Falling-resistant protector for forearm fracture

Abstract

The invention relates to the technical field of fracture protectors, and discloses a forearm fracture anti-falling protector which comprises a protector shell and an air bag protection mechanism. The protector shell is cylindrical and can be fixedly arranged on the periphery of the forearm of a patient in a sleeving mode. The air bag protection mechanism is installed on the outer wall of the protector shell, and the air bag protection mechanism is configured in the mode that when the air bag protection mechanism detects that the patient falls down, a protection air bag of the air bag protection mechanism expands and at least wraps the position, corresponding to the fracture part, of the protector shell. According to the forearm fracture anti-falling protector, when a patient falls down forwards, the protection air bag can expand and cover the fracture part of the patient, the fracture part of the patient is effectively buffered and protected, and therefore secondary damage to the fracture part can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fracture protective gear, in particular to a forearm fracture anti-fall protective gear. Background Art

[0002] After a fracture, a brace is usually needed to immobilize the fractured area. For a forearm fracture, a brace is required to completely immobilize the forearm to prevent it from moving or being impacted, which could affect the healing process.

[0003] When a person falls forward, they instinctively stretch their arms forward to try to protect themselves by holding onto the floor. However, patients with forearm fractures cannot use their forearms to support themselves. The protective gear wrapped around their forearms will directly hit the ground. Due to the high hardness of the material, the protective gear cannot effectively cushion and protect the fractured area during a fall, and the fractured area may suffer secondary damage. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problem that a forearm fracture protector cannot effectively protect the fracture site when a patient falls.

[0005] The present invention provides a forearm fracture protection device, comprising a protective device shell and an airbag protection mechanism. The protective device shell is cylindrical and can be securely mounted on the outer periphery of a patient's forearm; the airbag protection mechanism is mounted on the outer wall of the protective device shell. The airbag protection mechanism is configured such that, upon detecting a fall, the protective airbag of the airbag protection mechanism inflates and covers at least the portion of the protective device shell corresponding to the fracture site.

[0006] In some embodiments, the airbag protection mechanism includes a posture sensor and a gas generator, both mounted on the outer wall of the protective gear housing. The posture sensor is signal-connected to the gas generator, and the protective gear housing is equipped with a power supply to power the posture sensor. The posture sensor is capable of detecting the angular velocity of the patient's forearm, and the gas generator is capable of inflating the protective airbag. When the posture sensor detects that the angular velocity of the patient's forearm exceeds a threshold within a preset time, the posture sensor sends an inflation signal to the gas generator, causing the gas generator to inflate the protective airbag.

[0007] In some embodiments, the gas generator includes an detonating shell and an igniter and a gas generator arranged in the detonating shell. The detonating shell can be detachably mounted on the outer wall of the protective gear shell, and the detonating shell is provided with a gas opening that is sealed and connected to the protective airbag. The igniter is connected to the attitude sensor signal; and the igniter can ignite the gas generator so that the gas generator generates a large amount of gas to inflate the protective airbag.

[0008] In some embodiments, the igniter includes an electric heater and ignition charge. The electric heater is connected to the attitude sensor signal. The ignition charge is arranged between the electric heater and the gas generator. The attitude sensor can control the electric heater to ignite the gas generator by igniting the ignition charge.

[0009] In some embodiments, a first accommodating area for accommodating ignition charge and a second accommodating area for accommodating gas generating agent are provided in the detonation shell, and a portion of the first accommodating area extends to the middle of the second accommodating area.

[0010] In some embodiments, the gas generator also includes a first filter element, one end of which is mounted on the inner wall of the detonating shell near the gas opening, and the cavity of the first filter element is connected to the gas opening; the other end of the first filter element is connected to the arc plate through a connecting plate, the arc plate protrudes toward the gas generator, and a gap for gas flow is provided between the four sides of the arc plate and the inner wall of the detonating shell, the part of the connecting plate close to the arc plate is recessed toward the axis of the first filter element, and a plurality of air holes connected to the cavity of the first filter element are provided at the recessed position of the connecting plate.

