Multifunctional leg fixing equipment

Abstract

The invention relates to the technical field of medical instruments and equipment, and discloses multifunctional leg fixing equipment which comprises a shank sleeve used for sleeving and positioning a shank of a human body; the thigh sleeve is used for sleeving and positioning the thigh position of the human body; the shank sleeve is connected with the thigh sleeve through the connecting frame; the fixing device is used for flexibly positioning the leg position; and a limiting device. According to the multifunctional leg fixing equipment, the legs of a patient can be gently fixed through the arranged special fixing device, the overall principle is similar to an air pressure fixing mode, the legs of the patient are fixed by means of the air pressure bandage principle of measuring blood pressure, and compared with traditional support type fixing, the fixing mode is softer, and the fixing effect is better. Moreover, the overall fixing effect is not weaker than that of a bracket fixing mode, and the leg area of the patient can be effectively subjected to air pressure type fixing by integrally utilizing wearable fixing, so that the comfort degree of the patient is improved, and the pain feeling is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a multifunctional leg fixing device. Background Art

[0002] When examining or treating patients with leg bone injuries in clinical orthopedics, it is usually necessary to use a leg fixation device to fix the patient's legs so that the patient's legs maintain a certain position. However, the existing leg fixation device has a simple structure and can only perform simple fixation on the legs.

[0003] However, some current leg fixation devices are extremely simple when performing fixation, and the fixation method is too single. Many of them are fixed by plaster, or the legs are positioned by a skeleton. This type of fixation has a greater stimulation on the patient's leg position. When the patient is gradually recovering, it must be accompanied by slight movements of the legs. At this time, the legs are directly restricted and fixed, which greatly speeds up the recovery process. In addition, the existing fixation structures are all fixed in a sealed state. The recovery and healing of a leg requires internal ventilation and sunlight to improve the recovery time of the leg. Waiting for its own closed healing takes too long, so a multifunctional leg fixation device is proposed to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a multifunctional leg fixation device, which solves the problem that when fixing patients with leg injuries in the prior art, the fixation methods are too single and basically all are rigid fixations, which are highly irritating to the patient's body, and many fixation methods use closed fixations, which will have a certain degree of impact on the patient's recovery.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional leg fixation device, including a calf sleeve for fitting and positioning the calf of a human body; a thigh sleeve for fitting and positioning the thigh position of a human body; the calf sleeve is connected to the thigh sleeve through a connecting frame; a fixing device for flexibly positioning the leg position; a limiting device for angularly limiting the calf position and thigh position of a human body; the fixing device includes an air intake device and an expansion rubber sleeve, the air intake device intakes air to inflate the expansion rubber sleeve and finally fixes the human body's leg in an air cushion manner.

[0008] Preferably, the inflation device includes a rubber ball, to which is connected an exhaust pipe, and an air intake pipe, one end of which is connected to an expansion rubber sleeve via a connecting pipe, a frame is provided inside the expansion rubber sleeve, and the frame is fixed inside the calf sleeve.

[0009] Preferably, a one-way valve is provided inside the air inlet pipe and the air exhaust pipe. Pressing the rubber ball will control the internal gas to be squeezed and injected into the inside of the expansion rubber sleeve, so that the calf is fixed after it expands. The expansion rubber sleeve is provided with two groups, and the two groups of expansion rubber sleeves are arranged up and down, and the two groups of expansion rubber sleeves are connected by a pipeline.

[0010] Preferably, the interior of the calf sleeve has a double-layer structure, and a sliding rod is fixedly connected to the inner wall of the calf sleeve, a push-pull spring is sleeved on the surface of the sliding rod, a closing cone is slidably connected to the surface of the sliding rod, a push push is connected to one end of the closing cone, and an air outlet pipe is connected to the expansion rubber sleeve, and the closing cone abuts against the pipe mouth of the air outlet pipe.

[0011] Preferably, the calf sleeve is provided with a plurality of long grooves, a closed frame is provided in the double-layer space of the calf sleeve, a rotating ring is fixedly connected to the closed frame, a push hook is connected to the rotating ring, the rotating ring is rotatably connected to the calf sleeve, a magnetic plate is fixedly connected to the inside of the calf sleeve, and the closed frame is fixed to the magnetic plate by magnetic attraction.

[0012] Preferably, the limiting device includes a ring, the ring is fixed on the intake pipe, a pointer plate is fixedly connected to the ring, scale lines are provided on the connecting frame, a plurality of positioning holes are provided on the ring, a push plate is slidably connected to the connecting frame, and the push plate is fixedly connected to a pin that cooperates with the positioning hole through a connecting piece.

