CN113975131A

CN113975131A - Cardiopulmonary resuscitation device operated by one person

Info

Publication number: CN113975131A
Application number: CN202111470803.XA
Authority: CN
Inventors: 罗鸿
Original assignee: First Affiliated Hospital of Zhengzhou University
Current assignee: First Affiliated Hospital of Zhengzhou University
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-01-28

Abstract

The invention provides a cardiopulmonary resuscitation device operated by a single person, which comprises a bottom plate and a frame body, wherein the frame body is fixed on the bottom plate, and the cardiopulmonary resuscitation device further comprises: the device comprises a rotating shaft, a cam, a sliding block, a longitudinal push-pull rod and an air supply mechanism, wherein the rotating shaft is rotatably connected to the upper end of a frame body, and one end of the rotating shaft is provided with a hand crank; the cam is coaxially and fixedly connected with the rotating shaft, and an annular sliding groove is formed in the cam along the circumferential direction of the cam; the sliding block is connected with the annular sliding groove in a sliding manner; the longitudinal push-pull rod is arranged on the frame body through the longitudinal guide cylinder, the upper end of the longitudinal push-pull rod is fixedly connected with the sliding block, and the lower end of the longitudinal push-pull rod is provided with a pressure head; the gas supply mechanism is connected with the longitudinal push-pull rod, compressed gas is generated through the push-pull power of the longitudinal push-pull rod, and the compressed gas is released into the mouth of the rescued person once after the longitudinal push-pull rod performs push-pull action for 8 times. The invention can realize the heart pressing emergency operation including the mouth blowing through a simple hand-cranking mode when one rescuer performs the heart pressing emergency treatment.

Description

Cardiopulmonary resuscitation device operated by one person

Technical Field

The invention relates to the field of medical emergency equipment, in particular to a cardiopulmonary resuscitation device operated by a single person.

Background

For patients with sudden cardiac arrest, cardiac compression is a very important treatment, and if the patients are in syncope, such as shock, disturbance of consciousness or no response to call, the cardiopulmonary resuscitation can be carried out by the method. Cardiopulmonary resuscitation first aid needs the rescuer both hands to fold and press patient's chest to impel patient's heart to resume work, when carrying out the chest and pressing, still will carry out mouth-to-mouth artificial respiration, the chest frequency of pressing is about 120 times/minute, and the number of times of breathing that corresponds is about 15 times/minute, consequently, when cardiopulmonary resuscitation first aid, satisfying under the prerequisite of above-mentioned chest frequency of pressing, should reach about 8 times of pressing, exhale once to the mouth.

Current cardiopulmonary resuscitation first aid, to only under the condition of single rescuer in the scene, be difficult to satisfy above-mentioned operating condition, artifical direct heart rescue not only consumes physical power, but also needs artifical mouthful to mouthful blowing, also very inconvenient in the operation, consequently when only alone one implementation rescue, must appear the heart press with to mouthful exhale the mistake of giving consideration to each other, for the validity that guarantees the heart press, then can only give up artifical mouthful to mouthful blowing, very big influence the rescue quality to the work degree of difficulty of giving rescue work has been increased.

Disclosure of Invention

The present invention is directed to overcome the above problems in the prior art, and an object of the present invention is to provide a cardiopulmonary resuscitation device operated by a single person, which can simultaneously perform a cardiac compression emergency operation including mouth-blowing by a simple hand-cranking manner when a single rescuer performs a cardiopulmonary resuscitation emergency.

