A calf support device

Abstract

The utility model provides a kind of shank supporting device, including shank fixing assembly, the shank fixing assembly is hinged by upper half hoop and lower half hoop, and elastic fine adjustment component is set to shank fixing assembly bottom.Compared with prior art, the utility model has the beneficial effects as follows: the elastic fine adjustment component of the device can absorb slight activity force generated by lower limbs: when the affected limb moves slightly, the reset spring offsets impact force by deformation, the ball head and the ball sleeve allow small-angle movement without transmitting rigid stress, effectively avoid the pulling or impact of micro-motion on the affected area, reduce the risk of pain and poor healing, the shank fixing assembly adopts upper half hoop and lower half hoop closed design, cooperate air bag inflation to realize flexible wrapping, air bag can self-adapting inflation according to the leg circumference of patient, both ensure the stability of fixation, avoid the problem of easy displacement of bandage, also eliminate rigid compression through flexible contact, greatly improve patient comfort, reduce complications caused by long-term use from the root.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a calf support device. Background Technology

[0002] In the fields of critical care medicine and orthopedic rehabilitation, patients' need for lower limb support is extremely urgent. Critically ill patients often cannot lift their legs independently due to the severity of their condition, and some also have injuries and ulcers in the heel area. For these patients, suspending the injured area to avoid secondary compression damage is a core need, directly affecting wound healing and the patient's overall recovery process. In orthopedic rehabilitation, patients with lower leg fractures, joint injuries, or post-operative conditions also require lower leg immobilization and support to maintain the correct position of the affected limb, reduce pain, promote healing, and prevent secondary injury due to improper activity. For example, after knee replacement surgery, the lower limb needs to be kept in a neutral or slightly flexed position, and patients with femoral fractures need to maintain lower limb abduction or traction. In these cases, lower leg support devices become indispensable assistive tools.

[0003] Existing calf support devices mostly adopt the following two design approaches: one is a fixed support frame, which uses a rigid bracket to fix the lower limb at a specific angle or position. Although it can provide stable support, it has poor adjustability and is difficult to adapt to the different body types, limb lengths, and postural needs of different patients during the rehabilitation stage. Moreover, rigid fixation can easily lead to insufficient patient comfort, and long-term use may cause problems such as pressure sores and poor blood circulation. The other is a simple strap-type support, which uses straps to fix the lower limb to the hospital bed or ordinary bracket. Although it is easy to operate, the support stability is insufficient, and the affected limb is easily displaced due to slight movements of the patient, affecting the treatment effect. At the same time, most devices lack a buffer mechanism for slight movements of the affected limb. Slight movements caused by the patient turning over, coughing, etc., can easily be transmitted to the affected area through the rigid structure, increasing the risk of pain or poor healing. Therefore, it is necessary to design a calf support device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lower leg support device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lower leg support device, comprising:

[0006] The lower leg fixation component is composed of an upper half hoop and a lower half hoop hinged together.

[0007] An elastic fine-tuning component is located at the bottom of the lower leg fixing component, and the bottom of the elastic fine-tuning component is rotatably connected to an installation sleeve.

[0008] Horizontal plate, horizontally through-mounting sleeve;

[0009] There are two vertical plates which are vertically arranged and symmetrically disposed at both ends of the horizontal plate. Both ends of the horizontal plate are rotatably connected to the two vertical plates, and fastening knobs are installed at the connection parts between the vertical plates and the horizontal plate.

[0010] There are two limiting components which are respectively connected to the two vertical plates and symmetrically installed on the bed frames on both sides of the hospital bed.

[0011] Further, the limiting component includes a connecting sleeve, a clamping seat, an adjusting knob, a limiting plate, an adjusting screw rod and a clamping plate. The clamping seat is designed in a "U" shape, and a connecting sleeve is integrally arranged on the side of the vertical part of the clamping seat away from the opening. A clamping plate is horizontally arranged inside the clamping seat, and an adjusting screw rod is threadedly connected to the central position of the bottom of the clamping seat. The adjusting screw rod penetrates through the bottom of the clamping seat and is rotatably connected to the clamping plate. The central position of the top of the clamping plate is designed with a downward concave arc, forming a coaxial clamping surface with the upward concave arc structure at the top end inside the clamping seat.

