CN114191242A - Limb fixing device with protection function for child surgery - Google Patents

Abstract

The invention relates to a limb fixing device technology, which is used for solving the problems that a limb fixing device cannot be disassembled, is inconvenient to use, is complex to operate in a cleaning process and has high cost, in particular to a limb fixing device with a protection function for children operation; according to the invention, the locking of the limb fixing device is realized through the panel and the clamping plate, the limb fixing device is convenient to disassemble, the limb fixing device can be flexibly selected according to needs in use, the limb fixing device can be disassembled to avoid occupying space when not in use, the device can be quickly and stably fixed at the edge of an operating table when in use, the use is flexible, the comprehensive cleaning is convenient to realize after the disassembly, the dust and bacteria at the tiny crack of the device are ensured, the included angle between the telescopic rod and the supporting plate is convenient to adjust through rotating the connecting sleeve, meanwhile, the structural strength of the telescopic rod is ensured through the combination of the clamping groove and the clamping teeth, the elevation angle of the telescopic rod can be adjusted to a greater extent, and the horizontal use of the telescopic plate is realized.

Description

Limb fixing device with protection function for child surgery

Technical Field

The invention relates to a limb fixing device technology, in particular to a limb fixing device with a protection function for children operation.

Background

In various surgical operations, safe and reasonable operation positions are the basic guarantee of operation success, particularly, neurosurgery microsurgery is operated under a microscope, the operation position is deep, the operation field is narrow, the operation is fine, the operation time is long, the accurate positions are easy to expose the operation field and convenient for doctors to operate accurately, simultaneously, the fatigue of doctors can be relieved, the occurrence of complications in the operation can be reduced, simultaneously, because the patient needs to be anesthetized during the operation, and the patient loses consciousness after anesthesia, the soft tissue is easy to extrude and hurt due to the fact that the incorrect posture is kept for a long time, a limb fixing device is often needed in the operation;

the existing limb fixing device is fixed on a sickbed for use and cannot be detached, when the patient is not used, the patient cannot be detached for use by other patients, the whole sickbed is complex in structure and large in size, the characteristic of incapability of being detached is not beneficial to comprehensive cleaning between gaps, after an operation is finished, the operation is complex when equipment is cleaned, a user needs to prepare a great deal of instruments before use, the efficiency is low, and the cleaning cost is high.

In view of the above technical problem, the present application proposes a solution.

Disclosure of Invention

The invention realizes the locking of the limb fixing device through the panel and the splint, is convenient to disassemble the limb fixing device, can be flexibly selected according to the needs in use, can be disassembled to avoid occupying space when the limb fixing device is not needed, can be quickly and stably fixed at the edge of an operating table when the limb fixing device is used, is flexible to use, is convenient to realize comprehensive cleaning after disassembly, ensures the dust-free and aseptic position of a tiny crack of the device, is convenient to adjust the included angle between the telescopic rod and the support plate by rotating the connecting sleeve, can adjust the fulcrum position of the telescopic rod through the combination of the clamping groove and the clamping teeth, not only ensures the structural strength of the telescopic rod, but also can adjust the elevation angle of the telescopic rod to a greater extent, can realize the laminating of the telescopic rod and the support plate when the clamping teeth are taken out of the clamping groove, realizes the horizontal use of the telescopic plate, and solves the problem that the limb fixing device can not be disassembled, the limb fixing device with the protection function for the child operation is provided.

