CN111249628B - Treatment beds and radiotherapy equipment - Google Patents
Treatment beds and radiotherapy equipment Download PDFInfo
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- CN111249628B CN111249628B CN201811459707.3A CN201811459707A CN111249628B CN 111249628 B CN111249628 B CN 111249628B CN 201811459707 A CN201811459707 A CN 201811459707A CN 111249628 B CN111249628 B CN 111249628B
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 67
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001225 therapeutic effect Effects 0.000 description 67
- 230000005540 biological transmission Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011275 oncology therapy Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
- A61N5/1069—Target adjustment, e.g. moving the patient support
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
- A61N2005/1097—Means for immobilizing the patient
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
本发明公开了一种治疗床及放疗设备，属于医疗器械技术领域。该治疗床包括：治疗床本体、支撑支架和基座本体。该支撑支架支撑所述治疗床本体；该基座本体与所述支撑支架的一端连接，被配置为与放疗设备的刚性支撑部固定连接。在基座本体与地面不接触或接触的面积较小的情况下，保证治疗床本体与支撑支架之间的接触面积较大，使得基座本体能够有效的对治疗床本体起到支撑作用，有效的降低了治疗床的占地面积。
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
The invention relates to the technical field of medical equipment, in particular to a treatment bed and radiotherapy equipment.
Background
Radiation therapy is an important means for treating cancer, and radiation therapy equipment (radiotherapy equipment for short) is a key medical equipment for carrying out radiation therapy.
In the related art, radiotherapy apparatuses generally include a gantry and a treatment couch. The gantry may be a roller-type rotating gantry or a stationary gantry for setting a treatment head, the treatment couch for carrying a patient. Typically, the couch is movable in at least a couch longitudinal direction (also referred to as the y-axis direction), a couch lateral direction (also referred to as the x-axis direction), and a couch height direction (also referred to as the z-axis direction) such that a target region of the patient on the couch coincides with the isocenter of the treatment head to effect treatment of the patient.
Current treatment couch generally includes a support base and a couch body, with the support base being positioned at a central location in the couch body. In order to ensure that the support base can effectively support the therapeutic bed body, the contact area between the support base and the therapeutic bed body needs to be ensured to be larger, so that the occupied area of the therapeutic bed is larger, a certain distance is reserved between the therapeutic bed and the frame, and the occupied area of the radiotherapy equipment is further enlarged, so that the radiotherapy equipment cannot be used in a room with smaller area.
Disclosure of Invention
The embodiment of the invention provides a treatment bed and radiotherapy equipment. The problem that prior art's radiotherapy equipment can't use in the less room of area can be solved, technical scheme is as follows:
In a first aspect, there is provided a therapeutic bed comprising:
the treatment bed body is used for bearing a patient;
a support bracket for supporting the therapeutic bed body;
The base body is connected with one end of the support bracket and is configured to be fixedly connected with the rigid support part of the radiotherapy equipment.
Optionally, the treatment couch further comprises:
the first driving assembly is arranged on the base body, connected with the supporting bracket and used for driving the supporting bracket to move in the height direction of the therapeutic bed body.
Optionally, the first driving assembly includes:
a first driving motor;
One end of the driving rod is connected with the first driving motor, and the other end of the driving rod is connected with the base body or the rigid supporting part of the radiotherapy equipment;
The driving connecting piece is connected with the supporting bracket and movably connected with the driving rod, and is configured to drive the supporting bracket to move along the driving rod in the height direction of the therapeutic bed body when the driving rod is driven by the first driving motor to rotate.
Optionally, the treatment couch further comprises:
And the second driving assembly is connected with the first driving assembly and the supporting bracket and is configured to drive the supporting frame to move in the transverse direction of the therapeutic bed body.
Optionally, the second driving assembly includes:
A second driving motor;
A drive guide bar disposed on the first drive assembly;
The driving wheel is arranged on the supporting bracket, is connected with the second driving motor and is movably connected with the driving guide bar and is configured to drive the supporting bracket to move along the driving guide bar in the transverse direction of the therapeutic bed body under the driving of the second driving motor;
Or the second drive assembly comprises:
A second driving motor;
the driving wheel is arranged on the first driving assembly and is connected with the second driving motor;
The driving guide strip 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 transverse direction of the therapeutic bed body when the second driving motor drives the driving wheel to rotate.
Optionally, the treatment couch further comprises:
and a third driving assembly connected with the therapeutic bed body and configured to drive the therapeutic bed body to move in the longitudinal direction of the therapeutic bed body.