[0013] Preferably, the limiting device also includes a movable restraint device, which includes ring body one and ring body two, and the ring body one and ring body two are both rotatably connected to the air intake pipe. The ring body one and ring body two are both connected to a limiting frame, and the limiting frame is slidably connected to a semi-lunar groove opened inside the connecting frame.

[0014] Preferably, the calf sleeve is slidably connected with a resistance frame, the resistance frame is connected with an inclined plate, the inclined plate is threadedly connected with an adjustment rod, the bottom of the adjustment rod is rotatably connected to the calf sleeve, and one side of the inclined plate abuts against the second ring body.

[0015] Preferably, the ring body one and the ring body two are both connected with a driving rod, a reset spring is arranged inside the connecting frame, one end of the reset spring is in contact with the ring body one, a plurality of slots are provided on the connecting frame, and the side surfaces of the limit frames connected to the ring bodies one and two are fixedly connected with keys.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a multifunctional leg fixing device, which has the following beneficial effects:

[0018] 1. This multifunctional leg fixation device can achieve gentle fixation of the patient's legs through the special fixing device. The overall principle is similar to the pneumatic fixation method. It borrows the pneumatic bandage principle of "blood pressure measurement" to fix the patient's legs. This fixation method is softer than the traditional bracket fixation, and the overall fixing effect is not inferior to the bracket fixation method. The overall wearable fixation can effectively fix the patient's leg area with pneumatic pressure, improve the patient's comfort and reduce pain.

[0019] 2. The multifunctional leg fixation device can achieve ventilation when the legs are fixed by means of the long grooves, and can achieve the dual adjustment effects of sealing and ventilation, thereby improving the applicability of the fixation device and improving the patient's leg recovery efficiency, and can achieve the dual adjustment effects of ventilation or closure according to different symptoms.

[0020] 3. The multifunctional leg fixation device can fix the leg angle between the patient's calf and thigh through the setting of the limiting device, so as to avoid the patient's leg angle changes when walking with crutches, resulting in dislocation of the diseased part.

[0021] 4. The multifunctional leg fixation device can limit the movable angles of the calf sleeve and the thigh sleeve through the movable restraint device, so that they can only move within the adjustable angle range, thereby realizing the restraint limit on the patient's legs after recovery, and can provide the patient with a certain angle of rehabilitation movement, facilitating the patient to perform rehabilitation exercises. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a multifunctional leg fixing device proposed by the present invention;

[0023] Figure 2 A schematic diagram of the structure of a fixing device of a multifunctional leg fixing device proposed by the present invention;

[0024] Figure 3 A schematic diagram of the structure of an air intake device of a multifunctional leg fixing device proposed by the present invention;

[0025] Figure 4 A schematic cross-sectional structure diagram of a calf sleeve of a multifunctional leg fixation device proposed by the present invention;

[0026] Figure 5A schematic diagram of the structure of a limiting device of a multifunctional leg fixing device proposed by the present invention;

[0027] Figure 6 A schematic diagram of the structure of an active restraint device of a multifunctional leg fixing device proposed by the present invention;

[0028] Figure 7 A schematic structural diagram of a ring body 1 and a ring body 2 of a multifunctional leg fixing device proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the connecting frame structure of a multifunctional leg fixing device proposed by the present invention.

[0030] In the figure: 1, calf sleeve; 2, thigh sleeve; 3, connecting frame; 31, slot; 4, fixing device; 401, rubber ball; 402, exhaust pipe; 403, air intake pipe; 404, connecting pipe; 405, expansion rubber sleeve; 406, skeleton; 407, rotating ring; 408, push push; 409, closing cone; 410, sliding rod; 411, push-pull spring; 412, long groove; 413, closing frame; 414, push hook; 41 5. Magnetic plate; 5. Limiting device; 501. Ring; 502. Pointer plate; 503. Positioning hole; 504. Push plate; 505. Pin; 506. Movable restraining device; 5061. Ring body one; 5062. Ring body two; 5063. Limiting frame; 5064. Insert key; 5065. Adjusting rod; 5066. Resistance frame; 5067. Inclined plate; 5068. Driving rod; 5069. Return spring; 5070. Semi-lunar groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 8A multifunctional leg fixation device includes a calf sleeve 1 for fitting and positioning the calf of a human body; a thigh sleeve 2 for fitting and positioning the thigh of a human body; the calf sleeve 1 is connected to the thigh sleeve 2 through a connecting frame 3; a fixing device 4 for flexibly positioning the leg position; a limiting device 5 for limiting the angle of the calf position and thigh position of the human body; the fixing device 4 includes an air intake device and an expansion rubber sleeve 405, and the air intake device inflates the expansion rubber sleeve 405 to finally fix the leg of the human body in an air cushion manner. The thigh sleeve 2 can be set with a structural form corresponding to the calf sleeve 1, or it can be fixed with a strap, or it can be carried on the patient's shoulder by passing a rope through the hole on the thigh sleeve 2. As long as the patient's thigh can be fixed, the fixing method of the thigh sleeve 2 is not limited in this embodiment, and it only needs to be able to tighten the patient's thigh.