[0011] In some embodiments, a filter plate is further provided in the cavity of the first filter element, and the filter plate is fixedly connected to the inner wall of the cavity of the first filter element.

[0012] In some embodiments, the outer wall of the protective gear housing is provided with a fixing box adapted to fit the detonator housing, and the detonator housing is detachably mounted in the fixing box. The inner wall of the fixing box is provided with a plurality of clips, and the detonator housing is provided with a plurality of slots, and all the clips are correspondingly engaged with all the slots.

[0013] In some embodiments, the protective gear shell includes an outer shell plate capable of covering a portion of the forearm and an inner shell plate capable of covering another portion of the forearm, one side of the outer shell plate is rotatably connected to one side of the inner shell plate, and the other side of the outer shell plate is detachably connected to the other side of the inner shell plate through multiple connection structures.

[0014] In some embodiments, an arc-shaped opening is provided at one end of the protective gear shell close to the palm, and the arc-shaped opening corresponds to the pisiform bone of the patient's wrist.

[0015] In some embodiments, the outer shell and the inner shell are provided with a plurality of ventilation holes distributed at intervals.

[0016] In some embodiments, the connecting structure includes a block and a clamp, the block is fixedly mounted on the other side of the inner shell plate, the clamp includes two arc-shaped teeth, the two teeth are fixedly mounted on the other side of the outer shell plate and are spaced apart to form a circular bayonet, the block can be detachably engaged in the bayonet, and the end of the tooth facing away from the outer shell plate is provided with a guide block that can guide the block into the bayonet.

[0017] In some embodiments, the forearm fracture protection device further comprises a plurality of straps capable of fastening the outer shell of the device.

[0018] In some embodiments, the protective airbag is compressed and folded in the airbag box in an uninflated state. The airbag box is fixedly connected to the detonating shell. The air inlet of the airbag is connected to the gas opening through the perforation of the airbag box. The top plate of the airbag box facing away from the protective gear shell is provided with a weakened structure to facilitate the inflation and rupture of the protective airbag.

[0019] In some embodiments, the number of protective airbags is three, and the three protective airbags are respectively distributed in the part of the protective gear shell that will contact the ground, the part of the protective gear shell that will contact the chest, and the part of the protective gear shell that will contact the palm; the number of posture sensors and gas generators is three, and each corresponds to the three protective airbags one by one.

[0020] In some embodiments, a fixed airbag is provided on the inner side of the protective gear shell, and the fixed airbag is provided with an inflatable structure allowing inflation and a deflated structure capable of deflation.

[0021] The above technical solution of the present invention has the following beneficial effects: The protective gear shell wraps around the patient's forearm, can fix the fracture site, and help the fracture site heal. The airbag protection mechanism can detect the patient's movement trend. When a fracture patient is about to fall accidentally, the airbag protection mechanism can detect that the patient is about to fall, and quickly activate the protective airbag. After the protective airbag is inflated, it at least covers the patient's fracture site. When the patient falls to the ground, the protective airbag first contacts the ground, providing a buffer for the forearm, which can prevent the patient's fracture site from directly colliding with the ground and reduce the impact force on the forearm. Therefore, the forearm fracture anti-fall protective gear of the present invention can inflate the protective airbag and cover the patient's fracture site when the patient falls forward, providing effective buffering and protection for the patient's fracture site, thereby avoiding secondary damage to the fracture site. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of a forearm fracture protection device according to an embodiment of the present invention; Figure 2 is a schematic diagram of the distribution of the connection structure and the winding structure according to an embodiment of the present invention; Figure 3 is a schematic cross-sectional view perpendicular to the length direction of the protective gear shell according to an embodiment of the present invention; Figure 4 is a schematic diagram of a connection structure according to an embodiment of the present invention; Figure 5 is a schematic diagram of a fixing box according to an embodiment of the present invention; Figure 6 1 is a schematic diagram of the connection between an airbag box and a gas generator according to an embodiment of the present invention; Figure 7 1 is a schematic diagram of a layer plate of an air bag box according to an embodiment of the present invention; Figure 8 1 is a schematic diagram of the installation of a protective airbag and a gas generator according to an embodiment of the present invention; Figure 9 is a schematic diagram of the connection between the attitude sensor and the gas generator according to one embodiment of the present invention; Figure 10 is a schematic diagram of a protective airbag popping out according to an embodiment of the present invention; Figure 11 Schematic diagram of the internal structure of a gas generator according to an embodiment of the present invention.

