Patient body position fixing device for radioexamination

Abstract

The invention relates to the technical field of medical instruments, in particular to a patient body position fixing device for radioscopy, which comprises a base and a bed board, the bed board is mounted at the upper end of the base, and a positioning mechanism is arranged at the outer end of the bed board. The positioning mechanism comprises a first double-head motor, a first linkage rod, a fixing plate, a driving wheel, a synchronous belt, a driven wheel, a connecting frame, a supporting plate and a positioning film. Through the arrangement of the positioning mechanism, a first double-head motor drives a connecting frame and a supporting plate to rotate, the body surface of a patient is covered with a positioning film through the elastic effect of the positioning film, the positioning film is attached to the body surface of the patient so as to adapt to patients of different figures, and the applicability of the device is improved; through the arrangement of a limiting mechanism, a second double-head motor is started to enable two groups of movable frames to relatively move along a second linkage rod, so that the movable frames on the two sides move towards the body surface of the patient, the two sides of a positioning film are driven to be attached to the body surface of the patient, gaps formed between included angles are avoided, and the fixing effect of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to a patient position fixing device for radiological examination. Background Art

[0002] The radiology department is a key auxiliary examination department in hospitals. In modern hospital development, it integrates examination, diagnosis, and treatment. Many clinical conditions require radiology equipment for definitive and auxiliary diagnosis. Radiology equipment typically includes conventional X-ray machines, computed radiography (CR), direct digital radiography (DR), computed tomography (CT), magnetic resonance imaging (MRI), and digital subtraction angiography (DSA).

[0003] Traditional equipment is not perfectly fixed during use. Any movement of the patient during radiotherapy may cause overall errors. It is impossible to fix patients of different body shapes, such as the legs or head. Therefore, we have proposed a patient position fixation device for radiological examinations to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a patient position fixation device for radiological examination to solve the problem raised in the above background technology that movement of the patient during radiotherapy may cause overall errors and cannot fix patients of different body shapes.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a patient position fixing device for radiological examination, comprising a base and a bed plate, wherein the bed plate is mounted on the upper end of the base, and a positioning mechanism is provided on the outer end of the bed plate, wherein the positioning mechanism comprises a first double-headed motor, a first connecting rod, a fixing plate, a driving pulley, a synchronous belt, a driven pulley, a connecting frame, a support plate, and a positioning film;

[0006] A first double-headed motor is fixedly installed inside the bed board, two groups of first connecting rods are provided on the left and right sides of the first double-headed motor, two groups of fixed plates are provided on the left and right sides of the bed board, a driving wheel is provided at the end of the first connecting rod, a synchronous belt is provided on the outside of the driving wheel, a driven wheel is provided on the other side of the synchronous belt, a connecting frame is provided on the inside of the driven wheel, a support plate is provided at the front end of the connecting frame, and a positioning film is provided on the inside of the connecting frame.

[0007] Preferably, a limiting mechanism is provided at the bottom of the support plate, and the limiting mechanism includes a fixed frame, a second double-headed motor, a second connecting rod and a movable frame. The bottom of the support plate is fixedly connected to the fixed frame, and the second double-headed motor is fixedly installed inside the fixed frame. Both ends of the second double-headed motor are respectively fixedly connected to the second connecting rod, and the other end of the second connecting rod is rotatably connected to the connecting frame through a bearing. The surfaces of the two groups of the second connecting rods are movably connected to the movable frame, and the left and right ends of the positioning film are fixedly connected to the inner wall of the movable frame.

[0008] Preferably, the first double-headed motor is fixedly installed inside the bed board, one end of the two groups of the first connecting rods are rotatably connected to the fixed plate, the other end of the first connecting rod is fixedly connected to the output end of the first double-headed motor, the outer ends of the two groups of the driven wheels are rotatably connected to the fixed plate, the other end of the driven wheel is fixedly connected to the connecting frame, the synchronous belt is movably sleeved on the surface of the driving wheel and the driven wheel, and the inner wall is provided with a tooth groove adapted to the driving wheel and the driven wheel, the rear end of the support plate is fixedly connected to the two groups of connecting frames, the positioning membrane is made of elastic material, and holes are evenly opened on the surface.

[0009] Preferably, a stabilizing assembly is provided between the connecting frame and the movable frame, and the stabilizing assembly includes a first slide groove, a connecting rod and a first limit block. Seven groups of first slide grooves are equidistantly provided inside the connecting frame. The first slide groove is movably connected to the connecting rod inside. The inner end of the connecting rod is fixedly connected to the outer surface of the movable frame, and the outer end of the connecting rod is fixedly connected to the first limit block. The diameter of the first limit block is adapted to the inner diameter of the first slide groove.

