CN211131955U - Angle-adjustable lower limb fixing device for knee joint replacement surgery in orthopedics department - Google Patents

Abstract

The utility model provides a lower limbs fixing device is used in knee joint replacement operation of orthopedics of adjustable type of angle, be equipped with the protruding pad of location and be located the fixed plate face on the protruding pad right side of location on the face of fixed plate left side face and be equipped with the supporting pad, be equipped with thigh strutting arrangement on the face of fly leaf right side, it is connected with the drive arrangement who locates the fly leaf bottom surface to be equipped with foot strutting arrangement and foot strutting arrangement on the face of fly leaf, and make foot strutting arrangement move left or move right along the length direction of fly leaf under drive arrangement's drive, realize that patient's low limbs are. The utility model discloses can realize that the foot is located the crooked fixed or the extension of loosening of patient's low limbs on foot strutting arrangement, with patient's shank front and back location, avoid the phenomenon of rocking around the in-process patient's shank of performing the operation by thigh strutting arrangement with patient's thigh support location back, can adjust the angle of fly leaf and fixed plate, realize the regulation of patient's knee angle, the doctor of being convenient for performs the operation, improves the operation quality.

Description

Angle-adjustable lower limb immobilization device for orthopaedic knee replacement surgery

technical field

The utility model belongs to the technical field of medical treatment, in particular to an angle-adjustable lower limb fixing device for orthopaedic knee joint replacement surgery.

Background technique

The knee joint is an important weight-bearing joint of the lower limbs, and its structure and function are the most complex among the human joints. Degenerative osteoarthropathy of the knee is a common disease of the elderly, and the reported incidence of symptomatic knee osteoarthritis is 35% in men over the age of 50 and as high as 74% in women. More and more patients with severe knee osteoarthritis require artificial knee replacement. Knee replacement can relieve knee pain, improve knee function, correct knee deformity and achieve long-term stability. At present, when patients undergo knee replacement surgery, they need to bend their lower limbs to the greatest extent during the operation. Both patients and medical staff are concerned. It is impossible to maintain the maximum bending of the lower limbs for a long time, which greatly affects the effect of the operation, and also consumes the physical strength of the medical staff. It is necessary to improve the above problems.

Utility model content

The technical problem solved by the utility model is to provide an angle-adjustable lower limb fixation device for orthopaedic knee replacement surgery. The foot support device is arranged on the movable plate, and the foot support is driven by the driving device arranged at the bottom of the movable plate. After the device moves along the length direction of the movable plate, the lower limbs of the patient whose feet are positioned on the foot support device can be bent, fixed or stretched. The patient's legs are positioned back and forth to avoid the phenomenon of the patient's legs shaking back and forth during the operation. At the same time, the angle between the movable plate and the fixed plate can be adjusted to realize the adjustment of the patient's knee angle, which is convenient for doctors to operate and improve the quality of the operation.

The technical scheme adopted by the utility model: an angle-adjustable lower limb fixing device for orthopaedic knee replacement surgery, which has an operating bed board, which is formed by connecting a movable board and a fixed board in an adjustable angle. There is a positioning convex pad on the surface and a support pad is provided on the fixed plate on the right side of the positioning convex pad, and a height-adjustable thigh support device is provided on the right side of the movable plate. There is a foot support device on the upper part and the foot support device is connected with the driving device arranged on the bottom surface of the movable plate, and under the driving of the driving device, the foot support device is moved left or right along the length direction of the movable plate to realize the foot part. The patient's lower extremity, positioned on the foot support, is flexed for immobilization or release for extension.

Wherein, the thigh support device includes a support tube, a screw rod, a thigh support seat and a nut seat, and the lower end of the support tube, which is provided with an escape hole on the right side of the movable plate, and is concentric with the escape hole is fixed on the movable plate, The lower end of the nut seat is rotatably mounted on the upper end of the support tube, and the lower end of the screw rod which is adapted and connected with the nut seat is inserted into the support tube. The support surface of the thigh support seat is provided with a protective soft pad, the bottom of the thigh support seat is movably connected with the upper end of the screw rod, and the height of the thigh support seat is adjusted by rotating the nut seat.

