Limb fixing device convenient to adjust

Abstract

The utility model provides a limb fixing device convenient to adjust, and belongs to the technical field of limb fixing. A limb fixing device convenient to adjust comprises a shell, a top cover is fixedly mounted at the top of the shell, a fastening mechanism is arranged at the top of the top cover, and an adjusting mechanism is arranged in the shell; compared with the prior art, the limb fixing device has the advantages that the first pull strap is arranged, a conventional device for fixing the limbs of a patient usually adopts an elastic bandage, blood of the limbs cannot circulate easily after long-time fixing, the limbs are bound for a long time, comfort is insufficient for the patient, and the limb fixing device cannot be used for fixing the limbs of the patient. Through cooperation of the first pull strap, the second bandage and the arc-shaped clamping plate, the fixing reliability can be guaranteed, a certain space can be reserved, and blood circulation of limbs of a patient is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of limb fixation, in particular to a limb fixation device which is convenient to adjust. Background Art

[0002] During the treatment of cardiovascular diseases, doctors usually use restraint devices to fix the patient's limbs in order to prevent the patient's limbs from shaking during the treatment, so as to avoid the operation being affected by the patient's limb shaking.

[0003] Patent No. CN210355201U proposes a limb fixation device, including two supporting columns, a clamping assembly, a height adjustment assembly, a horizontal adjustment assembly and a limb fixation assembly; the clamping assembly includes a clamping seat; the height adjustment assembly includes two first screws; sprockets are fixedly provided at the upper ends of the two first screws; nuts are connected to the two first screws; a supporting cross bar is fixed between the two nuts; the horizontal adjustment assembly includes a sliding sleeve; a moving arm is fixedly connected to the lower part of the sliding sleeve; the middle part of the moving arm is threadedly connected to the second screw; the limb fixation assembly includes an upper fixing part and a lower fixing part; upper airbags and lower airbags are respectively provided inside the upper fixing part and the lower fixing part; the technical problem to be solved by the utility model is to provide a limb fixation device in view of the above shortcomings, which can realize continuous adjustment of the limb fixation position, avoid secondary injury and facilitate the recovery of the limb; it can also make the fixing structure more stable, improve safety and facilitate use.

[0004] When existing devices are used, long-term fixation of the patient's limbs will cause blood circulation problems in the patient's limbs. While maintaining the reliability of fixation, there is still room for improvement in comfort.

[0005] Therefore, the present application provides a conveniently adjustable limb fixing device to meet the needs. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a limb fixing device which is convenient to adjust so as to solve the problem that the blood circulation of the patient's limbs is blocked due to long-term fixation of the existing fixing device.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A conveniently adjustable limb fixing device comprises a shell, a top cover is fixedly mounted on the top of the shell, a fastening mechanism is arranged on the top of the top cover, and an adjusting mechanism is arranged inside the shell;

[0009] A fastening mechanism, the fastening mechanism includes a first hand fixer, a second hand fixer, a first leg fixer and a second leg fixer, the first hand fixer, the second hand fixer, the first leg fixer and the second leg fixer all include an arc-shaped slider, a bottom plate, a slot, a first tension band, a block, a rotating shaft, a bearing seat, an arc-shaped plate and a second bandage, the arc-shaped slider is arranged at the top of the adjustment mechanism, the top of the arc-shaped slider is fixedly connected with the bottom plate, a slot is provided on one side of the bottom plate, the first tension band is movably connected inside the slot, the bottom of the first tension band is fixedly connected with the block, the top of the first tension band is fixedly connected to one side of the rotating shaft, the rotating shaft is movably installed on one side of the bearing seat, the bearing seat is fixedly installed on the top of the arc-shaped plate, and the second bandage is fixedly connected to one side of the arc-shaped plate.

