Abdominal impact apparatus

Abstract

Disclosed is an abdominal impact apparatus (10), fixed to an upper edge (101) of a chair back structure and comprising a fixator (11), at least one fixing element, and a pressure applicator (21). The fixator (11) further comprises a pressure-bearing part (12). The fixator (11) is fixed on the chair back structure (100) by means of the at least one fixing element so as to make the pressure-bearing part (12) abut against the chair back structure (100). The pressure applicator (21) has a blunt-rounded shape and is disposed at the top of the fixator (11).

Description

An abdominal impact device Technical Field

[0001] This invention relates to an abdominal impact device, and more particularly to an abdominal impact device that can be used for self-rescue in case of choking. Existing technology

[0002] Abdominal thrusts, also known as the Heimlich maneuver, are a first-aid method to clear obstructions in the upper airway. While choking can be managed by using the force of the upper abdomen against a chair back to expel the object from the trachea, the narrow and elongated upper edge of most chair backs often disperses the pressure on the abdomen, resulting in insufficient concentration of pressure and delays in emergency treatment. Summary of the Invention

[0003] The present invention provides an abdominal impact device to address the shortcomings of prior art.

[0004] In view of the aforementioned problems, the present invention provides an abdominal impact device that can be easily fixed to the upper edge of a chair back without easily falling off, and at the same time can concentrate the pressure of the abdominal impact.

[0005] To achieve the above objectives, the present invention provides an abdominal impact device, comprising the following configuration: An abdominal impact device fixed to a chair back structure, characterized in that it comprises: a retainer having a pressure-bearing portion, the retainer being fixed to the chair back structure by at least one fixing element to abut the pressure-bearing portion against the chair back structure; and a pressure applicator having an upwardly protruding, blunt shape, disposed at the top of the retainer.

[0006] According to one embodiment of the present invention, the at least one fixing element is selected from at least one of the group consisting of screws, adhesives, stops, springs, extension clips and protrusions.

[0007] According to one embodiment of the present invention, the fixture includes a fixing plate, the pressure applicator is disposed on the top of the fixing plate, and the bottom of the fixing plate serves as the pressure-bearing part.

[0008] According to one embodiment of the invention, the pressure applicator has the shape of a human fist.

[0009] According to one embodiment of the present invention, the widest part of the horizontal cross-section of the pressure applicator is, for example, greater than or equal to 8 cm, preferably greater than or equal to 10 cm, more preferably greater than or equal to 12 cm, and the horizontal cross-section is parallel to the pressure-bearing part and close to the upper edge of the chair back structure.

[0010] According to one embodiment of the invention, a soft material is further included, which covers at least a portion of the pressure applicator.

[0011] According to one embodiment of the present invention, the top of the retainer has a first engaging portion, and the bottom of the pressure applicator has a second engaging portion, wherein the first engaging portion engages with the second engaging portion to fix the pressure applicator to the top of the retainer.

[0012] According to one embodiment of the invention, the retainer, the pressure applicator, or the at least one retaining element are further connected by a chain or rope.

[0013] According to one embodiment of the present invention, the fastener further includes a first side extension wall, which is connected to one side edge of the pressure-bearing portion and is arranged perpendicularly to the pressure-bearing portion; the first side extension wall and the rest of the fastener except for the first side extension wall are integrally formed, or are each independent components and connected to each other.

[0014] According to one embodiment of the present invention, the fastener further includes a second side extension wall, which connects to the other side edge of the pressure-bearing portion opposite to the side edge and is arranged perpendicularly to the pressure-bearing portion; the second side extension wall and the rest of the fastener except for the second side extension wall are integrally formed, or are each independent elements and connected to each other.

[0015] According to one embodiment of the present invention, the at least one fixing element is selected from at least one of the group consisting of screws, adhesives, stops and springs.

[0016] According to one embodiment of the present invention, the chair back structure is a chair back crossbar; the fastener further includes a horizontal extension wall that connects to the first side extension wall and is arranged parallel to the pressure-bearing portion.

[0017] According to one embodiment of the present invention, the at least one fixing element is an extension clamp or a spring, the extension clamp or the spring connecting the first side extension wall and the horizontal extension wall.