The technical scheme of the invention is as follows: the utility model provides a cardiopulmonary resuscitation device of one-man operation, includes bottom plate and support body, the support body is fixed in on the bottom plate, its characterized in that still includes:

the rotating shaft is rotatably connected to the upper end of the frame body, and one end of the rotating shaft is provided with a hand crank;

the cam is fixedly connected with the rotating shaft in a coaxial line, and an annular sliding groove is formed in the cam along the circumferential direction of the cam;

the sliding block is connected with the annular sliding groove in a sliding manner;

the longitudinal push-pull rod is arranged on the frame body through a longitudinal guide cylinder, the upper end of the longitudinal push-pull rod is fixedly connected with the sliding block, and the lower end of the longitudinal push-pull rod is provided with a pressure head;

and the gas supply mechanism is connected with the longitudinal push-pull rod, generates compressed gas through the push-pull power of the longitudinal push-pull rod, and releases the compressed gas into the mouth of the rescued person once after the longitudinal push-pull rod performs push-pull action for 8 times.

The air supply mechanism comprises:

the left end of the transverse rod is fixedly connected with the side wall of the longitudinal push-pull rod;

an inflator, comprising: a barrel; the piston is connected in the cylinder in a sliding manner along the longitudinal direction of the cylinder; the upper end of the piston rod is fixedly connected with the right end of the transverse rod, and the lower end of the piston rod is fixedly connected with the piston; the air inlet one-way valve is arranged on the side wall of the cylinder body and is used for enabling the outside atmosphere to enter the cylinder body; the air outlet one-way valve is arranged at the lower end of the cylinder body and used for outputting air in the cylinder body;

the upper side wall of the temporary compressed gas storage cavity is fixedly connected with the lower end of the inflator pump, the gas outlet one-way valve is arranged between the cylinder body and the temporary compressed gas storage cavity and used for conveying gas in the cylinder body into the temporary compressed gas storage cavity, and the temporary compressed gas storage cavity is fixedly connected with the frame body;

compressed gas intermittent output structure includes: the upper end of the shifting rod is fixedly connected with the lower surface of the piston, the lower end of the shifting rod penetrates through a partition wall between the inflator and the compressed gas temporary storage cavity from the inside of the inflator and extends into the compressed gas temporary storage cavity, and a plurality of shifting teeth are arranged at the lower end of the shifting rod along the longitudinal direction of the shifting rod; the gear is arranged in the compressed gas temporary storage cavity through a gear shaft, the gear shaft is rotationally connected to the inner wall of the compressed gas temporary storage cavity, one side end face of the gear is opposite to one inner side wall of the compressed gas temporary storage cavity, a C-shaped groove is formed in the side end face, the circle center of the C-shaped groove is overlapped with the center of the gear, a first compressed gas through hole penetrating through the thickness of the gear is formed in an opening of the C-shaped groove in the gear, and the gear is meshed with the shifting teeth; the sealing gasket is pasted on the inner side wall of the compressed gas temporary storage cavity, the end face of the gear side provided with the C-shaped groove is attached to the sealing gasket, a second compressed gas through hole and a first human body exhaled gas through hole are respectively formed in the sealing gasket, and the distances between the second compressed gas through hole and the first human body exhaled gas through hole and the axis of the gear shaft are both larger than the radius of the inner side wall of the C-shaped groove and smaller than the radius of the outer side wall of the C-shaped groove; the third compressed gas through hole is formed in the side wall of the compressed gas temporary storage cavity to which the sealing gasket is adhered, and is connected with the gas transmission joint which is arranged on the outer side wall of the compressed gas temporary storage cavity; the second human body exhaled air through hole is formed in the side wall of the compressed air temporary storage cavity pasted with the sealing gasket and communicated with the first human body exhaled air through hole;

a gas delivery assembly comprising: one end of the gas conveying pipe is connected with the gas conveying joint; the gas supply mask is connected with the other end of the gas delivery pipe, and a binding belt for binding the gas supply mask to the head of a person is arranged on the gas supply mask.

The number of teeth of the gear is 8 times of the number of teeth of the shifting gear, and when the longitudinal push-pull rod performs push-pull action for 8 times, the shifting rod conveys gas into a human mouth once along with the up-and-down movement of the piston for 8 times.

