A device for assisting in the correction of pronation and supination of the foot after hip replacement

Abstract

The utility model belongs to the technical field of medical rehabilitation nursing apparatus, specifically discloses a kind of footpalm medial and lateral rotation correction auxiliary device after hip arthroplasty, including ankle clamp, the rear end of ankle clamp is equipped with a vertical fixed plate, the upper end of fixed plate is hinged with movable plate, the upper end of movable plate is equipped with the semicircle ring of same direction with ankle clamp, two outer sides of ankle clamp are symmetrically equipped with bearing column and are equipped with rotating clamp plate by bearing, the lower half of rotating clamp plate is provided with the sliding slot parallel with rotating clamp plate, two rotating clamp plate inner sides are symmetrically equipped with support plate, two support plate lower end are equipped with a sole soft board, the inside of the lower half of fixed plate is provided with straight groove, bottom support is installed in straight groove, bottom support is T-shaped, the front end of bottom support is equipped with a bottom horizontal plate. The utility model can prevent the footpalm medial and lateral rotation of patient when bed recovery, and can exert auxiliary action force to the ankle and heel of patient during walking, to assist in correcting footpalm state.

Description

Technical Field

[0001] This utility model belongs to the field of medical rehabilitation and nursing equipment technology, specifically relating to an auxiliary device for correcting the internal and external rotation of the foot after hip replacement surgery. Background Technology

[0002] Hip replacement surgery, also known as artificial hip replacement, involves inserting an artificial prosthesis, comprising the femoral and acetabular portions, into healthy bone using bone cement and screws to replace the diseased joint and restore normal hip function. It is a relatively mature and reliable treatment method. Patients require prolonged bed rest after hip replacement surgery, during which time they will wear "T-shaped shoes." T-shaped shoes are a commonly used orthopedic device in clinical practice; they are shoes fixed to a wooden frame and worn under the patient's foot to prevent lower limb rotation.

[0003] During the patient's postoperative recovery, it is necessary for the patient to gradually adapt to hip joint movement and improve the range of motion of the hip, which further requires gait training. However, the original T-strap shoes cannot be used during gait training. Without external force, the patient is prone to inward or outward pronation of the foot, leading to secondary injury due to poor gait. Utility Model Content

[0004] To address the aforementioned issues and provide external assistance to patients' feet and ankles during bed rest and walking rehabilitation activities, preventing secondary injuries caused by gait abnormalities due to foot pronation or supination, this invention proposes a foot pronation / supination correction assistive device after hip replacement surgery. This device connects an ankle clip to a soft footplate, stabilizing the patient's foot and limiting the range of motion of the ankle and heel during walking. It corrects the foot's posture during walking and, through a detachable bottom support, helps maintain proper foot positioning during bed rest after hip replacement surgery, preventing prolonged bed rest from causing foot pronation or supination.

[0005] To achieve the technical objectives mentioned above, this utility model is implemented through the following technical solution: a foot internal and external rotation correction auxiliary device after hip replacement surgery, including an ankle clamp;

[0006] The ankle clip is U-shaped with a symmetrical shape and an opening facing forward. A vertical fixed plate is installed at the rear end of the ankle clip. A movable plate is hinged to the upper end of the fixed plate. A semi-circular ring in the same direction as the ankle clip is installed at the upper end of the movable plate. Bearing columns are symmetrically installed on both outer sides of the ankle clip, and rotating clamping plates are installed through the bearings. The lower half of the rotating clamping plate has a sliding groove parallel to the rotating clamping plate. Support plates are symmetrically installed on the inner sides of the two rotating clamping plates. A soft foot plate is installed at the lower end of the two support plates.

[0007] The lower half of the fixing plate has a straight groove inside, and a bottom bracket is installed in the straight groove. The bottom bracket is T-shaped, and a bottom horizontal plate is installed at the front end of the bottom bracket. The bottom horizontal plate is parallel to and fits against the foot plate.

[0008] Furthermore, a protrusion of the same size as the slide groove is installed on the outer side of the support plate. A stud perpendicular to the support plate is installed on the protrusion. A nut is fitted on the stud. The support plate and the rotating clamp are connected together by the nut and the stud. The distance between the foot plate and the rotating clamp can be adjusted by sliding the protrusion in the slide groove.

[0009] Furthermore, the left bearing post of the ankle clip has a through-axial threaded hole and an adjusting rod installed thereon. The adjusting rod is bent at one end on the outside of the ankle clip and can be rotated to move inside the bearing post.

[0010] Furthermore, a circular concave panel is installed on one end of the inner side of the adjusting rod. The concave panel can fit against the patient's ankle, and the adjusting rod can be used to move the concave panel for adjustment.

