Protective device for tumor radiotherapy

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses a tumor radiotherapy protection device which comprises a frame-shaped frame, vertical frames are welded to the tops of the two ends of the frame-shaped frame, transverse movement driving parts are arranged in the frame-shaped frame and the vertical frames, and a projection base is fixedly installed on the lower surface of each transverse movement driving part. The left side and the right side of the projection base are both provided with side face shielding pieces, an aperture adjusting piece is arranged in the projection base, and a projection simulation piece is fixedly installed at the top of the projection base. A rotation driving part is welded to the bottom of the frame-shaped frame, and a lifting treatment bed is arranged in the rotation driving part. A driving motor drives a second connecting shaft to rotate to enable an annular chain to move so as to enable a projection base to move in the left-right direction, meanwhile, a third motor drives a second gear to rotate so as to drive a frame-shaped frame to deflect along the axis of an annular base, and therefore the purpose of conveniently adjusting the ray projection position is achieved. And the patient can be conveniently treated in postures such as sitting postures, prone postures, supine postures and lateral postures.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a tumor radiotherapy protection device. Background Art

[0002] Although radiation can treat benign diseases, it is mainly used to treat malignant tumors. It, together with surgical treatment and drug treatment, constitutes the three major means of treating tumors. Approximately 60% - 70% of malignant tumor patients have received radiotherapy at a certain stage of their disease course. However, radiation can damage healthy cells. Therefore, it is necessary to strictly control the irradiated area to protect healthy cells.

[0003] A Chinese patent with an application date of March 6, 2024, and a publication number of CN117942509A discloses a tumor radiotherapy protection device, including: a mounting platform detachably mounted on a bed body, and a mounting frame parallel to it is arranged on the mounting platform; a shielding component arranged on the mounting platform, and the shielding component can partially shield a square through hole formed on the mounting platform; a driving component connected to the shielding component, and the driving component is used to drive the shielding component to act; a lifting component arranged in two groups and mounted on both sides of the mounting frame, and the lifting component can drive the mounting frame to move away from or close to the mounting platform when the shielding component acts, so that the shielding component and the mounting frame move synchronously, improving the irradiation accuracy and avoiding damage to non-lesion tissues of the patient.

[0004] However, in this technical solution, the square area formed after the square through hole is shielded is always at the center of the mounting platform. The location of the tumor is random and not necessarily only in the middle of the body. The patient needs to adjust their body position by themselves to align the tumor with the square area. After the patient adjusts their body position, some limbs are likely to be exposed outside the top view projection of the mounting platform and are affected by radiation, so further improvement can be made. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a tumor radiotherapy protection device, which has the advantages of being convenient to adjust the radiation irradiation area, etc., and solves the problem that the radiation irradiation area is always at the center and the patient needs to adjust their body position by themselves, which is inconvenient to operate.

[0007] (2) Technical Solutions

[0008] To achieve the above object of conveniently adjusting the radiation irradiation area, the present invention provides the following technical solution: A tumor radiotherapy protection device includes a frame-shaped rack. Vertical racks are welded to the tops of both ends of the frame-shaped rack. A transverse movement driving member is arranged inside the frame-shaped rack and the vertical racks. A projection base is fixedly installed on the lower surface of the transverse movement driving member. Side shielding members are arranged on both the left and right sides of the projection base. An aperture adjusting member is arranged inside the projection base. A projection simulation member is fixedly installed on the top of the projection base. A rotation driving member is welded to the bottom of the frame-shaped rack. A lifting treatment bed is arranged inside the rotation driving member.

[0009] Preferably, the transverse movement driving member includes two chain conveyors which are distributed front and back; each chain conveyor includes a lower sprocket one rotatably connected to the inner side of the left end of the frame-shaped rack, a lower sprocket two rotatably connected to the inner wall of the right end of the frame-shaped rack, an upper sprocket one rotatably connected to the inner wall of the top end of one of the vertical racks, an upper sprocket two rotatably connected to the inner wall of the top end of the other vertical rack. Two pressure wheels are rotatably connected to the top of the frame-shaped rack and are distributed left and right. The lower sprocket one, the lower sprocket two, the upper sprocket one and the upper sprocket two are connected by an annular chain. The annular chain is in a "concave" shape. The pressure wheels are attached to the inner sides of the two corners of the annular chain. A connecting shaft one is fixedly installed between the two lower sprocket ones and between the two lower sprocket twos. The connecting shaft one is rotatably connected to the frame-shaped rack. A connecting shaft two is fixedly installed between the two upper sprocket ones and between the two upper sprocket twos. One of the connecting shaft twos is rotatably connected to the vertical rack, and a tensioning member is arranged between the other connecting shaft two and the vertical rack.

