CN115738103A - Clinical multi-angle of using of sbrt radiotherapy shelters from lid device - Google Patents

Abstract

The invention discloses a clinical multi-angle shielding cover device for sbrt radiotherapy, which relates to the field of radiotherapy shielding and comprises a bed body, a surrounding extrusion component, a pneumatic driving component, a synchronous multi-angle shielding component and a rotary driving component, wherein the surrounding extrusion component is arranged on the bed body. Compared with the prior art, the invention has the advantages that: when lying on the bed board, the patient just can control the extrusion of annular cover to the patient upside through the control valve, and then plays certain constraint effect to the patient health, avoids patient's health offset to influence the location, leads to the radiotherapy position accurate inadequately.

Description

Clinical multi-angle of using of sbrt radiotherapy shelters from lid device

Technical Field

The invention relates to the field of radiotherapy shielding, in particular to a clinical multi-angle shielding cover device for sbrt radiotherapy.

Background

Stereotactic Body Radiation Therapy (SBRT) is an abbreviation for SBRT. SBRT means that the high-precision radiotherapy skill is utilized to focus radical radiation dose to a tumor part in an in-vitro irradiation mode, so that the aims of destroying tumor cell tissues and preventing cancer cells from propagating are fulfilled; the pertinence is strong, and the treatment is mainly performed on small and isolated lesions of the tumor; the difference between the stereotactic radiotherapy and the common radiotherapy is that the stereotactic radiotherapy is more accurate in positioning and higher in single dose;

at present, in the radiotherapy process, the tumor is required to be accurately positioned and irradiated, and surrounding normal tissues and organs are protected as much as possible. Therefore, patient's position is fixed, the health shelters from the protection and seems very important, shelters from through artificial use baffle when traditional method is general, needs medical personnel to get into radiotherapy room adjustment sunshade, influences medical personnel's security, and it is higher to position requirement on one's body to the patient when carrying out definite radiotherapy, and it is not accurate enough to lead to the location easily if patient's health rocks, leads to the condition that the radiotherapy position produced the deviation from this easily, in addition, is not convenient for adjust the size that does not shelter from the position region.

Disclosure of Invention

The invention aims to solve the technical problems and provides a multi-angle shielding cover device for clinical practice of sbrt radiotherapy, which is convenient for restraining a patient, adjusting the size of an area at an unshielded position and adjusting the restraining force on the patient.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a clinical multi-angle shielding cover device for sbrt radiotherapy comprises a bed body, a surrounding extrusion component, a pneumatic driving component, a synchronous multi-angle shielding component and a rotary driving component, wherein the surrounding extrusion component is arranged on the bed body, the pneumatic driving component is arranged on the inner side of the surrounding extrusion component, the synchronous multi-angle shielding component and the rotary driving component are arranged on the surrounding extrusion component, and the rotary driving component is used for driving the synchronous multi-angle shielding component to shield; the bed body includes bed board, supporting legs and headrest, the lower extreme of bed board is connected with the supporting legs, the headrest sets up the one end at the bed board upside.

Further, the surrounding extrusion assembly comprises an annular cover, an extrusion cylinder, a first electric push rod, a first sliding column and a sliding plate, wherein the lower side of the bed plate is connected with limiting plates which are symmetrically arranged, the inner sides of the limiting plates are connected through the first sliding column, the sliding plate slides on the outer side of the first sliding column, the first electric push rod is fixed on one limiting plate, the output end of the first electric push rod penetrates through the limiting plate and is connected with the sliding plate, the lower end of the sliding plate is connected with the extrusion cylinder, a first piston is arranged in the extrusion cylinder in a matched mode, one end of the first piston is connected with the extrusion cylinder through a first spring, a first push rod is connected to the lower end of the first piston, the lower end of the first push rod is connected with a fixed ring, the outer side of the fixed ring is connected with the annular cover through a bearing, and the annular cover can rotate on the outer side of the bed plate.

Specifically, the pneumatic type drive assembly includes slurcam, extrusion groove, gasbag, fixed pipe and promotes the pipe, the extrusion groove sets up the upside at the bed board, the slurcam closely laminates at the extrusion inslot, the both ends in extrusion groove are all connected and are equipped with slider one, two inner walls in extrusion groove all are equipped with slider complex spout one, the lower lateral wall at the bed board is fixed to the gasbag, the upper end and the extrusion inslot intercommunication of gasbag, the downside of slurcam is connected and is equipped with a plurality ofly and extrudees the spring three that the lateral wall is connected under the groove.

