Foot drop prevention orthosis for spinal cord injury
By designing anti-foot sagging orthosis with curved plates, lifting side plates and V-shaped connecting plates, local joint pressure uneven and muscle atrophy caused by poor foot fixation in the prior art is solved, and the stability and blood circulation are improved, and the patient's standing recovery is promoted.
Patent Information
- Application Number
- CN202510180656.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-07-22
AI Technical Summary
The existing anti-foot sagging measures cannot target the patient's feet, resulting in low fit in the foot, resulting in uneven local joint pressure and poor blood circulation, which in turn causes joint stiffness and muscle atrophy.
An anti-foot sagging orthosis including a curved plate, a lifting side plate and a V-shaped connecting plate was designed. The curved plate was deformed by the weight of the patient's feet and legs. The V-shaped connecting plate drove the lifting side plate to rotate and fit the soles of the feet, forming an S-shaped structure, which conforms to the ergonomic design. The convex panel and concave panel on the surface of the lifting side plate are opposite to each other to fit the curve of the foot and avoid local uneven force.
Effectively slows muscle atrophy and relieves joint stiffness, maintains foot stability, promotes blood circulation, adjusts lifting strength to adapt to different patients, and improves the practicality and safety of the device.
Smart Images
Figure CN120346034A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of nasal breathing rehabilitation. More specifically, the present invention is an anti-foot-drop orthosis for spinal cord injury. Background Art
[0002] Spinal cord injury is caused by various pathogenic factors that damage the structure and function of the spinal cord, resulting in spinal cord dysfunction below the injury level, including sensory and motor dysfunction, abnormal reflexes, and corresponding pathological changes such as urinary and fecal incontinence. At the same time, due to the long-term immobility of the joints of patients who have lost the active movement function, joint contracture and muscle atrophy are the most common complications of spinal cord injury patients. Among them, since most patients rest in a lying position, their feet cannot be controlled autonomously. Therefore, during lying-in recuperation, the problem of foot drop will occur. To prevent foot drop, medical staff can pad the lower limbs of the patient with soft pillows to keep the limb in a functional position, so as to slow down the atrophy of the patient's foot muscles and provide a basis for the later rehabilitation of the patient.
[0003] The current anti-foot-drop measures cannot specifically surround and fix the patient's foot. The measure of using a soft pad for fixation can only assist in correcting the patient's foot in a single direction. Therefore, the fit with the foot is not high. Poor fit will cause uneven overall force on the foot, easily resulting in excessive pressure on local joints of the foot and poor blood circulation. Long-term uneven force will cause local joint stiffness, ankylosis, and aggravate muscle atrophy, which is not conducive to the later standing rehabilitation of the patient. Summary of the Invention
[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide an anti-foot-drop orthosis for spinal cord injury. By setting an arc plate, a lifting side plate, and a V-shaped connecting plate, first place the foot above the arc plate. At this time, using the weight of the patient's foot and leg, the entire arc plate can be squeezed and deformed downward. Subsequently, the V-shaped connecting plate drives the lifting side plate to rotate and move towards one side of the arc plate, and then the lifting side plate is fitted and pushed to the position of the patient's sole. By using the convex plate on the surface of the lifting side plate to form an S-shaped setting as a whole, it can fully fit the arc of the human foot sole, effectively slow down the muscle atrophy, and relieve joint stiffness and other conditions, so as to solve the problems raised in the above background art.
[0005] To achieve the above object, the present invention provides the following technical solution: An anti-foot-drop orthosis for spinal cord injury, including an arc plate. On the left and right sides of the arc plate, a base plate and a lifting side plate are respectively arranged. A V-shaped connecting plate is integrally formed at the connection between the arc plate and the lifting side plate. A pair of limiting side plates are symmetrically arranged on both sides of the surface of the lifting side plate. Fixing holes are opened on the surface of the base plate. The arc convex direction of the arc plate is designed to be vertically upward; The lifting side plate includes a convex panel and a concave panel. The overall curvature of the convex panel is greater than that of the concave panel, and the overall track length of the convex panel is less than that of the concave panel. A reference line is drawn between the convex panel and the concave panel, and the distances from this reference line to the deepest concave parts of the arcs of the convex panel and the concave panel are the same. The protruding directions of the convex panel and the concave panel are distributed oppositely with reference to the reference line and jointly form an S-shaped structure; The overall inner included angle of the V-shaped connecting plate is A, and A satisfies the following range: 90° ≤ A < 180°. The overall track shape of the limiting side plate is adapted to the track of the lifting side plate, and the limiting side plate gradually distributes in an involute posture from the side close to the arc plate to the side of the lifting side plate. A pair of the limiting side plates jointly form an outward-facing V shape. One end of the limiting side plate extends to one side of the convex panel with a spacing, and the other end of the limiting side plate extends to the upper oblique side of the V-shaped connecting plate with a spacing.
