阅读说明：本技术 心肺复苏辅助装置 (Cardiopulmonary resuscitation auxiliary device ) 是由 胡莹莹 刘奎 李燕春 王俊红 魏玉玲 任乐宁 于 2021-09-26 设计创作，主要内容包括：针对上述情况,为克服现有技术之缺陷,本发明之目的就是提供心肺复苏辅助装置,可有效解决儿童患者按压深度与儿童实际胸廓厚度之间的关系；其解决的技术方案是,包括水平放置的矩形的壳体,壳体下端面中部为向上凸起且贯穿前后端面的圆弧面,壳体上端面的中部固定有圆筒,圆筒的下方有竖杆,竖杆中部装有楔形块,壳体的上方有开口朝下U形板,壳体内装有左右方向放置转轴,壳体内的左右两侧各有一个矩形杆,矩形杆的下端探出壳体下端面,矩形杆的上下移动能带动楔形块的前后移动；当矩形杆上下移动时,U形板在楔形块上倾斜面的作用下上下移动,U形板移动方向与矩形杆移动方向相反,矩形块移动的距离是U形板移动距离的三倍。(In view of the above situation, the present invention aims to provide a cardiopulmonary resuscitation device, which can effectively solve the relationship between the compression depth of a child patient and the actual thickness of the thorax of the child; the technical scheme includes that the device comprises a horizontally-placed rectangular shell, the middle of the lower end face of the shell is an arc surface which is upwards convex and penetrates through the front end face and the rear end face, a cylinder is fixed in the middle of the upper end face of the shell, a vertical rod is arranged below the cylinder, a wedge block is arranged in the middle of the vertical rod, a U-shaped plate with a downward opening is arranged above the shell, a rotating shaft is placed in the left direction and the right direction in the shell, a rectangular rod is arranged on each of the left side and the right side in the shell, the lower end of the rectangular rod extends out of the lower end face of the shell, and the wedge block can be driven to move back and forth by up-down movement of the rectangular rod; when the rectangular rod moves up and down, the U-shaped plate moves up and down under the action of the inclined surface on the wedge-shaped block, the moving direction of the U-shaped plate is opposite to that of the rectangular rod, and the moving distance of the rectangular block is three times that of the U-shaped plate.)

1. The cardiopulmonary resuscitation assisting device is characterized by comprising a horizontally placed rectangular shell (1), the middle part of the lower end face of the shell (1) is an arc surface which is upwards convex and penetrates through the front end face and the rear end face, a cylinder (2) with an opening at the lower end is fixed at the middle part of the upper end face of the shell (1), a through hole is formed in the upper end face of the shell (1) below the cylinder (2), a vertical rod (3) which can only move up and down is arranged in the through hole, a spring is fixed on the upper end face of the vertical rod (3), the other end of the spring is fixed on the upper end face in the cylinder (2), the spring always provides an upward force for the vertical rod (3), the vertical rod (3) moves up and down along the shell (1) through the spring, the vertical rod (3) penetrates through the arc surface at the lower end of the shell (1), a wedge-shaped block (4) which moves back and forth along the vertical rod (3) is arranged at the middle part of the vertical rod (3), the upper end face of the wedge-shaped block (4) is an inclined face, a U-shaped plate (5) which can move up and down can move, the bottom of the U-shaped plate (5) is arranged above the cylinder (2), the lower end of the U-shaped plate (5) penetrates through the upper end face of the shell (1) and is in contact with the upper end face of the wedge-shaped block (4), the U-shaped plate (5) can move downwards under the action of external force and can drive the vertical rod (3) to move downwards through the wedge-shaped block (4), and the cylinder (2) can provide the U-shaped plate (5) with the lowest limit for downward movement;

the left and right rotating shafts (6) are arranged in the shell (1), the rotating shafts (6) can rotate and the rotating shafts (6) can be fixed, the left side and the right side in the shell (1) are respectively provided with a vertically arranged rectangular rod (7), the lower end of each rectangular rod (7) extends out of the lower end face of the shell (1), the rotating shafts (6) can drive the rectangular rods (7) to move upwards or downwards relative to the shell (1), and the up-down movement of the rectangular rods (7) can drive the wedge blocks (4) to move forwards and backwards;

when the rectangular rod (7) moves up and down, the U-shaped plate (5) moves up and down under the action of the inclined surface on the wedge-shaped block (4), the moving direction of the U-shaped plate (5) is opposite to the moving direction of the rectangular rod (7), and the moving distance of the rectangular block is three times that of the U-shaped plate (5).

