A CT examination leg support device

Abstract

The utility model belongs to CT examination leg support device technical field, concretely relates to a CT examination leg support device, including foot department placing subassembly, the limiting seat rotation setting is established in the fixed base top, the fixed base is provided with two groups, and the other group fixed base top connects foot department placing subassembly, the foot department adjusting assembly is established in the baffle of placing seat one side fixedness and is provided with, foot department adjusting assembly connects the foot department placing frame of movable setting in the top surface of placing seat, the worm engages and connects the worm wheel, and the worm wheel is connected foot department placing frame through the fixed link, the calf placing assembly and the thigh placing assembly all are provided with two groups bearing seat in, two groups bearing seat are connected through length adjusting assembly, length adjusting assembly includes the sleeve board, the sleeve board is slidably provided with the inner slide, the through -hole bolt no.

Description

Technical Field

[0001] This utility model belongs to the technical field of leg support devices for CT examinations, and specifically relates to a leg support device for CT examinations. Background Technology

[0002] CT scans are a relatively advanced medical examination technique. When examining a patient, CT scans require continuous scanning. Therefore, when scanning the patient's legs, a CT leg support is needed to support the patient's legs. After scanning, the data is obtained, processed by computer software, and then images are produced. Doctors can then use the images to understand the patient's condition.

[0003] Existing leg support methods have many shortcomings: First, traditional support devices are mostly fixed in shape, making it difficult to adapt to the differences in leg length among different patients. This results in some patients' legs being suspended or unevenly stressed, which not only affects the comfort of the examination but may also cause blurred images due to patients' unconscious movements. Second, conventional devices lack precise adjustment functions for the angles of the feet and legs. CT scans often require the patient's legs to be in a specific position (such as internal rotation, external rotation, or flexion and extension) to clearly present the lesion site. The inability to flexibly adjust the position can easily cause scanning blind spots and increase the chance of repeated examinations. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a leg support device for CT examination, which solves the problem that traditional support devices are mostly fixed in shape, making it difficult to adapt to the differences in leg length among different patients, and the inability to flexibly adjust the body position easily causes scanning blind spots.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leg support device for CT examination, comprising a foot placement assembly. The foot placement assembly is connected to one end of a lower leg placement assembly via a connecting plate, and the other end of the lower leg placement assembly is connected to one end of a thigh placement assembly via a popliteal fossa placement assembly. The other end of the thigh placement assembly is movably connected to a limiting seat. The limiting seat is rotatably mounted above a fixed seat. Two sets of fixed seats are provided, and the foot placement assembly is connected above the other set of fixed seats. The foot placement assembly includes a placement seat. A foot adjustment assembly is provided on a baffle fixed to one side of the placement seat. The foot adjustment assembly is connected to a foot placement frame movably mounted on the top surface of the placement seat. The foot adjustment assembly includes a worm gear, which meshes with a worm wheel. The worm wheel is connected to the foot placement frame via a fixed rod. Two sets of load-bearing seats are provided in both the lower leg placement assembly and the thigh placement assembly, and the two sets of load-bearing seats are connected via a length adjustment assembly. The length adjustment assembly includes a sleeve plate, and an inner sliding plate is slidably disposed within the sleeve plate. Two bolts are connected through holes in the inner sliding plate.

[0006] The beneficial effects of this utility model are:

[0007] By sliding the sleeve plate and inner slide plate in the length adjustment component, combined with the locking structure of bolt two, the length of the lower leg placement component and the thigh placement component can be quickly and accurately adjusted to meet the leg length needs of different patients and avoid the leg being suspended or unevenly stressed.

[0008] The foot adjustment component adopts a worm gear and worm wheel transmission structure, which can realize the internal and external rotation of the foot placement frame. With the limiting design of the limiting slide and the moving block, the accuracy and stability of the foot angle adjustment are ensured, meeting the strict requirements of CT scans for different body positions, and effectively reducing the scanning blind zone and the number of repeated examinations.

[0009] To limit the position of the foot during internal and external rotation:

[0010] As a further improvement to the above technical solution: a fixed rod is fixedly provided at the center of the heel position on the side of the foot placement frame corresponding to the sole of the foot, and the fixed rod passes through the rotating connecting baffle. The worm gear is sleeved on the outer side of one end of the fixed rod. The bottom end of the foot placement frame is arc-shaped. An arc-shaped groove adapted to the bottom end of the foot placement frame is provided on the top surface of the placement seat. A limiting slide groove is provided on the bottom surface of the arc-shaped groove. The limiting slide groove is arc-shaped. A movable block is movably arranged in the limiting slide groove. The movable block is fixed at the center of the bottom end of the foot placement frame.

