CN115721877A - Three-dimensional suspension type patient supporting device for nuclear magnetic guidance accelerator system - Google Patents
Three-dimensional suspension type patient supporting device for nuclear magnetic guidance accelerator system Download PDFInfo
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- CN115721877A CN115721877A CN202211406765.6A CN202211406765A CN115721877A CN 115721877 A CN115721877 A CN 115721877A CN 202211406765 A CN202211406765 A CN 202211406765A CN 115721877 A CN115721877 A CN 115721877A
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Abstract
The invention belongs to the technical field of radiotherapy and nuclear magnetic imaging equipment, and particularly relates to a three-dimensional suspension type patient supporting device for a nuclear magnetic guiding accelerator system, which comprises an X-axis driving assembly 100, a Y-axis driving assembly 200, a Z-axis driving assembly 300, an air flotation supporting assembly 400, a bed panel assembly 500, a treatment bed base 600, a moving base a700, a moving base b800 and an air flotation base 900. The X-axis driving assembly 100 is arranged on the base 600 of the treatment bed, the Z-axis driving assembly 300 is fixed on the movable base a700, and the Y-axis driving assembly 200 is fixed on the movable base b 800; the air floating support assembly 400 is supported by the air floating base 900, one end of the deck assembly 500 is installed on the moving base b800, and the other end is installed on the air floating support assembly 400. The three-dimensional motion treatment bed realizes a large motion range, only uses one set of driving system and control system, has higher synchronous response speed, and can be applied in a high magnetic field environment.
Description
Technical Field
The invention belongs to the technical field of radiotherapy and nuclear magnetic imaging equipment, and particularly relates to a three-dimensional suspension type patient supporting device for a nuclear magnetic guidance accelerator system.
Background
A nuclear magnetic guidance accelerator is a large medical device that guides and loads magnetic resonance images into a radiation therapy system. The mainstream nuclear magnetic guiding accelerator in the market is characterized in that the beam axis of the accelerator is vertical to the axis of a magnetic resonance magnet. The patient support device used in the system needs to be compatible with the traditional X-ray radiotherapy application environment and the strong magnetic field application environment. The nuclear magnetic accelerator treatment bed on the market at present is designed and manufactured based on magnetic resonance imaging equipment, can only lift (Z direction) and move along the axial direction of an equipment hole (Y direction), and can only move in one dimension in the equipment treatment hole, but when a patient has tumor deviation or the tumor is positioned in a side field position of a body, the treatment can only be realized by changing a treatment plan, so that the treatment time of the patient needs to be prolonged by at least 20-30 minutes, the pain and claustrophobic feeling of the patient are greatly increased (the diameter of a general nuclear magnetic hole is only 65 mm), and the target deviation which cannot be solved by changing the treatment plan is avoided, so that the nuclear magnetic accelerator cannot be applied, the traditional accelerator needs to be replaced for treatment, and the application scene of the nuclear magnetic accelerator is greatly weakened.
At present, in the prior art, only one small-stroke three-dimensional treatment bed (the X-direction movement is only +/-7 mm) which runs in a low-magnetic-field 0.35T environment is provided, and each movement axis (X axis, Y axis and Z axis) can drive a patient to make a positioning correction by synchronous driving of two sets of driving systems and control systems, so that the adjustment range is small, and the operation and the use are inconvenient.
It is therefore desirable to provide a three-dimensional suspension patient support device for a nuclear magnetic guided accelerator system that addresses the deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a three-dimensional suspension type patient supporting device for a nuclear magnetic guiding accelerator system, which realizes a large movement range, only uses one set of (X-axis and Y-axis) driving system and control system, has higher synchronous response speed and can be applied to a three-dimensional movement treatment bed (not less than 1.5T) in a high magnetic field environment.
The technical scheme for realizing the purpose of the invention is as follows:
a three-dimensional suspension type patient supporting device for a nuclear magnetic guidance accelerator system comprises an X-axis driving assembly, a Y-axis driving assembly, a Z-axis driving assembly, an air floatation supporting assembly, a bed panel assembly, a treatment bed base, a moving base a, a moving base b and an air floatation base;
wherein the treatment bed base, the movable base a and the movable base b are sequentially connected from bottom to top; the X-axis driving component is arranged on the base of the treatment bed, the Z-axis driving component is fixed on the movable base a, and the Y-axis driving component is fixed on the movable base b; the air floatation supporting component is supported by the air floatation base, one end of the bed panel component is installed on the movable base b, and the other end of the bed panel component is installed on the air floatation supporting component.
