-shaped pushing plate, a guide rod is fixedly connected to the bottom of the connecting rod, a sphere is fixedly connected to the bottom of the guide rod, the outer wall of the guide rod penetrates through and is slidably connected to the top of the rectangular shell, and an arc-shaped sliding rail is fixedly connected to the inner wall of the rectangular shell.

[0018] Preferably, the outer wall of the sphere is slidably connected to the inner wall of the arc-shaped sliding rail, and the outer wall of the guide rod penetrates through and is slidably connected to the top of the arc-shaped sliding rail.

[0019] Working principle: During radiotherapy, the patient lies flat on the lying board. The electric sliding table is started, driving the concave frame to move horizontally towards the radiotherapy instrument. Through the guide rod and connecting rod, two groups of arc-shaped push plates are pushed towards the center, squeezing the patient's scapula, assisting in adjusting the body position, and achieving precise positioning.

[0020] Before radiotherapy, the lying board can be adjusted according to the patient's body type to improve comfort:

[0021] For relatively obese patients, rotating the outer rod drives the inner rod, causing the threaded rod A to rotate. The moving block A moves upward, and through the horizontal connecting rod, the horizontal support plates on both sides of the lying board are propped up to provide extended support.

[0022] For patients who are tall and obese, first push the outer rod upward so that the block is inserted into the sleeve slot, then rotate the outer rod, driving the inner rod and the sleeve to rotate. With the transmission of sprocket A, sprocket B, and the chain, the threaded rod A and the threaded rod B rotate simultaneously, improving the efficiency of extended support. At the same time, the rotation of the threaded rod B causes the moving block B to move upward, and through the vertical connecting rod, the vertical board is turned up to provide support for the patient's legs.

[0023] The upward movement of the moving block A indicates that the patient is relatively obese. At this time, the moving block A drives the moving frame, causing the rectangular housing to rise, changing the height of the arc-shaped slide rail. The sphere moves upward and drives the arc-shaped push plate to expand outward, realizing synchronous adjustment of the calibration position of the arc-shaped push plate when the threaded rod A provides extended support, and improving the convenience of the device.

[0024] The present invention provides an automatic positioning device for tumor radiotherapy treatment. It has the following beneficial effects:

[0025] 1. By setting up the push plate mechanism, when the lying board moves towards the radiotherapy instrument, the position of the patient's scapula is automatically calibrated, allowing the patient to be at the center of the lying board, solving the problem that traditional radiotherapy patients are prone to deviate from the midline, ensuring precise irradiation of the tumor, reducing damage to normal tissues, improving the treatment effect, and reducing complications.

[0026] 2. By setting up the horizontal hinge plate mechanism and the vertical hinge plate mechanism, during the use of the lying board, the horizontal board and the vertical board can be expanded according to the patient's body type needs, thus achieving the effect of extended support and adapting to different body types of patients for support treatment.

[0027] 3. Through the design of the outer rod, slot, and block, when the horizontal board and the vertical board need to be opened and supported simultaneously, by pressing and rotating, the outer rod is inserted and fixed with the sleeve, and the threaded rod A and the threaded rod B are driven to rotate simultaneously, avoiding the process that the staff needs to separately adjust the threaded rod B after adjusting the threaded rod A.

[0028] 4. In the present invention, by providing a moving frame, when the moving block A moves upward due to the patient's overweight body type, it drives the moving frame and the rectangular housing, changing the height of the arc-shaped slide rail, causing the arc-shaped push plate to expand outward, realizing synchronous adjustment of extended support and position calibration, reducing multiple manual adjustments, improving the operation convenience, and saving the radiotherapy preparation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a perspective view of the present invention;

[0030] Figure 2 is a schematic structural diagram of the present invention after the horizontal plate and the vertical plate are retracted;

[0031] Figure 3 is a schematic sectional structural diagram of the concave-shaped frame of the present invention;

[0032] Figure 4 is a schematic structural diagram of the longitudinal hinge plate mechanism of the present invention;

[0033] Figure 5 is a schematic structural diagram of the transverse hinge plate mechanism of the present invention;

[0034] Figure 6 is a schematic structural diagram of the push plate mechanism of the present invention;

[0035] Figure 7 is a schematic sectional structural diagram of the rectangular housing of the present invention;

[0036] Figure 8 is a schematic structural diagram of the arc-shaped push plate of the present invention.