The purpose of the invention can be realized by the following technical scheme:

a limb fixing device with a protection function for children surgery comprises a panel, wherein a connecting seat is fixedly arranged below the panel, a hole is formed in the middle of the connecting seat, a rotating shaft penetrates through the hole, a rotating disc and a ratchet wheel are fixedly connected to two ends of the rotating shaft respectively, a plurality of groups of grooves are formed in the outer wall of the rotating disc, a pulling cable is fixedly connected to the inside of each group of grooves, a clamping plate is fixedly connected to the bottom of the pulling cable, and a rotating mechanism is rotatably connected to the upper side of the panel;

the rotating mechanism comprises a rotating table, a middle shaft, a fluted disc, an extension shaft and a limiting block, the middle shaft is rotatably connected inside the panel, the top of the middle shaft protrudes out of the upper surface of the panel, the rotating table is fixedly connected above the middle shaft, the bottom end of the middle shaft is fixedly arranged on the upper surface of the fluted disc, the fluted disc is rotatably connected inside the panel, a telescopic rod is rotatably connected above the rotating table, and a binding ring is arranged above the telescopic rod;

one side of the connecting seat close to the ratchet wheel is rotatably connected with a pawl, and the front end of the pawl is connected to the outer wall of the ratchet wheel in a clamping mode.

As a preferred embodiment of the present invention, a groove is formed in the upper surface of the panel, the groove is communicated with a cavity in which the fluted disc is located, a locking mechanism is disposed in the groove, the locking mechanism includes a clamping block, a connecting rod, a pulling plate, a spring and a baffle plate, the clamping block is slidably connected inside the groove, gear teeth mutually engaged with the fluted disc are disposed on one side of the clamping block, the connecting rod is fixedly connected to the other side of the clamping block, the pulling plate is fixedly connected to one end of the connecting rod away from the clamping block, the connecting rod penetrates through the baffle plate, the baffle plate is fixedly mounted in the groove, the spring is sleeved on the outer wall of the connecting rod, and two ends of the spring respectively abut against the outer wall of the baffle plate and the outer wall of the clamping block.

As a preferred embodiment of the present invention, a support plate is fixedly installed on a side wall of the turntable, a second support rod is rotatably connected to a lower surface of the telescopic rod through a bearing, a threaded groove is formed in an outer wall of the second support rod, the second support rod is connected to a connecting sleeve through the threaded groove, a first support rod is connected to a lower half portion of the connecting sleeve in a threaded manner, an installation plate is fixedly installed at the bottom of the first support rod, a latch is fixedly installed on a lower surface of the installation plate, a clamping groove is formed in an upper surface of the support plate, a rack is arranged in a front half section of the clamping groove, and an accommodation cavity is arranged in a rear half section of the clamping groove.

As a preferred embodiment of the invention, a plurality of groups of reinforcing ribs are fixedly arranged on the lower surface of the clamping plate, each group of reinforcing ribs is positioned right below the joint of the stay cable and the clamping plate, the winding direction of the stay cable is the same as the rotation direction of the ratchet wheel, and a rocker is fixedly connected at the axle center of the turntable.

As a preferred embodiment of the present invention, the pawl is rotatably connected to the outer wall of the connecting seat through a rotating shaft, a torsion spring is wound around the rotating shaft, one end of the torsion spring is connected to the inside of the pawl, and the other end of the torsion spring abuts against the outer wall of the connecting seat.

As a preferred embodiment of the present invention, the extension shaft is fixedly installed on the lower surface of the fluted disc, the extension shaft penetrates out from the lower side of the panel, the bottom end of the extension shaft is fixedly installed with a limit block, and the limit block is slidably connected above the pawl.

As a preferred embodiment of the present invention, the latch is engaged with a rack portion connected in the slot, handles are fixedly connected to the outer side of the connecting sleeve, the handles are symmetrically arranged on two sides of the connecting sleeve, and the connecting sleeve is provided with an observation window in a direction perpendicular to the handle.

As a preferred embodiment of the present invention, the telescopic rod includes an upper sliding plate and a bottom plate, one end of the bottom plate is rotatably connected to the rotary table, the second support rod is rotatably connected to a lower surface of the bottom plate, and the upper sliding plate is slidably connected to the upper side of the bottom plate through an electric control.

