Temporary fracture fixation device for surgical emergencies

Abstract

The application provides a temporary fracture fixing device for surgical emergency, and relates to the technical field of emergency surgery, which comprises a support, a curved support assembly, a binding assembly and a gauze roll, the gauze roll is rollingly connected with the inner cavity of the binding assembly, the curved support assembly is rotationally connected with the support, is used for supporting a fractured limb and adjusting the support angle and height, and the gauze roll comprises a roller, a gear, a roller shaft, a one-way bearing II and a constant force torsional spring, the gear is connected with the roller shaft through the one-way bearing II, and the two ends of the constant force torsional spring are connected with the roller shaft and the roller respectively; the support bending angle and the overall length of the support can be quickly adjusted through the angle assembly, the support and the fixing plate, the gasket cylinder is suitable for different fracture sites through the insertion of the wedge disc and the one-way bearing, can be one-way self-locked to support, the secondary injury is avoided through the upper ring and the lower ring, and the winding tension of the gauze can be self-limitingly constrained in the physiological safe range through the constant force torsional spring and the one-way bearing II in the gauze roll.

Description

Technical Field

[0001] This invention relates to the field of emergency surgery technology, and in particular to a temporary fracture fixation device for emergency surgery. Background Technology

[0002] Emergency surgery is a clinical department specializing in trauma emergency care. The emergency green channel provides patients with fast, professional, and excellent technical skills and services from their arrival at the emergency room to surgery, facilitating timely treatment for patients with more urgent symptoms or sudden illnesses. Major injuries to any part of the body fall under the scope of emergency surgery. When transporting patients with fractures caused by limb injuries in the emergency room, temporary fixation devices can be used to prevent secondary injuries to the fracture patients during transportation.

[0003] Chinese patent CN210408793U discloses a trauma orthopedic bandage wrapping device. This patent relates to the field of medical device technology. A rotating plate is rotatably arranged inside a fixing ring. An internal gear is fixedly arranged around the front sidewall of the rotating plate inside the fixing ring. A gear is fixedly sleeved at the rear end of the rotating shaft, and the lower side of the gear meshes with the internal gear. A scroll is vertically rotatably mounted on one side of the rear sidewall of the rotating plate via a bearing, and a bandage roll is fixedly sleeved on the scroll. Several guide wheels are rotatably arranged on the rear sidewall of the rotating plate below the scroll via an axle. A tensioning wheel is arranged between the guide wheels, and a telescopic rod is fixedly connected to the lower side of the tensioning wheel's seat. The bandage is sequentially wrapped around the outer walls of the guide wheels and the tensioning wheel. When a patient's limbs are injured, this device helps medical personnel to bandage and fix the injured area. It is simple to operate, greatly improves the work efficiency of medical personnel, and prevents the bandage from becoming loose.

[0004] However, the aforementioned patent has a desktop base structure, which only allows the patient to insert their limb into the support ring before the bandage can be fully wrapped. At the same time, it cannot support or limit the fracture ends. During use, the patient's limb is prone to secondary displacement of the fracture ends. In addition, the tension of the bandage roll is controlled by a tension wheel, which is a passive mechanical contact. During use, the binding tension is adjusted by the travel of the telescopic rod, which can easily lead to medical risks such as excessive binding and compression of blood vessels and nerves. Summary of the Invention

[0005] To address the existing technical problems of failing to support and limit fracture ends, which easily leads to secondary displacement of fracture ends, and passive mechanical contact easily causing excessively tight binding that compresses blood vessels and nerves, this invention provides a temporary fracture fixation device for surgical emergencies.

[0006] The technical solutions provided by the embodiments of the present invention are as follows: This invention provides a temporary fracture fixation device for surgical emergencies, comprising a bracket, a bending support assembly, a binding assembly, and a gauze roll. The gauze roll is rolled within the binding assembly. The bending support assembly is rotatably connected to the bracket to support the fractured limb and adjust and lock the support angle and height; The gauze roll includes: a roller, a gear, a roller shaft, a second one-way bearing, and a constant force torsion spring. The gear and the roller shaft are connected through the second one-way bearing, and the two ends of the constant force torsion spring are respectively connected to the roller shaft and the roller shaft. The binding assembly includes an upper ring and a lower ring that are hinged to each other at one end and detachably connected at the other end. When they are put together, they form a complete coaxial ring. Both rings have a fixed outer gear ring in their inner cavity and are rotatably connected to an inner gear ring. The inner gear ring and the outer gear ring mesh with a gear at the same time.