[0033] It is worth noting that the inflatable device includes a rubber ball 401, which is connected to an air extraction pipe 402, and an air intake pipe 403, one end of which is connected to an expansion rubber sleeve 405 through a connecting pipe 404, and a skeleton 406 is provided inside the expansion rubber sleeve 405, and the skeleton 406 is fixed inside the calf sleeve 1. By manually pressing the rubber ball 401 continuously, the gas in the rubber ball 401 will enter the inside of the connecting pipe 404 through the air intake pipe 403, and then be injected into the expansion rubber sleeve 405. The expansion rubber sleeve 405 will be continuously expanded by the injection of air pressure until it is in compression contact with the patient's leg, and two upper and lower expansion rubber sleeves 405 are provided to perform double compression and fixation on the leg, and the overall fixation by air pressure expansion is gentler on the patient's stimulation, and the overall fit to the patient's skin is more stable.

[0034] In this embodiment, a one-way valve is provided inside the air inlet pipe 403 and the air extraction pipe 402. Pressing the rubber ball 401 will control the internal gas to be squeezed and injected into the inside of the expansion rubber sleeve 405, so that it can be expanded to fix the calf. There are two groups of expansion rubber sleeves 405, and the two groups of expansion rubber sleeves 405 are arranged up and down, and the two groups of expansion rubber sleeves 405 are connected through a pipeline. Through the one-way valve, air can enter from the air inlet pipe 403 when the rubber ball 401 is pressed. After that, as the elastic force of the rubber ball 401 is restored, the one-way valve will be used to use the air extraction pipe 402 to extract air from the outside into the inside of the rubber ball 401 to cause inflation. With continuous circulation, air will be gradually injected from the outside into the inside of the expansion rubber sleeve 405, realizing manually controlled air pressure enhanced fixation.

[0035] Furthermore, the interior of the calf sleeve 1 is a double-layer structure, and a sliding rod 410 is fixedly connected to the inner wall of the calf sleeve 1, and a push-pull spring 411 is sleeved on the surface of the sliding rod 410. A closed cone 409 is slidably connected to the surface of the sliding rod 410, and a push pin 408 is connected to one end of the closed cone 409. The expansion rubber sleeve 405 is connected to an air outlet pipe, and the closed cone 409 abuts against the pipe mouth of the air outlet pipe. When the interior needs to be deflated, the push pin 408 needs to be pressed to control the closed cone 409 to go deeper from the position of the air outlet pipe, and then the air flow will be discharged from the end of the air outlet pipe. The whole principle utilizes the process of "inflating a tire". Inflating will expand, and the expansion will fix the leg, and deflation only requires pressing the "valve core" to deflate the interior.

[0036] Furthermore, a plurality of long grooves 412 are provided on the calf sleeve 1, and a closed frame 413 is provided in the double-layer space of the calf sleeve 1, to which a rotating ring 407 is fixedly connected, and a push hook 414 is connected to the rotating ring 407, the rotating ring 407 is rotatably connected to the calf sleeve 1, and a magnetic plate 415 is fixedly connected inside the calf sleeve 1, and the closed frame 413 and the magnetic plate 415 are fixed by magnetic attraction. If it is necessary to control the breathability of the calf sleeve 1, the user needs to turn the rotating ring 407 connected to the push hook 414 to rotate a small angle so that one of the closed frames 413 is magnetically fixed to the magnetic plate 415, and multiple closed frames 413 are misaligned with the long groove 412. After that, the calf sleeve 1 will be in a breathable state, and the patient's legs will be in a breathable state at the same time, except for the position where the expansion rubber sleeve 405 is fitted. The patient can perform light recovery based on the legs in the breathable state to avoid long-term closure and the reverse recovery effect of stuffiness and airtightness in the calf area.

