A passive hip joint limiting and auxiliary support device

Abstract

The present invention discloses a passive hip joint limiting auxiliary support device composed of a support rod, a limiting rod and a support for postoperative use by patients with femoral fracture repair, hip joint replacement, etc. The support connects the support rod and the limiting rod into a whole; the limiting rod fixes the lumbar thermoplastic plate and the leg thermoplastic plate to the upper body and the leg of the human body respectively through sponge nylon straps, and the footrest is tied to the foot through a sponge nylon strap to achieve wearing; the human axilla presses on the support, and the weight of the upper body is transmitted to the ground through the support rod and the footrest to achieve the supporting effect; the length of the support rod is adjusted to adapt to different human heights; the telescopic space at the lower part of the support rod is used to adapt to the change of the distance from the sole of the foot to the axilla when the human body walks; the limiting rod limits the movement of the hip joint through a limiting ball hinge; the auxiliary support for the patient and the hip joint limiting effect are realized.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a passive hip joint limiting and auxiliary support device. Background Art

[0002] The weight of the upper body of the human body is transmitted to the lower limbs through the hip joints, and the hip joints affect movements such as walking, running, and jumping of the human body. When the human body is externally impacted resulting in femoral fractures, femoral head and neck fractures, femoral head trochanter fractures, hip joint dislocations, etc., after fracture patients are surgically repaired with bone plates, intramedullary nails, etc. or after hip joint replacement in patients, in order to ensure safety, the hip joints of these patients cannot bear excessive loads; at the same time, lying in bed for a long time will affect the body's recovery. Therefore, it is necessary to develop a passive hip joint limiting and auxiliary support device to help patients get out of bed for safe exercise, which can both support the weight of the human body and limit the range of motion of the hip joints. Summary of the Invention

[0003] The present invention aims at patients with hip joint problems or hip joint treatments, and provides a hip joint limiting and auxiliary device for sharing the load of the hip joints.

[0004] The technical solution adopted by the present invention is as follows: The lumbar thermoplastic plate on the upper part of the limiting rod is fixed to the upper body of the human body, and the leg thermoplastic plate on the lower part of the limiting rod is fixed to the legs of the human body. The movement range of the human hip joint is restricted by the hip hinge to achieve the purpose of limiting. The footrest of the support rod is connected to the sole of the human body, and the upper end of the support rod is connected to the support. When the support rod needs to bear weight, the human body presses the support with the upper half of the body through the armpit, and transmits the weight through the support rod to the footrest and finally to the ground.

[0005] In order to improve the comfort of wearing and the convenience of disassembly, sponge inner cores are pasted inside the lumbar thermoplastic plate and the leg thermoplastic plate to increase the contact area with the human body; the lumbar thermoplastic plate, the leg thermoplastic plate and the footrest are fixed to the body part and the foot of the human body by sponge nylon straps and buckles.

[0006] The ball hinge pair of the limiting rod is specially designed and consists of a waist rod, a hip hinge and a hip hinge sleeve. The movement range of the hip hinge is restricted by the special shape of the hip hinge sleeve; through design, this ball hinge pair can restrict the movement of the hip joint, with a forward swing of 30°, a backward swing of 7°, an abduction of 10°, and an adduction of 7°. Movements beyond this range will be restricted. The support ball hinge pair of the support rod consists of a support, a support hinge and a support hinge cover. The movement range of this ball hinge pair is a forward swing of 30°, a backward swing of 30°, an abduction of 30°, and an adduction of 30°; the footrest ball hinge pair of the support rod consists of a footrest, a footrest hinge and a footrest hinge cover. The movement range of this ball hinge pair is a forward swing of 30°, a backward swing of 30°, an abduction of 30°, and an adduction of 30°; these two ball hinge pairs increase the compatibility between the movement of the support rod and the movement of the human body, achieving the effect of increasing the comfort of wearing.

[0007] The relative positions of the lower sleeve rod and the lower sliding rod change to adapt to the change in the straight-line distance between the sole of the foot and the armpit when a person walks. When a person stands upright, the straight-line distance from the armpit to the sole of the foot is the sum of the lower leg length, the thigh length, and the body length, and the distance between the two is the longest at this time. When a person walks, the hip joint bends and the knee joint bends. From the fact that the sum of the two sides of a triangle is greater than the third side, it can be deduced that the straight-line distance from the armpit to the sole of the foot is the shortest at this time. The change range of the straight-line distance between the armpit and the sole of the foot needs to be equal to the movement range of the lower sleeve rod and the lower sliding rod of the moving pair, which conforms to the geometric parameters of human walking and ensures the comfort of wearing.

