CN116850005B

CN116850005B - A combined dual-purpose walker for below-knee injuries

Info

Publication number: CN116850005B
Application number: CN202310045365.5A
Authority: CN
Inventors: 白金广; 贾虎林; 朱慧荣; 毕战强; 王倩; 汪田田; 杭庆丰; 陈文磊
Original assignee: Zhengzhou Pinkang Artificial Limb Orthosis Technology Co ltd
Current assignee: Zhengzhou Pinkang Artificial Limb Orthosis Technology Co ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2025-09-23
Anticipated expiration: 2043-01-30
Also published as: CN116850005A

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

Combined dual-purpose walking aid for knee injury

Technical Field

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

Background

The crutch is a walking aid tool after the disabled legs or the injured legs.

The common walking stick in life generally comprises two side rods, an adjustable supporting rod, an armpit support connected to the upper ends of the side rods and a handle connected to the middle of the side rods, when the walking stick is used, the armpit support is required to be placed under the armpits, the handle is gripped by the palm, so that the walking stick can be stably used for standing on a single foot, walking is assisted, one arm of a user is required to be occupied in the mode, and the walking stick is inconvenient to use.

If a person is injured only at the foot or ankle, the person's lower leg may be used as a temporary support during rehabilitation, thus freeing up both hands. In this regard, hand-free crutches have been designed by existing manufacturers, which bend the lower leg during use, the crutches are fixedly connected to the thigh and the lower leg, and the support bar supports the entire leg at the top of the lower leg as a stress point.

The utility model discloses a can consult chinese patent of application number CN202022319264.7, discloses a shank supporting angle adjustable hand-free walking stick, has set up a landing leg platform in the junction of last support piece and lower support piece for support crooked shank, and supporting platform can angle regulation, in order to change shank bending angle.

The Chinese patent with reference to the application number CN202110532107.0 discloses a lower limb rehabilitation auxiliary device, and also in order to liberate hands, a lower leg piece is arranged on a supporting foot stand for supporting the bent lower leg, a steering mechanism is arranged on a thigh piece for adjusting the angle of the lower leg piece, the adjustment of the bending angle of the lower leg can be realized, and a waist support mechanism is further arranged on the thigh piece, so that the lower limb rehabilitation auxiliary device is more firm in fixation.

However, the products disclosed in the above two patents are separated from the essence of the crutch, and the structure is too complex, so that the crutch is inconvenient to use along with daily life during the whole rehabilitation period. For example, in the product of the first patent, although the auxiliary grip is provided, the auxiliary grip is provided at a position deviated from one side of the upper support, and the leg plate cannot be retracted, so that the product cannot be clamped under the armpit like a normal crutch. The product in the second patent is mainly used for fixation and rehabilitation, has a more complex structure and cannot be used as a common crutch;

At present, the market length needs a dual-purpose walking aid which has a simple structure, can change the shape, can be used as a common hand-held crutch, and can be fixed with the lower leg to liberate both hands.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the application provides a combined type dual-purpose walking aid for the knee injury, which aims to solve the problems that the existing walking stick cannot change the structure to realize the hand-free operation and the existing hand-free walking aid cannot adjust the shape for use.

The knee support comprises a telescopic main support rod and two telescopic side rods, wherein the lower ends of the two side rods are bent, the upper ends of the main support rod are coaxially connected with an adjusting rotary drum in a threaded mode, inner threads are arranged on the inner sides of the upper ends of the adjusting rotary drum, outer threads are arranged on the outer sides of the lower ends of the adjusting rotary drum, the two side rods are respectively located on two sides of the main support rod, the lower end of the main support rod is fixedly connected with a mounting seat, two symmetrically arranged connecting grooves are formed in the mounting seat, the two side rods are respectively and rotatably connected in the two connecting grooves through bearings, the side rods can only rotate in the connecting grooves, the side rods are inseparable from the mounting seat, the upper ends of the two side rods are fixedly connected with a soft rubber rod, the two side rods are respectively and rotatably connected with the same knee support assembly through connecting rods, the knee support assembly is in linkage with the two side rods, when the knee support assembly moves in the horizontal direction, the two side rods are simultaneously rotated on the mounting seat, the knee support assembly comprises a vertical fixing frame, the lower end of the fixing frame is fixedly connected with a supporting seat for supporting the lower leg, the fixing frame is fixedly connected with a first threaded rod and a second threaded rod is fixedly connected with a threaded rod, and the threaded rod is fixedly connected with the threaded rod in the threaded rod and the threaded rod is fixedly connected with the threaded rod.

