A combined dual-purpose walker for below-knee injuries

Abstract

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

Description

Technical Field

[0001] The present application relates to the technical field of leg supports, and in particular to a combined dual-purpose walker for below-knee injuries. Background Art

[0002] Crutches are walking aids for people with leg disabilities or leg injuries.

[0003] 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, the armpit support needs to be placed under the armpit and the handle is grasped with the palm of the hand to maintain stability when standing on one leg and assist walking. This method must occupy one arm of the user, which is inconvenient to use.

[0004] If only the foot or ankle is injured, the calf can be used as a temporary support during the recovery period, freeing the hands. To address this, some manufacturers have designed hands-free crutches. To use, the calf is bent and the crutch is fixed to the thigh and calf. The support rod at the top of the calf serves as a force point to support the entire leg.

[0005] You can refer to the Chinese patent application number CN202022319264.7, which discloses a hands-free crutch with adjustable calf support angle. A leg support platform is provided at the connection between the upper support member and the lower support member to support the bent calf, and the support platform can adjust the angle to change the bending angle of the calf.

[0006] The Chinese patent with reference application number CN202110532107.0 discloses a lower limb rehabilitation assist device. In order to free up the hands, a calf piece is provided on the support foot frame to support the bent calf, and an adjustment mechanism is provided on the thigh piece to adjust the angle of the calf piece, which can also realize the adjustment of the calf bending angle. In addition, a waist protection mechanism is added to the thigh piece to make the fixation more firm.

[0007] However, the products disclosed in the above two patents have deviated from the essence of crutches and have overly complex structures, making them inconvenient to use in daily life during the entire rehabilitation period. For example, although the product in the first patent is provided with an auxiliary handle, the auxiliary handle is located on one side of the upper support member and the leg support plate cannot be folded, resulting in the product being unable to be used by clamping it under the armpit like an ordinary crutch. The product in the second patent is mainly used for fixation and rehabilitation, and its structure is more complex, and it cannot be used as an ordinary crutch either.

[0008] At present, the market needs a dual-purpose walking aid with a simple structure and changeable shape, which can be used as an ordinary handheld crutch or fixed to the calf to free the hands. Summary of the Invention

[0009] In view of the above situation, in order to overcome the defects of the existing technology, the present application provides a combined dual-purpose walker for below-knee injuries to solve the problems that the existing crutches cannot be transformed into a hands-free structure, and the existing hands-free walking aids cannot be adjusted for use.

[0010] The technical solution is as follows: the present application comprises a retractable main support rod and two retractable side rods, the lower ends of the two side rods are bent, the upper end of the main support rod is coaxially threadedly connected to an adjusting cylinder, the inner side of the upper end of the adjusting cylinder is provided with an internal thread, and the outer side of the lower end is provided with an external thread; the two side rods are respectively located on both sides of the main support rod, and the lower end of the main support rod is fixedly connected to a mounting seat, and the mounting seat is provided with two symmetrically arranged connecting grooves, and the two side rods are respectively rotatably connected in the two connecting grooves through bearings, and the side rods can only rotate in the connecting grooves, and the side rods are inseparable from the mounting seat, and the upper ends of the two side rods are fixed It is connected to a soft rubber rod; the two side rods are respectively hinged with the same knee support assembly through a connecting rod, and the knee support assembly is linked with the two side rods. When the knee support assembly moves in the horizontal direction, the two side rods rotate simultaneously on the mounting seat; the knee support assembly includes a vertical fixing frame, the lower end of the fixing frame is hinged with a support seat for supporting the calf, the lower end of the fixing frame is fixedly connected to a first threaded rod, and the back side of the support seat is rotatably connected to a second threaded rod, both the first threaded rod and the second threaded rod can be threadedly connected to the internal thread of the adjusting drum, and the side rods and the support seat are respectively provided with fixing straps for fixing the legs.