[0018] According to one embodiment of the present invention, the retainer is a C-type clamp.

[0019] According to one embodiment of the present invention, the at least one fixing element is a screw.

[0020] According to one embodiment of the present invention, the C-shaped clamp elastically clamps the chair back structure.

[0021] According to one embodiment of the present invention, the at least one fixing element is a protrusion, and the C-shaped clamp abuts against the chair back structure by means of the protrusion.

[0022] According to one embodiment of the present invention, the at least one fixing element is integrally formed with the fixing device.

[0023] According to one embodiment of the present invention, the C-type clamp includes at least one side extension wall.

[0024] According to one embodiment of the present invention, the fixing element is a screw, the end of which is provided with a baffle, and the screw presses against the chair back structure through the baffle. Attached Figure Description

[0025] Figure 1 is a schematic diagram showing the abdominal impact device according to the first embodiment of the present invention; Figures 2A and 2B are schematic diagrams showing Figure 1 from different perspectives; Figure 3 is a schematic diagram showing the abdominal impact device according to the second embodiment of the present invention; Figures 4A and 4B are side view schematic diagrams showing the abdominal impact device according to the third embodiment of the present invention; Figure 5 is a side view schematic diagram showing the abdominal impact device according to the fourth embodiment of the present invention; Figures 6A to 6D are schematic diagrams showing the abdominal impact device according to the fifth embodiment of the present invention; Figure 7 is a side view schematic diagram showing the abdominal impact device according to the sixth embodiment of the present invention; Figures 8A and 8B are schematic diagrams showing the abdominal impact device according to the seventh embodiment of the present invention.

[0026] Symbol Explanation 10: Abdominal Impact Device 11: Fixer 12: Pressure Bearing Part 13: Fixing Plate 14: First Side Extension Wall 15: Second Side Extension Wall 16: Horizontal Extension Wall 17: First Clamping Part 18: Second Clamping Part 21: Pressure Applicator 22: Screw Hole 23: Soft Material 31: Screw 311: Protrusion 312: Baffle 32: Adhesive 33: Stop Part 34: Spring 35: Extension Clamping Part 36: Protrusion 41: First Engaging Part 42: Second Engaging Part 100: Chair Back Structure 101: Upper Edge of Chair Back Structure 102: Cylindrical Chair Back Crossbar 103: Flat Chair Back Crossbar A1: Axis of Symmetry A2: Axis of Symmetry F1: Action Force F2: Reaction Force W: Widest Point Detailed Implementation

[0027] The following describes specific embodiments of the present invention with reference to the accompanying drawings, wherein identical or similar components are represented by the same element symbols. It should be noted that the following embodiments and examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] Figure 1 is a schematic diagram showing the abdominal impact device according to a first embodiment of the present invention. In Figure 1, the abdominal impact device 10 is fixed to a chair back structure 100, and the abdominal impact device 10 includes a retainer 11 and a pressure applicator 21.

[0029] The bottom of the retainer 11 has a pressure-bearing portion 12. The retainer 11 is fixed to the backrest structure 100 by at least one fixing element. The fixing element penetrates or engages with the retainer 11, inserts into or abuts against the backrest structure 100, and is located against the pressure-bearing portion 12 on the backrest structure 100. The pressure applicator 21 has an upwardly protruding, blunt shape and is located at the top of the retainer 11. In this specification, "bottom of the retainer" refers to the side of the retainer closest to the ground; "top of the retainer" refers to the side of the retainer opposite to the side where the pressure-bearing portion is located, i.e., the side of the retainer away from the ground. In this embodiment, the retainer 11 and the pressure applicator 21 are integrally molded. The fixing element is a screw 31, which is inserted into the backrest structure 100 through screw holes 22 that penetrate the pressure applicator 21 and the retainer 11, thereby fixing the retainer 11 to the backrest structure 100. However, in other embodiments, the fixing element and the retainer 11 may also be integrally formed to securely fix the abdominal impact device 10 to the upper edge of the chair back.

[0030] In this specification, the manufacturing method of "one-piece molding" can be obtained by means of methods known to those skilled in the art, such as one-time injection molding, casting molding, stamping molding, turning molding, etc.

