阅读说明：本技术 一种骨科腿部固定器 (Orthopedics shank fixer ) 是由 李同春 刘龙飞 唐俊梅 于 2021-09-09 设计创作，主要内容包括：本发明涉及一种骨科腿部固定器,包括运动架与固定架,所述运动架上端面固定安装有固定架,所述运动架包括固定板、弧形凹槽、电动伸缩杆、方形板、减震弹簧、弧形板与万向轮,所述固定架包括环形板一、环形板二、橡胶气囊一、伸缩杆一、伸缩杆二、伸缩板、环形挡板与橡胶气囊二,本发明通过固定架对伤患腿部进行固定,利用大腿对固定架进行定位,通过大腿与伤患上半身对固定架进行支撑,同时利用橡胶气囊一与橡胶气囊二使固定器与伤患腿部紧密贴合,方便拆除,且橡胶气囊一与橡胶气囊二内的气体体积形状随着伤患腿部肌肉脂肪的变形而变形,以防止固定器在伤患行走站立状态下向下移动,通过运动架辅助伤患行走。(The invention relates to an orthopedic leg fixator, which comprises a moving frame and a fixed frame, wherein the fixed frame is fixedly arranged on the upper end surface of the moving frame, the moving frame comprises a fixed plate, an arc-shaped groove, an electric telescopic rod, a square plate, a damping spring, an arc-shaped plate and universal wheels, the fixed frame comprises a first annular plate, a second annular plate, a first rubber air bag, a first telescopic rod, a second telescopic rod, a telescopic plate, an annular baffle plate and a second rubber air bag, the injured leg is fixed through the fixed frame, the fixed frame is positioned through thighs, the fixed frame is supported through the thighs and the upper half of the injured body, the fixator is tightly attached to the injured leg through the first rubber air bag and the second rubber air bag, the dismantling is convenient, and the volume shape of gas in the first rubber air bag and the second rubber air bag deforms along with the deformation of muscle fat of the injured leg to prevent the fixator from moving downwards in a standing state of the injured leg, the patient is assisted to walk by the motion frame.)

1. The utility model provides an orthopedics shank fixer, includes motion frame (1) and mount (2), its characterized in that: the upper end surface of the moving frame (1) is fixedly provided with a fixed frame (2); wherein:

the movement frame (1) comprises a fixing plate (11), an arc-shaped groove (12), an electric telescopic rod (13), a square plate (14), a damping spring (15), an arc-shaped plate (16) and universal wheels (17), wherein the arc-shaped groove (12) is formed in the lower side of the fixing plate (11), the electric telescopic rod (13) is fixedly installed on the lower end face of the arc-shaped groove (12), the square plate (14) is fixedly installed on the lower end face of the electric telescopic rod (13), the damping spring (15) is uniformly and fixedly installed on the lower end face of the square plate (14), an arc-shaped block is fixedly installed on the lower end face of the damping spring (15), and the universal wheels (17) are fixedly installed on the lower side of the arc-shaped plate (16);

the fixing frame (2) comprises a first annular plate (21), a second annular plate (22), a first rubber air bag (24), a first telescopic rod (25), a second telescopic rod (26), a telescopic plate (27), a first annular baffle plate (28) and a second rubber air bag (29), one end of the first annular plate (21) is rotatably connected with the second annular plate (22) through a pin shaft, the tail end of the second annular plate (22) is clamped with the other end of the first annular plate (21), the inner end faces of the first annular plate (21) and the second annular plate (22) are fixedly provided with the first rubber air bag (24), the lower end faces of the first annular plate (21) and the second annular plate (22) are uniformly and fixedly provided with the first telescopic rods (25) along the circumferential direction, the lower end face of the first telescopic rod (25) is rotatably connected with the second telescopic rod (26) through a pin shaft, the second telescopic rod (26) is connected with the telescopic plate (27) in a sliding fit manner, and the upper end and the lower end of the telescopic plate (27) are fixedly provided with the annular baffle plate (28), a second rubber air bag (29) is fixedly arranged on the inner end surface of the annular baffle plate (28).