[0011] The beneficial effects of this improvement are as follows: medical staff can rotate the worm gear to drive the foot placement frame to rotate through the fixed rod. At the same time as the foot placement frame rotates, the movable block moves within the limiting groove. The rotating foot placement frame allows the patient's foot to rotate inward and outward as needed during imaging, and can also limit the position of the inward and outward rotated foot.

[0012] To precisely adjust the rotation angle of the footrest:

[0013] As a further improvement to the above technical solution: a limiting groove two is formed through the baffle plate, and a scale value is provided on the outer arc of the limiting groove two opposite to the placement seat of the baffle plate. An installation rod is movably arranged in the limiting groove two, and the installation rod is located below the fixed rod. One end of the installation rod is connected to the thigh placement component, and the other end of the installation rod is fixed with an indicator block, and the indicator block points to the scale value.

[0014] The beneficial effect of this improvement is that medical staff can precisely adjust the rotation angle of the foot placement frame by using the scale value indicated by the through indicator block, avoiding excessive rotation that could cause patient discomfort.

[0015] In order to immobilize and limit the patient's legs:

[0016] As a further improvement to the above technical solution: the support seat located near the foot placement component inside the calf placement component has connecting plates at both ends on the side facing the foot placement component. One end of the connecting plate is connected to both sides of the foot placement frame corresponding to the ankle. A protective pad is fixed in the arc-shaped placement groove opened in the center of the top surface of the support seat. The protective pad is made of memory foam and its surface is covered with medical antibacterial fabric. The top surface of the support seat has a retaining ring and a strap on both sides. The strap has a hook and loop side and a hook and loop adhesive side on one side. The strap moves through the retaining ring and the hook and loop side is attached to the hook and loop adhesive side.

[0017] The beneficial effect of this improvement is that medical staff can fix and limit the patient's legs by passing the strap through the clasp and then folding the strap back to attach the hook and loop side to the hook and loop side.

[0018] To prevent the patient's leg from sliding and causing the scan position to shift:

[0019] As a further improvement to the above technical solution: the popliteal fossa placement component includes a limiting rod, the outer side of which is fitted with a protective sleeve, and the protective sleeve is made of silicone material with an anti-slip texture on the surface. The calf placement component and the thigh placement component are provided with a load-bearing seat on the side near the popliteal fossa placement component, and both sides are fixed with movable plates. The ends of the movable plates are rotatably connected to the two ends of the limiting rod.

[0020] The benefits of this improvement are: it provides flexible support to the popliteal fossa, avoiding hard contact that could compress nerves and blood vessels, thus reducing numbness in patients; and the silicone texture increases friction with the skin, preventing the patient's leg from sliding and causing the scanning position to shift.

[0021] To allow for fine adjustments to the thigh placement component:

[0022] As a further improvement to the above technical solution: the load-bearing seat of the thigh placement component near the limiting seat has a movable block two fixedly provided on the side facing the limiting seat, and the movable block two is movably disposed in the limiting slide groove three opened by the limiting seat facing the thigh placement component.

[0023] The beneficial effects of this improvement are: when the patient's foot is rotated, the entire device will move, and the second movable block will move smoothly within the third limiting slide, thereby achieving fine adjustment of the thigh placement component.

[0024] To allow for adjustment of the distance between the two sets of support seats within the lower leg support assembly and the thigh support assembly according to the patient's leg length:

[0025] As a further improvement to the above technical solution: the top surface of the length adjustment component is provided with an observation window, the position of the second bolt corresponds to the observation window, the observation window observes the position of the through hole on the inner slide plate, the second bolt penetrates the bottom surface of the threaded connection sleeve plate, the second bolt is threaded to the through hole opened on the inner slide plate, and the opposite ends of the inner slide plate and the sleeve plate are respectively connected to the corresponding load-bearing seats.

[0026] The beneficial effects of this improvement are as follows: Before using this device, medical staff can adjust the distance between the two sets of support seats in the lower leg placement component and the thigh placement component according to the patient's leg length. By rotating bolt two, it can be disengaged from the sleeve plate. Then, the inner slide can be pulled to move the support seat away from the other set of support seats. After the distance between the two sets of support seats is adjusted to a suitable length, bolt two can be rotated to connect the threaded sleeve plate and the through hole.