[0031] Accordingly, during use, the user's abdomen presses against the pressure device 21 of the abdominal impact device 10, and downward force is applied to cause the pressure device 21 to generate an upward reaction force to impact the user's abdomen. In this way, since the abdominal impact device 10 is firmly fixed to the chair back structure 100, the user can quickly and repeatedly impact the abdomen in an ergonomic and less strenuous manner to expel foreign objects stuck in the trachea.

[0032] Figures 2A and 2B are schematic diagrams showing different perspectives of Figure 1. Figure 2A is a top view of Figure 1. The pressure-bearing part 12 preferably has a symmetrical shape, with its axis of symmetry A1 (parallel to the upper edge 101 of the chair back structure) arranged horizontally. The widest part W of the horizontal cross-section of the pressure applicator 21 (where it is parallel to the pressure-bearing part 12 and close to the chair back structure 100, i.e., parallel to the upper edge 101 of the chair back structure) is, for example, greater than or equal to 8 cm, preferably greater than or equal to 10 cm, and more preferably greater than or equal to 12 cm. Accordingly, the pressure applicator 21 can provide the optimal pressure for impacting the abdomen. Figure 2B is a schematic diagram of a user using the invention shown in Figure 1. The top of the pressure device 21 has an upwardly protruding arc shape. The user, whose upper airway is blocked by a foreign object, stands behind a chair facing the abdominal impact device 10, bends over, and presses their upper abdomen (the bottom of the diaphragm) against the pressure device 21. Then, the user presses down forcefully with their upper body. The weight of the body, combined with the traction of the arms (not shown, for example, by gripping the seat of the chair), generates a downward force F1. At the same time, because the pressure-bearing part 12 is close to the backrest structure 100 (i.e., the upper edge 101 of the backrest structure), the user's downward force F1 causes the pressure device 21 to generate an upward reaction force F2. By repeatedly impacting the abdomen with the reaction force F2 using this mechanism, the foreign object stuck in the trachea is expelled. The upwardly protruding arc shape of the top of the pressure device 21 and its widest point W (see also Figure 2A) being greater than or equal to 8 cm can protect the user from injury when forcefully impacting the abdomen. Furthermore, since the pressure applicator 21 would disperse the pressure impacting the abdomen if it were too wide, its widest point W is preferably less than or equal to 20 cm.

[0033] Furthermore, in this invention, the retainer 11 can have various configurations for mounting or fixing the abdominal impact device 10 to the upper edge of the chair back. For example, the retainer 11 can be integrally formed with the pressure applicator 21, or it can be a separate component connected to each other mechanically or structurally. The retainer 11 can include various types of structural elements, including but not limited to plate-shaped elements, arc-shaped elements, irregular-shaped elements, etc. This design allows for high adaptability and variability to meet different chair back shapes or application requirements. Taking the retainer 11 as an example, the bottom of the plate-shaped element (also referred to as the retaining plate in this specification) can serve as a pressure-bearing part 12, and the width and / or area of ​​its top can be designed to be less than, equal to, or greater than the width and / or area of ​​the bottom of the pressure applicator 21 (referring to the side of the pressure applicator 21 that joins the top of the retainer 11) according to application requirements. It can be easily understood that the retaining plate can also be integrally formed with the pressure applicator 21, or it can be made separately and combined with each other. For example, Figure 3 is a schematic diagram showing the abdominal impact device according to a second embodiment of the present invention. The fixator 11 includes a fixing plate 13, and a pressure applicator 21 is disposed on the top of the fixing plate 13. The fixing plate 13 and the pressure applicator 21 are each independent components. In this embodiment, the width and area of ​​the top of the fixing plate 13 are greater than the width and area of ​​the bottom of the pressure applicator 21, thereby providing good stability and support structure. The bottom of the fixing plate 13 serves as the pressure-bearing portion 12 of the fixator 11. The fixing element is at least one screw 31, the end of which has a pointed tip that can be drilled into the chair back structure 100, thereby fixing the fixing plate 13 to the chair back structure 100. The top of the retainer 11 has a first engaging portion 41, and the bottom of the pressure applicator 21 has a second engaging portion 42. In this embodiment, the first engaging portion 41 and the second engaging portion 42 form a tenon structure, wherein the first engaging portion 41 engages with the second engaging portion 42 to fix the pressure applicator 21 to the top of the retainer 11. The user can easily disassemble or assemble the retainer 11 and the pressure applicator 21 at will through the design of the tenon structure, thereby providing an option that makes the user's back more comfortable after disassembling the pressure applicator 21. In other embodiments, the first engaging portion 41 and the second engaging portion 42 may also have an internal thread and an external thread structure, or a barb structure, which will be described in detail later. Furthermore, the fixator 11 and the pressure applicator 21 can be further connected by a chain or rope to prevent them from being unable to be combined in an emergency. For example, the fixator 11 and the pressure applicator 21 can each be an independent component and are normally in an uncombined state with the other component. In an emergency, the user or other person can quickly grab and combine the components by means of a chain or rope to use the abdominal impact device 10 of the present invention in real time.

