Stable pressure type first-aid resuscitator for newborns

Abstract

The invention discloses a stable pressure type first-aid resuscitator for newborns, and relates to the technical field of medical instruments. The device comprises a bottom plate, one end of the bottom plate is fixedly connected with a connecting plate, and the top of the connecting plate is symmetrically and fixedly connected with supporting columns. A supporting plate is fixedly connected to the top of the supporting column, a lifting assembly is installed on the top of the supporting plate, a console is slidably arranged on the lifting assembly, and a fixing block is fixedly connected to one side of the console. According to the device, the pressing assembly is arranged, the pressing assembly is started to operate, the chest of the newborn can be continuously and stably pressed through operation of the pressing assembly, rapid first-aid resuscitation of the newborn is achieved, and then when the pressing assembly operates, the pressing force can be reduced through the pressing assembly, so that the newborn can be quickly recovered. And during rapid first-aid resuscitation, secondary injury to the newborns is reduced, and through continuous operation and pressing of the pressing assembly, the working pressure of doctors is greatly relieved, and the rescue efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically refers to a neonatal stable pressure first aid resuscitator. Background Art

[0002] Neonatal asphyxia refers to a disease in which due to various etiologies before, during, or after childbirth, the fetus is hypoxic, resulting in intrauterine distress or respiratory and circulatory disorders during the delivery process, leading to the absence of spontaneous breathing or the failure to establish regular breathing within 1 minute after birth, with hypoxemia, hypercapnia, and acidosis as the main pathophysiological changes.

[0003] Neonatal asphyxia is the most common emergency after birth and must be actively rescued and correctly treated to reduce neonatal mortality and prevent long-term sequelae. Currently, the method for emergency treatment of apnea is to restore sufficient ventilation and repeatedly perform peripheral interventions on the child to stimulate breathing.

[0004] For the existing methods of intervening in neonatal asphyxia, most are that doctors slightly press the chest of the neonate with their fingers and then supply oxygen to the neonate through a breathing mask. However, due to the weak constitution of neonates, in order to avoid causing secondary harm to the neonate, doctors need to constantly maintain the pressing force and frequency. However, this situation easily leads to a decline in doctors' physical strength and attention, and it is necessary to change people to continue pressing every two minutes, during which the best rescue time for the neonate may be delayed. Summary of the Invention

[0005] The purpose of this application is to provide a neonatal stable pressure first aid resuscitator to solve the problem that during the doctor's rescue process, in order to avoid the decline of the doctor's physical strength and attention, it is necessary to change people to continue pressing every two minutes, which may delay the best rescue time for the neonate.

[0006] Specifically, this application adopts the following technical solutions to achieve the above purpose:

[0007] A neonatal stable pressure first aid resuscitator includes a bottom plate. One end of the bottom plate is fixedly connected with a connecting plate, and symmetrically fixed on the top of the connecting plate are support columns. The top of the support columns is fixedly connected with a support plate. An elevating assembly is installed on the top of the support plate, and a console is slidably arranged on the elevating assembly. One side of the console is fixedly connected with a fixed block, and a pressing assembly is installed at the bottom of the fixed block. A controller is installed on one side of the console, and an oxygen inhalation assembly is installed on one side of the console. Two fixing assemblies are symmetrically installed on the bottom plate.

[0008] By adopting the above technical solution, the hands and feet of the newborn are simply fixed by the fixing component, reducing the risk of the newborn's body rolling over due to external force, which may affect subsequent chest compression first aid resuscitation. Subsequently, the lifting component is started to operate until the pressing component is moved above the chest of the newborn. At this time, the oxygen supply component is used to continuously supply oxygen to the newborn. Then, through the operation of the pressing component, the chest of the newborn can be continuously and stably compressed, achieving rapid first aid resuscitation for the newborn. While the pressing component is operating, the pressing component can also relieve the pressing force. While performing rapid first aid resuscitation, it also reduces secondary harm to the newborn. Through the continuous operation and pressing of the pressing component and the oxygen supply of the oxygen supply component, the work pressure of doctors is greatly relieved and the rescue efficiency is improved.

[0009] Further, the lifting component includes a threaded rod rotatably connected to the top of the support plate. The top of the connecting plate is fixedly connected with a motor, and the output end of the motor is fixedly connected to the bottom of the threaded rod. The control console is threadedly connected to the threaded rod.