As a preferred embodiment of the invention, the use method of the limb fixing device comprises the following steps:

the method comprises the following steps: the panel and the clamping plate are respectively arranged at the upper end and the lower end of the operating bed, the rocker is rotated to drive the turntable to rotate, and the turntable drives the inhaul cable to be wound when rotating, so that the inhaul cable drives the clamping plate to ascend and is clamped at one side of the operating bed in a matching way with the panel;

step two: pulling the pulling plate to enable the pulling plate to drive the clamping block to slide through the connecting rod, enabling the clamping block to be separated from the fluted disc, rotating the rotary table to enable the rotary table to drive the extension shaft to rotate, enabling the extension shaft to drive the limiting block to extrude the pawl, and ensuring the stability of the ratchet wheel;

step three: and loosening the pulling plate, resetting the locking mechanism, moving the position of the clamping tooth clamped in the clamping groove, rotating the connecting sleeve to adjust the elevation angle of the telescopic rod to a proper position, controlling the telescopic rod to stretch out and draw back, and finishing the adjustment of the position of the restraint ring.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the locking of the limb fixing device is realized through the panel and the splint, the limb fixing device is convenient to disassemble, the limb fixing device can be flexibly selected according to the needs in use, the limb fixing device can be disassembled to avoid occupying space when the limb fixing device is not needed, the device can be quickly and stably fixed at the edge of an operating table when the limb fixing device is used, the use is flexible, the comprehensive cleaning is convenient to realize after the disassembly, and the dust-free and aseptic condition of a tiny gap of the device is ensured.

2. In the invention, when the limb fixing device is used, the rotary table needs to drive the telescopic rod and the supporting plate to be unfolded in a rotating mode, when the rotary table is unfolded in a rotating mode, the limiting block below the rotary table is pressed above the pawl, the ratchet wheel is prevented from loosening in the using process, when the rotary table is rotated to be parallel to the panel, the limiting block loses the limiting effect on the ratchet wheel, and the limb fixing device is convenient to take down.

3. According to the telescopic plate, the connecting sleeve is rotated, so that the included angle between the telescopic rod and the supporting plate can be conveniently adjusted, meanwhile, the position of the fulcrum of the telescopic rod can be adjusted through the combination of the clamping groove and the clamping teeth, the structural strength of the telescopic rod is guaranteed, the elevation angle of the telescopic rod can be adjusted to a greater extent, when the clamping teeth are taken out of the clamping groove, the telescopic rod can be attached to the supporting plate, and the telescopic plate can be horizontally used.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic view of the ratchet and pawl structure of the present invention;

FIG. 3 is a schematic view of the stopper structure of the present invention;

FIG. 4 is a schematic view of the torsion spring of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 6 is a schematic view of a connecting sleeve structure of the present invention;

FIG. 7 is an enlarged view of the structure at B in FIG. 6 according to the present invention;

FIG. 8 is a schematic view of the locking mechanism of the present invention;

FIG. 9 is an enlarged view of the structure of FIG. 8 at C in the present invention;

FIG. 10 is a structural diagram of a toothed disc according to the present invention.

In the figure: 1. a panel; 2. a splint; 201. reinforcing ribs; 3. a cable; 4. a turntable; 401. a rocker; 5. a ratchet wheel; 501. a pawl; 6. a connecting seat; 7. a locking mechanism; 701. a clamping block; 702. a connecting rod; 703. pulling a plate; 704. a spring; 705. a baffle plate; 8. a rotating mechanism; 801. a turntable; 802. a middle shaft; 803. a fluted disc; 804. an extension shaft; 805. a limiting block; 9. a telescopic rod; 901. an upper slide plate; 902. a base plate; 10. a support plate; 11. a card slot; 12. a first support bar; 13. a second support bar; 14. connecting sleeves; 15. a handle; 16. mounting a plate; 17. clamping teeth; 18. a binding ring.