[0011] Preferably, a telescopically adjustable extension rod is inserted into the lower end of the main support rod, and a double-headed solid V-shaped positioning spring buckle is provided on the extension rod. Two rows of symmetrically arranged circular holes are opened on the main support rod, and the beads on the positioning spring buckle are clipped into the circular holes at 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.

[0012] 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 fixing frame, one end of the connecting rod is rotatably connected to the retaining ring on the side rod, and the other end of the connecting rod is rotatably connected to the retaining ring on the fixing frame.

[0013] Preferably, the fixing frame is a square frame, and the rod at the upper end of the frame is arranged in an arc shape. A plurality of equidistantly arranged fixing rods are arranged in the frame, and a cushion is provided in the frame at the front side of the fixing rod, and the cushion is used to abut the thigh.

[0014] Preferably, the support seat is fixedly connected to a leg guard plate with arc-shaped sides, and an avoidance groove is provided on the leg guard plate. When the support seat and the fixing frame are closed, the avoidance groove corresponds to the connecting rod.

[0015] Preferably, a soft connecting belt for wrapping the knees is fixedly connected to the lower end of the cushion, and the other end of the soft connecting belt is fixedly connected to the leg guard.

[0016] Preferably, there are two groups of fixing straps on the support seat, wherein the group 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.

[0017] Preferably, the lower end of the extension rod is fixedly connected to a truncated cone-shaped rubber base, which is elastic and has a shock-absorbing effect when in use, thereby protecting the injured calf.

[0018] Preferably, the main support rod, side rod and fixing frame are all made of aluminum alloy pipes, and the outer sides of the three are respectively wrapped with a soft protective layer.

[0019] Preferably,

[0020] Compared with the existing known technologies, the technical solution provided by this application has the following significant effects:

[0021] 1. The walking aid of the present invention is different from the existing hands-free crutch. It retains the basic function of a handheld crutch and can be placed under the armpit for support. It can also change its shape. The rear support seat of the knee support assembly can be opened to fix and support the calf, achieving a hands-free effect.

[0022] 2. The two side rods can be rotated freely by setting the mounting base. The four connecting rods connect the side rods to the knee support assembly. The two side rods can be rotated synchronously by manipulating the knee support assembly to move forward and backward, thereby changing the shape of the walker. It can be easily switched between being placed under the armpit for handheld use and being fixed on the leg for hands-free use.

[0023] 3. By adjusting the setting of the rotating cylinder, the adjusting rotating cylinder is used to connect the first threaded rod or the second threaded rod to the main support rod. The adjusting rotating cylinder can be used to easily fix the two forms of the walker, avoiding shaking of the side rod or the knee support assembly, and ensuring stability and reliability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axonometric diagram of the first form of this application.

[0025] Figure 2 This is an axonometric diagram of the second form of this application.

[0026] Figure 3 It is a front view schematic diagram of the second form of the present application.

[0027] Figure 4 This application Figure 3 Schematic cross-sectional view of AA.

[0028] Figure 5 This is a schematic diagram of the structure of the present application after the knee support assembly is removed.

[0029] Figure 6 It is a schematic diagram of the opening and closing of the knee support assembly of the present application.

[0030] Figure 7 This is a schematic diagram of the electronic components inside the rubber base of this application.

[0031] Figure 8 This is the structural block diagram of the tilt alarm module.

[0032] Explanation of the numbers in the schematic diagram:

[0033] 1. Main support rod; 2. Side rod; 3. Adjustment drum; 4. Mounting seat; 5. Connecting groove; 6. Rubber rod; 7. Knee support assembly; 701. Fixing frame; 702. Support seat; 703. First threaded rod; 704. Second threaded rod; 705. Cushion; 706. Leg guard; 707. Avoidance groove; 708. Soft connecting belt; 709. Fixing rod; 8. Fixing 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 Method

[0034] In the discussion below, details are provided to provide a more thorough understanding of the present application. However, those skilled in the art will appreciate that the present application can be implemented without one or more of these details. In certain examples, some technical features known in the art are not described in detail to avoid confusion with the present application. It should be noted that the terms "upper," "lower," "front," "back," "left," "right," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0035] Ordinal numbers such as “first” and “second” cited in this application are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term “first component” itself does not imply the existence of a “second component”, and the term “second component” itself does not imply the existence of a “first component”.