[0007] Preferably, one end of the bracket is fixedly connected to a fixing plate, and the other end is slidably connected to another fixing plate. The middle position of the bracket is rotatably hinged. An angle component is provided on one side of the bracket. The surface of the bracket is provided with an elastic cloth, and the two ends of the elastic cloth are fixedly connected to the two ends of the bracket.

[0008] Preferably, the angle assembly includes an adjusting cylinder and a connecting block. The side of the connecting block is rotatably connected to the fixed plate, and a screw is fixedly connected to the surface of the connecting block. The two screws rotate in opposite directions, and the inner cavity of the adjusting cylinder is threadedly connected to both screws simultaneously.

[0009] Preferably, the bending support assembly includes a pad and a one-way bearing. Both ends of the pad are hinged with rotating plates, and the other end of the rotating plate is slidably connected to a guide rod. One end of one guide rod is fixedly connected to a wedge plate, and the other guide rod is rotatably connected to the bracket. The wedge plate is slidably connected to the inner wall of the bracket. A spring is sleeved on the surface of the guide rod. One end of the spring is fixedly connected to the wedge plate, and the other end is fixedly connected to the rotating plate. In the initial state, the spring is in a compressed state.

[0010] Preferably, the one-way bearing is located in the inner cavity of the hinge on one side of the bracket. The width of the inner cavity is greater than the sum of the widths of the one-way bearing and the wedge. The outer side of the one-way bearing is fixedly connected to the bracket, and a slot is provided on the inner side. The wedge is inserted into the slot, and a button is fixedly connected at the middle position of the wedge. The button passes through the bracket and is slidably connected to it.

[0011] Preferably, the lower ring is fixedly connected to the fixing plate, and both the lower ring and the upper ring are provided with binding cavities. Guide grooves are provided on both sides of the binding cavities. The outer gear ring is fixedly connected to the inner wall of the guide groove, and the inner gear ring is rotatably connected to the guide groove. Both the inner gear ring and the outer gear ring are semi-circular. The inner and outer gear rings of the upper ring are inserted into the inner and outer gear rings of the lower ring, and the tooth surfaces are continuous.

[0012] Preferably, the gauze roll is detachably installed in the binding assembly, the starting end of the gauze roll is fixed to the surface of the roller, the gauze roll is wound around the surface of the roller, a roller is sleeved inside the roller, both ends of the roller are tactilely connected to the guide groove, a pressure-sensitive strip is integrally connected inside the gauze roll, and the gauze roll is located in the binding cavity.

[0013] Preferably, one end of the roller is fixedly connected to the inner wall of the one-way bearing, the gear is fixedly connected to the outer wall of the one-way bearing, the other end of the roller passes through the drum and is rotatably connected to the drum, a constant force torsion spring is provided between the roller and the drum, the inner wall of the constant force torsion spring is rubbed with the roller, and the outer end is engaged with the inner wall of the drum.

[0014] Preferably, an air cushion plate is detachably installed on the inner side of the lower ring, and the free end of the gauze roll is fixedly connected to the lower end of the air cushion plate.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: 1. By using angle components in conjunction with the bracket and fixation plate, the bending angle and overall length of the bracket can be quickly adjusted, making it easy to use. At the same time, the height and angle of the pad can be easily adjusted through the insertion of the wedge plate and the one-way bearing, making it suitable for fracture sites in different states. It can also provide one-way self-locking support using the patient's own weight.

[0016] 2. The separation of the upper and lower rings facilitates the insertion of the gauze into the fracture site, thus avoiding secondary damage. The two rings can be fastened together to simultaneously move the inner and outer toothed rings. At the same time, the constant force torsion spring and one-way bearing inside the gauze roll can self-limit the tension of the gauze wrapping within a physiologically safe range, so that medical staff do not need to actively control the amount of force applied, avoiding excessive binding and compression of nerves and blood vessels. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the supporting component structure of the present invention; Figure 3 This is a schematic diagram of the binding component structure of the present invention; Figure 4 This is a schematic diagram of the binding cavity structure of the present invention; Figure 5 This is a schematic diagram of the internal gear ring structure of the present invention; Figure 6 This is a schematic diagram of the gauze roll structure of the present invention.

