Treatment beds and radiotherapy equipment

Abstract

The present invention discloses a treatment bed and radiotherapy equipment, belonging to the technical field of medical devices. The treatment bed comprises: a treatment bed body, a support bracket and a base body. The support bracket supports the treatment bed body; the base body is connected to one end of the support bracket and is configured to be fixedly connected to the rigid support part of the radiotherapy equipment. When the base body does not contact the ground or the contact area is small, the contact area between the treatment bed body and the support bracket is large, so that the base body can effectively support the treatment bed body, effectively reducing the floor space of the treatment bed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a treatment bed and radiotherapy equipment. Background Art

[0002] Radiotherapy is an important means of treating cancer, and radiotherapy equipment (abbreviated as radiotherapy equipment) is the key medical equipment for carrying out radiotherapy.

[0003] In the related art, radiotherapy equipment generally includes: a frame and a treatment bed. The frame may be a drum-type rotating frame or a fixed frame, the frame is used to set a treatment head, and the treatment bed is used to carry a patient. Generally, the treatment bed can at least move along the longitudinal direction of the treatment bed (also called the y-axis direction), the transverse direction of the treatment bed (also called the x-axis direction), and the height direction of the treatment bed (also called the z-axis direction), so that the target area of ​​the patient on the treatment bed coincides with the isocenter focus of the treatment head to achieve treatment of the patient.

[0004] The current treatment bed usually includes a support base and a treatment bed body, and the support base is located in the middle of the treatment bed body. In order to ensure that the support base can effectively support the treatment bed body, it is necessary to ensure that the contact area between the support base and the treatment bed body is large, resulting in a large footprint of the treatment bed, and there is usually a certain distance between the treatment bed and the frame, further increasing the footprint of the radiotherapy equipment, so that the radiotherapy equipment cannot be used in a room with a small area. Summary of the invention

[0005] The embodiment of the present invention provides a treatment bed and radiotherapy equipment. It can solve the problem that the radiotherapy equipment in the prior art cannot be used in a room with a small area. The technical solution is as follows:

[0006] In a first aspect, a treatment bed is provided, comprising:

[0007] The treatment bed body is used to carry the patient;

[0008] A support bracket, supporting the treatment bed body;

[0009] The base body is connected to one end of the support bracket and is configured to be fixedly connected to the rigid support part of the radiotherapy equipment.

[0010] Optionally, the treatment bed further includes:

[0011] A first driving assembly is disposed on the base body and connected to the supporting bracket, and is configured to drive the supporting bracket to move in a height direction of the treatment bed body.

[0012] Optionally, the first driving component includes:

[0013] a first drive motor;

[0014] A driving rod, one end of which is connected to the first driving motor, and the other end of which is connected to the base body or the rigid support portion of the radiotherapy device;

[0015] The driving connecting member is connected to the supporting bracket and movably connected to the driving rod, and is configured to drive the supporting bracket to move along the driving rod in the height direction of the treatment bed body when the first driving motor drives the driving rod to rotate.

[0016] Optionally, the treatment bed further includes:

[0017] The second driving assembly is connected to the first driving assembly and to the supporting frame, and is configured to drive the supporting frame to move in the lateral direction of the treatment bed body.

[0018] Optionally, the second driving component includes:

[0019] a second drive motor;

[0020] A driving guide bar, arranged on the first driving assembly;

[0021] a driving wheel, arranged on the supporting bracket, connected to the second driving motor, and movably connected to the driving guide bar, and configured to drive the supporting bracket to move along the driving guide bar in the lateral direction of the treatment bed body under the drive of the second driving motor;

[0022] Alternatively, the second driving component comprises:

[0023] a second drive motor;

[0024] a driving wheel, disposed on the first driving assembly and connected to the second driving motor;

[0025] The driving guide bar is arranged on the supporting bracket and is movably connected with the driving wheel, and is configured to drive the supporting bracket to move in the lateral direction of the treatment bed body when the second driving motor drives the driving wheel to rotate.

[0026] Optionally, the treatment bed further includes:

[0027] The third driving assembly is connected to the treatment bed body and is configured to drive the treatment bed body to move in the longitudinal direction of the treatment bed body.

[0028] Optionally, the third driving component includes:

[0029] A third drive motor;

[0030] A conveyor belt assembly connected to the third driving motor;

[0031] The treatment bed body connecting member is arranged on the conveyor belt assembly and connected to the treatment bed body, and is configured to drive the treatment bed body to move in the longitudinal direction of the treatment bed body when the third driving motor drives the conveyor belt assembly to rotate.

[0032] Optionally, the first drive assembly, the second drive assembly and the third drive assembly each further include: a position detection device.

[0033] Optionally, the position detection device includes: an encoder, and / or a sensor.

[0034] In a second aspect, a radiotherapy device is provided, comprising: a treatment bed and a rigid support portion, wherein the treatment bed is any treatment bed described in the first aspect, and the treatment bed is fixedly connected to the rigid support portion.