Optionally, the third driving assembly includes:
A third driving motor;
The conveyor belt assembly is connected with the third driving motor;
The treatment bed body connecting piece is arranged on the conveyor belt assembly and connected with 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.
Optionally, the first driving assembly, the second driving assembly and the third driving assembly each further comprise a position detection device.
Optionally, the position detection means comprises an encoder and/or a sensor.
In a second aspect, there is provided a radiotherapy apparatus comprising a treatment couch and a rigid support, the treatment couch being any of the treatment couch of the first aspect, the treatment couch being fixedly connected to the rigid support.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
Through the setting of treatment bed body on the support bracket, the one end and the base body fixed connection of support bracket, and the base body is connected with the rigid support portion of radiotherapy equipment, like this, under the condition that the area of base body and ground non-contact or contact is less, guarantee that the area of contact between treatment bed body and the support bracket is great for the base body can effectually play the supporting role to the treatment bed body, effectually reduced the area of treatment bed. And, the base body in this treatment couch can be directly with the rigid support portion fixed connection in the radiotherapy equipment, further reduced the area of radiotherapy equipment for this radiotherapy equipment can use in the less room of area. When the base body in the treatment couch is directly fixedly connected with the rigid supporting part in the radiotherapy equipment, the distance between the treatment couch body and the treatment head arranged in the radiotherapy equipment is relatively short, so that the treatment couch can rapidly realize the superposition of the target area of a patient on the treatment couch and the isocenter focus of the treatment head, and the treatment efficiency of the radiotherapy equipment is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a radiotherapy apparatus provided in the related art;
FIG. 2 is a schematic view of a therapeutic bed according to an embodiment of the present invention;
FIG. 3 is a schematic view of another embodiment of a treatment couch;
FIG. 4 is a perspective view of the treatment couch shown in FIG. 3;
FIG. 5 is a schematic diagram of a first driving assembly according to an embodiment of the present invention;
Fig. 6 is a schematic structural view of a lifting driving unit provided in the related art;
FIG. 7 is a schematic diagram of a second driving assembly according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a third driving assembly according to an embodiment of the present invention;
FIG. 9 is a side view of another third drive assembly provided in accordance with an embodiment of the present invention;
FIG. 10 is a side view of the third drive assembly shown in FIG. 8;
FIG. 11 is a schematic view of a still further treatment couch according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a radiotherapy apparatus according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a radiotherapy apparatus according to the related art. The radiotherapy apparatus may comprise a treatment couch 02 and a gantry 01. The frame 01 can be a drum-type rotating frame or a fixed frame. The couch 02 may include a support base 021 and a couch body 022, the support base 021 being generally located at an intermediate position of the couch body 022. In order to ensure that the support base 021 can effectively support the treatment couch body 022, a larger contact area between the support base 021 and the treatment couch body 022 needs to be ensured, resulting in a larger floor area of the treatment couch 02. And because a certain distance exists between the treatment bed 02 and the stand 01, the occupied area of the radiotherapy equipment is further enlarged, so that the radiotherapy equipment cannot be used in a room with a smaller area.
When a certain distance exists between the treatment couch 02 and the stand 01, the distance between the treatment couch body 022 and the treatment head arranged in the stand 01 is relatively short, the treatment couch 02 needs to be controlled for a relatively long time to ensure that the target area of the patient on the treatment couch 02 coincides with the isocenter focus of the treatment head, and therefore the treatment efficiency of the radiotherapy equipment is relatively low.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a treatment couch according to an embodiment of the present invention, and the treatment couch 100 may include:
a support bracket 10a, a base body 10b and a treatment couch body 20.
The couch body 20 is for carrying a patient. The support bracket 10a supports the couch body 20. The base body 10b is connected to one end of a support bracket 10a, the base body 10b being configured to be fixedly connected to a rigid support portion of the radiotherapy apparatus.
In the embodiment of the invention, the therapeutic bed body 20 is arranged on the support bracket 10a, one end of the support bracket 10a is connected with the base body 10b, and the base body is connected with the rigid support part of the radiotherapy equipment, so that the contact area between the therapeutic bed body 20 and the support bracket 10a is ensured to be larger under the condition that the base body 10b is not contacted with the ground or the contact area is smaller, the base body 10b can effectively support the therapeutic bed body 20, and the occupied area of the therapeutic bed 100 is effectively reduced. And, the base body 10b in this treatment couch 100 can be directly with the rigid support fixed connection in the radiotherapy equipment, further reduced the area of occupation of the radiotherapy equipment for this radiotherapy equipment can use in the room that the area is less. Note that the base body 10b does not contact the ground means that the base body 10b is suspended on the rigid support portion.