Each shifting tooth is hinged with the shifting rod, a shifting tooth limiting block fixed on the shifting rod is arranged above each shifting tooth, and the shifting tooth limiting block is used for limiting the corresponding shifting tooth to exceed the upper rotation limit; and a supporting spring connected with the shifting teeth and the shifting rod is arranged below each shifting tooth, and when the shifting teeth are not in contact with the teeth of the gear, the supporting spring can form upward supporting force on the shifting teeth, so that the shifting teeth are just in a state vertical to the shifting rod.

And a reverse preventing structure for preventing the gear shaft from reversing is also arranged between the gear shaft and the inner wall of the compressed gas temporary storage cavity.

The part of the lower end of the longitudinal push-pull rod, which is close to the pressure head, is provided with a telescopic structure with adjustable length.

The rotating shaft is rotatably connected to the upper end of the frame body through a bearing.

The thickness of the bottom plate gradually increases from one end to the other end.

Above-mentioned bottom plate and support body all establish to beta structure to portable, accomodate.

The invention has the beneficial effects that: the invention provides a cardiopulmonary resuscitation device operated by a single person, which can simultaneously realize the heart pressing emergency operation including mouth-to-mouth blowing through a simple hand-cranking mode when a single rescuer carries out cardiopulmonary resuscitation emergency treatment, greatly facilitates the operation of rescuers, and reduces the operation difficulty. Specifically, the hand crank handle can rhythmically realize the up-and-down movement of the pressure head so as to press the heart of a person, and meanwhile, the gear shifting teeth on the shifting rod drive the gear to rotate by an angle after being pressed up and down each time, wherein the number n of teeth of the gear 19 is 8 times of the number n' of teeth of the shifting teeth 24, and the longitudinal push-pull rod 6 carries out push-and-pull action for 8 times each time, the shifting rod 13 moves up and down 8 times along with the piston 10, so that the first compressed gas through hole 19-2 and the connection of the first compressed gas through hole 19-2 on the gear 19 are realized, so that gas is conveyed into the mouth of the person once, the gas is conveyed along with the rotation of the gear after the gas conveying once, and while the first compressed gas through hole 19-2 is blocked, the third compressed gas through hole 28, the second compressed gas through hole 23-1 are connected with the C-shaped groove 19-1, and the first human body exhaled gas through hole 23-2, The second person exhales through the holes 27, thereby allowing the air in the mouth of the person to be rescued to be exhausted to the outside atmosphere; by the positional presetting, the present invention does not communicate the first human body exhalation gas passing hole 23-2 with the first compressed gas passing hole 19-2 throughout the operation to avoid directly discharging the generated compressed gas into the outside atmosphere. The invention has simple structure and convenient operation, and can realize regular heart pressing operation and regular gas transmission and exhaust for human body at the same time.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged partial schematic view of the gas supply mechanism of the present invention;

FIG. 3 is a side view of the gear, gasket, and compressed gas buffer chamber of the present invention;

FIG. 4 is a schematic side end view of a gear of the present invention with a C-shaped groove;

FIG. 5 is a schematic side end view of the gear of the present invention without the C-shaped groove;

FIG. 6 is a schematic view of a gasket of the present invention;

