Body position placing and fixing device for radiography of lower limb radiography

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to a body position placing and fixing device for lower limb radiography, which comprises two lower limb plates with arc-shaped sections and a connecting rod, and a connecting mechanism for connecting the lower limb plates and the connecting rod is arranged between the lower limb plates and the connecting rod; the connecting mechanism is rotationally connected with the lower limb plates, so that the lower limb plates can swing in the horizontal direction, and meanwhile, the connecting mechanism can enable the lower limb plates to rotate around the central axis in the length direction of the lower limb plates, so that the side edges of the two lower limb plates are attached; the front edge of the lower limb plate is connected with a plurality of length-adjustable fixing straps, and the back edge of the lower limb plate is provided with suede surfaces corresponding to the fixing straps in number. A plurality of hook-and-loop fasteners are arranged on the edges of the two lower limb plates, and the hook-and-loop fasteners of the two lower limb plates correspond to the fixing belts in position. The two lower limb plates of the device can position and fix the two legs of a patient respectively, and the two lower limb plates can be combined for use to position and fix the single leg of the patient; and the practicability is very high.

Description

Technical Field

[0001] The invention patent relates to the technical field of medical auxiliary equipment, and specifically, to a body positioning and fixing device for lower limb radiographic examination and angiography. Background Art

[0002] In orthopedics, patients with fractures, bone cracks, joint dislocations, etc. often need to be examined through radiography. Among them, X-rays and CT are the preferred examination methods. For patients with fractures or joint dislocations of the upper limbs, the patients themselves or with the assistance of medical staff can place the part to be examined in the examination area very well, but patients with fractures or joint dislocations of the lower limbs are often inconvenient to move. During the radiological examination, although the part to be examined is placed in the imaging position with the assistance of medical staff, the patient's lower limbs will be placed inaccurately due to the severe pain in the part to be examined, resulting in poor imaging results.

[0003] In the prior art, many devices for assisting lower limb fixation have been designed to address the situation where the patient's lower limb position is inaccurate during radiological examination. For example, a lower limb radiography position fixation device disclosed in a Chinese utility model patent (CN211326536U) has two lower limb boards installed on one side of the buttocks board, and the lower limb boards can swing along the horizontal plane. When in use, the device is placed on the examination bed, a pillow is placed under the upper limb trunk of the subject, the buttocks are placed on the buttocks board, and the left and right legs are placed on the lower limb boards. The restraint belt binds the subject's limbs to the lower limb boards and fixes them with Velcro. The lower limbs of the patient to be tested are moved by swinging the position of the lower limb board. Another example is a lower limb radiotherapy fixation frame disclosed in a Chinese utility model patent (CN213077245U), which inserts the plug-in assembly into different ring grooves according to the thickness of the patient's legs, thereby fixing the patient's legs, and then moves the entire device to fix the patient's lower limbs.

[0004] Of the two devices mentioned above, the fixing device with publication number CN211326536U is mainly used to fix the patient's legs. However, if the patient only needs to fix the position of one leg, another lower limb board placed on the examination bed will hinder the patient's positioning. The fixing frame with publication number CN213077245U can only fix the position of a single leg. If both legs of the patient need to undergo a radiological examination, it is necessary to place another such fixing frame on the examination bed. In this way, medical staff need to prepare at least two such fixing frames, which increases the cost of use. Therefore, in response to the above technical problems, the applicant has invented a body positioning fixing device that can arbitrarily switch between single-leg positioning and double-leg positioning. Summary of the invention

[0005] The purpose of the present invention is to provide a body position fixing device for lower limb radiographic examination and angiography, wherein two lower limb boards of the device can respectively position and fix both legs of a patient, and the two lower limb boards can also be used in combination to position and fix a single leg of a patient; the device has strong practicality.

[0006] The present invention is implemented as follows: a body position fixing device for lower limb radiographic examination includes two lower limb boards with arc-shaped cross-sections and a connecting rod, wherein a connecting mechanism for connecting the lower limb boards and the connecting rod is provided between the lower limb boards and the connecting rod; the connecting mechanism is rotatably connected to the lower limb boards, so that the lower limb boards can swing in a horizontal direction, and at the same time, the connecting mechanism can rotate the lower limb boards around the central axis in the length direction thereof, so that the side edges of the two lower limb boards fit together;

[0007] A plurality of fixing belts with adjustable lengths are connected to the front edge of the lower limb plate, and a number of suede surfaces corresponding to the number of the fixing belts are arranged at the back edge of the lower limb plate.

