A kind of accurately pendulum position therapeutic bed
Technical field
The invention belongs to medical diagnosis therapeutic device field, particularly relate to one and can realize accurately putting a therapeutic bed.
Background technology
Radiotherapy medical science is use radiation and destroys ill tissue.In radiation therapy process, need patient is precisely located, it is ensured that body region to be illuminated, tumor the most to be illuminated are exposed to sufficiently high radiation dose, the most as small as possible the health tissues of patient harm.
During radiotherapy, patient typically lies on therapeutic bed, therapeutic bed the focus of patient is delivered to the irradiation center of the radiotherapy treatment planning that doctor makes.The most coplanar irradiation or noncoplanar irradiation, be required for ensureing that the focus of patient is constantly in irradiation center, could implement radiotherapy, otherwise can produce the most serious Operative risk.During actual therapeutic, for a long time treatment causes patient not accommodate conflict producing mobile happening occasionally, thus causes irradiation center to deviate treatment plan, during readjusting, extends irradiation time, brings misery to patient.Meanwhile, being limited to the rotation angle that therapeutic bed can be provided by, a lot of complicated focuses are difficult to avoid jeopardizing organ and find the radiation path of optimum, have impact on therapeutic effect.How to promote radiocurable efficiency and quality, reduce the radiocurable time, alleviate patient's physiology and psychological burden is to need problems faced in therapeutic bed upgrading.
Patent 201420606155.5 discloses a kind of six-freedom parallel radiation therapeutical bed, the control of each angle and position can be realized, but this therapeutic bed is owing to needing relatively large space between upper plate and the base of its parallel institution, whole therapeutic bed occupation area of equipment is caused to increase.
Summary of the invention
The defect existed in view of above-mentioned prior art, the purpose of the present invention is to propose to the therapeutic bed of a kind of accurate pendulum position, it is possible to the angle of regulation bed is with accurate treatment focus.
The purpose of the present invention will be achieved by the following technical programs:
A kind of accurate pendulum position therapeutic bed, including pendulum bit platform, substrate, is provided with multiple freedom parallel mechanism between described pendulum bit platform and described substrate, be also disposed with horizontal movement and control assembly and vertically movable control assembly below described substrate;
Described horizontal movement controls assembly and includes that first direction controls assembly and second direction controls assembly, described first direction and second direction are vertical in horizontal plane, the motion of described first direction and second direction is horizontal movement, described first direction controls assembly and all includes the moving parts below a platform and setting and described platform with second direction control assembly, described moving parts all includes travelling nut and the roller bearing screw mandrel being arranged in travelling nut, one end of described roller bearing screw mandrel is provided with motor, described motor drives roller bearing screw mandrel to rotate, travelling nut is made to drive described platform to carry out horizontal movement at the axis direction of corresponding roller bearing screw mandrel;The axis that described first direction control assembly and second direction control the roller bearing screw mandrel in assembly is mutually perpendicular to;
The described vertically movable assembly that controls includes the 3rd platform, pedestal, and it is connected to the lifter between the 3rd platform and pedestal, described horizontal movement controls assembly and is placed on the 3rd platform, and the described vertically movable assembly that controls drives described horizontal movement control assembly to move up and down.
Preferably, described first direction control assembly includes the first platform and the first moving parts being placed in below described first platform and the first platform can being driven to move in a first direction;Described first moving parts includes fixing the first travelling nut being connected, the first roller bearing screw mandrel being arranged in the first travelling nut with the first platform, one end of described first roller bearing screw mandrel is provided with motor, described motor drives the first roller bearing screw mandrel to rotate, make the first travelling nut move back and forth on the first roller bearing screw mandrel, drive described first platform to move in a first direction;Described substrate and the fixing connection of the first platform;
Described second direction controls assembly and includes the second platform and be placed in below the second platform the second moving parts driving the second platform to move in second direction;Described second moving parts includes the second travelling nut and the second roller bearing screw mandrel being arranged in the second travelling nut, one end of described second roller bearing screw mandrel is provided with motor, described motor drives the second roller bearing screw mandrel to rotate, make the second travelling nut move back and forth on the second roller bearing screw mandrel, drive described first platform to move in a second direction;Described first platform and the second platform are cooperated connection by the first guide rail.
Preferably, described first platform is embedded in the second platform, and described first platform moves in the first guide rail of the second platform;The axis of described first guide rail is parallel with the first roller bearing screw mandrel axis;
Described second paralell is located at above the 3rd platform, and is connected by the second guide rail between the 3rd platform, and described 3rd platform moves along the second guide rail, and described second guide rail is parallel with the second roller bearing screw mandrel axis.
Preferably, described parallel institution at least includes three retractable screw rod axles being arranged in parallel, and is arranged at the omnidirectional mechanism at retractable screw rod axle two ends, and the motion of described parallel institution drives described pendulum bit platform to swing accordingly.
Preferably, described lifter is transposition arm, elastic component or mobile cylinder.
Preferably, being provided with one on described pedestal and include a screw mandrel and the nut being arranged on leading screw for the driving assembly driving transposition arm to move, described driving assembly, described nut is connected with transposition arm, being provided with angle between the axis of described screw mandrel and pedestal, one end of described screw mandrel is provided with motor;Described motor works, and drives screw mandrel to rotate, thus drives nut to move on screw mandrel.
Preferably, described 3rd platform and pedestal are respectively and fixedly provided with a shifting sledge, described transposition arm and the 3rd platform, pedestal junction to be moved in shifting sledge by pulley.
Preferably, described lifter connects for mobile cylinder, the cylinder axis of described mobile cylinder and the 3rd platform, and described mobile cylinder operation drives the 3rd platform to move up and down.
Preferably, described motor is servomotor.