FIG. 7 is a schematic view of a connection structure of the shift tooth and the shift lever according to the present invention.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but 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 thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 7, an embodiment of the present invention provides a cardiopulmonary resuscitation device operated by a single person, including a base plate 1 and a frame body 2, where the frame body 2 is fixed on the base plate 1, and further including: a rotating shaft 11, a cam 4, a slide block 5, a longitudinal push-pull rod 6, an air supply mechanism and the like. The rotating shaft 11 is rotatably connected to the upper end of the frame body 2, one end of the rotating shaft 11 is provided with a hand crank 22, and the rotating shaft 11 can continuously rotate through the hand crank 2; the cam 4 is fixedly connected with the rotating shaft 11 in a coaxial line mode, the cam 4 is provided with an annular sliding groove 4-1 along the circumferential direction of the cam 4, the cam can rotate by rotating the rotating shaft, the long shaft and the short shaft of the cam can alternately appear up and down in the vertical direction, and the sliding block 5 is connected with the annular sliding groove 4-1 in a sliding mode; the longitudinal push-pull rod 6 is arranged on the frame body 2 through the longitudinal guide cylinder 20 and can move up and down along the vertical direction, the upper end of the longitudinal push-pull rod 6 is fixedly connected with the sliding block 5, the lower end of the longitudinal push-pull rod 6 is provided with the pressure head 12, when the cam rotates, the up-and-down alternate appearance of the long axis and the short axis of the cam in the vertical direction can be realized, so that the sliding block which is connected with the cam in a sliding way can be driven to move up and down, the up-and-down movement of the sliding block drives the push-pull rod 6 to move up and down, and the up-and-down movement of the pressure head at the lower end of the push-pull rod 6 is realized, so that a rhythmic heart pressing action can be implemented for a rescued; the gas supply mechanism is connected with the longitudinal push-pull rod 6 to realize the linkage function, compressed gas is generated by the push-pull power of the longitudinal push-pull rod 6, and the compressed gas is released into the mouth of the rescuee once after the longitudinal push-pull rod 6 performs push-pull action for 8 times. In the embodiment, when a patient is rescued by cardiopulmonary resuscitation, the patient lies on the ground, the frame body 2 is held by a hand, the bottom plate 1 is slowly extended into the lower part of the back of the human body, the collar of the rescuee is unfastened, the air passage is opened by lifting the chin by the head, the heart pressure part is the precordial region, the pressure head 12 is aligned to the region, and the air supply mask of the air supply mechanism is worn on the face of the rescuee. When a single rescuer carries out cardiopulmonary resuscitation first aid, the cam 4 rotates to drive the sliding block 5 to move up and down and further drive the push-pull rod 6 to move up and down by simply rotating the hand crank 22 by hand, so that the pressure head 12 connected with the lower end of the push-pull rod 6 moves up and down, thereby rhythmically pressing the chest area of the rescuer, and carrying out cardiac compression first aid operation. The heart-lung resuscitation emergency operation device greatly facilitates the cardio-pulmonary resuscitation emergency operation of a rescue worker under the condition of a single person, reduces the operation difficulty, has a simple structure, does not need an additional power supply, does not have complicated electric control parts, and can simultaneously realize the functions of manually pressing the heart and blowing the mouth of a rescued person only by a simple mechanical structure.