2. An orthopaedic leg fixator according to claim 1 wherein: universal wheel (17) are including bearing (171), II type board (172), rotate wheel (173), arc brush board (174) and scrape flitch (175), arc board (16) downside fixed mounting has bearing (171), both sides symmetry fixed mounting has II type board (172) about bearing (171) lower terminal surface, II type board (172) downside is connected with through the rotation axis rotation and rotates wheel (173), rotate wheel (173) outer terminal surface fixed mounting has rubber tire (174), II type board (172) inboard lower terminal surface fixed mounting has arc brush board (174), arc brush board (174) downside just is located equal fixed mounting between the brush hair and scrapes flitch (175).

3. An orthopaedic leg fixator according to claim 1 wherein: the first annular plate (21) is of a telescopic structure, a binding belt (211) is fixedly mounted on the front side of the upper end face of the first annular plate (21), a hanging ring (212) is fixedly mounted at the tail end of the binding belt (211), and a hook (213) is fixedly mounted on the rear side of the upper end face of the first annular plate (21).

4. An orthopaedic leg fixator according to claim 1 wherein: rubber air bag (24) up end fixed mounting has intake pipe (241), and fixed mounting has miniature air pump (242) on intake pipe (241), and rubber air bag (24) up end is fixed and is being had gas vent (243), is connected with rubber buffer (244) with threaded connection's mode in gas vent (243).

5. An orthopaedic leg fixator according to claim 1 wherein: an arc-shaped groove is formed in the lower end face of the first telescopic rod (25), a first electromagnetic plate (251) is fixedly mounted on the inner end face of the arc-shaped groove, and lubricating balls (252) are uniformly arranged on the lower end face of the first electromagnetic plate (251) in a sliding mode along the circumferential direction of the first electromagnetic plate.

6. An orthopaedic leg fixation device according to claim 5, wherein: the utility model discloses a positioning ring plate, including telescopic link two (26) and telescopic link one (25) contact end face fixed mounting have magnetism inhale board (261), magnetism inhale the magnetism of board (261) and the magnetism on the electromagnetic plate one (251) after the circular telegram opposite, magnetism inhale board (261) up end smooth, terminal surface fixed mounting has positioning ring plate one (262) under left telescopic link two (26), positioning ring plate one (262) one end is connected with positioning ring plate two (263) through the round pin hub rotation, the looks joint between the terminal of positioning ring plate two (263) and the positioning ring plate one (262) other end, terminal surface fixed connection under two (26) of telescopic link on positioning ring plate two (263) up end and the right side.

7. An orthopaedic leg fixator according to claim 1 wherein: the expansion plate (27) comprises a sliding block (271), a sector block (272) and an expansion rod (273), the sliding block (271) is uniformly connected with the expansion rod II (26) in a sliding fit mode along the linearity of the expansion rod II, the sector block (272) is connected with the middle part of the sliding block (271) adjacent to the same horizontal plane in a sliding fit mode, and the expansion rod (273) is fixedly installed on the opposite end faces of the sliding block (271) adjacent to the same vertical plane.

8. An orthopaedic leg fixator according to claim 1 wherein: the annular baffle (28) is of an annular telescopic structure, the inner end face of the second rubber air bag (29) is fixedly provided with a sponge ring (281), and the head end and the tail end of the annular baffle (28) are connected in a clamping manner.

Technical Field

The invention relates to the technical field of orthopedic auxiliary instruments, in particular to an orthopedic leg fixing device.

Background

After the orthopedic injuries are treated, the orthopedic injuries need to be rested, but the injuries can not be walked in daily life, in order to reduce the influence on the injuries, the injuries can only slightly and slowly move, so that the normal activities of the injuries and the injuries are influenced, therefore, auxiliary instruments are needed to help the injuries and the injuries move in daily life, the traditional leg fixer is generally used for fixing the injured legs, the injuries and the injuries are prevented from being torn in daily life, meanwhile, the injuries and the injuries are better placed in the fixer by using foam filling agents, but the whole operation is generally carried out when the injuries and the injuries are laid down, therefore, when the injuries and the injuries are walked, the injured legs need to bear the weight of the fixer, the injuries and the injuries are walked, because the foam filling agents are solid after being solidified, and the legs are elastic, when the fat of the legs is locally deformed by gravity, the fixer moves downwards under the action of gravity, affecting the protective effect of the leg wound.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an orthopedic leg fixator.