[0012] Further, a through groove whose shape matches that of the vertical plate is vertically opened at the central position inside the connecting sleeve, and the vertical plate passes through the through groove. An adjusting knob is threadedly connected to the side of the connecting sleeve away from the clamping seat, and a groove is opened on the inner side wall of the connecting sleeve away from the clamping seat. A limiting plate is installed in the groove, and the end of the adjusting knob extends into the groove and is rotatably connected to the limiting plate.

[0013] Further, a plurality of limiting edges are equidistantly arranged on the side of the vertical plate close to the limiting plate, and the limiting plate engages with the limiting edges. The shape of the limiting plate matches the shape of the groove.

[0014] Further, the inner sides of the upper half hoop and the lower half hoop are both designed as corresponding semi-circular arcs, and air bags are fixed on the inner side walls of the upper half hoop and the lower half hoop. An air pump is installed at the bottom of one side of the lower half hoop, and the output end of the air pump is connected to the two air bags through a corrugated pipe.

[0015] Further, a buckle is connected to the top of the upper half hoop through a strap, and the length of the strap is adjustable. A slot is fixed at the central position of the side of the lower half hoop away from the hinge axis, and the buckle is adapted to the slot.

[0016] Furthermore, the elastic fine-tuning component includes a mounting cylinder, a slide groove, a support rod, a slider, a return spring, a ball head, a ball sleeve, and a hinge seat. The mounting cylinder has vertically arranged slide grooves on both sides, and sliders with shapes adapted to the grooves are installed within the grooves. The top and bottom ends of the sliders are fixed with return springs, and the other end of the return springs is connected to the top or bottom end inside the slide groove. Support rods are hinged to the sides of the two sliders away from the mounting cylinder, and hinge seats are hinged to the top ends of the support rods. The hinge seats are connected to the bottom of the lower half-hoop via bolts. A ball head is fixed to the top of the mounting cylinder, and a ball sleeve is fitted onto the ball head. The top of the ball sleeve is threadedly connected to the center of the bottom of the lower half-hoop.

[0017] Furthermore, the shape of the horizontal plate matches the internal shape of the mounting sleeve, and a limit knob is provided at the bottom of the mounting sleeve, with the top of the limit knob abutting against the bottom of the horizontal plate.

[0018] The beneficial effects of this utility model are:

[0019] 1. This device achieves height adjustment through the sliding connection between the vertical plate and the connecting sleeve, and tilt angle adjustment through the rotational connection between the horizontal plate and the vertical plate and the fastening knob. The installation sleeve achieves lateral position adjustment by sliding along the horizontal plate. The multi-dimensional adjustment capability can accurately meet the positional needs of different treatment scenarios such as neutral / slightly flexed position after knee replacement surgery and abduction / traction of femoral fracture. Its adaptability far exceeds that of traditional fixed support frames. The lower leg fixation component adopts a closed design of upper and lower half hoop, which, together with the airbag inflation, achieves flexible wrapping. The airbag can adaptively expand according to the patient's leg circumference, which not only ensures the stability of fixation (avoiding the problem of easy displacement of the strap type), but also eliminates rigid pressure through flexible contact, greatly improving patient comfort and reducing complications caused by long-term use from the root.

[0020] 2. The elastic fine-tuning component of this device can absorb the slight movement force generated by the lower limb through the rotational cooperation of the ball head and the ball sleeve, and the sliding buffer structure of the slider and the return spring. When the affected limb moves slightly, the return spring offsets the impact force through deformation. The ball head and the ball sleeve allow small-angle movement without transmitting rigid stress, effectively avoiding the traction or impact of the micro-movement on the affected area, reducing the risk of pain and poor healing. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of a lower leg support device according to the present invention;

[0023] Figure 2 This is a schematic diagram of the open structure of the lower leg fixing component of the lower leg support device of this utility model;

[0024] Figure 3 This is a schematic diagram of the closed structure of the lower leg fixing component of the lower leg support device according to this utility model;

[0025] Figure 4 This is a schematic diagram of the elastic fine-tuning component structure of a lower leg support device according to the present invention;

[0026] Figure 5 This is a schematic diagram of the limiting component structure of a lower leg support device according to the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of two sets of lower leg fixing components of a lower leg support device according to the present invention;

[0028] Figure 7 This is a schematic diagram of one embodiment of the lower leg support device of this utility model;

[0029] In the picture:

[0030] 1. Limiting component; 101. Connecting sleeve; 1011. Through groove; 1012. Groove; 102. Clamping seat; 103. Adjusting knob; 104. Limiting plate; 105. Adjusting screw; 106. Clamping plate;

[0031] 2. Vertical plate; 201. Limiting edge;

[0032] 3. Horizontal board;

[0033] 4. Tighten the knob;

[0034] 5. Mounting sleeve; 501. Limit knob;

[0035] 6. Elastic fine-tuning component; 601. Mounting cylinder; 6011. Slide groove; 602. Support rod; 603. Slider; 604. Return spring; 605. Ball head; 606. Ball sleeve; 607. Hinge seat;

[0036] 7. Lower leg fixation assembly; 701. Upper half hoop; 702. Lower half hoop; 703. Buckle; 704. Slot; 705. Airbag; 706. Air pump; 707. Corrugated pipe. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0038] Please see Figures 1 to 7, the present utility model provides a technical solution: a calf support device, including a calf fixing component 7, the calf fixing component 7 is formed by hinging an upper half hoop 701 and a lower half hoop 702, an elastic fine-tuning component 6 is arranged at the bottom of the calf fixing component 7, and the bottom of the elastic fine-tuning component 6 is rotatably connected with a mounting sleeve 5. A cross plate 3 is horizontally arranged through the mounting sleeve 5. There are two vertical plates 2 arranged vertically, and the vertical plates 2 are symmetrically arranged at both ends of the cross plate 3. Both ends of the cross plate 3 are rotatably connected with the two vertical plates 2 respectively, and fastening knobs 4 are installed at the joints of the vertical plates 2 and the cross plate 3. Limiting components 1 are connected to both vertical plates 2, and the limiting components 1 are symmetrically installed on the bed frames on both sides of the hospital bed. The cross plate 3 is rotatably connected with the vertical plates 2 and cooperates with the fastening knobs 4, and can flexibly adjust the inclination angle of the calf fixing component 7, such as the knee bending angle of the patient, to meet the specific requirements of different rehabilitation stages or injury types for the lower limb position. For example, in the initial stage after surgery, it needs to be kept slightly bent, and the stretching angle is gradually increased in the later stage. The mounting sleeve 5 can slide horizontally along the cross plate 3, driving the calf fixing component 7 to move left and right, which can not only adjust the fixing position according to the distance between the patient's legs. The two limiting components 1 are symmetrically installed on the bed frames on both sides of the hospital bed, and a stable structure of "support on both sides + load in the middle" is formed through the vertical plates 2 and the cross plate 3. This symmetrical design can evenly disperse the weight of the lower limbs, avoid tilting or displacement of the device caused by unilateral force, and ensure the stability during the support process, especially suitable for continuous use by long-term bedridden patients.

[0039] Please refer to Figure 1 and Figure 5 , the limiting component 1 includes a connecting sleeve 101, a clamping seat 102, an adjusting knob 103, a limiting plate 104, an adjusting screw rod 105 and a clamping plate 106. The clamping seat 102 is designed in a "C" shape, and a connecting sleeve 101 is integrally arranged on the side of the vertical part of the clamping seat 102 far away from the opening. A clamping plate 106 is horizontally arranged inside the clamping seat 102, and an adjusting screw rod 105 is threadedly connected to the central position at the bottom of the clamping seat 102. The adjusting screw rod 105 penetrates through the bottom of the clamping seat 102 and is rotatably connected with the clamping plate 106. The central position at the top of the clamping plate 106 is designed with a concave arc, forming a coaxial clamping surface with the concave arc structure at the top end inside the clamping seat 102. The clamping seat 102 is designed in a "C" shape, and配合内部水平设置的夹板106,可轻松卡合在病床两侧的床架上,通过旋转装夹座底部螺纹连接的调节螺杆,能带动夹板上下移动,从而适应不同厚度的床架,解决了传统固定装置只能适配特定规格床架的问题,大大提升了装置的通用性,夹板顶部中央呈圆弧下凹设计,与装夹座内部顶端的圆弧上凹结构形成同轴夹持面,这种圆弧面设计能与圆形或弧形床架紧密贴合,增大了夹持接触面积,使夹持更加牢固,有效防止装置在使用过程中因患者活动而发生滑动或移位,为整个小腿支撑装置提供了稳定的基础。配合内部水平设置的夹板106,可轻松卡合在病床两侧的床架上,通过旋转装夹座底部螺纹连接的调节螺杆,能带动夹板上下移动,从而适应不同厚度的床架,解决了传统固定装置只能适配特定规格床架的问题,大大提升了装置的通用性,夹板顶部中央呈圆弧下凹设计,与装夹座内部顶端的圆弧上凹结构形成同轴夹持面,这种圆弧面设计能与圆形或弧形床架紧密贴合,增大了夹持接触面积,使夹持更加牢固,有效防止装置在使用过程中因患者活动而发生滑动或移位,为整个小腿支撑装置提供了稳定的基础。With the internally horizontally arranged clamping plate 106, it can be easily clamped on the bed frames on both sides of the hospital bed. By rotating the adjusting screw rod threadedly connected to the bottom of the clamping seat, the clamping plate can be moved up and down to adapt to bed frames of different thicknesses, solving the problem that traditional fixing devices can only fit bed frames of specific specifications, greatly improving the versatility of the device. The central part of the top of the clamping plate is designed with a concave arc, forming a coaxial clamping surface with the concave arc structure at the top end inside the clamping seat. This arc surface design can closely fit with circular or arc-shaped bed frames, increasing the clamping contact area, making the clamping more firm, effectively preventing the device from sliding or shifting due to patient movement during use, and providing a stable foundation for the entire calf support device.