[0019] Reference numerals: 1. Bracket; 2. Fixing plate; 3. Angle assembly; 31. Connecting block; 32. Screw; 33. Adjusting cylinder; 4. Bending support assembly; 41. Pad cylinder; 42. Rotating plate; 43. One-way bearing I; 44. Button; 45. Wedge plate; 46. Guide rod; 47. Spring; 5. Elastic cloth; 6. Binding assembly; 61. Upper ring; 62. Lower ring; 63. External gear ring; 64. Internal gear ring; 65. Binding cavity; 66. Guide groove; 7. Gauze roll; 71. Roller; 72. Gear; 73. Roller; 74. One-way bearing II; 75. Constant force torsion spring; 76. Pressure-sensitive strip; 8. Air cushion plate.

[0020] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0021] The technical solutions of the present invention will now be described with reference to the accompanying drawings. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0022] like Figures 1 to 6 As shown, an embodiment of the present invention provides a temporary fixation device for fractures in surgical emergency, comprising: a bracket 1, a bending support component 4, a binding component 6, and a gauze roll 7. The gauze roll 7 is rolledly connected to the inner cavity of the binding component 6. By sliding the gauze roll 7 along the inner cavity of the binding component 6, the fracture site and fixation position of the patient can be bound and fixed. One end of the bracket 1 is fixedly connected to a fixation plate 2, and the other end is slidably connected to another fixation plate 2 via a damping slide plate. At this time, the distance between the end of the fixation plate 2 and the bracket 1 can be adjusted to adapt to fractures in different locations. The middle position of the bracket 1 is rotatably hinged, and the whole structure is foldable, thus adapting to different parts. When it is necessary to fix the arm, the bracket 1 can be folded to a suitable angle to adapt to the curve of the arm. When it is necessary to fix the leg, the bracket 1 should be as straight as possible. In the initial state, the two ends of the bracket 1 have a certain angle and are V-shaped, which facilitates subsequent angle adjustment. An angle component 3 is provided on one side of the bracket 1, and an elastic cloth 5 is provided on the surface of the bracket 1. The elastic cloth 5 can provide overall support for the fracture site to avoid suspension. The two ends of the elastic cloth 5 are fixedly connected to the two ends of the bracket 1.

[0023] The angle assembly 3 is used to adjust and fix the angle of the patient's stent 1. It mainly includes an adjusting cylinder 33 and a connecting block 31. The side of the connecting block 31 is rotatably connected to the fixing plate 2. The surface of the connecting block 31 is fixedly connected with screws 32. The two screws 32 rotate in opposite directions. The inner cavity of the adjusting cylinder 33 is threadedly connected to both screws 32. When it is necessary to adjust the angle of the stent 1, the adjusting cylinder is rotated directly. At this time, the screws 32 at both ends gradually approach each other, thereby pulling the two ends of the stent 1 to rotate through the fixing plate 2, thereby adjusting the angle of the stent 1. At the same time, medical staff can also press the stent 1 to keep its angle unchanged, thereby causing the fixing plate 2 and the stent 1 to slide relative to each other. The single rotation input of the adjusting cylinder 33 is synchronously converted into a dual output of the bending angle and the overall length of the stent 1. The dual output can be switched between angle-priority adjustment and length-priority adjustment according to the external constraints applied by medical staff, which is convenient for on-site modification.

