Orthopedic splint fastening device

Abstract

The invention discloses an orthopedic splint fastening device, and relates to the technical field of medical instruments, the orthopedic splint fastening device comprises a first splint and a second splint which are pivotally connected, the first splint and the second splint can be mutually buckled to fix limbs of a patient, a lock catch assembly is arranged to fix the first splint and the second splint, and convenient assembly and disassembly operation is realized. The first clamping plate and the second clamping plate are each internally provided with a plurality of contact pieces and supporting pipes, when the first clamping plate and the second clamping plate are buckled, a piston of the air storage tank is pushed, air in the air storage tank is injected into the supporting pipes, therefore, the multiple contact pieces are attached to the limbs of a patient, meanwhile, the air storage tank is provided with a first adjusting rod, air pressure adjustment is achieved, and tightness adjustment is achieved. A plurality of air holes are formed in the surface of the contact piece, so that air permeability can be improved, skin inflammation of a patient is avoided, and use experience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an orthopedic splint fastening device. Background Art

[0002] In the related art, after the fracture surgery, the fracture needs to be fixed. In the prior art, the bone is fixed by a splint and then tied by a cable tie. This method is cumbersome to operate during the binding and disassembly. In addition, this fixing method cannot adjust the tightness of the splint, which may cause discomfort to the injured limb of the patient. Furthermore, although a certain fixing effect can be achieved by tying with a splint and a bandage, or applying plaster, the ventilation effect is poor, which is not conducive to the blood circulation of the fracture site, and it is easy to cause skin inflammation, resulting in poor use effect. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an orthopedic splint fastening device, which is easy to assemble and disassemble, can adjust the tightness, has a ventilation effect, and can improve the user experience.

[0004] An orthopedic splint fastening device according to an embodiment of the present invention comprises: A first clamping plate and a second clamping plate are pivotally connected, and both the first clamping plate and the second clamping plate are provided with a covering assembly, and the covering assembly includes a plurality of contact members and a support tube, and a plurality of air holes are provided on the surface of the contact members; The gas storage tank is arranged between the first clamping plate and the second clamping plate, and comprises a tank body and a piston, and the tank body is connected to a plurality of support pipes; A locking assembly, used to fix the first clamping plate and the second clamping plate that are buckled with each other; The first splint and the second splint are rotated and interlocked to form a cavity for covering the patient's limbs, and the contact piece is used to contact the patient's skin. When the first splint and the second splint are rotated and interlocked, they can drive the piston to move, and the gas in the gas tank can be injected into the support tube so that the contact piece presses the patient's limbs; the gas tank is also provided with a first adjusting rod, and the first adjusting rod is used to adjust the position of the piston and the tank body, thereby adjusting the air pressure in the support tube to achieve tightness adjustment.

[0005] An orthopedic splint fastening device according to an embodiment of the present invention has at least the following beneficial effects: This embodiment is provided with a first splint and a second splint that are pivotally connected, and the two can be buckled together to fix the patient's limbs. A locking assembly is provided to fix the first splint and the second splint, so as to achieve convenient assembly and disassembly operations. The first splint and the second splint are both provided with a plurality of contact pieces and a support tube. When the first splint and the second splint are buckled together, the piston of the gas storage tank is pushed, so that the gas in the gas storage tank is injected into the support tube, so that the plurality of contact pieces fit the patient's limbs. At the same time, the gas storage tank is provided with a first adjustment rod to achieve air pressure adjustment, so as to achieve tightness adjustment. A plurality of air holes are provided on the surface of the contact piece, so as to increase air permeability, avoid skin inflammation in patients, and help improve the user experience.

[0006] According to some embodiments of the present invention, the contact piece is provided with a ventilation cavity, the ventilation cavity is connected to the air hole, and the ventilation cavity is arranged through the contact piece.

