CN116850005A - Combined dual-purpose walking aid for knee injury - Google Patents

Abstract

This application proposes a combined dual-purpose walker for below-knee injuries to solve the problem that the existing crutches cannot change the structure to achieve hand-free use, and the existing hand-free walking aids cannot adjust the shape for use; it includes a main support rod and a side support. Rod, the upper end of the main support rod is threadedly connected to an adjusting drum, and the lower end of the main support rod is fixedly connected to a mounting seat. There are two connecting grooves on the mounting seat. The side rod is rotatably connected in the connecting groove, and the upper end of the side rod is fixedly connected. There is a soft rubber rod; the two side rods are respectively hinged with the same knee support assembly through connecting rods. The knee support assembly is linked with the two side rods. The knee support assembly includes a fixed frame. The lower end of the fixed frame is hinged with a lower end for supporting the calf. The support base has a first threaded rod fixedly connected to the lower end of the fixed frame, and a second threaded rod is rotatably connected to the back of the support base. The first threaded rod and the second threaded rod can be threadedly connected to the internal thread of the adjusting drum, and the side rod There are fixed straps for fixing the legs on the support base.

Description

A combined dual-purpose walker for below-knee injuries

Technical field

The present application relates to the technical field of leg braces, in particular to a combined dual-purpose walker for below-knee injuries.

Background technique

Crutches are a walking aid for people with disabilities or injuries to their legs or feet.

Common crutches in daily life generally include two side rods, an adjustable support rod, an armpit support connected to the upper end of the side rod, and a handle connected to the middle of the side rod. When using it, you need to place the armpit support under the armpit and use the palm of your hand. Grasp the handle to maintain stability when standing on one foot and assist walking. This method must occupy one arm of the user, which is inconvenient when used.

If people only have injuries to their feet or ankles, their calves can be used as temporary supports during recovery, freeing their hands. In this regard, manufacturers have designed hands-free crutches. When using, the calf is bent, the crutch is fixedly connected to the thigh and calf, and the support rod is used as a stress point at the top of the calf to support the entire leg.

You can refer to the Chinese patent with application number CN202022319264.7, which discloses a hands-free crutch with adjustable calf support angle. A leg platform is provided at the connection between the upper support and the lower support to support the bent calf. , and the angle of the support platform can be adjusted to change the bending angle of the calf.

Referring to the Chinese patent with application number CN202110532107.0, a lower limb rehabilitation auxiliary device is disclosed. In order to free the hands, a calf piece is provided on the support tripod to support the bent calf, and an adjustment device is set on the thigh piece. The directional mechanism is used to adjust the angle of the calf piece, and can also adjust the bending angle of the calf. Moreover, a waist protection mechanism is added to the thigh piece to make the fixing more firm.

However, the products disclosed in the two patents mentioned above have already departed from the essence of crutches, and their structures are too complex, making them inconvenient to be used in daily life during the entire rehabilitation period. For example, although the product in the above-mentioned first patent is provided with an auxiliary grip, the position of the auxiliary grip is deviated from one side of the upper support and the leg plate cannot be folded, resulting in the product not being able to resemble the original product. It can be used under the arm like an ordinary crutch. The product in the second patent mentioned above is mainly used for fixation and rehabilitation. Its structure is more complex and cannot be used as an ordinary crutch;

At present, market leaders are in need of a dual-purpose walking aid that has a simple structure and can change its shape so that it can be used as an ordinary hand-held crutch and can be fixed to the calf to free both hands.

Contents of the invention

In view of the above situation, in order to overcome the shortcomings of the existing technology, this application provides a combined dual-purpose walker for below-knee injuries to solve the problem that the existing crutches cannot change the structure to achieve hand-free operation, and the existing hand-free walking aids cannot be adjusted. Issues with form usage.