[0027] To move the device from its leg position to a more suitable position on the bed:

[0028] As a further improvement to the above technical solution: one end of each fixed base is connected to one end of an electric push rod, the electric push rod is fixed to one side of a limiting plate, and the limiting plate is fixed to the top surface of the clamping member. The bottom end of the clamping member is connected to a threaded bolt, and a clamping plate is provided on the top surface of the bolt.

[0029] The beneficial effects of this improvement are as follows: the clamping device can be clamped on the edge of the bed first, and the clamping plate can be gradually moved closer to the bed by rotating the bolt to clamp the bed and complete the limitation of the device on the bed. Then, the electric push rod can be driven by the controller to move the position of the device where the legs are placed to a suitable position on the bed, so that the patient can place his / her legs on it.

[0030] To control the electric linear actuator:

[0031] As a further improvement to the above technical solution: a controller is provided on one side of the limiting plate, and the controller is equipped with a microcontroller, a relay, and a control switch. The controller is electrically connected to the electric push rod.

[0032] The beneficial effect of this improvement is that it enables control of the electric actuator.

[0033] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a schematic diagram of the foot support frame of this utility model in its internal rotation state.

[0036] Figure 3This is a schematic diagram of the structure of the present invention in the knee-bent state;

[0037] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0038] Figure 5 This is a schematic diagram of the cross-sectional structure of the limiting seat of this utility model;

[0039] Figure 6 This is a schematic diagram of the foot placement rack structure of this utility model;

[0040] Figure 7 This is a schematic diagram of the limiting seat structure of this utility model;

[0041] Figure 8 This is a schematic diagram of the cross-sectional structure of the placement seat of this utility model;

[0042] Figure 9 This is an enlarged structural diagram of point B in this utility model;

[0043] Figure 10 This is an enlarged structural diagram of point A in this utility model;

[0044] In the diagram: 1. Foot placement assembly; 101. Placement seat; 1011. Limiting slide groove one; 102. Mounting plate; 103. Foot placement frame; 1031. Movable block one; 104. Baffle; 1041. Limiting slide groove two; 1042. Indicator block; 2. Lower leg placement assembly; 3. Thigh placement assembly; 4. Electric push rod; 5. Clamping component; 6. Clamping plate; 601. Bolt one; 7. Popliteal fossa placement assembly; 701. Limiting rod; 702. Protective sleeve; 8. Connecting plate; 9. Load-bearing seat; 10. Protective pad; 11. Length adjustment assembly; 1101. Sleeve plate; 1102. Inner sliding plate; 1103. Observation window; 1104. Bolt 2; 12. Limiting seat; 1201. Limiting slide groove 3; 13. Fixed seat; 14. Controller; 15. Foot adjustment assembly; 1501. Worm gear; 1502. Worm wheel. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0046] like Figure 1-10As shown, a CT scan leg support device includes a foot placement assembly 1. The foot placement assembly 1 is connected to one end of a lower leg placement assembly 2 via a connecting plate 8, and the other end of the lower leg placement assembly 2 is connected to one end of a thigh placement assembly 3 via a popliteal fossa placement assembly 7. The other end of the thigh placement assembly 3 is movably connected to a limiting seat 12. The limiting seat 12 is rotatably mounted above a fixed seat 13. Two sets of fixed seats 13 are provided, and the foot placement assembly 1 is connected to the top of the other set of fixed seats 13. The foot placement assembly 1 includes a placement seat 101, and a foot adjustment assembly 1 is provided on a baffle 104 fixed to one side of the placement seat 101. 5. The foot adjustment component 15 is connected to the foot placement frame 103 movably disposed on the top surface of the placement seat 101. The foot adjustment component 15 includes a worm gear 1501, which meshes with a worm wheel 1502. The worm wheel 1502 is connected to the foot placement frame 103 through a fixed rod. Both the calf placement component 2 and the thigh placement component 3 are provided with two sets of load-bearing seats 9, and the two sets of load-bearing seats 9 are connected through a length adjustment component 11. The length adjustment component 11 includes a sleeve plate 1101, and an inner slide plate 1102 is slidably disposed in the sleeve plate 1101. A through hole is opened on the inner slide plate 1102 to connect to bolt 1104.