[0010] Preferably, a sliding assembly is provided at the bottom of the movable frame, and the sliding assembly includes a slider, a positioning groove and a second slide groove. The bottoms of the two groups of movable frames are respectively fixedly connected with two groups of sliders. Four groups of positioning grooves are provided on the surface of the bed board. A second slide groove is provided between each of the positioning grooves, and the diameter of the second slide groove is adapted to the slider.

[0011] Preferably, two groups of fixing components are symmetrically arranged on the surface of the support plate, and the fixing components include a movable groove, a movable rod, a second limit block, a clamping slot, a return spring and a protective film. The internal array of the support plate is provided with a movable groove, and the movable groove is movably connected to the movable rod inside, and the outer surface of the movable rod is fixedly connected to the second limit block. The surface of the support plate is provided with a clamping slot at a position corresponding to the movable groove, the top of the movable rod is hemispherical, and the outer surface of the movable rod is sleeved with a return spring, and the two ends of the return spring are respectively against the movable rod and the inner wall of the clamping slot, and the top surface of the movable rod is fixedly connected to the protective film.

[0012] Preferably, a positioning assembly is provided on the surface of the bed board, and the positioning assembly includes a support frame, an adjusting rod and a positioning ring. The support frame is installed on the surface of the bed board, the adjusting rod is threadedly connected to the center position of the support frame, and the bottom of the adjusting rod is rotatably connected to the positioning ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention adopts the setting of the positioning mechanism, drives the connecting frame and the support plate to rotate by the first double-headed motor, and covers the positioning film on the patient's body surface through the elastic action of the positioning film, so that the positioning film fits the patient's body surface, thereby adapting to patients of different body shapes and improving the applicability of the device.

[0015] 2. The present invention sets a limiting mechanism to start the second double-headed motor to move the two sets of movable frames relative to each other along the second connecting rod, so that the movable frames on both sides move toward the patient's body surface, driving the two sides of the positioning membrane to fit the patient's body surface, avoiding the formation of gaps between the angles, and improving the fixing effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic front view of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure rotation of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the positioning mechanism of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the limiting mechanism of the present invention;

[0021] Figure 5 This is a structural diagram of the positioning component of the present invention;

[0022] Figure 6 For the present invention Figure 4 A partial enlarged schematic diagram;

[0023] Figure 7 For the present invention Figure 5 A partial enlarged schematic diagram of B in the middle;

[0024] Figure 8 For the present invention Figure 5A partial enlarged schematic diagram of C in the middle.

[0025] In the figure: 1. base; 2. bed board; 3. positioning mechanism; 301. first double-headed motor; 302. first connecting rod; 303. fixed plate; 304. driving wheel; 305. synchronous belt; 306. driven wheel; 307. connecting frame; 308. support plate; 309. positioning film; 4. limiting mechanism; 401. fixed frame; 402. second double-headed motor; 403. second connecting rod; 404. movable frame; 5. stabilizing component; 51. first slide groove; 52. connecting rod; 53. first limiting block; 6. sliding component; 61. slider; 62. positioning groove; 63. second slide groove; 7. fixing component; 71. movable groove; 72. movable rod; 73. second limiting block; 74. slot; 75. reset spring; 76. protective film; 8. positioning component; 81. support frame; 82. adjusting rod; 83. positioning ring. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-8 The present invention provides an embodiment of a patient position fixing device for radiological examination, comprising a base 1 and a bed board 2. The bed board 2 is mounted on the upper end of the base 1, and a positioning mechanism 3 is provided on the outer end of the bed board 2. The positioning mechanism 3 comprises a first double-headed motor 301, a first connecting rod 302, a fixing plate 303, a driving pulley 304, a synchronous belt 305, a driven pulley 306, a connecting frame 307, a supporting plate 308, and a positioning film 309.

[0028] A first double-headed motor 301 is fixedly installed inside the bed board 2. Two sets of first connecting rods 302 are provided on the left and right sides of the first double-headed motor 301. Two sets of fixing plates 303 are provided on the left and right sides of the bed board 2. A driving wheel 304 is provided at the end of the first connecting rod 302. A synchronous belt 305 is provided on the outside of the driving wheel 304. A driven wheel 306 is provided on the other side of the synchronous belt 305. A connecting frame 307 is provided on the inside of the driven wheel 306. A supporting plate 308 is provided at the front end of the connecting frame 307. A positioning film 309 is provided on the inside of the connecting frame 307.

[0029] The device solves the problem that movement of the patient during radiotherapy may cause overall errors and cannot fix patients of different body shapes by setting the positioning mechanism 3.