[0007] According to some embodiments of the present invention, a rotating shaft is provided between the first clamping plate and the second clamping plate, a guide groove is provided on the outer peripheral wall of the rotating shaft, the air storage tank is provided with a driving rod and a pressure plate, the pressure plate is fixed to one end of the driving rod, and the other end of the driving rod is inserted into the guide groove, and the rotating shaft can rotate when the first clamping plate is combined with the second clamping plate, and the guide groove can guide the driving rod to move and make the pressure plate press the piston.

[0008] According to some embodiments of the present invention, the driving rod includes a base section and a threaded section, one end of the base section is inserted into the guide groove, the threaded section and the base section are coaxially arranged, the first adjusting rod is arranged on the driving rod and is threadedly connected with the threaded section, and rotating the first adjusting rod can adjust the screw connection depth between the first adjusting rod and the threaded section to adjust the total length of the driving rod, thereby adjusting the distance between the pressure plate and the tank body to achieve air pressure adjustment.

[0009] According to some embodiments of the present invention, the support tube includes a movable tube and a fixed tube, the movable tube is movably connected to the fixed tube, and the fixed tube and the movable tube can enclose an air storage chamber connected to the air storage tank.

[0010] According to some embodiments of the present invention, a limiting device is provided in the support tube, and the limiting device is provided with a limiting column movably connected to the fixed tube, and the inner circumferential wall of the movable tube is provided with a plurality of limiting holes arranged at intervals along the axial direction of the movable tube. When the air pressure in the support tube increases, the limiting column can move under the action of the air pressure and be plugged into the limiting hole, thereby realizing a fixed relative position between the fixed tube and the movable tube.

[0011] According to some embodiments of the present invention, the limiting device also includes a second adjusting rod and a transmission rod, the end of the transmission rod presses against the outer peripheral wall of the limiting column, the transmission rod is provided with an oblique groove, and the second adjusting rod is provided with a matching rod inserted in the oblique groove. The second adjusting rod can move along the radial direction of the fixed tube, so that the matching rod moves along the oblique groove, so that the transmission rod moves along the axial direction of the fixed tube and presses against the limiting column, thereby increasing the resistance of the limiting column when it moves.

[0012] According to some embodiments of the present invention, the base section is provided with an insertion rod, the insertion rod extends radially along the driving rod, and the insertion rod is inserted into the guide groove.

[0013] According to some embodiments of the present invention, the first clamping plate and the second clamping plate are both provided with a connecting cavity, and the connecting cavity is connected to the gas storage cavity and the gas storage tank, so that the gas in the gas storage tank can enter the gas storage cavity through the connecting cavity.

[0014] According to some embodiments of the present invention, the limiting device is further provided with an elastic member and a pressure contact member, wherein the pressure contact member is mounted on the limiting column, and the elastic member is mounted on the transmission rod, and the transmission rod can push the elastic member so that the elastic member elastically pushes against the pressure contact member.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 An expanded view of an orthopedic splint fastening device according to an embodiment of the present invention; Figure 2 is an axonometric view of the second splint in an embodiment of the present invention; Figure 3 This is an axonometric view of a contact member and a support tube in an embodiment of the present invention; Figure 4 An internal view of a contact member and a support tube in an embodiment of the present invention; Figure 5 for Figure 4 A magnified view of center A; Figure 6 for Figure 4 Magnified view of middle B; Figure 7 It is a schematic diagram of the installation of the gas storage tank in an embodiment of the present invention; Figure 8 This is a schematic diagram of the connection between the gas storage tank and the rotating shaft in an embodiment of the present invention; Fig. 9 A combined view of an orthopedic splint fastening device according to an embodiment of the present invention; Fig.10 for Fig. 9 Enlarged view of middle C; Fig.11 It is an axonometric view of the locking assembly in an embodiment of the present invention.