[0010] As a preferred scheme, the first hand fixer, the second hand fixer, the first leg fixer and the second leg fixer also include an arc-shaped splint, a hinge block, a hollow tube, a limit ring, a first Velcro, a second Velcro, a limit block and a rotating handle, the hinge block is fixedly installed on the top of the base plate, the top of the hinge block is movably connected with the arc-shaped splint, the hollow tube is fixedly installed on one side of the bearing seat, one side of the hollow tube is fixedly connected to the limit ring, one side of the hollow tube is movably connected with the first Velcro, the bottom of the first Velcro is fixedly connected with the second Velcro, the bottom of the first Velcro is movably connected to the limit block, and one side of the limit ring is movably connected with the rotating handle.

[0011] As a preferred solution, the top of the second bandage is fixedly connected to the bottom of the arc-shaped plate, the bottom of the second bandage is fixedly connected to the top of the bottom plate, and the card block is movably connected inside the card slot.

[0012] As a preferred solution, the arc splint is movably connected to the bottom of the arc plate, the part of the first Velcro passing through the limit block is the second Velcro, the front and back sides of the first Velcro and the second Velcro are respectively a hook side and a fleece side, and the hook side and the fleece side can be fixedly connected.

[0013] As a preferred solution, the adjustment mechanism includes a chassis, a positioning column, a first servo motor, a positioning rod, a turntable, an internal threaded ring and a threaded shaft. The chassis is arranged on one side of the outer shell, the top of the chassis is fixedly connected with the positioning column, the top of the chassis is fixedly installed with the first servo motor, the top of the positioning column is movably connected with the positioning rod, the top of the positioning rod is fixedly connected with the turntable, the bottom of the turntable is fixedly connected with the internal threaded ring, and the bottom of the internal threaded ring is threadedly sleeved with a threaded shaft.

[0014] As a preferred solution, the adjustment mechanism also includes a second servo motor, a bevel gear, a bevel toothed disc, an arc-shaped slide groove, a first swivel ring and a second swivel ring. The second servo motor is fixedly installed on one side of the swivel disc, the output end of the second servo motor is fixedly connected to the bevel gear, one side of the bevel gear is meshed and transmitted with a bevel toothed disc, an arc-shaped slide groove is provided on the top of the bevel toothed disc, the bottom of the bevel toothed disc is fixedly connected to the first swivel ring, and the bottom of the first swivel ring is movably connected to the second swivel ring.

[0015] As a preferred solution, the length of the positioning rod is the same as the length of the internal thread ring and the threaded shaft, and the threaded shaft is fixedly connected to the output end of the first servo motor.

[0016] As a preferred solution, the second rotating ring is fixedly mounted on the top of the rotating disk, and the curvature of the arc-shaped sliding groove is the same as that of the arc-shaped sliding block.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] 1. A conveniently adjustable limb fixation device is provided with a first tension belt. Conventional devices for fixing patient limbs usually use elastic bandages. This method is likely to cause blood circulation problems in the limbs after long-term fixation, and the limbs are bound for a long time, which is not comfortable enough for patients. The cooperation of the first tension belt, the second bandage and the arc splint can not only ensure the reliability of fixation, but also leave a certain space to ensure blood circulation in the patient's limbs.

[0019] 2. A limb fixation device that is easy to adjust. By setting a conical toothed disc, during the operation, since the patient's limbs are fixed and cannot move actively, the doctor cooperates with the operation by starting the threaded shaft to drive the threaded shaft to rotate, which can drive the internal threaded ring and the turntable to move upward. At the same time, by starting the second servo motor to drive the bevel gear and the conical toothed disc to engage and transmit, the angle can be adjusted, which is convenient for the doctor to adjust the patient's body angle at any time according to the need for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0021] Figure 1 It is a schematic diagram of the main structure of a limb fixing device that is easy to adjust;

[0022] Figure 2 It is a schematic diagram of the partial structure of a limb fixing device that is easy to adjust;

[0023] Figure 3It is a schematic diagram of the main structure of a fastening mechanism of a limb fixing device that is easy to adjust;

[0024] Figure 4 It is a schematic diagram of the local structure of the fastening mechanism;

[0025] Figure 5 It is a schematic diagram of the explosion structure of the fastening mechanism;

[0026] Figure 6 It is a schematic diagram of the main structure of the regulating mechanism;

[0027] Figure 7 It is a schematic diagram of the local structure of the regulating mechanism;

[0028] Figure 8 It is a schematic diagram of the structure of the adjusting mechanism turntable.