[0037] Among them, 1. Electric sliding table; 2. Radiotherapy instrument; 3. Concave-shaped frame; 4. Transverse hinge plate mechanism; 401. Threaded rod A; 402. Moving block A; 403. Rectangular groove; 404. Transverse connecting rod; 405. Horizontal plate; 406. Sleeve; 407. Outer rod; 408. Block; 409. Spring; 410. Slide block; 411. Inner rod; 5. Longitudinal hinge plate mechanism; 501. Chain; 502. Sprocket A; 503. Sprocket B; 504. Threaded rod B; 505. Moving block B; 506. Vertical connecting rod; 507. Vertical plate; 6. Push plate mechanism; 601. Rectangular housing; 602. Moving frame; 603. Guide rod; 604. Arc-shaped slide rail; 605. Sliding track; 606. Sphere; 607. Link; 608. Arc-shaped push plate; 7. Lying plate. DETAILED DESCRIPTION OF THE INVENTION

[0038] Next, in combination with the accompanying drawings of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to the attached Figure 1 - attached Figure 8 , the embodiment of the present invention provides an automatic positioning device for tumor radiotherapy treatment, including an electric sliding table 1 and a radiotherapy instrument 2, and the bottoms of both the electric sliding table 1 and the radiotherapy instrument 2 are connected and fixed to the ground by bolts to ensure stability during use. A concave frame 3 is slidably connected to the inner wall of the electric sliding table 1. By starting the electric sliding table 1, the electric sliding table 1 drives the concave frame 3 to move horizontally, driving the patient to move under the radiotherapy instrument 2 for treatment. A lying board 7 is fixedly connected to the top of the concave frame 3 to provide a supporting effect for the patient, and a horizontal hinge plate mechanism 4 is arranged on the concave frame 3.

[0040] When radiotherapy is required for a tumor patient, the patient needs to lie flat on the lying board 7, and by starting the electric sliding table 1, the electric sliding table 1 drives the concave frame 3 to move horizontally, and when the concave frame 3 moves towards the radiotherapy instrument 2, when the concave frame 3 drives the lying board 7 to move under the radiotherapy instrument 2, then the radiotherapy instrument 2 is started to perform radiotherapy on the tumor patient.

[0041] The horizontal hinge plate mechanism 4 includes a threaded rod A401. The top of the threaded rod A401 is rotatably connected to the bottom of the lying board 7, so that the lying board 7 provides a supporting effect for the threaded rod A401. The middle outer wall of the threaded rod A401 penetrates and is rotatably connected to the inner wall of the concave frame 3, so that the threaded rod A401 rotates along the inner wall of the concave frame 3.

[0042] A moving block A402 is threadedly connected to the outer wall of the threaded rod A401. By rotating the threaded rod A401, the moving block A402 is driven to move vertically, changing the vertical position of the moving block A402. A horizontal connecting rod 404 is hinged to the outer wall of the moving block A402, so that during the movement of the moving block A402, the cross plate 405 is driven to flip and unfold through the horizontal connecting rod 404. The horizontal connecting rod 404 is hinged to the cross plate 405, and the inner wall of the cross plate 405 and the inner wall of the lying board 7 are hinged to each other through a hinge, realizing the effect of the cross plate 405 flipping and storing or flipping and unfolding along the lying board 7.

[0043] Considering that the size of the existing lying board 7 is fixed during use and cannot be expanded and adjusted when facing patients of different body types, which affects the adaptability and comfort of the lying board 7. However, the above device can adjust the lying board 7 according to the body type of the patient before radiotherapy, improving the comfort of the patient. Specifically:

[0044] When encountering a fat patient, the transverse hinged plate mechanism 4 is adjusted, and the medical staff rotates the outer rod 407 to make the outer rod 407 drive the inner rod 411 to rotate, and the inner rod 411 drives the threaded rod A401 to rotate, so that the threaded rod A401 drives the moving block A402 to move upward, so that the two groups of transverse connecting rods 404 prop up the transverse support plates arranged on both sides of the lying plate 7 to open, thereby achieving the effect of extending the support for the patient;