The prominent effect of the present invention is: by the control of the change of general orientation Yu the little direction fineness of parallel institution, can well carry out the regulation of angles and positions, meanwhile, floor space is little, and the scope of application is more extensive, and practicality strengthens.Compared with prior art, decouple more simple and quick, more compact structure;The advantage that serial mechanism range of movement is big can be played, parallel institution angle accurate positioning can be played again, advantage that bearing capacity is strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is that the horizontal movement in the present invention controls assembly and the vertically movable structural representation controlling assembly.
Fig. 3 is the structural representation not comprising the first platform in Fig. 2 of the present invention.
Fig. 4 is the vertically movable structural representation controlling assembly in Fig. 2 of the present invention, the most still includes that second direction controls assembly.
Fig. 5 is the structural representation of the second platform.
Detailed description of the invention
Hereinafter accompanying drawing the most in conjunction with the embodiments, is described in further detail the detailed description of the invention of the present invention, so that technical solution of the present invention is more readily understood, grasps.
The invention provides a kind of accurately pendulum position therapeutic bed, as shown in Figure 1, similarly to the prior art, including pendulum bit platform 1, substrate 2, it is provided with multiple freedom parallel mechanism 3 between described pendulum bit platform 1 and described substrate 2, described parallel institution 3 at least includes three retractable screw rod axles being arranged in parallel, and is arranged at the omnidirectional mechanism at retractable screw rod axle two ends, and the motion of described parallel institution 3 drives described pendulum bit platform 1
Swing accordingly.In order to preferably control to put bit platform 1, it is provided with one bottom described pendulum bit platform for connecting the flat board 11 of fixing parallel institution 3.
Shown in Fig. 2, unlike the prior art, also it is disposed with horizontal movement below described substrate 3 and controls assembly and vertically movable control assembly.
Described horizontal movement controls assembly and includes that first direction controls assembly and second direction controls assembly, as preferred embodiment, hereinafter first direction is carried out concrete elaboration to, second direction as Y-direction as X, described X-direction is the first land lengths axis direction, and described Y-direction is the first berm width axis direction.
Described X includes the first platform 4 to controlling assembly and is arranged at the X under the first platform 4 to moving parts.To moving parts, described X includes that X, to roller bearing screw mandrel 42, and is sheathed on described X X on roller bearing screw mandrel 42 to travelling nut 41, described X is provided with the first motor 43 to one end of roller bearing screw mandrel 42.Described X fixes to travelling nut 41 and the first platform 4, and described first motor 43 works, and drives X to rotate to roller bearing screw mandrel 42, thus drives X to move on roller bearing screw mandrel 42 at X to travelling nut 41, final drives the first platform 4 to carry out in X reciprocating motion upwards.
Described Y-direction controls assembly and includes the second platform 5 and be arranged at the Y-direction moving parts under the second platform 5.Described Y-direction moving parts includes Y-direction roller bearing screw mandrel 62, and is sheathed on the Y-direction travelling nut 61 on described Y-direction roller bearing screw mandrel 62, and described X is provided with the first motor 63 to one end of roller bearing screw mandrel 62.Described Y-direction travelling nut 61 and the second platform 5 are fixed, and described second motor 63 works, and drives Y-direction roller bearing screw mandrel 62 to rotate, thus drives Y-direction travelling nut 61 to move on Y-direction roller bearing screw mandrel 62, and final drive the second platform 5 carries out the reciprocating motion in Y-direction.
For being better understood from this programme, shown in Fig. 3-Fig. 4, described first platform 4 is embedded in the second platform 5, and described first platform 4 moves in the first guide rail 51 of the second platform 5;The axis of described first guide rail 51 is parallel to roller bearing screw mandrel 42 axis with X.
Described second platform 5 is set up in above the 3rd platform 6, and be connected by the second guide rail 52 with between the 3rd platform 6, being provided with guide pillar 64 on described 3rd platform 6, described 3rd platform 6 moves along the second guide rail 52, and described second guide rail 52 is parallel with Y-direction roller bearing screw mandrel 62 axis.Certainly, if being set to Y-direction with X to achieving the goal too by the most corresponding with second direction for first direction.
When needing to carry out different directions mobile, moved to the selectivity with Y-direction by X and can well reach desired position.
Described horizontal movement controls to be provided with the vertically movable assembly that controls below assembly, and the described vertically movable assembly that controls includes the 3rd platform 6, pedestal 7, and is connected to the lifter between the 3rd platform and pedestal.The described vertically movable assembly that controls drives described horizontal movement control assembly to move up and down.Described lifter can be transposition arm, elastic component or mobile cylinder.When described lifter connects for mobile cylinder, the cylinder axis of described mobile cylinder and the 3rd platform, and described mobile cylinder operation drives the 3rd platform to move up and down.
As preferred embodiment, below using transposition arm as concrete elaboration scheme:
Concrete, described pedestal 7 being provided with one and includes a screw mandrel and the nut being arranged on leading screw for the driving assembly 9 driving transposition arm 8 to move, described driving assembly 9, described nut is connected with transposition arm 8, is provided with angle between the axis of described screw mandrel and pedestal.One end of described screw mandrel is provided with motor;Described motor works, and drives screw mandrel to rotate, thus drives nut to move on screw mandrel.
Being respectively and fixedly provided with a shifting sledge 71 on described 3rd platform 6 and pedestal 7, described transposition arm 8 is moved by pulley with the 3rd platform 6, pedestal 7 junction in shifting sledge 71.The motor related in the present embodiment is servomotor.
During use, patient lies on pendulum bit platform 1, first passes through the vertically movable general orientation controlling assembly and horizontal movement control assembly control therapeutic bed, and mechanism carries out the regulation of exact position the most in parallel.Range is extensive, practical.
The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technical schemes of being formed, within all falling within protection scope of the present invention.