[0008] Furthermore, it also includes two heel supports, which are located at one end of the lower limb plate.

[0009] Furthermore, the connecting rod is horizontally arranged directly below the two lower limb plates; an arc-shaped plate is installed on the back of the lower limb plate along the arc length direction of its cross section; a slide groove with an open top is opened in the connecting rod;

[0010] The connecting mechanism includes a slider 1 and a limit block with a U-shaped cross-section. The slider 1 is slidably installed in the slide groove 1, and the limit block is rotatably installed on the top of the slider 1. A plurality of through holes of equal arc length are opened on the arc plate, and a through hole of the same size as that on the arc plate is also opened on the side wall of the limit block; the fixing device also includes a fixing rod, which can pass through the through holes on the arc plate and the limit block to fix the lower limb plate.

[0011] Furthermore, the heel support is connected to the end of the lower limb plate.

[0012] Furthermore, a connecting rod is arranged directly below the two heel supports; a side cavity with a side opening is opened in the connecting rod, and a connecting mechanism is arranged in the side cavity; a second slide groove extending along the length of the connecting rod is opened at the top of the connecting rod; a rotating mechanism is slidably arranged in the second slide groove, and the rotating mechanism is used to adjust the angle of internal and external rotation of the heel support;

[0013] The connecting mechanism includes a sleeve, a rotating rod, two groups of limiting devices, a cylindrical barrel, a rotating rod and a piston; the end of the rotating rod is fixedly connected to the end of the lower limb plate; the sleeve is sleeved on the rotating rod, and the rotating rod is rotatably connected to the inner wall of the sleeve; one end of the sleeve is located in the side cavity; a sealed cavity is opened inside the end of the sleeve close to the side cavity, one end of the two groups of limiting devices are located in the sealed cavity, and the other ends are respectively in contact with the rotating rod and the inner wall of the connecting rod; a through groove is provided at the bottom of the connecting rod along its length direction, one end of the cylindrical barrel is connected to the sealed cavity, and the other end passes through the through groove and is located outside the connecting rod; the piston seal is slidably arranged in the cylindrical barrel, the end of the rotating rod is connected to the piston, and the side is also threadedly connected to the inner wall of the cylindrical barrel.

[0014] Furthermore, the rotating mechanism includes a slider 2, a limit plate, a rotating plate, a push rod and a knob; the slider 2 is slidably arranged in the slide groove 2, and a cavity is opened in the slider 2; the rotating plate and the slider 2 are rotatably connected, and the end of the rotating plate is fixedly connected to the heel support; one end of the push rod and the limit plate are both located in the cavity, the other end of the push rod is located outside the slider 2 and fixedly connected to the knob, and the side wall is threadedly connected to the slider 2; the limit plate is in contact with the rotating plate.

[0015] Furthermore, a plurality of Velcro strips are provided at the edges of the two lower limb plates, and the Velcro strips of the two lower limb plates correspond to the positions of the fixing belts respectively, and the Velcro strips can be adhered to the corresponding fixing belts.

[0016] Furthermore, the fixing straps on the two lower limb panels are arranged in opposite positions.

[0017] Furthermore, sponge pads are attached to both lower limb plates and the heel support.

[0018] Furthermore, the width of the two lower limb plates at one end close to the heel support is smaller than the width at the other end away from the heel support.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Set the two lower limb boards to have arc-shaped cross-sections. Insert the arc-shaped boards of the lower limb boards into the grooves of the limit blocks. At the same time, holes of the same size are opened on the arc-shaped boards and the limit blocks. The rotation angle of the lower limb boards is fixed by passing the fixing rods through the holes. When it is necessary to examine and image a single lower limb of the patient, it is only necessary to rotate the lower limb boards and fit their edges to form a U-shaped cross-section to fix the position of the patient's single leg. This not only improves the scope of application of the device, but also makes full use of the two lower limb boards to avoid the lower limb boards hindering the patient's positioning when examining and imaging a single lower limb of the patient.