[0035] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0036] The treatment bed body is arranged on the support bracket, one end of the support bracket is fixedly connected to the base body, and the base body is connected to the rigid support part of the radiotherapy device. In this way, when the base body does not contact the ground or the contact area is small, the contact area between the treatment bed body and the support bracket is ensured to be large, so that the base body can effectively support the treatment bed body, and effectively reduce the floor space of the treatment bed. In addition, the base body in the treatment bed can be directly fixedly connected to the rigid support part in the radiotherapy device, further reducing the floor space of the radiotherapy device, so that the radiotherapy device can be used in a room with a smaller area. When the base body in the treatment bed is directly fixedly connected to the rigid support part in the radiotherapy device, the distance between the treatment bed body and the treatment head set in the radiotherapy device is relatively close, so the treatment bed can quickly achieve the overlap of the target area of ​​the patient on the treatment bed with the isocenter focus of the treatment head, effectively improving the treatment efficiency of the radiotherapy device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 It is a structural schematic diagram of a radiotherapy device provided by the related technology;

[0039] Figure 2is a structural schematic diagram of a treatment bed provided by an embodiment of the present invention;

[0040] Figure 3 is a structural schematic diagram of another treatment bed provided by an embodiment of the present invention;

[0041] Figure 4 yes Figure 3 A perspective view of a treatment couch is shown;

[0042] Figure 5 is a structural schematic diagram of a first driving component provided by an embodiment of the present invention;

[0043] Figure 6 It is a structural schematic diagram of a lifting drive unit provided by the related technology;

[0044] Figure 7 is a structural schematic diagram of a second driving assembly provided by an embodiment of the present invention;

[0045] Figure 8 is a structural schematic diagram of a third driving assembly provided by an embodiment of the present invention;

[0046] Fig. 9 is a side view of another third drive assembly provided by an embodiment of the present invention;

[0047] Fig.10 yes Figure 8 a side view of a third drive assembly shown;

[0048] Fig.11 is a structural schematic diagram of another treatment bed provided by an embodiment of the present invention;

[0049] Fig.12 It is a structural schematic diagram of a radiotherapy device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] Please refer to Figure 1 , Figure 1It is a structural schematic diagram of a radiotherapy device provided by the related art. The radiotherapy device may include: a treatment bed 02 and a frame 01. The frame 01 may be a drum-type rotating frame or a fixed frame. The treatment bed 02 may include: a support base 021 and a treatment bed body 022, and the support base 021 is usually located in the middle of the treatment bed body 022. In order to ensure that the support base 021 can effectively support the treatment bed body 022, it is necessary to ensure that the contact area between the support base 021 and the treatment bed body 022 is large, resulting in a large footprint of the treatment bed 02. In addition, since there is a certain distance between the treatment bed 02 and the frame 01, the footprint of the radiotherapy device is further increased, so the radiotherapy device cannot be used in a room with a smaller area.

[0052] When there is a certain distance between the treatment bed 02 and the rack 01, the distance between the treatment bed body 022 and the treatment head arranged in the rack 01 is relatively close, and the treatment bed 02 needs to be controlled for a relatively long time to ensure that the target area of ​​the patient on the treatment bed 02 coincides with the isocenter focus of the treatment head, so the treatment efficiency of the radiotherapy device is relatively low.

[0053] Please refer to Figure 2 , Figure 2 : is a schematic diagram of the structure of a treatment bed provided by an embodiment of the present invention. The treatment bed 100 may include:

[0054] The support frame 10a, the base body 10b and the treatment bed body 20.

[0055] The treatment bed body 20 is used to carry the patient. The support bracket 10a supports the treatment bed body 20. The base body 10b is connected to one end of the support bracket 10a, and the base body 10b is configured to be fixedly connected to the rigid support part of the radiotherapy device.

[0056] In the embodiment of the present invention, the treatment bed body 20 is arranged on the support bracket 10a, one end of the support bracket 10a is connected to the base body 10b, and the base body is connected to the rigid support part of the radiotherapy equipment. In this way, when the base body 10b is not in contact with the ground or the contact area is small, the contact area between the treatment bed body 20 and the support bracket 10a is ensured to be large, so that the base body 10b can effectively support the treatment bed body 20, and effectively reduce the floor space of the treatment bed 100. In addition, the base body 10b in the treatment bed 100 can be directly fixedly connected to the rigid support part in the radiotherapy equipment, further reducing the floor space of the radiotherapy equipment, so that the radiotherapy equipment can be used in a room with a smaller area. It should be noted that the base body 10b is not in contact with the ground means that the base body 10b is suspended on the rigid support part.

[0057] When the base body 10b in the treatment bed 100 is directly fixedly connected to the rigid support part, the distance between the treatment bed body 20 and the treatment head provided in the radiotherapy equipment is relatively close, so the treatment bed 100 can quickly achieve the coincidence of the target area of ​​the patient on the treatment bed body 20 and the isocenter focus of the treatment head, thereby effectively improving the treatment efficiency of the radiotherapy equipment.