Further, referring to fig. 2, the gas supply mechanism includes: the device comprises a transverse rod 8, an inflator 7, a compressed gas temporary storage cavity 14, a compressed gas intermittent output structure and a gas output assembly. Wherein the left end of the transverse rod 8 is fixedly connected with the side wall of the longitudinal push-pull rod 6; the inflator 7 includes: a cylinder 7 and a piston 10; the piston 10, the piston rod 9, the air inlet one-way valve 3, the air outlet one-way valve 18 and the like, wherein the piston 10 is connected in the cylinder 7 in a longitudinal sliding mode along the cylinder 7; the upper end of the piston rod 9 is fixedly connected with the right end of the transverse rod 8, and the lower end of the piston rod is fixedly connected with the piston; the air inlet one-way valve 3 is arranged on the side wall of the cylinder 7 and is used for enabling the outside atmosphere to enter the cylinder 7; the air outlet one-way valve 18 is arranged at the lower end of the cylinder 7 and used for outputting air in the cylinder 7. The upper side wall of the compressed gas temporary storage cavity 14 is fixedly connected with the lower end of the inflator 7, the air outlet one-way valve 18 is arranged between the cylinder 7 and the compressed gas temporary storage cavity 14 and used for conveying gas in the cylinder 7 into the compressed gas temporary storage cavity 14, and the compressed gas temporary storage cavity 14 is fixedly connected with the frame body 2; the compressed gas intermittent output structure comprises: the upper end of the shifting rod 13 is fixedly connected with the lower surface of the piston 10, the lower end of the shifting rod 13 penetrates through a partition wall 31 between the inflator 7 and the temporary compressed gas storage cavity 14 from the inflator 7 and extends into the temporary compressed gas storage cavity 14, and a plurality of shifting teeth 24 are arranged at the lower end of the shifting rod 13 along the longitudinal direction of the shifting rod; the gear 19 is arranged in the compressed gas temporary storage cavity 14 through a gear shaft 30, wherein the gear shaft 30 is rotatably connected to the inner wall of the compressed gas temporary storage cavity 14, one side end face of the gear 19 is opposite to one inner side wall of the compressed gas temporary storage cavity 14, a C-shaped groove 19-1 is formed in the side end face, the circle center of the C-shaped groove 19-1 is overlapped with the center of the gear 19, a first compressed gas through hole 19-2 penetrating through the thickness of the gear 19 is formed in an opening of the C-shaped groove 19-1 in the gear 19, and the gear 19 is meshed with the shifting teeth 24; the sealing gasket 23 is adhered to the inner side wall of the compressed gas temporary storage cavity 14, the end face of the side of the gear 19, which is provided with an arc-shaped C-shaped groove 19-1, is attached to the sealing gasket, when the gear 19 rotates, the gear 19 and the sealing gasket 23 can slide relatively in the direction around the gear shaft 30, the C-shaped groove 19-1 is most of a circular groove, the sealing gasket 23 is also respectively provided with a second compressed gas through hole 23-1 and a first human body exhaled gas through hole 23-2, wherein the distances between the second compressed gas through hole 23-1 and the first human body exhaled gas through hole 23-2 and the axis of the gear shaft 30 are both greater than the radius of the inner side wall of the C-shaped groove 19-1 and less than the radius of the outer side wall of the C-shaped groove 19-1; the third compressed gas through hole 28 is formed in the side wall of the compressed gas temporary storage cavity 14 of the sticking sealing gasket 23, the third compressed gas through hole 28 is connected with the gas delivery joint 29, and the gas delivery joint 29 is formed in the outer side wall of the compressed gas temporary storage cavity 14; the second human body exhaled air through hole 27 is formed in the side wall of the compressed air temporary storage cavity 14 of the sticking sealing gasket 23 and is communicated with the first human body exhaled air through hole 23-2; the gas delivery assembly comprises: the gas delivery pipe 15 and the gas supply mask 17, wherein one end of the gas delivery pipe 15 is connected with a gas delivery joint 29; the air supply mask 17 is connected with the other end of the air delivery pipe 15, the air supply mask 17 is provided with a binding belt 16 for binding the air supply mask 17 to the head of a person, when the air supply mask 17 is used, the air supply mask 17 is buckled on the mouth and nose of the person, and the two binding belts 16 are tied together around the face of the person at the back of the head. In the embodiment, the hand crank is operated by hand to rhythmically realize the up-and-down movement of the pressure head so as to press the heart part of the human, wherein the number n of teeth of the gear 19 is 8 times of the number n' of teeth of the shifting gear 24, and the shifting rod 13 conveys gas into the mouth of the human once after the longitudinal push-pull rod 6 completely executes the push-pull action for 8 times along with the up-and-down movement of the piston 10 for 8 times. Namely, the pressure head is pressed up and down once each time, the poking teeth on the poking rod drive the gear to rotate by 45 degrees (1/8 of 360 degrees, namely 45 degrees), the longitudinal push-pull rod 6 performs push-pull action for 8 times, the poking rod 13 moves up and down with the piston 10 for 8 times to realize one-circle rotation of the gear 19, the first compressed gas through hole 19-2 on the gear 19 is communicated with one time, so that one time of gas is delivered into the mouth of a rescuer, the gas is delivered once along with the rotation of the gear, and the third compressed gas through hole 28, the second compressed gas through hole 23-1 are communicated with the C-shaped groove 19-1, the first human body exhaled gas through hole 23-2 and the second human body exhaled gas through hole 27 while the first compressed gas through hole 19-2 is blocked, so that the gas exhaled from the mouth of the rescuer is reversely exhausted to the outside; by the positional presetting, the present invention does not communicate the first human body exhalation gas passing holes 23-2 with the first compressed gas passing holes 19-2 throughout the operation (i.e., the two gas passing holes are arranged to be staggered) to avoid directly discharging the generated compressed gas into the outside atmosphere. The invention has simple structure and convenient operation, and can realize regular heart pressing operation and regular gas transmission and exhaust for human body at the same time.