An orthopedic leg fixer comprises a moving frame and a fixed frame, wherein the fixed frame is fixedly arranged on the upper end surface of the moving frame; wherein:

the motion frame comprises a fixed plate, an arc-shaped groove, an electric telescopic rod, a square plate, a damping spring, an arc-shaped plate and universal wheels, wherein the arc-shaped groove is formed in the lower side of the fixed plate; the leg that the wounded and wounded were fixed through the mount at first, when the wounded needs to walk, the wounded at first stood, through universal wheel and walking plane contact this moment, when walking planar surface unevenness, utilize damping spring to reduce the stationary plate and feel at the produced jolt of universal wheel pivoted in-process, when needs are packed up the universal wheel, utilize electric telescopic handle to drive the universal wheel upward movement and get into the arc recess.

The fixing frame comprises a first annular plate, a second annular plate, a first rubber air bag, a first telescopic rod, a second telescopic rod, a telescopic plate, a first annular baffle plate and a second rubber air bag, one end of the first annular plate is rotatably connected with the second annular plate through a pin shaft, the tail end of the second annular plate is clamped with the other end of the first annular plate, the inner end surfaces of the first annular plate and the second annular plate are fixedly provided with the first rubber air bag, the lower end surfaces of the first annular plate and the second annular plate are uniformly and fixedly provided with the first telescopic rod along the circumferential direction, the lower end surface of the telescopic rod is rotatably connected with the second telescopic rod through the pin shaft, the second telescopic rod is connected with the telescopic plate in a sliding fit manner, the upper end and the lower end of the telescopic plate are fixedly provided with the annular baffle plate, and the inner end surface of the annular baffle plate is fixedly provided with the second rubber air bag; the method comprises the steps of firstly placing a first annular plate at the lower end of a leg of a patient, aligning the joint of a first telescopic rod and a second telescopic rod with the knee of the patient, clamping the second annular plate and the first annular plate, simultaneously inflating a first rubber air bag, enabling the rubber air bag to be in close contact with the thigh of the patient, if the lower leg of the patient has a wound, respectively moving annular baffles at the upper side and the lower side of the wound to the upper side and the lower side of the wound, and inflating a second rubber air bag, enabling the second rubber air bag to be in close contact with the upper side and the lower side of the wound.

According to the first preferred technical scheme, the universal wheel comprises a bearing, a II-shaped plate, a rotating wheel, an arc-shaped brush plate and scraping plates, the bearing is fixedly mounted on the lower side of the arc-shaped plate, the II-shaped plate is symmetrically and fixedly mounted on the left side and the right side of the lower end surface of the bearing, the rotating wheel is rotatably connected to the lower side of the II-shaped plate through a rotating shaft, a rubber tire is fixedly mounted on the outer end surface of the rotating wheel, the arc-shaped brush plate is fixedly mounted on the lower end surface of the inner side of the II-shaped plate, and the scraping plates are fixedly mounted on the lower side of the arc-shaped brush plate and located between bristles; the arc-shaped brush plate is matched with the scraping plate to scrape off dust and mud on the surface of the rotating wheel in the moving process.

According to the second preferred technical scheme, the first annular plate is of a telescopic structure, a binding belt is fixedly installed on the front side of the upper end face of the first annular plate, a hanging ring is fixedly installed at the tail end of the binding belt, and a hook is fixedly installed on the rear side of the upper end face of the first annular plate; because the fat thin degree of the sick and wounded is different, consequently make the space diameter that forms between annular plate one and the annular plate two be greater than the shank diameter of the sick and wounded through the annular plate one of scalable structure, link to each other the link that will bind on the area around the sick and wounded's neck with the couple to utilize the sick and wounded upper part of the body to support the impaired shank of downside.