Detailed Description

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

The first embodiment is as follows:

referring to fig. 1-5, a limb fixing device with a protection function for children surgery comprises a panel 1, a connecting seat 6 is fixedly installed below the panel 1, a hole is formed in the middle of the connecting seat 6, a rotating shaft is inserted into the hole and connected with the connecting seat 6 through a bearing seat to reduce friction force applied to the rotating shaft when the rotating shaft rotates between the connecting seat 6 as much as possible and reduce abrasion of the rotating shaft, a rotating disc 4 and a ratchet 5 are respectively and fixedly connected to two ends of the rotating shaft, a pawl 501 is rotatably connected to one side of the connecting seat 6 close to the ratchet 5, the front end of the pawl 501 is connected to the outer wall of the ratchet 5 in a clamping manner to limit rotation of the ratchet 5, a plurality of grooves are formed in the outer wall of the rotating disc 4, a pulling cable 3 is fixedly connected to the inside of each groove, the depth of each groove is larger than the diameter of a rolled rope of the pulling cable 3, a clamping plate 2 is fixedly connected to the bottom of the pulling cable 3, the pulling cables 3 are equidistantly distributed on the clamping plate 2, when the inhaul cable 3 is wound, the pulling force applied to two ends of the clamping plate 2 is larger, a plurality of groups of reinforcing ribs 201 are fixedly arranged on the lower surface of the clamping plate 2, each group of reinforcing ribs 201 are positioned right below the joint of the inhaul cable 3 and the clamping plate 2 so as to ensure that the clamping plate 2 is integrally extruded upwards, a rocker 401 is fixedly connected to the axis of the turntable 4 so as to facilitate the rotation of the turntable 4, the convenience and labor saving are realized, and a rotating mechanism 8 is rotatably connected to the upper part of the panel 1;

the rotating mechanism 8 comprises a rotating table 801, a center shaft 802, a fluted disc 803, an extension shaft 804 and a limiting block 805, wherein the center shaft 802 is rotatably connected inside the panel 1 to play a connecting role, the top of the center shaft 802 protrudes out of the upper surface of the panel 1, the rotating table 801 is fixedly connected above the center shaft 802, a small gap exists between the rotating table 801 and the upper surface of the panel 1 to ensure the flexibility of the rotating table 801 when rotating, the bottom end of the center shaft 802 is fixedly installed on the upper surface of the fluted disc 803, the fluted disc 803 is rotatably connected inside the panel 1, the connection between the fluted disc 803 and the panel 1 is realized through wear-resistant layers on the upper and lower surfaces of the fluted disc 803, the outer wall of the fluted disc 803 is provided with a plurality of groups of gear teeth, the extension shaft 804 is fixedly installed on the lower surface of the fluted disc 803, the fluted disc 803 can drive the extension shaft 804 to rotate together when rotating, the extension shaft 804 penetrates out from the lower part of the panel 1, the bottom end of the extension shaft 804 is fixedly provided with the limiting block 805, the pawl 501 is rotatably connected on the outer wall of the connecting seat 6 through a rotating shaft, a torsion spring is wound at the rotating shaft, one end of the torsion spring is connected inside the pawl 501, the other end of the torsion spring abuts against the outer wall of the connecting seat 6, a limiting block 805 is a disc with a notch, so that the pawl 501 can bounce when the notch is positioned above the pawl 501, the ratchet wheel 5 can rotate, when the position except the notch is positioned above the pawl 501, the pawl 501 can be pressed down, and therefore the rotation of the ratchet wheel 5 is limited, the limiting block 805 is connected above the pawl 501 in a sliding mode, an expansion rod 9 is rotatably connected above the rotary table 801, the expansion rod 9 can be externally connected with a conventional control device to control extension and shortening, a binding ring 18 is arranged above the expansion rod 9, and the binding ring 18 is made of a softer material to ensure the comfort in use;

