A passive hip joint limiting aid

Abstract

The present invention discloses a passive hip joint limiting auxiliary device, which is used for patients undergoing repair operations such as femoral fractures, and is composed of a waist belt, a support frame and a leg belt. The waist belt is stably and firmly wrapped around the waist of the user, the leg belt is stably and firmly wrapped around the legs of the user, and the support frame conforms to the spatial curve of the human body; the connecting hinge of the support frame limits the motion range of the hip joint to achieve a limiting function, and the preload force between the waist and the legs can be changed by adjusting the length of the support device, thereby achieving a comfortable use effect; this passive hip joint auxiliary support device can directly transfer part of the weight of the upper body of the human body to the end of the thigh, and part of the weight skips over the hip joint, thereby reducing the force on the hip joint and achieving a certain auxiliary support effect.

Description

Technical Field

[0001] The invention relates to the field of medical devices, in particular to a passive hip joint limiting assistant. Background Art

[0002] The hip joint plays a connecting role between the lower limbs and the upper body. It is the main force point for lower limb support and walking. It is of great significance to the activities of the lower limbs of the human body. During the treatment of patients with femoral head and neck fractures, femoral head trochanteric fractures, hip dislocations, hip replacements, etc., patients stay in bed for a long time, have difficulty walking with support, and have limited range of motion of the hip joint. In order to solve the above problems and inconveniences, and to improve the effective utilization rate of hospital beds, a passive hip joint auxiliary support device that conforms to the spatial curve of the human body is developed and studied. Summary of the invention

[0003] The present invention provides a hip joint limiting auxiliary device for sharing the hip joint load for patients with hip joint problems or hip joint treatment.

[0004] The technical solution adopted by the present invention is: part of the weight of the upper body is transferred to the leg straps through the waist belt, thereby reducing the force on the hip joint. In order not to affect the rotation of the hip joint, a hinge structure is designed on one side of the hip joint. In order to achieve a good support effect and reduce the impact of walking, an adjustable spring structure is added to the hip joint limit aid, and the overall length of the hip joint limit aid is adjusted while adjusting the spring preload to achieve matching with different human body heights. In order to achieve comfort in use, the overall spatial curve of the hip joint limit aid support frame is designed according to the spatial curve of the human body, which basically matches the spatial curve of the human body.

[0005] The waist belt and leg straps use sponge inner core, linen as external wrapping material, and nylon buckles as connecting devices to achieve comfortable contact with the human body and convenient loading and unloading of the hip joint limit aid; the waist belt is connected to the waist plate by rivets, and the leg straps are connected to the leg plate. The connection between the passive hip joint limit aid and the human body is achieved through the waist belt and leg straps, so that part of the weight of the upper body is transferred to the leg straps through the waist belt, thereby achieving the effect of auxiliary support.

[0006] The upper connecting plate is connected to the waist plate by rivets, which is a rigid connection, so the two cannot rotate; the upper connecting plate is connected to the upper cover plate by a connecting hinge copper column, and they are connected by a revolute pair, so they can rotate; the upper cover plate has a 40° rib on the front edge and a 30° rib on the rear edge of the revolute pair, which limits the range of rotation. The upper connecting plate can only rotate 40° forward or 30° backward around the upper cover plate, thereby limiting the forward and backward swing angle of the hip joint. The support frame can only rotate at the connecting hinge in the sagittal plane of the human body, and the rotation angle is limited, which fully limits the forward and backward movement of the hip joint. At the same time, the support frame is rigid as a whole in the transverse direction, which fully limits the lateral swing and adduction movement of the hip joint.