[0010] Preferably, the annular chain includes an outer U-shaped part and an inner U-shaped part. The tops of the outer U-shaped part and the inner U-shaped part are connected to each other. The lower sprocket one and the lower sprocket two are respectively attached to the inner sides of the two corners of the outer U-shaped part. The pressure wheels are attached to the inner sides of the corners of the inner U-shaped part. The upper sprocket one and the upper sprocket two are respectively attached to the inner sides of the joints at the tops of the outer U-shaped part and the inner U-shaped part. The tensioning member includes slide rails fixedly installed on the front and rear sides of the top end of the vertical rack. Avoidance grooves are penetrated and opened on the front and rear sides of the top end of the vertical rack. The connecting shaft two passes through the avoidance groove. A slide seat is slidably connected in the slide rail. The connecting shaft two is rotatably connected in the slide seat. An arched plate is fixedly installed between the two slide seats. A hydraulic cylinder one is fixedly installed at the bottom of the arched plate.

[0011] Preferably, the projection base includes a lower clamping plate fixedly installed at the bottom of the annular chain. An upper clamping plate is arranged above the lower clamping plate. Spacers are fixedly installed between the four corners of the lower clamping plate and the upper clamping plate. Projection holes are penetrated through the centers of the lower clamping plate and the upper clamping plate. A left lead sheet is fixedly installed on the left side of the lower clamping plate. A right lead sheet is fixedly installed on the right side of the lower clamping plate.

[0012] Preferably, the aperture adjusting member includes a rotating ring rotatably connected to the top of the lower clamping plate. A regular polygon groove is formed in the top of the rotating ring. A retaining ring is fixedly installed on the top edge of the rotating ring. V-shaped grooves are arranged in an array on the outer wall of the retaining ring. A first gear is engaged with the retaining ring through the V-shaped grooves. A first motor is fixedly installed at the center of the first gear. A fixing ring is attached to the top of the retaining ring. The fixing ring is fixedly installed at the bottom of the upper clamping plate. The inner diameters of the rotating ring and the regular polygon groove are equal to the aperture of the projection hole. Inclined grooves are arranged in an array on the fixing ring. The number of the inclined grooves is equal to the number of the side lengths of the regular polygon groove. Sealing plates are arranged in an array between the fixing ring and the rotating ring. The number of the sealing plates is equal to the number of the side lengths of the regular polygon groove. Sliders are fixedly installed at the bottom corners of the sealing plates. The sliders are slidably connected in the regular polygon groove. Slide columns are fixedly installed at the tops of the sealing plates. The slide columns are slidably connected in the inclined grooves.

[0013] Preferably, the side shielding member includes sealing lead plates arranged in an array on the outer surface of the outer U-shaped part. Each of the sealing lead plates includes a lead plate body fixedly installed on the link plate of the annular chain. A lower extension part is integrally formed on the lower left half of the lead plate body. An upper extension part is integrally formed on the upper right half of the lead plate body. The thicknesses of the lower extension part and the upper extension part are both equal to half of the thickness of the lead plate body. The width of the lower extension part or the upper extension part is greater than half of the distance between adjacent two lead plate bodies, and the widths of the lower extension part and the upper extension part are both less than the distance between adjacent two lead plate bodies. The left lead sheet is attached to the lower side of one of the upper extension parts, and the right lead sheet is attached to the upper side of one of the lower extension parts.

[0014] Preferably, the projection simulation member includes a support frame fixedly installed on the top of the projection base. A stepped groove is formed through the top wall of the stepped groove. Two horizontal guide rails are fixedly installed on the top wall of the stepped groove. The two horizontal guide rails are distributed front and back. An inclined guide rail is arranged at the left end of each horizontal guide rail. A first roller is arranged in the horizontal guide rail. A second roller is arranged in the inclined guide rail. The two first rollers and the two second rollers are connected to a lamp holder. An LED lamp is arranged at the bottom of the lamp holder. A lifting driving member is arranged on the left side of the lamp holder.

[0015] Preferably, the lifting driving member includes a counterweight roller fixedly installed between the two second rollers. A second motor is fixedly installed in the upper left half of the left side of the support frame. A winding roller is fixedly installed at the output end of the second motor. A steel wire rope is wound around the winding roller. One end of the steel wire rope away from the winding roller is fixedly installed at the top left end of the lamp holder. A fixed pulley is arranged on the top wall of the left side of the support frame. The steel wire rope passes over the top of the fixed pulley.

[0016] Preferably, the rotation driving member includes two annular frames which are respectively fixedly installed at the bottoms of both ends of the frame-shaped frame. The cross-section of the annular frame is in the shape of a "work" character. A support base is arranged at the lower half of the annular frame. The top of the support base is an arc surface. Limiting wheels are arranged in an array on the left and right edges of the top of the support base, and the limiting wheels are inserted into the annular frame. A ring seat is fixedly installed on the lower side of the middle of the frame-shaped frame. A semi-toothed ring is fixedly installed on the outer wall of the lower half of the ring seat. A second gear is meshed with the lower side of the semi-toothed ring, and a third motor is fixedly installed at the center of the second gear.