2. The cardiopulmonary resuscitation device according to claim 1, wherein the upper end of the vertical rod (3) is square, the through hole formed in the upper end surface of the shell (1) below the cylinder (2) is a square hole, the square part of the upper end of the vertical rod (3) passes through the square hole and is not separated from the square hole all the time, and the square hole prevents the vertical rod (3) from rotating.

3. The cardiopulmonary resuscitation assisting device according to claim 1, wherein a horizontally placed flat plate (8) is fixed in the middle of the vertical rod (3), the wedge block (4) is placed on the flat plate (8), a sliding groove penetrating through the front end surface and the rear end surface is formed in the upper end surface of the flat plate (8), a sliding block is arranged on the lower end surface of the wedge block (4), the sliding block is placed in the sliding groove, a straight groove opening penetrating through the upper end surface and the lower end surface of the wedge block (4) is formed in the upper end surface of the wedge block (4), the straight groove opening is placed in the front-rear direction, the vertical rod (3) is placed in the straight groove opening, and the upper end surface of the wedge block (4) inclines forwards;

the adjacent side of rectangular pole (7) is fixed with first round bar (9) that is on a parallel with the adjacent face of rectangular pole (7), the upper end slope of first round bar (9) is backward, the rear side of wedge (4) up end is fixed with two vertical form second round bar (10), second round bar (10) are located the left and right sides of wedge (4), be fixed with third round bar (11) on the up end in casing (1), the lower extreme rotation of third round bar (11) is installed flat bar (12) that can the horizontal rotation, the rotation center is located the middle part of flat bar (12), the logical groove of an up-and-down direction is respectively seted up at both ends about flat bar (12), it places along flat bar (12) length direction to lead to the groove, the logical inslot of corresponding side is arranged respectively in to first round bar (9) and second round bar (10), the second round bar can be in leading to the axial displacement and do not deviate from in the groove.

4. The cardiopulmonary resuscitation device according to claim 1, wherein the lower end of the vertical rod (3) is fixed with a pressing block (13), and the lower end surface of the pressing block (13) is a circular arc with a convex middle part.

5. The cardiopulmonary resuscitation device according to claim 1, wherein the first gears (14) are fixed to left and right ends of the rotating shaft (6), the side surface of the rectangular rod (7) is provided with a toothed surface, the two first gears (14) are respectively engaged with the toothed surfaces on the corresponding sides, the lower end of the rectangular rod (7) is fixed with a horizontally placed support plate (15), and the support plates (15) are located on left and right sides of the arc-shaped surface.

6. The cardiopulmonary resuscitation assisting device according to claim 1, wherein a first rectangular block (16) is fixed in the middle of the inner rear end face of the housing (1), a sunken groove is formed in the right end face of the first rectangular block (16), a pin (17) is installed in the sunken groove, a spring is installed between the bottom of the sunken groove and the pin (17), the spring always applies a force to the pin (17) in the rightward direction, a second rectangular block (18) is fixed at the right end of the pin (17), and a toothed groove is formed in the front end face of the second rectangular block (18);

a vertical square rod (19) is arranged on the right side of the second rectangular block (18), the upper end of the square rod (19) penetrates through the upper end face of the shell (1) and can move up and down, the lower end of the square rod (19) penetrates through the arc-shaped face, a trapezoidal block (20) is fixed on the left end face of the middle part of the square rod (19), and the lower end face of the trapezoidal block (20) is an inclined face which is high at the left and low at the right;

a second gear (21) is fixed in the middle of the rotating shaft (6), and the second gear (21) can be meshed with a tooth-shaped groove on the second rectangular block (18).