the upper surface of the panel 1 is further provided with a groove, the groove is communicated with a cavity where the fluted disc 803 is located, the groove is internally provided with a locking mechanism 7, the locking mechanism 7 comprises a clamping block 701, a connecting rod 702, a pulling plate 703, a spring 704 and a baffle 705, the clamping block 701 is slidably connected in the groove, the clamping block 701 is arc-shaped, so that the clamping block 701 is more attached to the fluted disc 803, one side of the clamping block 701 is provided with teeth mutually clamped with the fluted disc 803, when the teeth on the clamping block 701 are inserted into the fluted disc 803, the fluted disc 803 cannot rotate, so that the upper turntable 801 and the lower limiting block 805 are fixed, the other side of the clamping block 701 is fixedly connected with the connecting rod 702, the connecting rod 702 can drive the clamping block 701 to move, one end of the connecting rod 702 far away from the clamping block 701 is fixedly connected with the pulling plate 703, the connecting rod 702 is convenient for pulling the hand to open, the connecting rod 702 penetrates through the baffle 705, the baffle 704 is fixedly arranged in the groove, the spring 704 is sleeved on the outer wall of the connecting rod 702, and two ends of the spring 705 are respectively abutted against the outer walls of the baffle 705 and the clamping block 701, when the pulling plate 703 drives the connecting rod 702 to move, the latch 701 drives the spring 704 to move toward the baffle 705, because the baffle 705 is fixed inside the groove, the latch 701 and the baffle 705 compress the spring 704, but the latch 17 on the latch 701 is disengaged from the toothed disc 803 at this time, so that the rotating mechanism 8 can complete rotation, and when the pulling plate 703 is released, the spring 704 resets under the action of elastic force, drives the latch 701 to be latched into the toothed disc 803 again, locks the toothed disc 803, and prevents the rotating mechanism 8 from rotating.

Example two:

referring to fig. 5-10, a supporting plate 10 is fixedly installed on a side wall of a turntable 801, a second supporting rod 13 is rotatably connected to a lower surface of a telescopic rod 9 through a bearing, a thread groove is formed in an outer wall of the second supporting rod 13, the second supporting rod 13 is connected to a connecting sleeve 14 through the thread groove, a first supporting rod 12 is connected to a lower half portion of the connecting sleeve 14 through a thread, the thread rotating directions of the first supporting rod 12 and the second supporting rod 13 are opposite, the first supporting rod 12 and the second supporting rod 13 can be controlled to be away from or close to each other when the connecting sleeve 14 is rotated, a mounting plate 16 is fixedly installed at the bottom of the first supporting rod 12, a latch 17 is fixedly installed on a lower surface of the mounting plate 16, a slot 11 is formed in an upper surface of the supporting plate 10, a rack is arranged in a front half of the slot 11, the rack and the latch 17 can be engaged with each other, a containing cavity is arranged in a rear half of the slot 11, when the telescopic rod 9 needs to be attached to the supporting plate 10, the telescopic rod 9 can be advanced upwards, then the second support rod 13 is rotated, the second support rod 13, the first support rod 12 and the connecting sleeve 14 are folded to be attached to the lower surface of the telescopic rod 9, then the telescopic rod 9 is covered on the upper surface of the support plate 10, the second support rod 13, the first support rod 12 and the connecting sleeve 14 are arranged in the cavity, the telescopic rod 9 is horizontally arranged, the latch 17 is clamped with the rack part connected in the clamping groove 11, when the elevation angle of the telescopic rod 9 needs to be reduced, the first support rod 12 and the second support rod 13 are close to each other by rotating the connecting sleeve 14, when the first support rod 12 and the second support rod 13 are in contact with each other, the first support rod 12 and the second support rod 13 reach the minimum contraction length, at the moment, if the elevation angle of the telescopic rod 9 needs to be reduced again, the included angle between the second support rod 13 and the telescopic rod 9 can be increased by moving the connecting point of the latch 17 in the clamping groove 11 to the outside as much as possible, the elevation angle of the telescopic rod 9 can be further reduced, the handle 15 is fixedly connected to the outer side of the connecting sleeve 14, the handle 15 is symmetrically arranged on two sides of the connecting sleeve 14, the connecting sleeve 14 is convenient to rotate, an observation window is formed in the direction, perpendicular to the handle 15, of the connecting sleeve 14, whether the first supporting rod 12 and the second supporting rod 13 are in mutual contact or not and the spacing distance can be observed, the telescopic rod 9 comprises an upper sliding plate 901 and a bottom plate 902, one end of the bottom plate 902 is rotatably connected to the rotary table 801, and the second supporting rod 13 is rotatably connected to the lower surface of the bottom plate 902.