The technical solution is that the application includes a telescopic main support rod and two telescopic side rods, the lower ends of the two side rods are bent, and the upper end of the main support rod is coaxially threaded with an adjusting drum. , the upper end of the adjusting drum is provided with internal threads on the inside, and the lower end is provided with external threads on the outside; the two side rods are located on both sides of the main support rod, and the lower end of the main support rod is fixedly connected with a mounting base, and the mounting base is provided with There are two symmetrically arranged connecting grooves. The two side rods are connected in the two connecting grooves through bearing rotation. The side rods can only rotate in the connecting grooves. The side rods are inseparable from the mounting base. The upper ends of the two side rods are fixed. A soft rubber rod is connected; the two side rods are respectively hinged with the same knee support assembly through connecting rods. The knee support assembly is linked with the two side rods. When the knee support assembly moves in the horizontal direction, the two sides The rod rotates on the mounting base at the same time; the knee support assembly includes a vertical fixed frame, the lower end of the fixed frame is hinged with a support base for supporting the calf, the lower end of the fixed frame is fixedly connected with a first threaded rod, and the back of the support base rotates A second threaded rod is connected, and both the first threaded rod and the second threaded rod can be threadedly connected in the internal thread of the adjusting drum. The side rod and the support base are respectively provided with fixed straps for fixing the legs.

Preferably, a telescopically adjustable extension rod is inserted into the lower end of the main support rod. The extension rod is provided with a double-headed solid V-shaped positioning buckle. The main support rod is provided with two rows of symmetrically arranged round holes. The beads on the positioning buckle are engaged in round holes of different heights to adjust the length of the extension rod extending out of the main support rod. The telescopic adjustment method of the side rod is the same as that of the main support rod.

Preferably, two sets of retaining rings for connecting connecting rods are respectively provided on the vertical section of the side rod and the vertical rod of the fixed frame, and one end of the connecting rod is rotatably connected to the retaining ring on the side rod. , the other end of the connecting rod is rotationally connected to the retaining ring on the fixed frame.

Preferably, the fixed frame is a square frame, and the rod located at the upper end of the frame is arranged in an arc shape. There are multiple fixed rods arranged equidistantly in the frame, and a cushion located in front of the fixed rod is provided in the frame. Used to touch the thighs.

Preferably, the support base is fixedly connected with arc-shaped leg guards on both sides, and the leg guards are provided with escape grooves. When the support base and the fixed frame are closed, the escape grooves correspond to the connecting rods.

Preferably, the lower end of the back cushion is fixedly connected to a soft connection belt for wrapping the knees, and the other end of the soft connection belt is fixedly connected to the leg guard.

Preferably, there are two sets of fixing straps on the support base, and one set of fixing straps close to the fixing frame is inclined toward the front side and is used to fix the bend of the knee joint.

Preferably, a truncated cone-shaped rubber base is fixedly connected to the lower end of the extension rod. The rubber base is elastic and plays a shock-absorbing role during use to protect the injured calf.

Preferably, the main support rod, side rods and fixed frame are all made of aluminum alloy pipes, and the outsides of the three are respectively wrapped with soft protective layers.

Preferably,

The technical solution provided by this application has the following significant effects compared with the existing known technology:

1. The walking aid of the present invention is different from the existing hand-free crutches. It not only retains the basic function of the hand-held crutches and can be placed under the armpits for support, but also can change the shape. After the knee support assembly is opened, the support seat is suitable for small children. The legs are fixedly supported to achieve a hands-free effect.

2. Through the setting of the mounting base, the two side rods can rotate freely. Through the setting of four connecting rods, the four connecting rods connect the side rods and the knee support assembly. The knee support assembly can be controlled to move forward and backward to drive the two side rods. The poles rotate synchronously to change the shape of the walker, making it easy to switch between being placed under the armpits for handheld use and being fixed on the legs for hands-free use.

3. By adjusting the setting of the rotating drum, the adjusting rotating drum is used to connect the first threaded rod or the second threaded rod with the main support rod. The adjusting rotating drum can be used to easily fix the two forms of the walker. , to prevent the side bars or knee support components from shaking, making it stable and reliable during use.

Description of the drawings

Figure 1 is an isometric schematic diagram of the first form of the present application.

Figure 2 is an isometric schematic diagram of the second form of the present application.

Figure 3 is a schematic front view of the second form of the present application.

Figure 4 is a schematic cross-sectional view of A-A in Figure 3 of the present application.

Figure 5 is a schematic structural diagram of the present application after removing the knee support assembly.

Figure 6 is a schematic diagram of the opening and closing of the knee support assembly of the present application.

Figure 7 is a schematic diagram of the electronic device inside the rubber base of the present application.

Figure 8 is a structural block diagram of the tilt alarm module.

