CN112294606A

CN112294606A - Stepless adjustment underarm crutch for patient with injured wrist

Info

Publication number: CN112294606A
Application number: CN202010729702.9A
Authority: CN
Inventors: 朱正直
Original assignee: Hangzhou Yixin Technology Innovation Co Ltd
Current assignee: Hangzhou Yixin Technology Innovation Co Ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-02-02

Abstract

The invention discloses a stepless adjustment underarm crutch for a patient with a wrist injury, which comprises a support, a support rod arranged at the bottom end of the support and a support pad arranged at the top end of the support, wherein a holding rod is rotatably arranged at the middle position of the support, a forearm accommodating mechanism is rotatably arranged at the top in the support, and the forearm accommodating mechanism is used for accommodating the forearm of the patient; an adjusting mechanism is arranged between the forearm containing mechanism and the top end of the bracket, and the inclination angle of the forearm containing mechanism can be adjusted in a stepless manner through the adjusting mechanism; the forearm accommodating mechanism comprises a barrel body used for accommodating the forearm of a patient, a support ring body is arranged on the periphery of the barrel body, the support ring body is rotatably arranged in the support through a rotating shaft, and an elbow supporting mechanism is arranged at the rear end of the barrel body. The walking stick is convenient for a patient to control, and the adaptability of the walking stick is improved; is suitable for patients with postoperative asthenia; the gear and the rack can realize stepless regulation and are convenient to use.

Description

Stepless adjustment underarm crutch for patient with injured wrist

Technical Field

The invention relates to the technical field of walking sticks, in particular to an infinitely adjustable underarm walking stick for a patient with a wrist injury.

Background

China has a relatively large population base, and China gradually enters an aging society in recent years. For some elderly with slow mobility or people with leg diseases and inconvenient mobility, the crutch is often used as an auxiliary supporting tool to support the leg during walking to assist the user to keep the body balance, so that the crutch has a wide application base in the elderly with slow mobility or people with leg diseases and inconvenient mobility.

The walking stick that often sees on the market at present is stick-shaped structure that wooden or metal material made mostly, in addition, has general application in the walking stick for the traditional chinese medical science in hospital, and the support patient that medical walking stick can stabilize possesses higher use value.

However, the medical crutch in the hospital at present has the following disadvantages:

1. when the wrist of a patient is injured and cannot exert force, the medical crutch cannot be used and cannot be driven to walk together, so that the adaptability of the crutch is poor.

2. Partial patients are weak after operation, the crutch is lifted in a manner of holding the rod by hands (the forearm and the rear arm are straightened), the shoulder muscle group is required to exert force, and the shoulder muscle group (compared with the pectoral muscle, the dorsal muscle and other large muscle groups) of a common person is small in strength, so that in the lifting process of the crutch, the crutch is difficult to be effectively controlled in a manner of lifting the wrist with the shoulder force.

3. The wrist grips the holding rod, the holding rod is used as the force application end of the arm, and the distance between the force application end and the movable end (shoulder position) is longer, so that the force arm is increased when the force application point has insufficient muscle action force, and the difficulty of gripping the crutch by the wrist is increased.

4. In order to solve the problems, the force application problem when the crutch is used is solved by inserting the forearm into the cylinder, but a new technical problem is introduced, namely the forearm is used to drive the whole crutch to move, so that the crutch is inconvenient to control.

Disclosure of Invention

The invention aims to provide a stepless adjustment underarm crutch for a patient with a wrist injury, wherein when the crutch is used by the patient with the wrist injury, a forearm is inserted into a cylinder body, an elbow is supported on an elbow supporting mechanism, the forearm exerts force, the whole crutch is driven to move by the forearm through the cylinder body, but the crutch is convenient to control.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: a stepless adjustment oxter crutch for a patient with an injured wrist comprises a support, a support rod arranged at the bottom end of the support and a support pad arranged at the top end of the support, wherein a holding rod is rotatably arranged at the middle position of the support, a forearm accommodating mechanism is rotatably arranged at the top in the support, and the forearm accommodating mechanism is used for accommodating the forearm of the patient;

an adjusting mechanism is arranged between the forearm containing mechanism and the top end of the bracket, and the inclination angle of the forearm containing mechanism can be adjusted steplessly through the adjusting mechanism;

the forearm accommodating mechanism comprises a barrel for accommodating the forearm of a patient, a support ring profile is arranged on the periphery of the barrel and is rotatably arranged in the support through a rotating shaft, and an elbow supporting mechanism is arranged at the rear end of the barrel;

the adjusting mechanism comprises a rack, a gear and a positioning mechanism, the gear rotates to drive the rack to move up and down, and then the inclination angle of the barrel is adjusted in a stepless mode.