With the first and second embodiments, the working principle is as follows:

the panel 1 and the splint 2 are respectively arranged at the upper end and the lower end of the operating bed, the rocker 401 is rotated to drive the turntable 4 to rotate, the turntable 4 drives the inhaul cable 3 to wind when rotating, the inhaul cable 3 drives the splint 2 to ascend, the inhaul cable is clamped at one side of the operating bed in a matching way with the panel 1, the limb fixing device can be conveniently disassembled or installed, the use is flexible, the comprehensive cleaning is conveniently realized after the disassembly, the dust-free and sterile of the tiny crack of the device is ensured, when the turntable 4 rotates, the ratchet 5 can also rotate along with the rotation, at the moment, the gap of the limiting block 805 is positioned above the pawl 501, the pawl 501 is lifted up under the action of a torsional spring, the ratchet 5 can smoothly rotate, when the panel 1 and the splint 2 are clamped, the pulling plate is pulled open, the pulling plate 703 drives the fixture block 703 to slide through the connecting rod 702, the fixture block 701 is separated from the fluted disc 803, the turntable 801 is rotated again, so that the turntable 801 drives the rotating mechanism 8 to integrally rotate, the extension shaft 804 rotates along with the extension shaft 804, the extension shaft 804 drives the limiting block 805 to rotate, the position outside the gap of the limiting block 805 gradually contacts and presses the pawl 501, the pawl 501 is pressed downwards, the end portion of the pawl 501 is clamped outside the ratchet 5, the rotation of the ratchet 5 is limited, the stability of the ratchet 5 is guaranteed, the rotary table 801 is rotated to a required angle, the adjustment of the orientation of the rotary table 801 is completed, the pulling plate 703 is loosened, the locking mechanism 7 is reset, the position of the clamping tooth 17 clamped in the clamping groove 11 is moved, the first support rod 12 and the second support rod 13 are close to or far away from each other by rotating the connecting sleeve 14, when the first support rod 12 and the second support rod 13 contact with each other or are respectively located at two ends of the connecting sleeve 14, the first support rod 12 and the second support rod 13 reach the minimum or maximum adjustment length, and at this time, if the elevation angle of the telescopic rod 9 is to be adjusted again, the connecting point of the clamping tooth 17 in the clamping groove 11 can be moved outwards or inwards, adjusting the included angle between the second support rod 13 and the telescopic rod 9 can further adjust the elevation angle of the telescopic rod 9, adjust the elevation angle of the telescopic rod 9 to a proper position, then control the telescopic rod 9 to stretch out and draw back, and complete the adjustment of the position of the restraint ring 18.

Example three:

referring to fig. 1-10, the method of using the limb fixation device includes the following steps:

the method comprises the following steps: the panel 1 and the splint 2 are respectively arranged at the upper end and the lower end of the operating bed, the rocker 401 is rotated to drive the turntable 4 to rotate, the turntable 4 drives the inhaul cable 3 to wind when rotating, so that the inhaul cable 3 drives the splint 2 to ascend, the splint is clamped at one side of the operating bed in a matching way with the panel 1, when the turntable 4 rotates, the ratchet wheel 5 can also rotate along with the inhaul cable, the notch of the limiting block 805 is positioned above the pawl 501, and the pawl 501 is lifted under the action of the torsion spring;