According to the preferred technical scheme, an air inlet pipe is fixedly arranged on the upper end face of the rubber air bag I, a miniature air pump is fixedly arranged on the air inlet pipe, the upper end face of the rubber air bag I is fixedly provided with an air outlet, and a rubber plug is connected in the air outlet in a threaded connection manner; the miniature air pump is used for introducing air into the first rubber air bag, the air in the first rubber air bag is discharged through the air outlet, so that the size of the first rubber air bag is controlled, and the air outlet is sealed through the rubber plug.

According to the preferred technical scheme, an arc-shaped groove is formed in the lower end face of the telescopic rod, a first electromagnetic plate is fixedly mounted on the inner end face of the arc-shaped groove, and lubricating balls are uniformly arranged on the lower end face of the first electromagnetic plate in a sliding mode along the circumferential direction of the first electromagnetic plate; when the wounded leg can not be bent or only can be located at a certain angle, the first electromagnetic plate is electrified, so that the first electromagnetic plate is attracted to the magnetic suction plate, when the wounded leg can be bent, the first electromagnetic plate is powered off, friction force between the first electromagnetic plate and the second telescopic rod is reduced through the lubricating balls, and accordingly abrasion loss between the first electromagnetic plate and the second telescopic rod is reduced.

According to the preferred technical scheme, a magnetic suction plate is fixedly mounted on the contact end face of the second telescopic rod and the first telescopic rod, the magnetism of the magnetic suction plate is opposite to that of the electrified first electromagnetic plate, the upper end face of the magnetic suction plate is smooth, a first positioning ring plate is fixedly mounted on the lower end face of the second telescopic rod on the left side, one end of the first positioning ring plate is rotatably connected with a second positioning ring plate through a pin shaft, the tail end of the second positioning ring plate is clamped with the other end of the first positioning ring plate, and the upper end face of the second positioning ring plate is fixedly connected with the lower end face of the second telescopic rod on the right side; further reduce the frictional force between the board is inhaled to electromagnetism board one and magnetism through the glossy magnetism of up end to reduce the wearing and tearing volume between the board is inhaled to electromagnetism board one and magnetism, cooperate with two holding ring boards through holding ring board one, fix a position two lower extremes of telescopic link, fix a position wounded's shank downside simultaneously.

According to the preferred technical scheme, the telescopic plate comprises sliding blocks, fan-shaped blocks and telescopic rods, the sliding blocks are uniformly connected to the upper edge of the telescopic rod II in a sliding fit mode along the linearity of the telescopic rod II, the fan-shaped blocks are connected to the middle parts of the sliding blocks adjacent to each other on the same horizontal plane in a sliding fit mode, and the telescopic rods are fixedly installed on the opposite end faces of the sliding blocks adjacent to each other on the same vertical plane; the fan-shaped blocks are positioned through the sliding blocks and connected through the connecting springs, and when the distance between the two telescopic rods is changed, the length of the fan-shaped blocks extending out of the sliding blocks is changed, so that the second telescopic rods are prevented from interfering in movement.

According to the preferred technical scheme, the annular baffle is of an annular telescopic structure, the inner end faces of the two rubber air bags are fixedly provided with sponge rings, and the head end and the tail end of the annular baffle are connected in a clamping manner; because the diameter of annular baffle changes along with the fat thin degree of wounded, consequently annular baffle is annular extending structure, and rubber air bag two is located both sides about the wound of wounded respectively, and with the wound shank in close contact with, consequently gives rubber air bag two and the wound shank between a flexible volume through the sponge piece, prevents to suffer from the leg and receives the extrusion force great, influences blood circulation, finally influences the wound and resumes.

The invention has the following beneficial effects: 1. the invention provides an orthopedic leg fixator, which is characterized in that a wounded leg is fixed through a fixing frame, the fixing frame is positioned through a thigh, the fixing frame is supported through the thigh and the wounded upper half body, meanwhile, the fixator is tightly attached to the wounded leg through a rubber air bag I and a rubber air bag II, the fixator is convenient to detach, the volume shapes of air in the rubber air bag I and the rubber air bag II deform along with the deformation of muscle fat of the wounded leg, the fixator is prevented from moving downwards in a standing state of the wounded leg during walking, and the wounded leg is assisted to walk through a motion frame.