[0036] The specific implementation of the present application is further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 6 As shown, it includes a telescopic main support rod 1 and two telescopic side rods 2, the upper ends of the side rods 2 are vertical, and the lower ends of the side rods 2 are bent.

[0038] Furthermore, in order to facilitate the adjustment of the use length of the main support rod 1 and the side rod 2, a telescopically adjustable extension rod is inserted at the lower end of the above-mentioned main support rod 1, and the extension rod is provided with a double-headed solid V-shaped positioning spring buckle. Two rows of symmetrically arranged circular holes are opened on the main support rod 1, and the beads on the positioning spring buckle are clipped into the circular holes at different heights to adjust the length of the extension rod extending out of the main support rod 1. This adjustment method is more common, easy to adjust, stable and firm. The telescopic adjustment method of the above-mentioned side rod 2 is the same as the telescopic adjustment method of the main support rod 1.

[0039] refer to Figure 5 The two side rods 2 are respectively 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 seat 4. The mounting seat 4 is provided with two symmetrically arranged connecting grooves 5. The two side rods 2 are respectively rotatably connected in the two connecting grooves 5 through bearings. The side rods 2 can only rotate in the connecting grooves 5. The side rods 2 and the mounting seat 4 are inseparable. A soft rubber rod 6 is fixedly connected to the upper end of the two side rods 2. The rotation setting of the side rod 2 and the main support rod 1 is an innovation of the present invention. While maintaining the original structure and function of the crutch, the shape transformation is realized to meet two different usage methods.

[0040] Furthermore, the connection between the connecting groove 5 and the side rod 2 can be carried out using a directional support 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.

[0041] refer to Figure 1 and Figure 2 The two side rods 2 are respectively hinged with the same knee support assembly 7 through a connecting rod 10. The knee support assembly 7 is linked with the two side rods 2. When the knee support assembly 7 moves back and forth in the horizontal direction, the two side rods 2 rotate simultaneously on the mounting seat 4.

[0042] The upper end of the main support rod 1 is coaxially threadedly connected to an adjusting cylinder 3. The inner side of the upper end of the adjusting cylinder 3 is provided with an internal thread, and the outer side of the lower end is provided with an external thread. The outer side of the upper end of the adjusting cylinder 3 is provided with anti-slip grooves to facilitate manual rotation operation. The adjusting cylinder 3 is used in conjunction with the knee support assembly 7 to position the knee support assembly 7 in two usage modes.

[0043] Specifically, refer to Figure 6The above-mentioned knee support assembly 7 includes a vertical fixing frame 701, and the lower end of the fixing frame 701 is hinged with a support seat 702 for supporting the calf. The lower end of the fixing frame 701 is fixedly connected to a first threaded rod 703, and the back of the support seat 702 is rotatably connected to a second threaded rod 704. The first threaded rod 703 and the second threaded rod 704 can both be threadedly connected to the internal thread of the adjusting cylinder 3. The rotation direction of the internal thread and the external thread are opposite, which makes it convenient to fix the first threaded rod 703 or the second threaded rod 704 to the main support rod 1 through the adjusting cylinder 3. The cooperation of the two threaded rods and the adjusting cylinder 3 corresponds to the two usage modes of the walker.

[0044] Further, refer to Figure 5 and Figure 6 Two sets of retaining rings 9 for connecting the connecting rod 10 are respectively provided on the vertical section of the above-mentioned side rod 2 and the vertical rod of the fixing frame 701. One end of the above-mentioned connecting rod 10 is rotatably connected to the retaining ring 9 on the side rod 2, and the other end of the connecting rod 10 is rotatably connected to the retaining ring 9 on the fixing frame 701, so that the position of the connecting rod 10 on the side rod 2 will not change. In this way, under the restriction of the connecting rod 10, the knee support assembly 7 can only move in the horizontal direction, which provides feasibility for stably maintaining the two forms.