[0040] Please see Figure 5 The connecting sleeve 101 has a vertically shaped through groove 1011 at its center, which matches the shape of the vertical plate 2. The vertical plate 2 passes through the through groove 1011. An adjusting knob 103 is threadedly connected to the side of the connecting sleeve 101 away from the clamping seat 102. A groove 1012 is formed on the inner wall of the connecting sleeve 101 away from the clamping seat 102. A limiting plate 104 is installed in the groove 1012. The end of the adjusting knob 103 extends into the groove 1012 and is rotatably connected to the limiting plate 104. The vertically shaped through groove 1011 inside the connecting sleeve 101 matches the shape of the vertical plate 2, and the vertical plate 2 passes through the through groove 1011. This structure allows the vertical plate 2 to slide up and down along the through groove 1011, thereby driving the height adjustment of the entire lower limb support structure. Whether the patient is tall or short, they can find a suitable support height by adjusting the position of the vertical plate 2 in the through groove 1011, meeting the usage needs of patients of different body types.

[0041] Please see Figure 5 The vertical plate 2 has multiple limiting ridges 201 evenly spaced on one side near the limiting plate 104, and the limiting plate 104 engages with the limiting ridges 201. The shape of the limiting plate 104 matches the shape of the groove 1012. Compared to fixing methods that rely solely on friction, this toothed engagement structure can mechanically restrict the vertical displacement of the vertical plate 2. Even under continuous external force such as the gravity pulling of the patient's lower limbs, it can effectively prevent the vertical plate 2 from accidentally sliding down, greatly improving the locking reliability after height adjustment. At the same time, the shape of the limiting plate 104 matches the shape of the groove 1012, ensuring that the limiting plate 104 can only move stably in the horizontal direction within the groove 1012, avoiding engagement failure caused by the misalignment of the limiting plate 104, and further strengthening the fixing effect.

[0042] Please see Figure 1 , Figure 2 and Figure 3The inner sides of both the upper half-hoop 701 and the lower half-hoop 702 feature corresponding semi-circular arc designs, and airbags 705 are fixed to the inner walls of both. An air pump 706 is installed at the bottom of one side of the lower half-hoop 702, and the output end of the air pump 706 is connected to the two airbags 705 through a corrugated pipe 707. The corresponding semi-circular arc design of the inner sides of the upper half-hoop 701 and the lower half-hoop 702, when closed, forms a circular space that conforms to the contour of the lower limb, naturally conforming to the shape of the lower limb, avoiding pressure from sharp corners on the skin, and increasing the contact area with the lower limb, making the fixation more stable and reducing the lower limb's stress during fixation. The airbags 705, fixed to the inner walls of the upper half-hoop 701 and lower half-hoop 702, can expand adaptively according to the actual thickness of the lower limbs after inflation, achieving flexible wrapping for patients with different leg circumferences. Compared with rigid fixation, this method can avoid poor blood circulation caused by excessive fixation and can also prevent displacement caused by excessive fixation, greatly improving the wearing comfort of patients and adapting to patients of various body types. The air pump 706 at the bottom of the lower half-hoop 702 is connected to the two airbags 705 through the corrugated tube 707. Medical staff can easily control the inflation volume of the airbags 705 by operating the air pump 706, thereby adjusting the fixation pressure.