Label description in the schematic diagram:

1. Main support rod; 2. Side rod; 3. Adjusting drum; 4. Mounting base; 5. Connection groove; 6. Rubber rod; 7. Knee support component; 701. Fixed frame; 702. Support base; 703. The first threaded rod; 704, the second threaded rod; 705, cushion; 706, leg guard; 707, avoidance groove; 708, soft connection belt; 709, fixed rod; 8, fixed strap; 9, retaining ring; 10, Connecting rod; 11. Rubber base; 12. Tilt alarm module; 1201. Controller; 1202. Buzzer; 1203. Indicator light; 1204. Pressure sensor.

Implementation

In the discussion that follows, details are given to provide a more thorough understanding of the application. However, one skilled in the art will appreciate that the present application may be practiced without one or more of these details. In specific examples, some technical features that are well known in the art are not described in detail in order to avoid confusion with this application. It should be noted that the terms "upper", "lower", "front", "back", "left", "right" and similar expressions used in this article are for illustrative purposes only and are not limiting.

Ordinal words such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order, etc. Furthermore, for example, the term "first component" does not by itself imply the presence of a "second component" and the term "second component" does not by itself imply the presence of a "first component".

Specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

As shown in Figures 1 to 6, it includes a telescopic main support rod 1 and two telescopic side rods 2. The upper end of the side rod 2 is vertical, and the lower end of the side rod 2 is bent.

Furthermore, in order to facilitate the adjustment of the length of the main support rod 1 and the side rod 2, a telescopically adjustable extension rod is inserted into the lower end of the main support rod 1, and the extension rod is provided with a double-headed solid V-shaped positioning buckle. , there are two rows of symmetrically arranged round holes on the main support rod 1. The beads on the positioning buckle are clamped in the round holes of different heights to adjust the length of the extension rod extending out of the main support rod 1. This adjustment method is more convenient. Universal, easy to adjust, stable and firm, the telescopic adjustment method of the above-mentioned side rod 2 is the same as that of the main support rod 1.

Referring to Figure 5, the two side rods 2 are located on both sides of the main support rod 1. The lower end of the main support rod 1 is fixedly connected to a mounting base 4, and the mounting base 4 is provided with two symmetrically arranged connecting grooves 5. Each side rod 2 is rotatably connected in two connecting grooves 5 through bearings. The side rod 2 can only rotate in the connecting groove 5. The side rod 2 is inseparable from the mounting base 4. The upper ends of the two side rods 2 are fixedly connected with a The rotational setting of the soft rubber rod 6, the side rod 2 and the main support rod 1 is an innovative point of the present invention. On the premise of maintaining the original structure and function of the crutch, the shape transformation is realized to meet two different usage modes. .

Furthermore, the connecting groove 5 and the side rod 2 can be connected by using a directional bearing to limit the radial movement of the side rod 2 and prevent the side rod 2 from being separated from the main support rod 1 .

Referring to Figures 1 and 2, the two above-mentioned side rods 2 are respectively hinged with the same knee support assembly 7 through connecting rods 10. The knee support assembly 7 is linked with the two side rods 2, and the knee support assembly 7 moves forward and backward in the horizontal direction. When, the two side rods 2 rotate simultaneously on the mounting base 4.

The upper end of the above-mentioned main support rod 1 is coaxially threaded with an adjusting drum 3. The upper end of the adjusting drum 3 is provided with internal threads on the inside and the lower end is provided with external threads. The upper end of the adjusting drum 3 is provided with anti-slip textures on the outside to facilitate manual rotation. Used during operation, the adjusting drum 3 is used in conjunction with the knee support assembly 7 to position the knee support assembly 7 in two modes of use;

Specifically, referring to Figure 6, the above-mentioned knee support assembly 7 includes a vertical fixing frame 701. The lower end of the fixing frame 701 is hinged with a support base 702 for supporting the calf. The lower end of the fixing frame 701 is fixedly connected with a first threaded rod 703 to support the lower leg. A second threaded rod 704 is rotatably connected to the back of the seat 702. Both the first threaded rod 703 and the second threaded rod 704 can be threadedly connected to the internal thread of the adjusting drum 3. The rotation directions of the internal thread and the external thread are opposite, which is convenient. The first threaded rod 703 or the second threaded rod 704 is fixedly connected to the main support rod 1 through the adjusting drum 3. The cooperation between the two threaded rods and the adjusting drum 3 respectively corresponds to the two usage forms of the walker.