Preferably, the lower extreme of main tributary vaulting pole is pegged graft and is had a telescopic extension pole, is equipped with the solid V type of double-end location bullet knot on the extension pole, has seted up the round hole that two rows of symmetries set up on the main tributary vaulting pole, and the card pearl joint on the location bullet knot is in the round hole of co-altitude difference in order to adjust the extension pole and stretch out the length of main tributary vaulting pole, the telescopic adjustment mode of side lever is the same with the telescopic adjustment mode of main tributary vaulting pole.

Preferably, two groups of check rings for connecting the connecting rods are respectively arranged on the vertical sections of the side rods and the vertical rods of the fixing frame, one end of each connecting rod is rotationally connected in the check ring on the side rod, and the other end of each connecting rod is rotationally connected in the check ring on the fixing frame.

Preferably, the fixing frame is a square frame, rods at the upper end of the frame are arranged into an arc shape, 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.

Preferably, the support seat is fixedly connected with leg guard plates with two arc-shaped sides, the leg guard plates are provided with avoiding grooves, and the avoiding grooves correspond to the connecting rods when the support seat is closed with the fixing frame.

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

Preferably, the number of the fixing belts on the supporting seat is two, wherein one group of fixing belts close to the fixing frame inclines to the front side and is used for fixing the knee joint bending position.

Preferably, the lower end of the extension rod is fixedly connected with a round table type rubber base, the rubber base has elasticity, and the rubber base plays a role in shock absorption during use and protects the lower leg at the injured part.

Preferably, the main supporting rod, the side rods and the fixing frame are all aluminum alloy pipes, and the outer sides of the main supporting rod, the side rods and the fixing frame are respectively wrapped with a soft protective layer.

Preferably, the method comprises the steps of,

Compared with the prior art, the technical scheme provided by the application has the following remarkable effects:

1. the walking aid is different from the existing hand-free crutch, the basic function of the hand-free crutch is reserved, the support can be placed under the armpit for supporting, the shape can be changed, the supporting seat is opened for fixedly supporting the lower leg after the knee support component is opened, and the effect of hand-free is achieved.

2. Through the setting of mount pad, realize the free rotation of two side bars, put through four connecting rods, four connecting rods are connected side bar and knee support subassembly, control knee support subassembly back-and-forth movement and can drive two side bars synchronous rotation to change the form of helping the capable ware, can easily realize placing in the armpit handheld use and fixing and exempt from the switching between the handheld use of shank.

3. Through the setting of adjusting the rotary drum, adjust the rotary drum and be used for being connected first threaded rod or second threaded rod and main tributary vaulting pole, utilize to adjust the rotary drum and can conveniently realize fixing two kinds of forms of this walking aid ware, avoid side lever or knee to hold in the palm the subassembly and take place to rock, stable and reliable during the use.

Drawings

Fig. 1 is an isometric view of a first aspect of the application.

Fig. 2 is an isometric view of a second aspect of the application.

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

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

Figure 5 is a schematic view of the knee brace assembly of the present application with the knee brace assembly removed.

Fig. 6 is a schematic view of the knee brace assembly of the present application in an open and closed position.

FIG. 7 is a schematic view of the electronics inside the rubber mount of the present application.