[0021] 2. Connect the ends of the two lower limb boards to the rotating rod of the connecting mechanism. The rotating rod can allow the lower limb boards to rotate around its axis. At the same time, velvet is provided at the back of the two lower limb boards corresponding to the fixing belts. In this way, the two lower limb boards can be combined into a structure with a U-shaped cross-section to achieve the positioning and fixing of a single leg, and the lower limb boards can be rotated 180° around the axis of the rotating rod. With the sticking effect of the fixing belt and the velvet, the effect of clamping and fixing the patient's lower limbs can be achieved.

[0022] 3. A sealing chamber is provided in the sleeve, and a cylindrical cylinder body connected to the sealing chamber is provided at the bottom of the sleeve. Limiting devices which can respectively contact the inner wall of the rotating rod and the connecting rod are provided on both sides of the sealing chamber. In addition, a piston is provided inside the cylindrical cylinder body, and the piston is fixedly connected to the end of the rotating rod; in this way, by rotating the rotating rod, the piston squeezes the inner space of the sealing chamber, and under the action of the fluid, the two limiting devices can be closely contacted with the rotating rod and the inner wall of the connecting rod at the same time, and the rotation angle of the lower limb plate and the horizontal position are fixed, which is convenient for operation;

[0023] 4. The rotating plate connected to the heel support is rotatably connected to the slider 2, the limit plate can contact the rotating plate, the limit plate and one end of the push rod are both located in the cavity, and the push rod and the slider 2 are connected by a thread. In this way, the push rod compresses the internal space of the cavity, allowing the fluid to push the limit plate, so that the limit plate and the rotating plate are in contact, so that the internal and external rotation angles of the heel support can be adjusted and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of a body position fixing device for lower limb radiographic examination and angiography provided by Example 1 of the present invention;

[0025] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0026] Figure 3 is a cross-sectional view of two lower limb plates after rotation when positioning and fixing a single leg of a patient in Example 1 of the present invention;

[0027] Figure 4 is a top view of the connecting rod in Example 1 of the present invention;

[0028] Figure 5 It is a schematic diagram of the binding method of the fixing belt after the lower limb plate is assembled in Example 1 of the present invention;

[0029] Figure 6 It is a top view of a body position fixing device for lower limb radiographic examination and angiography provided by Example 2 of the present invention;

[0030] Figure 7 is a bottom view of the lower limb plate and the connecting rod in Embodiment 2 of the present invention;

[0031] Figure 8 is a top cross-sectional view of the lower limb plate and the connecting rod in Example 2 of the present invention;

[0032] Fig. 9 yes Figure 8 The enlarged view of point A in the middle;

[0033] Fig.10 is a schematic diagram of the connection between the heel support and the connecting rod in Embodiment 2 of the present invention;

[0034] Fig.11 yes Fig.10 The enlarged view of point A in the middle;

[0035] Fig.12 is a top view of the lower limb plate and the connecting rod in Example 3 of the present invention;

[0036] Fig.13 It is a schematic diagram of the connection between two lower limb plates when performing radiography on a single leg of a patient in Example 3 of the present invention.

[0037] Reference numerals in the above drawings:

[0038] 1. Lower limb plate; 2. Heel support; 3. Sponge pad; 4. Connecting rod; 5. Velcro; 6. Fixing belt; 7. Slide groove one; 8. Slider one; 9. Through hole; 10. Arc plate; 11. Limit block; 12. Fixed rod; 13. Suede; 14. Through groove; 15. Sleeve; 16. Rotating rod; 17. Rotating rod; 18. Side cavity; 19. Resistance plate; 20. Piston; 21. Sliding rod; 22. Cylindrical cylinder; 23. Sealing cavity; 24. Knob; 25. Slider two; 26. Cavity; 27. Limit plate; 28. Rotating plate; 29. ​​Push rod; 30. Slide groove two. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0041] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0042] Reference Figure 1-13 The figure shows a preferred embodiment of the present invention.