[0007] The handle is connected through the handle connecting column and the threaded stud; the handle connecting column fixes the bearing at a specific position of the handle connecting column through the upper and lower bearing inner stops; at the same time, the position of the bearing is limited by the upper cover plate and the lower cover plate of the bearing; in summary, the threaded stud with self-locking ability can be rotated by turning the handle. The two spring columns are connected through the spring column connector and the threaded stud. The bottom end of the spring column contacts the spring. The rotation of the threaded stud drives the spring connector to move up and down, so as to adjust the overall size and preload of the passive hip joint limit assistor, so that it can be suitable for people of a certain height. The spring is at the bottom of the telescopic cavity. The telescopic cavity and the front and rear plates limit the farthest position of the telescopic cavity through the end limit boss, which fully limits the size adjustment range of the passive hip joint limit assistor.

[0008] The telescopic cavity is connected to the lower connecting plate through rivets, and the lower connecting plate is connected to the leg plate through rivets, which fully ensures the rigidity of the support frame.

[0009] The beneficial effects of the present invention are: to address the problem of walking difficulties for patients after intertrochanteric and greater trochanteric fracture repair surgery, the present invention provides hip joint limitation and appropriate hip joint auxiliary support for patients when walking, significantly reduces the incidence rate of complications of bed rest after surgery, and at the same time provides safe exercise, increases the patient's immunity, and accelerates recovery from the disease. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an overall schematic diagram of the passive hip joint auxiliary support device of the present invention that conforms to the spatial curve of the human body.

[0011] Figure 2 It is a schematic diagram of wearing the passive hip joint auxiliary support device of the present invention which conforms to the spatial curve of the human body.

[0012] Figure 3 It is a schematic diagram of a passive hip joint auxiliary support frame that conforms to the spatial curve of the human body according to the present invention.

[0013] Figure 4 It is a cross-sectional view of a support frame of a passive hip joint auxiliary supporter that conforms to the spatial curve of the human body according to the present invention.

[0014] Figure 5 It is a front cross-sectional view of the core component of the passive hip joint auxiliary support frame of the present invention that conforms to the spatial curve of the human body.

[0015] Figure 6 It is a side sectional view of the core component of the passive hip joint auxiliary support frame of the present invention that conforms to the spatial curve of the human body.

[0016] Figure 7 This is a diagram of an upper cover plate of a passive hip joint auxiliary support device of the present invention that conforms to the spatial curve of the human body.

[0017] Figure 8 This is a fitting diagram of the passive hip joint auxiliary support device of the present invention that conforms to the spatial curve of the human body.

[0018] The markings in the figure are: A, waist belt; B, support frame; C, leg belt; B1, waist plate; B2, upper connecting plate; B3, connecting hinge; B4, rotating handle; B5, rotating handle connecting column; B6, bearing inner stopper; B7, bearing; B8 upper cover plate; B9 bearing lower cover plate;

[0019] B10, threaded stud; B11, spring column connector; B12, spring column; B13, side panel; B14, spring; B15, telescopic cavity; B16, lower connecting plate; B17, leg plate; B3-1, connecting hinge baffle; B3-2, connecting hinge copper column; B18, front and rear panels. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings.

[0021] The exemplary hip joint limiting aid is worn on the left foot, and the principle of wearing it on the right foot is similar, and the two are symmetrical about the sagittal plane of the human body.

[0022] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this example provides a passive hip joint limiting aid, including: a waist belt A, a support frame B, and a leg belt C. The support frame B includes a waist plate B1, an upper connecting plate B2, a connecting hinge B3, a connecting hinge baffle B3-1, a connecting hinge copper column B3-2, a rotary handle B4, a rotary handle connecting column B5, a bearing inner stopper B6, a bearing B7, an upper cover plate B8, a bearing lower cover plate B9, a threaded stud B10, a spring column connector B11, a spring column B12, a side plate B13, a spring B14, a telescopic cavity B15, a lower connecting plate B16, a leg plate B17, a front and rear plate B18, and an end limiting boss B19.

[0023] The passive hip joint limiter can fit the human body's spatial curve extremely well, achieving a comfortable wearing effect. The size of the hip joint limiter and the preload force of the hip joint limiter can be adjusted by rotating the rotary handle to achieve the best support effect.