step two: pulling the pulling plate 703 to enable the pulling plate 703 to drive the fixture block 701 to slide through the connecting rod 702, the fixture block 701 is separated from the fluted disc 803, then the rotary table 801 is rotated to enable the rotary table 801 to drive the rotating mechanism 8 to integrally rotate, the extension shaft 804 also rotates along with the rotation, the extension shaft 804 drives the limiting block 805 to rotate, the places except the gap of the limiting block 805 gradually contact and press the pawl 501, the pawl 501 is pressed downwards, the end part of the pawl 501 is clamped outside the ratchet wheel 5, the rotation of the ratchet wheel 5 is limited, and the stability of the ratchet wheel 5 is ensured;

step three: the pulling plate 703 is loosened, the locking mechanism 7 is reset, the movable latch 17 is clamped at the position in the clamping groove 11, the connecting sleeve 14 is rotated or the included angle between the second supporting rod 13 and the telescopic rod 9 is adjusted, the elevation angle of the telescopic rod 9 is adjusted to a proper position, then the telescopic rod 9 is controlled to stretch, and the position of the restraint ring 18 is adjusted.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (9)

1. A limb fixing device with a protection function for children surgery comprises a panel (1), and is characterized in that a connecting seat (6) is fixedly installed below the panel (1), a hole is formed in the middle of the connecting seat (6), a rotating shaft penetrates through the hole, two ends of the rotating shaft are respectively and fixedly connected with a rotating disc (4) and a ratchet wheel (5), a plurality of groups of grooves are formed in the outer wall of the rotating disc (4), a pull cable (3) is fixedly connected inside each group of grooves, a clamping plate (2) is fixedly connected to the bottom of the pull cable (3), and a rotating mechanism (8) is rotatably connected above the panel (1);

the rotating mechanism (8) comprises a rotating table (801), a middle shaft (802), a fluted disc (803), an extension shaft (804) and a limiting block (805), the middle shaft (802) is rotatably connected inside the panel (1), the top of the middle shaft (802) protrudes out of the upper surface of the panel (1), the rotating table (801) is fixedly connected above the middle shaft (802), the bottom end of the middle shaft (802) is fixedly installed on the upper surface of the fluted disc (803), the fluted disc (803) is rotatably connected inside the panel (1), a telescopic rod (9) is rotatably connected above the rotating table (801), and a binding ring (18) is arranged above the telescopic rod (9);

one side of the connecting seat (6) close to the ratchet wheel (5) is rotatably connected with a pawl (501), and the front end of the pawl (501) is connected to the outer wall of the ratchet wheel (5) in a clamping mode.

2. The limb fixing device with the protection function for the children operation as claimed in claim 1, wherein a groove is formed on the upper surface of the panel (1), the groove is communicated with a cavity where the fluted disc (803) is located, a locking mechanism (7) is arranged in the groove, the locking mechanism (7) comprises a clamping block (701), a connecting rod (702), a pulling plate (703), a spring (704) and a baffle (705), the clamping block (701) is slidably connected in the groove, gear teeth mutually clamped with the fluted disc (803) are arranged on one side of the clamping block (701), the connecting rod (702) is fixedly connected on the other side of the clamping block (701), the pulling plate (703) is fixedly connected on one end of the connecting rod (702) far away from the clamping block (701), the connecting rod (702) penetrates through the baffle (705), the baffle (705) is fixedly installed in the groove, the spring (704) is sleeved on the outer wall of the connecting rod (702), two ends of the spring (704) are respectively abutted against the outer wall of the baffle plate (705) and the outer wall of the fixture block (701).