[0023] Description of Reference Numerals 1. Protective gear shell; 11. Inner shell plate; 12. Outer shell plate; 13. Rotating shaft; 14. Connecting structure; 141. Clamping block; 142. Clamping hoop; 1421. Clamping teeth; 143. Strap; 144. Guide block; 15. Arc-shaped opening; 2. Airbag protection mechanism; 21. Protective airbag; 211. Airbag box; 212. Weakening structure; 22. Inflatable structure; 221. Attitude sensor; 2211. Conductive plug; 222. Gas generator; 223. Detonator shell; 2231. Desiccant; 2232. Filter plate; 2233. Conductive socket; 224. Igniter; 2241. Electric heater; 2242. Ignition charge; 225. Gas generator; 226. Fixing box; 227. Clamping strip; 228. Clamping slot; 229. Gas opening; 3. First filter element; 31. Arc plate; 32. Connecting plate; 33. Air hole. DETAILED DESCRIPTION

[0024] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0025] like Figure 1As shown, the present invention provides a forearm fracture protection device, comprising a protective device shell 1 and an airbag protection mechanism 2. The protective device shell 1 is cylindrical and can be securely mounted on the outer periphery of a patient's forearm; the airbag protection mechanism 2 is mounted on the outer wall of the protective device shell 1. When the airbag protection mechanism 2 detects a patient falling, the protective airbag 21 of the airbag protection mechanism 2 inflates and covers at least the portion of the protective device shell 1 corresponding to the fracture site.

[0026] Specifically, the protective gear shell 1 wraps around the patient's forearm, can fix the fracture site, and help the fracture site heal. The airbag protection mechanism 2 can detect the patient's movement trend. When a fracture patient is about to fall accidentally, the airbag protection mechanism 2 can detect that the patient is about to fall, and then quickly activate the protective airbag 21. After the protective airbag 21 is inflated, it at least covers the patient's fracture site. When the patient falls to the ground, the protective airbag 21 first contacts the ground, providing a buffer for the forearm, which can prevent the patient's fracture site from directly colliding with the ground and reduce the impact force on the forearm. Therefore, the forearm fracture anti-fall protective gear of the present invention can cause the protective airbag 21 to inflate and cover the patient's fracture site when the patient falls forward, effectively buffering and protecting the patient's fracture site, thereby avoiding secondary damage to the fracture site.

[0027] In some embodiments of the present invention, the airbag protection mechanism 2 includes a posture sensor 221 and a gas generator 222, both of which are mounted on the outer wall of the protective gear housing 1. The posture sensor 221 is signal-connected to the gas generator 222, and the protective gear housing 1 is provided with a power supply for the posture sensor 221. The posture sensor 221 is capable of detecting the angular velocity of the patient's forearm, and the gas generator 222 is capable of inflating the protective airbag 21. When the posture sensor 221 detects that the angular velocity of the patient's forearm exceeds a threshold within a preset time, the posture sensor 221 sends an inflation signal to the gas generator 222, causing the gas generator 222 to inflate the protective airbag 21.

[0028] Specifically, the posture sensor 221 detects changes in the angular velocity of the fractured forearm. When the patient is in normal motion, the angular velocity of the fractured forearm is relatively stable. When the angular velocity exceeds a threshold within a preset time, indicating that the patient is about to fall, the posture sensor 221 immediately sends an inflation signal to the gas generator 222, which inflates the protective airbag 21, causing it to expand and wrap around the patient's forearm.