Fig. 8 is a block diagram of the tilt alarm module.

Reference numerals in the schematic drawings illustrate:

1. Main supporting rod, 2, side rod, 3, adjusting rotary drum, 4, installation seat, 5, connecting groove, 6, rubber rod, 7, knee support assembly, 701, fixing frame, 702, supporting seat, 703, first threaded rod, 704, second threaded rod, 705, back cushion, 706, leg guard, 707, avoiding groove, 708, flexible connecting belt, 709, fixing rod, 8, fixing belt, 9, check ring, 10, connecting rod, 11, rubber base, 12, inclination alarm module, 1201, controller, 1202, buzzer, 1203, indicator light, 1204 and pressure sensor.

Description of the embodiments

In the following discussion, details are set forth to provide a more thorough understanding of the present application. However, it will be understood by those skilled in the art that the present application may be practiced without one or more of these details. In particular examples, some technical features that are well known in the art have not been described in detail in order to avoid obscuring the application. It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", and the like are used herein for illustrative purposes only and are not limiting.

Ordinal numbers such as "first" and "second" cited in the present application are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component," and the term "second component" does not itself connote the presence of "first component.

The following describes the embodiments of the present application in further detail with reference to the drawings.

As shown in fig. 1 to 6, the telescopic support comprises a telescopic main support bar 1 and two telescopic side bars 2, wherein the upper ends of the side bars 2 are vertical, and the lower ends of the side bars 2 are bent.

Further, in order to facilitate the adjustment of the use length of the main supporting rod 1 and the side rod 2, the lower end of the main supporting rod 1 is inserted with an extension rod which can be adjusted in a telescopic way, the extension rod is provided with a double-end solid V-shaped positioning snap fastener, the main supporting rod 1 is provided with two rows of symmetrically arranged round holes, the clamping beads on the positioning snap fastener are clamped in the round holes with different heights to adjust the length of the extension rod extending out of the main supporting rod 1, the adjustment mode is common, the adjustment is convenient, the stability and the firmness are realized, and the telescopic adjustment mode of the side rod 2 is the same as the telescopic adjustment mode of the main supporting rod 1.

Referring to fig. 5, two side bars 2 are respectively located at two sides of a main supporting bar 1, a mounting seat 4 is fixedly connected to the lower end of the main supporting bar 1, two symmetrically arranged connecting grooves 5 are arranged on the mounting seat 4, the two side bars 2 are respectively connected in the two connecting grooves 5 through bearings in a rotating way, the side bars 2 can only rotate in the connecting grooves 5, the side bars 2 are inseparable from the mounting seat 4, a soft rubber rod 6 is fixedly connected to the upper ends of the two side bars 2, the rotating arrangement of the side bars 2 and the main supporting bar 1 is an innovation point of the invention, and the shape is changed on the premise of keeping the original crutch structure and function so as to meet two different using modes.

Further, the connecting way of the connecting groove 5 and the side rod 2 can be selected to be connected by a directional support, so that the radial movement of the side rod 2 is limited, and the side rod 2 is prevented from being separated from the main supporting rod 1.

Referring to fig. 1 and 2, the two side bars 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 bars 2, and when the knee support assembly 7 moves back and forth in the horizontal direction, the two side bars 2 simultaneously rotate on the mounting seat 4.

The upper end of the main supporting rod 1 is coaxially connected with an adjusting rotary drum 3 in a threaded manner, an inner thread is arranged on the inner side of the upper end of the adjusting rotary drum 3, an outer thread is arranged on the outer side of the lower end of the adjusting rotary drum 3, anti-slip lines are arranged on the outer side of the upper end of the adjusting rotary drum 3, the adjusting rotary drum 3 is convenient to use in manual rotation operation, and the adjusting rotary drum 3 is matched with the knee support assembly 7 for positioning two use forms of the knee support assembly 7;