Further, the foot support device includes a guide wheel and a foot support seat, a guide groove is formed on the board surface in the length direction of the movable plate, and a guide slot is formed on the groove surface of the guide groove, and the guide wheel is placed on the movable plate. The upper end of the connecting plate in the guide groove and fixed on the guide wheel axle is rotatably connected with the bottom of the foot support seat, the guide wheel axle is fixedly connected with one end of the connecting frame, and the other end of the connecting frame is arranged on the bottom surface of the movable plate and passes through the guide length. The upper end of the driving device of the hole is fixedly connected, the side plate of the foot support seat is an arc-shaped positioning plate, and the lower end of the arc-shaped positioning plate is provided with a waist-shaped long hole for positioning the patient's foot, and the wall of the waist-shaped long hole is The supporting surface of the foot support seat is provided with protective soft pads.

Further, the driving device includes an electric telescopic cylinder, a connecting short arm, a roller and a bracket, the electric telescopic cylinder is arranged in parallel with the movable plate and is fixed on the bottom surface of the movable plate, and the end of the telescopic rod of the electric telescopic cylinder is fixed with The connecting short arms on both sides of the roller axle are connected by pins, the lower end of the bracket is fixedly connected with the roller axle, and the connecting column in the middle of the upper end of the bracket passes through the guide long hole provided on the movable plate surface, and then passes through the connecting frame and the foot. The support device is connected, and the telescopic rod of the electric telescopic cylinder telescopically drives the foot support device to move left or right along the length direction of the movable plate to achieve bending, fixing or loosening and stretching of the lower limbs of the patient whose feet are positioned on the foot support device.

Further, both sides of the right end of the movable plate and the middle part of the left end of the fixed plate are made with gaps, the right end of the movable plate is inserted into the gap in the middle part of the left end of the fixed plate, and the middle part of the filament rod that is rotatably connected with the protrusions on both sides of the left end of the fixed plate is connected to the gap. The right end of the movable plate is fixedly connected, one end of the long screw rod is formed with a hexagonal groove, the hexagonal head at the end of the handle is adapted to the hexagonal groove, and the angle of the movable plate can be adjusted by rotating the handle.

The advantages of the present utility model compared with the prior art:

1. In this technical solution, a foot support device is arranged on the movable plate, and the foot support device is driven by the driving device at the bottom of the movable plate to move along the length direction of the movable plate, that is, the telescopic rod of the electric telescopic cylinder is extended or shortened, After driving the guide wheel to move left or right along the guide groove, the lower limb of the patient whose feet are positioned on the foot support device can be bent, fixed or loosened and stretched. The bending of the patient's lower limb does not require manual fixation by medical personnel, and the fixed position will not move;

2. In this technical scheme, after the thigh support device located on the right end plate of the movable plate supports and positions the patient's thigh, the patient's leg is positioned back and forth to avoid the phenomenon of the patient's leg shaking back and forth during the operation. The height of the rod extension can be adjusted to make it suitable for patients with different heights and shapes;

3. This technical solution adjusts the angle of the movable plate by rotating the filament rod, so as to realize the adjustment of the angle of the patient's knee positioned and fixed on the movable plate, which is convenient for doctors to operate and improves the quality of the operation;

4. In this technical solution, protective cushions are provided on the support surface of the thigh support seat, and protective cushions are provided on the wall of the waist-shaped elongated hole and the support surface of the foot support seat, which increases the comfort of the contact part with the patient to eliminate the discomfort of the patient's lower limb support and fixation;

5. This technical solution locates the lying position of the patient by setting a positioning convex pad on the left side of the fixing plate, so that the positioning and fixing of the lower limbs of the patient can be completed at one time, and there is no need for the patient to move the position multiple times during the positioning and fixing of the lower limbs. , The structure is simple, the design is novel, and the operation is convenient.

Description of drawings

Fig. 1 is the front view of the structure of the utility model;

Fig. 2 is the top view of the structure of the utility model;

3 is a schematic diagram of the connection structure between the drive device of the present invention and the foot support device with the foot support seat removed;

FIG. 4 is a schematic diagram of the structure of the foot support seat of the present invention.