2. According to the sports frame provided by the invention, the diameter of a space formed between the first annular plate and the second annular plate is larger than the diameter of the leg of the injured person through the first annular plate with a telescopic structure so as to adapt to the injured persons with different fat and thin degrees, and the hanging ring on the binding belt is connected with the hook by bypassing the neck of the injured person, so that the upper body of the injured person is utilized to support the leg with the damaged lower side.

3. The fixing frame is matched with the magnetic attraction plate through the first electromagnetic plate to control whether the leg of the patient can be bent or not, and the friction force between the first electromagnetic plate and the second telescopic rod is reduced through the lubricating balls, so that the abrasion loss between the first electromagnetic plate and the second telescopic rod is reduced.

4. The fixing frame provided by the invention can provide a deformable amount between the second rubber air bag and the injured leg through the sponge block, so that the injured leg is prevented from being extruded by a large force to influence blood circulation and finally influence wound recovery.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the caster of the present invention.

Fig. 3 is a schematic perspective view of the vent and the rubber stopper of the present invention.

Fig. 4 is a schematic front plan view of the first and second extendable rods of the present invention.

Fig. 5 is a front plan view of the annular baffle of the present invention.

FIG. 6 is a schematic plan view of the arc-shaped brush plate and the scraper plate according to the present invention.

In the figure: 1. a motion frame; 11. a fixing plate; 12. an arc-shaped groove; 13. an electric telescopic rod; 14. a square plate; 15. a damping spring; 16. an arc-shaped plate; 17. a universal wheel; 171. a bearing; 172. II-shaped plates; 173. a rotating wheel; 174. an arc-shaped brush plate; 175. a scraping plate; 2. a fixed mount; 21. a first annular plate; 211. binding the binding belt; 212. hanging a ring; 213. hooking; 22. a second annular plate; 24. a rubber air bag I; 241. an air inlet pipe; 242. a micro air pump; 243. an exhaust port; 244. a rubber plug; 25. a first telescopic rod; 251. a first electromagnetic plate; 252. lubricating the beads; 26. a second telescopic rod; 261. a magnetic attraction plate; 262. a first positioning ring plate; 263. a second positioning ring plate; 27. a retractable plate; 271. a slider; 272. a sector block; 273. a telescopic rod; 28. an annular baffle; 281. a sponge ring; 29. and a second rubber air bag.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an orthopedic leg fixator comprises a moving frame 1 and a fixed frame 2, wherein the fixed frame 2 is fixedly mounted on the upper end surface of the moving frame 1; wherein:

referring to fig. 1 and 2, the moving frame 1 includes a fixed plate 11, an arc-shaped groove 12, an electric telescopic rod 13, a square plate 14, a damping spring 15, an arc-shaped plate 16 and a universal wheel 17, the arc-shaped groove 12 is formed in the lower side of the fixed plate 11, the electric telescopic rod 13 is fixedly mounted on the lower end face of the arc-shaped groove 12, the square plate 14 is fixedly mounted on the lower end face of the electric telescopic rod 13, the damping spring 15 is uniformly and fixedly mounted on the lower end face of the square plate 14, an arc-shaped block is fixedly mounted on the lower end face of the damping spring 15, and the universal wheel 17 is fixedly mounted on the lower side of the arc-shaped plate 16; firstly, the leg which is injured by the patient is fixed through the fixing frame 2, when the patient needs to walk, the patient stands firstly, at the moment, the patient contacts with the walking plane through the universal wheel 17, when the surface of the walking plane is uneven, the bumping feeling generated in the rotating process of the universal wheel 17 by the fixing plate 11 is reduced through the damping spring 15, and when the universal wheel 17 needs to be folded, the universal wheel 17 is driven to move upwards to enter the arc-shaped groove 12 through the electric telescopic rod 13.