[0017] Reference numerals: First clamping plate 10; rotating shaft 11; guide groove 12; connecting cavity 13; connecting block 14; second clamping plate 20; The covering component 110; the contact member 111; the ventilation cavity 1111; the air hole 1112; the support tube 112; the movable tube 113; the fixed tube 114; the air storage cavity 115; the limiting device 116; the limiting column 117; the limiting hole 118; the pressure contact member 119; the elastic member 120; the second adjustment rod 121; the transmission rod 122; the inclined groove 123; the matching rod 124; the movable plate 125; the third adjustment rod 126; the first resilient member 127; Gas storage tank 130; tank body 131; piston 132; driving rod 133; base section 1331; threaded section 1332; first adjusting rod 134; pressing plate 135; inserting rod 136; gas delivery pipe 137; second resilient member 138; Locking assembly 140; fastener 141; movable member 142; pin shaft 143; toggle member 144; mounting seat 145; guide shaft 146. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Reference Figure 1In an embodiment of the present invention, an orthopedic splint fastening device includes a first splint 10 and a second splint 20, the first splint 10 and the second splint 20 are pivotally connected, and the first splint 10 and the second splint 20 rotate and engage with each other to form a cavity for covering the patient's limb. Figure 2 and Figure 3 , the inner walls of the first splint 10 and the second splint 20 are both provided with a covering assembly 110, the covering assembly 110 includes a plurality of contact members 111 and a support tube 112, the surface of the contact member 111 has a plurality of air holes 1112, and the contact member 111 has a ventilation cavity 1111, the ventilation cavity 1111 is connected to the air holes 1112, and the ventilation cavity 1111 is arranged through the contact member 111. It can be understood that the contact member 111 is used to contact the patient's skin, and the air holes 1112 and the ventilation cavity 1111 are arranged on the contact member 111 to increase the air permeability, avoid the patient's skin from having a rash or inflammation after being covered for a long time, and help improve the user experience.

[0023] It is understandable that a gas tank 130 is provided between the first clamping plate 10 and the second clamping plate 20. The gas tank 130 includes a tank body 131 and a piston 132. The tank body 131 is provided with a gas pipe 137 for connecting multiple support pipes 112. At the same time, a rotating shaft 11 is provided between the first clamping plate 10 and the second clamping plate 20. A guide groove 12 is provided on the outer peripheral wall of the rotating shaft 11. The guide groove 12 is inclined to the axial direction of the rotating shaft 11. The gas tank 130 is provided with a driving rod 133 and a pressing plate 135. The pressing plate 135 is fixed to one end of the driving rod 133. The other end of the driving rod 133 is inserted into the guide groove 12. Figure 8 , the end of the driving rod 133 is provided with an insertion rod 136, and the insertion rod 136 is inserted into the guide groove 12 along the radial direction of the rotating shaft 11. It can be understood that the second splint 20 is provided with a connecting block 14, the rotating shaft 11 is fixedly connected to the connecting block 14, and when the first splint 10 and the second splint 20 are combined, the rotating shaft 11 can rotate with the second splint 20, and the guide groove 12 can guide the driving rod 133 to move and make the insertion rod 136 move along the axial direction of the rotating shaft 11, so that the driving rod 133 moves along the axial direction of the rotating shaft 11, so that the pressing plate 135 moves and presses the piston 132, and the gas in the gas storage tank 130 is injected into the support tube 112 through the gas pipe 137, so that the contact member 111 presses the patient's skin to achieve the fixation of the patient's limbs. In this process, only the first splint 10 and the second splint 20 need to be closed to realize the inflation process, so that the operation of fixing the patient's limbs is simple.

[0024] Reference Figure 8It can be understood that a second rebound member 138 is provided between the piston 132 and the tank body 131. The second rebound member 138 can move the piston 132 away from the tank body 131 when the first clamping plate 10 and the second clamping plate 20 are opened, thereby resetting the piston 132 and reducing the air pressure in the support tube 112.

[0025] Reference Figure 3 It can be understood that the support tube 112 includes a movable tube 113 and a fixed tube 114. The movable tube 113 is movably connected to the fixed tube 114. The fixed tube 114 and the movable tube 113 can enclose an air storage chamber 115 connected to the air storage tank 130, thereby enabling the contact member 111 to be movable, so that the contact member 111 can stably contact the patient's limbs to ensure stability and comfort.