[0043] Please see Figure 2 and Figure 3 The top of the upper half of the hoop 701 is connected to a buckle 703 via a strap, and the length of the strap is adjustable. The lower half of the hoop 702 has a slot 704 fixed at the center position on the side away from the hinge axis, and the buckle 703 is adapted to the slot 704. The adaptation design of the buckle 703 and the slot 704 can form a mechanical locking structure. After being fastened, it is not easy to be accidentally loosened due to the patient's movement such as turning over or slight movement. Compared with the loosening problem caused by the decrease of adhesiveness of Velcro, the fixation reliability is stronger.

[0044] Please see Figure 4The elastic fine-tuning component 6 includes a mounting cylinder 601, a slide groove 6011, a support rod 602, a slider 603, a return spring 604, a ball head 605, a ball sleeve 606, and a hinge seat 607. The mounting cylinder 601 has vertically arranged slide grooves 6011 on both sides, and sliders 603 with matching shapes are installed within the slide grooves 6011. The top and bottom ends of the sliders 603 are fixed to the return springs 604, and the other end of the return springs 604 is connected to the top or bottom end inside the slide grooves 6011. Support rods are hinged to the sides of the two sliders 603 away from the mounting cylinder 601. 602, and the top of each support rod 602 is hinged with a hinge seat 607. The hinge seat 607 is connected to the bottom of the lower half hoop 702 by bolts. The top of the mounting cylinder 601 is fixed with a ball head 605, and a ball sleeve 606 is fitted on the ball head 605. The top of the ball sleeve 606 is threaded to the center of the bottom of the lower half hoop 702. When the patient's lower limb makes a slight longitudinal or lateral movement, the force will be transmitted to the support rod 602 through the hinge seat 607, pushing the slider 603 to slide along the slide groove 6011, causing the return spring 604 to deform and convert kinetic energy into elastic potential energy, thereby buffering the impact. This structure can effectively absorb the force generated by the lower limb movement, avoid rigid transmission and cause secondary damage to the affected area. The structure of the ball head 605 and the ball sleeve 606 allows the lower leg fixation component 7 to rotate at multiple angles within a certain range, which can adapt to the natural positioning posture of the patient's lower limb, avoid joint stiffness or muscle tension caused by forced fixation, and improve the patient's comfort.

[0045] Please see Figure 1 The shape of the horizontal plate 3 matches the internal shape of the mounting sleeve 5, and the bottom of the mounting sleeve 5 is equipped with a limiting knob 501. The top of the limiting knob 501 is pressed against the bottom of the horizontal plate 3. The shape of the horizontal plate 3 matches the internal shape of the mounting sleeve 5. This design allows the mounting sleeve 5 to slide stably along the horizontal plate 3, avoiding jamming or displacement. When adjusting the lateral position of the lower leg fixation component 7, medical staff can easily push the mounting sleeve 5 to move, ensuring a smooth and efficient adjustment process. The lower leg fixation component 7 can be quickly adjusted to a suitable lateral position to adapt to the patient's body shape or treatment needs. The top of the limiting knob 501 at the bottom of the mounting sleeve 5 is pressed against the bottom of the horizontal plate 3. After the lateral position is adjusted to the correct position, the limiting knob 501 is tightened. The friction between the limiting knob 501 and the horizontal plate 3 can firmly fix the mounting sleeve 5 in the current position.

[0046] Please see Figure 6 In this embodiment, two sets of the lower leg fixation component 7, the elastic fine-tuning component 6, and the mounting sleeve 5 are provided. Both sets of mounting sleeves 5 slide laterally along the horizontal plate 3, driving the lower leg fixation component 7 to move left and right. Therefore, precise adjustments can be made according to the different needs of the patient's two legs to ensure that both legs receive the best support and fixation effect, thereby improving the overall treatment effect.