[0045] A longitudinal hinged plate mechanism 5 is provided on the lying plate 7, and the longitudinal hinged plate mechanism 5 includes a threaded rod B504, the top of the threaded rod B504 is rotatably connected to the bottom of the lying plate 7, so that the bottom of the lying plate 7 provides a support effect for the threaded rod B504, and the outer wall of the threaded rod B504 is threadedly connected to a moving block B505, so that the moving block B505 is driven to move vertically during the rotation of the threaded rod B504, and the vertical position of the moving block B505 is changed. The outer wall of the moving block B505 is hinged with a vertical connecting rod 506, so that the vertical plate 507 is driven to flip through the vertical connecting rod 506 during the vertical movement of the moving block B505, and the top of the vertical connecting rod 506 is hinged with a vertical plate 507, and the inner wall of the vertical plate 507 is hinged to the inner wall of the lying plate 7 through a hinge, so as to achieve the effect of the vertical plate 507 being flipped and stored or flipped and unfolded along the lying plate 7.

[0046] The bottom of the threaded rod B504 is fixedly connected to a sprocket A502, so that the sprocket A502 drives the threaded rod B504 to rotate, and the bottom of the concave frame 3 is rotatably connected to a sleeve 406, so that the concave frame 3 provides a support effect for the sleeve 406, and a sprocket B503 is fixedly connected to the outer wall of the middle section of the sleeve 406, so that the sleeve 406 is driven to rotate simultaneously during the rotation of the sprocket B503. The outer wall of the sprocket A502 is transmission-connected to the outer wall of the sprocket B503 through the chain 501, so that when the sprocket A502 rotates, the sprocket B503 is driven to rotate simultaneously through the chain 501, thereby achieving a transmission effect.

[0047] A card slot is provided at the bottom of the sleeve 406. The card slot facilitates the plugging of the bottom of the sleeve 406 with the card block 408 provided at the top of the outer rod 407. The bottom of the threaded rod A401 is fixedly connected to the inner rod 411, so that the threaded rod A401 is driven to rotate during the rotation of the inner rod 411. A slider 410 is fixedly connected to the outer wall of the inner rod 411. The outer wall of the inner rod 411 is slidably connected to the outer rod 407, so that the outer rod 407 is moved vertically along the outer wall of the inner rod 411. A rectangular groove 403 is provided on the inner wall of the outer rod 407. Through the design of the slider 410 and the rectangular groove 403, the outer rod 407 is moved along the outer wall of the inner rod 411. At the same time, the inner rod 411 is driven to rotate simultaneously during the rotation of the outer rod 407. The inner wall of the rectangular groove 403 is slidably connected to the outer wall of the slider 410.

[0048] The bottom of the inner rod 411 is fixedly connected to one end of the spring 409, and the other end of the spring 409 is fixedly connected to the inner wall of the outer rod 407, so that the force of the spring 409 drives the outer rod 407 to move downward, keeping the outer rod 407 separated from the sleeve 406. A clamping block 408 is fixedly connected to the outer wall of the outer rod 407, and the outer wall of the clamping block 408 is inserted into the inner wall of the clamping groove. In this way, the outer rod 407 drives the sleeve 406 to rotate.

[0049] When encountering a patient who is tall and obese, the longitudinal hinge plate mechanism 5 is used. First, the medical staff pushes the outer rod 407 upward, so that the clamping block 408 provided at the top of the outer rod 407 is inserted into the clamping groove at the bottom of the sleeve 406. Then, the outer rod 407 is rotated, so that while the outer rod 407 drives the inner rod 411 to rotate, it also drives the sleeve 406 to rotate. Through the transmission effect of the sprocket A 502, sprocket B 503 and chain 501, the threaded rod A 401 and the threaded rod B 504 rotate simultaneously, improving the efficiency of expanding and supporting. At the same time, the rotation of the threaded rod B 504 drives the moving block B 505 to move upward, and drives the vertical plate 507 to turn out upward through the vertical connecting rod 506, so as to provide an expanded support effect for the patient's leg;

[0050] A push plate mechanism 6 is provided at the bottom of the electric slide table 1. The push plate mechanism 6 includes a sliding track 605. The top of the sliding track 605 is fixedly connected to the bottom of the electric slide table 1, so that the electric slide table 1 provides a support effect for the sliding track 605. A rectangular housing 601 is slidably connected to the inner wall of the sliding track 605, so that the rectangular housing 601 moves vertically along the inner wall of the sliding track 605. A moving frame 602 is slidably connected to the outer wall of the rectangular housing 601, so that the inner wall of the moving frame 602 moves horizontally along the outer wall of the rectangular housing 601. The top of the moving frame 602 is fixedly connected to the outer wall of the moving block A 402. When the moving block A 402 moves vertically, it drives the moving frame 602 to move vertically at the same time, and makes the moving frame 602 drive the rectangular housing 601 provided on the inner wall to move upward at the same time.