[0058] In summary, the treatment bed provided by the embodiment of the present invention comprises: a support bracket, a base body and a treatment bed body. One end of the support bracket is connected to the base body, and the support bracket supports the treatment bed body. By setting the treatment bed body on the support bracket, one end of the support bracket is fixedly connected to the base body, and the base body is connected to the rigid support part of the radiotherapy device, it is possible to ensure that the contact area between the treatment bed body and the support bracket is large when the base body does not contact the ground or the contact area is small, so that the base body can effectively support the treatment bed body, and effectively reduce the floor space of the treatment bed. In addition, the base body in the treatment bed can be directly fixedly connected to the rigid support part in the radiotherapy device, further reducing the floor space of the radiotherapy device, so that the radiotherapy device can be used in a room with a smaller area. When the base body in the treatment bed is directly fixedly connected to the rigid support part in the radiotherapy device, the distance between the treatment bed body and the treatment head set in the radiotherapy device is close, so the treatment bed can quickly achieve the coincidence of the target area of ​​the patient on the treatment bed with the isocenter focus of the treatment head, effectively improving the treatment efficiency of the radiotherapy device.

[0059] It should be noted here that Figure 2 As shown, at least one of the lower bottom surface 10b1 and the side surface 10b2 of the base body 10b is connected to the rigid support portion of the radiotherapy device.

[0060] Optional, such as Figure 3 As shown, Figure 3 1 is a schematic diagram of the structure of another treatment bed provided by an embodiment of the present invention. The treatment bed 100 may also include: a first drive assembly 30 disposed on the base body 10b, a second drive assembly 40 connected to the first drive assembly 30, and a third drive assembly 50 connected to the treatment bed body 20. The second drive assembly 40 is connected to the support bracket 10a, so that the first drive assembly 30 is connected to the support bracket 10a through the second drive assembly 40. The third drive assembly 50 may be disposed on the support bracket 10a.

[0061] In the embodiment of the present invention, the first driving assembly 30 is configured to drive the supporting bracket 10a to move in the height direction of the treatment bed body 20, so as to drive the treatment bed body 20 to move in the height direction of the treatment bed body 20; the second driving assembly 40 is configured to drive the supporting bracket 10a to move in the transverse direction of the treatment bed body 20, so as to drive the treatment bed body 20 to move in the transverse direction of the treatment bed body 20; the third driving assembly 50 is configured to drive the treatment bed body 20 to move in the longitudinal direction of the treatment bed body 20.

[0062] The following embodiments respectively describe the specific structures of the first drive assembly 30, the second drive assembly 40 and the third drive assembly 50. Figure 3 and Figure 4 As shown, Figure 4 yes Figure 3 The three-dimensional diagram of the treatment bed is shown. In the following embodiments, the height direction of the treatment bed body 20 is the z-axis direction, the longitudinal direction of the treatment bed treatment bed body 20 is the y-axis direction, and the transverse direction of the treatment bed treatment bed body 20 is the x-axis direction.

[0063] For the first drive assembly 30, Figure 5 As shown, Figure 5 3 is a schematic diagram of the structure of a first driving assembly provided by an embodiment of the present invention. The first driving assembly 30 may include: a first driving motor 31 , a driving rod 32 and a driving connector 33 .

[0064] One end of the driving rod 32 is connected to the first driving motor 31, and the other end is connected to the base body 10b or the rigid support part of the radiotherapy equipment. Figure 5 The first driving assembly 30 shown is schematically illustrated by taking the other end of the driving rod 32 and the base body 10b as an example. In the embodiment of the present invention, the extension direction of the driving rod 32 is parallel to the z-axis direction. The first driving motor 31 can drive the driving rod 32 to rotate along the axis inside it. Exemplarily, a bearing seat 11 can be provided on the base body 10b, and the other end of the driving rod 32 can be provided with a bearing ( Figure 5 (not marked), the driving rod 32 can be connected to the base body 10b through the cooperation of the bearing and the bearing seat 11. The driving rod 32 rotates under the drive of the first driving motor 31 and rotates smoothly under the cooperation of the bearing and the bearing seat 11.

[0065] The driving connector 33 is connected to the support bracket 10a and is movably connected to the driving rod 32. The driving connector 33 is configured to drive the support bracket to move along the driving rod 32 in the z-axis direction when the first driving motor 31 drives the driving rod 32 to rotate. Exemplarily, the driving rod 32 can be a screw rod; the driving connector 33 can include: a carriage 33a and a driving nut 33b. The carriage 33a can be connected to the support bracket 10a; the driving nut 33b can be sleeved on the driving rod 32, that is, the driving nut 33b is threadedly connected to the driving rod 32, and the driving nut 33b can be fixedly connected to the carriage 33a. When the driving rod 32 rotates, the driving nut 33b can move along the driving rod 32 in the z-axis direction, so that the support bracket can be driven to move in the z-axis direction through the carriage 33a.

[0066] In the related art, a lifting drive unit is usually provided in the support base, through which the treatment bed body can be controlled to move in the z-axis direction. Figure 6 As shown, Figure 6 It is a structural schematic diagram of a lifting drive unit provided by the related technology. The lifting drive unit includes: a hinge structure 031 and a drive structure 032, and the drive structure 032 can drive the hinge structure 031 to extend and retract in the z-axis direction. In the hinge structure 031, each connection position (such as connection position a and connection position b, etc.) can move in the z-axis direction. On the one hand, it will lead to low movement accuracy of the treatment bed body driven by the hinge structure 031, and it is impossible to accurately control the designated position of the treatment bed body, resulting in poor treatment accuracy of the radiotherapy equipment; on the other hand, it will lead to poor support rigidity of the hinge structure, resulting in low stability of the treatment bed.