Referring to fig. 1, the fixing frame 2 comprises a first annular plate 21, a second annular plate 22, a first rubber air bag 24, a first telescopic rod 25, a second telescopic rod 26, a telescopic plate 27, a second annular baffle 28 and a second rubber air bag 29, one end of the first annular plate 21 is rotatably connected with the second annular plate 22 through a pin shaft, the tail end of the second annular plate 22 is clamped with the other end of the first annular plate 21, the first rubber air bag 24 is fixedly installed on the inner end faces of the first annular plate 21 and the second annular plate 22, the first telescopic rods 25 are uniformly and fixedly installed on the lower end faces of the first annular plate 21 and the second annular plate 22 along the circumferential direction of the annular plate, the second telescopic rod 26 is rotatably connected with the lower end face of the first telescopic rod 25 through a pin shaft, the second telescopic rod 26 is connected with the telescopic plate 27 in a sliding fit manner, the annular baffle 28 is fixedly installed on the upper end face and the lower end face of the inner end plate 27, and the second rubber air bag 29 is fixedly installed on the annular baffle 28; firstly, the annular plate 21 is placed at the lower end of the leg of the patient, the joint of the telescopic rod 25 and the telescopic rod 26 is aligned with the knee of the patient, at the moment, the annular plate 22 and the annular plate 21 are clamped, the rubber air bag 24 is inflated at the same time, so that the rubber air bag is in close contact with the thigh of the patient, if the lower leg of the patient has a wound, the annular baffles 28 on the upper side and the lower side are respectively moved to the upper side and the lower side of the wound, and the rubber air bag 29 is inflated, so that the rubber air bag 29 is in close contact with the upper side and the lower side of the wound.

Referring to fig. 1, 2 and 6, the universal wheel 17 includes a bearing 171, an n-shaped plate 172, a rotating wheel 173, an arc-shaped brush plate 174 and a scraping plate 175, the bearing 171 is fixedly mounted on the lower side of the arc-shaped plate 16, the n-shaped plate 172 is symmetrically and fixedly mounted on the left and right sides of the lower end surface of the bearing 171, the rotating wheel 173 is rotatably connected to the lower side of the n-shaped plate 172 through a rotating shaft, a rubber tire 174 is fixedly mounted on the outer end surface of the rotating wheel 173, the arc-shaped brush plate 174 is fixedly mounted on the lower end surface of the inner side of the n-shaped plate 172, and the scraping plate 175 is fixedly mounted on the lower side of the arc-shaped brush plate 174 and between the bristles; the arc-shaped brush plate 174 cooperates with the scraper plate 175 to scrape off dust and mud on the surface of the rotating wheel 173 during the movement.

Referring to fig. 1, the first annular plate 21 is of a telescopic structure, a binding band 211 is fixedly installed on the front side of the upper end surface of the first annular plate 21, a hanging ring 212 is fixedly installed at the tail end of the binding band 211, and a hook 213 is fixedly installed on the rear side of the upper end surface of the first annular plate 21; as the fatness degree of the wounded is different, the diameter of the space formed between the first annular plate 21 and the second annular plate 22 is larger than the diameter of the leg of the wounded through the first annular plate 21 with the telescopic structure, and the hanging ring 212 on the binding belt 211 is connected with the hanging hook 213 by bypassing the neck of the wounded, so that the upper body of the wounded is used for supporting the leg with the damaged lower side.

Referring to fig. 1 and 3, an air inlet pipe 241 is fixedly installed on the upper end surface of the first rubber air bag 24, a micro air pump 242 is fixedly installed on the air inlet pipe 241, an air outlet 243 is fixed on the upper end surface of the first rubber air bag 24, and a rubber plug 244 is connected in the air outlet 243 in a threaded connection manner; the micro air pump 242 is used for introducing air into the rubber air bag 24, the air in the rubber air bag 24 is discharged through the air outlet 243, so that the volume of the rubber air bag 24 is controlled, and the air outlet 243 is sealed through the rubber plug 244.

Referring to fig. 1 and 4, an arc-shaped groove is formed in the lower end surface of the first telescopic rod 25, a first electromagnetic plate 251 is fixedly mounted on the inner end surface of the arc-shaped groove, and lubricating balls 252 are uniformly arranged on the lower end surface of the first electromagnetic plate 251 in a sliding manner along the circumferential direction of the first electromagnetic plate 251; when the wounded leg can not be bent or can only be positioned at a certain angle, the first electromagnetic plate 251 is electrified, so that the first electromagnetic plate 251 and the magnetic attraction plate 261 are attracted, when the wounded leg can be bent, the first electromagnetic plate 251 is powered off, the friction force between the first electromagnetic plate 251 and the second telescopic rod 26 is reduced through the lubricating balls 252, and therefore the abrasion loss between the first electromagnetic plate 251 and the second telescopic rod 26 is reduced.