[0051] Considering that when the patient lies flat on the top of the lying board 7, it is impossible to accurately ensure that he is at the midline of the lying board 7, which will affect the positioning and treatment effect of the subsequent radiotherapy instrument 2. After the patient lies flat on the lying board 7, the medical staff first reminds the patient to place the back and shoulder parts in the groove opened at the top of the lying board 7. At this time, when the electric sliding table 1 is started, the arc-shaped push plate 608 arranged on the inner wall of the concave frame 3 drives the bottom sphere 606 to move along the arc-shaped slide rail 604, so that the sphere 606 gradually moves downward, and the sphere 606 pulls the guide rod 603 at the top to move downward. During the downward movement of the guide rod 603, the two arc-shaped push plates 608 are driven to move towards the center through the connecting rod 607, so that the arc-shaped push plate 608 squeezes and pushes the patient's scapula, thereby assisting the patient to adjust the body position on the lying board 7 and achieving the purpose of precise positioning.

[0052] An arc-shaped push plate 608 is slidably connected to the inner wall of the lying board 7. To maintain the stability of the arc-shaped push plate 608 during lateral movement, a connecting rod 607 is hinged to the bottom of the arc-shaped push plate 608. The bottom of the connecting rod 607 is fixedly connected to a guide rod 603. During the vertical movement of the guide rod 603, the arc-shaped push plate 608 is driven to move laterally through the connecting rod 607. The bottom of the guide rod 603 is fixedly connected to a sphere 606, so that the sphere 606 drives the guide rod 603 to move vertically, changing the vertical position of the guide rod 603. The outer wall of the guide rod 603 passes through the top of the rectangular shell 601 and is slidably connected. The inner wall of the rectangular shell 601 is fixedly connected to an arc-shaped slide rail 604, so that the rectangular shell 601 provides a supporting effect for the arc-shaped slide rail 604. The inner wall of the arc-shaped slide rail 604 is slidably connected to the outer wall of the sphere 606, so that during the movement of the sphere 606, it is gradually moved downward under the squeezing effect of the arc-shaped slide rail 604, and the sphere 606 drives the guide rod 603 to move downward at the same time. The outer wall of the guide rod 603 passes through the top of the arc-shaped slide rail 604 and is slidably connected.

[0053] At the same time, considering that during the process of the lateral hinge plate mechanism 4 expanding and adjusting outwards, it means that the patient is relatively fat, and it is necessary to adjust the calibration position of the arc-shaped push plate 608. When the moving block A402 moves upward, the moving block A402 drives the moving frame 602 to move upward at the same time, so that the moving frame 602 drives the rectangular shell 601 arranged on the inner wall to move upward, changing the height of the rectangular shell 601, so that the height of the arc-shaped slide rail 604 arranged on the inner wall of the rectangular shell 601 is changed, so that the sphere 606 moves upward at the same time, and drives the arc-shaped push plate 608 to expand outwards, realizing the effect of adjusting the calibration positions of the two arc-shaped push plates 608 at the same time when the threaded rod A401 is extended and supported, and further improving the convenience of the device.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning device for tumor radiotherapy treatment, characterized in that, It comprises an electric slide table (1) and a radiotherapy apparatus (2), wherein the inner wall of the electric slide table (1) is slidably connected to a concave frame (3), and the top of the concave frame (3) is fixedly connected to a lying board (7); The concave frame (3) is provided with a transverse hinged plate mechanism (4), and the transverse hinged plate mechanism (4) is unfolded and supported along the left and right sides of the lying plate (7) in a hinged manner; The lying plate (7) is provided with a longitudinal hinged plate mechanism (5), and the longitudinal hinged plate mechanism (5) is unfolded and supported along the bottom of the lying plate (7) in a hinged manner; A push plate mechanism (6) is provided at the bottom of the electric slide (1). When the lying board (7) moves along the electric slide (1) toward the radiotherapy device (2), the push plate mechanism (6) automatically pushes and calibrates the position of the patient's shoulder blade inwards so that the patient is located at the center of the lying board (7).