Preferably, elbow supporting mechanism is including the fixed sliding sleeve that sets up in the barrel bottom, it is equipped with the backup pad to slide in the sliding sleeve, be equipped with the retaining member between backup pad and the sliding sleeve, the both ends of backup pad all are equipped with spacing piece.

Preferably, the front end of the barrel body is provided with an air hole.

Preferably, the support is provided with a mounting groove, the gear is rotatably mounted in the mounting groove, a guide frame for guiding the rack to move up and down is arranged on the inner side of the support, and a stop block is arranged at the top end of the rack.

Preferably, the barrel both sides all are equipped with the fixed block, it is equipped with the connecting plate to rotate through the round pin axle on the fixed block, two be equipped with the connecting axle between the connecting plate other end, the rack bottom is equipped with the tongue of inserting, the slot has been seted up on the connecting plate top, the tongue of inserting passes through the connecting axle and rotates the setting in the slot.

Preferably, positioning mechanism includes locating lever and constant head tank, gear one end is equipped with the telescope tube, the outer end of telescope tube is equipped with the knob, the inboard at the knob is fixed to the locating lever, the constant head tank is seted up on the support, when the locating lever inserted in the constant head tank, can pass through knob, telescope tube location gear.

Preferably, the cross section of the supporting plate adopts an arc structure, and the size of the limiting piece is larger than the inner diameter of the sliding sleeve.

Preferably, the barrel adopts a conical shell structure, and one end of the barrel close to the elbow is larger than the other end of the barrel.

Preferably, the number of the guide frames is two, and the two guide frames are symmetrically distributed about the height center line of the installation groove.

Preferably, the top end of the support is provided with a locking hole, and the locking hole can be locked on a locking mechanism in the wall body so as to realize walking stick sharing.

Preferably, a lifting mechanism is arranged between the holding rod and the support and comprises an inner folded plate, an outer folded plate and an outer folded frame, the inner folded plate is connected with the inner side of the support in an overturning manner, one end of the outer folded frame is connected with the inner side of the support in an overturning manner, the other end of the outer folded frame is fixed with the holding rod, one end of the outer folded plate is connected with the inner folded plate, and the other end of the outer folded plate is connected with the outer folded frame in a rotating manner.

Preferably, a butt joint structure is further arranged between the outer folded plate and the inner folded plate, the butt joint structure comprises an arc-shaped groove, a positioning groove and a limiting block, the arc-shaped groove is located on a moving path of the limiting block, and the positioning groove is located in the middle of the arc-shaped groove; the stopper is the hemisphere arch, and the arc wall is semicircular groove, the internal diameter of arc wall slightly is less than the radius of stopper, and constant head tank radius equals with the stopper radius.

Compared with the prior art, the electrodeless adjustable underarm crutch for the patient with the injured wrist has the following beneficial effects:

one, when patient's wrist is injured, adjust forearm receiving mechanism through adjustment mechanism to rotatory forearm receiving mechanism is to the horizontality, insert the forearm receiving mechanism in to the forearm, then locking adjustment mechanism is in order to fix forearm receiving mechanism, and the patient can drive the walking stick walking through the forearm, and the patient of being convenient for controls the walking stick, has improved the walking stick and has used the flexibility, does not have injured user to the wrist, packs up forearm receiving mechanism through adjustment mechanism, convenient to use.

The crutch is suitable for a patient with a wrist injury, and when the crutch is used, the forearm of the patient is lifted upwards, the forearm bends (the included angle between the forearm and the rear arm tends to be vertical) and is lifted upwards, and the muscle group with force of the lifting action mainly takes the pectoral muscle to assist the shoulder-arm muscle group. Therefore, the lifting force is stronger when the patient lifts the bed, the patient can use the bed more easily, and the bed is suitable for the patient with postoperative weakness.

And thirdly, when the holding posture of the crutch is changed, the force application end moves backwards from the wrist to the elbow position, the force arm is shortened after the muscle group exerting force is improved, so that the lifting and controlling of the crutch are easier to control, and the crutch is prevented from slipping.