[0067] In the embodiment of the present invention, Figure 5 As shown, the first drive assembly 30 for controlling the movement of the treatment bed body in the z-axis direction includes: a drive rod 32 and a drive nut 33b. Usually, only one position in the first drive assembly 30 can move, that is, the position where the drive nut 33b is located moves, so that the support rigidity of the first drive assembly 30 is relatively high, and the stability of the radiotherapy equipment is effectively improved. When it is necessary to control the movement of the treatment bed body, the first drive assembly 30 can accurately control the movement of the treatment bed body to a specified position, which effectively improves the treatment accuracy of the radiotherapy equipment.

[0068] Optionally, the first driving assembly 30 may further include: a carriage accommodating cavity 34 disposed in the base body 10b, the carriage accommodating cavity 34 being used to accommodate the carriage 33a and being movably connected to the carriage 33a. The first driving motor 31 and the driving rod 32 in the embodiment of the present invention may both be disposed in the carriage accommodating cavity 34.

[0069] In order to enable the treatment bed body to move accurately along the z-axis direction, it is necessary to ensure that the carriage 33a can accurately move along the z-axis direction in the carriage accommodating cavity 34. A static guide rail ( Figure 5 The carriage 33a is provided with a movable guide rail 33c cooperating with the static guide rail. The carriage 33a can move accurately along the z-axis direction in the carriage accommodating cavity 34 when the first driving motor 31 drives the driving rod 32 to rotate under the cooperation of the static guide rail and the movable guide rail 33c.

[0070] Optionally, the first drive motor 31 may further include: a first reducer 35 and an electromagnetic brake 36. The first end of the first reducer 35 is connected to one end of the drive rod 32, the second end of the first reducer 35 is connected to the first drive motor 31, and the third end of the first reducer 35 is connected to the electromagnetic brake 36, and the electromagnetic brake 36 may be coaxially arranged with the drive shaft of the first drive motor 31.

[0071] When the first driving motor 31 drives the driving rod 32 to rotate, since under the condition of constant output power, the smaller the rotation speed, the greater the torque, the first reducer 35 can decelerate the driving rod 32 driven by it, so that the driving rod 32 can obtain a larger torque, thereby making it easier for the driving rod 32 to drive the support bracket to move in the z-axis direction.

[0072] During the movement of the treatment bed body, when it is necessary to control the treatment bed body to stop moving in the z-axis direction, the electromagnetic brake 36 can clamp the transmission shaft of the first drive motor 31 to stop the drive rod 32 from rotating, thereby stopping the treatment bed body from moving in the z-axis direction.

[0073] Optionally, the first driving component 30 may further include: a position detection device; the position detection device may include: at least one of an encoder and a sensor.

[0074] Exemplarily, the first drive assembly 30 may also include: a first encoder 37 coaxially arranged with the drive rod 32, the transmission shaft of the first encoder 37 may be coaxially connected with the drive rod 32, when the drive rod 32 rotates, the transmission shaft of the first encoder 37 also rotates, and the first encoder 37 can detect the position of the treatment bed body in the z-axis direction by the number of rotations of the transmission shaft inside it. In an embodiment of the present invention, the first drive assembly 30 may also include: a built-in encoder also arranged inside the first drive motor 31, the transmission shaft of the built-in encoder is coaxially connected with the transmission shaft of the first drive motor 31, when the first drive motor 31 is working, the built-in encoder can also detect the position of the treatment bed body in the z-axis direction by the number of rotations of the transmission shaft inside it.

[0075] In an optional implementation, before the first driving component 30 drives the treatment bed body, the first driving component 30 can drive the treatment bed body only when the position of the treatment bed body in the z-axis direction detected by the first encoder 37 is the same as the position of the treatment bed body in the z-axis direction detected by the built-in encoder; otherwise, the first driving component 30 will not drive the treatment bed body. At this time, the first driving component 30 can generate an alarm message for prompting the operator that the position of the treatment bed body in the z-axis direction cannot be located, thereby effectively avoiding inaccurate positioning of the treatment bed body in the z-axis direction.

[0076] For the second driving assembly 40, Figure 7 As shown, Figure 7 4 is a schematic diagram of the structure of a second driving assembly provided by an embodiment of the present invention. The second driving assembly 40 may include: a second driving motor 41, a driving guide bar 42 and a driving wheel 43. The extending direction of the driving guide bar 42 may be parallel to the x-axis direction.