[0045] refer to Figure 2 and Figure 4 The side rods 2 and the support seat 702 are respectively provided with fixing straps 8 for fixing the legs. In order to better fix the user's calves, there are two groups of fixing straps 8 on the support seat 702, of which one group of fixing straps 8 close to the fixing frame 701 is inclined forward and is used to fix the knee joint bend.

[0046] 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 hand gripping of the fixing frame 701 to control the forward and backward movement of the knee support assembly 7, the above-mentioned fixing frame 701 is a square frame, and the rod at the upper end of the frame is arranged in an arc shape. A plurality of equally spaced fixing rods 709 are arranged in the frame, and a cushion 705 is provided in the frame at the front side of the fixing rod 709. The cushion 705 is fixedly connected to the fixing rod 709. The cushion 705 is used to abut the thigh, making the fixation more firm and comfortable.

[0047] Furthermore, in order to better fix and protect the calf, the above-mentioned support seat 702 is fixedly connected with a leg guard 706 with arcs on both sides, and an avoidance groove 707 is opened on the leg guard 706. When the support seat 702 and the fixing frame 701 are closed, the avoidance groove 707 corresponds to the above-mentioned connecting rod 10, so that the support seat 702 and the fixing frame 701 can be completely closed.

[0048] Furthermore, in order to protect the knee of the user's affected leg, a soft connecting belt 708 for wrapping the knee is fixedly connected to the lower end of the cushion 705, and the other end of the soft connecting belt 708 is fixedly connected to the leg guard 706. When in use, the knee abuts against the soft connecting belt 708, and the soft connecting belt 708 provides good protection for the knee.

[0049] Furthermore, in order to reduce the force on the calf of the affected leg during use, the lower end of the extension rod is fixedly connected to a truncated cone-shaped rubber base 11. The rubber base 11 is elastic and plays a shock-absorbing role during use to protect the calf of the fixed side.

[0050] Furthermore, in order to make the walker of the present invention more lightweight and strong, the main support rod 1, the side rod 2 and the fixing frame 701 are all made of aluminum alloy pipes, and the outer sides of the three are respectively wrapped with a soft protective layer.

[0051] The walking aid of the present invention can be used in two different forms;

[0052] Example 1, first form (underarm support and handheld use):

[0053] Reference Attachment Figure 1 First, manually pull the fixing frame 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 frame 701, and the main support rod 1 are in the same plane, and then move the support base 702 according to Figure 6 Swing in the direction indicated by the middle arrow until the support base 702 and the fixing 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 fixing frame 701. The curved leg guard 706 will not hinder the closing of the support base 702. Then, tie the fixing strap 8 on the support base 702 to the fixing frame 701, thereby connecting the support base 702 and the fixing frame 701 together.

[0054] Then, manually rotate the adjusting cylinder 3 so that the adjusting cylinder 3 moves upward, and at the same time, the first threaded rod 703 is threadedly connected to the internal thread of the adjusting cylinder 3, so that the fixing frame 701 is fixedly connected to the main support rod 1, thereby limiting the horizontal movement of the knee support assembly 7. Since the knee support assembly 7 has only this one displacement, the first threaded rod 703 is fixedly connected to the main support rod 1 by adjusting the rotating cylinder 3, so that the knee support assembly 7 can be completely fixed, which also limits the rotation of the two side rods 2, so that the walker in the present application remains in the first form;

[0055] Finally, 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 can be freely adjusted to meet the needs of different groups of people. When in use, the rubber rod 6 at the top of the side rod 2 is placed under the armpit, which is more comfortable to use. The arm on this side naturally hangs down, and the palm of the hand grasps the handle at the lower end of the fixing frame 701 (not shown in the figure), and the walker in the present invention is used as an ordinary crutch. Since the entire knee support assembly 7 is located between the two side rods 2, the knee support assembly 7 will not affect people's use in this form.