[0024] The bending support assembly 4 includes a pad 41 and a one-way bearing 43. The surface of the pad 41 is made of a flexible sponge-like material, which is soft and can support the flexed parts of the patient's limbs, such as the popliteal fossa of the knee joint. The pad 41 is also hollow and arc-shaped, with its inner surface conforming to the elbow joint to accommodate various situations. Rotating plates 42 are hinged to both ends of the pad 41, and guide rods 46 are slidably connected to the other end of the rotating plates 42. One hexagonal guide rod 46 has a wedge plate 45 fixedly connected to one end, while the other cylindrical guide rod 46 is rotatably connected to the support 1. At this time, the rotating plates 42 can drive the pad 41 to rotate, and the wedge plate 45 and the inner surface of the support 1... The wall is slidably connected, and a spring 47 is sleeved on the surface of the guide rod 46. One end of the spring 47 is fixedly connected to the wedge plate 45, and the other end is fixedly connected to the rotating plate 42. In the initial state, the spring 47 is in a compressed state. At this time, the wedge plate 45 can slide and rotate in the bracket 1. When the wedge plate 45 is inserted with the one-way bearing 43, the pad 41 can only rotate in one direction. At this time, the medical staff rotates the pad 41 to make it fit against the patient's popliteal fossa to support it. At this time, the rotating plate 42 is tilted. The pressure of the patient's leg on the pad 41 will force the rotating plate 42 to rotate in the opposite direction, but it cannot rotate under the action of the one-way bearing 43, thus producing a support effect.

[0025] One-way bearing 43 is located in the inner cavity of the hinge on one side of the bracket 1. The width of the inner cavity is greater than the sum of the widths of one-way bearing 43 and wedge plate 45, thus ensuring that wedge plate 45 can be completely detached from one-way bearing 43. The outer side of one-way bearing 43 is fixedly connected to the bracket 1, and a slot is provided on the inner side. Wedge plate 45 is inserted into the slot. A button 44 is fixedly connected to the middle position of wedge plate 45. Button 44 passes through the bracket 1 and is slidably connected to it. When button 44 is pressed, button 44 drives wedge plate 45 to slide away from one-way bearing 43. At this time, spring 47 is further compressed. After detachment, wedge plate 45 can rotate freely. At this time, pad 41 can rotate in the opposite direction, thereby adjusting the angle and height of pad in the opposite direction. When button 44 is released, wedge plate 45 is reinserted into one-way bearing 43 under the action of spring 47, thus allowing for unidirectional adjustment and support again. The bending support component 4 in two different states can provide support for the arm or thigh, and the angle is also easy to adjust, making it suitable for various degrees of bending.

[0026] The binding component 6 is mainly used for bandaging and fixing the fracture site of the patient. It mainly includes two upper rings 61 and lower rings 62, which are hinged to each other at one end. The other ends of the two are quickly and effectively locked together by common buckles, thus forming a complete ring. The lower ring 62 is fixedly connected to the fixation plate 2. Both the lower ring 62 and the upper ring 61 have binding cavities 65, which facilitate the binding of gauze. Guide grooves 66 are opened on both sides of the binding cavity 65. The outer toothed ring 63 is fixedly connected to the inner wall of the guide groove 66, and the inner toothed ring... 64 is rotatably connected to the guide groove 66. At the same time, the surface of the inner gear ring 64 is provided with a zero mark, so as to determine whether it has been reset. Both the inner gear ring 64 and the outer gear ring 63 are semi-circular. The inner gear ring 64 and the outer gear ring 63 of the upper ring 61 are inserted into the inner gear ring 64 and the outer gear ring 63 of the lower ring 62 and the tooth surfaces are continuous. When the upper ring 61 and the lower ring 62 are combined, the two outer gear rings 63 and the two inner gear rings 64 will also form two complete gear rings. At this time, medical staff can quickly rotate the inner gear ring 64 through the anti-slip texture on the surface of the inner gear ring 64.