[0010] By adopting the above technical solution, the rotation of the motor drives the threaded rod to rotate. When the threaded rod rotates, the control console will descend according to the rotation of the threaded rod.

[0011] Further, a plurality of guide rods are symmetrically and fixedly connected to the top of the support plate. The tops of the plurality of guide rods are fixedly connected with a top plate. The control console is slidably connected to the plurality of guide rods. The motor is electrically connected to the controller.

[0012] By adopting the above technical solution, according to the guidance of the guide rods, the control console is prevented from shifting during the descent.

[0013] Further, the pressing component includes an electric telescopic rod fixedly connected to the top of the fixed block. The output end of the electric telescopic rod is fixedly connected to the top end of the connecting rod. The bottom of the connecting rod is fixedly connected with a connecting block. The electric telescopic rod is electrically connected to the controller.

[0014] By adopting the above technical solution, the operation of the electric telescopic rod will push the connecting rod to expand and contract, thereby pushing the connecting block to move downward together.

[0015] Further, a support rod is fixedly connected to the inside of the connecting block. Two sliders are symmetrically slidably connected to the support rod. Springs are symmetrically fixedly connected to the support rod. The bottoms of the two sliders are respectively hinged with hinge rods. The ends of the hinge rods far away from the sliders are hinged with hinge blocks. The bottom of the hinge block is fixedly connected with a pressing plate.

[0016] By adopting the above technical solution, when the pressing plate moves upward, according to the rotation of the two hinge rods, the two sliders will be driven to gradually move away from each other on the support rod, squeezing the two springs on both sides to contract. Through the buffering of the two springs, the pressure of the electric telescopic rod can be greatly reduced, thereby reducing the pressure generated by the pressing plate during the chest compression first aid for the newborn, and avoiding secondary harm to the newborn.

[0017] Furthermore, pressure sensors are symmetrically and fixedly connected to the top of the pressing plate, a sponge pad is fixedly connected to the bottom of the hinge block, and the pressure sensors are electrically connected to the controller.

[0018] By adopting the above technical solution, when the pressure sensors come into contact with the bottom of the connecting block, they will transmit information to the controller immediately to drive the pressing plate away from the chest of the newborn, avoiding the harm caused by the electric telescopic rod driving the pressing plate to continuously press on the chest of the newborn. By the electric telescopic rod reciprocally driving the pressing plate and the pressure sensors to perform compression rescue on the newborn, the operating pressure of the doctor is greatly reduced.

[0019] Furthermore, the oxygen inhalation component includes fixing rings symmetrically and fixedly connected to one side of the console, an oxygen cylinder is fixedly connected inside the fixing rings, an oxygen delivery pipe is fixedly connected to one end of the oxygen cylinder, a one-way valve is fixedly connected to the oxygen delivery pipe, and an oxygen inhalation mask is fixedly connected to the other end of the oxygen delivery pipe.

[0020] By adopting the above technical solution, the oxygen inhalation mask is worn on the face of the newborn, and then the one-way valve is opened, and the oxygen inside the oxygen cylinder is transmitted to the oxygen inhalation mask through the guidance of the oxygen delivery pipe, thereby continuously supplying oxygen to the newborn, greatly improving the rescue efficiency of the newborn, and better ensuring the life safety of the newborn.

[0021] Furthermore, the fixing component includes grooves symmetrically formed on one side of the bottom plate, elastic bands are hinged inside the grooves, magic tape rough surfaces are symmetrically and fixedly connected to one side of the bottom plate, and magic tape hook surfaces are fixedly connected to one side of the elastic bands.

[0022] By adopting the above technical solution, the posture of the newborn is stabilized by the elastic bands, so that the chest of the newborn can be stably facing upward, and better subsequent compression first aid can be carried out.

[0023] In summary, the present application includes at least one of the following beneficial effects;

[0024] 1. This application is provided with a pressing component. By starting the operation of the pressing component, through the operation of the pressing component, the chest cavity of the newborn can be continuously and stably pressed, achieving rapid first aid and resuscitation for the newborn. Secondly, while the pressing component is operating, the pressing component can also reduce the pressing force, reducing secondary harm to the newborn while performing rapid first aid and resuscitation. Through the continuous operation and pressing of the pressing component, the working pressure of doctors is greatly relieved, and the rescue efficiency is improved.