Detailed ways

An embodiment of the present invention is described below in conjunction with the accompanying drawings 1-4, so as to describe the technical solution clearly and completely. Obviously, the described embodiment is only a part of the embodiment of the present invention, rather than all the embodiments. .

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , constructed and operated in a specific orientation, and therefore, should not be construed as a limitation of the present invention.

An angle-adjustable lower limb fixation device for orthopaedic knee replacement surgery has an operating bed board 1, the operating bed board 1 is formed by a movable board 2 and a fixed board 3 connected in an adjustable angle, and the left board surface of the fixed board 3 is provided with There is a positioning convex pad 7 and is located on the right side of the positioning convex pad 7. A support pad 4 is provided on the surface of the fixed plate 3, and a height-adjustable thigh support device 5 is provided on the right side of the movable plate 2. A foot support device 6 is provided on the board surface of the board 2, and the foot support device 6 is connected with a driving device 8 arranged on the bottom surface of the movable board 2, and is driven by the driving device 8 to make the foot support device 6 along the movable board 2. Move left or right in the length direction to realize bending, fixing or loosening and stretching of the lower limbs of the patient whose feet are positioned on the foot support device 6; specifically, the thigh support device 5 includes a support tube 5-1, a screw rod 5-2 , the thigh support seat 5-3 and the nut seat 5-4, the lower end of the support tube 5-1, which is provided with an escape hole on the right side of the movable plate 2 and is concentric with the escape hole, is fixed on the movable plate 2, and the The lower end of the nut seat 5-4 is rotatably mounted on the upper end of the support tube 5-1, and the lower end of the screw rod 5-2, which is adapted and connected with the nut seat 5-4, is inserted into the support tube 5-1. There are positioning plates on both sides, and the left and right sides are open-shaped structures. The support surface of the thigh support seat 5-3 is provided with a protective cushion and the bottom of the thigh support seat 5-3 is movably connected with the upper end of the screw rod 5-2. , and adjust the height of the thigh support seat 5-3 by rotating the nut seat 5-4; A guide groove 2-2 is formed on the board surface in the longitudinal direction, and a guide slot 2-1 is formed on the groove surface of the guide groove 2-2. The guide wheel 6-1 is placed in the guide groove 2-2 and fixed to the guide The upper end of the connecting plate on the wheel shaft of the wheel 6-1 is rotatably connected with the bottom of the foot support seat 6-2, the wheel shaft of the guide wheel 6-1 is fixedly connected with one end of the connecting frame 9, and the other end of the connecting frame 9 is connected to the bottom surface of the movable plate 2. And the upper end of the driving device 8 passing through the guiding long hole 2-1 is fixedly connected, the side plate of the foot support seat 6-2 is an arc-shaped positioning plate, and the lower end of the arc-shaped positioning plate is formed with a waist-shaped for positioning the patient's foot. The long hole 6-3, the hole wall of the waist-shaped long hole 6-3 and the supporting surface of the foot support seat 6-2 are provided with protective cushions; specifically, the driving device 8 includes an electric telescopic cylinder 8- 1. Connect the short arm 8-2, the roller 8-3 and the bracket 8-4, the electric telescopic cylinder 8-1 is arranged in parallel with the movable plate 2 and fixed on the bottom surface of the movable plate 2, the electric telescopic cylinder 8-1 The end of the telescopic rod is connected with the connecting short arms 8-2 fixed on both sides of the wheel shaft of the roller 8-3 through the pin shaft, the lower end of the bracket 8-4 is fixedly connected with the wheel shaft of the roller 8-3, and the middle part of the upper end of the bracket 8-4 is fixedly connected. The connecting column 8-5 is connected to the foot support device 6 through the connecting frame 9 after passing through the guide long hole 2-1 provided on the plate surface of the movable plate 2, and the telescopic rod of the electric telescopic cylinder 8-1 telescopically drives the foot support After the device 6 is moved to the left or right along the length direction of the movable plate 2, the patient's lower limb is bent and fixed with the foot positioned on the foot support device 6. Or loosen and stretch; Specifically, both sides of the right end of the movable plate 2 and the middle of the left end of the fixed plate 3 are made with a gap, and the right end of the movable plate 2 is inserted into the gap in the middle of the left end of the fixed plate 3, and the two sides of the left end of the fixed plate 3 are inserted into the gap. The middle part of the long screw rod 10 which is raised and rotated is fixedly connected with the right end of the movable plate 2, one end of the long screw rod 10 is made with a hexagonal groove 11, and the hexagonal head at the end of the handle is adapted to the hexagonal groove 11 and realized by rotating the handle Adjustment of the angle of the movable plate 2.