[0026] It can be understood that there are multiple contact pieces 111 arranged along the circumference of the first splint 10 and the second splint 20. At the same time, there are multiple contact pieces 111 arranged along the axial direction of the first splint 10 and the second splint 20, and each contact piece 111 has a support tube 112 connected to the first splint 10 or the second splint 20, so that the multiple contact pieces 111 can move independently, which is beneficial to improve the contact stability of the covering assembly 110 on the patient's limbs, thereby improving the stabilization effect and comfort of use.

[0027] It is understandable that both the first splint 10 and the second splint 20 are provided with a connecting cavity 13, and the connecting cavity 13 is connected to the gas storage cavity 115 and the gas storage tank 130. Specifically, the connecting cavity 13 is connected to the fixing tube 114, so that the gas in the gas storage tank 130 can enter the gas storage cavity 115 through the connecting cavity 13, so that multiple support tubes 112 are connected to the gas storage tank 130 at the same time, and a uniform gas supply function is achieved. In addition, the gas pressure of multiple support tubes 112 can be balanced, and multiple contact members 111 can be simultaneously attached to the surface of the patient's limbs while improving the gas supply efficiency, so as to achieve a good fixing function and help improve the patient's comfort.

[0028] Reference Fig. 9 and Fig.10 In this embodiment, a locking assembly 140 is provided, and the locking assembly 140 includes a fastener 141 and a movable member 142. The movable member 142 is provided with a pin 143. The movable member 142 is slidably connected to the first splint 10, and the fastener 141 is fixedly installed on the second splint 20. The pin 143 of the movable member 142 can be buckled in the fastener 141, thereby realizing the mutual buckling of the first splint 10 and the second splint 20, so that the first splint 10 and the second splint 20 can be stably covered on the patient's limbs, achieving convenient fixation, which is conducive to improving operational convenience.

[0029] It is understood that the first clamping plate 10 is provided with a mounting seat 145, and the movable member 142 is provided with a guide shaft 146, which can be slidably inserted in the mounting seat 145 to achieve the sliding connection of the movable member 142 in the mounting seat 145. In addition, the movable member 142 is provided with a toggle member 144, and a spring is provided between the guide shaft 146 and the mounting seat 145, and the spring can move the movable member 142 in the direction close to the mounting seat 145. It is understood that a person can pull the toggle member 144 to move the pin 143 in the direction away from the fastener 141, and when the toggle member 144 is released, the movable member 142 tends to move in the direction close to the mounting seat 145, so that the pin 143 is buckled in the fastener 141 to achieve fixation; on the other hand, a person can pull the toggle member 144 to move the pin 143 in the direction away from the fastener 141 to separate the pin 143 from the fastener 141 to achieve the unlocking operation.

[0030] Reference Figure 7 and Figure 8 The driving rod 133 is provided with a first adjusting rod 134, a base section 1331 and a threaded section 1332. The base section 1331 is located at one end of the driving rod 133 close to the rotating shaft 11. The end of the base section 1331 is provided with an insert rod 136 plugged into the guide groove 12. The threaded section 1332 and the base section 1331 are coaxially arranged and fixed to each other. The threaded section 1332 is plugged into the first adjusting rod 134, and the first adjusting rod 134 is threadedly connected with the threaded section 1332. It can be understood that rotating the first adjusting rod 134 can adjust the screw connection depth between the first adjusting rod 134 and the threaded section 1332, so as to adjust the total length of the driving rod 133, thereby adjusting the distance between the pressing plate 135 and the tank body 131, achieving air pressure adjustment, and then adjusting the pressure between the contact piece 111 and the surface of the patient's limb, thereby adjusting the tightness of the package, which is conducive to improving the flexibility of use and improving the comfort of the patient.