[0017] Preferably, the lifting treatment bed includes a bed board arranged in the middle of the ring seat. Expansion rods are fixedly installed at the four corners of the bottom of the bed board. A second hydraulic cylinder is fixedly installed at the center of the bottom of the bed board. An arched seat is fixedly installed at the bottom of the second hydraulic cylinder, and the ring seat passes through the inside of the arched seat.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a tumor radiotherapy protection device, which has the following

[0020] beneficial effects:

[0021] 1. For this tumor radiotherapy protection device, the patient is in a sitting position, supine position, prone position, lateral position, etc. on the bed board. The winding roller is driven to rotate by the second motor, the steel wire rope is wound, so that the first roller rolls to the right along the horizontal guide rail, and the second roller rolls upward along the inclined guide rail until the first roller rolls to the right end of the horizontal guide rail, and the lamp holder is right below the stepped groove, and the LED lamp is at the center of the stepped groove; thus, the ray irradiation situation can be pre-simulated, which is convenient for adjusting the size of the regular octagon to cover the tumor area;

[0022] 2. For this tumor radiotherapy protection device, the driving motor drives the second connecting shaft to rotate, the first upper sprocket or the second upper sprocket rotates, so that the endless chain moves, and thus the projection base moves along the left and right directions, and the projection of the LED light passing through the regular octagon through hole moves along the left and right directions; at the same time, the third motor drives the second gear to rotate, driving the ring seat and the semi-toothed ring to rotate, thereby driving the frame-shaped frame to deflect along the axis of the ring seat, so that the projection of the LED light passing through the regular octagon through hole deflects; thus, it is convenient to adjust the position of the ray projection, and it is convenient for the patient to be treated in a sitting position, prone position, supine position, lateral position, etc.;

[0023] 3. For this tumor radiotherapy protection device, the endless chain moves, driving the lower splint to move along the left and right directions, adjusting the position of the top view projection of the projection hole, and during the movement of the lower splint, the lower splint, the lead plate body, the lower extension part and the upper extension part always keep blocking and sealing the bottom of the endless chain, thereby ensuring the ray blocking effect. Description of the drawings

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of a tumor radiotherapy protection device proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the upper half of the three-dimensional structure of a tumor radiotherapy protection device proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of a transverse driving member and a side shielding member for a tumor radiotherapy protection device proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of a transverse driving component for a tumor radiotherapy protection device proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of a tensioning member for a tumor radiotherapy protection device proposed by the present invention;

[0029] Figure 6 This is a schematic top view of the three-dimensional structure of a projection base and an aperture adjustment member for a tumor radiotherapy protection device proposed by the present invention;

[0030] Figure 7 This is a bottom-up structural diagram of a projection base and an aperture adjustment member for a tumor radiotherapy protection device proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of an aperture adjustment member for a tumor radiotherapy protection device proposed by the present invention;

[0032] Figure 9 This is a schematic diagram of the main structure of a side shield for a tumor radiotherapy protection device proposed by the present invention;

[0033] Figure 10 This is a schematic diagram of a top-down stereoscopic structure of a projection simulation component for a tumor radiotherapy protection device proposed by the present invention;

[0034] Figure 11 This is a schematic diagram of the upward-looking three-dimensional structure of a projection simulation component for a tumor radiotherapy protection device proposed by the present invention;

[0035] Figure 12 This is a schematic diagram of the three-dimensional structure of the lower half of a tumor radiotherapy protection device proposed by the present invention.

[0036] In the figure: 100, frame; 200, stand; 300, lateral drive member; 400, projection base; 500, aperture adjustment member; 600, side shielding member; 700, projection simulation member; 800, rotation drive member; 900, lifting treatment bed;

[0037] 301. Lower sprocket one; 302. Lower sprocket two; 303. Upper sprocket one; 304. Upper sprocket two; 305. Pressure wheel; 306. Ring chain; 307. Connecting shaft one; 308. Connecting shaft two; 309. Avoidance groove; 310. Slide rail; 311. Slide seat; 312. Arch-shaped plate; 313. Hydraulic cylinder one; 3061. Outer U-shaped part; 3062. Inner U-shaped part;

[0038] 401. Lower clamping plate; 402. Upper clamping plate; 403. Spacer block; 404. Projection hole; 405. Left lead sheet; 406. Right lead sheet;

[0039] 501. Swivel ring; 502. Regular polygon groove; 503. Enclosure ring; 504. Fixed ring; 505. Inclined groove; 506. Sealing plate; 507. Slide block; 508. Slide post; 509. Motor one; 510. Gear one; 601. Lead plate body; 602. Lower extension part; 603. Upper extension part;

[0040] 701. Support frame; 702. Step groove; 703. Horizontal guide rail; 704. Inclined guide rail; 705. Roller one; 706. Roller two; 707. Lamp holder; 708. Counterweight roller; 709. Motor two; 710. Winding roller; 711. Steel wire rope; 712. Fixed pulley;

[0041] 801. Ring-shaped frame; 802. Support seat; 803. Limiting wheel; 804. Ring-shaped seat; 805. Half-tooth ring; 806. Gear two; 807. Motor three; 901. Bed board; 902. Telescopic rod; 903. Hydraulic cylinder two; 904. Arch-shaped seat. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1-2 , a tumor radiotherapy protection device, including a frame-shaped frame 100, vertical frames 200 are welded to the tops of both ends of the frame-shaped frame 100, a transverse movement driving member 300 is arranged inside the frame-shaped frame 100 and the vertical frames 200, a projection base 400 is fixedly installed on the lower surface of the transverse movement driving member 300, side shielding members 600 are arranged on both the left and right sides of the projection base 400, a hole diameter adjusting member 500 is arranged inside the projection base 400, and a projection simulation member 700 is fixedly installed on the top of the projection base 400; a rotation driving member 800 is welded to the bottom of the frame-shaped frame 100, and a lifting treatment bed 900 is arranged inside the rotation driving member 800.