Further, with reference to Figures 5 and 6, two sets of retaining rings 9 for connecting the connecting rods 10 are respectively provided on the vertical section of the side rod 2 and the vertical rod of the fixed frame 701. One end of the connecting rod 10 The other end of the connecting rod 10 is rotationally connected in the retaining ring 9 on the side rod 2, and the other end of the connecting rod 10 is rotationally connected in the retaining ring 9 on the fixed frame 701, so that the position of the connecting rod 10 on the side rod 2 will not change. Under the restriction of the rod 10, the knee support assembly 7 can only move in the horizontal direction, providing the possibility to stably maintain the two configurations.

Referring to Figures 2 and 4, the above-mentioned side rods 2 and the support base 702 are respectively provided with fixed straps 8 for fixing the legs. In order to better fix the user's lower legs, the fixed straps 8 on the above-mentioned support base 702 are There are two sets of fixing straps 8, among which a set of fixing straps 8 close to the fixing frame 701 is tilted toward the front side and is used to fix the bend of the knee joint.

Furthermore, in order to facilitate the connection of the fixing frame 701 with the side rod 2 through the connecting rod 10 and to facilitate the grasping of the fixing frame 701 by hand to control the knee support assembly 7 to move forward and backward, the above-mentioned fixing frame 701 is a square frame, and is located at the upper end of the frame. The rod is arranged in an arc shape, and a plurality of fixed rods 709 arranged equidistantly are provided in the frame. A cushion 705 located in front of the fixed rod 709 is provided in the frame. The cushion 705 is fixedly connected to the fixed rod 709. The cushion 705 is used for supporting the rod. Connected to the thigh, the fixation is more firm and comfortable.

Further, in order to better protect the lower legs, the above-mentioned support base 702 is fixedly connected with arc-shaped leg guards 706 on both sides. The leg guards 706 are provided with avoidance grooves 707. When the support base 702 and the fixed frame 701 are closed, , the escape groove 707 corresponds to the above-mentioned connecting rod 10, so that the support base 702 and the fixed frame 701 can be completely closed.

Further, in order to protect the knee of the user's affected leg, the lower end of the above-mentioned back cushion 705 is fixedly connected with a soft connection belt 708 for wrapping the knee. The other end of the soft connection belt 708 is fixedly connected to the above-mentioned leg guard 706. During use, the knee abuts On the soft connection belt 708, the soft connection belt 708 provides a good protective effect on the knee.

Furthermore, in order to reduce the force on the calf of the affected leg during use, a truncated cone-shaped rubber base 11 is fixedly connected to the lower end of the extension rod. The rubber base 11 is elastic and plays a shock-absorbing role during use to protect the calf on the fixed side. .

Furthermore, in order to make the walker in the present invention more lightweight and sturdy, the above-mentioned main support rod 1, side rod 2 and fixed frame 701 are all made of aluminum alloy pipes, and the outsides of the three are respectively wrapped with soft protective layers.

The above-mentioned walking aid of the present invention can be used in two different forms;

Example 1, the first form (hand-held use with armpit support):

Referring to Figure 1, first, manually pull the fixing bracket 701 to control the knee support assembly 7 to move forward and backward in the horizontal direction until the side rod 2, the connecting rod 10, the fixing bracket 701, and the main support rod 1 are on the same plane, and then move the support base 702 swings in the direction indicated by the arrow in Figure 6 until the support base 702 and the fixed frame 701 are completely closed. At this time, the avoidance groove 707 on the leg guard 706 corresponds to the connecting rod 10 above the fixed frame 701. The arc-shaped leg guard 706 will not hinder the closing of the support base 702, and then bind the fixed strap 8 on the support base 702 to the fixed frame 701, thereby connecting the support base 702 and the fixed frame 701 together;

Then, manually rotate the adjusting drum 3, so that the adjusting drum 3 moves upward, and at the same time, the first threaded rod 703 is also threadedly connected to the internal thread of the adjusting drum 3, so that the fixing frame 701 is fixedly connected to the main support rod 1 , this can limit the movement of the knee support assembly 7 in the horizontal direction. Since the knee support assembly 7 has and only has this displacement, the first threaded rod 703 is fixedly connected to the main support rod 1 by adjusting the rotating drum 3. Together, the knee support assembly 7 can be completely fixed, which also limits the rotation of the two side bars 2, so that the walker in this application remains in the first form;

Finally, freely adjust the height of the extension rod at the lower end of the main support rod 1 and the height of the extension rod on the side rod 2 to meet the needs of different people. When in use, the rubber rod 6 located on the top of the side rod 2 is placed under the armpit. To make it more comfortable, the arm on this side hangs down naturally, and the palm of the hand grasps the handle (not shown in the figure) located at the lower end of the fixed frame 701. The walker in the present invention can be used as an ordinary crutch. Since the entire knee support assembly 7 is located on two between the side bars 2, so that the knee support assembly 7 will not affect people's use in this form.