Specifically, referring to fig. 6, the above knee support assembly 7 includes a vertical fixing frame 701, a supporting seat 702 for supporting the lower leg is hinged to the lower end of the fixing frame 701, a first threaded rod 703 is fixedly connected to the lower end of the fixing frame 701, a second threaded rod 704 is rotatably connected to the back of the supporting seat 702, the first threaded rod 703 and the second threaded rod 704 are both threadably connected to the internal thread of the adjusting drum 3, the rotation direction of the internal thread is opposite to that of the external thread, so that the first threaded rod 703 or the second threaded rod 704 is conveniently and fixedly connected to the main supporting rod 1 through the adjusting drum 3, and the two threaded rods and the matching of the adjusting drum 3 correspond to the two usage forms of the walker respectively.

Further, referring to fig. 5 and 6, two sets of check rings 9 for connecting the connecting rod 10 are respectively provided on the vertical section of the side rod 2 and the vertical rod of the fixing frame 701, one end of the connecting rod 10 is rotatably connected in the check ring 9 on the side rod 2, and the other end of the connecting rod 10 is rotatably connected in the check ring 9 on the fixing frame 701, so that the position of the connecting rod 10 on the side rod 2 cannot be changed, and the knee support assembly 7 can only move in the horizontal direction under the limiting action of the connecting rod 10, thereby providing feasibility for stably maintaining two forms.

Referring to fig. 2 and 4, the side bar 2 and the support base 702 are respectively provided with fixing straps 8 for fixing legs, and in order to better fix the user's lower leg, the number of the fixing straps 8 on the support base 702 is two, wherein one group of fixing straps 8 near the fixing frame 701 is inclined toward the front side for fixing the knee joint bending part.

Further, in order to facilitate the connection of the fixing frame 701 with the side bar 2 through the connecting rod 10 and the convenient grasping of the fixing frame 701 by hand to control the knee-rest assembly 7 to move back and forth, the fixing frame 701 is a square frame, the bars at the upper end of the frame are arranged into an arc shape, a plurality of fixing bars 709 are arranged in the frame at equal intervals, a cushion 705 is arranged in the frame and positioned at the front side of the fixing bars 709, the cushion 705 is fixedly connected to the fixing bars 709, and the cushion 705 is used for abutting the thigh, so that the fixing is firmer and more comfortable.

Further, in order to better fix and protect the lower leg, a leg guard plate 706 with arc sides is fixedly connected to the supporting seat 702, an avoidance groove 707 is formed in the leg guard plate 706, and when the supporting seat 702 and the fixing frame 701 are closed, the avoidance groove 707 corresponds to the connecting rod 10, so that the supporting seat 702 and the fixing frame 701 can be completely closed.

Further, in order to protect the knee of the user suffering from the leg, a flexible connection strap 708 is fixedly connected to the lower end of the cushion 705 for wrapping the knee, and the other end of the flexible connection strap 708 is fixedly connected to the leg shield 706, so that the knee is abutted to the flexible connection strap 708, and the flexible connection strap 708 provides a good protection effect for the knee when in use.

Further, in order to reduce the acting force on the shank of the affected leg during use, the lower end of the extension rod is fixedly connected with a truncated cone-shaped rubber base 11, and the rubber base 11 has elasticity, plays a role in damping during use, and protects the shank on the fixed side.

Further, in order to make the walker of the present invention lighter and more firm, the main supporting bars 1, the side bars 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.