[0044] Please refer to Figures 3-4 As shown in the figure, the transverse movement driving member 300 includes two chain conveyors, and the two chain conveyors are distributed front and back. Each chain conveyor includes a lower sprocket 301 rotatably connected to the inner side of the left end of the frame 100, a lower sprocket 302 rotatably connected to the inner wall of the right end of the frame 100, an upper sprocket 303 rotatably connected to the inner wall of the top end of one of the vertical frames 200, and an upper sprocket 304 rotatably connected to the inner wall of the top end of the other vertical frame 200. Two pressure wheels 305 are rotatably connected to the top of the frame 100, and the two pressure wheels 305 are distributed left and right. The lower sprocket 301, the lower sprocket 302, the upper sprocket 303, and the upper sprocket 304 are connected by an endless chain 306. The endless chain 306 is in a "concave" shape, and the pressure wheels 305 are attached to the inner sides of the two corners of the endless chain 306.

[0045] A first connecting shaft 307 is fixedly installed between the two lower sprockets 301 and between the two lower sprockets 302. The first connecting shaft 307 is rotatably connected to the frame 100. A second connecting shaft 308 is fixedly installed between the two upper sprockets 303 and between the two upper sprockets 304. One of the second connecting shafts 308 is rotatably connected to the vertical frame 200 and is connected to a driving motor, and a tensioning member is provided between the other second connecting shaft 308 and the vertical frame 200. The tensioning member is used to push the second connecting shaft 308 upward to keep the endless chain 306 in a taut state.

[0046] Please refer to Figures 4-5 As shown in the figure, the endless chain 306 includes an outer U-shaped portion 3061 and an inner U-shaped portion 3062. The tops of the outer U-shaped portion 3061 and the inner U-shaped portion 3062 are connected to each other. The lower sprocket 301 and the lower sprocket 302 are respectively attached to the inner sides of the two corners of the outer U-shaped portion 3061. The pressure wheels 305 are attached to the inner sides of the corners of the inner U-shaped portion 3062. The upper sprocket 303 and the upper sprocket 304 are respectively attached to the inner sides of the joints between the tops of the outer U-shaped portion 3061 and the inner U-shaped portion 3062. The lengths of both sides of the outer U-shaped portion 3061 are equal to or greater than half of the length of the bottom of the outer U-shaped portion 3061.

[0047] The tensioning member includes slide rails 310 fixedly installed on the front and rear sides of the top end of the vertical frame 200. Avoidance grooves 309 are respectively formed through the front and rear sides of the top end of the vertical frame 200. The second connecting shaft 308 passes through the avoidance grooves 309. A sliding seat 311 is slidably connected in the slide rails 310. The second connecting shaft 308 is rotatably connected in the sliding seat 311. An arched plate 312 is fixedly installed between the two sliding seats 311. The arched plate 312 is attached to the side of the vertical frame 200 away from the center of the frame 100. A first hydraulic cylinder 313 is fixedly installed at the bottom of the arched plate 312. By pushing the arched plate 312 upward through the first hydraulic cylinder 313, the second connecting shaft 308 is lifted, and the endless chain 306 is tightened.

[0048] Please refer to Figures 6-7 , the projection base 400 includes a lower clamping plate 401 fixedly installed at the bottom of the annular chain 306. An upper clamping plate 402 is arranged above the lower clamping plate 401. Block pads 403 are fixedly installed between the four corners of the lower clamping plate 401 and the upper clamping plate 402. The side of the block pad 403 facing the centers of the lower clamping plate 401 and the upper clamping plate 402 is an arc surface. The aperture adjusting member 500 is clamped on the circumferential surface through the block pad 403 to limit the aperture adjusting member 500. Projection holes 404 are respectively formed through the centers of the lower clamping plate 401 and the upper clamping plate 402, and the projection holes 404 are used for the radiation line to pass through. A left lead sheet 405 is fixedly installed on the left side of the lower clamping plate 401, and a right lead sheet 406 is fixedly installed on the right side of the lower clamping plate 401. The left lead sheet 405 and the right lead sheet 406 have the same thickness, and the left lead sheet 405 and the right lead sheet 406 are staggered with each other in the vertical direction.