Embodiment 2, second form (fixed on the leg for hands-free use):

Referring to Figure 2, first, rotate the adjusting drum 3 to separate the first threaded rod 703 from the adjusting drum 3, then pull the fixing bracket 701 to control the knee support assembly 7 to move backward, and the knee support assembly 7 pulls the connecting rod 10 to move the two The side rods 2 rotate synchronously, the upper ends of the two side rods 2 move to the rear of the main support rod 1, and then the support base 702 swings downward;

Secondly, while the support base 702 swings downward, control the docking between the adjusting drum 3 and the second threaded rod 704. The second threaded rod 704 and the support base 702 are rotationally connected, which facilitates the connection between the second threaded rod 704 and the adjusting drum. 3, after the two are docked, rotate the adjusting drum 3 to make the adjustment rotation move upward, and thread the second threaded rod 704 into the internal thread of the adjusting drum 3, so that the knee support assembly 7 can be adjusted Fixed so that the walker in the present invention maintains the second form;

Then, scale the extension rod on the side rod 2 and the extension rod on the main support rod 1 to a suitable length. When using it, curl up the calf with the injured ankle and place it on the leg guard 706, with the knee abutting the soft connection belt 708. , the back cushion 705 is squeezed on the front side of the thigh, and then the two sets of fixed straps 8 on the support seat 702 are bound to the calves, and the fixed straps 8 on the side rod 2 are bound to the thighs, so as to secure the assistant in the present invention. The walking device is completely fixed on the legs;

Finally, the main support rod 1 acts as the user's calf, allowing the user to walk slowly, freeing both hands for the user to do other operations. In addition, when necessary, the user can also use the palm of his hand to grasp the fixing frame 701 to prevent falling.

Example 3:

Referring to Figures 7 and 8, a tilt alarm module 12 is provided inside the rubber base 11. The tilt alarm module includes a controller 1201, a buzzer 1202, an indicator light 1203 and two pressure sensors 1204. The controller 1201 and the buzzer 1202 Located in the extension rod of the main support rod 1, the two pressure sensors 1204 are located on the same plane and are scattered in the left and right directions of the main support rod 1. The indicator light 1203 adopts a ring light and is arranged on the outside of the rubber base. The buzzer 1202, indicator light 1203 and pressure sensor 1204 are electrically connected to the controller respectively;

The controller 1201 can use an MCU microcontroller chip to process the signals from the two pressure sensors 1204, monitor the stress on the main support rod 1 during the stepping process, determine the deflection direction of the affected leg, and flash and buzz the indicator light 1203. The buzzer 1202 sounds to alert the user to make timely adjustments to prevent adverse effects on the recovery of the affected leg.

For example, parameters can be set for the controller. In every 10 steps, the controller 1201 collects the signal values from the front, rear, and left pressure sensors 1204, and determines whether the pressure value on one side is the highest value for 8 consecutive times. , if yes, it is determined that the main support rod 1 is tilted to this side, if not, it is determined that the main support rod 1 is normal. If it is determined that the main support rod 1 is deflected, the controller 1201 sends a signal, causing the indicator light 1203 to light up and the buzzer 1202 sounds to remind the user to adjust the height of the main support rod 1 or change the deployment angle of the knee support assembly 7.

The walking aid of the present invention is different from the existing hand-free crutches. It not only retains the basic function of the hand-held crutches, but also can be placed under the armpits for support. Provide fixed support to achieve a hands-free effect. Through the setting of the mounting base, the two side rods can rotate freely. Through the setting of four connecting rods, the four connecting rods connect the side rods and the knee support assembly. By controlling the knee support assembly to move forward and backward, the two side rods can be synchronized. Rotate to change the shape of the walker and switch between being placed under the armpit for hand-held use and being fixed on the leg for hands-free use. By adjusting the setting of the rotating drum, the adjusting rotating drum is used to connect the first threaded rod or the second threaded rod with the main support rod. The adjusting rotating drum can be used to easily fix the two forms of the walker, which avoids If the side bars or knee support components shake, they must be stable and reliable during use.