[0077] In the embodiment of the present invention, the drive guide bar 42 and the drive wheel 43 may be arranged at different positions. The following embodiments are schematically described by taking two exemplary implementation methods as examples:

[0078] In a first exemplary embodiment, the driving guide bar 42 may be disposed on the first driving component. For example, the driving guide bar 42 may be disposed on the first driving component. Figure 5 The driving wheel 43 can be arranged on the carriage 33a in the first driving assembly 30 shown. The driving wheel 43 can be arranged on the supporting bracket, for example, the second driving assembly 40 can also include a supporting seat 401, the driving wheel 43 can be arranged on the supporting surface S of the supporting seat 401, and the supporting seat 401 can be fixedly connected to the supporting bracket, so as to realize that the driving wheel 43 is arranged on the supporting bracket.

[0079] The driving wheel 43 may be connected to the second driving motor 41 and movably connected to the driving guide bar 42. The driving wheel 43 is configured to drive the supporting bracket to move along the driving guide bar 42 in the x-axis direction under the drive of the second driving motor 41.

[0080] In a second exemplary embodiment, the driving wheel 43 may be disposed on the first driving assembly. For example, the second driving assembly 40 may further include a support seat 401. The driving wheel 43 may be disposed on a supporting surface S of the support seat 401. The support seat 401 may be connected to a support surface S of the support seat 401. Figure 5 The carriage 33a in the first driving assembly 30 is fixedly connected, so that the driving wheel 43 is arranged on the first driving assembly. The driving guide bar 42 can be arranged on the supporting bracket.

[0081] The driving wheel 43 may be connected to the second driving motor 41 and movably connected to the driving guide bar 42 . The driving guide bar 42 is configured to drive the supporting bracket to move in the x-axis direction when the second driving motor 41 drives the driving wheel 43 to rotate.

[0082] In the embodiment of the present invention, the driving guide bar 42 may be a driving rack, the driving wheel 43 may be a driving gear, and the driving rack and the driving gear are meshed with each other, thereby realizing a movable connection between the driving guide bar 4 and the driving wheel 43. It should be noted that, Figure 7 The transmission mode between the driving guide bar 42 and the driving wheel 43 is a rack and pinion transmission as an example for schematic illustration. In another optional implementation, the transmission mode between the driving guide bar 42 and the driving wheel 43 can also be a belt transmission mode, which is not limited in the embodiment of the present invention.

[0083] Optionally, the second drive assembly 40 may further include: a first clutch 44. The two ends of the first clutch 44 are respectively connected to a driving wheel 43 and a second driving motor 41. For example, assuming that the second drive assembly 40 also includes a support seat 401, the driving wheel 43 may be arranged on a supporting surface S of the support seat 401, and the first clutch 44 may be arranged on a surface opposite to the supporting surface S of the support seat 401.

[0084] In the embodiment of the present invention, when the second drive motor 41 is powered on, the first clutch 44 can be automatically connected to the drive wheel 43 to realize the driving of the support bracket by the second drive motor 41. When the second drive motor 41 is powered off, the first clutch 44 can automatically disconnect from the drive wheel 43. If the radiotherapy device is suddenly powered off during normal operation, the connection between the second drive motor 41 and the drive wheel 43 can be disconnected through the first clutch 44. At this time, the operator can manually control the movement of the support bracket in the x-axis direction to enable the patient on the treatment bed body to evacuate quickly.

[0085] Optionally, the second driving assembly 40 may further include: a second reducer 45, the second reducer 45 is located between the second driving motor 41 and the first clutch 44, and the second driving motor 41, the second reducer 45, the first clutch 44 and the driving wheel 43 are sequentially connected. The second reducer 45 allows the driving wheel 43 to obtain a larger torque, thereby making it easier to drive the support bracket to move in the x-axis direction.

[0086] Optionally, the second driving component 40 may further include: a position detection device; the position detection device may include: at least one of an encoder and a sensor.

[0087] Exemplarily, the second drive assembly 40 may include: two second encoders 46 disposed on a surface of the support seat 401 opposite to the support surface S. The second drive assembly 40 may also include: two position detection wheels 47 corresponding to the two second encoders 46. Each position detection wheel 47 is coaxially connected to the transmission shaft of the corresponding second encoder 46. Assuming that the driving guide bar 42 can be a driving rack, the two position detection wheels 47 can both be gears and are meshed with the driving guide bar 42. When the driving guide bar 42 moves relative to the driving wheel, each position detection wheel 47 rotates accordingly, and each second encoder 46 can detect the position of the treatment bed body in the x-axis direction by the number of rotations of the transmission shaft inside it.

[0088] It should be noted that there may be one second encoder 46 , and the number thereof is not limited.

[0089] In the embodiment of the present invention, since the connection between the first clutch 44 and the driving wheel 43 is disconnected when the second driving motor 41 is powered off, the built-in encoder in the second driving motor 41 cannot correctly reflect the position of the treatment bed body in the x-axis direction, so two second encoders 46 are required to detect the position of the treatment bed body in the x-axis direction. For example, before the second driving component 40 drives the treatment bed body, the second driving component 40 can drive the treatment bed body only when the positions of the treatment bed body in the x-axis direction detected by the two second encoders 46 are the same; otherwise, the second driving component 40 will not drive the treatment bed body. At this time, the second driving component 40 can generate an alarm message for prompting the operator that the position of the treatment bed body in the x-axis direction cannot be located, effectively avoiding inaccurate positioning of the treatment bed body in the x-axis direction.