[0027] The gauze roll 7 is replaceably disposed within the binding assembly 6. The gauze roll 7 is detachably installed within the binding assembly 6. The starting end of the gauze roll 7 is fixed to the surface of the roller 71. The gauze roll 7 is wound around the surface of the roller 71. A roller 73 is sleeved inside the roller 71. Both ends of the roller 71 are tactilely connected to the guide groove 66. A pressure-sensitive strip 76 is integrally connected inside the gauze roll 7. The gauze roll 7 is located within the binding cavity 65. One end of the roller 73 is fixedly connected to the inner wall of the one-way bearing 74. The gear 72 is connected to the single... The bearing 74 is fixedly connected to the outer wall of the second bearing. At this time, the second bearing 74 only allows the gear 72 to rotate relative to the roller 73, that is, it can rotate freely in the direction of rotation of the gear 72 corresponding to the unwinding of the yarn roll 7. When rotating in the direction of rotation of the gear 72 corresponding to the winding of the yarn, the gear 72 and the roller 73 are completely locked and rotate synchronously. The other end of the roller 73 passes through the drum 71 and is rotatably connected to it. A constant force torsion spring 75 is provided between the roller 73 and the drum 71. An inner hub is provided at the inner end of the constant force torsion spring 75. The inner hub is coaxially sleeved on the roller 73 and connected by friction. The outer side of the constant force spring 75 is engaged with the roller 71. The friction between the inner hub and the roller 73 can be adjusted by the locking nut inside the inner hub to determine the safety threshold. When the wrapping tension of the gauze exceeds the preset safety threshold, the resistance torque transmitted by the roller 71 to the torsion spring exceeds the preset static friction torque. At this time, the roller 73 and the inner hub slide relative to each other. At this time, the inner and outer ends of the constant force torsion spring 75 no longer produce additional relative displacement, thereby limiting the binding tension and avoiding excessive binding that could cause soft tissue and vascular nerve damage. The gauze roll 7 has an integrally embedded pressure-sensitive strip 76. The pressure-sensitive strip 76 is wrapped around the limb surface with the gauze strip to provide real-time feedback on the binding pressure, making it easier for medical staff to judge the binding status. The inner side of the lower ring 62 is detachably installed with an air cushion plate 8. The air cushion plate 8 can be installed in different shapes according to actual needs. The free end of the gauze roll 7 is fixedly connected to the lower end of the air cushion plate 8 to facilitate bandaging and fixation.

[0028] In actual use, medical staff first adjust the device according to the patient's fracture location. If it is a leg fracture, the support 1 is kept relatively straight. If it is an arm fracture, the support 1 is folded along the middle hinge to fit the curve of the limb. During the process, the adjustment cylinder 33 of the rotation angle component 3 drives the fixing plate 2 to move in opposite directions, thereby adjusting and locking the bending angle of the support 1. Then, the pad 41 of the bending support component 4 is rotated to insert it into the popliteal fossa or elbow joint to support the limb and ensure that the pad 41 will not move backward under the pressure of the patient's limb, thus providing stable support. If the pad 41 is found to be too high and needs to be adjusted in the opposite direction, the button 44 is pressed to disengage the wedge plate 45 from the one-way bearing 43, and then it can be rotated in the opposite direction for adjustment. After releasing the button 44, the support can be restored. At this time, the fracture site can be initially supported by the elastic cloth 5 and the pad 41.

[0029] Then, the upper ring 61 and lower ring 62 of the binding component 6 are fastened together. At this time, the inner gear ring 64 and the outer gear ring 63 form two complete gear rings. The medical staff quickly rotates the inner gear ring 64. At this time, the rotation of the inner gear ring 64 drives the gear 72 to start rotating and revolving synchronously. When the gear 72 rolls, the gear 72 drives the roller 73 to rotate through the one-way bearing 74, which in turn drives the gauze roll 7 to automatically unwind and wrap. During this process, the roller 73 drives the roller 71 to unwind through the constant force torsion spring 75, so that the gauze has a certain tension. When the tension of the gauze wrapping exceeds the preset safety threshold, the roller 71 transmits the tension to the constant force torsion spring. The resistance torque of 75 is greater than the static friction torque between the inner hub and the roller 73. At this time, the two slide relative to each other to avoid excessive binding and damage to soft tissues, blood vessels and nerves. At the same time, medical staff can judge the tightness of fixation by observing the pressure-sensitive strip 76 embedded in the gauze, thereby fixing the fractured limb to the air cushion plate 8. The whole process integrates the four links of limb adaptation, support establishment, bandaging execution and tension protection in the temporary fixation process of fracture into a coherent and low decision-making load emergency action sequence, thereby significantly shortening the fixation operation time and reducing the risk of secondary injury caused by improper human force in pre-hospital emergency or emergency environment.