2. The automatic positioning device for tumor radiotherapy treatment according to claim 1, wherein, The transverse hinged plate mechanism (4) comprises a threaded rod A (401), the top of the threaded rod A (401) is rotatably connected to the bottom of the lying plate (7), the middle outer wall of the threaded rod A (401) penetrates the inner wall of the concave frame (3) and is rotatably connected, the outer wall of the threaded rod A (401) is threadedly connected to a moving block A (402), the outer wall of the moving block A (402) is hinged to a transverse connecting rod (404), the outer wall of the transverse connecting rod (404) is hinged to a transverse plate (405), and the inner wall of the transverse plate (405) is hinged to the inner wall of the lying plate (7) via a hinge.

3. The automatic positioning device for tumor radiotherapy treatment according to claim 1, wherein The longitudinal hinged plate mechanism (5) comprises a threaded rod B (504), the top of the threaded rod B (504) is rotatably connected to the bottom of the lying plate (7), the outer wall of the threaded rod B (504) is threadedly connected to a moving block B (505), the outer wall of the moving block B (505) is hinged to a vertical connecting rod (506), the top of the vertical connecting rod (506) is hinged to a vertical plate (507), and the inner wall of the vertical plate (507) is hinged to the inner wall of the lying plate (7) through a hinge.

4. The automatic positioning device for tumor radiotherapy treatment according to claim 3, characterized in that, The bottom of the threaded rod B (504) is fixedly connected to a sprocket A (502), the bottom of the concave frame (3) is rotatably connected to a sleeve (406), a sprocket B (503) is fixedly connected to the outer wall of the middle section of the sleeve (406), and the outer wall of the sprocket A (502) is transmission-connected to the outer wall of the sprocket B (503) via a chain (501).

5. The automatic positioning device for tumor radiotherapy treatment according to claim 4, wherein A slot is provided at the bottom of the sleeve (406); an inner rod (411) is fixedly connected to the bottom of the threaded rod A (401); a slider (410) is fixedly connected to the outer wall of the inner rod (411); an outer rod (407) is slidably connected to the outer wall of the inner rod (411); a rectangular groove (403) is formed at the inner wall of the outer rod (407); and the inner wall of the rectangular groove (403) is slidably connected to the outer wall of the slider (410).

6. The automatic positioning device for tumor radiotherapy treatment according to claim 5, characterized in that, The bottom of the inner rod (411) is fixedly connected to one end of a spring (409), the other end of the spring (409) is fixedly connected to the inner wall of the outer rod (407), a clamping block (408) is fixedly connected to the outer wall of the outer rod (407), and the outer wall of the clamping block (408) is inserted into the inner wall of a clamping groove.

7. The automatic positioning device for tumor radiotherapy treatment according to claim 1, wherein, The push plate mechanism (6) includes a sliding track (605), the top of the sliding track (605) is fixedly connected to the bottom of an electric sliding table (1), and a rectangular shell (601) is slidably connected to the inner wall of the sliding track (605).

8. An automatic positioning device for tumor radiotherapy treatment according to claim 2 or claim 7, characterized in that, A moving frame (602) is slidably connected to the outer wall of the rectangular shell (601), and the top of the moving frame (602) is fixedly connected to the outer wall of a moving block A (402).

9. The automatic positioning device for tumor radiotherapy treatment according to claim 1, characterized in that, An arc-shaped push plate (608) is slidably connected to the inner wall of the lying board (7), a connecting rod (607) is hinged to the bottom of the arc-shaped push plate (608), a guide rod (603) is fixedly connected to the bottom of the connecting rod (607), a sphere (606) is fixedly connected to the bottom of the guide rod (603), the outer wall of the guide rod (603) penetrates through the top of the rectangular shell (601) and is slidably connected thereto, and an arc-shaped sliding rail (604) is fixedly connected to the inner wall of the rectangular shell (601).

10. The automatic positioning device for tumor radiotherapy treatment according to claim 9, wherein, The inner wall of the arc-shaped sliding rail (604) is slidably connected to the outer wall of the sphere (606), and the outer wall of the guide rod (603) penetrates through the top of the arc-shaped sliding rail (604) and is slidably connected thereto.

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