3. A limb fixation device with protection function for children's operation according to claim 1, it is characterized in that a supporting plate (10) is fixedly arranged on the side wall of the turntable (801), the lower surface of the telescopic rod (9) is rotatably connected with a second support rod (13) through a bearing, the outer wall of the second supporting rod (13) is provided with a thread groove, the second supporting rod (13) is connected with a connecting sleeve (14) through the thread groove, the lower half part of the connecting sleeve (14) is in threaded connection with a first supporting rod (12), the bottom of the first supporting rod (12) is fixedly provided with a mounting plate (16), the lower surface of the mounting plate (16) is fixedly provided with a latch (17), the upper surface of the support plate (10) is provided with a clamping groove (11), the front half section of the clamping groove (11) is provided with a rack, and the rear half section of the clamping groove (11) is provided with an accommodating cavity.

4. The limb fixing device with the protection function for the children operation as claimed in claim 1, wherein a plurality of sets of reinforcing ribs (201) are fixedly installed on the lower surface of the splint (2), each set of reinforcing ribs (201) is located right below the joint of the pull cable (3) and the splint (2), the rolling direction of the pull cable (3) is the same as the rotation direction of the ratchet wheel (5), and the shaft center of the turntable (4) is fixedly connected with a rocker (401).

5. The limb fixing device with the protection function for the children's operation as claimed in claim 1, wherein the pawl (501) is rotatably connected to the outer wall of the connecting seat (6) through a rotating shaft, a torsion spring is wound around the rotating shaft, one end of the torsion spring is connected to the inside of the pawl (501), and the other end of the torsion spring abuts against the outer wall of the connecting seat (6).

6. The limb fixing device with the protection function for the children's operation as claimed in claim 1, wherein the extension shaft (804) is fixedly installed on the lower surface of the fluted disc (803), the extension shaft (804) penetrates out from the lower part of the faceplate (1), a limit block (805) is fixedly installed at the bottom end of the extension shaft (804), and the limit block (805) is slidably connected above the pawl (501).

7. The limb fixing device with the protection function for the children operation as claimed in claim 3, wherein the latch (17) is engaged with a rack part connected in the slot (11), the handle (15) is fixedly connected to the outer side of the connecting sleeve (14), the handles (15) are symmetrically arranged at two sides of the connecting sleeve (14), and the connecting sleeve (14) is provided with an observation window in a direction perpendicular to the handle (15).

8. The limb fixing device with the protection function for the children operation as claimed in claim 3, wherein the telescopic rod (9) comprises an upper sliding plate (901) and a bottom plate (902), one end of the bottom plate (902) is rotatably connected in the rotary table (801), the second support rod (13) is rotatably connected to the lower surface of the bottom plate (902), and the upper sliding plate (901) is connected above the bottom plate (902) in an electrically controlled sliding manner.

9. The limb fixation device with protection function for children's operation as claimed in claim 1, wherein the method for using the limb fixation device comprises the following steps:

the method comprises the following steps: the panel (1) and the splint (2) are respectively arranged at the upper end and the lower end of the operating bed, the rocker (401) is rotated to drive the turntable (4) to rotate, and the turntable (4) drives the inhaul cable (3) to be wound when rotating, so that the inhaul cable (3) drives the splint (2) to ascend and is clamped at one side of the operating bed in a matching way with the panel (1);

step two: the pulling plate (703) is pulled, so that the pulling plate (703) drives the fixture block (701) to slide through the connecting rod (702), the fixture block (701) is separated from the fluted disc (803), the rotary table (801) is rotated, the rotary table (801) drives the extension shaft (804) to rotate, the extension shaft (804) drives the limiting block (805) to extrude the pawl (501), and the stability of the ratchet (5) is ensured;

step three: the pulling plate (703) is loosened, the locking mechanism (7) is reset, the clamping teeth (17) are moved to be clamped at the position in the clamping groove (11), the connecting sleeve (14) is rotated to adjust the elevation angle of the telescopic rod (9) to a proper position, the telescopic rod (9) is controlled to stretch, and the adjustment of the position of the binding ring (18) is completed.

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