[0031] Reference Figure 3 and Figure 4 A limiting device 116 is provided in the support tube 112, and the limiting device 116 is provided with a limiting column 117 movably connected to the fixed tube 114. The inner circumferential wall of the movable tube 113 is provided with a plurality of limiting holes 118 arranged at intervals along the axial direction of the movable tube 113. When the air pressure in the support tube 112 increases, the limiting column 117 can move under the action of the air pressure and be plugged into the limiting hole 118, thereby achieving a fixed relative position between the fixed tube 114 and the movable tube 113, so that the contact piece 111 cannot move. After the patient's limbs are fixed, the contact piece 111 can be located at a determined position, thereby avoiding looseness between the patient's limbs and the embracing and covering component 110, which is beneficial to ensuring the stability of the covering.

[0032] Furthermore, the limiting device 116 further includes a second adjusting rod 121, a third adjusting rod 126, a moving plate 125 and a transmission rod 122. The third adjusting rod 126 is threadedly connected to the inner peripheral wall of the first clamping plate 10 (or the second clamping plate 20). The moving plate 125 is connected to one end of the third adjusting rod 126. When the third adjusting rod 126 is rotated, the moving plate 125 can move along the axial direction of the third adjusting rod 126. The second adjusting rod 121 is slidably connected to the fixed tube 114, and the second adjusting rod 121 can move along the radial direction of the fixed tube 114. The second adjusting rod 121 is fixed to a side of the moving plate 125 away from the third adjusting rod 126, so that the second adjusting rod 121 can be moved when the third adjusting rod 126 is rotated.

[0033] Reference Figure 5 and Figure 6 It can be understood that the second adjustment rod 121 is provided with a matching rod 124, the transmission rod 122 is provided with an oblique groove 123, the matching rod 124 is inserted into the oblique groove 123 along the radial direction of the second adjustment rod 121, and the length direction of the oblique groove 123 is inclined to the axial direction of the second adjustment rod 121. At the same time, an elastic member 120 is provided at the end of the transmission rod 122 away from the second adjustment rod 121, and a pressure contact member 119 is provided on the limit column 117. It can be understood that when the third adjustment rod 126 is rotated, the moving plate 125, the second adjustment rod 121 and the matching rod 124 move along the axial direction of the third adjustment rod 126, and the matching rod 124 moves along the oblique groove 123, so that the transmission rod 122 moves along the axial direction of the fixed tube 114, so that the elastic member 120 elastically pushes against the pressure contact member 119, thereby increasing the resistance of the limit column 117 when moving. Therefore, the movement resistance of the limiting column 117 becomes larger, that is, a larger air pressure needs to be provided so that the limiting column 117 can be pushed to be inserted into the limiting hole 118.

[0034] It is understandable that if the first adjustment rod 134 is adjusted to shorten the total length of the driving rod 133 to squeeze the gas storage tank 130 to provide a higher air pressure, the pressure contact force of the contact piece 111 on the surface of the patient's limb can be increased. Under the premise of higher air pressure, the movement resistance of the limit column 117 is increased so that it is not easily pushed by the air pressure, which can avoid the situation where the contact piece 111 is locked due to the limit column 117 being easily pushed and inserted into the limit hole 118, so that the contact piece 111 can move in the process of increasing the air pressure to fit the surface of the patient's limb, thereby improving stability and comfort. After that, the movement resistance of the limit column 117 can be reduced by adjusting the third adjustment rod 126, so that the limit column 117 is pushed by the air pressure and inserted into the limit hole 118, thereby achieving the position locking of the contact piece 111 and improving the stability of the coating.

[0035] It can be understood that there are two limit columns 117 in the fixed tube 114, the two limit columns 117 extend radially along the fixed tube 114, and a first rebound member 127 is provided between the two limit columns 117. The first rebound member 127 can make the two limit columns 117 disengage from the limit hole 118 when the air pressure in the fixed tube 114 drops, thereby unlocking the contact member 111.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An orthopedic splint fastening device, characterized in that: include: A first clamping plate and a second clamping plate are pivotally connected, each of the first clamping plate and the second clamping plate is provided with a covering assembly, the covering assembly includes a plurality of contact members and a support tube, and the surface of the contact member has a plurality of air holes; An air storage tank is disposed between the first clamping plate and the second clamping plate, the air storage tank comprises a tank body and a piston, and the tank body is connected to the plurality of support tubes; A locking assembly, used to fix the first clamping plate and the second clamping plate that are buckled with each other; The first splint and the second splint are rotated and interlocked to form a cavity for covering the patient's limbs, and the contact piece is used to contact the patient's skin. The first splint and the second splint are rotated and interlocked to drive the piston to move, and the gas in the gas tank can be injected into the support tube so that the contact piece presses the patient's limbs; the gas tank is also provided with a first adjusting rod, and the first adjusting rod is used to adjust the position of the piston and the tank body, thereby adjusting the air pressure in the support tube to achieve tightness adjustment.