Preferably, the lower end of the air bag is communicated with the fixed pipe through a control valve, the pushing pipe tightly slides in the fixed pipe, the inner side of one end of the pushing pipe is connected with a second pushing rod through a supporting rod, the other end of the second pushing rod is connected with a second piston matched with the inner wall of the fixed pipe, and the other end of the pushing pipe is communicated with one side of the upper end of the extrusion cylinder through a ventilation pipe.

Further, synchronous multi-angle covers the subassembly and includes the arc hole, shelters from apron and triangular groove, the arc hole sets up the surface at annular cover, the both sides in arc hole all are equipped with the arc wall, two the both ends of arc wall are all connected and are equipped with slip post two, the outside cover of slip post one is equipped with spring two, shelter from the apron and set up the both sides in the arc hole, two the downside that shelters from the apron is connected in the one end of keeping away from and is equipped with arc wall complex slider two, the both ends of spring two are sheltered from the slider two phase connection on the apron with both sides respectively.

Specifically, the two sides of the shielding cover plates are provided with triangular grooves at opposite ends, and one shielding cover plate can slide against the upper side of the other shielding cover plate.

Preferably, the outer side wall of the annular cover is fixedly provided with a second supporting plate through a first supporting plate, the side wall of the second supporting plate is connected with a second electric push rod, the outer side wall of the annular cover is connected with a radiotherapy device through a fixing rod, the outer side of one fixing rod is fixedly provided with a winding roller through a bearing, the two shielding cover plates are equally connected with one opposite side and are respectively provided with a first traction rope, the other ends of the first traction ropes are wound on the outer side of the winding roller and are connected with the second traction rope, and the other ends of the second traction ropes are connected with the output end of the second electric push rod.

Further, the rotary driving assembly comprises a driving motor arranged on the inner side of the fixing ring, a gear is connected to the output end of the driving motor, and a fan-shaped rack meshed with the gear is arranged on the inner side of the annular cover in a connected mode.

Specifically, the two ends of the inner side of the annular cover are both fixedly provided with sponge rings.

Most preferably, the edge position of the pushing plate is connected with a sealing ring which is abutted against the inner wall of the extrusion groove.

Compared with the prior art, the invention has the advantages that:

1. when the patient lies on the bed board, only through the control valve just can control the extrusion of annular cover to the patient upside, and then play certain constraint effect to the patient health, avoid patient's health offset to influence the location, lead to the radiotherapy position accurate inadequately.

2. Degree and time through adjusting the control valve and opening can control the degree and the speed that the annular cover descends, and convenient fixes the patient, and fixed more convenient with the regulation.

3. The driving force for fixing the body of the patient does not need to use a motor or a push rod motor and other driving devices, the air bag is filled with the air bag only by the gravity of the patient, the annular cover is downwards extruded to fix the patient by the reaction force of the air bag, and the cost is further saved.

4. Can pull haulage rope one and haulage rope two through electric putter two's effect, can be to the apron that shelters from of both sides to the slide of going on simultaneously, with frequency and equal distance, under the condition of radiotherapentic equipment position determination, be convenient for adjust the position that needs carry out the radiotherapy, adjust more accurately.

5. Through the setting of triangular groove, shelter from the apron along with both sides and gliding in opposite directions in-process, shelter from apron gradual pile together, the gradual reduction in space that the triangular groove of both sides is constituteed only removes two and shelters from the apron and can reduce the triangular groove inner space in diversified, and the diversified region that needs carry out the radiotherapy of being convenient for adjust is convenient for shelter from the region of not radiotherapy.

6. The annular cover can slide and rotate on the bed board, so that the arc-shaped blocks can be adjusted conveniently to align different positions of the body position of a patient, and radiotherapy positioning is more convenient.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of another perspective structure according to the present invention.

Fig. 3 is a schematic view of the inside perspective of the annular shield of the present invention.

Fig. 4 is a schematic top view of the present invention.

FIG. 5 is a schematic view of a side structure of the present invention.

FIG. 6 isbase:Sub>A schematic sectional view of the position A-A in FIG. 4 according to the present invention.