When in use, the patient's foot is placed on the support surface of the foot support seat 6-2, and the patient's foot passes through the waist-shaped long hole 6-3 on the side wall of the foot support seat 6-2 until the front of the patient's calf. The side is in contact with the arc-shaped positioning plate on the side of the foot support seat 6-2, and the electric telescopic cylinder 8-1 is activated. After the patient's lower limbs are bent to the proper position, the electric telescopic cylinder 8-1 is closed, and the nut seat 5-4 is turned to adjust the height of the screw rod 5-2 until the support surface of the thigh support seat 5-3 touches the patient's thigh. That is, the positioning and fixing of the patient's lower limbs is completed. When the angle position of the patient's knee needs to be adjusted, rotate the handle that fits the hexagonal head at the end and the hexagonal groove 11, so that the long screw 10 drives the movable plate 2 to rotate, so as to realize the adjustment of the angle of the patient's knee. adjust.

In this technical solution, the foot support device 6 is arranged on the movable plate 2, and the foot support device 6 is driven by the driving device 8 at the bottom of the movable plate 2 to move along the length direction of the movable plate 2, that is, the electric telescopic cylinder 8-1 Extending or shortening the telescopic rod drives the guide wheel 6-1 to move left or right along the guide groove 2-2, so that the lower limb of the patient whose foot is positioned on the foot support device 6 can be bent, fixed or stretched. The bending does not need to be manually fixed by medical personnel, and the fixed position will not move. After the thigh support device 5 located on the right end plate of the movable plate 2 supports and positions the patient's thigh, the patient's leg is positioned back and forth to avoid the patient's leg during the operation. For the phenomenon of shaking back and forth, adjust the protruding height of the screw rod 5-2 by turning the nut seat 5-4, so that it is suitable for patients with different heights and shapes, and adjust the angle of the movable plate 2 by turning the long screw rod 10 , so as to realize the adjustment of the knee angle of the patient positioned and fixed on the movable plate 2, which is convenient for doctors to operate and improve the quality of the operation. 3 The hole wall and the support surface of the foot support seat 6-2 are provided with protective cushions, which increases the comfort of the contact part with the patient and eliminates the discomfort of the patient's lower limb support and fixation. By setting the positioning on the left side of the fixing plate The convex pad 7 locates the lying position of the patient, realizes the positioning and fixation of the lower limbs of the patient at one time, and does not require the patient to move the position multiple times during the positioning and fixation of the lower limbs. The structure is simple, the design is novel, and the operation is convenient.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent changes made based on the contents described in the claims of the present utility model shall be included in the present utility model rights. within the requirements.

Claims (5)