[0030] Furthermore, a limiting mechanism 4 is provided at the bottom of the support plate 308. The limiting mechanism 4 includes a fixed frame 401, a second double-headed motor 402, a second connecting rod 403 and a movable frame 404. The bottom of the support plate 308 is fixedly connected to the fixed frame 401. The second double-headed motor 402 is fixedly installed inside the fixed frame 401. The two ends of the second double-headed motor 402 are respectively fixedly connected to the second connecting rod 403. The other end of the second connecting rod 403 is rotatably connected to the connecting frame 307 through a bearing. The surfaces of the two groups of second connecting rods 403 are movably connected to the movable frame 404. The left and right ends of the positioning film 309 are fixedly connected to the inner wall of the movable frame 404. Figure 4 As shown, the structure is used to drive the two sets of second connecting rods 403 to rotate by starting the second double-headed motor 402, and the two sets of movable frames 404 are moved relative to each other along the second connecting rods 403 through the threads on the surfaces of the second connecting rods 403, so that the movable frames 404 drive the positioning membrane 309 to fix the two sides of the patient's body surface, avoiding gaps on both sides and causing limb displacement.

[0031] Furthermore, the first double-headed motor 301 is fixedly installed inside the bed board 2, one end of the two sets of first connecting rods 302 are rotatably connected to the fixed plate 303, the other end of the first connecting rod 302 is fixedly connected to the output end of the first double-headed motor 301, the outer ends of the two sets of driven wheels 306 are rotatably connected to the fixed plate 303, the other end of the driven wheel 306 is fixedly connected to the connecting frame 307, the synchronous belt 305 is movably sleeved on the surface of the driving wheel 304 and the driven wheel 306, and the inner wall is provided with a tooth groove adapted to the driving wheel 304 and the driven wheel 306, the rear end of the support plate 308 is fixedly connected to the two sets of connecting frames 307, the positioning film 309 is made of elastic material, and holes are evenly opened on the surface to improve the comfort of the patient. Figure 3 As shown, the structure is used to start the first double-headed motor 301 to drive the two sets of first connecting rods 302 and the driving wheel 304 to rotate. Under the action of the synchronous belt 305, the driven wheel 306 rotates to rotate the connecting frame 307 and the support plate 308. When the connecting frame 307 rotates, the positioning film 309 on the inner side of the connecting frame 307 contacts the patient's body surface. As the connecting frame 307 rotates and fits the surface of the bed board 2, the positioning film 309 is closely fitted to the patient's body surface to fix the patient's body surface.

[0032] Furthermore, a stabilizing assembly 5 is provided between the connecting frame 307 and the movable frame 404. The stabilizing assembly 5 includes a first chute 51, a connecting rod 52, and a first stop block 53. Seven groups of first chute 51 are evenly spaced inside the connecting frame 307. The connecting rod 52 is movably connected to the inside of the first chute 51. The inner end of the connecting rod 52 is fixedly connected to the outer surface of the movable frame 404. The outer end of the connecting rod 52 is fixedly connected to the first stop block 53. The diameter of the first stop block 53 is adapted to the inner diameter of the first chute 51. Figure 6 As shown, this structure is used to improve the stability of the device by pulling the connecting rod 52 and the first limiting block 53 to move along the first sliding groove 51 when the two groups of movable frames 404 move toward the center.

[0033] Furthermore, a sliding assembly 6 is provided at the bottom of the movable frame 404. The sliding assembly 6 includes a slider 61, a positioning groove 62, and a second slide groove 63. The bottoms of the two sets of movable frames 404 are fixedly connected with two sets of sliders 61. The cross section of the slider 61 is T-shaped and the bottom is circular. Four sets of positioning grooves 62 are provided on the surface of the bed plate 2. A second slide groove 63 is provided between each pair of the positioning grooves 62. The diameter of the second slide groove 63 is adapted to the slider 61. Figure 7 As shown, this structure is used to insert the slider 61 at the bottom of the movable frame 404 into the positioning groove 62 when the connecting frame 307 rotates, so as to position the movable frame 404. As the movable frame 404 moves, the slider 61 moves toward the center position along the second slide groove 63, thereby ensuring the stability of the movable frame 404 during movement.