When the base body 10b in the treatment couch 100 is directly fixedly connected with the rigid support portion, the distance between the treatment couch body 20 and the treatment head arranged in the radiotherapy equipment is relatively short, so that the treatment couch 100 can rapidly realize the coincidence of the target region of the patient on the treatment couch body 20 and the isocenter focus of the treatment head, and the treatment efficiency of the radiotherapy equipment is effectively improved.
In summary, the therapeutic bed provided by the embodiment of the invention comprises a support bracket, a base body and a therapeutic bed body. One end of the support bracket is connected with the base body, and the support bracket supports the treatment bed body. Through the setting of treatment bed body on the support frame, the one end and the base body fixed connection of support frame, the base body is connected with the rigid support portion of radiotherapy equipment, can be under the less circumstances of base body and ground non-contact or area of contact, guarantees that the area of contact between treatment bed body and the support frame is great for the base body can effectually play the supporting role to the treatment bed body, effectually reduced the area of treatment bed. And, the base body in this treatment couch can be directly with the rigid support portion fixed connection in the radiotherapy equipment, further reduced the area of radiotherapy equipment for this radiotherapy equipment can use in the less room of area. When the base body in the treatment couch is directly fixedly connected with the rigid supporting part in the radiotherapy equipment, the distance between the treatment couch body and the treatment head arranged in the radiotherapy equipment is relatively short, so that the treatment couch can rapidly realize the superposition of the target area of a patient on the treatment couch and the isocenter focus of the treatment head, and the treatment efficiency of the radiotherapy equipment is effectively improved.
As shown in fig. 2, at least one of the bottom surface 10b1 and the side surface 10b2 of the base body 10b is connected to a rigid support portion of the radiotherapy apparatus.
Alternatively, as shown in fig. 3, fig. 3 is a schematic structural diagram of another therapeutic bed according to an embodiment of the present invention. The treatment couch 100 may further include a first drive assembly 30 disposed on the base body 10b, a second drive assembly 40 coupled to the first drive assembly 30, and a third drive assembly 50 coupled to the treatment couch body 20. The second driving assembly 40 is connected to the support bracket 10a such that the first driving assembly 30 is connected to the support bracket 10a through the second driving assembly 40. The third driving assembly 50 may be provided on the support bracket 10 a.
In an embodiment of the present invention, the first driving assembly 30 is configured to drive the support bracket 10a to move in the height direction of the couch body 20 to drive the couch body 20 to move in the height direction of the couch body 20, the second driving assembly 40 is configured to drive the support bracket 10a to move in the transverse direction of the couch body 20 to drive the couch body 20 to move in the transverse direction of the couch body 20, and the third driving assembly 50 is configured to drive the couch body 20 to move in the longitudinal direction of the couch body 20.
The following embodiments respectively describe specific structures of the first driving assembly 30, the second driving assembly 40, and the third driving assembly 50. As shown in fig. 3 and 4, fig. 4 is a perspective view of the treatment couch shown in fig. 3, and the following embodiments are schematically illustrated in which the height direction of the treatment couch body 20 is the z-axis direction, the longitudinal direction of the treatment couch body 20 is the y-axis direction, and the transverse direction of the treatment couch body 20 is the x-axis direction.
As shown in fig. 5, fig. 5 is a schematic structural diagram of a first driving assembly 30 according to an embodiment of the present invention. The first driving assembly 30 may include a first driving motor 31, a driving lever 32, and a driving link 33.
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 a rigid support portion of the radiotherapy apparatus. The first driving unit 30 shown in fig. 5 is schematically illustrated by taking the other end of the driving lever 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 drive motor 31 is capable of rotating the drive rod 32 along its internal axis. Illustratively, the base body 10b may be provided with a bearing housing 11, the other end of the driving rod 32 may be provided with a bearing (not shown in fig. 5), the driving rod 32 may be connected to the base body 10b through the engagement of the bearing with the bearing housing 11, the driving rod 32 is rotated by the driving of the first driving motor 31, and is smoothly rotated by the engagement of the bearing and the bearing housing 11.
The driving link 33 is connected to the support bracket 10a and is movably connected to the driving lever 32. The driving connection member 33 is configured to drive the support bracket to move along the driving rod 32 in the z-axis direction when the driving rod 32 is driven to rotate by the first driving motor 31. The driving rod 32 may be a screw rod, and the driving connection 33 may include a carriage 33a and a driving nut 33b, for example. The carriage 33a may be connected to the support bracket 10a, the driving nut 33b may be sleeved on the driving rod 32, that is, the driving nut 33b is screwed to the driving rod 32, and the driving nut 33b may be fixedly connected to the carriage 33 a. 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 carriage 33a can drive the support bracket to move in the z-axis direction.