The X-axis driving assembly comprises a driving assembly X, a brake X, a transmission assembly X and a guide rail a, wherein the brake X is installed at the tail end of an output shaft of the driving assembly X and is connected with the driving assembly X in series, a transmission shaft at the tail end of the driving assembly X is connected with the transmission assembly X through a synchronous belt, so that the driving assembly X is parallel to the movement axis of the transmission assembly X, a screw rod supporting seat and a guide rail seat in the transmission assembly X and the guide rail a are installed on a base of the treatment bed, and a transmission screw nut and a guide rail sliding block which are meshed with a screw rod in the driving assembly X and the guide rail a are installed on a movable base a.
When the screw rod in the driving assembly X rotates, the moving base a is driven to move in the X-axis direction.
The transmission assembly X is composed of a screw rod and a nut or a gear rack, wherein the screw rod or the gear is a main motion part, the nut or the gear rack is a passive motion part, the nut or the gear rack in the transmission assembly X is fixed on a movable base a, and the movable base a is supported by a guide rail a and limited to move in the X-axis direction.
The Z-axis driving assembly comprises a driving assembly Z, a brake Z, a transmission assembly Z and a guide rail b, the brake Z is connected to the tail end of an output shaft of the driving assembly Z and is connected with the driving assembly Z in series, the output shaft at the tail end of the driving assembly Z is vertically connected with the transmission assembly Z through a worm gear reducer, the direction of the output shaft is converted into the Z direction, a motor base, a speed reducer base and a lead screw supporting base in the driving assembly Z, the brake Z, the transmission assembly Z and the guide rail b are installed on a movable base a, and a transmission screw and a guide rail slider in the driving assembly Z, the brake Z, the transmission assembly Z and the guide rail b are installed on the movable base b.
The movable base b is supported by the guide rail b, and when a screw rod in the driving assembly Z rotates, the movable base b is driven to move in the Z-axis direction.
The transmission assembly Z consists of a screw rod and a screw nut or a gear rack, wherein the screw rod or the gear is a main moving part, and the screw nut and the gear rack are passive moving parts.
The Y-axis driving assembly consists of a driving assembly Y, a brake Y, a transmission assembly Z, a guide roller a and a guide roller b, the driving assembly Y and the brake Y are connected in series and fixed on a movable base b, the driving assembly Y is connected with a driving gear in the transmission assembly Z through a synchronous belt, the driving gear in the transmission assembly Z is meshed with a rack, and the rack is fixed on the bed panel assembly; the guide rollers a and b are fixed on the movable base b and respectively restrict the bed panel assembly from moving linearly along the Y direction from the X direction and the Z direction.
When a synchronous pulley in the Y-axis driving assembly drives a gear to rotate, the matched rack moves linearly to drive the bed panel assembly to move in the Y direction.
The air floatation support assembly consists of an air floatation cushion, an air floatation upright post, a lifting upright post, a bed panel interface, a reset mechanical interface and a universal rolling bearing; the air floatation cushion is coupled with the air floatation stand column through a universal ball joint, the air floatation stand column is sleeved in the lifting stand column, a transmission structure arranged in the air floatation stand column pushes the lifting stand column to do lifting motion, the bed panel interface and the universal rolling bearing are fixedly arranged on the upper portion of the lifting stand column, the bed panel assembly is arranged on the upper portion of the bed panel interface and the upper portion of the universal rolling bearing, the reset mechanical interface is arranged on the inner side surface of the lifting stand column, and the air floatation cushion is located on the air floatation base.
The bed panel assembly is restrained by a guide roller a and a guide roller b to move in the Y-axis direction.
When the air floating cushion is not filled with air, the air floating cushion and the air floating base are kept static; after compressed air is introduced, a layer of air film is formed between the air floating cushion and the air floating base, the whole air floating supporting assembly can be floated, the friction force is extremely low, and the friction factor is 0.0005.