[0025] 2. This application is provided with an oxygen inhalation component and a fixing component. The posture of the newborn is stabilized by the elastic band, so that the chest cavity of the newborn can be stably facing upwards, facilitating subsequent pressing first aid. After stabilization, the oxygen inhalation mask can be removed, then worn on the face of the newborn, and then the one-way valve is opened, and the oxygen inside the oxygen cylinder is transmitted through the oxygen delivery tube to the oxygen inhalation mask, thereby continuously supplying oxygen to the newborn, greatly improving the rescue efficiency of the newborn and better ensuring the life safety of the newborn.

[0026] 3. This application is provided with a lifting component. The motor is started by the controller to operate, so that the console descends according to the rotation of the threaded rod. Through the continuous descent of the console, the console can drive the fixed block and the pressing component to descend together until the pressing component stays above the chest cavity of the newborn, and then the rotation of the threaded rod is stopped, so that the resuscitator can better perform pressing rescue on the newborn. Description of the Drawings

[0027] Figure 1 is a three-dimensional structural schematic diagram of the device main body in this application;

[0028] Figure 2 is a three-dimensional structural schematic diagram of the lifting component in this application;

[0029] Figure 3 is a three-dimensional structural schematic diagram of the pressing component in this application;

[0030] Figure 4 is a three-dimensional structural schematic diagram of the oxygen inhalation component in this application;

[0031] Figure 5 is a three-dimensional structural schematic diagram of the fixing component in this application.

[0032] Description of the Reference Numerals:

[0033] 1. Bottom plate; 2. Connecting plate; 3. Support column; 4. Support plate; 5. Lifting assembly; 6. Control console; 7. Fixed block; 8. Pressing assembly; 9. Controller; 10. Oxygen inhalation assembly; 11. Fixing assembly; 51. Threaded rod; 52. Motor; 53. Guide rod; 54. Top plate; 81. Electric telescopic rod; 82. Connecting rod; 821. Connecting block; 83. Support rod; 84. Slide block; 85. Spring; 86. Hinge rod; 87. Hinge block; 88. Pressing plate; 89. Pressure sensor; 810. Sponge pad; 101. Fixed ring; 102. Oxygen cylinder; 103. Oxygen delivery tube; 104. Check valve; 105. Oxygen inhalation mask; 111. Elastic band; 112. Hook surface of magic tape; 113. Loop surface of magic tape. Detailed implementation manners

[0034] The following further elaborates on this application in conjunction with the attached Figure 1 —5 drawings.

[0035] The embodiment of this application discloses a neonatal stable pressure type first aid resuscitator.

[0036] Referring to Figure 1 , a neonatal stable pressure type first aid resuscitator includes a bottom plate 1. One end of the bottom plate 1 is fixedly connected with a connecting plate 2, and symmetrically fixed on the top of the connecting plate 2 are support columns 3. The top of the support columns 3 is fixedly connected with a support plate 4. An lifting assembly 5 is installed on the top of the support plate 4. A control console 6 is slidably arranged on the lifting assembly 5. One side of the control console 6 is fixedly connected with a fixed block 7. A pressing assembly 8 is installed at the bottom of the fixed block 7. A controller 9 is installed on one side of the control console 6. An oxygen inhalation assembly 10 is installed on one side of the control console 6. Two fixing assemblies 11 are symmetrically installed on the bottom plate 1.

[0037] When a neonate has asphyxia, first place the neonate on the bottom plate 1, and then simply fix the hands and feet of the neonate through the fixing assemblies 11 to reduce the body rollover of the neonate caused by external force, which may affect the subsequent pressing first aid resuscitation. Then start the operation of the lifting assembly 5 to adjust the positions of the control console 6 and the fixed block 7 until the pressing assembly 8 is moved above the chest of the neonate. At this time, take out the oxygen inhalation assembly 10 and wear the oxygen inhalation assembly 10 on the face of the neonate. Through the oxygen inhalation assembly 10, continuous oxygen supply is provided for the neonate. Then start the operation of the pressing assembly 8. Through the operation of the pressing assembly 8, the chest of the neonate can be continuously and stably pressed to achieve rapid first aid resuscitation for the neonate. While the pressing assembly 8 is operating, the pressing force can also be reduced through the pressing assembly 8. While performing rapid first aid resuscitation, secondary injury to the neonate is also reduced. Through the continuous operation and pressing of the pressing assembly 8 and the oxygen supply of the oxygen inhalation assembly 10, the work pressure of doctors is greatly relieved and the rescue efficiency is improved.