[0029] In some embodiments of the present invention, the gas generator 222 includes an igniter shell 223 and an igniter 224 and a gas generator 225 arranged in the igniter shell 223. The igniter shell 223 can be detachably mounted on the outer wall of the protective gear shell 1, and the igniter shell 223 is provided with a gas opening 229 that is sealed and connected to the protective airbag 21. The igniter 224 is signal-connected to the posture sensor 221; and the igniter 224 can ignite the gas generator 225 so that the gas generator 225 generates a large amount of gas to inflate the protective airbag 21.

[0030] Specifically, when the posture sensor 221 determines that the patient is about to fall, it sends an inflation signal to the gas generator 222, causing the igniter 224 to ignite the gas generator 225, generating a large amount of gas to be filled into the protective airbag 21.

[0031] It should be noted that the gas generating agent 225 may be at least one of sodium azide particles, ammonium nitrate (NH4NO3) particles and basic magnesium carbonate particles, or other suitable compounds, which is not limited in the present invention.

[0032] In some embodiments of the present invention, the igniter 224 includes an electric heater 2241 and an ignition charge 2242. The electric heater 2241 is connected to the attitude sensor 221 signal. The ignition charge 2242 is arranged between the electric heater 2241 and the gas generator 225. The attitude sensor 221 can control the electric heater 2241 to ignite the gas generator 225 by igniting the ignition charge 2242.

[0033] In some embodiments, the electric heater 2241 has its own independent power supply. When the igniter 224 receives the inflation signal, the independent power supply of the electric heater 2241 supplies power to the electric heater 2241 to generate heat to ignite the ignition charge 2242.

[0034] In other embodiments, the electric heater 2241 is powered by the power supply of the attitude sensor 221. The present invention does not impose any particular limitation on the power consumption of the electric heater 2241.

[0035] In some embodiments of the present invention, the detonation shell 223 is provided with a first accommodating area for accommodating the ignition charge 2242 and a second accommodating area for accommodating the gas generating agent 225, and a portion of the first accommodating area extends to the middle of the second accommodating area.

[0036] Specifically, a portion of the first accommodating area extends to the middle of the second accommodating area, so that the flame of the ignition powder 2242 can contact more with the gas generator 225 after ignition, thereby enabling the gas generator 225 to burn and decompose faster to generate gas.

[0037] In some embodiments, the shape of the individual particles of the gas generating agent 225 is set to be pyramidal, so that there is more air between the individual particles of the gas generating agent 225, so as to facilitate rapid and complete combustion.

[0038] In some embodiments, a desiccant 2231 is provided on the inner wall of the detonating shell 223 for keeping the detonating shell 223 dry.

[0039] like Figure 11 As shown, in some embodiments of the present invention, the gas generator 222 also includes a first filter element 3, one end of the first filter element 3 is installed on the inner wall of the detonating shell 223 at one end close to the gas opening 229, and the cavity of the first filter element 3 is connected to the gas opening 229; the other end of the first filter element 3 is connected to the arc plate 31 through the connecting plate 32, and the arc plate 31 protrudes toward the gas generator 225. A gap for gas flow is provided between the four sides of the arc plate 31 and the inner wall of the detonating shell 223, and the part of the connecting plate 32 close to the arc plate 31 is recessed toward the axis of the first filter element 3, and a plurality of air holes 33 connected to the cavity of the first filter element 3 are provided at the recessed position of the connecting plate 32.

[0040] Specifically, when the gas generant 225 burns, the generated airflow flows toward the gas opening 229. It first collides with the curved plate 31, which diverts the airflow. The airflow then flows along the curved plate 31 toward the gap between it and the inner wall of the detonator housing 223, and then enters the cavity of the first filter element 3 through the air holes 33 of the connecting plate 32. During this process, debris produced by the combustion of the gas generant 225 carried by the airflow is blocked on the surface of the curved plate 31 facing the gas generant 225, thus cleansing the airflow entering the protective airbag 21. Furthermore, the air holes 33 are positioned away from the direction of the airflow, further preventing combustion debris from entering the air holes 33.