The bed panel interface is used for abutting the bed panel component and the air floatation supporting component and limiting the bed panel component to move in the X, Y, Z axis direction without falling off.
The reset mechanical interface is used for positioning the air floatation supporting assembly and the main equipment, and ensures that the air floatation supporting assembly can return to the initial position when the equipment is operated at the end.
The universal rolling bearing is an XY plane formed by rolling bodies such as universal bearings, and when the bed panel component is in butt joint and guided in, the rolling friction force is reduced; in addition, when the load is light, when the bed panel assembly moves in the X-axis direction, the air floatation supporting assembly does not need to float, the bed panel assembly is directly overlapped on a plane formed by the universal rolling bearing, and the bed panel assembly can do following movement in the X-axis direction and the Y-axis direction without being connected with the bed panel interface.
The beneficial technical effects of the invention are as follows:
(1) The invention supports the position adjustment of 3 dimensions of the patient in the equipment hole, can meet the offset correction of the target area position by moving the treatment bed, greatly shortens the stay time of the patient on the equipment and relieves the pain of the patient;
(2) Through the structural design and the design of the ceramic ball bearing, the invention can be applied to a nuclear magnetic guiding accelerator system with high magnetic field intensity, and the product applicability is improved;
(3) The synchronous following movement is realized only through a group of X, Y driving and controlling structures and an air floatation supporting structure, so that the cost and the control difficulty are reduced, and the mutual influence on the magnetic field environment is reduced;
(4) The invention has simple structure, high reliability and extremely low cost.
Drawings
FIG. 1 is a schematic view of a three-dimensional suspension patient support device for a nuclear magnetic guided accelerator system according to the present invention;
FIG. 2 is an enlarged view of the X-axis drive assembly of a three-dimensional suspended patient support for a nuclear magnetic guided accelerator system according to the present invention;
FIG. 3 is an enlarged view of a Y-axis drive assembly of a three-dimensional suspension patient support for a nuclear magnetic guided accelerator system according to the present invention;
FIG. 4 is an enlarged view of the three-dimensional floating patient support assembly of the NMR accelerator system of the present invention;
wherein: a 100-X axis drive assembly; a 200-Y axis drive assembly; a 300-Z axis drive assembly; 400-an air floating support assembly; 500-bed panel assembly; 600-a therapeutic bed base; 700-moving base a; 800-moving base b; 900-air floating base; 101-a drive assembly X; 102-brake X; 103-transmission assembly X; 104-guide rail a; 201-drive assembly Y; 202-brake Y; 203-transmission assembly Y; 204-guide roller a; 205-guide roller b; 301-drive assembly Z; 302-brake Z; 303-transmission assembly Z; 304-guide rail b; 401-air cushion; 402-air floating columns; 403-lifting upright posts; 404-bed panel interface; 405-a reset interface; 406-universal rolling bearing.
Detailed Description
In order to make those skilled in the art better understand the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. It should be apparent that the embodiments described below are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without inventive step, are within the scope of the present invention.
As shown in fig. 1, the three-dimensional suspension type patient support device for a nuclear magnetic induction accelerator system according to the present invention includes an X-axis driving assembly 100, a Y-axis driving assembly 200, a Z-axis driving assembly 300, an air floating support assembly 400, a tabletop plate assembly 500, a treatment couch base 600, a moving base a700, a moving base b800, and an air floating base 900.
Wherein the treatment bed base 600, the movable base a700 and the movable base b800 are connected in sequence from bottom to top; the X-axis driving assembly 100 is arranged on the base 600 of the treatment bed, the Z-axis driving assembly 300 is fixed on the movable base a700, and the Y-axis driving assembly 200 is fixed on the movable base b 800; the air floating support assembly 400 is supported by the air floating base 900, one end of the deck assembly 500 is installed on the moving base b800, and the other end is installed on the air floating support assembly 400.