[0038] Referring toFigure 1 and Figure 2 The lifting assembly 5 includes a threaded rod 51 rotatably connected to the top of the support plate 4. A motor 52 is fixedly connected to the top of the connecting plate 2, and the output end of the motor 52 is fixedly connected to the bottom of the threaded rod 51. The control console 6 is threadedly connected to the threaded rod 51. A plurality of guide rods 53 are symmetrically and fixedly connected to the top of the support plate 4, and the top of the plurality of guide rods 53 is fixedly connected to a top plate 54. The control console 6 is slidably connected to the plurality of guide rods 53. The motor 52 is electrically connected to the controller 9.

[0039] During use, first, the motor 52 is started to operate through the controller 9. The rotation of the motor 52 drives the threaded rod 51 to rotate. When the threaded rod 51 rotates, the control console 6 will descend according to the rotation of the threaded rod 51. At the same time, under the guidance of the guide rods 53, the control console 6 is prevented from shifting during the descent. Through the continuous descent of the control console 6, the control console 6 can drive the fixed block 7 and the pressing assembly 8 to descend together until the pressing assembly 8 stays above the chest cavity of the newborn, and then the rotation of the threaded rod 51 is stopped, so that the resuscitator can better perform chest compressions on the newborn.

[0040] Refer to Figure 1 and Figure 3 The pressing assembly 8 includes an electric telescopic rod 81 fixedly connected to the top of the fixed block 7. The output end of the electric telescopic rod 81 is fixedly connected to the top end of the connecting rod 82. The bottom of the connecting rod 82 is fixedly connected to a connecting block 821. The electric telescopic rod 81 is electrically connected to the controller 9. A support rod 83 is fixedly connected inside the connecting block 821. Two sliders 84 are symmetrically and slidably connected to the support rod 83. Springs 85 are symmetrically and fixedly connected to the support rod 83. The bottom of each of the two sliders 84 is hinged to a hinge rod 86. The end of the hinge rod 86 away from the slider 84 is hinged to a hinge block 87. The bottom of the hinge block 87 is fixedly connected to a pressing plate 88. Pressure sensors 89 are symmetrically and fixedly connected to the top of the pressing plate 88. A sponge pad 810 is fixedly connected to the bottom of the hinge block 87. The pressure sensors 89 are electrically connected to the controller 9.

[0041] During use, first start the operation of the electric telescopic rod 81. The operation of the electric telescopic rod 81 will push the connecting rod 82 to expand and contract, thereby pushing the connecting block 821 and the pressing plate 88 to move downward together. When the pressing plate 88 and the pressure sensor 89 are in contact with the chest cavity of the newborn, according to the pressure, the pressing plate 88 will be pushed to move towards the connecting block 821. When the pressing plate 88 moves upward, according to the rotation of the two hinge rods 86, the two sliders 84 will gradually move away from each other on the support rod 83. When the two sliders 84 move away from each other, they will squeeze the two springs 85 on both sides to contract. Through the buffering of the two springs 85, the pressure exerted by the electric telescopic rod 81 can be greatly reduced, thereby reducing the pressure generated when the pressing plate 88 presses on the chest cavity of the newborn for first aid, and avoiding secondary harm to the newborn. Secondly, when the pressing plate 88 continues to rise, it will drive the pressure sensor 89 to rise together until it fits against the bottom of the connecting block 821. When the pressure sensor 89 comes into contact with the bottom of the connecting block 821, it will transmit information to the controller 9 immediately. Subsequently, the controller 9 controls the electric telescopic rod 81 to start contracting, driving the pressing plate 88 away from the chest cavity of the newborn, avoiding the harm caused by the electric telescopic rod 81 driving the pressing plate 88 to continuously press on the chest cavity of the newborn. By driving the pressing plate 88 and the pressure sensor 89 to reciprocate to perform cardiopulmonary resuscitation on the newborn, the operating pressure of the doctor is greatly reduced, enabling the doctor to continue to rescue the newborn using other methods while the resuscitator is rescuing the newborn, better ensuring the life safety of the newborn.