It can be seen that the walking aid provided by the present application can effectively solve the problem that the existing crutches cannot change the structure to achieve hand-free use, and the existing hand-free walking aids cannot adjust the shape for use.

The above-mentioned embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims (10)

1. The combined dual-purpose walker for the knee injury comprises a telescopic main support rod and two telescopic side rods, wherein the lower ends of the two side rods are bent;

the two side rods are respectively positioned at two sides of the main supporting rod, the lower end of the main supporting rod is fixedly connected with an installation seat, two symmetrically arranged connecting grooves are formed in the installation seat, the two side rods are respectively connected in the two connecting grooves through bearings in a rotating mode, the side rods can only rotate in the connecting grooves, the side rods are inseparable from the installation seat, and the upper ends of the two side rods are fixedly connected with a soft rubber rod;

the two side rods are respectively hinged with the same knee support assembly through connecting rods, the knee support assembly is linked with the two side rods, and when the knee support assembly moves in the horizontal direction, the two side rods simultaneously rotate on the mounting seat;

the knee support assembly comprises a vertical fixing frame, a supporting seat for supporting the lower leg is hinged to the lower end of the fixing frame, a first threaded rod is fixedly connected to the lower end of the fixing frame, a second threaded rod is rotatably connected to the back of the supporting seat, and the first threaded rod and the second threaded rod are both in threaded connection with internal threads of the adjusting rotary drum;

the side rods and the supporting seats are respectively provided with a fixing strap for fixing the legs.

2. The combined dual-purpose walker for the below knee injury according to claim 1, wherein the lower end of the main supporting rod is inserted with an extension rod which can be adjusted in a telescopic way, the extension rod is provided with a double-head solid V-shaped positioning elastic buckle, the main supporting rod is provided with two rows of symmetrically arranged round holes, the clamping beads on the positioning elastic buckle are clamped in the round holes at different heights to adjust the length of the extension rod extending out of the main supporting rod, and the telescopic adjusting mode of the side rod is the same as that of the main supporting rod.

3. The combined type dual-purpose walking aid for the knee injury according to claim 1, wherein two groups of check rings for connecting a connecting rod are respectively arranged on the vertical section of the side rod and the vertical rod of the fixing frame, one end of the connecting rod is rotatably connected in the check ring on the side rod, and the other end of the connecting rod is rotatably connected in the check ring on the fixing frame.

4. The combined dual-purpose walker for the knee injury as claimed in claim 1, wherein the fixing frame is a square frame, the rods at the upper end of the frame are arc-shaped, a plurality of fixing rods which are arranged at equal intervals are arranged in the frame, and a back cushion which is positioned at the front side of the fixing rods is arranged in the frame and is used for abutting against the thigh.

5. The combined dual-purpose walker for the knee injury of claim 4 wherein the support base is fixedly connected with leg guard plates with arc-shaped sides, the leg guard plates are provided with avoiding grooves, and the avoiding grooves correspond to the connecting rods when the support base is closed with the fixing frame.

6. The combined dual-purpose walker for the knee injury of claim 5 wherein the lower end of the back cushion is fixedly connected with a flexible connecting strap for wrapping the knee and the other end of the flexible connecting strap is fixedly connected to the leg shield.

7. The combined dual-purpose walker for the below knee injury according to claim 1, wherein the number of the fixing bands on the supporting seat is two, wherein one fixing band near the fixing frame is inclined to the front side for fixing the knee joint bending position.

8. The combined dual-purpose walker for the below knee injury according to claim 1, wherein the main supporting rods, the side rods and the fixing frame are all made of aluminum alloy tubes, and the outer sides of the main supporting rods, the side rods and the fixing frame are respectively wrapped with a soft protective layer.

9. The combined dual-purpose walker for the knee injury of claim 2 wherein the lower end of the extension rod is fixedly connected with a rubber base of the truncated cone type.

10. The combined dual-purpose walker for the below knee injury according to claim 9, wherein an inclination alarm module is arranged inside the rubber base and comprises a controller, a buzzer, an indicator light and two pressure sensors, wherein the controller and the buzzer are positioned in an extension rod of the main supporting rod, the two pressure sensors are positioned on the same plane and are dispersed in the left direction and the right direction of the main supporting rod, the indicator light is arranged on the outer side of the rubber base by adopting an annular lamp, and the buzzer, the indicator light and the pressure sensors are respectively electrically connected with the controller.