In the related art, a lift driving unit is generally provided in the support base, by which the couch body can be controlled to move in the z-axis direction. As shown in fig. 6, fig. 6 is a schematic structural view of a lifting driving unit provided in the related art. The lifting driving unit comprises a hinge structure 031 and a driving structure 032, wherein the driving structure 032 can drive the hinge structure 031 to stretch in the z-axis direction. In the hinge structure 031, each connection position (for example, connection position a and connection position b) can move in the z-axis direction, which can result in lower movement accuracy of driving the therapeutic bed body to move through the hinge structure 031, and poor therapeutic accuracy of radiotherapy equipment caused by the failure to accurately control the designated position of the therapeutic bed body to move, and poor support rigidity of the hinge structure, and thus lower stability of the therapeutic bed.
In the embodiment of the present invention, as shown in fig. 5, the first driving assembly 30 for controlling the movement of the therapeutic bed body in the z-axis direction includes a driving rod 32 and a driving nut 33b, and only one position of the first driving assembly 30 can move, that is, the position of the driving nut 33b moves, so that the supporting rigidity of the first driving assembly 30 is higher, and the stability of the radiotherapy apparatus is effectively improved. When the movement of the therapeutic bed body needs to be controlled, the first driving assembly 30 can accurately control the therapeutic bed body to move at the designated position, so that the treatment precision of the radiotherapy equipment is effectively improved.
Optionally, the first driving assembly 30 may further include a carriage accommodating cavity 34 disposed in the base body 10b, where the carriage accommodating cavity 34 is configured to accommodate the carriage 33a and is movably connected with the carriage 33 a. The first driving motor 31 and the driving lever 32 in the embodiment of the present invention may be disposed in the carriage accommodating chamber 34.
In order to enable the therapeutic bed body to move accurately along the z-axis direction, it is necessary to ensure that the carriage 33a can move accurately along the z-axis direction in the carriage accommodating cavity 34, a static guide rail (not labeled in fig. 5) with an extension direction parallel to the z-axis direction can be disposed in the carriage accommodating cavity 34, a moving guide rail 33c matched with the static guide rail is disposed on the carriage 33a, and 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 action of the cooperation of the static guide rail and the moving guide rail 33 c.
Optionally, the first driving motor 31 may further include a first decelerator 35 and an electromagnetic brake 36. The first end of the first decelerator 35 is connected to one end of the driving rod 32, the second end of the first decelerator 35 is connected to the first driving motor 31, the third end of the first decelerator 35 is connected to the electromagnetic brake 36, and the electromagnetic brake 36 may be coaxially disposed with the driving shaft of the first driving motor 31.
When the first driving motor 31 drives the driving rod 32 to rotate, the first speed reducer 35 can reduce the speed of the driving rod 32 driven by the first speed reducer because the lower the rotation speed is and the larger the torque is under the condition of certain output power, so that the driving rod 32 can obtain larger torque, and the driving rod 32 can drive the support bracket to move in the z-axis direction more easily.
When the movement of the therapeutic bed body needs to be controlled to stop in the z-axis direction during the movement of the therapeutic bed body, the transmission shaft of the first driving motor 31 can be held tightly by the electromagnetic brake 36, so that the driving rod 32 stops rotating, and the therapeutic bed body stops moving in the z-axis direction.
Alternatively, the first drive assembly 30 may further include a position detection device, which may include at least one of an encoder and a sensor.
The first driving assembly 30 may further include a first encoder 37 coaxially disposed with the driving rod 32, a transmission shaft of the first encoder 37 may be coaxially connected with the driving rod 32, and when the driving rod 32 rotates, the transmission shaft of the first encoder 37 rotates, and the first encoder 37 may detect a position of the couch body in the z-axis direction through the number of rotations of the transmission shaft inside the first encoder 37. In the embodiment of the present invention, the first driving assembly 30 may further include a built-in encoder also disposed inside the first driving motor 31, wherein a transmission shaft of the built-in encoder is coaxially connected with the transmission shaft of the first driving motor 31, and the built-in encoder may detect the position of the therapeutic bed body in the z-axis direction through the number of turns of the transmission shaft inside the built-in encoder when the first driving motor 31 works.
In an alternative implementation manner, before the first driving component 30 drives the therapeutic bed body, when the position of the therapeutic bed body in the z-axis direction detected by the first encoder 37 is the same as the position of the therapeutic bed body in the z-axis direction detected by the built-in encoder, the first driving component 30 can only drive the therapeutic bed body, otherwise, the first driving component 30 cannot drive the therapeutic bed body, at this time, the first driving component 30 can generate alarm information for prompting an operator that the position of the therapeutic bed body in the z-axis direction cannot be positioned, so that inaccurate position positioning of the therapeutic bed body in the z-axis direction is effectively avoided.