[0049] Please refer to Figures 6-8 , the aperture adjusting member 500 includes a rotating ring 501 rotatably connected to the top of the lower clamping plate 401. A circular positioning groove corresponding to the rotating ring 501 is formed at the top of the lower clamping plate 401, so that the rotating ring 501 can be stably rotatably connected to the top of the lower clamping plate 401. A regular polygon groove 502 is formed at the top of the rotating ring 501. A retaining ring 503 is fixedly installed at the top edge of the rotating ring 501. V-shaped grooves are arranged in an array on the outer wall of the retaining ring 503. The retaining ring 503 is engaged with a first gear 510 through the V-shaped grooves. A first motor 509 is fixedly installed at the center of the first gear 510. The first motor 509 is driven to rotate the first gear 510, so as to drive the retaining ring 503 and the rotating ring 501 to rotate.

[0050] A fixing ring 504 is attached to the top of the enclosure ring 503, and the fixing ring 504 is fixedly installed at the bottom of the upper clamping plate 402. The inner diameters of the rotating ring 501 and the regular polygon groove 502 are equal to the aperture diameter of the projection hole 404. The fixing ring 504 is provided with inclined grooves 505 arranged in an array, and the number of the inclined grooves 505 is equal to the number of side lengths of the regular polygon groove 502. In this embodiment, the number of side lengths of the regular polygon groove 502 is eight. Sealing plates 506 are arranged in an array between the fixing ring 504 and the rotating ring 501, and the sealing plates 506 are used to block and seal the projection holes 404. The number of the sealing plates 506 is equal to the number of side lengths of the regular polygon groove 502. Sliders 507 are fixedly installed at the bottom corners of the sealing plates 506, and the sliders 507 are slidably connected in the regular polygon groove 502. Slide columns 508 are fixedly installed at the tops of the sealing plates 506, and the slide columns 508 are slidably connected in the inclined grooves 505. Therefore, when the rotating ring 501 rotates, while the slider 507 slides within the side length of the regular polygon groove 502, the slide column 508 slides in the inclined groove 505, causing the sealing plate 506 to deflect while moving outward, so as to enclose a regular octagon through hole by multiple sealing plates 506 and continuously adjust the side length of the regular octagon through hole. In other embodiments, the number of the sealing plates 506 can be increased to make the through hole enclosed by the sealing plates 506 approximately circular.

[0051] Please refer to Figure 9 , the side shielding member 600 includes sealing lead plates arranged in an array on the outer surface of the outer U-shaped part 3061. Each sealing lead plate includes a lead plate body 601, and the lead plate body 601 is fixedly installed on the link plate of the annular chain 306. A lower extension part 602 is integrally formed on the lower left half of the lead plate body 601, and an upper extension part 603 is integrally formed on the upper right half of the lead plate body 601. The thicknesses of the lower extension part 602 and the upper extension part 603 are both equal to half of the thickness of the lead plate body 601. The width of the lower extension part 602 or the upper extension part 603 is greater than half of the distance between adjacent two lead plate bodies 601, and the widths of the lower extension part 602 and the upper extension part 603 are both smaller than the distance between adjacent two lead plate bodies 601. Therefore, the gap between adjacent two lead plate bodies 601 can be sealed by the lower extension part 602 and the upper extension part 603, and when the lead plate body 601 passes through the corner of the annular chain 306, the lower extension part 602 and the upper extension part 603 can be separated to ensure that the lower extension part 602 can smoothly move along with the annular chain 306. The left lead sheet 405 is attached to the lower side of one of the upper extension parts 603, and the right lead sheet 406 is attached to the upper side of one of the lower extension parts 602. Therefore, the sealing effect between both sides of the lower clamping plate 401 and the lead plate body 601 is ensured.

[0052] It moves through the annular chain 306, driving the lower clamping plate 401 to move in the left - right direction, adjusting the position of the top - view projection of the projection hole 404. During the movement of the lower clamping plate 401, the lower clamping plate 401, the lead plate body 601, the lower extension part 602, and the upper extension part 603 always keep shielding and sealing the bottom of the annular chain 306. Thus, the rays projected at the projection hole 404 can be moved in the left - right direction.

[0053] Please refer to Figures 10-11 , the projection simulation part 700 includes a support frame 701 fixedly installed on the top of the projection base 400. A stepped groove 702 is formed through the top of the support frame 701, and the stepped groove 702 is used to install the radiotherapy device. Thus, the distance between the radiotherapy device and the projection base 400 is kept stable. When the area of the regular octagon through - hole enclosed by the sealing plate 506 remains unchanged, the range of ray projection remains unchanged. Two horizontal guide rails 703 are fixedly installed on the top wall of the stepped groove 702. The two horizontal guide rails 703 are distributed front - to - back. An inclined guide rail 704 is arranged at the left end of each horizontal guide rail 703. The length of the inclined guide rail 704 is slightly greater than the length of the horizontal guide rail 703. A roller one 705 is arranged in the horizontal guide rail 703, and a roller two 706 is arranged in the inclined guide rail 704. The two roller ones 705 and the two roller twos 706 are connected to a lamp holder 707. An LED lamp is arranged at the bottom of the lamp holder 707. When the roller two 706 slides to the top end of the inclined guide rail 704 and the roller one 705 slides to the right end of the horizontal guide rail 703, the lamp holder 707 remains horizontal and shields the center of the stepped groove 702, and the LED lamp is below the center of the stepped groove 702. Thus, the light of the LED lamp is used to simulate the radiotherapy rays of the radiotherapy device. Before radiotherapy, the area where the rays are projected during radiotherapy can be simulated by the projection of the light of the LED lamp passing through the regular octagon through - hole. A lifting driving part is arranged on the left side of the lamp holder 707.

