Ankle foot orthosis

Abstract

The utility model relates to the technical field of rehabilitation medical instruments, and discloses an ankle-foot orthosis. The ankle-foot orthosis comprises a foot fixing sleeve, a shank fixing sleeve and an ankle fixing sleeve, wherein the foot fixing sleeve is detachably worn on the foot of a human body. The shank fixing sleeve is detachably worn on the shank of the human body, the ankle fixing sleeve is used for sleeving the ankle of the human body, the ankle fixing sleeve is rotationally connected to the foot fixing sleeve with the X axis as the axis and can be fixed relative to the foot fixing sleeve through a first locking piece, and the ankle fixing sleeve is rotationally connected to the shank fixing sleeve with the Y axis as the axis and can be fixed relative to the foot fixing sleeve through a second locking piece. And the shank fixing sleeve can be fixed relative to the shank fixing sleeve through the second locking piece. The ankle-foot orthosis can gradually and separately adjust the inward and outward turning and the flexion and extension angle of the ankle joint, and meanwhile, evaluation and orthosis are carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of rehabilitation medical appliances, in particular to an ankle-foot orthosis. Background Art

[0002] As a commonly used rehabilitation treatment, ankle-foot orthoses can effectively inhibit muscle spasms during standing and walking, prevent and correct joint deformities, improve lower limb motor ability in stroke patients, and enhance their ability to live independently. However, the current clinical application of orthoses for stroke is relatively chaotic, and there is a lack of clinical application standards to guide the selection of orthoses based on the patient's condition. The same problem also exists in the fields of Parkinson's disease and fracture surgery. Current technologies include the following 8 types of orthoses: T-shoes, low-temperature thermoplastic ankle-foot orthoses, posterior elastic ankle-foot orthoses, spiral ankle-foot orthoses, static ankle-foot orthoses, ground reaction force ankle-foot orthoses, hinged ankle-foot orthoses, and dynamic ankle-foot orthoses. However, these eight types of orthoses all have common problems: First, the correction angle of varus and varus cannot be adjusted. The current finished orthoses are all fixed angles. Due to muscle tension and other reasons, some users cannot reach the correct angle through passive correction or are forced to reach the correct angle, which causes severe discomfort. The principle of gradual improvement is not followed. Second, the angles of foot drop and foot inversion cannot be set and adjusted separately. The angles of flexion and extension and varus and varus are fixed and cannot be adjusted separately.

[0003] Therefore, there is an urgent need to provide an ankle-foot orthosis to solve the above problems. Utility Model Content

[0004] Based on the above, the purpose of the present invention is to provide an ankle-foot orthosis that can progressively and separately adjust the ankle joint inversion and inversion and the ankle joint flexion and extension angle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An ankle-foot orthosis, comprising:

[0007] A foot fixing sleeve that can be detachably worn on the human foot;

[0008] The calf fixing sleeve is detachable and can be worn on the human calf;

[0009] The ankle fixing sleeve is used to be put on the ankle of the human body, is rotatably connected to the foot fixing sleeve about the X-axis, and can be fixed relative to the foot fixing sleeve by a first locking member. The ankle fixing sleeve is rotatably connected to the calf fixing sleeve about the Y-axis, and can be fixed relative to the calf fixing sleeve by a second locking member.

[0010] As a preferred embodiment of an ankle-foot orthosis, a first scale is provided on the side of the foot fixing sleeve, and a first pointer is fixedly provided on one side of the ankle fixing sleeve, and the first pointer points to the first scale to indicate the relative angle between the ankle fixing sleeve and the foot fixing sleeve.

[0011] As a preferred solution of the ankle-foot orthosis, the first locking member is a first bolt, and the first bolt is detachably connected to the foot fixing sleeve and the ankle fixing sleeve.

[0012] As a preferred embodiment of an ankle-foot orthosis, a second scale is provided on the rear side of the calf fixing sleeve, and a second pointer is fixedly provided on the rear side of the ankle fixing sleeve, and the second pointer points to the second scale to indicate the relative angle between the ankle fixing sleeve and the calf fixing sleeve.

[0013] As a preferred embodiment of an ankle-foot orthosis, one end of the second pointer is fixedly connected to the rear side of the ankle fixing sleeve, and the other end is rotatably connected to the calf fixing sleeve via a rotating shaft, and the length of the rotating shaft extends along the Y-axis direction.