As shown in fig. 7, fig. 7 is a schematic structural diagram of a second driving assembly according to 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 extension direction of the driving guide bar 42 may be parallel to the x-axis direction.
In the embodiment of the present invention, the setting positions of the driving guide bar 42 and the driving wheel 43 may be different, and the following embodiments are schematically illustrated by taking two exemplary implementations as examples:
In a first exemplary embodiment, the drive bar 42 may be provided on the first drive assembly, for example, the drive bar 42 may be provided on the carriage 33a in the first drive assembly 30 shown in fig. 5. The driving wheel 43 may be disposed on a support bracket, for example, the second driving assembly 40 may further include a support seat 401, the driving wheel 43 may be disposed on a support surface S of the support seat 401, and the support seat 401 may be fixedly connected to the support bracket, thereby implementing the disposition of the driving wheel 43 on the support bracket.
The drive wheel 43 can be connected to the second drive motor 41 and can be movably connected to the drive guide strip 42. The driving wheel 43 is configured to drive the support bracket to move along the driving guide bar 42 in the x-axis direction by the driving of the second driving motor 41.
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 support surface S of the support seat 401, and the support seat 401 may be fixedly connected to the carriage 33a of the first driving assembly 30 as illustrated in fig. 5, thereby implementing the driving wheel 43 disposed on the first driving assembly. The drive guide 42 may be provided on a support bracket.
The driving wheel 43 may be connected to the second driving motor 41 and movably connected to the driving guide bar 42, and the driving guide bar 42 is configured to drive the support frame to move in the x-axis direction when the second driving motor 41 drives the driving wheel 43 to rotate.
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 is meshed with the driving gear, so that the movable connection between the driving guide bar 4 and the driving wheel 43 is realized. It should be noted that, fig. 7 is a schematic illustration taking a manner of transmission between the driving guide bar 42 and the driving wheel 43 as an example, and in another alternative implementation, the manner of transmission between the driving guide bar 42 and the driving wheel 43 may also be a manner of belt transmission, which is not limited in the embodiment of the present invention.
Optionally, the second drive assembly 40 may also include a first clutch 44. The driving wheel 43 and the second driving motor 41 are connected to both ends of the first clutch 44, respectively. By way of example, assuming that the second driving assembly 40 further includes a support seat 401, the driving wheel 43 may be disposed on a support surface S of the support seat 401, and the first clutch 44 may be disposed on a surface opposite to the support surface S of the support seat 401.
In the embodiment of the present invention, when the second driving motor 41 is powered on, the first clutch 44 may be automatically connected to the driving wheel 43 to realize the driving of the second driving motor 41 to the support bracket. When the second drive motor 41 is de-energized, the first clutch 44 may be automatically disconnected from the drive wheel 43. If the radiotherapy apparatus is suddenly powered off during normal operation, the connection between the second driving motor 41 and the driving wheel 43 may be disconnected by the first clutch 44, and at this time, an operator may manually control the movement of the support bracket in the x-axis direction, so that the patient on the couch body may be quickly evacuated.
Optionally, the second driving assembly 40 may further include a second speed reducer 45, where the second speed reducer 45 is located between the second driving motor 41 and the first clutch 44, and the second driving motor 41, the second speed reducer 45, and the first clutch 44 are sequentially connected with the driving wheel 43. The second decelerator 45 allows the driving wheel 43 to obtain a larger torque, thereby driving the support frame to move in the x-axis direction more easily.
Alternatively, the second drive assembly 40 may further include a position detection device, which may include at least one of an encoder and a sensor.
The second driving assembly 40 may include, for example, two second encoders 46 provided on a side of the support 401 opposite to the support surface S. The second driving assembly 40 may further include two position detection wheels 47 in one-to-one correspondence with the two second encoders 46. Each position detection wheel 47 is coaxially connected with the transmission shaft of the corresponding second encoder 46, and both position detection wheels 47 may be gears and mesh with the driving guide bar 42 provided that the driving guide bar 42 may be a driving rack. Each position detecting wheel 47 rotates with it as the driving guide bar 42 moves relative to the driving wheel, and each second encoder 46 can detect the position of the couch body in the x-axis direction by the number of turns of the transmission shaft inside it.
It should be noted that the second encoder 46 may be one, and the number thereof is not limited.