[0006] In a preferred embodiment, the left and right sides of the arc plate are on the same horizontal plane, and an anti-slip rubber pad material is pasted on the top surface of the arc plate.
[0007] In a preferred embodiment, the substrate is a flat straight surface as a whole, and the substrate as a whole can be fixed by driving fixing screws into the interior of the fixing holes.
[0008] In a preferred embodiment, the arc plate, the lifting side plate, and the V-shaped connecting plate are made of alloy material or pp material as a whole, and the overall stiffness of the V-shaped connecting plate is greater than the overall stiffness of the arc plate and the lifting side plate.
[0009] In a preferred embodiment, the corners of the arc plate and the limiting side plate are all designed with rounded corners. The overall height of the limiting side plate is equal everywhere and is in the range of 3 cm to 5 cm.
[0010] The technical effects and advantages of the present invention: The present invention is provided with an arc plate, a lifting side plate, and a V-shaped connecting plate; by utilizing the mutual cooperation of the several components, when the foot is placed above the arc plate, at this time, by using the weight of the patient's foot and leg, the arc plate as a whole can be deformed downward under force. Subsequently, the V-shaped connecting plate drives the lifting side plate to rotate and move towards one side of the arc plate, and then the lifting side plate is pushed to the sole position of the patient to fix and lift it, providing support and protection for it. By using the design that the protruding directions of the convex panel and the concave panel on the surface of the lifting side plate are opposite, the whole is formed into an S-shaped setting, which can fit the arc of the human foot sole and conforms to the ergonomic design; At the same time, the concave panel is effectively attached to the middle and the rear part of the patient's sole, thereby maintaining the stability of the entire foot and avoiding uneven stress on local joints and poor blood circulation in the foot. Then, the convex panel abuts against the front part of the patient's sole, and the toes are moved toward one side of the patient, thereby driving the ankle to rotate upward and twist, fully driving the muscles and ligaments on the patient's sole to tense under stress, effectively slowing down muscle atrophy and relieving joint stiffness, etc., facilitating the patient's subsequent systematic standing rehabilitation training. Brief Description of the Drawings
[0011] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the side structure of the present invention; Figure 3 is a three-dimensional schematic diagram of the arc plate of the present invention; Figure 4 is a three-dimensional schematic diagram of the right side of the present invention; Figure 5 is a three-dimensional schematic diagram of the left side of the present invention; Figure 6 is a multi-angle schematic diagram of the overall structure of the present invention; Figure 7 is a left view and a right view of the overall structure of the present invention; Figure 8 is a semi-sectional schematic diagram of the present invention; Figure 9 is a schematic diagram of the convex panel and the concave panel of the present invention; Figure 10 is a schematic diagram of the initial state and the working state of the overall structure of the present invention.
[0012] The reference numerals are: 1, arc plate; 2, substrate; 3, lifting side plate; 4, V-shaped connecting plate; 5, limiting side plate; 6, fixing hole; 31, convex panel; 32, concave panel. Detailed Description of the Invention
[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0014] As shown in the attached Figure 1 to the attached Figure 10An anti-foot-drop orthosis for spinal cord injury shown in the figure includes an arc-shaped plate 1. On the left and right sides of the arc-shaped plate 1, a base plate 2 and a lifting side plate 3 are respectively arranged. At the connection of the arc-shaped plate 1 and the lifting side plate 3, a V-shaped connecting plate 4 is integrally formed. On both sides of the surface of the lifting side plate 3, a pair of limit side plates 5 are symmetrically arranged. On the surface of the base plate 2, a fixing hole 6 is provided. The arc-shaped convex direction of the arc-shaped plate 1 is designed to be vertically upward. With the above design, the whole device can be fixed by driving a fixing screw into the fixing hole 6 on the surface of the base plate 2 to facilitate subsequent use; The lifting side plate 3 includes a convex panel 31 and a concave panel 32. The overall curvature of the convex panel 31 is greater than that of the concave panel 32, and the overall track length of the convex panel 31 is less than that of the concave panel 32. A reference line is made in the middle of the convex panel 31 and the concave panel 32, and the distances from this reference line to the most concave parts of the arcs of the convex panel 31 and the concave panel 32 are the same. The convex directions of the convex panel 31 and the concave panel 32 are distributed oppositely with reference to the reference line and jointly form an S-shaped structure. With the special shape design of the convex panel 31 and the concave panel 32, the arc of the human foot sole can be fully fitted, which conforms to the ergonomic design. At the same time, the concave panel 32 is effectively fitted to the middle and the rear part of the patient's foot sole to keep the whole foot stable and avoid uneven force and unsmooth blood circulation in