[0011] Furthermore, the upper end of the bottom bracket is inserted into the straight groove of the fixing plate, and the upper end of the bottom bracket is provided with a bracket hole;

[0012] Furthermore, a hole is provided above the rear end of the straight groove and a pin is installed in the hole. The pin can pass through the support hole of the bottom support to connect the bottom support to the fixing plate, which is convenient for use when lying in bed and can be removed when walking for exercise.

[0013] Furthermore, a front fixation strap and a rear fixation strap are installed sequentially on the foot sole soft board, both of which are adjustable in length, so that the patient's foot can be fixed on the foot sole soft board;

[0014] Furthermore, an adjustable-length calf fixation strap is installed on the semicircular ring, which can fix the patient's calf inside the semicircular ring.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model can maintain a good limb position for patients who are bedridden for a long time after hip replacement surgery. After fixing the patient's foot in the soft plate and semi-circular ring, the foot is kept vertical under the action of the bottom support, which can prevent the lower limb from rotating for a long time, or the foot from rotating inward or outward.

[0017] 2. This utility model can be used when patients need to perform walking training. After removing the bottom bracket, the height of the ankle clip can be adjusted by adjusting the position of the support plate in the groove so that it corresponds to the patient's ankle and fits tightly against the heel. By rotating the adjustment rod, the concave panel is controlled to apply pressure to the ankle. During the patient's walking, it applies auxiliary force to the patient's ankle and heel, corrects the patient's foot position, and prevents the foot from rotating left and right, causing inward or outward rotation of the foot. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments are briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0020] Figure 2 This is a partial internal structure schematic diagram of Embodiment 1 of this utility model;

[0021] Figure 3 This is an isometric sectional view of Embodiment 1 of this utility model.

[0022] The structural names represented by each number in the attached diagram are as follows:

[0023] 1-Ankle clip, 101-Bearing post, 2-Fixing plate, 201-Straight groove, 3-Modible plate, 4-Semi-circular ring, 401-Lower leg fixing strap, 5-Rotating clamp, 501-Slide groove, 6-Adjusting rod, 7-Concave panel, 8-Support plate, 801-Protrusion, 802-Stud, 803-Nut, 9-Soft foot plate, 901-Front fixing strap, 902-Rear fixing strap, 10-Bottom bracket, 1001-Bracket hole, 1002-Bottom horizontal plate, 11-Pin. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0025] Example 1

[0026] See Figures 1 to 3 As shown, and based on the contents of this specification, a foot internal and external rotation correction assistive device is proposed after hip replacement surgery, including an ankle clamp 1;

[0027] Ankle clip 1 is U-shaped with left and right sides symmetrical and the opening faces forward. A vertical fixing plate 2 is installed at the rear end of the ankle clip 1. A movable plate 3 is hinged to the upper end of the fixing plate 2. A semi-circular ring 4 in the same direction as the ankle clip 1 is installed at the upper end of the movable plate 3. An adjustable calf fixation strap 401 is installed on the semi-circular ring 4, which can fix the patient's calf inside the semi-circular ring 4.

[0028] The ankle clamp 1 has bearing columns 101 symmetrically installed on both outer sides, and rotating clamps 5 are installed through the bearings. The lower half of the rotating clamp 5 has a sliding groove 501 parallel to the rotating clamp 5. Support plates 8 are symmetrically installed on the inner sides of the two rotating clamps 5. A foot soft plate 9 is installed at the lower end of the two support plates 8. The foot soft plate 9 is made of deformable rubber material and fabric sewn together. It can fit the sole of the foot like the sole of a shoe when the patient walks. A front fixing strap 901 and a rear fixing strap 902 are installed on the foot soft plate 9 in sequence. Both of them can be adjusted in length to fix the patient's foot on the foot soft plate 9. A protrusion 801 of the same size as the slide groove 501 is installed on the outer side of the support plate 8. A stud 802 perpendicular to the support plate 8 is installed on the protrusion 801. A nut 803 is fitted on the stud 802. The support plate 8 and the rotating clamping plate 5 are connected by the nut 803 and the stud 802. The distance between the foot plate 9 and the rotating clamping plate 5 can be adjusted by sliding the protrusion 801 in the slide groove 501.

[0029] Ankle clip 1 has a threaded hole extending through the axis in the left bearing post 101 and an adjusting rod 6 is installed thereon. The end of the adjusting rod 6 located on the outside of the ankle clip 1 is bent, and the adjusting rod 6 can be rotated to move inside the bearing post 101. A circular concave plate 7 is installed on the inner end of the adjusting rod 6. The concave plate 7 can fit against the patient's ankle, and the adjustment can be made by controlling the adjusting rod 6 to move the concave plate 7.