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 does not correctly reflect the position of the couch body in the x-axis direction, so that two second encoders 46 are required to detect the position of the couch body in the x-axis direction. For example, before the second driving assembly 40 drives the therapeutic bed body, when the positions of the therapeutic bed bodies in the x-axis direction detected by the two second encoders 46 are the same, the second driving assembly 40 can only drive the therapeutic bed body, otherwise, the second driving assembly 40 cannot drive the therapeutic bed body, and at this time, the second driving assembly 40 can generate alarm information for prompting an operator that the position of the therapeutic bed body in the x-axis direction cannot be positioned, so that inaccurate position positioning of the therapeutic bed body in the x-axis direction is effectively avoided.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a third driving assembly 50 according to an embodiment of the present invention. The third drive assembly 50 may include a third drive motor 51, a conveyor belt assembly 52, and a couch body coupling 53.
The conveyor belt assembly 52 is connected to a third drive motor 51. The couch body connector 53 is disposed on the conveyor belt assembly 52 and is connected to the couch body. The couch body coupling 53 is configured to move the couch body in the y-axis direction when the third drive motor 51 drives the rotation of the conveyor belt assembly 52.
The belt assembly 52 may include, for example, a belt body 52a, a first timing pulley 52b, a second timing pulley 52c, and a drive pulley 52d. The belt body 52a may be a synchronous belt, a steel belt, or a friction belt. The drive pulley 52d is positioned between the first and second timing pulleys 52b, 52c, and the first, second and drive pulleys 52b, 52c, 52d are each in contact with the conveyor belt body 52a, which conveyor belt body 52a is also fixedly connected to the couch body connection 53. The line connecting the axis of the first pulley 52b and the axis of the second pulley 52c may be parallel to the y-axis direction.
In the embodiment of the present invention, the third driving motor 51 may be connected to the driving belt pulley 52d, where the third driving motor 51 can drive the driving belt pulley 52d to rotate, and a central angle of an arc surface in the driving belt pulley 52d, which is in contact with the conveyor belt body 52a, is greater than or equal to a preset angle, and the preset angle is a minimum central angle at which the driving belt pulley 52d can drive the therapeutic bed body to move. If the third driving motor 51 drives the driving pulley 52d to rotate, when the central angle of the arc surface of the driving pulley 52d, which is in contact with the conveyor belt body 52a, is greater than or equal to a preset angle, the driving pulley 52d can drive the therapeutic bed body to move along the y-axis direction through the conveyor belt body 52 a.
In practical use, the therapeutic bed provided by the embodiment of the invention can move between the first synchronous pulley 52b and the second synchronous pulley 52c under the action of the therapeutic bed body connecting piece 53, and in the embodiment of the invention, the width of the therapeutic bed body connecting piece 53 in the y-axis direction is far smaller than the distance between the first synchronous pulley 52b and the second synchronous pulley 52c, so that the travel of the therapeutic bed body in the y-axis direction is larger.
In order to ensure that the central angle of the circular arc surface of the driving pulley 52d that contacts the belt body 52a is greater than or equal to the preset angle, two exemplary implementations are provided below:
In the first illustrative implementation, it is necessary to provide the drive pulley 52d below the first and second timing pulleys 52b and 52c, and to ensure that the drive pulley 52d is spaced from the first timing pulley 52b in the z-axis direction. By way of example, as shown in fig. 9, fig. 9 is a side view of another third drive assembly provided in an embodiment of the present invention. The belt body 52a can be enclosed in an inverted triangle-like shape by the drive pulley 52d, the first timing pulley 52b, and the second timing pulley 52 c. The minimum distance between the driving pulley 52d and the first timing pulley 52b in the z-axis direction can be calculated from the distance between the first timing pulley 52b and the second timing pulley 52c, and the magnitude of the preset angle. When the drive pulley 52d and the first timing pulley 52b are greater than or equal to the minimum distance in the z-axis direction, it is possible to ensure that the central angle of the circular arc surface of the drive pulley 52d that contacts the belt body 52a is greater than or equal to the preset angle.
In a second illustrative implementation, as shown in FIG. 8, the conveyor belt assembly 52 may further include at least one idler pulley, each idler pulley positioned between the first and second timing pulleys 52b, 52c, each idler pulley abutting the conveyor belt body 52 a. The at least one idler includes, for example, a first idler 52e and a second idler 52f on either side of a drive pulley 52d, as shown in fig. 10, with fig. 10 being a side view of the third drive assembly shown in fig. 8. By the first idler pulley 52e and the second idler pulley 52f being located on both sides of the drive pulley 52d, the central angle of the circular arc surface in the drive pulley 52d that is in contact with the belt body 52a can be increased to be greater than or equal to the preset angle. And by the first idler pulley 52e and the second idler pulley 52f, the distance between the drive pulley 52d and the first synchronizing pulley in the z-axis direction can be reduced, effectively reducing the space occupied by the third drive assembly 50 in the treatment couch.