Fig. 7 is a schematic cross-sectional view of the container of the present invention.

FIG. 8 is a schematic view of the structure of the shielding cover plate according to the present invention.

Fig. 9 is a schematic diagram of the structure of the position a in fig. 6 according to the present invention.

Fig. 10 is a schematic diagram of the structure of the position B in fig. 6 according to the present invention.

Fig. 11 is a schematic diagram of the structure of the position C in fig. 2 according to the present invention.

Fig. 12 is a schematic diagram of the structure at position D in fig. 1 according to the present invention.

Fig. 13 is a schematic view of the structure of the position E in fig. 3 according to the present invention.

As shown in the figure: 1. a bed body; 2. a surrounding extrusion assembly; 3. a pneumatic drive assembly; 4. synchronizing the multi-angle covering assembly; 5. a rotary drive assembly; 6. a bed board; 7. an annular shroud; 8. an extrusion cylinder; 9. an electric push rod I; 10. a first sliding column; 11. a sliding plate; 12. a limiting plate; 13. a second electric push rod; 14. a first piston; 15. a first push rod; 16. a fixing ring; 17. a push plate; 18. extruding a groove; 19. an air bag; 20. a fixed tube; 21. pushing the pipe; 22. a second push rod; 23. a second piston; 24. a vent pipe; 25. an arc-shaped hole; 26. a shielding cover plate; 27. a triangular groove; 28. an arc-shaped slot; 29. a second sliding column; 30. a second support plate; 31. a radiotherapy device; 32. a wind-up roller; 33. a drive motor; 34. a gear; 35. a rack; 36. a sponge ring.

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

Referring to the attached drawings 1, 2 and 3, a clinical multi-angle shielding cover device for sbrt radiotherapy comprises a bed body 1, a surrounding extrusion component 2, a pneumatic driving component 3, a synchronous multi-angle shielding component 4 and a rotary driving component 5, wherein the surrounding extrusion component 2 is arranged on the bed body 1, the pneumatic driving component 3 is arranged on the inner side of the surrounding extrusion component 2, the synchronous multi-angle shielding component 4 and the rotary driving component 5 are arranged on the surrounding extrusion component 2, and the rotary driving component 5 is used for driving the synchronous multi-angle shielding component 4 to shield; the bed body 1 comprises a bed plate 6, supporting legs and a headrest, wherein the lower end of the bed plate 6 is connected with the supporting legs, and the headrest is arranged at one end of the upper side of the bed plate 6.

Referring to fig. 1, 2, 3, 5 and 7, the surrounding extrusion assembly 2 includes an annular cover 7, an extrusion cylinder 8, a first electric push rod 9, a first sliding column 10 and a sliding plate 11, wherein the lower side of the bed plate 6 is connected with symmetrically arranged limiting plates 12, the inner sides of the two limiting plates 12 are connected through the first sliding column 10, the sliding plate 11 slides on the outer side of the first sliding column 10, the first electric push rod 9 is fixed on one of the limiting plates 12, the output end of the first electric push rod 9 penetrates through the limiting plates 12 to be connected with the sliding plate 11, the lower end of the sliding plate 11 is connected with the extrusion cylinder 8, a first piston 14 is arranged in the extrusion cylinder 8 in a matching manner, one end of the first piston 14 is connected with the extrusion cylinder 8 through a first spring, the lower end of the first piston 14 is connected with a first push rod 15, the lower end of the first push rod 15 is connected with a fixed ring 16, the outer side of the fixed ring 16 is connected with the annular cover 7 through a bearing, and the annular cover 7 can rotate on the outer side of the bed plate 6.

Referring to fig. 1, 2 and 9, the pneumatic driving assembly 3 includes a pushing plate 17, an extrusion groove 18, an air bag 19, a fixing tube 20 and a pushing tube 21, the extrusion groove 18 is disposed on the upper side of the bed plate 6, the pushing plate 17 is tightly attached to the extrusion groove 18, two ends of the extrusion groove 18 are respectively connected with a first sliding block, two inner walls of the extrusion groove 18 are respectively provided with a first sliding groove matched with the first sliding block, the air bag 19 is fixed on the lower side wall of the bed plate 6, the upper end of the air bag 19 is communicated with the extrusion groove 18, and the lower side of the pushing plate 17 is connected with a third spring connected with the lower side wall of the extrusion groove 18.