[0042] Refer to Figure 4 and Figure 5 As shown in FIGS. 7 and 8, the oxygen inhalation assembly 10 includes fixing rings 101 symmetrically and fixedly connected to one side of the console 6. An oxygen cylinder 102 is fixedly connected inside the fixing ring 101. One end of the oxygen cylinder 102 is fixedly connected to an oxygen delivery tube 103. A one-way valve 104 is fixedly connected to the oxygen delivery tube 103. The other end of the oxygen delivery tube 103 is fixedly connected to an oxygen inhalation mask 105. The fixing assembly 11 includes grooves symmetrically formed on one side of the bottom plate 1. An elastic band 111 is hinged inside the groove. Hook-and-loop fastener rough surfaces 112 are symmetrically and fixedly connected to one side of the bottom plate 1. One side of the elastic band 111 is fixedly connected to a hook-and-loop fastener hook surface 113.

[0043] During use, first place the newborn on the bottom plate 1. Then, pull the elastic band 111 to attach the hook surface 113 on one side of the elastic band 111 to the loop surface 112 on one side of the bottom plate 1, so as to stabilize the posture of the newborn through the elastic band 111, making the newborn's chest face upward stably, and better performing subsequent chest compressions for first aid. After stabilization, the oxygen mask 105 can be removed, then worn on the face of the newborn. Subsequently, open the one-way valve 104, and transmit the oxygen inside the oxygen cylinder 102 to the oxygen mask 105 through the guidance of the oxygen delivery tube 103, so as to continuously supply oxygen to the newborn, greatly improving the rescue efficiency of the newborn and better ensuring the life safety of the newborn.

[0044] The implementation principle of a neonatal stable pressure type first aid resuscitator in this embodiment is as follows: when the newborn has asphyxia, first place the newborn on the bottom plate 1. Then, pull the elastic band 111 to attach the hook surface 113 on one side of the elastic band 111 to the loop surface 112 on one side of the bottom plate 1, so as to stabilize the posture of the newborn through the elastic band 111, making the newborn's chest face upward stably, and better performing subsequent chest compressions for first aid.

[0045] Secondly, start the motor 52 to operate through the controller 9. The rotation of the motor 52 drives the threaded rod 51 to rotate. When the threaded rod 51 rotates, the console 6 will descend according to the rotation of the threaded rod 51. At the same time, guided by the guide rod 53, the deviation of the console 6 during the descent is avoided. Through the continuous descent of the console 6, the console 6 can drive the fixed block 7 and the pressing component 8 to descend together until the pressing plate 88 stops above the chest of the newborn, then stop the rotation of the threaded rod 51, so that the resuscitator can better perform chest compression rescue on the newborn. After stabilization, the oxygen mask 105 can be removed, then worn on the face of the newborn. Subsequently, open the one-way valve 104, and transmit the oxygen inside the oxygen cylinder 102 to the oxygen mask 105 through the guidance of the oxygen delivery tube 103, so as to continuously supply oxygen to the newborn, greatly improving the rescue efficiency of the newborn and better ensuring the life safety of the newborn.

[0046] In addition, by starting the operation of the electric telescopic rod 81, the operation of the electric telescopic rod 81 will push the connecting rod 82 to expand and contract, thereby pushing the connecting block 821 and the pressing plate 88 to move downward together. When the pressing plate 88 and the pressure sensor 89 are in contact with the chest cavity of the newborn, according to the pressure, the pressing plate 88 will be pushed to move towards the connecting block 821. When the pressing plate 88 moves upward, according to the rotation of the two hinge rods 86, the two sliders 84 will gradually move away from each other on the support rod 83. When the two sliders 84 move away from each other, they will squeeze the two springs 85 on both sides to contract. Through the buffering of the two springs 85, the pressure generated by the push of the electric telescopic rod 81 can be greatly reduced, thereby reducing the pressure generated when the pressing plate 88 presses on the chest cavity of the newborn for first aid and avoiding secondary harm to the newborn. Secondly, when the pressing plate 88 continues to rise, it will drive the pressure sensor 89 to rise together until it fits against the bottom of the connecting block 821. When the pressure sensor 89 contacts the bottom of the connecting block 821, it will transmit the information to the controller 9 immediately. Subsequently, the controller 9 controls the electric telescopic rod 81 to start contracting, driving the pressing plate 88 away from the chest cavity of the newborn, avoiding the harm caused by the electric telescopic rod 81 driving the pressing plate 88 to continuously press on the chest cavity of the newborn. By driving the pressing plate 88 and the pressure sensor 89 to reciprocate to press on the newborn, the operating pressure of the doctor is greatly reduced, enabling the doctor to continue to rescue the newborn using other methods while the resuscitator is rescuing the newborn, better ensuring the life safety of the newborn. Through the continuous operation and pressing of the pressing plate 88 and the oxygen supply of the oxygen mask 105, the working pressure of the doctor is greatly relieved and the rescue efficiency is improved.