[0090] For the third drive assembly 50, as Figure 8 As shown, Figure 8 1 is a schematic diagram of the structure of a third driving assembly 50 provided in an embodiment of the present invention. The third driving assembly 50 may include: a third driving motor 51, a conveyor belt assembly 52 and a treatment bed body connector 53.

[0091] The conveyor belt assembly 52 is connected to the third drive motor 51. The treatment bed body connecting member 53 is disposed on the conveyor belt assembly 52 and connected to the treatment bed body. The treatment bed body connecting member 53 is configured to drive the treatment bed body to move in the y-axis direction when the third drive motor 51 drives the conveyor belt assembly 52 to rotate.

[0092] Exemplarily, the conveyor belt assembly 52 may include: a conveyor belt body 52a, a first synchronous pulley 52b, a second synchronous pulley 52c and a driving pulley 52d. The conveyor belt body 52a may be: a synchronous belt, a steel belt or a friction-type transmission belt. The driving pulley 52d is located between the first synchronous pulley 52b and the second synchronous pulley 52c. The first synchronous pulley 52b, the second synchronous pulley 52c and the driving pulley 52d are all in contact with the conveyor belt body 52a. The conveyor belt body 52a is also fixedly connected to the treatment bed body connector 53. The line connecting the axis of the first synchronous pulley 52b and the axis of the second synchronous pulley 52c may be parallel to the y-axis direction.

[0093] In the embodiment of the present invention, the third driving motor 51 can be connected to the driving pulley 52d, and the third driving motor 51 can drive the driving pulley 52d to rotate, and the center angle of the arc surface of the driving pulley 52d in contact with the conveyor belt body 52a is greater than or equal to a preset angle, and the preset angle is the minimum center angle of the driving pulley 52d that can drive the treatment bed body to move. If the third driving motor 51 drives the driving pulley 52d to rotate, when the center angle of the arc surface of the driving pulley 52d in contact with the conveyor belt body 52a is greater than or equal to the preset angle, the driving pulley 52d can drive the treatment bed body to move along the y-axis direction through the conveyor belt body 52a.

[0094] When the treatment bed provided in the embodiment of the present invention is actually used, the treatment bed body can move between the first synchronous pulley 52b and the second synchronous pulley 52c under the action of the treatment bed body connecting member 53. In the embodiment of the present invention, the width of the treatment bed body connecting member 53 in the y-axis direction is much smaller than the distance between the first synchronous pulley 52b and the second synchronous pulley 52c. Therefore, the movement stroke of the treatment bed body in the y-axis direction is relatively large.

[0095] In order to ensure that the central angle of the arc surface of the driving pulley 52d in contact with the conveyor belt body 52a is greater than or equal to the preset angle, two exemplary implementation methods are provided below:

[0096] In a first exemplary implementation, the driving pulley 52d needs to be disposed below the first synchronous pulley 52b and the second synchronous pulley 52c, and a certain distance between the driving pulley 52d and the first synchronous pulley 52b in the z-axis direction is ensured. Fig. 9 As shown, Fig. 9It is a side view of another third drive assembly provided by an embodiment of the present invention. Under the action of the driving pulley 52d, the first synchronous pulley 52b and the second synchronous pulley 52c, the conveyor belt body 52a can be surrounded by a shape similar to an inverted triangle. According to the distance between the first synchronous pulley 52b and the second synchronous pulley 52c, and the size of the preset angle, the minimum distance between the driving pulley 52d and the first synchronous pulley 52b in the z-axis direction can be calculated. When the driving pulley 52d and the first synchronous pulley 52b in the z-axis direction are greater than or equal to the minimum distance, it can be ensured that the center angle of the arc surface in the driving pulley 52d that contacts the conveyor belt body 52a is greater than or equal to the preset angle.

[0097] In a second exemplary implementation, Figure 8 As shown, the conveyor belt assembly 52 may further include: at least one idler wheel, each of which is located between the first synchronous pulley 52b and the second synchronous pulley 52c, and each of which is in contact with the conveyor belt body 52a. For example, the at least one idler wheel includes: a first idler wheel 52e and a second idler wheel 52f located on both sides of the driving pulley 52d, such as Fig.10 As shown, Fig.10 yes Figure 8 5. The side view of the third drive assembly is shown in FIG. 5. The first idler wheel 52e and the second idler wheel 52f located on both sides of the drive pulley 52d can increase the center angle of the arc surface in contact with the conveyor belt body 52a in the drive pulley 52d to be greater than or equal to the preset angle. In addition, the first idler wheel 52e and the second idler wheel 52f can reduce the distance between the drive pulley 52d and the first synchronous pulley in the z-axis direction, effectively reducing the space occupied by the third drive assembly 50 in the treatment bed.

[0098] Optional, such as Figure 8 As shown, the third driving assembly 50 may further include: a second clutch 54, the two ends of which are respectively connected to the third driving motor 51 and the conveyor belt assembly 52. ​​For example, the third driving assembly 50 may further include: a third reducer 55, which is located between the third driving motor 51 and the second clutch 54, and the third driving motor 51, the third reducer 55, the second clutch 54 and the driving pulley 52d in the conveyor belt assembly 52 are sequentially connected. The third reducer 55 allows the driving pulley 52d to obtain a larger torque, thereby making it easier to drive the treatment bed body to move in the y-axis direction.