[0014] As a preferred solution of the ankle-foot orthosis, the second locking member is a second bolt, and the second bolt is detachably connected to the second pointer and the calf fixing sleeve.

[0015] As a preferred embodiment of the ankle-foot orthosis, the circumferences of the foot fixing sleeve and the calf fixing sleeve are adjustable.

[0016] As a preferred embodiment of an ankle-foot orthosis, the upper side of the foot fixing sleeve is provided with a first opening, the first opening is for the human foot to pass through the foot fixing sleeve, and the foot fixing sleeve is provided with a first adjustment strap, which is arranged across the first opening.

[0017] As a preferred embodiment of an ankle-foot orthosis, the side of the calf fixing sleeve is provided with a second opening for the human calf to pass through the calf fixing sleeve. The calf fixing sleeve is provided with a second adjustment strap, and the second adjustment strap is provided across the second opening.

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

[0019] The utility model provides an ankle-foot orthosis, which comprises a foot fixing sleeve, a calf fixing sleeve and an ankle fixing sleeve that are detachably wearable on a human body. After the ankle-foot orthosis is worn on a human body, the ankle fixing sleeve is rotated about an X-axis to a desired correction position, and then fixed relative to the foot fixing sleeve by a first locking member, thereby achieving ankle flexion and extension correction; at the same time, the ankle fixing sleeve is rotated about a Y-axis to a desired correction position, and then fixed relative to the calf fixing sleeve by a second locking member, thereby achieving ankle varus and valgus correction; if further correction is required, the first locking member or the second locking member can be released, and the ankle fixing sleeve can be rotated to the second correction position, and then fixed by the first locking member or the second locking member, thereby achieving the purpose of progressive correction of ankle varus and valgus and ankle flexion and extension respectively;

[0020] Furthermore, by means of first and second scales provided on the foot fixing sleeve and the calf fixing sleeve, a first pointer provided on the ankle fixing sleeve points to the first scale, for indicating the relative angle between the ankle fixing sleeve and the foot fixing sleeve, and at the same time, a second pointer provided on the ankle fixing sleeve points to the second scale, for indicating the relative angle between the ankle fixing sleeve and the calf fixing sleeve. The correction angle can be directly read through the first and second scales, thereby achieving quantitative evaluation, which is intuitive and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 is a side view of the ankle-foot orthosis provided by an embodiment of the present invention in a neutral position of the ankle joint;

[0023] Figure 2 is a side view of the ankle-foot orthosis provided by an embodiment of the present invention in an ankle extension position;

[0024] Figure 3 This is a side view of the ankle-foot orthosis provided by an embodiment of the present invention in a state of ankle flexion;

[0025] Figure 4 This is a rear view of the ankle-foot orthosis provided by an embodiment of the present invention in a neutral position of the ankle joint;

[0026] Figure 5 This is a rear view of the ankle-foot orthosis provided by an embodiment of the present utility model in a state of ankle eversion;

[0027] Figure 6This is a rear view of the ankle-foot orthosis provided by an embodiment of the present invention in an ankle-joint inversion state.

[0028] In the picture:

[0029] 1. Foot fixing sleeve; 11. First scale; 12. First adjustment strap;

[0030] 2. Calf fixing sleeve; 21. Second scale; 22. Second adjustment strap;

[0031] 3. Ankle support sleeve; 31. First pointer; 32. Second pointer;

[0032] 4. a first locking member;

[0033] 5. Second locking member. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of this utility model, unless otherwise specified, "plurality" means two or more. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and do not have any special meaning.