[0054] The lifting drive includes a counterweight roller 708 fixedly mounted between two second rollers 706, causing rollers 706 to roll downward along the inclined guide rail 704. A second motor 709 is fixedly mounted within the upper left half of the support frame 701. A take-up roller 710 is fixedly mounted at the output end of motor 709. A steel wire rope 711 is wound around the take-up roller 710. The end of the steel wire rope 711, away from the take-up roller 710, is fixedly mounted on the top left end of the lamp holder 707. A fixed pulley 712 is provided on the left top wall of the support frame 701, over which the steel wire rope 711 passes. Motor 709 drives the take-up roller 710 to rotate, reeling in the steel wire rope 711 and pulling the left end of the lamp holder 707 upward, causing it to block the LED light at the bottom of the stepped groove 702 from illuminating the octagonal through-hole, simulating ray projection. Similarly, when the winding roller 710 releases the wire rope 711, under the counterweight action of the counterweight roller 708, the roller 2 706 rolls downward along the inclined guide rail 704, and the roller 1 705 rolls to the left along the horizontal guide rail 703, and the lamp holder 707 moves away from the bottom of the stepped groove 702.

[0055] See also Figure 12 The rotation drive member 800 includes two annular frames 801, which are fixedly mounted at the bottom ends of the frame 100. The cross-section of the annular frames 801 is in the shape of an "I". The lower half of the annular frames 801 is provided with a bracket 802. The top of the bracket 802 is an arc-shaped surface. The left and right edges of the top of the bracket 802 are provided with a limiting wheel 803. The limiting wheel 803 is inserted into the annular frames 801. Therefore, the bracket 802 supports the annular frames 801, and the limiting wheel 803 limits the annular frames 801, so that the frame 100 can stably rotate along the axis of the annular frames 801.

[0056] An annular seat 804 is fixedly mounted on the lower middle portion of the frame 100. A semi-geared ring 805 is fixedly mounted on the outer wall of the lower half of the annular seat 804. A second gear 806 meshes with the underside of the semi-geared ring 805, and a third motor 807 is fixedly mounted at the center of the second gear 806. Motor 807 drives the second gear 806, which in turn rotates the semi-geared ring 805 and the annular seat 804. This in turn rotates the frame 100, causing the regular octagonal opening formed by the sealing plate 506 to deflect. This allows radiation to pass through the regular octagonal opening and irradiate the tumor area, allowing the patient to be treated in various positions, including sitting, supine, prone, and side-lying.

[0057] The lifting treatment bed 900 includes a bed board 901 disposed in the middle of the annular seat 804, and the length of the bottom of the annular chain 306 is greater than the length of the bed board 901. Telescopic rods 902 are fixedly installed at the four corners of the bottom of the bed board 901, and a second hydraulic cylinder 903 is fixedly installed at the center of the bottom of the bed board 901. The bottom of the second hydraulic cylinder 903 is fixedly installed with an arched seat 904, and the annular seat 804 passes through the inside of the arched seat 904. By the telescopic movement of the output end of the second hydraulic cylinder 903, the bed board 901 is driven to lift, the distance between the patient and the frame 100 is adjusted, and the irradiated area of the ray on the patient is increased or decreased.

[0058] During use, the patient is in a sitting position, supine position, prone position, side-lying position, etc. on the bed board 901. The winding roller 710 is driven to rotate by the second motor 709, the steel wire rope 711 is wound, so that the first roller 705 rolls to the right along the horizontal guide rail 703, and the second roller 706 rolls upward along the inclined guide rail 704 until the first roller 705 rolls to the right end of the horizontal guide rail 703, and the lamp holder 707 is below the stepped groove 702, and the LED lamp is at the center of the stepped groove 702;

[0059] The first gear 510 is driven to rotate by the first motor 509, driving the enclosure ring 503 and the rotating ring 501 to rotate. The sealing plate 506 moves outward and deflects at the same time until the sealing plate 506 moves outward to the limit position, so that the area of the regular octagon through hole surrounded by the sealing plate 506 is the largest;

[0060] Then the connecting shaft 308 is driven to rotate by the driving motor, the first upper sprocket 303 or the second upper sprocket 304 rotates, so that the annular chain 306 moves, and thus the projection base 400 moves in the left-right direction, and the projection of the LED light passing through the regular octagon through hole moves in the left-right direction;