[0099] In the embodiment of the present invention, when the third drive motor 51 is powered on, the second clutch 54 can be automatically connected to the drive pulley 52d to realize the driving of the treatment bed body by the third drive motor 51. When the third drive motor 51 is powered off, the second clutch 54 can automatically disconnect from the drive pulley 52d. If the radiotherapy device is suddenly powered off during normal operation, the connection between the third drive motor 51 and the drive pulley 52d can be disconnected through the second clutch 54. At this time, the operator can manually control the movement of the treatment bed body in the y-axis direction to enable the patient on the treatment bed body to be evacuated quickly.

[0100] Optionally, the third driving component 50 may further include: a position detection device; the position detection device may include: at least one of an encoder and a sensor.

[0101] For example, Figure 8 As shown, the third driving assembly 50 may further include: two third encoders 56, wherein the transmission shaft of one of the two third encoders 56 is coaxially connected to the first synchronous pulley 52b, and the transmission shaft of the other third encoder is coaxially connected to the second synchronous pulley 52c. Each third encoder 56 can detect the position of the treatment bed body in the y-axis direction by the number of rotations of the transmission shaft inside it.

[0102] It should be noted that there may be only one third encoder 56 , and the number thereof is not limited.

[0103] In the embodiment of the present invention, since the connection between the second clutch 54 and the driving pulley 52d is disconnected when the third driving motor 51 is powered off, the built-in encoder in the third driving motor 51 cannot correctly reflect the position of the treatment bed body in the y-axis direction, and therefore two third encoders 56 are required to detect the position of the treatment bed body in the y-axis direction. For example, before the third driving assembly 50 drives the treatment bed body, the third driving assembly 50 can drive the treatment bed body only when the positions of the treatment bed body in the y-axis direction detected by the two third encoders 56 are the same; otherwise, the third driving assembly 50 will not drive the treatment bed body. At this time, the third driving assembly 50 can generate an alarm message for prompting the operator that the position of the treatment bed body in the y-axis direction cannot be located, effectively avoiding inaccurate positioning of the treatment bed body in the y-axis direction.

[0104] Optional, please refer to Fig.11 , Fig.111 is a structural schematic diagram of another treatment bed provided by an embodiment of the present invention. Each drive assembly may further include a drive controller, and each drive controller is integrated on the support bracket 10a. For example, the first drive assembly 30 may further include: a first drive controller 30a, the second drive assembly 40 may further include: a second drive controller 40a, and the third drive assembly 50 may further include: a third drive controller 50a.

[0105] The driving controller in each driving assembly is electrically connected to the driving motor and the encoder in the driving assembly, respectively. The encoder can send the position information of the treatment bed body 20 detected by it to the driving controller, and the driving controller controls the driving motor based on the position information of the treatment bed body 20 to achieve precise movement of the treatment bed body 20. For example, for the third driving assembly 50, the third driving controller 50a in the third driving assembly 50 is electrically connected to the third driving motor and two third encoders, respectively. The two third encoders can detect the position information of the treatment bed body in the y-axis direction. The third driving controller 50a controls the third driving motor based on the position information of the treatment bed body 20 in the y-axis direction to achieve precise movement of the treatment bed body 20 in the y-axis direction.

[0106] In the embodiment of the present invention, the control cabinet system used to control the movement of the treatment bed body in the related art can be replaced by three distributed drive controllers, and the three drive controllers can be integrated on the support bracket 10a, effectively reducing the occupied space of the radiotherapy equipment. In addition, each drive controller can be installed at a position close to the corresponding drive motor and encoder, effectively shortening the length of the cable connecting the drive controller and the drive motor, and between the drive controller and the encoder.

[0107] Optional, such as Fig.11 As shown, the treatment bed 100 may further include a drag chain 70. The drag chain 70 is provided with cables in the treatment bed 100, and the cables in the treatment bed 100 can be protected by the drag chain 70, thereby preventing the cables in the treatment bed 100 from being damaged during the movement of the treatment bed body 20.

[0108] In summary, the treatment bed provided by the embodiment of the present invention comprises: a support bracket, a base body and a treatment bed body. One end of the support bracket is connected to the base body, and the support bracket supports the treatment bed body. The treatment bed body is arranged on the support bracket, one end of the support bracket is fixedly connected to the base body, and the base body is connected to the rigid support part of the radiotherapy device. In this way, when the base body does not contact the ground or the contact area is small, the contact area between the treatment bed body and the support bracket is large, so that the base body can effectively support the treatment bed body, and effectively reduce the floor space of the treatment bed. In addition, the base body in the treatment bed can be directly fixedly connected to the rigid support part in the radiotherapy device, further reducing the floor space of the radiotherapy device, so that the radiotherapy device can be used in a room with a small area. When the base body in the treatment bed is directly fixedly connected to the rigid support part in the radiotherapy device, the distance between the treatment bed body and the treatment head provided in the radiotherapy device is close, so the treatment bed can quickly achieve the coincidence of the target area of ​​the patient on the treatment bed with the isocenter focus of the treatment head, effectively improving the treatment efficiency of the radiotherapy device.