Referring to fig. 7, 9 and 10, the lower end of the air bag 19 is communicated with a fixed tube 20 through a control valve, the push tube 21 slides in the fixed tube 20 tightly, the inner side of one end of the push tube 21 is connected with a second push rod 22 through a support rod, the other end of the second push rod 22 is connected with a second piston 23 matched with the inner wall of the fixed tube 20, and the other end of the push tube 21 is communicated with one side of the upper end of the extrusion cylinder 8 through a vent pipe 24.

Referring to the attached drawings 1, 2, 8 and 11, the synchronous multi-angle covering assembly 4 includes an arc-shaped hole 25, a covering cover plate 26 and a triangular groove 27, the arc-shaped hole 25 is disposed on the surface of the annular cover 7, arc-shaped grooves 28 are disposed on both sides of the arc-shaped hole 25, two ends of the two arc-shaped grooves 28 are connected to a second sliding column 29, a second spring is sleeved on the outer side of the first sliding column 29, the covering cover plate 26 is disposed on both sides of the arc-shaped hole 25, a second sliding block matched with the arc-shaped grooves 28 is connected to one end, away from the lower side of the two covering cover plates 26, of the two sliding blocks, and two ends of the second spring are respectively connected to the second sliding blocks on the covering cover plates 26 on both sides.

Referring to fig. 8, the opposite ends of the shielding cover plates 26 at both sides are provided with triangular grooves 27, and one of the shielding cover plates 26 can slide against the upper side of the other shielding cover plate 26.

Referring to the attached drawings 2 and 12, a second support plate 30 is fixed on the outer side wall of the annular cover 7 through a first support plate, a second electric push rod 13 is connected to the side wall of the second support plate 30, a radiotherapy device 31 is connected to the outer side wall of the annular cover 7 through a fixed rod, a winding roller 32 is fixedly arranged on the outer side of one fixed rod through a bearing, a first traction rope is respectively connected to one opposite side of each of the two shielding cover plates 26, the other end of each of the two first traction ropes is wound on the outer side of the winding roller 32 and connected with the second traction rope, and the other end of each of the two traction ropes is connected with the output end of the second electric push rod 13.

Referring to fig. 2, 3 and 13, the rotation driving assembly 5 includes a driving motor 33 disposed inside the fixing ring 16, an output end of the driving motor 33 is connected to a gear 34, and a sector-shaped rack 35 engaged with the gear 34 is disposed inside the annular cover 7.

Referring to fig. 2, the two ends of the inner side of the annular cover 7 are both fixed with sponge rings 36, so that the patient feels more comfortable when the patient is squeezed.

Referring to fig. 9, a sealing ring abutting against the inner wall of the extrusion groove 18 is connected to the edge of the push plate 17, so that when the push plate 17 is lifted, the sealing effect in the extrusion groove 18 is better.

The working principle and the using process of the invention are as follows:

before radiotherapy, a patient lies on the bed plate 6, the head of the patient penetrates through the annular cover 7, the annular cover 7 is arranged on the upper side of the patient, when the patient lies down, the back of the patient lies on the push plate 17 through gravity, the push plate 17 is extruded to slide in the extrusion groove 18, the push plate 17 slides in the sliding groove I through the sliding block I, the push plate 17 slides more stably, gas in the extrusion groove 18 is extruded to fill the air bag 19 for deformation, the size of the air bag 19 is further enlarged, and the control valve is closed at the moment;

the sliding plate 11 can be driven to stably slide on the outer side of the sliding column I10 by opening the electric push rod I9, the extrusion cylinder 8, the push rod I15 and the fixing ring 16 are matched to regulate the horizontal sliding of the annular cover 7, the annular cover 7 is regulated to slide on the bed plate 6, the ventilation pipe 24 and the push pipe 21 can be driven to horizontally slide when the sliding plate 11 horizontally slides, and meanwhile, the push pipe 21 can horizontally slide in the fixing pipe 20;

by opening the rotation of the driving motor 33, the annular cover 7 can be driven to rotate on the outer side of the bed plate 6 by matching with the gear 34 and the rack 35, and the position of the arc-shaped hole 25 on the chest of the patient can be conveniently adjusted by matching with the horizontal sliding of the annular cover 7, so that the positioning during radiotherapy is facilitated;