2. An orthopedic splint fastening device according to claim 1, characterized in that: The contact piece is provided with a ventilation cavity, the ventilation cavity is connected to the air hole, and the ventilation cavity is arranged through the contact piece.

3. An orthopedic splint fastening device according to claim 1, characterized in that: A rotating shaft is provided between the first clamping plate and the second clamping plate, a guide groove is provided on the outer peripheral wall of the rotating shaft, and the air storage tank is provided with a driving rod and a pressure plate, the pressure plate is fixed to one end of the driving rod, and the other end of the driving rod is inserted into the guide groove, and the rotating shaft can rotate when the first clamping plate is combined with the second clamping plate, and the guide groove can guide the driving rod to move and make the pressure plate press the piston.

4. An orthopedic splint fastening device according to claim 3, characterized in that: The driving rod includes a base section and a threaded section, one end of the base section is inserted into the guide groove, the threaded section is coaxially arranged with the base section, the first adjusting rod is arranged on the driving rod and is threadedly connected to the threaded section, and rotating the first adjusting rod can adjust the screw connection depth between the first adjusting rod and the threaded section to adjust the total length of the driving rod, thereby adjusting the distance between the pressure plate and the tank body to achieve air pressure adjustment.

5. An orthopedic splint fastening device according to claim 1, characterized in that: The support tube includes a movable tube and a fixed tube, the movable tube is movably connected to the fixed tube, and the fixed tube and the movable tube can enclose an air storage cavity communicated with the air storage tank.

6. An orthopedic splint fastening device according to claim 5, characterized in that: A limiting device is provided in the support tube, and the limiting device is provided with a limiting column movably connected to the fixed tube. The inner circumferential wall of the movable tube is provided with a plurality of limiting holes arranged at intervals along the axial direction of the movable tube. When the air pressure in the support tube increases, the limiting column can move and be plugged into the limiting hole under the action of the air pressure, thereby realizing the fixed relative position of the fixed tube and the movable tube.

7. An orthopedic splint fastening device according to claim 6, characterized in that: The limiting device also includes a second adjusting rod and a transmission rod, the end of the transmission rod presses against the outer peripheral wall of the limiting column, the transmission rod is provided with an oblique groove, and the second adjusting rod is provided with a matching rod inserted in the oblique groove, and the second adjusting rod can move along the radial direction of the fixed tube, so that the matching rod moves along the oblique groove, thereby causing the transmission rod to move along the axial direction of the fixed tube and press against the limiting column, thereby increasing the resistance of the limiting column when it moves.

8. An orthopedic splint fastening device according to claim 4, characterized in that: The base section is provided with an insertion rod, the insertion rod extends along the radial direction of the driving rod, and the insertion rod is inserted into the guide groove.

9. An orthopedic splint fastening device according to claim 5, characterized in that: The first clamping plate and the second clamping plate are both provided with a connecting cavity, and the connecting cavity is connected to the gas storage cavity and the gas storage tank, so that the gas in the gas storage tank can enter the gas storage cavity through the connecting cavity.

10. An orthopedic splint fastening device according to claim 7, characterized in that: The limiting device is further provided with an elastic member and a pressure contact member, wherein the pressure contact member is mounted on the limiting column, and the elastic member is mounted on the transmission rod, and the transmission rod can push the elastic member so that the elastic member elastically pushes against the pressure contact member.

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