And fourthly, the gear is driven to rotate through the rotary knob, the gear drives the rack to move up and down in the guide frame, the bottom end of the rack pulls the rear end of the barrel to rotate around the rotating shaft through the connecting plate so as to change the inclination angle of the barrel, stepless adjustment can be realized on the gear and the rack, the use is convenient, and finally the gear is positioned through the positioning mechanism.

And fifthly, the position of the holding rod is moved to the extension position of the forearm accommodating mechanism, so that the crutch can be better controlled and is not easy to separate from the body.

Drawings

FIG. 1 is a perspective view of an infinitely adjustable underarm crutch for a patient with a wrist injury;

FIG. 2 is a front view of embodiment 1.

FIG. 3 is a side view of example 1.

Fig. 4 is a perspective view of the forearm receiving mechanism and the adjustment mechanism in embodiment 1.

Fig. 5 is a perspective view (another angle of view) of the forearm receiving mechanism and the adjustment mechanism in embodiment 1.

Fig. 6 is a plan view of the forearm receiving mechanism and the adjustment mechanism in embodiment 1.

Fig. 7 is a side view of the forearm receiving mechanism and the adjustment mechanism in example 1.

Fig. 8 is a perspective view of an adjustment mechanism in embodiment 1.

Fig. 9 is a perspective view of the positioning mechanism in embodiment 1.

Fig. 10 is a side view of the infinitely adjustable underarm crutch for a patient with a wrist injury according to example 1 (with the forearm receiving mechanism retracted).

FIG. 11 is a side view of the mechanism for lifting the underarm crutch according to example 2.

Fig. 12 is a schematic structural view of the lifting mechanism in embodiment 2.

Fig. 13 is a schematic structural view of a docking structure in embodiment 2.

Fig. 14 is a schematic structural view of the outer flaps in embodiment 2.

Fig. 15 is a schematic structural view of the extended state of the lifting mechanism in embodiment 2.

Fig. 16 is a schematic structural view of a closed state of the lifting mechanism in embodiment 2.

Reference numerals: the support comprises a support 1, a support rod 2, a holding rod 3, a support pad 4, a forearm containing mechanism 5, a rotating shaft 51, a support ring body 52, a cylinder body 53, an air vent 531, a fixing block 532, a connecting plate 54, a slot 541, a plug tongue 542, a connecting shaft 55, a sliding sleeve 561, a support plate 562, an adjusting mechanism 6, a rack 61, a mounting groove 62, a gear 63, a guide frame 64, a stop block 65, a positioning mechanism 66, a telescopic sleeve 661, a knob 662, a positioning groove 663, a positioning rod 664 and a locking hole 7.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Example 1:

the infinitely adjustable underarm crutch for the wrist-injured patient as shown in fig. 1-3 and 10 comprises a support 1, a support rod 2 arranged at the bottom end of the support 1 and a support pad 4 arranged at the top end of the support 1, wherein a holding rod 3 is rotatably arranged at the middle position of the support 1, a locking hole 7 is formed at the top end of the support 1, and the locking hole 7 can be locked on a locking mechanism in a wall body so as to realize crutch sharing; during the use, hold in the palm pad 4 centre gripping in the armpit, hold holding rod 3 with the hand, make the bottom of vaulting pole 2 land, vaulting pole 2 passes through support 1, support pad 4 auxiliary stay patient, in addition, can also wrap up one deck foam-rubber cushion in the periphery of holding rod 3 to improve user experience, support pad 4 adopts the elastic material preparation, avoids putting the armpit of patient, and at last, can lock the walking stick on the locking mechanism in the wall body through locking hole 7, in order to realize the walking stick sharing, convenient to use.

As shown in fig. 1-3, a forearm accommodating mechanism 5 is rotatably arranged at the top in the support 1, the forearm accommodating mechanism 5 is used for accommodating the forearm of a patient, an adjusting mechanism 6 is arranged between the forearm accommodating mechanism 5 and the top end of the support 1, and the inclination angle of the forearm accommodating mechanism 5 can be steplessly adjusted through the adjusting mechanism 6; when the wrist of the patient is injured, the forearm containing mechanism 5 is adjusted to the horizontal state through the adjusting mechanism 6, the forearm is inserted into the forearm containing mechanism 5, the force is exerted on the forearm, the crutch can be driven through the forearm containing mechanism 5, the crutch is convenient to control, and the crutch is prevented from being separated from the patient. If the wrist of the patient is not injured, the forearm receiving mechanism 5 can be retracted by the adjustment mechanism 6 and the grip 3 can be grasped by hand, as shown in fig. 10.