[0034] Figures 4A and 4B are side views illustrating the abdominal impact device according to a third embodiment of the present invention. As shown in Figure 4A, the fixator 11 includes a first side extension wall 14, which is perpendicular to the axis of symmetry A2 of the pressure-bearing portion 12 (see also Figure 2A, which is perpendicular to the upper edge 101 of the chair back structure) and connected to one side edge of the pressure-bearing portion 12. Furthermore, those skilled in the art will understand that in this embodiment, the fixator 11 may also include various types of structural elements, and the first side extension wall 14 and these various types of structural elements may be integrally formed, or they may be two independent elements connected by means of snap-fitting, locking, or bonding; for example, when the fixator 11 includes a plate-shaped element (e.g., a fixing plate 13), the first side extension wall 14 may be connected to one side edge of the bottom of the fixing plate 13. In the embodiment shown in Figure 4A, the fixing element is at least one adhesive 32, which is disposed between the retainer 11 and the backrest structure 100 and fixed together by the adhesive force of the adhesive 32. In the embodiment shown in Figure 4B, the fixing element is a stop 33, which is connected to the backrest structure 100. A gap exists between the stop 33 and the backrest structure 100 for the first side extension wall 14 to be inserted, thereby pressing against the pressure-bearing part 12 and the first side extension wall 14 on the backrest structure 100. As described in the previous embodiments, the stop 33 and the retainer 11 can also be further connected by a chain or rope for arbitrary disassembly or assembly.

[0035] Figure 5 is a side view schematic diagram showing the abdominal impact device according to the fourth embodiment of the present invention. In this embodiment, the fixator 11 is a "positive C-shaped" clamp, and the fixing element is a screw 31. In this embodiment, the chair back structure 100 has a cylindrical chair back crossbar 102, and the screw 31 preferably has a long shank. In use, after rotating the screw 31 to penetrate the fixator 11, the end of the shank presses against the chair back crossbar 102, which can fix the abdominal impact device 10 without damaging the chair back structure 100.

[0036] It should be noted that, in this specification, "C-type" refers to a broad C-shaped structure, including but not limited to those generally resembling a C-shape, U-shape, or other non-linear geometric configurations with curved, concave, or arc-shaped contours. The adjacent sides of this structure can be selectively connected by rounded transitions, acute angles, right angles, or obtuse angles, or can be designed using integral curved surfaces or clearly defined folded lines, thereby forming a variable curved structure with different side lengths and geometric connection forms. Therefore, the C-type clamp of this invention can conform more securely to the shape of various chair back structures.