7. The cardiopulmonary resuscitation device according to claim 1, wherein the front end of the inside of the housing (1) is provided with a rotating rod (22) in the front-back direction, the rotating rod (22) protrudes out of the front end face of the housing (1), the middle part of the rotating rod (22) is provided with a spring (25), and the rotating rod (22) can drive the spring (25) to rotate to wind;

disc (23) are equipped with to the rear end of bull stick (22), are fixed with cylindrical protrusion on the circumference of disc (23) rear end face, and articulated on the cylindrical protrusion have straight-bar (24) of placing from top to bottom, have seted up the hole of stepping down on casing (1), and the upper end of straight-bar (24) is through stepping down the hole and stretching out casing (1) up end, and disc (23) and straight-bar (24) constitute crank rocker structure.

Technical Field

The invention relates to cardiopulmonary resuscitation, in particular to a cardiopulmonary resuscitation auxiliary device.

Background

Cardiopulmonary resuscitation is a life-saving technique taken for the heart and breath of sudden cardiac arrest and is used for chest compressions on patients with acute cardiac arrest, where the compression depth is at least 5 cm, but more than 6 cm should be avoided. For children (including infants [ less than one year old ] to the beginning of puberty), the depth of compression is about one third of the chest anteroposterior diameter, corresponding to 4 cm for infants and 5 cm for children.

There are two types of chest cardiac compression:

firstly, manual compression is needed, and a doctor needs to do external chest compression on a patient; manual pressing has more problems, the main problem is that a non-professional operator cannot perform pressing, otherwise, the pressing is not in place or is easily damaged for the second time, so that medical workers basically operate, and sudden cardiac arrest outside a hospital cannot be rescued in time;

secondly, the cardio-pulmonary resuscitation device is used for automatic compression, the compression depth is at least 5 cm, but the adjustment can be easily avoided being more than 6 cm, but the adjustment can be performed only according to the condition that children (including infants (less than one year) to children beginning at puberty) are about 4 cm equivalent to infants and 5 cm equivalent to children, and the simple adjustment can not easily achieve the compression effect due to different stage development conditions of the children.

Disclosure of Invention

In view of the above situation, the present invention provides a cardiopulmonary resuscitation device, which can effectively solve the relationship between the compression depth of a child patient and the actual thickness of the thorax of the child.

The technical scheme includes that the device comprises a horizontally placed rectangular shell, the middle portion of the lower end face of the shell is an arc surface which is upwards convex and penetrates through the front end face and the rear end face, a cylinder with an opening at the lower end is fixed at the middle portion of the upper end face of the shell, a through hole is formed in the upper end face of the shell below the cylinder, a vertical rod which can only move up and down is arranged in the through hole, a spring is fixed at the upper end face of the vertical rod, the other end of the spring is fixed at the upper end face in the cylinder, the spring always provides an upward force for the vertical rod, the vertical rod moves up and down along the shell through the spring, the vertical rod penetrates through the arc surface at the lower end of the shell, a wedge block which moves back and forth along the vertical rod is arranged at the middle portion of the vertical rod, the upper end face of the wedge block is an inclined face, a U-shaped plate which can move up and down and has an opening facing downwards is arranged above the cylinder, the lower end of the U-shaped plate penetrates through the upper end face of the shell and is contacted with the upper end face of the wedge block, the U-shaped plate can move downwards under the action of external force, the cylinder can provide the U-shaped plate with the lowest limit for moving downwards;

the rotating shaft is arranged in the shell in the left-right direction, can rotate and can be fixed, a vertically arranged rectangular rod is arranged on each of the left side and the right side in the shell, the lower end of each rectangular rod extends out of the lower end face of the shell, the rotating shaft can drive the rectangular rods to move upwards or downwards relative to the shell, and the wedge blocks can be driven to move forwards and backwards by the up-down movement of the rectangular rods;

when the rectangular rod moves up and down, the U-shaped plate moves up and down under the action of the inclined surface on the wedge-shaped block, the moving direction of the U-shaped plate is opposite to that of the rectangular rod, and the moving distance of the rectangular block is three times that of the U-shaped plate.