when a patient lies down, the gas in the air bag 19 can pass through the fixing pipe 20 by opening the control valve, the gas enters the extrusion cylinder 8 through the push pipe 21 and the vent pipe 24, the first piston 14 is extruded to enable the first push rod 15 to slide on the extrusion cylinder 8, the first push rod 15 pushes the fixing ring 16 downwards, the annular cover 7 is pushed downwards to extrude the patient downwards, and therefore the patient can be extruded and fixed conveniently, the speed and the degree of extrusion of the annular cover 7 on the patient can be adjusted conveniently by controlling the opening time and the opening size of the control valve, and the patient fixing device is suitable for patients with different body types and the degree of fixation on the patient;

in the process that the extrusion cylinder 8 slides in the fixed tube 20, the supporting rod I and the pushing rod II 22 are matched to drive the piston II 23 to slide in the fixed tube 20, so that through the structure, the air pressure in the fixed tube 20 and the extrusion cylinder 8 cannot be influenced, the annular cover 7 cannot be downward or upward even if the pushing tube 21 slides in the fixed tube 20, the horizontal sliding of the annular cover 7 can be adjusted even if the annular cover 7 moves downward to fix a patient, and the degree of extrusion on the patient is not influenced when the annular cover 7 horizontally slides;

when the arc-shaped block on the annular cover 7 is aligned to a position, needing radiotherapy, of a patient, the first traction rope and the second traction rope are pulled by controlling the electric push rod 13, the shielding cover plates 26 on the two sides can slide oppositely at the same frequency and the same distance, meanwhile, the sliding block two slides on the outer side of the sliding column two 29 in the arc-shaped groove 28, and then the shielding cover plates 26 slide stably;

after the radiotherapy is completed, the push pipe 21 is made to slide in the fixed pipe 20 through the electric push rod I9 until the piston II 23 slides out in the fixed pipe 20 II, the external gas passes through the fixed pipe 20, the control valve and the air bag 19 enters the extrusion groove 18, meanwhile, the push pipe 21 and the air pipe 24 enter the extrusion cylinder 8, the extrusion cylinder 8 is the same as the external air pressure, the push rod I15 is pulled through the action of the spring I, the fixed ring 16 is lifted, the annular cover 7 is lifted, the patient can move out in the annular cover 7 conveniently, meanwhile, the push plate 17 is jacked up and reset through the action of the spring III, the pull rope I and the pull rope II are not pulled through controlling the electric push rod II 13 to be opened, the slider II on the two sides is driven to be separated through the action of the spring II, the arc-shaped holes 25 are opened through separating the two shielding cover plates 26, and then the shielding cover plates 26 are reset.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like which are mature in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, and the details are not described, and the content which is not described in detail in the specification belongs to the prior art which is known by a person skilled in the art.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a clinical multi-angle of using of sbrt radiotherapy shelters from lid device which characterized in that: the device comprises a bed body (1), a surrounding extrusion component (2), a pneumatic type driving component (3), a synchronous multi-angle covering component (4) and a rotary driving component (5), wherein the surrounding extrusion component (2) is arranged on the bed body (1), the pneumatic type driving component (3) is arranged on the inner side of the surrounding extrusion component (2), the synchronous multi-angle covering component (4) and the rotary driving component (5) are arranged on the surrounding extrusion component (2), and the rotary driving component (5) is used for driving the synchronous multi-angle covering component (4) to shield;

the bed body (1) comprises a bed plate (6), supporting legs and a headrest, the lower end of the bed plate (6) is connected with the supporting legs, and the headrest is arranged at one end of the upper side of the bed plate (6).

2. The clinical multi-angle shielding cover device for sbrt radiotherapy according to claim 1, wherein: the encircling extrusion assembly (2) comprises an annular cover (7), an extrusion cylinder (8), an electric push rod (9), a sliding column (10) and a sliding plate (11), limiting plates (12) which are symmetrically arranged are connected to the lower side of the bed plate (6), two limiting plates (12) are connected to the inner sides of the limiting plates (12) through the sliding column (10), the sliding plate (11) slides on the outer side of the sliding column (10), the electric push rod (9) is fixed on one of the limiting plates (12), the output end of the electric push rod (9) penetrates through the limiting plate (12) and is connected with the sliding plate (11), the lower end of the sliding plate (11) is connected with the extrusion cylinder (8), a piston (14) is arranged in the extrusion cylinder (8) in a matched mode, one end of the piston (14) is connected with the extrusion cylinder (8) through a spring, a first push rod (15) is connected to the lower end of the piston (14), the lower end of the first push rod (15) is connected with a fixing ring (16), the outer side of the annular cover (7) is connected with the rotating plate (6).