[0061] At the same time, the second gear 806 is driven to rotate by the third motor 807, driving the annular seat 804 and the semi-tooth ring 805 to rotate, and thus driving the frame 100 to deflect along the axis of the annular seat 804, so that the projection of the LED light passing through the regular octagon through hole deflects;

[0062] Thus, the projection of the LED light passing through the regular octagon through hole covers the tumor area of the patient. Then the first gear 510 is driven to rotate by the first motor 509, driving the rotating ring 501 to rotate, adjusting the area of the regular octagon through hole surrounded by the sealing plate 506, and thus adjusting the size of the projection area to adapt to the size of the tumor;

[0063] Finally, the winding roller 710 is driven to rotate by the second motor 709 to release the wire rope 711, so that the second roller 706 rolls downward along the inclined guide rail 704, and the first roller 705 rolls leftward along the horizontal guide rail 703, moving the lamp holder 707 away from the bottom of the stepped groove 702, and the rays output by the radiotherapy device can pass through the regular octagon through-hole and irradiate on the tumor.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tumor radiotherapy protection device, comprising a frame-shaped frame (100), and vertical frames (200) are welded to the tops of both ends of the frame-shaped frame (100), and it is characterized in that: Inside the frame (100) and the vertical frame (200), a transverse movement driving member (300) is provided. A projection base (400) is fixedly installed on the lower surface of the transverse movement driving member (300). Side shielding members (600) are provided on both the left and right sides of the projection base (400). An aperture adjusting member (500) is provided inside the projection base (400). A projection simulation member (700) is fixedly installed on the top of the projection base (400). A rotation driving member (800) is welded to the bottom of the frame (100), and a lifting treatment bed (900) is provided inside the rotation driving member (800).

2. The tumor radiotherapy protection device according to claim 1, wherein: The transverse movement driving member (300) includes two chain conveyors, and the two chain conveyors are distributed front and back; Each of the chain conveyors includes a lower sprocket one (301) rotatably connected to the inner side of the left end of the frame (100), a lower sprocket two (302) rotatably connected to the inner wall of the right end of the frame (100), an upper sprocket one (303) rotatably connected to the inner wall of the top end of one of the vertical frames (200), an upper sprocket two (304) rotatably connected to the inner wall of the top end of the other vertical frame (200). Two pressure wheels (305) are rotatably connected to the top of the frame (100), and the two pressure wheels (305) are distributed left and right. The lower sprocket one (301), the lower sprocket two (302), the upper sprocket one (303), and the upper sprocket two (304) are connected by an endless chain (306). The endless chain (306) is in an "inverted U" shape, and the pressure wheels (305) are attached to the inner sides of the two corners of the endless chain (306). A connecting shaft one (307) is fixedly installed between the two lower sprockets one (301) and between the two lower sprockets two (302). The connecting shaft one (307) is rotatably connected to the frame (100). A connecting shaft two (308) is fixedly installed between the two upper sprockets one (303) and between the two upper sprockets two (304). One of the connecting shafts two (308) is rotatably connected to the vertical frame (200), and a tensioning member is provided between the other connecting shaft two (308) and the vertical frame (200).

3. The tumor radiotherapy protection device according to claim 2, characterized in that: The endless chain (306) includes an outer U-shaped portion (3061) and an inner U-shaped portion (3062). The tops of the outer U-shaped portion (3061) and the inner U-shaped portion (3062) are connected to each other. The lower sprocket one (301) and the lower sprocket two (302) are respectively attached to the inner sides of the two corners of the outer U-shaped portion (3061). The pressure wheels (305) are attached to the inner sides of the corners of the inner U-shaped portion (3062). The upper sprocket one (303) and the upper sprocket two (304) are respectively attached to the inner sides of the joints at the tops of the outer U-shaped portion (3061) and the inner U-shaped portion (3062). The tensioning member includes slide rails (310) fixedly installed on the front and rear sides of the top end of the vertical frame (200). Avoidance grooves (309) are formed through the front and rear sides of the top end of the vertical frame (200). The second connecting shaft (308) passes through the avoidance groove (309). A sliding seat (311) is slidably connected in the slide rail (310). The second connecting shaft (308) is rotatably connected in the sliding seat (311). An arched plate (312) is fixedly installed between the two sliding seats (311). A first hydraulic cylinder (313) is fixedly installed at the bottom of the arched plate (312).

4. The tumor radiotherapy protection device according to claim 1, wherein: The projection base (400) includes a lower clamping plate (401) fixedly installed at the bottom of the annular chain (306). An upper clamping plate (402) is arranged above the lower clamping plate (401). Spacers (403) are fixedly installed between the four corners of the lower clamping plate (401) and the upper clamping plate (402). Projection holes (404) are formed through the centers of the lower clamping plate (401) and the upper clamping plate (402). A left lead sheet (405) is fixedly installed on the left side of the lower clamping plate (401). A right lead sheet (406) is fixedly installed on the right side of the lower clamping plate (401).