As shown in fig. 2, the X-axis driving assembly 100 includes a driving assembly X101, a brake X102, a transmission assembly X103, and a guide rail a104, wherein the brake X102 is installed at the end of the output shaft of the driving assembly X101 and is connected in series with the driving assembly X101, a transmission shaft at the end of the driving assembly X101 is connected with the transmission assembly X103 through a synchronous belt, so that the driving assembly X101 is parallel to the movement axis of the transmission assembly X103, a lead screw supporting seat and a guide rail seat in the transmission assembly X103 and the guide rail a104 are installed on the treatment bed base 600, and a transmission screw nut and a guide rail slider in the driving assembly X101 and the guide rail a104, which are engaged with the lead screw, are installed on the moving base a 700. When the screw rod in the driving assembly X101 rotates, the matched screw nut can move linearly, driving the moving base a700 to move in the X-axis direction. A nut or a rack in the transmission assembly X103 is fixed to the moving base a700, and the moving base a700 is supported by the guide rail a104 and restricts the movement in the X-axis direction.
The transmission assembly X103 is composed of a screw rod and a nut or a gear rack, wherein the screw rod or the gear is a main moving part, and the nut and the rack are static parts or passive moving parts.
The Z-axis driving assembly 300 comprises a driving assembly Z301, a brake Z302, a transmission assembly Z303 and a guide rail b304, wherein the brake Z302 is connected to the tail end of an output shaft of the driving assembly Z301 and is connected with the driving assembly Z301 in series, the output shaft of the tail end of the driving assembly Z301 is vertically connected with the transmission assembly Z303 through a worm gear reducer, and the direction of the output shaft is converted into the Z direction. The driving assembly Z301, the brake Z302, the transmission assembly Z303 and the motor base, the speed reducer base and the lead screw supporting seat in the guide rail b304 are installed on the movable base a700, the driving screw nut and the guide rail slider which are meshed with the lead screw in the driving assembly Z301, the brake Z302, the transmission assembly Z303 and the guide rail b304 are installed on the treatment bed base b800, the movable base b800 is supported by the guide rail b304, and when the lead screw in the driving assembly Z301 rotates, the matched screw nut can move linearly to drive the treatment bed base b800 to move in the Z-axis direction.
The transmission assembly Z303 is composed of a screw rod and a nut or a gear rack, wherein the screw rod or the gear is a main moving part, and the nut and the rack are static parts or passive moving parts.
As shown in fig. 3, the Y-axis driving assembly 200 is composed of a driving assembly Y201, a brake Y202, a transmission assembly Z203, a guide roller a204 and a guide roller b205, the driving assembly Y201 and the brake Y202 are connected in series and fixed on a mobile base b800, a driving gear in the transmission assembly Z203 is connected through a synchronous belt, the driving gear in the transmission assembly Z203 is engaged with a rack, and the rack is fixed on a deck assembly 500. The guide rollers a204 and b205 are fixed on the movable base b800, and respectively constrain the bed panel assembly 500 from the X direction and the Z direction to move linearly along the Y direction. When the synchronous pulley in the Y-axis driving assembly 200 drives the gear to rotate, the matched rack can move linearly, thereby driving the bed panel assembly 500 to move in the Y direction.
As shown in FIG. 4, the air bearing assembly 400 is composed of an air bearing pad 401, an air bearing column 402, a lifting column 403, a bed panel interface 404, a reset mechanical interface 405, and a universal rolling bearing 406. The air floating cushion 401 is coupled with the air floating upright post 402 through a universal ball joint, the air floating upright post 402 is sleeved in the lifting upright post 403, a transmission structure arranged in the air floating upright post 402 pushes the lifting upright post 403 to do lifting motion, the bed panel interface 404 and the universal rolling bearing 406 are fixedly arranged on the upper portion of the lifting upright post 403, the bed panel assembly 500 is arranged on the upper portions of the bed panel interface 404 and the universal rolling bearing 406, the reset mechanical interface 405 is arranged on the inner side face of the lifting upright post 403, and the air floating cushion 401 is located on the air floating base 900.
The bed panel assembly 500 is restrained by the guide roller a204 and the guide roller b205 from moving in the Y-axis direction
When the air bearing pad 401 is not inflated, the air bearing pad 401 and the air bearing base 900 remain stationary due to the greater friction caused by gravity. When compressed air is introduced, a film is formed between the air bearing pad 401 and the air bearing base 900, and the entire air bearing assembly 400 is lifted and has a very low friction (friction factor of about 0.0005).
The bed panel interface 404 is used to ensure that the bed panel assembly 500 is butted with the air floating support assembly 400 and will not fall off when moving in the X, Y, Z axis direction.