[0038] like Figures 1 to 6 As shown, this embodiment provides an ankle-foot orthosis, which includes a foot support sleeve 1, a calf support sleeve 2, and an ankle support sleeve 3. The foot support sleeve 1 is removable and wearable on the human foot, the calf support sleeve 2 is removable and wearable on the human calf, and the ankle support sleeve 3 is used to be worn around the human ankle. The ankle support sleeve 3 is rotatably connected to the foot support sleeve 1 about the X-axis and can be fixed relative to the foot support sleeve 1 by a first locking member 4. The ankle support sleeve 3 is rotatably connected to the calf support sleeve 2 about the Y-axis and can be fixed relative to the calf support sleeve 2 by a second locking member 5. The X-axis and the Y-axis are perpendicular to the plane containing the Y-axis, and the Z-axis is parallel to the direction in which the human body is fully standing. The ankle-foot orthosis comprises a foot fixing sleeve 1, a calf fixing sleeve 2 and an ankle fixing sleeve 3 which are detachably worn on the human body. After the ankle-foot orthosis is worn on the human body, the ankle fixing sleeve 3 is rotated about the X-axis to the desired correction position, and then fixed relative to the foot fixing sleeve 1 by the first locking member 4 to achieve ankle flexion and extension correction. At the same time, the ankle fixing sleeve 3 is rotated about the Y-axis to the desired correction position, and then fixed relative to the calf fixing sleeve 2 by the second locking member 5 to achieve ankle varus and valgus correction. If further correction is required, the first locking member 4 or the second locking member 5 can be released, and the ankle fixing sleeve 3 can be rotated to the second correction position, and then fixed by the first locking member 4 or the second locking member 5 to achieve the purpose of progressive correction of ankle varus and valgus and ankle flexion and extension respectively.

[0039] Furthermore, if Figure 1As shown, a first scale 11 is provided on the side of the foot support sleeve 1, and a first pointer 31 is fixedly provided on one side of the ankle support sleeve 3. The first pointer 31 points to the first scale 11 and is used to indicate the relative angle between the ankle support sleeve 3 and the foot support sleeve 1. When the first pointer 31 is parallel to or coincides with the biological force line of the body in the standing position, the scale mark of the first pointer 31 on the first scale 11 is 0°. The range on both sides of the 0° of the first scale 11 is 0°-90°. A large scale line is provided at 45°, and other positions are divided into small scales of 5°. Small scale lines (not specifically shown in the figure) are provided to facilitate reading of specific values. The required adjustment angle for ankle flexion and extension is 0-45°, thus meeting the correction requirements. By setting the first scale 11 for reading the degree, the specific correction angle can be visualized for each correction, and correction evaluation can be performed at any time, which makes it easier for patients and their families to clearly understand the correction progress or changes, which has a motivating effect.

[0040] Specifically, the first locking member 4 is a first bolt, which is detachably connected to the foot fixing sleeve 1 and the ankle fixing sleeve 3. In one embodiment, the ankle fixing sleeve 3 is rotatably connected to the foot fixing sleeve 1 via a first rotating pin, and the length direction of the first rotating pin extends along the X-axis direction. When it is necessary to correct the flexion and extension of the ankle joint, the first bolt is loosened, and the partially separated ankle fixing sleeve 3 and the foot fixing sleeve 1 are rotated relative to each other via the first rotating pin, thereby driving the first pointer 31 on the ankle fixing sleeve 3 and the first scale 11 on the foot fixing sleeve 1 to rotate relative to each other, making it easy to read the correction angle at any time. When the target angle of ankle flexion and extension correction is reached, the first bolt is used to thread the ankle fixing sleeve 3 and the foot fixing sleeve 1 so that the relative positions of the ankle fixing sleeve 3 and the foot fixing sleeve 1 are fixed. At this time, the reading of the first scale 11 is the ankle flexion and extension correction angle. Preferably, multiple first bolts can be provided, and these multiple bolts can simultaneously tighten the ankle support sleeve 3 and the foot support sleeve 1, ensuring the relative fixation and stability of the ankle support sleeve 3 and the foot support sleeve 1. For example, two or three first bolts can be provided. In another embodiment, the tail end of the first pointer 31 is fixed to the ankle support sleeve 3 in a sleeve-like shape. The first bolt passes through the sleeve-like structure along the X-axis and is threadedly connected to the foot support sleeve 1. When the first bolt is loosened, the first bolt does not completely disengage from the ankle support sleeve 3 or the foot support sleeve 1. The partially separated ankle support sleeve 3 can rotate relative to the foot support sleeve 1 about the first bolt as the rotation axis to adjust the ankle flexion and extension correction angle. When the target ankle flexion and extension correction angle is reached, the first bolt is tightened to fix the ankle support sleeve 3 relative to the foot support sleeve 1. At this time, the reading of the first scale 11 is read, which is the ankle flexion and extension correction angle.