[0037] Figures 6A to 6D are schematic diagrams showing the abdominal impact device according to the fifth embodiment of the present invention, wherein the fixator 11 includes a first side extension wall 14 and a second side extension wall 15. That is, in this embodiment, the fixator 11 can be regarded as a C-shaped structure with concave folds and / or folded line joints. As shown in Figure 6A (side view), at least one of the first side extension wall 14 and the second side extension wall 15 is perpendicular to the axis of symmetry A2 of the pressure bearing portion 12 (which is perpendicular to the upper edge 101 of the chair back structure, please also refer to Figure 2A), and the first side extension wall 14 and the second side extension wall 15 are respectively connected to the two opposite side edges of the pressure bearing portion 12. In addition, those skilled in the art should understand that in this embodiment, the fixator 11 may also include various types of structural elements, wherein the first side extension wall 14, the second side extension wall 15 of the fixator 11 and at least two of the various types of structural elements can be integrally formed, and / or at least one of the elements is an independent element and is connected to other elements by means of snap-fitting, locking, adhesive, etc. For example, when the fastener 11 includes a plate-shaped element (e.g., a fixing plate 13), the first side extension wall 14 and the second side extension wall 15 can be respectively connected to two opposite side edges of the bottom of the fixing plate 13; and the first side extension wall 14, the second side extension wall 15, and the fixing plate 13 are integrally formed; or, the first side extension wall 14 and the fixing plate 13 are integrally formed, and the second side extension wall 15 and the fixing plate 13 are connected by snap-fit; or, the first side extension wall 14 and the fixing plate 13, and the second side extension wall 15 and the fixing plate 13 are all connected to each other by snap-fit, or other more possible connection methods. In this embodiment, the fastening element is a screw 31, and its shank preferably has a large diameter. Since the distance between the first side extension wall 14 and the second side extension wall 15 in this embodiment is fixed, it cannot clamp the backrest structure 100 whose thickness is smaller than the distance. If the rotating screw 31 penetrates the fastener 11 and presses against the backrest structure 100, it can smoothly clamp backrests of different thicknesses. However, those skilled in the art will understand that the fixing element in this embodiment may also include other forms, such as adhesive, and is not limited to a single screw but can be varied according to the actual needs of those skilled in the art. Figure 6B is an exploded view showing the various components of one embodiment of the abdominal impact device 10, wherein the pressure applicator 21 is an ellipse, the first engaging part 41 is used to engage the second engaging part 42 (not shown in the figure) at the bottom of the pressure applicator 21, a circular hole is drilled in the center of the first side extension wall 14, and an internal thread is engraved in the inner wall of the circular hole. A protrusion 311 is provided on the outer side of the screw head of the screw 31, and a baffle 312 may be provided at the end of the screw 31.The usage steps are shown in Figure 6C. First, combine the retainer 11 and the pressure applicator 21 in Figure 6B. Then, pinch the protrusion 311 with your fingers and rotate the screw 31 into the round hole on the first side extension wall 14. Next, assemble the baffle 312 and continue to rotate the screw 31 until the baffle 312 presses against the chair back structure 100. Since the longitudinal (axial) stress is distributed to the contact surface of the threads (the threads of the screw 31 and the internal threads of the round hole), the retainer 11 and the chair back structure 100 are firmly connected. Since the baffle 312 provides a larger contact surface, it can increase the friction between the screw 31 and the chair back structure 100, thereby preventing the device from shifting when impacting the abdomen. This type of C-clamp (retainer 11) design is not only suitable for chair backs of various thicknesses, but also very secure when clamped onto ergonomically designed curved chair backs like those in this embodiment. As shown in Figure 6D, in one example, the fixing element can also be a spring 34. The elasticity of the spring 34 is used to press against the first side extension wall 14 (or the second side extension wall 15) and the chair back structure 100 respectively to produce a fixing effect. In this example, the first engaging part 41 and the second engaging part 42 can be configured as an external thread and an internal thread structure, as shown in Figure 6D. In Figure 6D, the pressure device 21 is specifically drawn as a cross-sectional view (a cross-sectional view parallel to axis A2 in Figure 2A) to show that the second engaging part 42 at its bottom is an internal thread, and the first engaging part 41 at the top of the fixing device 11 is an external thread. The user can easily rotate and disassemble or rotate and reassemble the pressure device 21 and the fixing device 11 at will through the design of the thread structure. However, in addition to the above-described form, those skilled in the art should understand that in this embodiment, the aforementioned first engaging part 41 and second engaging part 42 can also be configured as a tenon structure or a hook structure. In addition, a layer of soft material 23 may be further covered on at least part of the surface of the pressure applicator 21, such as, but not limited to, leather, cotton, fabric, foam, silicone, rubber, or a combination thereof, so as to make the user feel more comfortable.