The walker of the present invention described above may be used in two different configurations;

Example 1, first modality (underarm support hand-held use):

Referring to fig. 1, first, the fixing frame 701 is manually pulled to control the knee-rest assembly 7 to move back and forth in the horizontal direction until the side rod 2, the connecting rod 10, the fixing frame 701 and the main supporting rod 1 are located on the same plane, then the supporting seat 702 swings in the direction indicated by the arrow in fig. 6 until the supporting seat 702 is completely closed with the fixing frame 701, at this time, the avoiding groove 707 on the leg guard 706 corresponds to the connecting rod 10 above the fixing frame 701, the arc-shaped leg guard 706 does not obstruct the closing of the supporting seat 702, and then the fixing strap 8 on the supporting seat 702 is bound on the fixing frame 701, so that the supporting seat 702 and the fixing frame 701 are connected together;

Then, the adjusting drum 3 is manually rotated, so that the adjusting drum 3 moves upwards, and meanwhile, the first threaded rod 703 is also in threaded connection with the internal thread of the adjusting drum 3, so that the fixing frame 701 is fixedly connected with the main supporting rod 1, and the movement of the knee support assembly 7 in the horizontal direction can be limited, and the knee support assembly 7 can be completely fixed by fixedly connecting the first threaded rod 703 with the main supporting rod 1 through the adjusting drum 3 due to the fact that the knee support assembly 7 has only one displacement, so that the rotation of the two side rods 2 is limited, and the walker in the application is kept in the first form;

Finally, the height of the extension rod at the lower end of the main supporting rod 1 and the height of the extension rod on the side rods 2 are freely adjusted to meet the requirements of different people, when the walking aid is used, the rubber rod 6 positioned at the top of the side rods 2 is placed under the armpits, so that the walking aid is more comfortable to use, the arms at the side naturally droop, the palm grips the handle (not shown in the figure) positioned at the lower end of the fixing frame 701, and the walking aid is used as a common walking stick, and the whole knee support assembly 7 is positioned between the two side rods 2, so that the knee support assembly 7 cannot influence people to use in the mode.

Example 2, second modality (fixed in leg hands-free use):

Referring to fig. 2, firstly, the adjusting drum 3 is rotated to separate the first threaded rod 703 from the adjusting drum 3, then the fixing frame 701 is pulled to control the knee support assembly 7 to move backward, the knee support assembly 7 pulls the connecting rod 10 to synchronously rotate the two side rods 2, the upper ends of the two side rods 2 move to the rear of the main supporting rod 1, and then the supporting seat 702 is swung downward;

Secondly, when the supporting seat 702 swings downwards, the adjusting drum 3 is controlled to be in butt joint with the second threaded rod 704, the second threaded rod 704 is in rotary connection with the supporting seat 702, so that the butt joint of the second threaded rod 704 and the adjusting drum 3 is facilitated, after the second threaded rod 704 and the adjusting drum 3 are in butt joint, the adjusting drum 3 is rotated again, the adjusting rotation moves upwards, the second threaded rod 704 is in threaded connection with the internal thread of the adjusting drum 3, and therefore the knee support assembly 7 can be fixed, and the walker in the invention keeps a second form;

Then, the extension rod on the side rod 2 and the extension rod on the main support rod 1 are scaled to proper lengths, when the walker is used, the ankle-injured shank is contracted and placed on the shank protection plate 706, the knees are abutted against the soft connecting belts 708, the back cushion 705 is extruded on the front side of the thigh, two groups of fixing belts 8 on the support seat 702 are bound on the shank, and the fixing belts 8 on the side rod 2 are bound on the thigh, so that the walker is completely fixed on the leg;

Finally, the main supporting rod 1 serves as the lower leg of the user, can walk slowly, liberates both hands, and is convenient for the user to vacate the hands for other operations, and in addition, the fixing frame 701 can be held by the palm when necessary, so that falling is prevented.

Example 3:

Referring to fig. 7 and 8, a tilt alarm module 12 is arranged in the rubber base 11, the tilt alarm module comprises a controller 1201, a buzzer 1202, an indicator lamp 1203 and two pressure sensors 1204, the controller 1201 and the buzzer 1202 are positioned in the extension rod of the main support rod 1, the two pressure sensors 1204 are positioned on the same plane and are dispersed in the left and right directions of the main support rod 1, the indicator lamp 1203 is arranged on the outer side of the rubber base by adopting an annular lamp, and the buzzer 1202, the indicator lamp 1203 and the pressure sensors 1204 are respectively in controller electric connection;

The controller 1201 can adopt MCU singlechip chip to handle the signal that two pressure sensor 1204 sent, monitor the atress condition of main tributary vaulting pole 1 in the process of marking time, judge the skew direction of suffering from the leg to twinkle and buzzer 1202 sound through the pilot lamp 1203, the warning user in time makes the adjustment, in order to prevent causing harmful effects to the recovered of suffering from the leg.