[0034] Furthermore, two groups of fixing components 7 are symmetrically arranged on the surface of the support plate 308. The fixing components 7 include a movable groove 71, a movable rod 72, a second limit block 73, a clamping groove 74, a return spring 75 and a protective film 76. The internal array of the support plate 308 is provided with a movable groove 71. The movable rod 72 is movably connected to the inside of the movable groove 71. The outer surface of the movable rod 72 is fixedly connected to the second limit block 73. The surface of the support plate 308 is provided with a clamping groove 74 at a position corresponding to the movable groove 71. The top of the movable rod 72 is hemispherical. The outer surface of the movable rod 72 is sleeved with a return spring 75. The two ends of the return spring 75 are respectively against the movable rod 72 and the inner wall of the clamping groove 74. The top surface of the movable rod 72 is fixedly connected to the protective film 76. Figure 8 As shown, when the support plate 308 is rotated, the protective film 76 on the surface of the support plate 308 contacts the patient's lower limbs, and the limbs push the movable rod 72 at the corresponding position, squeezing the movable rod 72 downward along the movable groove 71, causing the reset spring 75 to deform, and the movable rod 72 that is not squeezed remains in an upright state, thereby forming a groove that conforms to the shape of the patient's lower limbs, thereby fixing the lower limbs. After the inspection is completed, the support plate 308 rotates in the opposite direction, and the movable rod 72 is restored to its original position under the elastic action of the reset spring 75.

[0035] Furthermore, a positioning assembly 8 is provided on the surface of the bed board 2. The positioning assembly 8 includes a support frame 81, an adjustment rod 82 and a positioning ring 83. The support frame 81 is installed on the surface of the bed board 2. The adjustment rod 82 is threadedly connected to the center of the support frame 81. The bottom of the adjustment rod 82 is rotatably connected to the positioning ring 83. The positioning ring 83 is semicircular and has a sponge pad on the inner wall. Figure 5As shown, the structure is used for the patient to lie on the bed board 2, place the head on the center position of the support frame 81, and rotate the adjustment rod 82 to fit the positioning ring 83 on the patient's head to fix the patient's head.

[0036] Working principle: When used, Figure 1 and Figure 3 As shown, the patient lies on the bed board 2, and then the first double-headed motor 301 is started to drive the two sets of first connecting rods 302 and the driving wheel 304 to rotate. Under the action of the synchronous belt 305, the driven wheel 306 rotates to rotate the connecting frame 307 and the support plate 308. When the connecting frame 307 rotates, the positioning film 309 on the inner side of the connecting frame 307 contacts the patient's body surface. As the connecting frame 307 rotates and fits the surface of the bed board 2, the positioning film 309 is tightly fitted to the upper body surface of the patient, as shown in FIG. Figure 4 and Figure 7 As shown, when the connecting frame 307 rotates, the slider 61 at the bottom of the movable frame 404 is inserted into the positioning groove 62 to position the movable frame 404. The second double-headed motor 402 is started to drive the two sets of second connecting rods 403 to rotate. Through the threads on the surface of the second connecting rods 403, the two sets of movable frames 404 move relative to each other along the second connecting rods 403. As the movable frame 404 moves, the slider 61 moves along the second sliding groove 63 to the center position. At the same time, as shown in FIG. Figure 6 As shown, the movable frame 404 pulls the connecting rod 52 and the first limiting block 53 to move along the first sliding groove 51, so that the movable frame 404 drives the positioning film 309 to fix the two sides of the patient's body surface, as shown in FIG. Figure 2 and Figure 8 As shown, when the support plate 308 rotates, the protective film 76 on the surface of the support plate 308 contacts the patient's lower limbs, and the limbs push the movable rod 72 at the corresponding position, squeezing the movable rod 72 downward along the movable groove 71, causing the reset spring 75 to deform, and the movable rod 72 that is not squeezed remains in an upright state, thereby forming a groove that conforms to the shape of the patient's lower limbs, thereby fixing the lower limbs. Figure 5 As shown, the patient's head is placed at the center of the support frame 81, and the rotating adjustment rod 82 fits the positioning ring 83 on the patient's head to fix the patient's head. After the examination is completed, the support plate 308 rotates in the opposite direction, and under the elastic action of the reset spring 75, the movable rod 72 is restored to its original position. The above is the entire working principle of the present invention.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A patient position fixing device for radiological examination, comprising a base (1) and a bed board (2), characterized in that: A bed board (2) is mounted on the upper end of the base (1), and a positioning mechanism (3) is provided on the outer end of the bed board (2), wherein the positioning mechanism (3) comprises a first double-headed motor (301), a first connecting rod (302), a fixing plate (303), a driving wheel (304), a synchronous belt (305), a driven wheel (306), a connecting frame (307), a supporting plate (308), and a positioning film (309); A first double-headed motor (301) is fixedly installed inside the bed board (2), two groups of first connecting rods (302) are provided on the left and right sides of the first double-headed motor (301), two groups of fixed plates (303) are provided on the left and right sides of the bed board (2), a driving wheel (304) is provided at the end of the first connecting rod (302), a synchronous belt (305) is provided on the outside of the driving wheel (304), a driven wheel (306) is provided on the other side of the synchronous belt (305), a connecting frame (307) is provided on the inside of the driven wheel (306), a support plate (308) is provided at the front end of the connecting frame (307), and a positioning film (309) is provided on the inside of the connecting frame (307).