The upper end of the vertical rod is square, the through hole formed in the upper end face of the shell below the cylinder is a square hole, the square part in the upper end of the vertical rod penetrates through the square hole, the square part is always not separated from the square hole, and the square hole prevents the vertical rod from rotating.

A horizontally placed flat plate is fixed in the middle of the vertical rod, the wedge block is placed on the flat plate, a sliding groove penetrating through the front end surface and the rear end surface is formed in the upper end surface of the flat plate, a sliding block is arranged on the lower end surface of the wedge block and is placed in the sliding groove, a straight groove opening penetrating through the upper end surface and the lower end surface of the wedge block is formed in the upper end surface of the wedge block, the straight groove opening is placed in the front-back direction, the vertical rod is placed in the straight groove opening, and the upper end surface of the wedge block inclines forwards;

the adjacent side of rectangle pole is fixed with the first pole that is on a parallel with the adjacent face of rectangle pole, the upper end slope of first pole is backward, the rear side of wedge up end is fixed with two vertical form second poles, the second pole is located the left and right sides of wedge, be fixed with the third pole on the up end in the casing, the lower extreme rotary mounting of third pole has the flat bar that can the horizontal rotation, rotation center is located the middle part of flat bar, the logical groove of direction about the flat bar respectively has been seted up at both ends, it places to lead to groove along flat bar length direction, the logical inslot of corresponding side is arranged respectively in to first pole and second pole, the second pole can be in leading to the inslot axial displacement and do not deviate from.

The lower end of the vertical rod is fixed with a pressing block, and the lower end surface of the pressing block is in the shape of a circular arc with a convex middle part.

First gears are fixed at the left end and the right end of the rotating shaft, a toothed surface is formed in the side face of the rectangular rod, the two first gears are respectively meshed with the toothed surfaces of the corresponding sides, a horizontally-placed supporting plate is fixed at the lower end of the rectangular rod, and the supporting plates are located on the left side and the right side of the arc-shaped surface.

A first rectangular block is fixed in the middle of the rear end face in the shell, a sinking groove is formed in the right end face of the first rectangular block, a pin is installed in the sinking groove, a spring is installed between the bottom of the sinking groove and the pin and always applies a rightward force to the pin, a second rectangular block is fixed at the right end of the pin, and a tooth-shaped groove is formed in the front end face of the second rectangular block;

a vertical square rod is arranged on the right side of the second rectangular block, the upper end of the square rod penetrates through the upper end face of the shell and can move up and down, the lower end of the square rod penetrates through the arc-shaped face, a trapezoidal block is fixed on the left end face of the middle part of the square rod, and the lower end face of the trapezoidal block is an inclined face which is high at the left side and low at the right side;

a second gear is fixed in the middle of the rotating shaft and can be meshed with a tooth-shaped groove in the second rectangular block;

when the square bar moves downwards, the trapezoidal block pushes the second rectangular block to move leftwards under the action of the inclined plane, after the square bar moves downwards, the second rectangular block is arranged on the left end face of the trapezoidal block, the trapezoidal block can prevent the second rectangular block from being meshed with the second gear, after the square bar moves upwards, the trapezoidal block on the square bar is separated from the second rectangular block, and the second rectangular block is meshed with the second gear under the thrust of the spring.

The front end in the shell is provided with a rotating rod in the front-back direction, the rotating rod extends out of the front end face of the shell, the middle part of the rotating rod is provided with a clockwork spring, and the rotating rod can drive the clockwork spring to apply force by rotating;

a disc is arranged at the rear end of the rotating rod, a cylindrical protrusion is fixed on the circumference of the rear end face of the disc, a straight rod which is arranged up and down is hinged on the cylindrical protrusion, a abdicating hole is formed in the shell, the upper end of the straight rod extends out of the upper end face of the shell through the abdicating hole, and the disc and the straight rod form a crank rocker structure;

when the spring drives the disc to rotate for one circle, the straight rod can move upwards once.