[0038] Figure 7 is a side view of the abdominal impact device according to the sixth embodiment of the present invention. The fixator 11 includes a first side extension wall 14 and a horizontal extension wall 16. The first side extension wall 14 is connected to one side edge of the pressure-bearing part 12 and is arranged perpendicularly to the pressure-bearing part 12. The horizontal extension wall 16 is connected to the first side extension wall 14 and is arranged parallel to the pressure-bearing part 12. That is, in this embodiment, the fixator 11 can be regarded as a C-shaped structure with concave folds and / or folded line joints. In addition, those skilled in the art should understand that in this embodiment, the fixator 11 may also include various types of structural elements, and the first side extension wall 14, the horizontal extension wall 16 and at least two of the various types of structural elements of the fixator 11 may be integrally formed, and / or at least one of the elements may be an independent element and connected to other elements by means of snap-fit, locking, adhesive, etc. For example, when the fixator 11 includes a plate-shaped element (e.g., a fixing plate 13, the element symbol is omitted in the figure for simplicity), the first side extension wall 14 may be connected to one side edge of the bottom of the fixing plate 13. In this embodiment, the backrest structure 100 includes a flat backrest crossbar 103. Those skilled in the art will understand that the fixing element in this embodiment can be a screw 31 (not shown), which can penetrate the horizontal extension wall 16 and press against the lower edge of the backrest crossbar 103 (see also Figure 5); alternatively, the first side extension wall 14 in this embodiment can also include an extension clamp 35, which serves as a fixing element and connects the horizontal extension wall 16 to the lower edge of the extension clamp 35. The span of this C-type clamp (fixer 11) can be adjusted by the extension clamp 35 parallel to the first side extension wall 14, so that the horizontal extension wall 16 is close to the lower edge of the backrest crossbar 103; wherein, the extension clamp 35 can also utilize the elasticity of the spring 34 or the extension force of other materials to generate clamping force to fix the fixer 11 to the backrest crossbar 103.

[0039] The retainer 11 can also be a flexible C-shaped clamp to elastically clamp the chair back structure. As mentioned above, the C-shaped clamp may include, but is not limited to, shapes with rounded corners, acute angles, right angles, or obtuse angles, and may be integrally formed with a curved surface or joined by defined fold lines. For example, Figures 8A and 8B are schematic diagrams showing the abdominal impact device of the seventh embodiment of the present invention, wherein the retainer 11 is a C-shaped clamp with an arc curve, which elastically clamps the chair back structure 100 by means of material. As shown in Figure 8A (side view), the retainer 11 further includes a first clamp 17, a second clamp 18, and a plate-shaped element (e.g., a retaining plate 13; for simplicity, the element symbol is omitted in the figure). The second clamp 18 includes an extended wall on one side. At least one of the first clamp 17 and the second clamp 18 includes at least one retaining element. In this embodiment, the retaining element is a protrusion 36 that increases friction, making the retainer 11 combined with the protrusion 36 an elastic clamp that is easy to clamp onto chair backs of various thicknesses. In this embodiment, the retaining element and the retainer 11 can be integrally molded. As shown in Figure 8B, the C-shaped retainer 11, made of elastic material, is clamped onto the chair back crossbar 103 of the chair back structure 100 via the protrusion 36. The pressure applicator 21 can be shaped like a human fist with the knuckles facing upwards, and is located on the top of the retainer 11 to simulate the effect of the Heimlich maneuver by punching the abdomen. If someone chokes while alone, or if bystanders are unfamiliar with the Heimlich maneuver, even if they see the abdominal thrust device 10 of this invention, they may not realize it can be used for first aid. Instructing the user through the user manual would waste the crucial four minutes and delay emergency treatment (not to mention the difficulty of reading if the language is different). Due to the widespread promotion of abdominal thrusts in recent years, a choking victim seeing a fist-shaped pressure device 21 on the chair back structure 100 in a critical moment can quickly recall the Heimlich maneuver and further aid in self-rescue. In addition to the configurations shown in Figures 8A and 8B, the flexible C-shaped clamp can also have a zigzag joint configuration, for example, including at least one extended wall to elastically clamp the chair back structure; and / or may include various types of structural elements, including but not limited to plate-shaped elements, curved elements, irregular-shaped elements, etc.