[0008] The beneficial effects of the present invention are as follows: For the fracture repair operations of various parts of the femur, after fixation with intramedullary nails or bone plates, the problem that patients have difficulty walking. After wearing, it provides hip joint limit and reliable hip joint support for patients to walk, reduces the bedridden time of patients, reduces the incidence probability of complications during postoperative bed rest, increases the activity level of patients, increases the immunity of patients, and accelerates the recovery of the condition. Brief Description of the Drawings

[0009] Figure 1 is the overall wearing schematic diagram of a passive hip joint limit and auxiliary support device of the present invention.

[0010] Figure 2 is the three-dimensional axonometric schematic diagram of a passive hip joint limit and auxiliary support device of the present invention.

[0011] Figure 3 is the three-dimensional front view and left view schematic diagram of a passive hip joint limit and auxiliary support device of the present invention.

[0012] Figure 4 is the local detailed schematic diagram after full-section of a passive hip joint limit and auxiliary support device of the present invention.

[0013] Figure 5 is the one-quarter sectional view schematic diagram of the hip joint ball hinge of a passive hip joint limit and auxiliary support device of the present invention.

[0014] The markings in the figure are: A, support rod; B, limit rod; C, support; A1, support hinge cover; A2, support hinge; A3, upper slide rail; A4, upper slide rod; A5, lower sleeve rod; A6, lower slide rod; A7, footrest hinge; A8, footrest hinge cover; A9, footrest; B1, chest rod; B2, lumbar thermoplastic plate; B3, lumbar rod; B4, hip hinge sleeve; B5, hip hinge; B6, leg rod; B7, leg thermoplastic plate. Detailed Embodiment

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] The exemplary limit and auxiliary support device is worn on the left foot, and the principle of wearing on the right foot is similar to it, and the two are symmetrical about the sagittal plane of the human body.

[0017] As Figure 1 、 Figure 2 and Figure 4 shown, this example provides a passive hip joint limiting auxiliary support device, including: a support rod (A), a limiting rod (B), and a support (C); the support rod (A) includes a support hinge cover (A1), a support hinge (A2), an upper slide rail (A3), an upper slide bar (A4), a lower sleeve rod (A5), a lower slide bar (A6), a footrest hinge (A7), a footrest hinge cover (A8), and a footrest (A9); the support rod (B) includes a chest rod (B1), a lumbar thermoplastic plate (B2), a lumbar rod (B3), a hip joint hinge sleeve (B4), a hip joint hinge (B5), a leg rod (B6), and a leg thermoplastic plate (B7); the support rod (A) and the limiting rod (B) are connected into a whole through the support (C), the support rod (A) realizes the support function, and the limiting rod (B) realizes the function of limiting the movement range of the hip joint. In the figure, the limiting auxiliary support device is worn on the left foot, and the principle of wearing it on the right foot is similar, and the two are symmetric about the sagittal plane of the human body.

[0018] In this example, sponge inner cores can be installed on the inner walls of the lumbar thermoplastic plate and the leg thermoplastic plate according to actual needs to increase the contact area between the thermoplastic plate and the human body and improve the wearing comfort; sponge nylon straps are used to connect to the human body through the edge square holes of the lumbar thermoplastic plate and the leg thermoplastic plate, and sponge nylon straps are used to connect to the human body foot plate through the square holes on the edge of the footrest. The connection method uses buckles and Velcro; the lumbar thermoplastic plate is firmly connected to the chest and waist of the human body, the leg thermoplastic plate is firmly connected to the leg of the human body, and the footrest is firmly connected to the foot plate of the human body to realize the wearing of the hip joint limiting auxiliary support device.

[0019] In this example, the chest rod is connected to the support through bolts; the chest rod and the lumbar rod are connected to the lumbar thermoplastic plate through rivets, and the leg rod is connected to the leg thermoplastic plate through rivets; the shape of the lumbar thermoplastic plate conforms to the shape contour of the chest and waist parts of the human body, and the shape of the leg thermoplastic plate conforms to the shape contour of the thigh of the human body; the end of the lumbar rod is connected to the hip joint hinge in the form of a spherical hinge pair, and the movement of the hip joint hinge is restricted by the hip joint hinge sleeve. After the human body wears it, the hip joint can swing forward 30°, swing backward 7°, abduct 10°, and adduct 7°. Movements exceeding these angles will be restricted; the hip joint hinge sleeve and the lumbar rod are connected by bolts.