[0041] Furthermore, if Figure 4As shown, a second scale 21 is provided on the back side of the calf fixing sleeve 2, and a second pointer 32 is fixedly provided on the back side of the ankle fixing sleeve 3. The second pointer 32 points to the second scale 21 and is used to indicate the relative angle between the ankle fixing sleeve 3 and the calf fixing sleeve 2. When the second pointer 32 is parallel to or coincides with the biological force line of the body in the standing position, the scale mark of the second pointer 32 on the second scale 21 is 0°. The range on both sides of 0° of the second scale 21 is 0°-90°. Large scale lines are provided at 30° and 60°, and other positions are divided into small scales of 5°. Small scale lines (not specifically shown in the figure) are provided to facilitate reading of specific values. The adjustment angle required for ankle inversion and varus is 0-40°, thus meeting the correction requirements. By setting the second scale 21 for reading the degree, the specific correction angle can be visualized for each correction, and correction evaluation can be performed at any time, which is convenient for patients and their families to understand the correction progress or changes, and has a motivating effect.

[0042] Specifically, one end of the second pointer 32 is fixedly connected to the rear side of the ankle support sleeve 3, for example, by welding or threading. The other end is rotatably connected to the calf support sleeve 2 via a shaft, the shaft extending along the Y-axis. The calf support sleeve 2 and the ankle support sleeve 3 rotate relative to each other. Rotating the ankle support sleeve 3 drives the second pointer 32 to rotate about the shaft, thereby achieving ankle varus and valgus correction.

[0043] More specifically, the second locking member 5 is a second bolt, which is detachably connected to the second pointer 32 and the calf fixing sleeve 2. In one embodiment, when it is necessary to correct the ankle varus and varus, the second bolt is loosened, and the incompletely separated calf fixing sleeve 2 and the second pointer 32 are rotated relative to each other via the rotating shaft, thereby causing the second pointer 32 to rotate relative to the second scale 21 on the calf fixing sleeve 2, making it easy to read the correction angle at any time. When the target angle of ankle varus and varus correction is reached, the calf fixing sleeve 2 and the second pointer 32 are threadedly connected by the second bolt, so that the relative positions of the calf fixing sleeve 2 and the ankle fixing sleeve 3 are fixed. At this time, the reading of the second scale 21 is read, which is the ankle varus and varus correction angle. Preferably, multiple second bolts can be provided, and multiple bolts can simultaneously tighten the calf fixing sleeve 2 and the second pointer 32 to ensure the relative fixation stability of the calf fixing sleeve 2 and the ankle fixing sleeve 3. For example, two or three second bolts can be provided. In another embodiment, the second bolt passes through the arrow end of the second pointer along the Y-axis direction and is threadedly connected to the calf fixing sleeve 2. When the second bolt is loosened, the second bolt and the calf fixing sleeve 2 and the second pointer 32 are not completely separated. The incompletely separated calf fixing sleeve 2 and the second pointer 32 rotate relative to each other with the second bolt as the rotation axis to adjust the ankle varus and varus correction angle; when the target ankle varus and varus correction angle is reached, the second bolt is tightened so that the ankle fixing sleeve 3 can be relatively fixed to the calf fixing sleeve 2. At this time, the reading of the second scale 21 is read, which is the ankle varus and varus correction angle.

[0044] In this embodiment, the circumference of the foot fixing sleeve 1 and the calf fixing sleeve 2 is adjustable. Both the foot fixing sleeve 1 and the calf fixing sleeve 2 are provided with straps to adjust the circumference to adapt to patients of different body shapes and improve comfort.

[0045] Specifically, the upper side of the foot support sleeve 1 is provided with a first opening for the foot to pass through. The foot support sleeve 1 is provided with a first adjustment strap 12, which is arranged across the first opening. The provision of the first opening facilitates donning of the foot support sleeve 1 and improves patient comfort. For example, a first buckle is provided on one side of the first opening, and one end of the first adjustment strap 12 is connected to the other side of the first opening. The first adjustment strap 12 includes a polished surface section and an adhesive surface section. The other end of the first adjustment strap 12 can be passed across the first opening and passed through the first buckle. The polished surface section of the first adjustment strap 12 is then bonded to the adhesive surface section. By adjusting the bonding position of the polished surface section and the adhesive surface section, the circumference of the foot support sleeve 1 can be adjusted to fit the circumference of the patient's foot. Preferably, two or more first adjustment straps 12 are provided in parallel on the upper side of the foot support sleeve 1 to improve the stability of the foot support sleeve 1.