[0047] A fixing rod is fixed at the center of the heel position on one side of the foot rest 103, and the fixing rod passes through and is rotatably connected to the baffle 104. The worm gear 1502 is sleeved on the outer side of one end of the fixing rod. The bottom end of the foot rest 103 is arc-shaped. The top surface of the rest base 101 has an arc-shaped groove adapted to the bottom end of the foot rest 103. A limiting slide groove 1011 is formed on the bottom surface of the arc-shaped groove. The limiting slide groove 1011 is arc-shaped, and a movable block 10 is movably disposed in the limiting slide groove 1011. 31. The movable block 1031 is fixed at the center of the bottom end of the foot placement frame 103. Medical staff can rotate the worm gear 1501 to make the worm wheel 1502 connected to it rotate through the fixed rod to drive the foot placement frame 103 to rotate. While the foot placement frame 103 rotates, the movable block 1031 moves within the limiting groove 1011. The rotating foot placement frame 103 can make the patient's foot rotate inward and outward as needed during image irradiation, and can also limit the position of the foot that rotates inward and outward.

[0048] A limiting groove 1041 is formed through the baffle 104. The baffle 104 has a scale value on the outer arc of the limiting groove 1041, facing away from the placement seat 101. An installation rod is movably installed in the limiting groove 1041 and is located below the fixed rod. One end of the installation rod is connected to the thigh placement component 3, and the other end of the installation rod is fixed with an indicator block 1042, which points to the scale value. Medical staff can accurately adjust the rotation angle of the foot placement frame 103 by using the scale value indicated by the indicator block 1042 to avoid excessive rotation and patient discomfort.

[0049] The support seat 9 located near the foot placement component 1 within the lower leg placement component 2 has connecting plates 8 at both ends on the side facing the foot placement component 1. One end of each connecting plate 8 connects to both sides of the foot placement bracket 103 corresponding to the ankle area. A protective pad 10 is fixedly installed in the arc-shaped placement groove at the center of the top surface of the support seat 9. The protective pad 10 is made of memory foam and its surface is covered with medical antibacterial fabric. The top surface of the support seat 9 has a retaining ring and a strap on both sides. One end of each strap has a Velcro loop and a Velcro adhesive side. The strap moves through the retaining ring and the Velcro loop is attached to the Velcro adhesive side. Medical staff can fix and limit the patient's leg by passing the strap through the retaining ring and then folding the strap back to attach the Velcro loop and Velcro adhesive side together.

[0050] The popliteal fossa placement component 7 includes a limiting rod 701, and a protective sleeve 702 is fitted on the outer side of the limiting rod 701. The protective sleeve 702 is made of silicone and has an anti-slip texture on its surface. The calf placement component 2 and the thigh placement component 3 are provided with a load-bearing seat 9 on one side near the popliteal fossa placement component 7. Movable plates are fixed on both sides of the load-bearing seat. The ends of the movable plates are rotatably connected to the two ends of the limiting rod 701. The flexible support of the popliteal fossa avoids hard contact and compression of nerves and blood vessels, reduces the patient's numbness, and the silicone texture increases the friction with the skin to prevent the patient's leg from sliding and causing the scanning position to shift.

[0051] The thigh placement component 3 is provided with a load-bearing seat 9 near the limiting seat 12. A movable block 2 is fixed on the side facing the limiting seat 12. The movable block 2 is movably disposed in the limiting slide groove 3 1201 opened by the limiting seat 12 facing the thigh placement component 3. When the patient's foot is rotated, the entire device will move. The movable block 2 moves smoothly in the limiting slide groove 3 1201 to realize the micro-adjustment of the thigh placement component 3.

[0052] The length adjustment component 11 has an observation window 1103 on its top surface. The second bolt 1104 is positioned corresponding to the observation window 1103. The observation window 1103 observes the position of the through hole on the inner slide plate 1102. The second bolt 1104 penetrates the bottom surface of the threaded connecting sleeve plate 1101. The second bolt 1104 is threaded to the through hole on the inner slide plate 1102. The opposite ends of the inner slide plate 1102 and the sleeve plate 1101 are respectively connected to the corresponding load-bearing seats 9. Before using this device, medical staff can adjust the distance between the two sets of load-bearing seats 9 in the lower leg placement component 2 and the thigh placement component 3 according to the patient's leg length. By rotating the second bolt 1104, it is disengaged from the sleeve plate 1101. Then, the inner slide plate 1102 is pulled out to move the load-bearing seat 9 away from the other set of load-bearing seats 9. When the distance between the two sets of load-bearing seats 9 is adjusted to a suitable length, the second bolt 1104 is rotated to connect the threaded sleeve plate 1101 and the through hole.