The U-shaped plate is ingenious in structure, the height of the rectangular rod is adjusted through the rotating shaft, the wedge block is adjusted forwards and backwards through the rectangular rod, the wedge surface on the wedge block enables the U-shaped plate to be adjusted relative to the vertical rod, and the vertical distance of the U-shaped plate moving relative to the vertical rod is one third of the vertical distance of the rectangular rod moving relative to the shell; according to the design of the end face of the bottom of the U-shaped plate and the upper end face of the cylinder, the lowest limit of one third of pressing depth can be better guaranteed.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a front view of the present invention with the front end of the housing removed.

Fig. 3 is a left side sectional view of the present invention.

FIG. 4 is a top cross-sectional view of the invention A-A.

Fig. 5 is a top cross-sectional view of the present invention with the upper end face of the housing removed.

Fig. 6 is an enlarged view of the present invention at B.

Fig. 7 is a front view of the present invention with the front face of the housing removed and with only the square rods remaining attached.

Fig. 8 is a perspective view of a wedge block of the present invention and its mating.

Fig. 9 is an attached perspective view of the square bar of the present invention.

FIG. 10 is a perspective view of the crank and rocker device of the present invention.

Fig. 11 is a perspective view of a rectangular bar and its mating of the present invention.

Fig. 12 is a front view of the front end of the housing removed for adjustment before pressing operation of the present invention.

Fig. 13 is a working state diagram of the square pole of the invention after moving downwards.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 13, the invention comprises a horizontally placed rectangular shell 1, the middle part of the lower end surface of the shell 1 is an arc surface which is convex upwards and penetrates through the front end surface and the rear end surface, the middle part of the upper end surface of the shell 1 is fixed with a cylinder 2 with an opening at the lower end, the upper end surface of the shell 1 below the cylinder 2 is provided with a through hole, a vertical rod 3 which can only move up and down is arranged in the through hole, the upper end surface of the vertical rod 3 is fixed with a spring, the other end of the spring is fixed on the upper end surface in the cylinder 2, the spring always gives an upward force to the vertical rod 3, the vertical rod 3 moves up and down along the shell 1 through the spring, the vertical rod 3 penetrates through the arc surface at the lower end of the shell 1, the middle part of the vertical rod 3 is provided with a wedge block 4 which moves back and forth along the vertical rod 3, the upper end surface of the wedge block 4 is an inclined surface, a U-shaped plate 5 which can move up and down and has an opening at the upper end surface facing downwards is arranged above the shell 1, the bottom of the cylinder 2, the U-shaped plate 5, the lower end of the U-shaped plate 5 penetrates through the upper end surface of the shell 1 and contacts with the wedge block 4, the U-shaped plate 5 can move downwards under the action of external force, and the wedge block 4 drives the vertical rod 3 to move downwards, and the cylinder 2 can provide the U-shaped plate 5 with the lowest limit for downward movement;

a rotating shaft 6 is arranged in the shell 1 in the left-right direction, the rotating shaft 6 can rotate and the rotating shaft 6 can be fixed, a vertically arranged rectangular rod 7 is respectively arranged on the left side and the right side in the shell 1, the lower end of the rectangular rod 7 extends out of the lower end face of the shell 1, the rotating shaft 6 can rotate to drive the rectangular rod 7 to move upwards or downwards relative to the shell 1, and the up-down movement of the rectangular rod 7 can drive the wedge block 4 to move forwards and backwards;

when the rectangular rod 7 moves up and down, the U-shaped plate 5 moves up and down under the action of the inclined surface on the wedge-shaped block 4, the moving direction of the U-shaped plate 5 is opposite to that of the rectangular rod 7, and the moving distance of the rectangular block is three times that of the U-shaped plate 5.