[0046] More specifically, the calf support sleeve 2 has a second opening on its side, allowing the calf to be inserted into the sleeve. The sleeve is equipped with a second adjustment strap 22, which spans the second opening. This second opening facilitates donning of the sleeve and enhances patient comfort. For example, a second buckle is provided on one side of the second opening, with one end of the second adjustment strap 22 connected to the other side of the second opening. The second adjustment strap 22 comprises a polished section and an adhesive section. The other end of the second adjustment strap 22 spans the second opening and passes through the second buckle. The polished section and adhesive section are then bonded together. By adjusting the bonding position of the polished and adhesive sections, the circumference of the sleeve 2 can be adjusted to fit the patient's calf. Preferably, two or more second adjustment straps 22 are provided in parallel on the side of the sleeve to enhance the stability of the sleeve.

[0047] The following are the specific steps for using the ankle-foot orthosis provided in this embodiment:

[0048] (1) Loosening the first bolt and the second bolt, the patient wears the ankle-foot orthosis and fixes it with the first adjustment strap 12 and the second adjustment strap 22;

[0049] (2) Read the patient's initial assessment angle, which is the angle of the patient's joint deformity before correction;

[0050] (3) The patient actively moves or external force is used to passively move the patient to a certain angle, tighten the first and second bolts, and fix the patient. The degree at this point is read and recorded as the first correction degree.

[0051] (4) Loosen the first and second bolts, perform correction again, and read the degree at this time, which is recorded as the second correction degree;

[0052] (5) Repeat the above steps until the patient's correction requirements are met.

[0053] After multiple small corrections, the degree of each correction is recorded in real time and compared with the initial assessment angle, so that patients can intuitively feel the correction effect at any time, improve their enthusiasm, and achieve the goal of progressive correction of ankle eversion and ankle flexion and extension.

[0054] The above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include other equivalent embodiments without departing from the spirit of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. An ankle-foot orthosis, characterized in that: include: A foot fixing sleeve that can be detachably worn on the human foot; The calf fixing sleeve is detachable and can be worn on the human calf; The ankle fixing sleeve is used to be put on the ankle of the human body, is rotatably connected to the foot fixing sleeve about the X-axis, and can be fixed relative to the foot fixing sleeve by a first locking member. The ankle fixing sleeve is rotatably connected to the calf fixing sleeve about the Y-axis, and can be fixed relative to the calf fixing sleeve by a second locking member.

2. The ankle-foot orthosis according to claim 1, wherein: A first scale is provided on the side of the foot fixing sleeve, and a first pointer is fixedly provided on one side of the ankle fixing sleeve. The first pointer points to the first scale to indicate the relative angle between the ankle fixing sleeve and the foot fixing sleeve.

3. The ankle-foot orthosis according to claim 1, wherein: The first locking member is a first bolt, which is detachably connected to the foot fixing sleeve and the ankle fixing sleeve.

4. The ankle-foot orthosis according to claim 1, wherein: A second scale is provided on the rear side of the calf fixing sleeve, and a second pointer is fixedly provided on the rear side of the ankle fixing sleeve. The second pointer points to the second scale to indicate the relative angle between the ankle fixing sleeve and the calf fixing sleeve.

5. The ankle-foot orthosis according to claim 4, characterized in that One end of the second pointer is fixedly connected to the rear side of the ankle fixing sleeve, and the other end is rotatably connected to the calf fixing sleeve via a rotating shaft, and the length of the rotating shaft extends along the Y-axis direction.

6. The ankle-foot orthosis according to claim 4, characterized in that The second locking member is a second bolt, and the second bolt is detachably connected to the second pointer and the calf fixing sleeve.

7. The ankle-foot orthosis according to claim 1, wherein: The circumferences of the foot fixing sleeve and the calf fixing sleeve are adjustable.

8. The ankle-foot orthosis according to claim 1, wherein: The upper side of the foot fixing sleeve is provided with a first opening for the human foot to pass through the foot fixing sleeve. The foot fixing sleeve is provided with a first adjustment strap, and the first adjustment strap is provided across the first opening.

9. The ankle-foot orthosis according to claim 1, wherein: The side of the calf fixing sleeve is provided with a second opening for the human calf to pass through the calf fixing sleeve. The calf fixing sleeve is provided with a second adjustment strap, and the second adjustment strap is arranged across the second opening.

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