[0043] Embodiment 1: A body positioning and fixing device for lower limb radiographic examination and angiography, comprising two lower limb boards 1 with arc-shaped cross-sections and a connecting rod 4. In this embodiment, the connecting rod 4 is installed directly below the two lower limb boards 1. When in use, the connecting rod 4 is placed on the examination bed. In order to allow the lower limb board 1 to fit well with the patient's lower limbs, a sponge pad 3 is attached to the concave surface of the lower limb board 1. A slide groove 7 with an open top is opened in the connecting rod 4 along its length, and a connecting mechanism is installed between the lower limb board 1 and the connecting rod 4 to connect them;

[0044] In this embodiment, Figure 2 and Figure 4 As shown, the connection mechanism is mainly composed of a slider 8 and a limit block 11 with a U-shaped side. The slider 8 is slidably installed in the slide groove 7 of the cross bar, so that the distance between the two lower limb plates 1 can be adjusted; the bottom of the limit block 11 is inserted into the slider 8, and the bottom of the limit block 11 is raised, so that the limit block 11 can be rotated along the horizontal plane, thereby adjusting the horizontal swing angle of the arc plate 10. Figure 4 , the side of the limit block 11 is U-shaped, and a through hole 9 is opened on the two side walls of the limit block 11. The cross-section of the lower limb board 1 is an arc shape, and an arc plate 10 is fixedly installed on the bottom surface of the lower limb board 1. A plurality of through holes 9 of equal arc length are opened on the arc plate 10, and the through hole 9 is the same size as the through hole 9 on the limit block 11. In order to be able to fix the angle of the lower limb board 1, the present embodiment also includes a fixing rod 12 that matches the size of the through hole 9. When the through hole 9 on the arc plate 10 corresponds to the through hole 9 on the limit block 11, the fixing rod 12 is passed through the through hole 9 to complete the fixation. In order to prevent the lower limb board 1 from rotating, the inner walls of the through hole 9 on the limit block 11 and the through hole 9 on the arc plate 10 are both threaded, and the side walls of the fixing rod 12 are also threaded. When they correspond, the fixing rod 12 rotates into the through hole 9 to complete the fixation of the lower limb board 1. If only a single lower limb of the patient needs to be examined, the lower limb board 1 is rotated to such a position. Figure 3The form shown forms a lower limb board 1 with an overall U-shaped cross-section, and the patient can place the lower limbs to be examined on the two lower limb boards 1.

[0045] In this embodiment, in order to conform to ergonomic design, the cross-sectional width of the distal end of the lower limb board 1 is smaller than the cross-sectional width of the proximal end. When fixing a single leg, the lower limb board 1 needs to be rotated around the limit block 11 so that its sides fit together.

[0046] In this embodiment, in order to fix the patient's lower limbs, two length-adjustable fixing straps 6 and Velcro 5 are provided at the side of the lower limb board 1. Figure 1 At the same time, a velvet surface 13 is provided on the back of the lower limb board 1, and the fixing belt 6 is an adhesive surface. When the two lower limbs of the patient need to be positioned and fixed separately, the fixing belt 6 bypasses the lower limbs of the patient and is directly tied to the back velvet surface 13 of the same lower limb board 1 to achieve the fixation of the lower limbs. If only one lower limb of the patient needs to be positioned and fixed, such as Figure 5 In the form of, the fixing belt 6 is adjusted to a good length and then pasted on the Velcro 5 to achieve fixation.

[0047] In order to solve the problem of inaccurate radiography due to internal and external rotation of the patient's lower limbs, the present embodiment further provides a heel support 2, the heel of which is inserted into the lower limb board 1 through a rod body and connected and fixed by means of a snap (this is the prior art, not marked in the figure). In the present embodiment, the lower limb board 1 is provided with a plurality of grooves (not marked in the figure) at the end position close to the heel support 2 into which the rod body of the heel support 2 can be inserted, and the plurality of grooves are distributed along the arc direction thereof. If only a single lower limb of the patient needs to be fixed, the two lower limb boards 1 are combined into a U-shaped knot in cross section, and the heel support 2 is inserted into the groove near the bottom and snapped on.

[0048] Working principle: When it is necessary to fix the patient's two lower limbs, place the two lower limbs on the lower limb board 1 respectively, adjust the spacing and swing angle between the lower limb boards 1, and then tie the fixing belt 6 to the corresponding velvet surface 13 to achieve the fixation. If only a single lower limb needs to be fixed, rotate and remove the fixing rod 12, then rotate the lower limb board 1, so that the through hole 9 of the arc plate 10 closest to the other lower limb board 1 is aligned with the through hole 9 on the limit block 11, and then insert the fixing rod 12 and rotate it again, so that the sides of the two lower limb boards 1 can fit together to form a fixed structure with a U-shaped cross-section. Then adjust the length of the fixing belt 6 and stick it on the Velcro 5 to fix the patient's single lower bracket. In order to prevent the patient's lower limbs from rotating, the rod body of the heel support 2 can be inserted into the groove at the bottom of the U-shaped cross-section, so that the lower limb to be tested can place the foot in the heel support 2.