[0109] The present invention also provides a radiotherapy device, such as Fig.12 As shown, the radiotherapy device may include: a treatment bed 100 and a rigid support portion 200. The treatment bed 100 may be: Figure 2 , Figure 3 , Figure 4 or Fig.11 The treatment couch 100 is shown. The rigid support portion 200 is connected to the base body 10 b in the treatment couch 100 .

[0110] The rigid support part 200 can be the base of a drum-type rotating frame, or can be the support part of a fixed frame. When the rigid support part 200 is the base of a drum-type rotating frame, the base is connected to the side 10b2 of the base body 10b, so that the base body 10b does not contact the ground. Of course, the base can extend below the treatment bed. At this time, the base can be connected to the lower bottom surface 10b1 of the base body 10b, or the base can be connected to both the side 10b2 and the lower bottom surface 10b1 of the base body 10b. In this way, compared with the related art, the area of ​​the base body 10b in contact with the ground (extended base) is smaller.

[0111] The radiotherapy device may further include: a roller 300 on the base. The base body 10b in the treatment bed 100 may be fixedly connected to the rigid support part 200, effectively reducing the floor space occupied by the radiotherapy device, so that the radiotherapy device can be used in a room with a smaller area, and making the distance between the treatment bed body 20 in the treatment bed 100 and the treatment head arranged on the roller 300 closer, so that the treatment bed 100 can quickly achieve the coincidence of the target area of ​​the patient on the treatment bed 100 and the isocenter focus of the treatment head, effectively improving the treatment efficiency of the radiotherapy device.

[0112] The above descriptions are merely optional embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A treatment bed, characterized in that: include: The treatment bed body is used to carry the patient; A support bracket, supporting the treatment bed body; A base body connected to one end of the support bracket and configured to be fixedly connected to a rigid support portion of the radiotherapy device; wherein the rigid support portion is a base of a drum-type rotating frame, the rigid support portion is connected to a side surface of the base body, and the base body is suspended on the rigid support portion; A first driving assembly, disposed on the base body and connected to the supporting bracket, configured to drive the supporting bracket to move in a height direction of the treatment bed body; Wherein, the first driving assembly comprises: a first driving motor, a driving rod and a driving connecting piece, and a carriage accommodating cavity arranged in the base body; The driving rod is a lead screw, one end of which is connected to the first driving motor, and the other end of which is connected to the base body; the first driving motor and the driving rod are both arranged in the carriage accommodating cavity; The driving connection member includes: a carriage and a driving nut, wherein the carriage is movably connected to the base body in the carriage accommodating cavity, and the carriage is connected to the supporting bracket; the driving nut is sleeved on the driving rod, and the nut is fixedly connected to the carriage; the driving nut is configured to: when the first driving motor drives the driving rod to rotate, the supporting bracket is driven to move along the driving rod in the height direction of the treatment bed body through the carriage.

2. The treatment bed according to claim 1, characterized in that: The treatment bed also includes: The second driving assembly is connected to the first driving assembly and the supporting bracket, and is configured to drive the supporting bracket to move in the lateral direction of the treatment bed body.

3. The treatment bed according to claim 2, characterized in that: The second driving assembly comprises: a second drive motor; A driving guide bar, arranged on the first driving assembly; a driving wheel, arranged on the supporting bracket, connected to the second driving motor, and movably connected to the driving guide bar, and configured to drive the supporting bracket to move along the driving guide bar in the lateral direction of the treatment bed body under the drive of the second driving motor; Alternatively, the second driving component comprises: a second drive motor; a driving wheel, disposed on the first driving assembly and connected to the second driving motor; The driving guide bar is arranged on the supporting bracket and is movably connected with the driving wheel, and is configured to drive the supporting bracket to move in the lateral direction of the treatment bed body when the second driving motor drives the driving wheel to rotate.

4. The treatment bed according to claim 3, characterized in that: The treatment bed also includes: The third driving assembly is connected to the treatment bed body and is configured to drive the treatment bed body to move in the longitudinal direction of the treatment bed body.

5. The treatment bed according to claim 4, characterized in that: The third driving assembly comprises: A third drive motor; A conveyor belt assembly connected to the third driving motor; The treatment bed body connecting member is arranged on the conveyor belt assembly and connected to the treatment bed body, and is configured to drive the treatment bed body to move in the longitudinal direction of the treatment bed body when the third driving motor drives the conveyor belt assembly to rotate.

6. The treatment bed according to claim 4, characterized in that: The first drive assembly, the second drive assembly and the third drive assembly all further include: a position detection device.

7. The treatment bed according to claim 6, characterized in that: The position detection device includes: an encoder and / or a sensor.

8. A radiotherapy device, characterized in that: include: A treatment bed and a rigid support portion, wherein the treatment bed is the treatment bed according to any one of claims 1 to 7, and the treatment bed is fixedly connected to the rigid support portion.

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