the local joints of the foot. Then, the convex panel 31 abuts against the position of the patient's forefoot, and the toes are twisted to one side of the patient, thereby driving the ankle to rotate upward, and then fully driving the muscles and ligaments of the patient's foot sole to be stressed and tightened, effectively slowing down the situation of muscle atrophy; The overall internal included angle of the V-shaped connecting plate 4 is A, and A satisfies the following range: 90° ≤ A < 180°. The overall trajectory shape of the limiting side plate 5 is adapted to the trajectory of the lifting side plate 3, and the limiting side plate 5 is gradually distributed in an involute posture from the side close to the arc plate 1 to the side of the lifting side plate 3. A pair of the limiting side plates 5 together form an outward-facing V shape. One end of the limiting side plate 5 extends to one side of the convex panel 31 with a gap left, and the other end of the limiting side plate 5 extends to the upper oblique side of the V-shaped connecting plate 4 with a gap left. By setting the range of the included angle of the V-shaped connecting plate 4 as above, it can be ensured that the V-shaped connecting plate 4 can adjust the included angle range according to the morphological changes of the patient's own foot. For example, if the patient has severe muscle atrophy and foot drop, the degree of the included angle A can be reduced at this time, and it can be set to tend to the range of 90° - 120°. The closer the degree of the V-shaped connecting plate 4 is to 90°, the greater the distance of its deformation along with the arc plate 1, and thus the stronger the pre-tightening force and the auxiliary support effect of the lifting side plate 3 on one side of the V-shaped connecting plate 4 on the patient's sole, so as to ensure the recovery of patients with severe muscle atrophy. When the patient's symptoms are mild, the degree of the included angle A is increased, and it is set to tend to the angle range of 180°, thereby reducing the pre-tightening force of the lifting side plate 3 on the patient's sole to adapt to patients with mild symptoms; By setting a pair of the limiting side plates 5 together to form an outward-facing V shape, it conforms to the morphological characteristics of the wider front sole and narrower rear sole of the human body. At the same time, it can effectively limit both sides of the patient's foot to prevent it from shifting and dislocating during auxiliary positioning and orthosis, and further improve the practicability of the device.
[0015] The left and right sides of the arc plate 1 are on the same horizontal plane, and a layer of anti-slip rubber pad material is pasted on the top surface of the arc plate 1. The substrate 2 is a flat straight surface as a whole, and the substrate 2 can be fixed by driving fixing screws into the fixing holes 6.
[0016] For specific reference, see the attached Figure 3 and the attached Figure 4 . The overall materials of the arc plate 1, the lifting side plate 3, and the V-shaped connecting plate 4 are alloy materials or pp materials, and the overall stiffness of the V-shaped connecting plate 4 is greater than the overall stiffness of the arc plate 1 and the lifting side plate 3.
[0017] The implementation method is specifically as follows: By setting different stiffnesses of the V-shaped connecting plate 4, the arc-shaped plate 1, and the lifting side plate 3, when the patient presses on the upper part of the arc-shaped plate 1 with the foot, the entire arc-shaped plate 1 will be compressed and deformed downward by its own elasticity. Since the V-shaped connecting plate 4 has high strength, the overall V-shaped connecting plate 4 hardly deforms, thereby driving the lifting side plate 3 to rotate and move towards one side of the arc-shaped plate 1, and then fitting and pushing the lifting side plate 3 to the sole position of the patient to assist in fixing and lifting it, providing support and protection for it. At the same time, when the arc-shaped plate 1, the lifting side plate 3, and the V-shaped connecting plate 4 are made of alloy materials as a whole, it can ensure that the overall structure has excellent elasticity and is not prone to permanent deformation. At the same time, the proportion of the alloy can be changed to adjust the stiffness between the V-shaped connecting plate 4, the arc-shaped plate 1, and the lifting side plate 3. When the arc-shaped plate 1, the lifting side plate 3, and the V-shaped connecting plate 4 are made of PP materials as a whole, toughening agents can be added to the materials required in different parts to change and adjust the stiffness between the V-shaped connecting plate 4, the arc-shaped plate 1, and the lifting side plate 3.
[0018] Specifically refer to the attached Figure 6 and the attached Figure 8 , the corners of the arc-shaped plate 1 and the limiting side plate 5 are both designed with rounded corners. The overall height of the limiting side plate 5 is equal everywhere and is within the range of 3 cm to 5 cm.
[0019] The implementation method is specifically as follows: By designing the corners of the arc-shaped plate 1 and the limiting side plate 5 with rounded corners, it is not easy to cause bumps and injuries to the patient's skin during use, ensuring the safety of the overall device. At the same time, by setting the height of the limiting side plate 5, the two sides of the patient's foot can be effectively restricted, preventing deviation and dislocation during auxiliary positioning and orthosis, and further improving the practicality of the device.