[0037] In addition, the limiting device 5 includes a ring 501, which is fixed on the intake pipe 403, a pointer plate 502 is fixedly connected to the ring 501, scale lines are provided on the connecting frame 3, a plurality of positioning holes 503 are provided on the ring 501, a push plate 504 is slidably connected to the connecting frame 3, and the push plate 504 is fixedly connected to a pin 505 that cooperates with the positioning hole 503 through a connecting piece. Because the angles of the calf and thigh need to be fixed after some patients have leg injuries, the medical staff can adjust the angles of the calf and thigh according to the patient's required angle after putting on the equipment, and then slide the push plate 504 to drive the insertion pin 505 to be inserted into the positioning hole 503 at the corresponding angle. At this time, the thigh sleeve 2 on the connecting frame 3 is connected through the air inlet pipe 403 and the calf sleeve 1, and the angle will be fixed, and the calf sleeve 1 and the thigh sleeve 2 will be fixed at a fixed angle, thereby limiting the angle of the patient's calf and thigh. Compared with the traditional plaster fixation method, the device is more stable and has better ventilation.

[0038] In addition, the limiting device 5 also includes a movable restraining device 506, which includes a ring body 1 5061 and a ring body 2 5062. The ring body 1 5061 and the ring body 2 5062 are both rotatably connected to the air intake pipe 403. The ring body 1 5061 and the ring body 2 5062 are both connected to a limiting frame 5063. The limiting frame 5063 is slidably connected to the semi-lunar groove 5070 provided inside the connecting frame 3. The calf sleeve 1 is slidably connected to a resistance frame 5066, and the resistance frame 5066 is connected to an inclined plate 5067. The inclined plate 5067 is threadedly connected to an adjusting rod 5065. The bottom of the adjusting rod 5065 is rotatably connected to the calf sleeve 1, and one side of the inclined plate 5067 is abutted against the ring body 2 5062. The ring body 1 5061 and the ring body 2 5062 are both connected with a driving rod 5068, and a return spring 5069 is arranged inside the connecting frame 3, one end of the return spring 5069 is in contact with the ring body 1 5061, and a plurality of slots 31 are provided on the connecting frame 3, and the side of the limiting frame 5063 connected to the ring body 1 5061 and the ring body 2 5062 is fixedly connected with a key 5064. The return spring 5069 will provide a thrust to the ring body 1 5061 and the ring body 2 5062, and when the adjusting rod 5065 rotates to drive the inclined plate 5067 to move upward, the ring body 1 5061 and the ring body 2 5062 will be pushed by the elastic force of the spring to push the key 5064 on the limiting frame 5063 out of the slot 31, and release the activity constraint. When the driving rod 5068 is rotated to control the rotational movement of the ring body 1 5061 and the ring body 2 5062, the rotation process will drive the limit frame 5063 to slide in the semi-lunar groove 5070. When the two limit frames 5063 rotate to the required constraint angle, the control contact frame 5066 is moved downward, thereby driving the two inclined plates 5067 to move downward. After that, the inclined plates 5067 will use the principle of inclined plane sliding to squeeze the ring body 1 5061 and the ring body 2 5062 to make them move laterally. Finally, the two limit frames 5063 will protrude from the semi-lunar groove 5070, and when the limit frames 5063 move laterally, the key 5064 connected to the surface will be controlled to be directly inserted into the interior of the slot 31 to fix the angle of the limit frames 5063. Therefore, while the protruding parts of the two limit frames 5063 are used to limit the pointer plate 502, the movement range of the calf is directly limited.