The upper end of the vertical rod 3 is square, the through hole formed in the upper end face of the shell 1 below the cylinder 2 is a square hole, the square part in the upper end of the vertical rod 3 penetrates through the square hole, the square part is always not separated from the square hole, and the square hole prevents the vertical rod 3 from rotating.

A flat plate 8 which is horizontally placed is fixed in the middle of the vertical rod 3, the wedge block 4 is arranged on the flat plate 8, a sliding groove which penetrates through the front end face and the rear end face is formed in the upper end face of the flat plate 8, a sliding block is arranged on the lower end face of the wedge block 4 and is arranged in the sliding groove, a straight groove opening which penetrates through the upper end face and the lower end face of the wedge block 4 is formed in the upper end face of the wedge block 4, the straight groove opening is placed in the front-rear direction, the vertical rod 3 is arranged in the straight groove opening, and the upper end face of the wedge block 4 inclines forwards;

the adjacent side of rectangular pole 7 is fixed with the first round bar 9 that is on a parallel with the adjacent face of rectangular pole 7, the upper end slope of first round bar 9 is backward, the rear side of wedge 4 up end is fixed with two vertical form second round bars 10, second round bar 10 is located the left and right sides of wedge 4, be fixed with third round bar 11 on the up end in the casing 1, the lower extreme rotation of third round bar 11 installs ability horizontal rotation's flat bar 12, the rotation center is located the middle part of flat bar 12, the logical groove of direction from top to bottom is respectively seted up at both ends about flat bar 12, it places along flat bar 12 length direction to lead to the groove, the logical inslot of corresponding side is arranged respectively in to first round bar 9 and second round bar 10, the second round bar can lead to axial displacement and do not deviate from in leading to the groove.

The lower end of the vertical rod 3 is fixed with a pressing block 13, and the lower end face of the pressing block 13 is in the shape of a circular arc with a convex middle part.

First gears 14 are fixed at the left end and the right end of the rotating shaft 6, a toothed surface is formed on the side surface of the rectangular rod 7, the two first gears 14 are respectively meshed with the toothed surfaces of the corresponding sides, a horizontally placed supporting plate 15 is fixed at the lower end of the rectangular rod 7, and the supporting plates 15 are located at the left side and the right side of the arc-shaped surface.

A first rectangular block 16 is fixed in the middle of the inner rear end face of the shell 1, a sinking groove is formed in the right end face of the first rectangular block 16, a pin 17 is installed in the sinking groove, a spring is installed between the bottom of the sinking groove and the pin 17 and always applies a rightward force to the pin 17, a second rectangular block 18 is fixed at the right end of the pin 17, and a tooth-shaped groove is formed in the front end face of the second rectangular block 18;

a vertical square rod 19 is arranged on the right side of the second rectangular block 18, the upper end of the square rod 19 penetrates through the upper end face of the shell 1 and can move up and down, the lower end of the square rod 19 penetrates through the arc-shaped face, a trapezoidal block 20 is fixed on the left end face of the middle part of the square rod 19, and the lower end face of the trapezoidal block 20 is an inclined face which is high at the left side and low at the right side;

a second gear 21 is fixed in the middle of the rotating shaft 6, and the second gear 21 can be meshed with a tooth-shaped groove on the second rectangular block 18;

when the square rod 19 moves downwards, the trapezoidal block 20 pushes the second rectangular block 18 to move leftwards under the action of the inclined plane, after the square rod 19 moves downwards, the second rectangular block 18 is placed on the left end face of the trapezoidal block 20, the trapezoidal block 20 can prevent the second rectangular block 18 from being meshed with the second gear 21, after the square rod 19 moves upwards, the trapezoidal block 20 on the square rod 19 is separated from the second rectangular block 18, and the second rectangular block 18 is meshed with the second gear 21 under the thrust of the spring.