[0053] One end of each fixed base 13 is connected to one end of an electric push rod 4. The electric push rod 4 is fixed to one side of a limiting plate, and the limiting plate is fixed to the top surface of the clamping member 5. The bottom end of the clamping member 5 is connected by a threaded bolt 601, and a clamping plate 6 is provided on the top surface of the bolt 601. The clamping member 5 can be clamped to the edge of the bed first. By rotating the bolt 601, the clamping plate 6 can be gradually moved closer to the bed to clamp the bed and limit the device on the bed. Then, the electric push rod 4 can be driven by the controller 14 to move the position of the device where the legs are placed to a suitable position on the bed, so that the patient can place his / her legs on it.

[0054] A controller 14 is provided on one side of the limiting plate. The controller 14 contains a microcontroller, a relay, and a control switch. The controller 14 is electrically connected to the electric push rod 4.

[0055] The working principle and usage procedure of this utility model are as follows: Before performing a CT imaging examination, the operator first places the clamping component 5 at the edge of the CT examination table. By rotating bolt 601, the clamping plate 6 is gradually moved closer to the table until the support device is firmly clamped to the examination table, preventing the device from shifting and interfering with image acquisition during the scanning process. Subsequently, the controller 14 is used to operate the electric push rod 4 to precisely move the support device to the preset position on the CT examination table, ensuring that the device is in a suitable area of ​​the CT scanning field of view, so that the patient can directly enter the scanning range after placing their legs. According to the actual length of the patient's legs, the operator rotates... Loosen bolt 1104 from sleeve 1101. Observe the position of the through hole on the inner slide plate 1102 through the observation window 1103 on the top surface of the length adjustment component 11. Pull the inner slide plate 1102 to move the support seat 9, adjusting the distance between the two sets of support seats 9 in the lower leg placement component 2 and the thigh placement component 3, so that the support device fits the length of the patient's leg, avoiding suspension or excessive pressure. After adjustment, turn bolt 1104 again to lock sleeve 1101 and inner slide plate 1102, ensuring the stability of the support structure. Assist the patient to lie supine on the examination bed and place the patient's foot... The patient's knee, calf, and thigh are placed sequentially on foot placement component 1, calf placement component 2, and thigh placement component 3, ensuring a tight fit between the patient's popliteal fossa and the protective sleeve 702 of the popliteal fossa placement component 7 to reduce discomfort during the examination. Next, the straps on both sides of the top surface of the support base 9 are passed through the retaining rings, and the straps are folded back to connect the hook and loop fasteners. This method secures the patient's leg, preventing ghosting or blurring of CT images due to limb movement during the examination, thus ensuring image quality. If the CT examination requires adjustment of the patient's foot angle to obtain clear images of specific areas, the procedure... The operator rotates the worm gear 1501, which meshes with the worm wheel 1502 to rotate, causing the fixed rod and foot placement bracket 103 to rotate within the arc-shaped groove on the top surface of the placement seat 101. During this process, the movable block 1031 is limited within the limiting slide groove 1011, enabling the patient's foot to rotate inward or outward. Simultaneously, the operator observes the indication of the scale value on the outer side of the indicator block 1042 on the limiting slide groove 1041, precisely adjusting the angle of the foot to the CT scan required, placing the lesion in the optimal scanning position, providing doctors with clear and comprehensive CT image data, and assisting in accurate diagnosis.

[0056] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of this utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A leg support device for CT examination, characterized in that: The system includes a foot placement component (1), which is connected to one end of a calf placement component (2) via a connecting plate (8). The other end of the calf placement component (2) is connected to one end of a thigh placement component (3) via a popliteal fossa placement component (7). The other end of the thigh placement component (3) is movably connected to a limiting seat (12). The limiting seat (12) is rotatably mounted above a fixed seat (13). Two sets of fixed seats (13) are provided, and the foot placement component (1) is connected above the other set of fixed seats (13). The foot placement component (1) includes a placement seat (101). A foot adjustment component (15) is provided on a baffle (104) fixed to one side of the placement seat (101). The component (15) is connected to the foot placement frame (103) movably disposed on the top surface of the placement seat (101). The foot adjustment component (15) includes a worm gear (1501), which meshes with a worm wheel (1502). The worm wheel (1502) is connected to the foot placement frame (103) through a fixed rod. The calf placement component (2) and the thigh placement component (3) are each provided with two sets of load-bearing seats (9), and the two sets of load-bearing seats (9) are connected through a length adjustment component (11). The length adjustment component (11) includes a sleeve plate (1101), and an inner slide plate (1102) is slidably disposed in the sleeve plate (1101). The through hole opened on the inner slide plate (1102) is connected to bolt two (1104).