[0049] Embodiment 2: A body position fixing device for lower limb radiographic examination, such as Figure 6 As shown, the main difference between this embodiment and embodiment 1 lies in the position of the connecting rod 4, the structure of the connecting rod 4 and the specific structure of the corresponding connecting mechanism.

[0050] In this embodiment, a side cavity 18 is provided inside the connecting rod 4, and the connecting mechanism is mainly composed of a sleeve 15, a rotating rod 17, two sets of limit devices, a cylindrical barrel 22, a rotating rod 16 and a piston 20. Figure 8 and Fig. 9 As shown, the end of the rotating rod 17 is rotatably connected to the end of the lower limb board 1, so that the lower limb board 1 can swing in the horizontal direction and the two sides of the lower limb boards 1 can fit together; the sleeve 15 is sleeved on the rotating rod 17, and the side wall of the rotating rod 17 is provided with a limiting ring, and the limiting ring is also located in the sleeve 15 and rotatably connected to the sleeve 15, so that the rotating rod 17 can rotate stably. Under the limitation of the side cavity 18, the sleeve 15 can only translate along its length direction. A sealed cavity 23 is opened inside the end of the sleeve 15 close to the side cavity 18, and one end of the two sets of limiting devices are both located in the sealed cavity 23, and the other ends are respectively in contact with the inner wall of the rotating rod 17 and the connecting rod 4. The limiting device is mainly composed of a sliding rod 21 and a contact plate 19, as shown in FIG. Fig. 9 As shown, the two abutment plates 19 are respectively close to the inner side wall of the rotating rod 17 and the connecting rod 4, and the other end of the sliding rod 21 is located in the sealed cavity 23. One end of the cylindrical barrel 22 is inserted into the sealed cavity 23 of the sleeve 15, and the sleeve 15 is connected to the sealing cavity 23. Figure 7 , the other end of the cylindrical barrel 22 passes through the through groove 14 and is located outside the connecting rod 4. The piston 20 is sealingly and slidably arranged in the cylindrical barrel 22, the end of the rotating rod 16 is rotatably connected to the piston 20, and the side wall of the rotating rod 17 is also threadedly connected to the inner wall of the cylindrical barrel 22. In this way, when the rotating rod 16 is rotated, the piston 20 slides toward one side of the sealing chamber 23 to squeeze the space of the sealing chamber 23, so that the two contact plates 19 and the inner wall of the connecting rod 4 and the end of the rotating rod 17 are tightly fitted, thereby achieving a fixing effect. The sealing chamber 23 can be filled with gas or liquid. If it is liquid, the liquid needs to be filled in the entire sealing space, so that the piston 20 moves upward, and the contact plate 19 can be pushed out by utilizing the incompressible characteristics of the liquid. If it is gas, since gas is a compressible fluid, when the contact plate 19 contacts both the connecting rod 4 and the rotating rod 17, the piston 20 continues to be pushed downward, and the air pressure in the sealed space increases, which can increase the static friction between the contact plate 19 and the rotating rod 17, thereby improving the fixing effect.

[0051] In order to solve the problem of inaccurate imaging due to internal and external rotation of the patient's lower limbs, in this embodiment, a sliding groove 30 is provided on the side wall of the connecting rod 4 along its length direction. Fig.10As shown, a rotating mechanism is installed in the second slide groove 30 for controlling the angle of the heel support 2. The rotating mechanism is mainly composed of a second slider 25, a limit plate 27, a rotating plate 28, a push rod 29 and a knob 24; the second slider 25 is slidably installed in the second slide groove 30, combined with Fig.11 As shown, an L-shaped cavity 26 is provided in the slider 25; the rotating plate 28 is rotatably connected to the slider 25, and the end of the rotating plate 28 is fixedly connected to the heel support 2; one end of the push rod 29 and the limit plate 27 are both located in the cavity 26, and a sealed space is formed between the push rod 29, the raised position of the limit plate 27 and the side wall of the cavity 26, and the other end of the push rod 29 is located outside the slider 25 and is fixedly connected to the knob 24, and the side wall is threadedly connected to the slider 25; the limit plate 27 is in contact with the rotating plate 28. In this way, after the medical staff adjusts the rotation angle of the heel support 2, they rotate the knob 24, and the push rod 29 moves downward, and the limit plate 27 is pushed to be in close contact with the rotating plate 28 under the action of the fluid, thereby achieving the fixing of the angle. This principle is the same as the fixing principle of the sleeve 15 mentioned above, and both require the injection of fluid into the cavity 26, and the fluid can also be liquid or gas.