[0039] Working principle, first of all, the entire calf sleeve 1 and thigh sleeve 2 are based on the wearable principle. After the patient's legs pass through the calf sleeve 1 and the thigh sleeve 2, the rubber ball 401 is pressed continuously by hand. At this time, the gas in the rubber ball 401 will enter the interior of the connecting tube 404 through the air inlet pipe 403, and then injected into the interior of the expansion rubber sleeve 405. The expansion rubber sleeve 405 is injected with air pressure and will continue to expand until it is in squeezing contact with the patient's legs. Two upper and lower expansion rubber sleeves 405 are set to perform double squeezing and fixing on the legs. The overall fixation using air pressure expansion is gentler on the patient, and the overall fit to the patient's skin is more stable. The entire principle uses a "blood pressure measuring" bandage, and an air pump is used to inflate and fix the "bandage". The overall principle is very similar, and medical staff determines whether the calibrated fixed position has been reached based on the expanded air pressure. When it is necessary to deflate the inside, it is necessary to press the push pin 408 to control the closed cone 409 to go deep from the position of the air outlet pipe, and then the airflow will be discharged from the end of the air outlet pipe. The whole principle utilizes the process of "inflating the tire". Inflating will expand, and the expansion will fix the leg, and deflation only needs to press the "valve core" to deflate the inside. The overall operation is more convenient and reliable than the traditional bracket-type fixation. If it is necessary to control the ventilation of the calf sleeve 1, the user needs to turn the rotating ring 407 connected to the push hook 414 to rotate a small angle, so that one of the closed frames 413 is magnetically fixed with the magnetic plate 415, and multiple closed frames 413 are in a dislocated state with the long groove 412, and then the calf sleeve 1 will be in a breathable state, and the patient's leg will be in a breathable state except for the position where the expansion rubber sleeve 405 is attached. The patient can perform light recovery according to the leg in the breathable state to avoid long-term closure and the reverse recovery effect of stuffiness and airtightness in the calf part. If closed heat therapy is required for the legs, the rotating ring 407 is rotated in the opposite direction again to make another set of closed frames 413 magnetically attracted to the magnetic plate 415. At this time, multiple closed frames 413 will be synchronously fitted with the long groove 412, and the entire calf sleeve 1 will be in a closed state. In fact, a heating tube is also provided inside the calf sleeve 1. The electric heating of the heating tube will generate a certain degree of high temperature radiation on the patient's legs to achieve heat therapy. The thickness of the expansion rubber sleeve 405 is thick enough, and the high temperature there is actually lower than 50°C, so it will not cause high temperature damage to the expansion rubber sleeve 405.The entire device also has the effects of angle fixing and angle movement limiting. Because some patients need to fix the angle of their calf and thigh after leg injuries, the medical staff can adjust the angle of the calf and thigh according to the patient's required angle after putting on the device, and then slide the push plate 504 to drive the pin 505 to be inserted into the positioning hole 503 at the corresponding angle. At this time, the thigh sleeve 2 on the connecting frame 3 is connected through the air inlet pipe 403 and the calf sleeve 1, and the angle will be fixed at this time, and the calf sleeve 1 and the thigh sleeve 2 will be at a fixed angle, thereby limiting the angle of the patient's calf and thigh. If the patient wants to recover quickly, he must exercise to a certain extent after being immobilized for a long time. Therefore, an active restraint device 506 is set. Because the patient does not know the range of motion of the legs during recovery exercise, it is easy to cause excessive range of motion and cause greater damage. The active restraint device 506 directly limits the range of motion of the calf and thigh. At this time, it is necessary to rotate the driving rod 5068 to control the rotational movement of the ring body 1 5061 and the ring body 2 5062. The rotation process will drive the limit frame 5063 to slide in the semilunar groove 5070. When the two limit frames 5063 rotate to the required constraint angle, the adjusting rod 5065 is rotated again. The threaded connection is used to control the downward movement of the resistance frame 5066, thereby driving the two inclined plates 5067 to move downward. After that, the inclined plates 5067 will squeeze the ring body 1 506 by the principle of inclined sliding. 1 and the second ring body 5062 make it move laterally, and finally the two limit frames 5063 will protrude from the semilunar groove 5070, and when the limit frame 5063 moves laterally, the key 5064 connected to its surface will be controlled to be directly inserted into the inside of the slot 31 to fix the angle of the limit frame 5063. At this time, when the patient's leg moves, the calf sleeve 1 will be driven to swing, and the air intake pipe 403 will be driven to rotate, and the ring 501 fixed on the air intake pipe 403 will rotate accordingly, and the pointer plate 502 fixedly connected to the ring 501 will rotate synchronously, and when it rotates to the left limit, it will contact and block with one of the limit frames 5063, and when it rotates to the right limit, it will contact and block with the other limit frame 5063. Therefore, while the protruding parts of the two limit frames 5063 are used to limit the pointer plate 502, the movement range of the calf is directly limited. Therefore, the patient will perform exercise recovery according to the limited angle, so the whole device can fix the patient's legs, fix the angle of the patient's calves and thighs, and limit the movement of the movement, thus achieving a multifunctional fixation effect on the patient's legs.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A multifunctional leg fixing device, characterized in that: include A calf sleeve (1) is used for positioning the calf of a human body; A thigh sleeve (2) is used to position the thigh of a human body; The calf sleeve (1) is connected to the thigh sleeve (2) via a connecting frame (3); A fixing device (4) for flexibly positioning the leg; A limiting device (5) is used to limit the angle of the calf and thigh of the human body; The fixing device (4) comprises an air intake device and an expansion rubber sleeve (405), and the air intake device takes in air to inflate the expansion rubber sleeve (405) to finally fix the legs of the human body in an air cushion manner.