[0047] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A calf support device, characterized in that, Comprising: A calf fixing component (7), which is hinged by an upper half hoop (701) and a lower half hoop (702); An elastic fine-tuning component (6), which is arranged at the bottom of the calf fixing component (7), and an installation sleeve (5) is rotatably connected to the bottom of the elastic fine-tuning component (6); A transverse plate (3), which is arranged horizontally through the installation sleeve (5); Two vertical plates (2), which are vertically arranged and symmetrically arranged at both ends of the transverse plate (3). Both ends of the transverse plate (3) are rotatably connected to the two vertical plates (2), and fastening knobs (4) are installed at the joints of the vertical plates (2) and the transverse plate (3); Two limiting components (1), which are respectively connected to the two vertical plates (2), and the limiting components (1) are symmetrically installed on the bed frames on both sides of the hospital bed.

2. The calf support device according to claim 1, characterized in that: The limiting component (1) includes a connecting sleeve (101), a clamping seat (102), an adjusting knob (103), a limiting plate (104), an adjusting screw rod (105) and a clamping plate (106). The clamping seat (102) is designed in a "C" shape, and a connecting sleeve (101) is integrally arranged on the side of the vertical part of the clamping seat (102) far away from the opening. A clamping plate (106) is horizontally arranged inside the clamping seat (102), and an adjusting screw rod (105) is threadedly connected to the central position at the bottom of the clamping seat (102). The adjusting screw rod (105) penetrates through the bottom of the clamping seat (102) and is rotatably connected to the clamping plate (106). The central position at the top of the clamping plate (106) is designed with a downward concave arc, forming a coaxial clamping surface with the upward concave arc structure at the top end inside the clamping seat (102).

3. The calf support device according to claim 2, characterized in that: A through groove (1011) whose shape fits the vertical plate (2) is vertically opened at the central position inside the connecting sleeve (101), and the vertical plate (2) penetrates through the through groove (1011). An adjusting knob (103) is threadedly connected to the side of the connecting sleeve (101) far away from the clamping seat (102). A groove (1012) is opened on the inner side wall of the connecting sleeve (101) far away from the clamping seat (102), and a limiting plate (104) is installed in the groove (1012). The end of the adjusting knob (103) extends into the groove (1012) and is rotatably connected to the limiting plate (104).

4. The calf support device according to claim 3, characterized in that: A plurality of limiting edges (201) are equidistantly arranged on the side of the vertical plate (2) close to the limiting plate (104), and the limiting plate (104) engages with the limiting edges (201). The shape of the limiting plate (104) fits the shape of the groove (1012).

5. A calf support device according to claim 1, characterized in that: The inner sides of the upper half hoop (701) and the lower half hoop (702) are both designed as corresponding semi-circular arcs, and air bags (705) are fixed on the inner side walls of the upper half hoop (701) and the lower half hoop (702). An air pump (706) is installed at the bottom of one side of the lower half hoop (702), and the output end of the air pump (706) is connected to the two air bags (705) through a bellows (707).

6. The calf support device according to claim 1, characterized in that: The top of the upper half hoop (701) is connected to a buckle (703) by a strap, and the length of the strap is adjustable. The lower half hoop (702) has a slot (704) fixed at the center position on the side away from the hinge axis, and the buckle (703) is compatible with the slot (704).

7. A calf support device according to claim 1, characterized in that: The elastic fine-tuning component (6) includes a mounting cylinder (601), a slide groove (6011), a support rod (602), a slider (603), a return spring (604), a ball head (605), a ball sleeve (606), and a hinge seat (607). The mounting cylinder (601) has vertically arranged slide grooves (6011) on both sides, and a slider (603) with a shape adapted to the slide groove (6011) is installed inside the slide groove (6011). The top and bottom ends of the slider (603) are fixed to the return spring (604), and the other end of the return spring (604)... The end is connected to the top or bottom of the slide groove (6011). The two sliders (603) are hinged to the side away from the mounting cylinder (601) with a support rod (602). The top of the support rod (602) is hinged to a hinge seat (607). The hinge seat (607) is connected to the bottom of the lower half hoop (702) by bolts. The top of the mounting cylinder (601) is fixed with a ball head (605). A ball sleeve (606) is fitted on the ball head (605). The top of the ball sleeve (606) is threaded to the center of the bottom of the lower half hoop (702).

8. A calf support device according to claim 1, characterized in that: The shape of the horizontal plate (3) matches the internal shape of the mounting sleeve (5), and the bottom of the mounting sleeve (5) is provided with a limit knob (501), the top of the limit knob (501) abutting against the bottom of the horizontal plate (3).

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