Continuing to refer to fig. 1 and 4, a magnetic attraction plate 261 is fixedly installed on the contact end face of the second telescopic rod 26 and the first telescopic rod 25, the magnetism of the magnetic attraction plate 261 is opposite to that of the first electromagnetic plate 251 after being electrified, the upper end face of the magnetic attraction plate 261 is smooth, a first positioning ring plate 262 is fixedly installed on the lower end face of the second telescopic rod 26 on the left side, one end of the first positioning ring plate 262 is rotatably connected with a second positioning ring plate 263 through a pin shaft, the tail end of the second positioning ring plate 263 is clamped with the other end of the first positioning ring plate 262, and the upper end face of the second positioning ring plate 263 is fixedly connected with the lower end face of the second telescopic rod 26 on the right side; further reduce the frictional force between the board 261 is inhaled to magnetism through the smooth magnetism of up end board 261 to the electromagnetic plate 251 to reduce the wearing and tearing volume between the board 261 is inhaled to magnetism, cooperate with two 263 of positioning ring board through a positioning ring board 262, fix a position the lower extreme of two 26 telescopic links, fix a position the leg downside of hindering simultaneously.

Referring to fig. 1, the expansion plate 27 includes sliding blocks 271, sector blocks 272 and expandable rods 273, the sliding blocks 271 are uniformly connected to the second expansion rod 26 along the linearity thereof in a sliding fit manner, the sector blocks 272 are connected to the middle portions of the adjacent sliding blocks 271 in the same horizontal plane in a sliding fit manner, and the expandable rods 273 are fixedly mounted on the opposite end surfaces of the adjacent sliding blocks 271 in the same vertical plane; when the distance between the two telescopic rods 26 is changed by positioning the sector 272 through the sliding block 271 and connecting the sector 272 through the connecting spring 273, the length of the sector 272 extending out of the sliding block 271 is changed so as to prevent the sector 272 from interfering with the movement of the two telescopic rods 26.

Referring to fig. 1 and 5, the annular baffle 28 is of an annular telescopic structure, a sponge ring 281 is fixedly installed on the inner end surface of the second rubber air bag 29, and the head end and the tail end of the annular baffle 28 are connected in a clamping manner; because the diameter of the annular baffle 28 changes along with the fat and thin degree of the wounded, the annular baffle 28 is of an annular telescopic structure, the two rubber air bags 29 are respectively positioned at the upper side and the lower side of the wound and are tightly contacted with the wounded leg, so that a deformable quantity is given between the two rubber air bags 29 and the wounded leg through the sponge block, the wounded leg is prevented from being subjected to larger extrusion force, blood circulation is influenced, and wound recovery is finally influenced.

When the walking aid works, firstly, the first annular plate 21 is placed at the lower end of the leg of the patient, the joint of the first telescopic rod 25 and the second telescopic rod 26 is aligned with the knee of the patient, at the same time, the second annular plate 22 and the first annular plate 21 are tightly clamped, and the first rubber air bag 24 is inflated, so that the rubber air bag is tightly contacted with the thigh of the patient, if the lower leg of the patient has a wound, the annular baffles 28 at the upper side and the lower side are respectively moved to the upper side and the lower side of the wound, and the second rubber air bag 29 is inflated, so that the second rubber air bag 29 is tightly contacted with the upper side and the lower side of the wound, when the patient needs to walk, the patient stands up firstly, at the moment, the universal wheel 17 is contacted with a walking plane, when the surface of the walking plane is uneven, the damping spring 15 is used for reducing the bumping feeling generated by the fixing plate 11 in the rotating process of the universal wheel 17, and when the universal wheel 17 needs to be folded, the universal wheel 17 is driven by the electric telescopic rod 13 to move upwards to enter the arc-shaped groove 12.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.