[0030] The lower half of the fixing plate 2 has a straight groove 201 inside, and a bottom bracket 10 is installed in the straight groove 201. The bottom bracket 10 is T-shaped, and the upper end of the bottom bracket 10 is inserted into the straight groove 201 of the fixing plate 2. The upper end of the bottom bracket 10 has a bracket hole 1001. A hole is opened above the rear end of the straight groove 201, and a pin 11 is installed in the hole. The pin 11 can pass through the bracket hole 1001 of the bottom bracket 10 to connect the bottom bracket 10 to the fixing plate 2, which is convenient for use when lying in bed. The bottom bracket 10 can be removed when walking for exercise. A bottom horizontal plate 1002 is installed at the front end of the bottom bracket 10. The bottom horizontal plate 1002 fits against the foot soft plate 9 to prevent the foot soft plate 9 from deforming.

[0031] When the patient is recovering in bed after surgery, the patient's foot is fixed to the soft foot plate 9 using the front fixation strap 901 and the rear fixation strap 902, and the patient's lower leg is fixed within the semi-circular ring 4. Then, the nut 803 is loosened to adjust the position of the support plate 8 on the rotating splint 5, so that the patient's foot is properly fixed, and then the nut 803 is tightened. When the patient needs to perform walking training, the pin 11 on the fixation plate 2 is pulled out, and then the bottom bracket 10 is removed by straightening the groove 201. By rotating the adjusting rod 6, the concave plate 7 applies auxiliary force to the ankle. When the patient walks, it is easier for the patient to walk without the obstruction of the bottom bracket 10. At the same time, the ankle clamp 1 and the concave plate 7 apply auxiliary force to the ankle to assist in correction. Meanwhile, the soft foot plate 9 and the rotating splint 5 allow the patient's foot to rotate forward and backward, making walking smoother.

[0032] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The preferred embodiments do not describe all details exhaustively, nor do they limit the present invention to the specific implementations described. Obviously, based on the content of this specification, those skilled in the art will understand that various modifications and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A foot internal / external rotation correction assistive device after hip replacement surgery, characterized in that, Including ankle clip (1): The ankle clip (1) has a vertical fixing plate (2) installed at its rear end. The upper end of the fixing plate (2) is hinged to a movable plate (3). The upper end of the movable plate (3) is fitted with a semi-circular ring (4) in the same direction as the ankle clip (1). The ankle clip (1) is symmetrically equipped with bearing columns (101) on both outer sides and a rotating clamp plate (5) is installed through the bearing. The lower half of the rotating clamp plate (5) is provided with a sliding groove (501) parallel to the rotating clamp plate (5). Support plates (8) are symmetrically installed on the inner sides of the two rotating clamp plates (5). A foot soft plate (9) is installed at the lower end of the two support plates (8). The lower half of the fixing plate (2) has a straight groove (201) inside, and a bottom bracket (10) is installed in the straight groove (201). The bottom bracket (10) is T-shaped, and a bottom horizontal plate (1002) is installed at the front end of the bottom bracket (10).

2. The foot internal / external rotation correction auxiliary device after hip replacement surgery according to claim 1, characterized in that: The support plate (8) has a protrusion (801) of the same size as the slide groove (501) installed on its outer side. A stud (802) perpendicular to the support plate (8) is installed on the protrusion (801). A nut (803) is fitted on the stud (802). The support plate (8) and the rotating clamp (5) are connected together by the nut (803) and the stud (802).

3. The foot internal / external rotation correction auxiliary device after hip replacement surgery according to claim 2, characterized in that: The ankle clip (1) has a threaded hole in the left bearing column (101) that runs through the axial direction and is fitted with an adjusting rod (6). The adjusting rod (6) is bent at one end on the outside of the ankle clip (1). Rotating the adjusting rod (6) allows it to move left and right inside the bearing column (101).

4. The foot internal / external rotation correction assistive device after hip replacement surgery according to claim 3, characterized in that: A circular concave panel (7) is installed on one end of the inner side of the adjusting rod (6), which can fit against the patient's ankle.

5. The foot internal / external rotation correction auxiliary device after hip replacement surgery according to claim 4, characterized in that: The upper end of the bottom bracket (10) is inserted into the straight groove (201) of the fixing plate (2), and the upper end of the bottom bracket (10) is provided with a bracket hole (1001).

6. The foot internal / external rotation correction auxiliary device after hip replacement surgery according to claim 5, characterized in that: The straight groove (201) has a hole at the upper rear end and a pin (11) is installed in the hole. The pin (11) can pass through the support hole (1001) of the bottom support (10) to connect the bottom support (10) with the fixing plate (2).

7. The foot internal / external rotation correction auxiliary device after hip replacement surgery according to claim 6, characterized in that: The footplate (9) is equipped with a front fixing strap (901) and a rear fixing strap (902) in sequence, and both the front fixing strap (901) and the rear fixing strap (902) are adjustable in length.

8. The foot internal / external rotation correction auxiliary device after hip replacement surgery according to claim 7, characterized in that: An adjustable-length calf fixing strap (401) is installed on the semicircular ring (4).

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