[0056] Example 2, second form (fixed on the leg for hands-free use):

[0057] refer to Figure 2 First, rotate the adjustment cylinder 3 to separate the first threaded rod 703 from the adjustment cylinder 3, then pull the fixing frame 701 to control the knee support assembly 7 to move backward. The knee support assembly 7 pulls the connecting rod 10 to rotate the two side rods 2 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 is swung downward.

[0058] Secondly, while the support seat 702 is swinging downward, the adjustment cylinder 3 is controlled to dock with the second threaded rod 704. The second threaded rod 704 and the support seat 702 are rotatably connected, which facilitates the docking of the second threaded rod 704 and the adjustment cylinder 3. After the two are docked, the adjustment cylinder 3 is rotated to move the adjustment cylinder upward, and the second threaded rod 704 is threadedly connected to the internal thread of the adjustment cylinder 3. In this way, the knee support assembly 7 can be fixed, so that the walker of the present invention maintains the second form;

[0059] Then, the extension rods on the side rods 2 and the extension rods on the main support rod 1 are scaled to the appropriate length. When in use, the calf with an injured ankle is curled up and placed on the leg guard 706, with the knee resting on the soft connecting belt 708 and the cushion 705 pressed against the front of the thigh. Then, the two sets of fixing straps 8 on the support base 702 are fastened to the calf, and the fixing straps 8 on the side rods 2 are fastened to the thigh, thereby completely fixing the walker of the present invention to the leg.

[0060] Finally, the main support rod 1 acts as the user's calf, allowing for slow walking, freeing up both hands and making it easier for the user to perform 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.

[0061] Example 3:

[0062] Reference Attachment Figure 7 and Figure 8A 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 are located in the extension rod of the main support rod 1. The two pressure sensors 1204 are located in the same plane and are dispersed in the left and right directions of the main support rod 1. The indicator light 1203 is a ring light set on the outside of the rubber base. The buzzer 1202, the indicator light 1203 and the pressure sensor 1204 are electrically connected to the controller respectively.

[0063] The controller 1201 can use an MCU single-chip to process the signals sent by the two pressure sensors 1204, monitor the force applied to the main support rod 1 during stepping, determine the direction of deflection of the affected leg, and alert the user to make timely adjustments through the flashing indicator light 1203 and the sounding of the buzzer 1202 to prevent adverse effects on the recovery of the affected leg.

[0064] For example, parameters can be set for the controller so that in every 10 steps, the controller 1201 collects the signal values ​​from the front, rear, left and right pressure sensors 1204 to determine whether the pressure value on one side is the highest for 8 consecutive times. If so, it is determined that the main support rod 1 is tilted to that 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 tilted, the controller 1201 sends a signal to light up the indicator light 1203 and sound the buzzer 1202 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.

[0065] The walker in the present invention is different from the existing hands-free crutch. It not only retains the basic function of a handheld crutch and satisfies the need to be placed under the armpit for support, but also can change its form. After the knee support assembly is opened, the support seat can provide fixed support for the calf, achieving a hands-free effect. By setting the mounting seat, the two side rods can be rotated freely. By setting the four connecting rods, the four connecting rods connect the side rods to the knee support assembly. By manipulating the knee support assembly to move forward and backward, the two side rods can be driven to rotate synchronously, thereby changing the form of the walker and achieving a switch between being placed under the armpit for handheld use and being fixed on the leg for hands-free use. By setting the adjusting drum, the adjusting drum is used to connect the first threaded rod or the second threaded rod to the main support rod. The use of the adjusting drum can easily achieve the fixation of the two forms of the walker, avoiding shaking of the side rods or the knee support assembly, and ensuring stability and reliability during use.

[0066] It can be seen that the use of the walker provided in this application can effectively solve the problems that the existing crutches cannot change their structure to achieve hands-free use, and the existing hands-free walking aids cannot adjust their shapes for use.