[0052] In addition, in order to facilitate the removal of the heel support 2, as Figure 6 As shown, the second slide groove 30 runs through the entire length direction of the connecting rod 4, and both ends are open, so that the heel support 2 can be removed and replaced by simply moving it horizontally to both sides.

[0053] In this embodiment, if only a single lower limb needs to be fixed, it is only necessary to rotate the lower limb board 1 and allow the lower limb board 1 to rotate around the rotating rod 17 so that its sides fit together, thereby forming an overall structure with a U-shaped cross-section, and then the fixing belt 6 and the velvet surface 13 are pasted to achieve the fixing effect.

[0054] It should be noted that the connecting rod 4 is arranged on the back of the lower limb board 1 or the heel of the heel support 2, which are all within the protection scope of this patent. At the same time, as long as the connecting mechanism can control the rotation and movement of the lower limb board 1 so that the two lower limb boards 1 can be combined to fix a single lower limb, the structural design of such a connecting mechanism is also within the protection scope of this patent.

[0055] Working principle: The method of fixing the patient's legs and one leg in this embodiment is the same as that in embodiment 1, but in this embodiment, after the position of the lower limb board 1 is fixed, the rotating rod 16 is rotated clockwise to move the piston 20 upward, thereby compressing the sealed space, so that the sliding rod 21 and the contact plate 19 move to both sides of the sealing cavity 23, and finally the two contact plates 19 are closely contacted with the rotating rod 17 and the inner wall of the connecting rod 4, respectively, so as to fix the lower limb board 1. When adjusting the angle of the heel support 2, by rotating the knob 24, the push rod 29 moves downward, and under the action of the fluid, the limit plate 27 is closely contacted with the rotating plate 28, so as to fix the rotation angle of the heel support 2.

[0056] Embodiment 3: A body position fixing device for lower limb radiographic examination. The main structure of this embodiment is the same as that of embodiment 2, and the main difference is that the arrangement of the fixing belt 6 is different, such as Fig.12 As shown, in this embodiment, the use of Velcro 5 is eliminated, different velvet surfaces 13 are arranged on the same horizontal plane at both sides of the back of the lower limb board 1, and a plurality of fixing belts 6 are arranged on the front of the lower limb board 1. The fixing belts 6 correspond to the horizontal positions of the velvet surfaces 13. When it is necessary to position and fix a single lower limb of the patient, the lower limb board 1 is rotated to Fig.13 In the position shown, the fixing belt 6 is fitted to the suede surface 13 on the back of the other lower limb plate 1 to achieve fixation.

[0057] It should also be noted that the fixing belt 6 and the suede 13 are arranged in the manner of this embodiment, and the effect of fixing the lower limbs can still be achieved when the two lower limb plates 1 are combined to form a U-shaped cross-section.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A body position fixing device for lower limb radiographic examination, characterized in that: The invention comprises two lower limb plates (1) with arc-shaped cross-sections and a connecting rod (4); a connecting mechanism for connecting the lower limb plates (1) and the connecting rod (4) is provided between the lower limb plates (1) and the connecting rod (4); the connecting mechanism is rotatably connected to the lower limb plates (1), so that the lower limb plates (1) can swing in a horizontal direction; at the same time, the connecting mechanism can rotate the lower limb plates (1) around the central axis in the length direction thereof, so that the side edges of the two lower limb plates (1) fit together; A plurality of fixing straps (6) capable of adjusting lengths are connected to the front edge of the lower limb plate (1), and a corresponding number of velvet surfaces (13) are provided at the back edge of the lower limb plate (1).

2. A body position fixing device for lower limb radiographic examination according to claim 1, characterized in that: It also includes two heel supports (2), which are located at one end of the lower limb plate (1).