The front end in the shell 1 is provided with a rotating rod 22 in the front-back direction, the rotating rod 22 extends out of the front end face of the shell 1, the middle part of the rotating rod 22 is provided with a clockwork spring 25, and the rotating rod 22 rotates to drive the clockwork spring 25 to wind;

a disc 23 is arranged at the rear end of the rotating rod 22, a cylindrical protrusion is fixed on the circumference of the rear end face of the disc 23, a straight rod 24 which is arranged up and down is hinged on the cylindrical protrusion, a abdicating hole is formed in the shell 1, the upper end of the straight rod 24 extends out of the upper end face of the shell 1 through the abdicating hole, and the disc 23 and the straight rod 24 form a crank rocker structure;

the straight rod 24 can move up once every time the spring 25 rotates the disc 23.

In the operating state of the invention, the device is placed on a horizontal plane through the support plate 15, the vertical distance between the lower end surface of the support plate 15 and the lower end surface of the pressing block 13 is three times of the vertical distance between the bottom of the U-shaped plate 5 and the upper end surface of the cylinder 2, the vertical distance between the lower end surface of the support plate 15 and the lower end surface of the pressing block 13 is used for placing children to be pressed, and the vertical distance between the bottom of the U-shaped plate 5 and the upper end surface of the cylinder 2 is used for pressing.

According to the adjustment before use, the square rod 19 is pressed downwards, the square rod 19 drives the trapezoidal block 20 to move downwards, the lower end face of the trapezoidal block 20 pushes the second rectangular block 18 to move leftwards, after the second rectangular block 18 is separated from the lower end face of the trapezoidal block 20 and is in contact with the left end face of the rectangular block, the second rectangular block 18 is separated from the second gear 21 in the middle of the rotating shaft 6, and the lower end of the square rod 19 is located on the lower side of the pressing block 13;

then the rotating shaft 6 is rotated, the rotating shaft 6 drives the first gear 14 to rotate, and due to the fact that the toothed surface on the rectangular rod 7 is meshed with the gear, the rotating shaft 6 is driven to move upwards relative to the rectangular rod 7 when the first gear 14 rotates, the shell 1 moves upwards along with the rotating shaft 6 until the vertical distance from the lower end face of the supporting plate 15 to the lower end face of the pressing block 13 is larger than the thickness of the thorax of the child patient, and the pressing block 13 is prevented from pressing and injuring the child patient when the shell 1 is placed on the child patient;

when the shell 1 moves upwards relative to the rectangular rod 7, due to the fact that the spring is arranged at the upper end of the vertical rod 3, the vertical rod 3 moves upwards along with the shell 1 under the tensile force of the spring, the flat plate 8 on the vertical rod 3 moves upwards along with the vertical rod 3, the wedge block 4 moves upwards along with the flat plate 8 due to the sliding groove in the flat plate 8 and the sliding block below the wedge block 4, and the lower end face of the U-shaped plate 5 moves upwards along with the wedge block 4 under the support of the upper end face of the wedge block 4;

because the third round bar 11 in the shell 1 is fixed with the shell 1, the third round bar 11 moves upwards along with the shell 1, the flat bar 12 connected with the lower end of the third round bar 11 in a rotating way moves upwards along with the third round bar 11, when the flat bar 12 moves upwards, the first round bar 9 fixed on the rectangular bar 7 moves downwards relative to the flat bar 12, because the upper end of the first round bar 9 inclines backwards, the first round bar 9 pushes the flat bar 12 to rotate horizontally around the third round bar 11, when the flat bar 12 rotates horizontally, the horizontal bar 12 pushes the second round bar 10 to move forwards, the second round bar 10 drives the wedge block 4 to move forwards, the U-shaped plate 5 moves upwards relative to the vertical bar 3 under the pushing of the wedge face on the wedge block 4, the lower end face of the U-shaped plate 5 is always contacted with the upper end face of the wedge block 4, the distance of the U-shaped plate 5 moving upwards relative to the vertical bar 3 is one third of the distance of the shell 1 moving upwards relative to the rectangular bar 7, at this time, the vertical distance between the lower end face of the supporting plate 15 and the lower end face of the pressing block 13 is still three times the vertical distance between the bottom of the U-shaped plate 5 and the upper end face of the cylinder 2;