[0041] In some embodiments of the present invention, a filter plate 2232 is further provided in the cavity of the first filter element 3. The filter plate 2232 is fixedly connected to the inner wall of the cavity of the first filter element 3. The filter plate 2232 can play a secondary filtering role to prevent debris from entering the gas opening 229.

[0042] like Figure 5 As shown, in some embodiments of the present invention, the outer wall of the protective gear housing 1 is provided with a fixing box 226 adapted to the detonating housing 223, and the detonating housing 223 is detachably mounted in the fixing box 226. The inner wall of the fixing box 226 is provided with a plurality of clamping strips 227, and the detonating housing 223 is provided with a plurality of clamping slots 228, and all the clamping strips 227 are clamped in a one-to-one correspondence with all the clamping slots 228.

[0043] like Figure 9As shown, specifically, after the gas generator 222 is used, the gas generator 222 can be pulled out from the fixing box 226 , and then replaced with a new gas generator 222 , and the new gas generator 222 is connected to the attitude sensor 221 by signal.

[0044] In some embodiments, the attitude sensor 221 is provided with a conductive plug 2211, and the detonator housing 223 is provided with a conductive socket 2233. The conductive socket 2233 is electrically connected to the igniter 224. The conductive plug 2211 can be inserted into the conductive socket 2233 to achieve a conductive connection between the two. The conductive plug 2211 is pluggable and connected to the conductive socket 2233 through an opening in the fixing box 226. When replacing the gas generator 222, the conductive plug 2211 is removed from the conductive socket 2233 of the used gas generator 222 and then inserted into the conductive socket 2233 of the replaced gas generator 222.

[0045] like Figure 2 As shown, in some embodiments of the present invention, the protective gear shell 1 includes an outer shell plate 12 capable of covering a portion of the forearm and an inner shell plate 11 capable of covering another portion of the forearm, one side of the outer shell plate 12 is rotatably connected to one side of the inner shell plate 11, and the other side of the outer shell plate 12 is detachably connected to the other side of the inner shell plate 11 via a plurality of connecting structures 14.

[0046] Specifically, when wrapping the patient's forearm with the protective gear shell 1, the outer shell plate 12 and the inner shell plate 11 are rotated away from the interior of the protective gear shell 1. The opening between the other side of the outer shell plate 12 and the other side of the inner shell plate 11 becomes larger, and the patient's forearm is placed into the protective gear shell 1 through this opening. The outer shell plate 12 and the inner shell plate 11 are then rotated toward the interior of the protective gear shell 1 to close the opening. Finally, multiple connecting structures 14 are used to connect the other side of the outer shell plate 12 to the other side of the inner shell plate 11. When the patient recovers, the forearm can be removed from the protective gear shell 1 by simply opening all the connecting structures 14. The connecting structures 14 can be snap fasteners or Velcro fasteners, etc. In some embodiments, the protective gear shell 1 can be made using 3D printing technology; during production, the shape of the protective gear shell 1 can be customized according to the condition of each patient's forearm so that the protective gear shell 1 can better fix the patient's fracture site.

[0047] In some embodiments, one side of the outer shell plate 12 is rotatably connected to one side of the inner shell plate 11 via a plurality of rotating shafts 13 .

[0048] In some embodiments of the present invention, an arc-shaped opening 15 is provided at one end of the protective gear shell 1 close to the palm, and the arc-shaped opening 15 corresponds to the pisiform bone of the patient's wrist.

[0049] Specifically, the protective gear shell 1 secures the patient's forearm and wrist together. Since the protective gear shell 1 is usually made of a relatively hard material, the patient's pisiform bone at the wrist is easily compressed and rubbed by the protective gear shell 1 when wearing the protective gear shell 1. The arc-shaped opening 15 provided at the corresponding position of the protective gear shell 1 can expose the pisiform bone, thereby preventing the protective gear shell 1 from compressing the protruding pisiform bone at the wrist, thereby making the patient more comfortable when wearing the protective gear shell 1.