For example, parameters may be set for the controller, and the controller 1201 may collect signal values from the front and rear pressure sensors 1204 and the left and right pressure sensors in every 10 steps, determine whether the pressure value of one side is the highest value for 8 consecutive times, determine that the main support bar 1 is inclined to the side, and determine that the main support bar 1 is normal if the main support bar 1 is not inclined, and if the main support bar 1 is determined to be inclined, the controller 1201 sends a signal to light the indicator lamp 1203, sound the buzzer 1202, remind the user to adjust the height of the main support bar 1, or change the unfolding angle of the knee support assembly 7.

The walking aid is different from the existing hand-free walking stick, the basic function of the hand-free walking stick is reserved, the walking aid can be placed under armpits for supporting, the shape can be changed, and the supporting seat is opened to fixedly support the lower leg part, so that the hand-free effect is realized. Through the setting of mount pad, realize the free rotation of two side bars, put through four connecting rods, four connecting rods are connected side bar and knee support subassembly, control knee support subassembly back-and-forth movement and can drive two side bars synchronous rotation to change the form of walking aid, realize placing in the armpit handheld use and fix the switching between the handheld use of exempting from of shank. Through the setting of adjusting the rotary drum, adjust the rotary drum and be used for being connected first threaded rod or second threaded rod and main tributary vaulting pole, utilize to adjust the rotary drum and can conveniently realize fixing two kinds of forms of this walking aid ware, avoid side lever or knee to hold in the palm the subassembly and take place to rock, stable and reliable during the use.

Therefore, the walking aid provided by the application can effectively solve the problems that the existing walking stick can not change the structure to realize the hand-free operation, and the existing hand-free walking aid tool can not adjust the shape.

The foregoing examples have been presented for the purpose of illustrating only a few embodiments of the application and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A modular 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. The main support rod has an upper end coaxially threadedly connected to an adjustment cylinder, the upper end of the adjustment cylinder having an internal thread on the inner side and an external thread on the outer side of the lower end.

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, the extension rod is provided with a double-headed solid V-shaped positioning spring buckle, and two rows of symmetrically arranged circular holes are opened on the main support rod. The beads on the positioning spring buckle are snapped into the circular holes at different heights to adjust the length of the extension rod extending out of the main support rod, and the telescopic adjustment method of the side rod is the same as that of the main support rod.

3. A 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 sections of the side rods and the vertical rods 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. A 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 located at the upper end of the frame is arranged in an arc shape, a plurality of equally spaced fixing rods are arranged in the frame, and a cushion is provided in the frame located in front of the fixing rod, and the cushion is used to abut the thigh.

5. A 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 with arc-shaped legs on both sides, and an avoidance groove is provided on the leg guard. When the support seat and the fixing frame are closed, the avoidance groove corresponds to the connecting rod.

6. A combined dual-purpose walker for below-knee injuries according to claim 5, characterized in that a soft connecting belt for wrapping the knee 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. A combined dual-purpose walker for below-knee injuries according to claim 1, characterized in that there are two sets of fixing straps on the support seat, wherein the set of fixing straps close to the fixing frame is inclined toward the front side and is used to fix the knee joint bend.

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, wherein the lower end of the extension rod is fixedly connected to a truncated cone-shaped rubber base.

10. A 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, the tilt alarm module 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, and the buzzer, the indicator light and the pressure sensors are electrically connected to the controller respectively.