[0029] [reference numerals]

[0030] 1. Shell; 2. Top cover; 3. Fastening mechanism; 31. First hand fixer; 32. Second hand fixer; 33. First leg fixer; 34. Second leg fixer; 301. Arc slider; 302. Bottom plate; 303. Slot; 304. First tension belt; 305. Block; 306. Rotating shaft; 307. Bearing seat; 308. Arc plate; 309. Second bandage; 310. Arc splint; 311. Articulated block; 312. Hollow tube; 313. Limiting ring; 314, first Velcro; 315, second Velcro; 316, limiting block; 317, rotating handle; 4, adjusting mechanism; 401, chassis; 402, positioning column; 403, first servo motor; 404, positioning rod; 405, turntable; 406, internal thread ring; 407, threaded shaft; 408, second servo motor; 409, bevel gear; 410, bevel gear disc; 411, arc-shaped slide groove; 412, first swivel; 413, second swivel.

[0031] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example

[0034] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a conveniently adjustable limb fixing device, comprising a shell 1, a top cover 2 is fixedly mounted on the top of the shell 1, a fastening mechanism 3 is arranged on the top of the top cover 2, and an adjusting mechanism 4 is arranged inside the shell 1;

[0035] like Figure 3 , Figure 4 and Figure 5 As shown, the fastening mechanism 3 includes a first hand fixer 31, a second hand fixer 32, a first leg fixer 33 and a second leg fixer 34. The first hand fixer 31, the second hand fixer 32, the first leg fixer 33 and the second leg fixer 34 all include an arc-shaped slider 301, a bottom plate 302, a slot 303, a first tension belt 304, a block 305, a rotating shaft 306, a bearing seat 307, an arc plate 308 and a second bandage 309. The arc-shaped slider 301 is arranged on the adjusting mechanism At the top of structure 4, the top of the arc-shaped slider 301 is fixedly connected to the bottom plate 302, a slot 303 is opened on one side of the bottom plate 302, the inside of the slot 303 is movably connected to the first tension belt 304, the bottom of the first tension belt 304 is fixedly connected to the clamping block 305, the top of the first tension belt 304 is fixedly connected to one side of the rotating shaft 306, the rotating shaft 306 is movably installed on one side of the bearing seat 307, the bearing seat 307 is fixedly installed on the top of the arc-shaped plate 308, and one side of the arc-shaped plate 308 is fixedly connected to the second bandage 309.

[0036] The first hand fixer 31, the second hand fixer 32, the first leg fixer 33 and the second leg fixer 34 also include an arc-shaped splint 310, a hinge block 311, a hollow tube 312, a limiting ring 313, a first Velcro 314, a second Velcro 315, a limiting block 316 and a rotating handle 317. The hinge block 311 is fixedly installed on the top of the base plate 302, and the top of the hinge block 311 is movably connected with the arc-shaped splint 310, the hollow tube 312 is fixedly installed on one side of the bearing seat 307, one side of the hollow tube 312 is fixedly connected to the limiting ring 313, one side of the hollow tube 312 is movably connected with the first Velcro 314, the bottom of the first Velcro 314 is fixedly connected with the second Velcro 315, the bottom of the first Velcro 314 is movably connected to the limiting block 316, and one side of the limiting ring 313 is movably connected with the rotating handle 317.

[0037] The top of the second bandage 309 is fixedly connected to the bottom of the arc plate 308 , the bottom of the second bandage 309 is fixedly connected to the top of the bottom plate 302 , and the clamping block 305 is movably connected to the inside of the clamping slot 303 .

[0038] The arc splint 310 is movably connected to the bottom of the arc plate 308, and the part of the first Velcro 314 passing through the limit block 316 is the second Velcro 315. The front and back surfaces of the first Velcro 314 and the second Velcro 315 are a hook surface and a fleece surface respectively, and the hook surface and the fleece surface can be fixedly connected.