[0050] In some embodiments of the present invention, the outer shell plate 12 and the inner shell plate 11 are provided with a plurality of ventilation holes distributed at intervals.

[0051] Specifically, a plurality of ventilation holes are provided on the protective gear shell 1 to help dissipate the heat generated by the patient's forearm, thereby preventing the patient's forearm from being wrapped for a long time and causing discomfort due to excessive humidity.

[0052] In some embodiments of the present invention, the connecting structure 14 includes a block 141 and a clamp 142. The block 141 is fixedly installed on the other side of the inner shell plate 11. The clamp 142 includes two arc-shaped teeth 1421. The two teeth 1421 are fixedly installed on the other side of the outer shell plate 12 and are spaced apart to form a circular bayonet. The block 141 can be detachably engaged in the bayonet. The end of the tooth 1421 facing away from the outer shell plate 12 is provided with a guide block 144 that can guide the block 141 to engage in the bayonet.

[0053] Specifically, after the patient's forearm is placed inside the protective gear shell 1, the outer shell plate 12 and the inner shell plate 11 are closed inwards, and the block 141 is inserted into its corresponding slot. Figure 4 As shown, in the direction perpendicular to the length of the protective gear shell 1, the gap formed between the tops of the two latch teeth 1421 is smaller than the maximum width of the block 141, and the bottom of the block 141 is downwardly engaged in the slot from the gap between the tops of the two latch teeth 1421. The guide block 144 on the latch teeth 1421 helps the block 141 enter the slot.

[0054] In some embodiments, the clamping block 141 further includes a connecting arm and a locking ball. One end of the connecting arm is connected to the inner shell 11, and the other end is connected to the locking ball. The locking ball can be locked between two locking teeth 1421. One of the locking teeth 1421 near the inner shell 11 has a thickened portion. When the clamping block 141 is locked into the latch, the thickened portion provides support and reinforcement, allowing the locking tooth 1421 to withstand greater pressure.

[0055] like Figure 3 As shown, in some embodiments of the present invention, the forearm fracture protection device further includes a plurality of straps 143 capable of binding the protective device shell 1 .

[0056] Specifically, the plurality of straps 143 are tied around the outer wall of the protective gear shell 1 to reinforce the connection between the outer shell plate 12 and the inner shell plate 11 .

[0057] like Figure 6 As shown in some embodiments of the present invention, the protective airbag 21 is compressed and folded in the airbag box 211 in an uninflated state. The airbag box 211 is fixedly connected to the detonator shell 223. The air inlet of the airbag is connected to the gas opening 229 through the perforation of the airbag box 211. The top plate of the airbag box 211 facing away from the protective gear shell 1 is provided with a weakening structure 212 to facilitate the expansion and bursting of the protective airbag 21.

[0058] like Figure 7 、 Figure 8 and Figure 10 As shown, specifically, the airbag box 211 and the detonator shell 223 are mounted on the outer wall of the protective gear housing 1 through a fixing box 226. The air inlet of the protective airbag 21 is connected to the gas opening 229 of the gas generator 222. When the patient falls, the gas generator 222 can quickly fill the protective airbag 21 with gas, causing the protective airbag 21 to expand and break through the weakened structure 212 on the top plate of the airbag box 211. The inflated protective airbag 21 covers the patient's forearm to protect it. After the protective airbag 21 is used, the airbag box 211 and the detonator shell 223 can be removed from the fixing box 226, and a new gas generator 222 and airbag box 211 can be installed in the fixing box 226.

[0059] It should be noted that, in this embodiment, the protective airbag 21 , the airbag box 211 and the gas generator 222 are configured as replaceable disposable components.

[0060] In some embodiments, the weakened structure 212 can be configured as weakened grooves cross-distributed on the top plate. In other embodiments, the weakened structure 212 can be configured as a flexible film that can be broken through by the protective airbag 21.