As shown in fig. 4-8, the adjusting mechanism 6 includes a rack 61, a gear 63 and a positioning mechanism 66, the gear 63 rotates to drive the rack 61 to move up and down, so as to adjust the inclination angle of the cylinder 53 steplessly, the bracket 1 is provided with an installation groove 62, the gear 63 is rotatably installed in the installation groove 62, the inner side of the bracket 1 is provided with two guide frames 64 for guiding the rack 61 to move up and down, the two guide frames 64 are symmetrically distributed about the height center line of the installation groove 62, and the top end of the rack 61 is provided with a stop 65; the positioning mechanism 66 is held by a hand and applies a rotating force, the positioning mechanism 66 drives the gear 63 to rotate in the mounting groove 62, the rack 61 is driven to move up and down in the guide frame 64 under the meshing effect of the gear 63 and the rack 61, the inclination angle of the stepless adjusting cylinder 53 is realized, the use is convenient, in addition, the rack 61 can be limited when the rack 61 is guided by the guide frame 64 to move up and down, the rack 61 is prevented from shaking left and right, good meshing between the rack 61 and the gear 63 is ensured, the stable transmission of power is facilitated, the stop block 65 can limit the top end of the rack 61, the rack 61 is prevented from completely separating from the guide frame 64, and the stable.

As shown in fig. 4-7, the forearm receiving mechanism 5 comprises a barrel 53 for receiving the forearm of the patient, a support ring profile 52 is arranged on the periphery of the barrel 53, the support ring profile 52 is rotatably arranged in the support 1 through a rotating shaft 51, an air hole 531 is arranged at the front end of the barrel 53, the barrel 53 is of a conical shell structure, and one end of the barrel 53 close to the elbow is larger than the other end; the patient can insert the forearm in barrel 53, support ring type 52 is used for fixing barrel 53, pivot 51 does benefit to the rotation of barrel 53, do benefit to the inclination of adjusting barrel 53, in addition, bleeder vent 531 does benefit to the flow of air, avoid the air gathering to produce the peculiar smell in barrel 53, wherein, bleeder vent 531 evenly distributed, can adopt circularly, square or other shapes, and finally, barrel 53 adopts the design of toper shell structure, adapt to the whole shape of patient's forearm, ensure that barrel 53 inner wall is hugged closely everywhere with the patient's forearm, avoid taking off, do benefit to and control the walking stick.

The rear end of the barrel 53 is provided with an elbow supporting mechanism, the elbow supporting mechanism comprises a sliding sleeve 561 fixedly arranged at the bottom end of the barrel 53, a supporting plate 562 is arranged in the sliding sleeve 561 in a sliding manner, a locking part is arranged between the supporting plate 562 and the sliding sleeve 561, two ends of the supporting plate 562 are provided with limiting pieces, the cross section of the supporting plate 562 adopts an arc structure, and the size of each limiting piece is larger than the inner diameter of the sliding sleeve 561; during the use, the patient can also support the elbow on elbow supporting mechanism, in order to increase the dynamics of controlling, it is concrete, stimulate earlier backup pad 562 to make backup pad 562 follow the inside outside roll-off of sliding sleeve 561, through retaining member locking sliding sleeve 561 and backup pad 562, the elbow support in backup pad 562 can, wherein, the retaining member can adopt locking screw, bolt or fixture block, in addition, spacing piece is used for spacing backup pad 562, avoid backup pad 562 to break away from sliding sleeve 561, when not using backup pad 562, it can to make it enter into sliding sleeve 561 internal contraction to promote backup pad 562, finally, can also adhere one deck foam-rubber cushion on backup pad 562 top surface, avoid putting and hinder patient's elbow.

Fixing blocks 532 are arranged on two sides of the cylinder 53, connecting plates 54 are rotatably arranged on the fixing blocks 532 through pin shafts, a connecting shaft 55 is arranged between the other ends of the two connecting plates 54, a plug tongue 542 is arranged at the bottom end of the rack 61, a slot 541 is formed in the top end of the connecting plate 54, and the plug tongue 542 is rotatably arranged in the slot 541 through the connecting shaft 55; the bottom ends of the connecting plates 54 can rotate around the fixing block 532, so that the inclination angle of the cylinder 53 can be adjusted conveniently, the bottom ends of the racks 61 are matched with the insertion tongue 542, the insertion groove 541 and the connecting shaft 55 to realize power transmission, in addition, the connecting shaft 55 also connects the other ends of the two connecting plates 54 to ensure that the two connecting plates 54 can bear lifting force, the two sides of the cylinder 1 are ensured to be stressed the same, and the cylinder 1 is prevented from being turned on one side due to uneven stress.