[0030] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A temporary fracture fixation device for surgical emergency use, characterized in that: It includes a bracket, a bending support assembly, a binding assembly, and a gauze roll, wherein the gauze roll is rotatably connected to the inner cavity of the binding assembly. The bending support assembly is rotatably connected to the bracket to support the fractured limb and adjust and lock the support angle and height; The gauze roll includes: a roller, a gear, a roller shaft, a second one-way bearing, and a constant force torsion spring. The gear and the roller shaft are connected through the second one-way bearing, and the two ends of the constant force torsion spring are respectively connected to the roller shaft and the roller shaft. The binding assembly includes an upper ring and a lower ring that are hinged to each other at one end and detachably connected at the other end. When they are put together, they form a complete coaxial ring. Both rings have a fixed outer gear ring in their inner cavity and are rotatably connected to an inner gear ring. The inner gear ring and the outer gear ring mesh with a gear at the same time.

2. The temporary fracture fixation device for surgical emergency use according to claim 1, characterized in that: One end of the bracket is fixedly connected to a fixing plate, and the other end is slidably connected to another fixing plate. The middle position of the bracket is rotatably hinged. An angle component is provided on one side of the bracket. The surface of the bracket is covered with elastic cloth, and the two ends of the elastic cloth are fixedly connected to the two ends of the bracket.

3. A temporary fracture fixation device for surgical emergency use according to claim 2, characterized in that: The angle assembly includes an adjusting cylinder and a connecting block. The side of the connecting block is rotatably connected to a fixed plate, and a screw is fixedly connected to the surface of the connecting block. The two screws rotate in opposite directions, and the inner cavity of the adjusting cylinder is threadedly connected to both screws simultaneously.

4. A temporary fracture fixation device for surgical emergency use according to claim 1, characterized in that: The bending support assembly includes a pad and a one-way bearing. Both ends of the pad are hinged with rotating plates, and the other end of the rotating plate is slidably connected to a guide rod. One end of one guide rod is fixedly connected to a wedge plate, and the other guide rod is rotatably connected to the bracket. The wedge plate is slidably connected to the inner wall of the bracket. A spring is sleeved on the surface of the guide rod. One end of the spring is fixedly connected to the wedge plate, and the other end is fixedly connected to the rotating plate. In the initial state, the spring is in a compressed state.

5. A temporary fracture fixation device for surgical emergency use according to claim 4, characterized in that: The one-way bearing is located in the inner cavity of the hinge on one side of the bracket. The width of the inner cavity is greater than the sum of the widths of the one-way bearing and the wedge. The outer side of the one-way bearing is fixedly connected to the bracket, and a slot is provided on the inner side. The wedge is inserted into the slot. A button is fixedly connected at the middle position of the wedge. The button passes through the bracket and is slidably connected to it.

6. A temporary fracture fixation device for surgical emergency use according to claim 1, characterized in that: The lower ring is fixedly connected to the fixing plate. Both the lower ring and the upper ring have binding cavities. Guide grooves are provided on both sides of the binding cavities. The outer gear ring is fixedly connected to the inner wall of the guide groove. The inner gear ring is rotatably connected to the guide groove. Both the inner gear ring and the outer gear ring are semi-circular. The inner and outer gear rings of the upper ring are inserted into the inner and outer gear rings of the lower ring, and the tooth surfaces are continuous.

7. A temporary fracture fixation device for surgical emergency use according to claim 6, characterized in that: The gauze roll is detachably installed in the binding assembly. The starting end of the gauze roll is fixed to the surface of the roller. The gauze roll is wound around the surface of the roller. A roller is sleeved inside the roller. Both ends of the roller are tumbling connected to the guide groove. A pressure-sensitive strip is integrally connected inside the gauze roll. The gauze roll is located in the binding cavity.

8. A temporary fracture fixation device for surgical emergency use according to claim 7, characterized in that: One end of the roller is fixedly connected to the inner wall of the one-way bearing, the gear is fixedly connected to the outer wall of the one-way bearing, the other end of the roller passes through the drum and is rotatably connected to the drum, a constant force torsion spring is provided between the roller and the drum, the inner wall of the constant force torsion spring is rubbed with the roller, and the outer end is engaged with the inner wall of the drum.

9. A temporary fracture fixation device for surgical emergency use according to claim 1, characterized in that: An air cushion plate is detachably installed on the inner side of the lower ring, and the free end of the gauze roll is fixedly connected to the lower end of the air cushion plate.

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