5. The tumor radiotherapy protection device according to claim 4, wherein: The aperture adjusting member (500) includes a rotating ring (501) rotatably connected to the top of the lower clamping plate (401). A regular polygon groove (502) is formed at the top of the rotating ring (501). A retaining ring (503) is fixedly installed at the top edge of the rotating ring (501). V-shaped grooves are arrayed on the outer wall of the retaining ring (503). The retaining ring (503) meshes with a first gear (510) through the V-shaped grooves. A first motor (509) is fixedly installed at the center of the first gear (510). A fixed ring (504) is attached to the top of the retaining ring (503). The fixed ring (504) is fixedly installed at the bottom of the upper clamping plate (402). The inner diameters of the rotating ring (501) and the regular polygon groove (502) are equal to the aperture of the projection hole (404). Inclined grooves (505) are arrayed on the fixed ring (504). The number of the inclined grooves (505) is equal to the number of the side lengths of the regular polygon groove (502). Sealing plates (506) are arrayed between the fixed ring (504) and the rotating ring (501). The number of the sealing plates (506) is equal to the number of the side lengths of the regular polygon groove (502). Sliders (507) are fixedly installed at the bottom corners of the sealing plates (506). The sliders (507) are slidably connected in the regular polygon groove (502). Slide columns (508) are fixedly installed at the top of the sealing plates (506). The slide columns (508) are slidably connected in the inclined grooves (505).

6. The tumor radiotherapy protection device according to claim 4, characterized in that: The side shielding member (600) includes sealing lead plates arrayed on the outer surface of the outer U-shaped part (3061). Each of the sealed lead plates includes a lead plate body (601), the lead plate body (601) is fixedly installed on the link plate of the annular chain (306), a lower extension (602) is integrally formed on the lower left half of the lead plate body (601), an upper extension (603) is integrally formed on the upper right half of the lead plate body (601), the thicknesses of the lower extension (602) and the upper extension (603) are both equal to half of the thickness of the lead plate body (601), the width of the lower extension (602) or the upper extension (603) is greater than half of the distance between two adjacent lead plate bodies (601), and the widths of the lower extension (602) and the upper extension (603) are both smaller than the distance between two adjacent lead plate bodies (601). The left lead sheet (405) is attached to the lower side of one of the upper extensions (603), and the right lead sheet (406) is attached to the upper side of one of the lower extensions (602).

7. The tumor radiotherapy protection device according to claim 1, characterized in that: The projection simulation member (700) includes a support frame (701) fixedly installed on the top of the projection base (400), and a stepped groove (702) is formed through the top of the support frame (701); Two horizontal guide rails (703) are fixedly installed on the top wall of the stepped groove (702), the two horizontal guide rails (703) are distributed front and back, an inclined guide rail (704) is arranged at the left end of each horizontal guide rail (703), a roller one (705) is arranged in the horizontal guide rail (703), a roller two (706) is arranged in the inclined guide rail (704), the two roller ones (705) and the two roller twos (706) are connected to a lamp holder (707), an LED lamp is arranged at the bottom of the lamp holder (707), and a lifting driving member is arranged on the left side of the lamp holder (707).

8. The tumor radiotherapy protection device according to claim 7, characterized in that: The lifting driving member includes a counterweight roller (708) fixedly installed between the two roller twos (706), a motor two (709) is fixedly installed in the upper left half of the support frame (701), a winding roller (710) is fixedly installed at the output end of the motor two (709), a steel wire rope (711) is wound on the winding roller (710), one end of the steel wire rope (711) far away from the winding roller (710) is fixedly installed at the top left end of the lamp holder (707), and a fixed pulley (712) is arranged on the top wall of the left side of the support frame (701), and the steel wire rope (711) passes through the top of the fixed pulley (712).

9. The tumor radiotherapy protection device according to claim 1, wherein: The rotation driving member (800) includes two annular frames (801), the two annular frames (801) are respectively fixedly installed at the bottom ends of both ends of the frame-shaped frame (100), the cross section of the annular frame (801) is in an "I" shape, a support seat (802) is arranged at the lower half of the annular frame (801), the top of the support seat (802) is an arc surface, and limiting wheels (803) are arranged in an array on the left and right side edges of the top of the support seat (802), and the limiting wheels (803) are inserted into the annular frame (801); A ring-shaped seat (804) is fixedly installed on the lower side of the middle part of the frame (100). A semi-toothed ring (805) is fixedly installed on the outer wall of the lower half of the ring-shaped seat (804). A second gear (806) is engaged with the lower side of the semi-toothed ring (805). A third motor (807) is fixedly installed at the center of the second gear (806).

10. The tumor radiotherapy protection device according to claim 9, characterized in that: The lifting treatment bed (900) includes a bed board (901) arranged in the middle of the ring-shaped seat (804). Telescopic rods (902) are fixedly installed at the four corners of the bottom of the bed board (901). A second hydraulic cylinder (903) is fixedly installed at the center of the bottom of the bed board (901). An arched seat (904) is fixedly installed at the bottom of the second hydraulic cylinder (903). The ring-shaped seat (804) passes through the inside of the arched seat (904).

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