[0020] In this example, the support hinge and the support are connected by a spherical hinge, and they are connected into a rotatable whole by a support cover and bolts; the support hinge and the upper slide rail are connected into a fixed whole by bolts; after adjusting the relative positions of the upper slide rail and the upper slide rod, they are fixed with bolts to realize the length change of the support rod to adapt to different heights; the upper slide rod and the lower sleeve rod are connected into a fixed whole by bolts; the lower sleeve rod and the lower slide rod are connected by a sliding pair, and the movement range of the sliding pair is 120 mm, and this data changes appropriately according to different human heights; the lower slide rod and the footrest hinge are connected into a fixed whole by bolts; the footrest hinge and the footrest are connected by a spherical hinge pair, and they are connected into a rotatable whole by a footrest hinge cover and bolts.

[0021] In this example, the movement range of the spherical hinge pair of the support hinge and the support is 30° of forward swing, 30° of backward swing, 30° of abduction, and 30° of adduction. The movement range of this spherical hinge pair should be greater than the range after the hip joint movement of the limit rod is limited; the movement range of the spherical hinge pair of the footrest hinge and the footrest is 30° of forward swing, 30° of backward swing, 30° of abduction, and 30° of adduction. The movement range of this spherical hinge pair should conform to the movement range of the ankle joint. When the human body is upright, the relative positions of the lower sleeve rod and the lower slide rod are the farthest, and when the left foot steps to the farthest, the relative positions of the lower sleeve rod and the lower slide rod are the closest, and the load-bearing function can be realized when a person walks.

[0022] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A passive hip joint limiting and auxiliary support device, characterized in that: It includes a support rod (A), a limiting rod (B), and a support (C); the support rod (A) includes a support hinge cover (A1), a support hinge (A2), an upper slide rail (A3), an upper slide rod (A4), a lower sleeve rod (A5), a lower slide rod (A6), a footrest hinge (A7), a footrest hinge cover (A8), and a footrest (A9); the limiting rod (B) includes a chest rod (B1), a lumbar thermoplastic plate (B2), a waist rod (B3), a hip hinge sleeve (B4), a hip hinge (B5), a leg rod (B6), and a leg thermoplastic plate (B7); the support rod (A) and the limiting rod (B) are connected into a whole through the support (C); The chest rod (B1) is connected to the support (C) by bolts; the chest rod (B1) and the waist rod (B3) are respectively connected to both ends of the lumbar thermoplastic plate (B2) by rivets, and the leg rod (B6) is connected to the leg thermoplastic plate (B7) by rivets; the shape of the lumbar thermoplastic plate (B2) conforms to the shape contour of the human chest and waist parts, and the shape of the leg thermoplastic plate (B7) conforms to the shape contour of the human thigh; the end of the waist rod (B3) is connected to the hip hinge (B5) in the way of a spherical hinge pair, and the movement of the hip hinge (B5) is restricted by the hip hinge sleeve (B4); the movement range of the hip hinge is: 30° of forward swing, 7° of backward swing, 10° of abduction, and 7° of adduction; the hip hinge sleeve (B4) and the waist rod (B3) are connected by bolts, and the leg rod (B6) is connected to the hip hinge (B5); The support hinge (A2) and the support (C) are connected in the way of a spherical hinge pair, and they are connected into a rotatable whole by the support hinge cover (A1) and bolts; the support hinge (A2) and the upper slide rail (A3) are connected into a fixed whole by bolts; after adjusting the relative positions of the upper slide rail (A3) and the upper slide rod (A4), they are fixed with bolts; the upper slide rod (A4) and the lower sleeve rod (A5) are connected into a fixed whole by bolts; the lower sleeve rod (A5) and the lower slide rod (A6) are connected by a sliding pair, and the movement range of the sliding pair is 120 mm; the lower slide rod (A6) and the footrest hinge (A7) are connected into a fixed whole by bolts; the footrest hinge (A7) and the footrest (A9) are connected by a spherical hinge pair, and they are connected into a rotatable whole by the footrest hinge cover (A8) and bolts; The movement range of the spherical hinge pair of the support hinge (A2) and the support (C) is 30° of forward swing, 30° of backward swing, 30° of abduction, and 30° of adduction; the movement range of the spherical hinge pair of the footrest hinge (A7) and the footrest (A9) is 30° of forward swing, 30° of backward swing, 30° of abduction, and 30° of adduction.

2. The passive hip joint limiting and assisting support device according to claim 1, wherein: Sponge inner cores are installed on the inner walls of the lumbar thermoplastic plate (B2) and the leg thermoplastic plate (B7); sponge nylon straps are used to connect with the human body through the square holes at the edges of the lumbar thermoplastic plate (B2) and the leg thermoplastic plate (B7), and sponge nylon straps are used to connect with the human foot plate through the square holes at the edge of the footrest (A9), and the connection method adopts buckles and magic tapes; the lumbar thermoplastic plate (B2) is firmly connected to the chest and waist of the human body, the leg thermoplastic plate (B7) is firmly connected to the legs of the human body, and the footrest (A9) is firmly connected to the foot plate of the human body.

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