[0039] What needs to be further explained is: when the patient's limbs need to be fixed, first grab the rotating shaft 306 to drive the arc plate 308 and the bearing seat 307 to lift up. At this time, the first Velcro 314 is pulled out from one side of the limit block 316 by force, the first Velcro 314 grows, and the second Velcro 315 shortens. In this process, the first tension band 304 slowly grows, and the arc plate 308 gradually moves away from the arc splint 310, thereby causing the space formed by the arc plate 308, the second bandage 309 and the arc splint 310 to gradually increase. At this time, the patient can extend his hand or leg from one side of the arc splint 310 until it passes through the entire arc splint. 310. At this time, the doctor manually turns the rotating handle 317 to drive the rotating shaft 306 to rotate, and drives the first tension band 304 to wrap around one side of the rotating shaft 306. As the first tension band 304 shortens, the space formed by the first tension band 304, the arc plate 308, the second bandage 309 and the arc splint 310 also decreases. When the arc splint 310 fits the patient's limbs, the doctor manually pulls the second Velcro 315 to drive the first Velcro 314 to pass through the limit block 316. When the first Velcro 314 is tightened, the second Velcro 315 is attached to one side of the first Velcro 314 to complete the fixation of the patient's limbs.

[0040] like Figure 6 , Figure 7 and Figure 8 As shown, the adjustment mechanism 4 includes a chassis 401, a positioning column 402, a first servo motor 403, a positioning rod 404, a turntable 405, an internal threaded ring 406 and a threaded shaft 407. The chassis 401 is arranged on one side of the shell 1, the top of the chassis 401 is fixedly connected with the positioning column 402, the top of the chassis 401 is fixedly installed with the first servo motor 403, the top of the positioning column 402 is movably connected with the positioning rod 404, the top of the positioning rod 404 is fixedly connected with the turntable 405, the bottom of the turntable 405 is fixedly connected with the internal threaded ring 406, and the bottom of the internal threaded ring 406 is threadedly sleeved with the threaded shaft 407.

[0041] The adjustment mechanism 4 also includes a second servo motor 408, a bevel gear 409, a bevel toothed disc 410, an arc-shaped slide groove 411, a first rotating ring 412 and a second rotating ring 413. The second servo motor 408 is fixedly installed on one side of the rotating disc 405. The output end of the second servo motor 408 is fixedly connected to the bevel gear 409. One side of the bevel gear 409 is meshed with the bevel toothed disc 410. An arc-shaped slide groove 411 is provided on the top of the bevel toothed disc 410. The bottom of the bevel toothed disc 410 is fixedly connected to the first rotating ring 412. The bottom of the first rotating ring 412 is movably connected to the second rotating ring 413.

[0042] The length of the positioning rod 404 is the same as the length of the internal thread ring 406 and the threaded shaft 407 . The threaded shaft 407 is fixedly connected to the output end of the first servo motor 403 .

[0043] The second rotating ring 413 is fixedly mounted on the top of the rotating disk 405 , and the curvature of the arc-shaped sliding groove 411 is the same as that of the arc-shaped sliding block 301 .

[0044] It needs to be further explained that: after the patient's limbs are fixed, the doctor starts the operation. During the operation, the height and angle of the conical toothed disc 410 can be adjusted according to the doctor's needs. The specific operation is as follows: when the height of the conical toothed disc 410 needs to be adjusted, the first servo motor 403 is started to drive the threaded shaft 407 to rotate. Since the thread groove provided inside the internal threaded ring 406 is adapted to the threaded shaft 407, and the positioning rod 404 at the bottom of the turntable 405 is movably connected to the inside of the positioning column 402, the cooperation between the positioning rod 404 and the positioning column 402 restricts the turntable 405 and the internal threaded ring 406, so that the internal threaded ring 406 and the turntable 405 can only rise or fall with the rotation of the threaded shaft 407;

[0045] When the angle of the conical toothed disc 410 needs to be adjusted, the conical toothed disc 410 can be driven to rotate by starting the second servo motor 408 to drive the conical gear 409 to engage with the conical toothed disc 410. The conical toothed disc 410 can be adjusted to a suitable angle according to the doctor's needs, so that the doctor can perform surgery under a suitable surgical field of view.