2. The patient position fixing device for radiological examination according to claim 1, characterized in that: A limiting mechanism (4) is provided at the bottom of the support plate (308), and the limiting mechanism (4) comprises a fixed frame (401), a second double-headed motor (402), a second connecting rod (403) and a movable frame (404). The bottom of the support plate (308) is fixedly connected to the fixed frame (401), the second double-headed motor (402) is fixedly installed inside the fixed frame (401), the two ends of the second double-headed motor (402) are respectively fixedly connected to the second connecting rod (403), the other end of the second connecting rod (403) is rotatably connected to the connecting frame (307) through a bearing, the surfaces of the two groups of the second connecting rods (403) are movably connected to the movable frame (404), and the left and right ends of the positioning film (309) are fixedly connected to the inner wall of the movable frame (404).

3. The patient position fixing device for radiological examination according to claim 1, characterized in that: The first double-headed motor (301) is fixedly installed inside the bed board (2), one end of the two groups of the first connecting rods (302) are rotatably connected to the fixed plate (303), the other end of the first connecting rod (302) is fixedly connected to the output end of the first double-headed motor (301), the outer ends of the two groups of the driven wheels (306) are rotatably connected to the fixed plate (303), the other end of the driven wheels (306) is fixedly connected to the connecting frame (307), the synchronous belt (305) is movably sleeved on the surface of the driving wheel (304) and the driven wheel (306), and the inner wall is provided with a tooth groove adapted to the driving wheel (304) and the driven wheel (306), the rear end of the support plate (308) is fixedly connected to the two groups of connecting frames (307), and the positioning film (309) is made of elastic material and has holes evenly opened on the surface.

4. The patient position fixing device for radiological examination according to claim 1, characterized in that: A stabilizing assembly (5) is provided between the connecting frame (307) and the movable frame (404), and the stabilizing assembly (5) includes a first slide groove (51), a connecting rod (52) and a first limit block (53). Seven groups of first slide grooves (51) are equidistantly provided inside the connecting frame (307), and the first slide grooves (51) are movably connected to the connecting rod (52) inside. The inner end of the connecting rod (52) is fixedly connected to the outer surface of the movable frame (404), and the outer end of the connecting rod (52) is fixedly connected to the first limit block (53). The diameter of the first limit block (53) is adapted to the inner diameter of the first slide groove (51).

5. The patient position fixing device for radiological examination according to claim 2, characterized in that: A sliding assembly (6) is provided at the bottom of the movable frame (404), and the sliding assembly (6) includes a slider (61), a positioning groove (62) and a second slide groove (63). The bottoms of the two groups of movable frames (404) are respectively fixedly connected with two groups of sliders (61). The surface of the bed board (2) is provided with four groups of positioning grooves (62). A second slide groove (63) is provided between each of the positioning grooves (62). The diameter of the second slide groove (63) is adapted to the slider (61).

6. The patient position fixing device for radiological examination according to claim 1, characterized in that: Two groups of fixed components (7) are symmetrically arranged on the surface of the support plate (308), and the fixed component (7) includes a movable groove (71), a movable rod (72), a second limit block (73), a clamping groove (74), a return spring (75) and a protective film (76). The internal array of the support plate (308) is provided with a movable groove (71), the interior of the movable groove (71) is movably connected with the movable rod (72), the outer surface of the movable rod (72) is fixedly connected with the second limit block (73), the surface of the support plate (308) is provided with a clamping groove (74) at a position corresponding to the movable groove (71), the top of the movable rod (72) is hemispherical, the outer surface of the movable rod (72) is sleeved with a return spring (75), the two ends of the return spring (75) are respectively against the inner wall of the movable rod (72) and the clamping groove (74), and the top surface of the movable rod (72) is fixedly connected with the protective film (76).

7. The patient position fixing device for radiological examination according to claim 1, characterized in that: A positioning assembly (8) is provided on the surface of the bed board (2), and the positioning assembly (8) comprises a support frame (81), an adjusting rod (82) and a positioning ring (83). The support frame (81) is installed on the surface of the bed board (2), the adjusting rod (82) is threadedly connected to the center position of the support frame (81), and the bottom of the adjusting rod (82) is rotatably connected to the positioning ring (83).

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