Furthermore, each shifting tooth 24 is hinged with the shifting rod 13, a shifting tooth limiting block 25 fixed on the shifting rod 13 is arranged above each shifting tooth 24, and the shifting tooth limiting block 25 is used for limiting the corresponding shifting tooth 24 to exceed the upper rotation limit; a supporting spring 26 connecting the shifting tooth 24 and the shifting lever 13 is arranged below each shifting tooth 24, and when the shifting tooth 24 is not in contact with the teeth of the gear 19, the supporting spring 26 can just form upward supporting force on the shifting tooth 24, so that the shifting tooth 24 is just in a state of being perpendicular to the shifting lever 13. According to the connecting structure of the shifting teeth 24 and the shifting rod 13, the shifting teeth can shift the gear to rotate when the shifting rod moves downwards, the shifting teeth can retract to one side of the shifting rod when the shifting rod moves upwards, so that the gear cannot be reversed, the gear can be intermittently rotated, the shifting rod can completely move downwards once every time, all the shifting teeth shift the gear once to rotate the gear by 45 degrees, and the gear rotates for one circle (360 degrees) after each downward movement of 8 times of the shifting teeth, so that one time of air supply and one time of air exhalation in a mouth of a person to be saved are realized.

Furthermore, a reverse rotation preventing structure for preventing the gear shaft 30 from reversing is arranged between the gear shaft 30 and the inner wall of the compressed gas temporary storage cavity 14, and the reverse rotation preventing structure can adopt a ratchet and pawl structure to avoid the reverse rotation of the gear.

Furthermore, the part of the lower end of the longitudinal push-pull rod 6 close to the pressure head 12 is a telescopic structure with adjustable length, which can be adjusted according to the body thickness of the chest of different rescuees, thereby ensuring that the pressing of the pressure head is most effective.

Further, the rotating shaft 11 is rotatably connected to the upper end of the frame body 2 through a bearing 21.

Further, the thickness d of the base plate 1 increases gradually from one end to the other end, from substantially zero thickness to about 2-3 cm, thereby facilitating the insertion of the base plate 1 under a patient who is lying down. The frame body 2 is a foldable frame body, and comprises a bottom plate 1 and can also adopt a foldable structure, so that the frame body is convenient to carry and store.