[0046] Working principle and use process of the utility model: during the use of the utility model, when a limb fixation device that is easy to adjust is used, first, the patient needs to lie on the top of the conical toothed disc 410, and align the limbs with the first hand fixator 31, the second hand fixator 32, the first leg fixator 33 and the second leg fixator 34 respectively, and then when the patient's limbs need to be fixed, first grasp the rotating shaft 306 to drive the arc plate 308 and the bearing seat 307 to lift upward, at this time, the first Velcro 314 is forced to be pulled out from one side of the limit block 316, the first Velcro 314 grows, and the second Velcro 315 shortens. In this process, the first tension belt 304 slowly grows, and the arc plate 308 gradually moves away from the arc splint 310, thereby causing the arc plate 308, the second bandage 309 and The space formed by the arc splint 310 gradually increases. At this time, the patient can extend his hand or leg from one side of the arc splint 310 until it passes through the entire arc splint 310. At this time, the doctor manually turns the rotating handle 317 to drive the rotating shaft 306 to rotate, and drives the first tension band 304 to wrap around one side of the rotating shaft 306. As the first tension band 304 shortens, the space formed by the first tension band 304, the arc plate 308, the second bandage 309 and the arc splint 310 also decreases. When the arc splint 310 fits the patient's limbs, the doctor manually pulls the second Velcro 315 to drive the first Velcro 314 to pass through the limit block 316. When the first Velcro 314 is tightened, the second Velcro 315 is attached to one side of the first Velcro 314 to complete the fixation of the patient's limbs.

[0047] Next, after the patient's limbs are fixed, the doctor starts the operation. During the operation, the height and angle of the conical toothed disc 410 can be adjusted according to the doctor's needs. The specific operation is as follows: when the height of the conical toothed disc 410 needs to be adjusted, the first servo motor 403 is started to drive the threaded shaft 407 to rotate. Since the thread groove provided inside the internal threaded ring 406 is adapted to the threaded shaft 407, and the positioning rod 404 at the bottom of the turntable 405 is movably connected to the inside of the positioning column 402, the cooperation between the positioning rod 404 and the positioning column 402 restricts the turntable 405 and the internal threaded ring 406, so that the internal threaded ring 406 and the turntable 405 can only rise or fall with the rotation of the threaded shaft 407;

[0048] When the angle of the conical toothed disc 410 needs to be adjusted, the conical toothed disc 410 can be driven to rotate by starting the second servo motor 408 to drive the conical gear 409 to engage with the conical toothed disc 410. The conical toothed disc 410 can be adjusted to a suitable angle according to the doctor's needs, so that the doctor can perform surgery under a suitable surgical field of view.

[0049] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A conveniently adjustable limb fixation device, characterized in that: It comprises a shell (1), a top cover (2) is fixedly mounted on the top of the shell (1), a fastening mechanism (3) is arranged on the top of the top cover (2), and an adjustment mechanism (4) is arranged inside the shell (1); A fastening mechanism (3), wherein the fastening mechanism (3) comprises a first hand fixer (31), a second hand fixer (32), a first leg fixer (33) and a second leg fixer (34); the first hand fixer (31), the second hand fixer (32), the first leg fixer (33) and the second leg fixer (34) all comprise an arc-shaped slider (301), a bottom plate (302), a slot (303), a first tension band (304), a block (305), a rotating shaft (306), a bearing seat (307), an arc-shaped plate (308) and a second bandage (309); the arc-shaped slider (301) is arranged on the adjusting mechanism (4). The top of the arc-shaped slider (301) is fixedly connected to a bottom plate (302), a slot (303) is provided on one side of the bottom plate (302), a first tension band (304) is movably connected inside the slot (303), a block (305) is fixedly connected to the bottom of the first tension band (304), the top of the first tension band (304) is fixedly connected to one side of a rotating shaft (306), the rotating shaft (306) is movably mounted on one side of a bearing seat (307), the bearing seat (307) is fixedly mounted on the top of an arc-shaped plate (308), and a second bandage (309) is fixedly connected to one side of the arc-shaped plate (308).