[0061] In some embodiments of the present invention, the number of protective airbags 21 is three, and the three protective airbags 21 are respectively distributed in the part of the protective gear shell 1 that will contact the ground, the part of the protective gear shell 1 that will contact the chest, and the part of the protective gear shell 1 that will contact the palm; the number of posture sensors 221 and gas generators 222 are both three, and each corresponds one-to-one to the three protective airbags 21.

[0062] Specifically, when the patient falls, the three protective airbags 21 are inflated and ejected, which can prevent the forearm and palm from directly colliding with the ground, and can prevent the patient's chest from hitting the protective gear shell 1.

[0063] In some embodiments of the present invention, a fixed airbag is provided inside the protective gear shell 1 , and the fixed airbag is provided with an inflation structure 22 that allows inflation and a deflation structure that allows deflation.

[0064] Specifically, when a patient with a fracture is immobilized using the protective gear shell 1, the muscles become swollen. Once the swelling subsides, a gap forms between the inner wall of the protective gear shell 1 and the outer periphery of the forearm. Filling this gap with the inflatable structure 22 can better immobilize the patient's forearm and accelerate the healing of the fracture. When the patient is released from the protective gear shell 1, the gas in the inflatable structure 22 can be released through the deflation structure. The inflatable structure 22 and the deflation structure can be any structural form that can achieve their respective functions, and the present invention is not limited thereto.

[0065] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A forearm fracture protection device, characterized in that: It includes a protective gear shell (1) and an airbag protection mechanism (2); The protective gear shell (1) is configured to be cylindrical and can be fixedly mounted on the outer periphery of the patient's forearm; the airbag protection mechanism (2) is mounted on the outer wall of the protective gear shell (1), and the airbag protection mechanism (2) is configured such that when the airbag protection mechanism (2) detects that the patient has fallen, the protective airbag (21) of the airbag protection mechanism (2) expands and covers at least the position of the protective gear shell (1) corresponding to the fracture site.

2. The forearm fracture protection device according to claim 1, characterized in that: The airbag protection mechanism (2) includes a posture sensor (221) and a gas generator (222), both of which are mounted on the outer wall of the protective gear housing (1); the posture sensor (221) is signal-connected to the gas generator (222); the protective gear housing (1) is provided with a power supply for supplying power to the posture sensor (221); the posture sensor (221) is capable of detecting the angular velocity of the patient's forearm; and the gas generator (222) is capable of inflating the protective airbag (21); When the posture sensor (221) detects that the angular velocity of the patient's forearm exceeds a threshold value within a preset time, the posture sensor (221) sends an inflation signal to the gas generator (222), so that the gas generator (222) inflates the protective airbag (21).

3. The forearm fracture protection device according to claim 2, characterized in that: The gas generator (222) includes an igniter shell (223) and an igniter (224) and a gas generator (225) arranged in the igniter shell (223). The igniter shell (223) can be detachably mounted on the outer wall of the protective gear shell (1), and the igniter shell (223) is provided with a gas opening (229) that is sealed and communicated with the protective airbag (21). The igniter (224) is connected to the posture sensor (221) by signal; and the igniter (224) can ignite the gas generator (225) so that the gas generator (225) generates a large amount of gas to inflate the protective airbag (21).

4. The forearm fracture protection device according to claim 3, characterized in that: The igniter (224) includes an electric heater (2241) and an ignition charge (2242); the electric heater (2241) is connected to the attitude sensor (221) by signal; the ignition charge (2242) is provided between the electric heater (2241) and the gas generator (225); the attitude sensor (221) can control the electric heater (2241) to ignite the ignition charge (2242) and thereby ignite the gas generator (225); Preferably, a first accommodating area for accommodating the ignition charge (2242) and a second accommodating area for accommodating the gas generating agent (225) are provided in the detonation shell (223), and a portion of the first accommodating area extends to the middle of the second accommodating area.