In summary, the invention provides a cardiopulmonary resuscitation device operated by a single person, which can simultaneously realize the heart pressing emergency operation including mouth-to-mouth blowing when a single rescuer performs cardiopulmonary resuscitation emergency treatment, greatly facilitates the operation of rescuers, and reduces the operation difficulty. Specifically, the hand crank handle can rhythmically realize the up-and-down movement of the pressure head so as to press the heart of a person, and meanwhile, the gear shifting teeth on the shifting rod drive the gear to rotate by an angle after being pressed up and down each time, wherein the number n of teeth of the gear 19 is 8 times of the number n' of teeth of the shifting teeth 24, and the longitudinal push-pull rod 6 carries out push-and-pull action for 8 times each time, the shifting rod 13 moves up and down 8 times along with the piston 10, so that the first compressed gas through hole 19-2 and the connection of the first compressed gas through hole 19-2 on the gear 19 are realized, so that gas is conveyed into the mouth of the person once, the gas is conveyed along with the rotation of the gear after the gas conveying once, and while the first compressed gas through hole 19-2 is blocked, the third compressed gas through hole 28, the second compressed gas through hole 23-1 are connected with the C-shaped groove 19-1, and the first human body exhaled gas through hole 23-2, The second person exhales through the holes 27, thereby allowing the air in the mouth of the person to be rescued to be exhausted to the outside atmosphere; by the positional presetting, the present invention does not communicate the first human body exhalation gas passing hole 23-2 with the first compressed gas passing hole 19-2 throughout the operation to avoid directly discharging the generated compressed gas into the outside atmosphere. The invention has simple structure and convenient operation, and can realize regular heart pressing operation and regular gas transmission and exhaust for human body at the same time.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. The utility model provides a cardiopulmonary resuscitation device of one-man operation, includes bottom plate (1) and support body (2), support body (2) are fixed in on bottom plate (1), its characterized in that still includes:

the rotating shaft (11) is rotatably connected to the upper end of the frame body (2), and one end of the rotating shaft (11) is provided with a hand crank (22);

the cam (4) is fixedly connected with the rotating shaft (11) in a coaxial line manner, and an annular sliding groove (4-1) is formed in the cam (4) along the circumferential direction of the cam;

the sliding block (5) is connected with the annular sliding groove (4-1) in a sliding manner;

the longitudinal push-pull rod (6) is arranged on the frame body (2) through a longitudinal guide cylinder (20), the upper end of the longitudinal push-pull rod (6) is fixedly connected with the sliding block (5), and the lower end of the longitudinal push-pull rod (6) is provided with a pressure head (12);

and the gas supply mechanism is connected with the longitudinal push-pull rod (6), generates compressed gas through the push-pull power of the longitudinal push-pull rod (6), and releases the compressed gas into the mouth of the rescuee once after the longitudinal push-pull rod (6) performs push-pull action for 8 times.

2. A single-operated cardiopulmonary resuscitation device according to claim 1, wherein said air supply means comprises:

the left end of the transverse rod (8) is fixedly connected with the side wall of the longitudinal push-pull rod (6);

inflator (7) comprising: a cylinder (7); the piston (10) is connected in the cylinder (7) in a longitudinally sliding manner along the cylinder (7); the upper end of the piston rod (9) is fixedly connected with the right end of the transverse rod (8), and the lower end of the piston rod is fixedly connected with the piston; the air inlet one-way valve (3) is arranged on the side wall of the cylinder body (7) and is used for enabling the outside atmosphere to enter the cylinder body (7); the air outlet one-way valve (18) is arranged at the lower end of the cylinder body (7) and is used for outputting air in the cylinder body (7);

the temporary storage cavity (14) for compressed gas is fixedly connected with the lower end of the inflator pump (7), the air outlet one-way valve (18) is arranged between the cylinder body (7) and the temporary storage cavity (14) for compressed gas and is used for conveying the gas in the cylinder body (7) to the temporary storage cavity (14) for compressed gas, and the temporary storage cavity (14) for compressed gas is fixedly connected with the frame body (2);