[0040] The above description is merely illustrative and not restrictive. Any equivalent modifications or alterations made without departing from the spirit and scope of this invention should be included in the appended claims.

Claims

1. An abdominal impact device, fixed to a chair back structure, characterized in that: It includes: A fastener having a pressure-bearing portion, the fastener being secured to the chair back structure by at least one fastening element to abut the pressure-bearing portion against the chair back structure; and A pressure applicator, having an upwardly protruding, blunt shape, is located at the top of the fixture.

2. The abdominal impact device according to claim 1, characterized in that: The at least one fastening element is selected from the group consisting of screws, adhesive, stops, springs, extension clips, and protrusions.

3. The abdominal impact device according to claim 2, characterized in that: The fixing element is a screw, and the end of the screw is provided with a baffle. The screw holds the chair back structure through the baffle.

4. The abdominal impact device according to claim 1, characterized in that: The fixture includes a fixing plate, the pressure applicator is located on the top of the fixing plate, and the bottom of the fixing plate serves as the pressure-bearing part.

5. The abdominal impact device according to claim 1, characterized in that: The pressure device is shaped like a human fist.

6. The abdominal impact device according to claim 1, characterized in that: The widest part of the horizontal cross-section of the pressure device is, for example, greater than or equal to 8 cm, preferably greater than or equal to 10 cm, and more preferably greater than or equal to 12 cm. The horizontal cross-section is parallel to the pressure-bearing part and close to the upper edge of the chair back structure.

7. The abdominal impact device according to claim 1, characterized in that: It also includes a soft material that covers at least part of the pressure applicator.

8. The abdominal impact device according to claim 1, characterized in that: The top of the retainer has a first engaging portion, and the bottom of the pressure applicator has a second engaging portion. The first engaging portion engages with the second engaging portion to fix the pressure applicator to the top of the retainer.

9. The abdominal impact device according to claim 1, characterized in that: The fastener, the pressure device, or the at least one fastening element are further connected by a chain or rope.

10. The abdominal impact device according to any one of claims 1 to 9, characterized in that: The fastener further includes a first side extension wall, which is connected to one side edge of the pressure-bearing part and is arranged perpendicularly to the pressure-bearing part. The first side extension wall and the rest of the fixture, excluding the first side extension wall, are integrally formed, or are independent components connected to each other.

11. The abdominal impact device according to claim 10, characterized in that: The fastener further includes a second side extension wall, which connects to the other side edge of the pressure-bearing part opposite to the side edge and is arranged perpendicular to the pressure-bearing part. The second side extension wall and the rest of the fixture, excluding the second side extension wall, are integrally formed, or are independent components connected to each other.

12. The abdominal impact device according to claim 11, characterized in that: The at least one fixing element is selected from the group consisting of screws, adhesives, stops and springs.

13. The abdominal impact device according to claim 10, characterized in that: The chair back structure is a chair back crossbar; the fastener further includes a horizontal extension wall, which is connected to the first side extension wall and is arranged parallel to the pressure-bearing part.

14. The abdominal impact device according to claim 13, characterized in that: The at least one fixing element is an extension clamp or a spring, which connects the first side extension wall to the horizontal extension wall.

15. The abdominal impact device according to any one of claims 1 to 9, characterized in that: The fixture is a C-type clamp.

16. The abdominal impact device according to claim 15, characterized in that: At least one of the fixing elements is a screw.

17. The abdominal impact device according to claim 15, characterized in that: The C-shaped clamp elastically holds the chair back structure.

18. The abdominal impact device according to claim 17, characterized in that: The at least one fixing element is a protrusion, and the C-shaped clamp holds the chair back structure by means of the protrusion.

19. The abdominal impact device according to claim 18, characterized in that: At least one of the fixing elements is integrally formed with the fixing device.

20. The abdominal impact device according to claim 15, characterized in that: The C-type clamp includes at least one extended wall.

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