When the deck plate assembly 500 is pulled away, the air flotation support assembly 400 can be released in time.
The reset mechanical interface 405 is used for positioning the air supporting assembly 400 and the main device, and ensures that the air supporting assembly 400 can return to the initial position after the device is operated.
The universal rolling bearing 406 is an XY plane formed by rolling elements such as a universal bearing, and has two purposes, one is to reduce the force applied by the operator because the rolling friction is small when the deck assembly 500 is inserted into the docking station. On the other hand, in order to realize another working mode of the treatment couch, that is, when the load is light, the couch top plate assembly 500 moves in the X-axis direction, and the couch top plate assembly 500 does not break due to damage caused by rolling friction, the air-floating support assembly 400 does not need to float, the couch top plate assembly 500 is directly lapped on the plane formed by the universal rolling bearings 406, and at this time, the couch top plate assembly 500 does not connect with the couch top plate interface 404, and can perform following movement in the X-axis direction and the Y-axis direction.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (15)
1. A three-dimensional floated patient support device for nuclear magnetic guidance accelerator system which characterized in that: the device comprises an X-axis driving component (100), a Y-axis driving component (200), a Z-axis driving component (300), an air floatation supporting component (400), a bed panel component (500), a treatment bed base (600), a movable base a (700), a movable base b (800) and an air floatation base (900);
wherein the treatment bed base (600), the movable base a (700) and the movable base b (800) are connected in sequence from bottom to top; the X-axis driving component (100) is arranged on a base (600) of the treatment bed, the Z-axis driving component (300) is fixed on a movable base a (700), and the Y-axis driving component (200) is fixed on a movable base b (800); the air floating supporting assembly (400) is supported by an air floating base (900), one end of the bed panel assembly (500) is arranged on the movable base b (800), and the other end is arranged on the air floating supporting assembly (400).
2. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 1, wherein: the X-axis driving assembly (100) comprises a driving assembly X (101), a brake X (102), a transmission assembly X (103) and a guide rail a (104), wherein the brake X (102) is installed at the tail end of an output shaft of the driving assembly X (101) and is connected with the driving assembly X (101) in series, a transmission shaft at the tail end of the driving assembly X (101) is connected with the transmission assembly X (103) through a synchronous belt, so that the driving assembly X (101) is parallel to the movement axis of the transmission assembly X (103), a screw rod supporting seat and a guide rail seat in the transmission assembly X (103) and the guide rail a (104) are installed on a treatment bed base (600), and a transmission screw nut and a guide rail sliding block which are meshed with a screw rod in the driving assembly X (101) and the guide rail a (104) are installed on the movable base a (700).
3. The three-dimensional, floating patient support device for a nuclear magnetic guided accelerator system of claim 2, wherein: when the screw rod in the driving assembly X (101) rotates, the moving base a (700) is driven to move in the X-axis direction.
4. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 3, wherein: the transmission assembly X (103) is composed of a screw rod and a nut or a gear rack, wherein the screw rod or the gear is a main motion part, the nut or the gear rack is a passive motion part, the nut or the gear rack in the transmission assembly X (103) is fixed on a movable base a (700), and the movable base a (700) is supported by a guide rail a (104) and limited to move in the X-axis direction.
5. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 4, wherein: the Z-axis driving assembly (300) comprises a driving assembly Z (301), a brake Z (302), a transmission assembly Z (303) and a guide rail b (304), the brake Z (302) is connected to the tail end of an output shaft of the driving assembly Z (301) and is connected with the driving assembly Z (301) in series, the output shaft of the tail end of the driving assembly Z (301) is vertically connected with the transmission assembly Z (303) through a worm reducer, the direction of the output shaft is converted into the Z direction, a motor base, a speed reducer base and a screw rod support base in the driving assembly Z (301), the brake Z (302), the transmission assembly Z (303) and the guide rail b (304) are installed on a movable base a (700), and a transmission screw nut and a guide rail sliding block in the driving assembly Z (301), the brake Z (302), the transmission assembly Z (303) and the guide rail b (304) are installed on the movable base b (800).
6. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 5, wherein: the moving base b (800) is supported by the guide rail b (304), and when a screw rod in the driving assembly Z (301) rotates, the screw rod drives the moving base b (800) to move in the Z-axis direction.
7. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 6, wherein: the transmission assembly Z (303) is composed of a screw rod and a screw nut or a gear rack, wherein the screw rod or the gear is a main moving part, and the screw nut and the gear rack are driven moving parts.
8. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 7, wherein: the Y-axis driving assembly (200) is composed of a driving assembly Y (201), a brake Y (202), a transmission assembly Z (203), a guide roller a (204) and a guide roller b (205), the driving assembly Y (201) and the brake Y (202) are connected in series and fixed on a movable base b (800), the driving assembly Y (201) is connected with a driving gear in the transmission assembly Z (203) through a synchronous belt, a driving gear in the transmission assembly Z (203) is meshed with a rack, and the rack is fixed on a bed panel assembly (500); the guide roller a (204) and the guide roller b (205) are fixed on a movable base b (800) and respectively restrict the bed panel assembly (500) from moving linearly along the Y direction from the X direction and the Z direction.
9. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 8, wherein: when a synchronous pulley in the Y-axis driving assembly (200) drives a gear to rotate, the matched rack moves linearly to drive the bed panel assembly (500) to move in the Y direction.
10. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 9, wherein: the air floatation support assembly (400) consists of an air floatation cushion (401), an air floatation upright post (402), a lifting upright post (403), a bed panel interface (404), a reset mechanical interface (405) and a universal rolling bearing (406); the air floating cushion (401) is coupled with an air floating upright post (402) through a universal ball joint, the air floating upright post (402) is sleeved in a lifting upright post (403), a transmission structure arranged in the air floating upright post (402) pushes the lifting upright post (403) to move up and down, a bed panel interface (404) and a universal rolling bearing (406) are fixedly arranged on the upper portion of the lifting upright post (403), a bed panel assembly (500) is arranged on the upper portions of the bed panel interface (404) and the universal rolling bearing (406), a reset mechanical interface (405) is arranged on the inner side surface of the lifting upright post (403), and the air floating cushion (401) is located on an air floating base (900).
11. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 10, wherein: the bed panel assembly (500) is restrained by a guide roller a (204) and a guide roller b (205) to move in the Y-axis direction.
12. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 11, wherein: when the air floating pad (401) is not filled with air, the air floating pad (401) and the air floating base (900) are kept static; when compressed air is introduced, an air film is formed between the air flotation cushion (401) and the air flotation base (900), the whole air flotation supporting assembly (400) can be floated, the friction force is extremely low, and the friction factor is 0.0005.
13. The three-dimensional, floating patient support device for a nmr accelerator system of claim 12, wherein: the bed panel interface (404) is used for abutting against the bed panel component (500) and the air-floating support component (400), and can not fall off when the bed panel component (500) is limited to move in the X, Y, Z axial direction.
14. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 13, wherein: the reset mechanical interface (405) is used for positioning the air floatation support assembly (400) and the main equipment, and ensures that the air floatation support assembly (400) can return to the initial position when the equipment is operated.
15. The three-dimensional, suspended patient support device for a nuclear magnetic guided accelerator system of claim 14, wherein: the universal rolling bearing (406) is an XY plane formed by rolling bodies such as a universal bearing, and when the bed panel component (500) is in butt joint and is led in, rolling friction force is reduced; in addition, when the load is light, when the bed panel assembly (500) moves in the X-axis direction, the air floatation support assembly (400) does not need to float, the bed panel assembly (500) is directly overlapped on a plane formed by the universal rolling bearing (406), and the bed panel assembly (500) can do following movement in the X-axis direction and the Y-axis direction without being connected with the bed panel interface (404).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211406765.6A CN115721877A (en) | 2022-11-10 | 2022-11-10 | Three-dimensional suspension type patient supporting device for nuclear magnetic guidance accelerator system |
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| CN202211406765.6A CN115721877A (en) | 2022-11-10 | 2022-11-10 | Three-dimensional suspension type patient supporting device for nuclear magnetic guidance accelerator system |
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| CN115721877A true CN115721877A (en) | 2023-03-03 |
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| CN202211406765.6A Pending CN115721877A (en) | 2022-11-10 | 2022-11-10 | Three-dimensional suspension type patient supporting device for nuclear magnetic guidance accelerator system |
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