Alternatively, as shown in fig. 8, the third driving assembly 50 may further include a second clutch 54, and a third driving motor 51 and a conveyor belt assembly 52 are connected to both ends of the second clutch 54, respectively. The third driving assembly 50 may further include a third decelerator 55, the third decelerator 55 being located between the third driving motor 51 and the second clutch 54, and the third driving motor 51, the third decelerator 55, and the second clutch 54 being sequentially connected with the driving pulley 52d in the conveyor belt assembly 52. The third decelerator 55 allows the driving pulley 52d to obtain a larger torque, thereby driving the couch body to move in the y-axis direction more easily.
In the embodiment of the present invention, when the third driving motor 51 is powered on, the second clutch 54 may be automatically connected to the driving pulley 52d, so as to realize the driving of the therapeutic bed body by the third driving motor 51. When the third drive motor 51 is de-energized, the second clutch 54 may be automatically disconnected from the drive pulley 52 d. If the radiotherapy apparatus is suddenly powered off during normal operation, the connection between the third driving motor 51 and the driving pulley 52d may be disconnected by the second clutch 54, and at this time, the operator may manually control the movement of the couch body in the y-axis direction, so that the patient on the couch body may be rapidly evacuated.
Optionally, the third drive assembly 50 may further include a position detection device, which may include at least one of an encoder and a sensor.
As illustrated in fig. 8, the third driving assembly 50 may further include two third encoders 56, a transmission shaft of one of the two third encoders 56 being coaxially connected to the first timing pulley 52b, and a transmission shaft of the other third encoder being coaxially connected to the second timing pulley 52 c. Each third encoder 56 can detect the position of the couch body in the y-axis direction by the number of turns of the transmission shaft inside thereof.
Here, the third encoder 56 may be one, and the number thereof is not limited.
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 does not correctly reflect the position of the couch body in the y-axis direction, and thus two third encoders 56 are required to detect the position of the couch body in the y-axis direction. For example, before the third driving assembly 50 drives the therapeutic bed body, when the positions of the therapeutic bed bodies in the y-axis direction detected by the two third encoders 56 are the same, the third driving assembly 50 can only drive the therapeutic bed body, otherwise, the third driving assembly 50 cannot drive the therapeutic bed body, and at this time, the third driving assembly 50 can generate alarm information for prompting an operator that the positions of the therapeutic bed bodies in the y-axis direction cannot be positioned, so that inaccurate positioning of the therapeutic bed body in the y-axis direction is effectively avoided.
Optionally, referring to fig. 11, fig. 11 is a schematic structural diagram of another therapeutic bed according to an embodiment of the present invention. Each drive assembly may also include a drive controller, each of which is integrated on the support bracket 10 a. By way of 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.
The driving controller in each driving assembly is respectively and electrically connected with the driving motor and the encoder in the driving assembly, the encoder can send the detected position information of the therapeutic bed body 20 to the driving controller, and the driving controller controls the driving motor based on the position information of the therapeutic bed body 20 so as to realize accurate movement of the therapeutic bed body 20. For example, with respect to the third driving assembly 50, the third driving controller 50a in the third driving assembly 50 is electrically connected to a third driving motor and two third encoders capable of detecting positional information of the couch body in the y-axis direction, respectively, and the third driving controller 50a controls the third driving motor based on the positional information of the couch body 20 in the y-axis direction to achieve accurate movement of the couch body 20 in the y-axis direction.
In the embodiment of the invention, a control cabinet system for controlling the movement of the therapeutic bed body in the related technology can be replaced by three distributed driving controllers which can be integrated on the support bracket 10a, so that the occupied space of the radiotherapy equipment is effectively reduced. And each driving controller can be arranged at a position which is closer to the corresponding driving motor and encoder, so that the cable length of connection between the driving controller and the driving motor and between the driving controller and the encoder is effectively shortened.
Optionally, as shown in FIG. 11, the treatment couch 100 may further include a drag chain 70. The drag chain 70 is internally provided with the cable in the treatment couch 100, and the cable in the treatment couch 100 can be protected through the drag chain 70, so that the cable in the treatment couch 100 is prevented from being damaged in the moving process of the treatment couch body 20.