3. A body positioning and fixing device for lower limb radiographic examination according to any one of claims 1 or 2, characterized in that: The connecting rod (4) is horizontally arranged directly below the two lower limb plates (1); an arc-shaped plate (10) is installed on the back of the lower limb plate (1) along the arc length direction of its cross section; a sliding groove (7) with an open top is opened in the connecting rod (4); The connecting mechanism comprises a slider (8) and a limit block (11) with a U-shaped cross section. The slider (8) is slidably installed in a slide groove (7). The limit block (11) is rotatably installed on the top of the slider (8). A plurality of through holes (9) of equal arc length are provided on the arc plate (10). A through hole (9) of the same size as that on the arc plate (10) is also provided on the side wall of the limit block (11). The fixing device also comprises a fixing rod (12). The fixing rod (12) can pass through the through holes (9) on the arc plate (10) and the limit block (11) to fix the lower limb plate (1).

4. A body position fixing device for lower limb radiographic examination according to claim 3, characterized in that: The heel support (2) is connected to the end of the lower limb plate (1).

5. The body positioning and fixing device for lower limb radiographic examination according to claim 2, characterized in that: The connecting rod (4) is arranged directly below the two heel supports (2); a side cavity (18) with a side opening is opened in the connecting rod (4), and a connecting mechanism is arranged in the side cavity (18); a second slide groove (30) extending along the length of the connecting rod (4) is opened at the top; a rotating mechanism is slidably arranged in the second slide groove (30), and the rotating mechanism is used to adjust the angle of internal and external rotation of the heel support (2); The connecting mechanism comprises a sleeve (15), a rotating rod (17), two sets of limiting devices, a cylindrical barrel (22), a rotating rod (16) and a piston (20); the end of the rotating rod (17) is fixedly connected to the end of the lower limb plate (1); the sleeve (15) is sleeved on the rotating rod (17), and the rotating rod (17) is rotatably connected to the inner wall of the sleeve (15); one end of the sleeve (15) is located in the side cavity (18); a sealing cavity (23) is opened inside the end of the sleeve (15) close to the side cavity (18), and the two sets of limiting devices are fixedly connected to the lower limb plate (1). One end is located in the sealed cavity (23), and the other end is respectively in contact with the rotating rod (17) and the inner wall of the connecting rod (4); a through groove (14) is provided at the bottom of the connecting rod (4) along its length direction; one end of the cylindrical barrel (22) is connected to the sealed cavity (23), and the other end passes through the through groove (14) and is located outside the connecting rod (4); the piston (20) is sealed and slidably arranged in the cylindrical barrel (22), the end of the rotating rod (16) is connected to the piston (20), and the side surface is also threadedly connected to the inner wall of the cylindrical barrel (22).

6. The body position fixing device for lower limb radiographic examination according to claim 5, characterized in that: The rotating mechanism comprises a second slider (25), a limit plate (27), a rotating plate (28), a push rod (29) and a knob (24); the second slider (25) is slidably arranged in the second slide groove (30), and a cavity (26) is opened in the second slider (25); the rotating plate (28) is rotatably connected to the second slider (25), and the end of the rotating plate (28) is fixedly connected to the heel support (2); one end of the push rod (29) and the limit plate (27) are both located in the cavity (26), the other end of the push rod (29) is located outside the second slider (25) and is fixedly connected to the knob (24), and the side wall is threadedly connected to the second slider (25); The limiting plate (27) is in contact with the rotating plate (28).

7. A body position fixing device for lower limb radiographic examination according to any one of claims 5 or 6, characterized in that: A plurality of Velcro strips (5) are arranged at the edges of the two lower limb plates (1); the Velcro strips (5) of the two lower limb plates (1) correspond to the positions of the fixing belts (6) respectively, and the Velcro strips (5) can be adhered to the corresponding fixing belts (6).

8. A body position fixing device for lower limb radiographic examination according to any one of claims 5 or 6, characterized in that: The fixing belts (6) on the two lower limb plates (1) are both arranged in alignment.

9. The body position fixing device for lower limb radiographic examination according to claim 1, characterized in that: The two lower limb plates (1) and the heel support (2) are both fitted with sponge pads (3).

10. The body position fixing device for lower limb radiographic examination according to claim 1, characterized in that: The width of one end of the two lower limb plates (1) close to the heel support (2) is smaller than the width of the other end away from the heel support (2).

Images