[0020] The working principle of the present invention: The first step: First, the operator normally fixes and installs the whole device through the fixing screws, and fixes the whole device by driving the fixing screws into the fixing holes 6 on the surface of the substrate 2, and then normally uses the device. At the same time, the patient lies flat on the hospital bed.
[0021] Step 2: First, the doctor moves the patient's lower limbs to the top of the curved plate 1, and ensures that the patient's feet are located directly above the curved plate 1, and then naturally places the feet on the curved plate 1. At this time, the weight of the patient's feet and legs can be used to squeeze and deform the curved plate 1 as a whole, so that its curvature gradually decreases and deforms toward a straight surface. The overall stiffness of the V-shaped connecting plate 4 is greater than the overall stiffness of the curved plate 1 and the lifting side plate 3. Therefore, the V-shaped connecting plate 4 as a whole will not be affected by the squeezing and deformation of the curved plate 1, and its overall structure will hardly be deformed. Therefore, the lifting side plate 3 is driven by the V-shaped connecting plate 4 to rotate toward one side of the curved plate 1, and then the lifting side plate 3 is pushed to the sole of the patient's foot to assist in fixing and lifting it, provide support and protection for it, and utilize the convex surface of the lifting side plate 3 The convex directions of the panel 31 and the concave panel 32 are designed to be opposite, forming an S-shaped setting as a whole, which can fully fit the curvature of the human foot and conform to ergonomic design. At the same time, the concave panel 32 is effectively fitted to the middle and rear soles of the patient's feet to maintain the stability of the entire foot and avoid uneven force and poor blood circulation in the local joints of the foot. Then, the convex panel 31 is pressed against the patient's forefoot to point to one side of the patient for twisting, thereby driving the ankle to rotate and twist upward, thereby fully driving the muscles and ligaments of the patient's foot to be tightened, effectively slowing down muscle atrophy, and relieving joint stiffness, etc., so as to facilitate the patient to carry out systematic standing rehabilitation training in the later stage. Finally, the device completes the operations of preventing the patient's foot from falling, reducing excessive pressure on local joints, and preventing muscle atrophy.
[0022] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aging and severely worn parts inside the device.
[0023] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
Claims
1. An orthosis for preventing foot drop in spinal cord injury, characterized in that: It includes an arc-shaped plate. On the left and right sides of the arc-shaped plate, a base plate and a supporting side plate are respectively arranged. At the connection of the arc-shaped plate and the supporting side plate, a V-shaped connecting plate is integrally formed. On both sides of the surface of the supporting side plate, a pair of limiting side plates are symmetrically arranged. On the surface of the base plate, fixing holes are provided. The arc convex direction of the arc-shaped plate is designed to be vertically upward. The supporting side plate includes a convex panel and a concave panel. The overall curvature of the convex panel is greater than that of the concave panel, and the overall track length of the convex panel is less than the overall track length of the concave panel. A reference line is made in the middle of the convex panel and the concave panel, and the distances from this reference line to the most concave parts of the arcs of the convex panel and the concave panel are the same. The convex directions of the convex panel and the concave panel are oppositely distributed with reference to the reference line and jointly form an S-shaped structure; The overall inner included angle of the V-shaped connecting plate is A, and A satisfies the following size range: 90° ≤ A < 180°. The overall track shape of the limiting side plate is adapted to the track of the supporting side plate, and the limiting side plate is gradually distributed in an involute posture from the side close to the arc-shaped plate to the side of the supporting side plate. The pair of limiting side plates jointly form an outward-facing V shape. One end of the limiting side plate extends to one side of the convex panel with a spacing, and the other end of the limiting side plate extends to the upper oblique side of the V-shaped connecting plate with a spacing.
2. The anti-dropfoot orthosis for spinal cord injury according to claim 1, characterized in that: The left and right sides of the arc-shaped plate are on the same horizontal plane, and an anti-slip rubber pad material is pasted on the top surface of the arc-shaped plate.
3. The anti-dropfoot orthosis for spinal cord injury according to claim 1, characterized in that: The base plate is a flat straight surface as a whole, and the base plate as a whole can be fixed by driving fixing screws into the interior of the fixing holes.
4. The anti-dropfoot orthosis for spinal cord injury according to claim 1, characterized in that: The overall materials of the arc-shaped plate, the supporting side plate, and the V-shaped connecting plate are alloy materials or pp materials, and the overall stiffness of the V-shaped connecting plate is greater than the overall stiffness of the arc-shaped plate and the supporting side plate.
5. The anti-dropfoot orthosis for spinal cord injury according to claim 1, characterized in that: The corners of the arc-shaped plate and the limiting side plate are all designed with rounded corners. The overall height of the limiting side plate is equal everywhere and is within the range of 3 cm to 5 cm.