As shown in fig. 9, the positioning mechanism 66 includes a positioning rod 664 and a positioning groove 663, one end of the gear 63 is provided with a telescopic tube 661, an outer end of the telescopic tube 661 is provided with a knob 662, the positioning rod 664 is fixed at an inner side of the knob 662, the positioning groove 663 is arranged on the bracket 1, and when the positioning rod 664 is inserted into the positioning groove 663, the gear 63 can be positioned through the knob 662 and the telescopic tube 661; after barrel 1 is adjusted required inclination, inwards promote knob 662 with the hand, telescope tube 661 is compressed simultaneously, knob 662 drives locating lever 664 and removes towards constant head tank 663, after pending pole 664 inserts in constant head tank 663, can fix a position knob 662 and no longer rotate, and then positioning gear 63, rack 61 and barrel 1, when the inclination of adjustment barrel 1 is required again, hold knob 662 and apply outside pulling force with the hand, telescope tube 661 is elongated simultaneously, after waiting knob 662 to drive locating lever 664 and break away from constant head tank 663, can rotate knob 662, knob 662 drives gear 63 and rotates, and then drive rack 61 and reciprocate, with the inclination of adjustment barrel 1, finally, the outside of knob 662 is equipped with the handle, be convenient for patient's gripping knob 662 in order to apply the revolving force.

Example 2:

referring to fig. 11, this embodiment is modified at the grip bar 3 compared to embodiment 1.

In this embodiment, as shown in fig. 12, a lifting mechanism 8 is disposed between the holding rod 3 and the support 1, the lifting mechanism 8 includes an inner folded plate 81, an outer folded plate 82 and an outer folded frame 83, the inner folded plate 81 is connected to the inner side of the support 1 in an inverted manner, one end of the outer folded frame 83 is connected to the inner side of the support 1 in an inverted manner, the other end of the outer folded frame 83 is fixed to the holding rod 3, one end of the outer folded plate 82 is connected to the inner folded plate 81, and the other end of the outer folded plate 82 is connected to the outer folded frame 83 in a rotatable.

Through the lifting mechanism 8, after the forearm accommodating mechanism 5 of the underarm crutch is folded, a small included angle exists between the forearm accommodating mechanism 5 and the support 1, the holding rod 3 is folded outwards through the lifting mechanism at the moment, the holding rod 3 is just positioned in front of the forearm accommodating mechanism 5, and at the moment, as long as a hand is inserted from the forearm accommodating mechanism 5, the palm fist can be used for firmly holding the holding rod 3, and the whole crutch is lifted upwards, see fig. 11.

Still be equipped with butt joint structure between outer folded plate 82 and the interior folded plate 81, butt joint structure mainly used keeps interior folded plate 81 and outer folded plate 82 in coaxial state, as shown in fig. 13, butt joint structure includes arc groove 811, constant head tank 812 and stopper 821, arc groove 811 is located stopper 821's removal route, constant head tank 812 is located arc groove 811 middle part, arc groove 811 provides the removal route for stopper 821, after stopper 821 reachs constant head tank 812, stopper 821 enters into constant head tank 812 from arc groove 811, only through great application of force, just can deviate from constant head tank 812 with stopper 821.

The stopper 821 is the hemisphere protruding, the arc groove 811 cross-section semicircular groove, the inslot diameter is less than the stopper 821 radius slightly, constant head tank 812 radius equals with stopper 821 radius, the design can make the stopper 821 comparatively smooth when moving on arc groove 811 like this, and when stopper 821 enters into constant head tank 812, form great resistance between stopper 821 and the constant head tank 812, it is great to make the stopper 821 deviate from the required power of constant head tank 812, can avoid lifting the mechanism when using, the unexpected draw in of holding rod 3.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims

1. The utility model provides a wrist is injured patient with electrodeless regulation armpit walking stick, includes support (1), sets up vaulting pole (2) and the support pad (4) of setting on support (1) top in support (1) bottom, support (1) intermediate position department rotates and is equipped with holding rod (3), its characterized in that: a forearm accommodating mechanism (5) is rotatably arranged at the top in the support (1), and the forearm accommodating mechanism (5) is used for accommodating the forearm of a patient;

an adjusting mechanism (6) is arranged between the forearm accommodating mechanism (5) and the top end of the support (1), and the inclination angle of the forearm accommodating mechanism (5) can be steplessly adjusted through the adjusting mechanism (6);

the forearm accommodating mechanism (5) comprises a barrel (53) for accommodating the forearm of a patient, a support ring molded body (52) is arranged on the periphery of the barrel (53), the support ring molded body (52) is rotatably arranged in the support (1) through a rotating shaft (51), and an elbow supporting mechanism is arranged at the rear end of the barrel (53);

the adjusting mechanism (6) comprises a rack (61), a gear (63) and a positioning mechanism (66), wherein the gear (63) rotates to drive the rack (61) to move up and down, so that the inclination angle of the cylinder body (53) is adjusted steplessly.

2. The infinitely adjustable underarm crutch for a patient with a wrist injury according to claim 1, further comprising: the elbow supporting mechanism comprises a sliding sleeve (561) fixedly arranged at the bottom end of the barrel body (53), a supporting plate (562) is arranged in the sliding sleeve (561) in a sliding mode, a locking part is arranged between the supporting plate (562) and the sliding sleeve (561), and limiting pieces are arranged at two ends of the supporting plate (562).

3. The infinitely adjustable underarm crutch for a patient with a wrist injury according to claim 1, further comprising: the support is characterized in that a mounting groove (62) is formed in the support (1), the gear (63) is rotatably mounted in the mounting groove (62), a guide frame (64) used for guiding the rack (61) to move up and down is arranged on the inner side of the support (1), and a stop block (65) is arranged at the top end of the rack (61).

4. The stepless adjustable underarm crutch for the patient with the injured wrist as claimed in claim 1 or 3, which is characterized in that: barrel (53) both sides all are equipped with fixed block (532), it is equipped with connecting plate (54) to rotate through the round pin axle on fixed block (532), two be equipped with connecting axle (55) between connecting plate (54) the other end, rack (61) bottom is equipped with inserts tongue (542), slot (541) have been seted up on connecting plate (54) top, insert tongue (542) rotate through connecting axle (55) and set up in slot (541).

5. The infinitely adjustable underarm crutch for a patient with a wrist injury according to claim 1, further comprising: positioning mechanism (66) are including locating lever (664) and constant head tank (663), gear (63) one end is equipped with telescopic tube (661), telescopic tube (661)'s outer end is equipped with knob (662), locating lever (664) are fixed in the inboard of knob (662), set up on support (1) constant head tank (663), when locating lever (664) inserted constant head tank (663) in, can pass through knob (662), telescopic tube (661) location gear (63).

6. The infinitely adjustable underarm crutch for a patient with a wrist injury according to claim 2, further comprising: the cross section of the supporting plate (562) adopts an arc-shaped structure, and the size of the limiting sheet is larger than the inner diameter of the sliding sleeve (561).

7. The infinitely adjustable underarm crutch for a patient with an injured wrist as defined in any one of claims 1 to 6, wherein: the top end of the support (1) is provided with a locking hole (7), and the locking hole (7) can be locked on a locking mechanism in a wall body so as to realize walking stick sharing.

8. The infinitely adjustable underarm crutch for a patient with a wrist injury according to claim 1, further comprising: a lifting mechanism (8) is arranged between the holding rod (3) and the support (1), the lifting mechanism (8) comprises an inner folded plate (81), an outer folded plate (82) and an outer folded frame (83), the inner folded plate (81) is connected with the inner side of the support (1) in an overturning manner, one end of the outer folded frame (83) is connected with the inner side of the support (1) in an overturning manner, the other end of the outer folded frame (83) is fixed with the holding rod (3), one end of the outer folded plate (82) is connected with the inner folded plate (81), and the other end of the outer folded plate (82) is connected with the outer folded frame (83) in a rotating manner.

9. The infinitely adjustable underarm crutch for a patient with a wrist injury according to claim 8, wherein: a butt joint structure is further arranged between the outer folded plate (82) and the inner folded plate (81), the butt joint structure comprises an arc-shaped groove (811), a positioning groove (812) and a limiting block (821), the arc-shaped groove (811) is located on a moving path of the limiting block (821), and the positioning groove (812) is located in the middle of the arc-shaped groove (811); the limiting block (821) is a hemispherical protrusion, the arc-shaped groove (811) is a semicircular groove, the inner diameter of the arc-shaped groove (811) is slightly smaller than the radius of the limiting block (821), and the radius of the positioning groove (812) is equal to that of the limiting block (821).