5. The forearm fracture protection device according to claim 4, characterized in that: The gas generator (222) further comprises a first filter element (3), one end of the first filter element (3) being mounted on an inner wall of one end of the detonating shell (223) close to the gas opening (229), and the cavity of the first filter element (3) being in communication with the gas opening (229); the other end of the first filter element (3) being connected to an arc plate (31) via a connecting plate (32), the arc plate (31) being protruding toward the gas generating agent (225), a gap for gas flow being provided around the arc plate (31) and between the inner wall of the detonating shell (223), a portion of the connecting plate (32) close to the arc plate (31) being recessed toward the axis of the first filter element (3), and a plurality of air holes (33) being in communication with the cavity of the first filter element (3) are provided at the recessed position of the connecting plate (32); Preferably, a filter plate (2232) is further provided in the cavity of the first filter element (3), and the filter plate (2232) is fixedly connected to the inner wall of the cavity of the first filter element (3).

6. The forearm fracture protection device according to claim 5, characterized in that: The outer wall of the protective gear shell (1) is provided with a fixing box (226) adapted to the detonating shell (223), and the detonating shell (223) is detachably mounted in the fixing box (226); The inner wall of the fixing box (226) is provided with a plurality of clamping strips (227), and the detonating shell (223) is provided with a plurality of clamping slots (228), and all the clamping strips (227) are clamped with all the clamping slots (228) in a one-to-one correspondence.

7. The forearm fracture protection device according to claim 6, characterized in that: The protective gear shell (1) comprises an outer shell plate (12) capable of covering a portion of the forearm and an inner shell plate (11) capable of covering another portion of the forearm, one side of the outer shell plate (12) being rotatably connected to one side of the inner shell plate (11), and the other side of the outer shell plate (12) being detachably connected to the other side of the inner shell plate (11) via a plurality of connection structures (14); Preferably, an arc-shaped opening (15) is provided at one end of the protective gear shell (1) close to the palm, and the arc-shaped opening (15) corresponds to the pisiform bone of the patient's wrist; Preferably, the outer shell plate (12) and the inner shell plate (11) are provided with a plurality of ventilation holes distributed at intervals.

8. The forearm fracture protection device according to claim 7, characterized in that: The connecting structure (14) includes a clamping block (141) and a clamping hoop (142), wherein the clamping block (141) is fixedly mounted on the other side of the inner shell plate (11), and the clamping hoop (142) includes two arc-shaped clamping teeth (1421), and the two clamping teeth (1421) are fixedly mounted on the other side of the outer shell plate (12) and are spaced apart to form a circular bayonet, wherein the clamping block (141) can be detachably clamped in the bayonet, and an end of the clamping teeth (1421) facing away from the outer shell plate (12) is provided with a guide block (144) capable of guiding the clamping block (141) to be clamped into the bayonet; Preferably, the forearm fracture protection device further comprises a plurality of straps (143) capable of binding the protection device shell (1).

9. The forearm fracture protection device according to claim 8, characterized in that: The protective airbag (21) is compressed and folded in the airbag box (211) in an unexpanded state. The airbag box (211) is fixedly connected to the detonation shell (223). The air inlet of the airbag is connected to the gas opening (229) through a perforation of the airbag box (211). A top plate of the airbag box (211) facing away from the protective gear housing (1) is provided with a weakened structure (212) that facilitates the expansion and bursting of the protective airbag (21); Preferably, the number of the protective airbags (21) is three, and the three protective airbags (21) are respectively distributed on the part of the protective gear shell (1) that contacts the ground, the part of the protective gear shell (1) that contacts the chest, and the part of the protective gear shell (1) that contacts the palm; the number of the posture sensors (221) and the gas generators (222) are both three, and each corresponds to the three protective airbags (21) one by one.

10. The forearm fracture protection device according to claim 9, characterized in that: A fixed airbag is provided on the inner side of the protective gear shell (1), and the fixed airbag is provided with an inflation structure (22) that allows inflation and a deflation structure that can deflate.

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