2. A multifunctional leg fixing device according to claim 1, characterized in that: The inflation device comprises a rubber ball (401), the rubber ball (401) is connected to an air extraction pipe (402), the rubber ball (401) is also connected to an air intake pipe (403), one end of the air intake pipe (403) is connected to an expansion rubber sleeve (405) through a connecting pipe (404), a frame (406) is arranged inside the expansion rubber sleeve (405), and the frame (406) is fixed inside the calf sleeve (1).

3. A multifunctional leg fixing device according to claim 2, characterized in that: The air inlet pipe (403) and the air exhaust pipe (402) are provided with a one-way valve inside. Pressing the rubber ball (401) will control the internal gas to be squeezed and injected into the inside of the expansion rubber sleeve (405), so that the expansion rubber sleeve (405) is expanded to fix the calf. The expansion rubber sleeve (405) is provided in two groups, and the two groups of expansion rubber sleeves (405) are arranged up and down, and the two groups of expansion rubber sleeves (405) are connected through a pipeline.

4. A multifunctional leg fixing device according to claim 3, characterized in that: The interior of the calf sleeve (1) is a double-layer structure, and a sliding rod (410) is fixedly connected to the inner wall of the calf sleeve (1), the surface of the sliding rod (410) is sleeved with a push-pull spring (411), the surface of the sliding rod (410) is slidably connected to a closed cone (409), one end of the closed cone (409) is connected to a push pin (408), the expansion rubber sleeve (405) is connected to an air outlet pipe, and the closed cone (409) abuts against the pipe mouth of the air outlet pipe.

5. The multifunctional leg fixing device according to claim 4, characterized in that: The calf sleeve (1) is provided with a plurality of long grooves (412); a closed frame (413) is provided in the double-layer space of the calf sleeve (1); a rotating ring (407) is fixedly connected to the closed frame (413); a push hook (414) is connected to the rotating ring (407); the rotating ring (407) is rotatably connected to the calf sleeve (1); a magnetic plate (415) is fixedly connected to the interior of the calf sleeve (1); and the closed frame (413) is fixed to the magnetic plate (415) by magnetic attraction.

6. The multifunctional leg fixing device according to claim 5, characterized in that: The limiting device (5) comprises a collar (501), the collar (501) is fixed on the intake pipe (403), a pointer plate (502) is fixedly connected to the collar (501), a scale line is provided on the connecting frame (3), a plurality of positioning holes (503) are provided on the collar (501), a push plate (504) is slidably connected to the connecting frame (3), and the push plate (504) is fixedly connected to a pin (505) matching the positioning hole (503) through a connecting piece.

7. The multifunctional leg fixing device according to claim 6, characterized in that: The limiting device (5) also includes a movable restraining device (506), and the movable restraining device (506) includes a ring body one (5061) and a ring body two (5062), and the ring body one (5061) and the ring body two (5062) are both rotatably connected to the air intake pipe (403), and the ring body one (5061) and the ring body two (5062) are both connected to a limiting frame (5063), and the limiting frame (5063) is slidably connected to a semi-lunar groove (5070) opened inside the connecting frame (3).

8. The multifunctional leg fixing device according to claim 7, characterized in that: The calf sleeve (1) is slidably connected with a resistance frame (5066), the resistance frame (5066) is connected with an inclined plate (5067), the inclined plate (5067) is threadedly connected with an adjustment rod (5065), the bottom of the adjustment rod (5065) is rotatably connected to the calf sleeve (1), and one side of the inclined plate (5067) is abutted against the second ring body (5062).

9. The multifunctional leg fixing device according to claim 8, characterized in that: The ring body one (5061) and the ring body two (5062) are both connected to a driving rod (5068); a return spring (5069) is arranged inside the connecting frame (3); one end of the return spring (5069) is in contact with the ring body one (5061); a plurality of slots (31) are provided on the connecting frame (3); and the side surfaces of the limit frames (5063) connected to the ring body one (5061) and the ring body two (5062) are both fixedly connected to a key (5064).

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