2. The easily adjustable limb fixing device according to claim 1, characterized in that: The first hand fixer (31), the second hand fixer (32), the first leg fixer (33) and the second leg fixer (34) further include an arc-shaped clamp (310), a hinge block (311), a hollow tube (312), a limiting ring (313), a first Velcro (314), a second Velcro (315), a limiting block (316) and a rotating handle (317), wherein the hinge block (311) is fixedly mounted on the top of the bottom plate (302), and the top of the hinge block (311) is movably connected to the arc-shaped clamp. The plate (310) is provided, wherein the hollow tube (312) is fixedly mounted on one side of the bearing seat (307), a limiting ring (313) is fixedly connected to one side of the hollow tube (312), a first Velcro (314) is movably connected to one side of the hollow tube (312), a second Velcro (315) is fixedly connected to the bottom of the first Velcro (314), a limiting block (316) is movably connected to the bottom of the first Velcro (314), and a rotating handle (317) is movably connected to one side of the limiting ring (313).

3. The easily adjustable limb fixing device according to claim 1, characterized in that: The top of the second bandage (309) is fixedly connected to the bottom of the arc plate (308), the bottom of the second bandage (309) is fixedly connected to the top of the bottom plate (302), and the card block (305) is movably connected inside the card slot (303).

4. The easily adjustable limb fixing device according to claim 2, characterized in that: The arc-shaped clamping plate (310) is movably connected to the bottom of the arc-shaped plate (308); the portion of the first Velcro (314) passing through the limiting block (316) is the second Velcro (315); the front and back surfaces of the first Velcro (314) and the second Velcro (315) are respectively a hook surface and a fleece surface, and the hook surface and the fleece surface can be fixedly connected.

5. The easily adjustable limb fixing device according to claim 1, characterized in that: The adjusting mechanism (4) comprises a chassis (401), a positioning column (402), a first servo motor (403), a positioning rod (404), a rotating disk (405), an internal threaded ring (406) and a threaded shaft (407); the chassis (401) is arranged on one side of the housing (1); the top of the chassis (401) is fixedly connected to the positioning column (402); the top of the chassis (401) is fixedly mounted with the first servo motor (403); the top of the positioning column (402) is movably connected to the positioning rod (404); the top of the positioning rod (404) is fixedly connected to the rotating disk (405); the bottom of the rotating disk (405) is fixedly connected to the internal threaded ring (406); the bottom of the internal threaded ring (406) is threadedly sleeved with the threaded shaft (407).

6. The easily adjustable limb fixing device according to claim 1, characterized in that: The regulating mechanism (4) further comprises a second servo motor (408), a bevel gear (409), a bevel toothed disc (410), an arc-shaped slide groove (411), a first rotating ring (412) and a second rotating ring (413); the second servo motor (408) is fixedly mounted on one side of the rotating disc (405); the output end of the second servo motor (408) is fixedly connected to the bevel gear (409); one side of the bevel gear (409) is meshed with the bevel toothed disc (410); an arc-shaped slide groove (411) is provided on the top of the bevel toothed disc (410); the bottom of the bevel toothed disc (410) is fixedly connected to the first rotating ring (412); the bottom of the first rotating ring (412) is movably connected to the second rotating ring (413).

7. The easily adjustable limb fixing device according to claim 5, characterized in that: The length of the positioning rod (404) is the same as the length of the internal thread ring (406) and the threaded shaft (407), and the threaded shaft (407) is fixedly connected to the output end of the first servo motor (403).

8. The easily adjustable limb fixing device according to claim 6, characterized in that: The second rotating ring (413) is fixedly mounted on the top of the rotating disk (405), and the curvature of the arc-shaped sliding groove (411) is the same as that of the arc-shaped sliding block (301).

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