[0024] In this example, the hip joint limiter is fastened to the waist through a waist belt and to the legs through a leg belt, and after adjusting the preload force and the length of the hip joint limiter, it is used for walking. When standing, the weight of the upper body is transferred across the hip joint through the hip joint limiter to the lower thigh, achieving the effect of auxiliary support.

[0025] In this example, the passive hip joint limit assist device support frame can only rotate forward at the connection hinge B3, and the rotation angle is limited, which fully limits the forward and backward movement of the hip joint. At the same time, the support frame is rigid as a whole in the lateral direction, which fully limits the lateral swing and adduction movement of the hip joint. The movement of the lower limbs wearing the hip joint limit assist device is fully restricted.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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 aid, characterized in that: It comprises a waist belt (A), a support frame (B), and a leg belt (C); the support frame (B) comprises a waist plate (B1), an upper connecting plate (B2), a connecting hinge (B3), a rotary handle (B4), a rotary handle connecting column (B5), a bearing inner stopper (B6), a bearing (B7), an upper cover plate (B8), a bearing lower cover plate (B9), a threaded stud (B10), a spring column connector (B11), a spring column (B12), a side plate (B13), a spring (B14), a telescopic cavity (B15), a lower connecting plate (B16), a leg plate (B17), a front and rear plate (B18), and an end limiting boss (B19); the connecting hinge (B3) comprises a connecting hinge baffle (B3-1) and a connecting hinge copper column (B3-2); The upper connecting plate (B2) is rigidly connected to the waist plate (B1) by rivets, and the upper connecting plate (B2) and the waist plate (B1) cannot rotate. The upper connecting plate (B2) is hinged to the upper cover plate (B8) by a connecting hinge copper column (B3-2); the front edge of the connecting hinge (B3) has a 40° rib and the rear edge has a 30° rib to limit the range of rotation. The support frame can only rotate at the connecting hinge (B3) in the sagittal plane direction of the human body, and the rotation angle is limited; The handle (B4) is connected via a handle connecting column (B5) and a threaded stud (B10); the handle connecting column (B5) fixes the bearing (B7) at a specific position of the handle connecting column (B5) via two upper and lower bearing inner stops (B6); the position of the bearing (B7) is limited by an upper cover plate (B8) and a bearing lower cover plate (B9); Two spring columns (B12) are connected through a spring column connector (B11) and a threaded stud (B10), the bottom end of the spring column (B12) contacts the spring (B14), the rotation of the threaded stud (B10) drives the spring column connector (B11) to move up and down, the spring (B14) is arranged at the bottom of the telescopic cavity (B15), and the telescopic cavity (B15) and the front and rear plates (B18) limit the farthest position of the telescopic cavity through the end limit boss (B19); The front and rear plates (B18) are connected to the upper cover plate (B8) by bolts, the side plates (B13) are connected to the upper cover plate (B8) by bolts, the handle connecting column connects the handle and the threaded stud, the spring column connector connects the spring column and the threaded stud, the spring is connected to the spring column at the top and the telescopic cavity at the bottom, the rivet connects the telescopic cavity and the lower connecting plate, the rivet connects the lower connecting plate and the leg plate, the waist belt connects the waist plate of the support frame, and the leg belt connects the leg plate of the support frame.

2. A passive hip joint limiting aid according to claim 1, characterized in that: The waist belt (A) and the leg belt (C) have a sponge inner core, and the outer wrapping material is linen, and a nylon buckle is used as a connecting device; the waist belt (A) is connected to the waist plate (B1) by rivets, and the leg belt (C) is connected to the leg plate (B17), and the connection between the passive hip joint limiting aid and the human body is realized through the waist belt (A) and the leg belt (C).

3. A passive hip joint limiting aid according to claim 1, characterized in that: The telescopic cavity (B15) is connected to the lower connecting plate (B16) via rivets, and the lower connecting plate (B16) is connected to the leg plate (B17) via rivets.

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