Claims

1. A neonatal stable pressure emergency resuscitator, comprising a base plate (1), characterized in that: One end of the bottom plate (1) is fixedly connected to a connecting plate (2), the top of the connecting plate (2) is symmetrically fixedly connected to a supporting column (3), the top of the supporting column (3) is fixedly connected to a supporting plate (4), a lifting component (5) is installed on the top of the supporting plate (4), a control console (6) is slidably arranged on the lifting component (5), a fixing block (7) is fixedly connected to one side of the control console (6), a pressing component (8) is installed at the bottom of the fixing block (7), a controller (9) is installed on one side of the control console (6), an oxygen absorption component (10) is installed on one side of the control console (6), and two fixing components (11) are symmetrically installed on the bottom plate (1).

2. A neonatal stable pressure emergency resuscitator according to claim 1, characterized in that: The lifting assembly (5) comprises a threaded rod (51) rotatably connected to the top of the support plate (4); a motor (52) is fixedly connected to the top of the connecting plate (2); an output end of the motor (52) is fixedly connected to the bottom of the threaded rod (51); and the control console (6) is threadedly connected to the threaded rod (51).

3. A neonatal stable pressure emergency resuscitator according to claim 2, characterized in that: A plurality of guide rods (53) are symmetrically fixedly connected to the top of the support plate (4), a top plate (54) is fixedly connected to the top of the plurality of guide rods (53), the control console (6) is slidably connected to the plurality of guide rods (53), and the motor (52) is electrically connected to the controller (9).

4. A neonatal stable pressure emergency resuscitator according to claim 3, characterized in that: The pressing assembly (8) comprises an electric telescopic rod (81) fixedly connected to the top of a fixed block (7); the output end of the electric telescopic rod (81) is fixedly connected to the top of a connecting rod (82); the bottom of the connecting rod (82) is fixedly connected to a connecting block (821); and the electric telescopic rod (81) is electrically connected to a controller (9).

5. A neonatal stable pressure emergency resuscitator according to claim 4, characterized in that: The connecting block (821) is fixedly connected to a support rod (83) inside, and two sliders (84) are symmetrically slidably connected to the support rod (83), and a spring (85) is symmetrically fixedly connected to the support rod (83). The bottoms of the two sliders (84) are both hinged with a hinge rod (86), and one end of the hinge rod (86) away from the slider (84) is hinged with a hinge block (87), and the bottom of the hinge block (87) is fixedly connected to a pressing plate (88).

6. A neonatal stable pressure emergency resuscitator according to claim 5, characterized in that: A pressure sensor (89) is symmetrically fixedly connected to the top of the pressing plate (88), a sponge pad (810) is fixedly connected to the bottom of the hinge block (87), and the pressure sensor (89) is electrically connected to the controller (9).

7. A neonatal stable pressure emergency resuscitator according to claim 1, characterized in that: The oxygen inhalation assembly (10) comprises a fixing ring (101) symmetrically fixedly connected to one side of a control console (6); an oxygen cylinder (102) is fixedly connected inside the fixing ring (101); one end of the oxygen cylinder (102) is fixedly connected to an oxygen supply pipe (103); a one-way valve (104) is fixedly connected to the oxygen supply pipe (103); and the other end of the oxygen supply pipe (103) is fixedly connected to an oxygen inhalation mask (105).

8. A neonatal stable pressure emergency resuscitator according to claim 1, characterized in that: The fixing assembly (11) comprises a groove symmetrically arranged on one side of the base plate (1), an elastic band (111) being hinged inside the groove, a Velcro fleece surface (112) being symmetrically fixedly connected to one side of the base plate (1), and a Velcro thorn surface (113) being fixedly connected to one side of the elastic band (111).

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