3. The clinical multi-angle shielding cover device for sbrt radiotherapy according to claim 2, wherein: pneumatic type drive assembly (3) are including slurcam (17), extrusion groove (18), gasbag (19), fixed pipe (20) and promotion pipe (21), extrusion groove (18) set up the upside in bed board (6), slurcam (17) closely laminates in extrusion groove (18), the both ends in extrusion groove (18) are all connected and are equipped with slider one, two inner walls in extrusion groove (18) all are equipped with slider complex spout one, the lower lateral wall in bed board (6) is fixed in gasbag (19), the upper end and the extrusion groove (18) in-connection of gasbag (19), the downside connection of slurcam (17) is equipped with a plurality ofly and extrudees the spring three that the lateral wall is connected under groove (18).

4. The clinical multi-angle shelter cap device of sbrt radiotherapy of claim 3, characterized in that:

the lower extreme of gasbag (19) passes through control valve and fixed pipe (20) intercommunication, push away pipe (21) inseparable slip in fixed pipe (20), the inboard of push away pipe (21) one end is equipped with catch bar two (22) through bracing piece one connection, the other end of catch bar two (22) is connected and is equipped with and fixes pipe (20) inner wall complex piston two (23), push away pipe (21) other end passes through ventilation pipe (24) and one side intercommunication of squeeze tube (8) upper end.

5. The clinical multi-angle of sbrt radiotherapy shelters from lid device according to claim 4 characterized in that: synchronous multi-angle covers subassembly (4) including arc hole (25), shelters from apron (26) and triangular groove (27), arc hole (25) set up the surface at annular cover (7), the both sides of arc hole (25) all are equipped with arc wall (28), two the both ends of arc wall (28) are all connected and are equipped with sliding column two (29), the outside cover of sliding column one (29) is equipped with spring two, shelter from apron (26) and set up the both sides in arc hole (25), two the downside that shelters from apron (26) is connected in the one end of keeping away from and is equipped with arc wall (28) complex slider two, the both ends of spring two are sheltered from the slider two-phase connection on apron (26) with both sides respectively.

6. The clinical multi-angle of sbrt radiotherapy shelters from lid device according to claim 5 characterized in that:

the opposite ends of the shielding cover plates (26) on the two sides are respectively provided with a triangular groove (27), and one shielding cover plate (26) can slide against the upper side of the other shielding cover plate (26).

7. The clinical multi-angle shelter cap device of claim 6, characterized in that: the lateral wall of annular cover (7) is fixed with backup pad two (30) through backup pad one, the lateral wall of backup pad two (30) is connected and is equipped with electric putter two (13), the lateral wall of annular cover (7) is connected through the dead lever and is equipped with radiotherapy ware (31), and one of them dead lever outside is equipped with winding roller (32) through the bearing is fixed, two it is equipped with haulage rope one, two to shelter from apron (26) and equally divide in opposite one side and do not connect, two the outside and haulage rope two phase connection of winding roller (32) are all twined to the other end of haulage rope one, the other end of haulage rope two is connected with the output of electric putter two (13).

8. The clinical multi-angle cover device of claim 7, wherein: rotatory drive assembly (5) are including setting up at solid fixed ring (16) inboard driving motor (33), the output connection of driving motor (33) is equipped with gear (34), the inboard connection of annular cover (7) is equipped with and sets up sectorial rack (35) with gear (34) meshing.

9. The clinical multi-angle shelter cap device of claim 8, characterized in that: sponge rings (36) are fixedly arranged at the two ends of the inner side of the annular cover (7).

10. The clinical multi-angle of sbrt radiotherapy shelters from lid device according to claim 9 characterized in that: and the edge position of the pushing plate (17) is connected with a sealing ring which is propped against the inner wall of the extrusion groove (18).

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