2. The leg support device for CT examination according to claim 1, characterized in that: The foot support (103) has a fixed rod at the center of the heel position on the side of the foot, and the fixed rod passes through the rotating connecting baffle (104). The worm gear (1502) is sleeved on the outside of one end of the fixed rod. The bottom end of the foot support (103) is arc-shaped. The top surface of the support (101) is provided with an arc-shaped groove that fits the bottom end of the foot support (103). The bottom surface of the arc-shaped groove is provided with a limiting slide groove (1011). The limiting slide groove (1011) is arc-shaped. A movable block (1031) is movably arranged in the limiting slide groove (1011). The movable block (1031) is fixed at the center of the bottom end of the foot support (103).

3. The leg support device for CT examination according to claim 1, characterized in that: A limiting groove 2 (1041) is provided through the baffle (104). The baffle (104) facing away from the placement seat (101) has a scale value on the arc-shaped outer side of the limiting groove 2 (1041). An installation rod is movably arranged in the limiting groove 2 (1041) and is located below the fixed rod. One end of the installation rod is connected to the thigh placement component (3), and the other end of the installation rod is fixed with an indicator block (1042), which points to the scale value.

4. A leg support device for CT examination according to claim 1, characterized in that: The support seat (9) located near the foot placement component (1) in the lower leg placement component (2) is connected to connecting plates (8) at both ends on the side facing the foot placement component (1). One end of the connecting plate (8) is connected to the two sides of the foot placement frame (103) corresponding to the ankle. The arc-shaped placement groove opened in the center of the top surface of the support seat (9) is fixed with a protective pad (10). The protective pad (10) is made of memory foam and its surface is covered with medical antibacterial fabric. The top surface of the support seat (9) is provided with a retaining ring and a strap on both sides. The strap is provided with a hook and loop side and a hook and loop adhesive side on one side. The strap moves through the retaining ring and the hook and loop side is attached to the hook and loop adhesive side.

5. A leg support device for CT examination according to claim 1, characterized in that: The popliteal fossa placement assembly (7) includes a limiting rod (701), and a protective sleeve (702) is fitted on the outside of the limiting rod (701). The protective sleeve (702) is made of silicone and has an anti-slip texture on its surface. The calf placement assembly (2) and the thigh placement assembly (3) are provided with a load-bearing seat (9) on the side near the popliteal fossa placement assembly (7), and movable plates are fixed on both sides of the load-bearing seat (9). The ends of the movable plates are rotatably connected to the two ends of the limiting rod (701).

6. A leg support device for CT examination according to claim 1, characterized in that: The load-bearing seat (9) of the thigh placement component (3) near the limiting seat (12) has a movable block two fixed on the side facing the limiting seat (12). The movable block two is movably disposed in the limiting slide groove three (1201) opened by the limiting seat (12) facing the thigh placement component (3).

7. A leg support device for CT examination according to claim 1, characterized in that: The length adjustment component (11) has an observation window (1103) on its top surface. The position of the second bolt (1104) corresponds to the observation window (1103). The observation window (1103) observes the position of the through hole on the inner slide plate (1102). The second bolt (1104) penetrates the bottom surface of the threaded connecting sleeve plate (1101). The second bolt (1104) is threaded to the through hole opened on the inner slide plate (1102). The opposite ends of the inner slide plate (1102) and the sleeve plate (1101) are respectively connected to the corresponding bearing seats (9).

8. A leg support device for CT examination according to claim 1, characterized in that: One end of each of the fixed bases (13) is connected to one end of an electric push rod (4). The electric push rod (4) is fixed on one side of the limiting plate, and the limiting plate is fixed on the top surface of the clamping member (5). The bottom end of the clamping member (5) is connected by a threaded bolt (601), and a clamping plate (6) is provided on the top surface of the bolt (601).

9. A leg support device for CT examination according to claim 8, characterized in that: A controller (14) is provided on one side of the limiting plate. The controller (14) contains a microcontroller, a relay, and a control switch. The controller (14) is electrically connected to the electric push rod (4).

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