1. An angle-adjustable lower limb fixation device for orthopaedic knee replacement surgery, having an operating bed board (1), characterized in that: the operating bed board (1) is connected by a movable board (2) and a fixed board (3) in an adjustable angle Thus, a positioning projection pad (7) is provided on the left side plate surface of the fixing plate (3), and a support pad (4) is arranged on the plate surface of the fixing plate (3) located on the right side of the positioning projection pad (7), A height-adjustable thigh support device (5) is provided on the right panel surface of the movable panel (2), a foot support device (6) is provided on the panel surface of the movable panel (2), and the foot support device ( 6) Connect with the driving device (8) arranged on the bottom surface of the movable plate (2), and make the foot support device (6) move left or right along the length direction of the movable plate (2) under the driving of the driving device (8). The lower limbs of the patient whose feet are positioned on the foot support device (6) are bent, fixed or released and stretched. 2. The angle-adjustable orthopaedic lower limb fixation device for knee replacement surgery according to claim 1, wherein the thigh support device (5) comprises a support tube (5-1), a screw rod (5-2) ), the thigh support seat (5-3) and the nut seat (5-4), the lower end of the support tube (5-1) which is provided with an escape hole on the right side of the movable plate (2) and is concentric with the escape hole It is fixed on the movable plate (2), the lower end of the nut seat (5-4) is rotatably mounted on the upper end of the support tube (5-1), and the screw rod (5-2) is adapted and connected with the nut seat (5-4). ) the lower end is inserted into the support tube (5-1), the front and rear sides of the thigh support seat (5-3) are provided with positioning plates, and the left and right sides are open-shaped structures. A protective cushion is provided on the support surface, the bottom of the thigh support seat (5-3) is movably connected with the upper end of the screw rod (5-2), and the height of the thigh support seat (5-3) is realized by rotating the nut seat (5-4). adjustment. 3. The angle-adjustable lower limb fixation device for orthopaedic knee replacement surgery according to claim 1, wherein the foot support device (6) comprises a guide wheel (6-1) and a foot support seat ( 6-2), a guide groove (2-2) is formed on the board surface of the movable plate (2) in the length direction, and a guide slot (2-1) is formed on the groove surface of the guide groove (2-2), so The guide wheel (6-1) is placed in the guide groove (2-2) and the upper end of the connecting plate fixed on the axle of the guide wheel (6-1) is rotatably connected with the bottom of the foot support seat (6-2). The axle of the guide wheel (6-1) is fixedly connected with one end of the connecting frame (9), and the other end of the connecting frame (9) is connected with the driving device (8) provided on the bottom surface of the movable plate (2) and passing through the guide long hole (2-1). ) the upper end is fixedly connected, the side plate of the foot support seat (6-2) is an arc-shaped positioning plate and the lower end of the arc-shaped positioning plate is provided with a waist-shaped long hole (6-3) for positioning the patient's foot, the A protective soft pad is provided on the hole wall of the waist-shaped long hole (6-3) and on the supporting surface of the foot support seat (6-2). 4. The angle-adjustable lower limb fixation device for orthopedic knee replacement surgery according to claim 1, wherein the drive device (8) comprises an electric telescopic cylinder (8-1), a connecting short arm (8- 2), a roller (8-3) and a bracket (8-4), the electric telescopic cylinder (8-1) is arranged in parallel with the movable plate (2) and fixed on the bottom surface of the movable plate (2), the electric telescopic The end of the telescopic rod of the cylinder (8-1) is connected with the connecting short arms (8-2) fixed on both sides of the wheel shaft of the roller (8-3) through a pin, and the lower end of the bracket (8-4) is connected to the roller (8) -3) The axle is fixedly connected and the connecting column (8-5) in the middle of the upper end of the bracket (8-4) passes through the guide slot (2-1) on the surface of the movable plate (2) and then passes through the connecting frame (9) ) is connected to the foot support device (6), and the telescopic rod of the electric telescopic cylinder (8-1) telescopically drives the foot support device (6) to move left or right along the length direction of the movable plate (2) to achieve foot positioning The patient's lower limbs on the foot support device (6) are flexed and fixed or released and stretched. 5. The angle-adjustable lower limb fixation device for orthopaedic knee replacement surgery according to claim 1 or 2 or 3 or 4, characterized in that: both sides of the right end of the movable plate (2) and the left end of the fixed plate (3) A gap is formed in the middle part, the right end of the movable plate (2) is inserted into the gap in the middle part of the left end of the fixed plate (3), and the middle part of the filament rod (10), which is rotatably connected with the left end of the fixed plate (3), is rotatably connected to the movable plate. (2) The right end is fixedly connected, one end of the filament rod (10) is formed with a hexagonal groove (11), the hexagonal head at the end of the handle is adapted to the hexagonal groove (11), and the movable plate (2) is realized by rotating the handle Angle adjustment.

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