In summary, the therapeutic bed provided by the embodiment of the invention comprises a support bracket, a base body and a therapeutic bed body. One end of the support bracket is connected with the base body, and the support bracket supports the treatment bed body. Through the setting of treatment bed body on the support frame, the one end and the base body fixed connection of support frame, the base body is connected with the rigid support portion of radiotherapy equipment, like this, can be under the less circumstances of base body and ground non-contact or area of contact, guarantee that the area of contact between treatment bed body and the support frame is great for the base body can effectually play the supporting role to the treatment bed body, effectually reduced the area of treatment bed. And, the base body in this treatment couch can be directly with the rigid support portion fixed connection in the radiotherapy equipment, further reduced the area of radiotherapy equipment for this radiotherapy equipment can use in the less room of area. When the base body in the treatment couch is directly fixedly connected with the rigid supporting part in the radiotherapy equipment, the distance between the treatment couch body and the treatment head arranged in the radiotherapy equipment is relatively short, so that the treatment couch can rapidly realize the superposition of the target area of a patient on the treatment couch and the isocenter focus of the treatment head, and the treatment efficiency of the radiotherapy equipment is effectively improved.
Embodiments of the present invention also provide a radiotherapy apparatus, as shown in fig. 12, which may comprise a treatment couch 100 and a rigid support 200. The treatment couch 100 may be the treatment couch 100 shown in fig. 2,3, 4 or 11. The rigid support 200 is connected to the base body 10b of the couch 100.
The rigid support 200 may be a base of a drum-type rotating frame or a support of a stationary frame. When the rigid support 200 is a 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 is not in contact with the ground, but of course, the base may extend below the treatment couch, and at this time, the base may be connected to the lower bottom 10b1 of the base body 10b, or the base may be connected to both the side 10b2 and the lower bottom 10b1 of the base body 10b, so that the area of the base body 10b in contact with the ground (extended base) is small compared to the related art.
The radiotherapy apparatus may further comprise a roller 300 on the base. The base body 10b in the treatment couch 100 can be fixedly connected with the rigid support part 200, the occupied area of the radiotherapy equipment is effectively reduced, the radiotherapy equipment can be used in a room with a smaller area, the distance between the treatment couch body 20 and the treatment head arranged on the roller 300 in the treatment couch 100 is relatively close, the target region of a patient on the treatment couch 100 can be rapidly realized by the treatment couch 100, and the isocenter focus of the treatment head coincides, so that the treatment efficiency of the radiotherapy equipment is effectively improved.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention, but is intended to cover all modifications, equivalents, alternatives, and improvements falling within the spirit and principles of the invention.
Claims (8)
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| WO2022057085A1 (en) * | 2020-09-15 | 2022-03-24 | 苏州雷泰医疗科技有限公司 | Treatment bed revolution structure and accelerator treatment bed |
| CN116271575A (en) * | 2023-03-24 | 2023-06-23 | 北京唯迈医疗设备有限公司 | A single-column six-dimensional bed for carrying medical patients |
| CN116196564A (en) * | 2023-03-24 | 2023-06-02 | 北京唯迈医疗设备有限公司 | A double-column six-dimensional bed for carrying medical patients |
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| JP2008246012A (en) * | 2007-03-30 | 2008-10-16 | Toshiba Corp | Medical bed and imaging device |
| CN107854779A (en) * | 2017-11-22 | 2018-03-30 | 中国科学院上海应用物理研究所 | A kind of radiotherapy robot therapeutic bed of SCARA structures |
| CN209630458U (en) * | 2018-11-30 | 2019-11-15 | 深圳市奥沃医学新技术发展有限公司 | Treatment bed and radiotherapy equipment |
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| JP5670317B2 (en) * | 2009-04-22 | 2015-02-18 | 株式会社日立メディコ | Sleeper for medical imaging device |
| CN102440795B (en) * | 2010-10-11 | 2014-09-03 | 宋世鹏 | Radiotherapy system |
| CN204522032U (en) * | 2015-03-16 | 2015-08-05 | 瑞地玛医学科技有限公司 | Straight line swing arm robot therapeutic bed |
| JP6947373B2 (en) * | 2016-07-08 | 2021-10-13 | 学校法人北里研究所 | Radiation therapy device and its operation method |
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| JP2008246012A (en) * | 2007-03-30 | 2008-10-16 | Toshiba Corp | Medical bed and imaging device |
| CN107854779A (en) * | 2017-11-22 | 2018-03-30 | 中国科学院上海应用物理研究所 | A kind of radiotherapy robot therapeutic bed of SCARA structures |
| CN209630458U (en) * | 2018-11-30 | 2019-11-15 | 深圳市奥沃医学新技术发展有限公司 | Treatment bed and radiotherapy equipment |
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