compressed gas intermittent output structure includes: the upper end of the shifting rod (13) is fixedly connected with the lower surface of the piston (10), the lower end of the shifting rod passes through a partition wall (31) between the inflator (7) and the temporary compressed gas storage cavity (14) from the inflator (7) and extends into the temporary compressed gas storage cavity (14), and a plurality of shifting teeth (24) are arranged at the lower end of the shifting rod (13) along the longitudinal direction of the shifting rod; the gear (19) is arranged in the compressed gas temporary storage cavity (14) through a gear shaft (30), wherein the gear shaft (30) is rotatably connected to the inner wall of the compressed gas temporary storage cavity (14), one side end face of the gear (19) is opposite to one inner side wall of the compressed gas temporary storage cavity (14), a C-shaped groove (19-1) is formed in the side end face, the circle center of the C-shaped groove (19-1) is overlapped with the center of the gear (19), a first compressed gas through hole (19-2) penetrating through the thickness of the gear (19) is formed in an opening of the gear (19) located in the C-shaped groove (19-1), and the gear (19) is meshed with the shifting teeth (24); the sealing gasket (23) is pasted on the inner side wall of the compressed gas temporary storage cavity (14), the end face of the side of the gear (19) provided with the C-shaped groove (19-1) is attached to the sealing gasket, the sealing gasket (23) is also provided with a second compressed gas through hole (23-1) and a first human body exhaled gas through hole (23-2) respectively, and the distances between the second compressed gas through hole (23-1) and the first human body exhaled gas through hole (23-2) and the axis of the gear shaft (30) are both larger than the radius of the inner side wall of the C-shaped groove (19-1) and smaller than the radius of the outer side wall of the C-shaped groove (19-1); the third compressed gas through hole (28) is formed in the side wall of the compressed gas temporary storage cavity (14) of the sticking sealing gasket (23), the third compressed gas through hole (28) is connected with the gas transmission joint (29), and the gas transmission joint (29) is arranged on the outer side wall of the compressed gas temporary storage cavity (14); the second human body exhaled air through hole (27) is formed in the side wall of the compressed air temporary storage cavity (14) of the sticking sealing gasket (23) and communicated with the first human body exhaled air through hole (23-2);

a gas delivery assembly comprising: one end of the gas conveying pipe (15) is connected with the gas conveying joint (29); and the air supply mask (17) is connected with the other end of the air delivery pipe (15), and the air supply mask (17) is provided with a binding belt (16) for binding the air supply mask to the head of a person.

3. A single-operated cardiopulmonary resuscitation device according to claim 2, wherein the gear wheel (19) has 8 times the number of teeth of the push-pull lever (24), and the push-pull lever (13) delivers gas into the mouth of the person after each 8 up-and-down movements of the piston (10) with each 8 times of push-pull movement of the longitudinal push-pull lever (6).

4. A single-operated cardiopulmonary resuscitation device according to claim 2, wherein each of the shift gears (24) is hinged to the shift lever (13), a shift gear stopper (25) fixed to the shift lever (13) is provided above each of the shift gears (24), and the shift gear stopper (25) is configured to limit the corresponding shift gear (24) from exceeding an upper rotation limit; a supporting spring (26) connected with the shifting teeth (24) and the shifting rod (13) is arranged below each shifting tooth (24), and when the shifting teeth (24) are not in contact with the teeth of the gear (19), the supporting spring (26) can form upward supporting force on the shifting teeth (24), so that the shifting teeth (24) are just in a state of being perpendicular to the shifting rod (13).

5. A single person operated cardiopulmonary resuscitation device as claimed in claim 4, wherein a reverse preventing structure for preventing reverse rotation of said gear shaft (30) is further provided between said gear shaft (30) and an inner wall of said compressed gas temporary storage chamber (14).

6. A single-operated cardiopulmonary resuscitation device according to claim 1 or 2, characterised in that the portion of the longitudinal push-pull rod (6) adjacent the ram (12) is arranged in a telescopic configuration with adjustable length.

7. A single person operated cardiopulmonary resuscitation device according to claim 1 or 2, wherein said shaft (11) is rotatably connected to the upper end of said frame (2) by means of a bearing (21).

8. A single-operated cardiopulmonary resuscitation device as claimed in claim 1, wherein said backboard (1) gradually increases in thickness from one end to the other.

9. A single-operated cardiopulmonary resuscitation device according to claim 1, wherein the base plate (1) and the frame (2) are each provided with a foldable configuration for easy carrying and storage.