Radiotherapeutic device

1. A radiotherapeutic device, comprising:

a gantry, a detector and a slide driving unit, wherein the slide driving unit comprises a sliding guide rail, a driving apparatus and a movable block, the detector is fixed on the movable block, the movable block drives the detector to slide along the sliding guide rail driven by the driving apparatus;

wherein the driving apparatus comprises a driver, a first motivation portion disposed on the movable block, and a second motivation portion disposed on the sliding guide rail, the first motivation portion cooperates with the second motivation portion to drive the movable block sliding along the sliding guide rail;

the first motivation portion comprises a first motivation unit, the second motivation portion comprises a second motivation unit, the first motivation unit is connected to the movable block and the driver respectively, the second motivation unit is disposed on the sliding guide rail, and the driver drives the first motivation unit to move on the second motivation unit and further drives the movable block to slide along the sliding guide rail;

the first motivation portion further comprises a sliding portion disposed on the movable block, and the second motivation portion further comprises a sliding rail unit mounted on the movable block, the sliding portion is cooperated with the sliding rail unit and slides relative to each other;

the sliding portion is movable relative to the movable block;

the movable block is mounted with a mounting base, and the sliding portion is disposed on the mounting base, the sliding portion is movable relative to the mounting base; and

the sliding portion comprises at least one pulley slidable on the sliding guide rail.

2. The radiotherapeutic device of claim 1 , wherein at least one sliding portion is disposed on each side of the sliding guide rail, and the two sliding portionson both sides sandwich the sliding guide rail.

3. The radiotherapeutic device of claim 1 , wherein the sliding rail unit comprises at least one groove disposed on the sliding guide rail, and the pulley is provided with a flange which engages with the groove; or the pulley is provided with at least one groove, and the sliding rail unit comprises a flange disposed on the sliding guide rail that engages the groove.

4. The radiotherapeutic device of claim 1 , wherein the sliding portion further comprises a pulley base, the pulley is mounted on the pulley base, the pulley base is mounted on the mounting base, and the pulley base is movable relative to the mounting base.

5. The radiotherapeutic device of claim 4 , wherein the mounting base is provided with a groove, the pulley base slides along the groove.

6. The radiotherapeutic device of claim 5 , wherein a locking assembly is disposed on the mounting base, the pulley base is fixed or movable relative to the mounting base under the force of the locking assembly.

7. The radiotherapeutic device of claim 1 , wherein a cover plate is disposed on the movable block, and the detector is disposed between the movable block and the cover plate, the cover plate comprises a through hole to expose the detector to receive radiation.

8. The radiotherapeutic device of claim 1 , wherein the detector is mounted on the movable block by a moving mechanism, to move along a radial direction of the gantry.

9. The radiotherapeutic device of claim 1 , wherein the detector is mounted on the movable block through a driving mechanism, to move along an axial direction of the gantry.

10. The radiotherapeutic device of claim 1 , wherein the detector and the slide driving unit are disposed on the inner side of the gantry; and

the sliding guide rail is arc shaped, and the center of the sliding guide rail coincides with the center of the gantry.

11. The radiotherapeutic device of claim 1 , further comprising: a radiation head for emitting γ rays.

12. The radiotherapeutic device of claim 1 , further comprising: a radiation head for emitting rays in MV-level.

13. A radiotherapeutic device, comprising:

a gantry, a detector, at least two radiation heads and a slide driving unit, wherein the slide driving unit comprises a sliding guide rail, a driving apparatus and a movable block, the detector is fixed on the movable block, the movable block drives the detector to slide along the sliding guide rail driven by the driving apparatus, and receive rays emitted by the radiation heads;

wherein the driving apparatus comprises a driver, a first motivation portion disposed on the movable block, and a second motivation portion disposed on the sliding guide rail, the first motivation portion cooperates with the second motivation portion to drive the movable block sliding along the sliding guide rail;

the first motivation portion comprises a first motivation unit, the second motivation portion comprises a second motivation unit, the first motivation unit is connected to the movable block and the driver respectively, the second motivation unit is disposed on the sliding guide rail, and the driver drives the first motivation unit to move on the second motivation unit and further drives the movable block to slide along the sliding guide rail;

the first motivation portion further comprises a sliding portion disposed on the movable block, and the second motivation portion further comprises a sliding rail unit mounted on the movable block, the sliding portion is cooperated with the sliding rail unit and slides relative to each other;

he sliding portion is movable relative to the movable block;

the movable block is mounted with a mounting base, and the sliding portion is disposed on the mounting base, the sliding portion is movable relative to the mounting base; and

the sliding portion comprises at least one pulley slidable on the sliding guide rail.

14. The radiotherapeutic device of claim 13 , wherein the at least two radiation heads comprise a therapeutic head and an imaging head.

15. The radiotherapeutic device of claim 13 , wherein the at least two radiation heads comprise a focused therapeutic head and a conformal therapeutic head.