[0067] The above embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A combined dual-purpose walker for below-knee injuries, comprising a retractable main support rod and two retractable side rods, the lower ends of the two side rods being bent, characterized in that: The upper end of the main support rod is coaxially threadedly connected to an adjusting rotary cylinder, the inner side of the upper end of the adjusting rotary cylinder is provided with an internal thread, and the outer side of the lower end is provided with an external thread; The two side rods are respectively located on both sides of the main support rod, and the lower end of the main support rod is fixedly connected to a mounting seat. The mounting seat is provided with two symmetrically arranged connecting grooves. The two side rods are rotatably connected in the two connecting grooves through bearings. The side rods can only rotate in the connecting grooves. The side rods and the mounting seat are inseparable. A soft rubber rod is fixedly connected to the upper end of the two side rods. The two side rods are respectively hinged with a same knee support assembly via a connecting rod. The knee support assembly is linked with the two side rods. When the knee support assembly moves in the horizontal direction, the two side rods rotate simultaneously on the mounting seat. The knee support assembly includes a vertical fixing frame, a support seat for supporting the calf is hingedly connected to the lower end of the fixing frame, a first threaded rod is fixedly connected to the lower end of the fixing frame, and a second threaded rod is rotatably connected to the back of the support seat, and the first threaded rod and the second threaded rod can be threadedly connected to the internal thread of the adjustment drum; The side rods and the support seat are respectively provided with fixing straps for fixing the legs.

2. A combined dual-purpose walker for below-knee injuries according to claim 1, characterized in that: A telescopically adjustable extension rod is inserted into the lower end of the main support rod, and a double-headed solid V-shaped positioning spring buckle is provided on the extension rod. Two rows of symmetrically arranged circular holes are opened on the main support rod. The beads on the positioning spring buckle are clipped into the circular holes at 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.

3. The combined dual-purpose walker for below-knee injuries according to claim 1, characterized in that: 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 fixing frame. One end of the connecting rod is rotatably connected to the retaining ring on the side rod, and the other end of the connecting rod is rotatably connected to the retaining ring on the fixing frame.

4. The combined dual-purpose walker for below-knee injuries according to claim 1, characterized in that: The fixing frame is a square frame, and the rod at the upper end of the frame is arranged in an arc shape. A plurality of equidistantly arranged fixing rods are arranged in the frame. A cushion is provided in the frame at the front side of the fixing rod, and the cushion is used to abut the thigh.

5. The combined dual-purpose walker for below-knee injuries according to claim 4, characterized in that: The support seat is fixedly connected to a leg guard plate with arc-shaped sides. The leg guard plate is provided with an avoidance groove. When the support seat and the fixing frame are closed, the avoidance groove corresponds to the connecting rod.

6. The combined dual-purpose walker for below-knee injuries according to claim 5, characterized in that: A soft connecting belt for wrapping the knees is fixedly connected to the lower end of the back cushion, and the other end of the soft connecting belt is fixedly connected to the leg guard.

7. The combined dual-purpose walker for below-knee injuries according to claim 1, characterized in that: There are two groups of fixing straps on the support seat, wherein the group of fixing straps close to the fixing frame is inclined to the front side and is used to fix the bend of the knee joint.

8. The combined dual-purpose walker for below-knee injuries according to claim 1, characterized in that: The main support rod, side rod and fixing frame are all made of aluminum alloy pipes, and the outer sides of the three are respectively wrapped with a soft protective layer.

9. The combined dual-purpose walker for below-knee injuries according to claim 2, characterized in that: The lower end of the extension rod is fixedly connected with a truncated cone-shaped rubber base.

10. The combined dual-purpose walker for below-knee injuries according to claim 9, characterized in that: A tilt alarm module is provided inside the rubber base, which includes a controller, a buzzer, an indicator light and two pressure sensors. The controller and the buzzer are located in the extension rod of the main support rod. The two pressure sensors are located in the same plane and are dispersed in the left and right directions of the main support rod. The indicator light is a ring light set on the outside of the rubber base. The buzzer, the indicator light and the pressure sensors are electrically connected to the controller respectively.

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