when the adjustable cardio-pulmonary resuscitation device is used, the arc-shaped surface of the adjusted shell 1 is buckled on a child patient needing cardiopulmonary resuscitation, the pressing block 13 is arranged right above a position needing pressing, the supporting plate 15 fixed to the lower end of the rectangular rod 7 is arranged on a plane and is flush with the back of the child patient, then the rotating shaft 6 is rotated in the reverse direction, the rotating shaft 6 drives the first gear 14 to rotate, the first gear 14 moves downwards relative to the rectangular rod 7 when rotating, the rotating shaft 6 moves downwards along with the first gear 14, the shell 1 moves downwards along with the rotating shaft 6, the vertical rod 3 moves downwards along with the shell 1, and the pressing block 13 at the lower end of the vertical rod 3 approaches to the child patient along with the vertical rod 3;

when the shell 1 moves downwards, the lower end of the square rod 19 contacts with a child patient and stops moving downwards, the shell 1 still moves downwards, so that the square rod 19 moves upwards relative to the shell 1, when the left end face of the trapezoidal block 20 on the square rod 19 is separated from the right end face of the second rectangular block 18, the second trapezoidal block 20 moves rightwards rapidly under the pushing of the spring in the first rectangular block 16, the toothed surface on the front side of the second rectangular block 18 is meshed with the second gear 21, the pressing block 13 is just contacted with the child patient at the same time, the toothed surface on the second rectangular block 18 prevents the second gear 21 from continuing rotating, the second gear 21 stops the rotating shaft 6 from rotating, the shell 1 stops moving downwards, and the pressing block 13 is not pressed by the child patient;

in the downward movement process of the shell 1, the vertical rod 3 moves downward along with the shell 1, the wedge block 4 moves downward along with the vertical rod 3, the U-shaped plate 5 moves downward along with the wedge block 4 under the action of gravity, and the lower end face of the U-shaped plate 5 is always in contact with the wedge block 4; when the flat rod 12 on the third round rod 11 moves downwards along with the shell 1, the first round rod 9 pushes the flat rod 12 to horizontally rotate around the third round rod 11, the horizontal rod 12 pushes the second round rod 10 to move backwards, the second round rod 10 drives the wedge block 4 to move backwards, the U-shaped plate 5 moves downwards relative to the vertical rod 3 under the action of gravity, the lower end face of the U-shaped plate 5 is always in contact with the upper end face of the wedge block 4, the downward movement distance of the U-shaped plate 5 relative to the vertical rod 3 is one third of the downward movement distance of the shell 1 relative to the rectangular rod 7, and at the moment, the vertical distance between the lower end face of the supporting plate 15 and the lower end face of the pressing block 13 is still three times the vertical distance between the bottom of the U-shaped plate 5 and the upper end face of the cylinder 2;

the spring 25 is tightened, after the pressing block 13 is contacted with a child patient and the rotating shaft 6 stops rotating, the rotating rod 22 is manually rotated, the rotating rod 22 drives the spring 25 to be tightened, after the spring 25 is completely tightened, the rotating rod 22 is loosened, the spring 25 drives the disc 23 to rotate, the disc 23 drives the straight rod 24 to move up and down, when the spring 25 drives the disc 23 to rotate once, the straight rod 24 can move up and down once, and the time taken by the disc 23 to rotate once is consistent with the time taken by actual pressing once;

according to the invention, after all the adjustments are completed, an emergency worker places a hand on the upper end face of the U-shaped plate 5 and observes the up-and-down movement of the straight rod 24, when the straight rod 24 moves upwards, the hand presses downwards at a constant speed to enable the bottom of the U-shaped plate 5 to be in contact with the upper end face of the cylinder 2, the upper end face of the cylinder 2 provides the U-shaped plate 5 with the lowest limit position, and the vertical distance from the lower end face of the supporting plate 15 to the lower end face of the pressing block 13 is three times the vertical distance from the bottom of the U-shaped plate 5 to the upper end face of the cylinder 2, so that the downward pressing depth of the pressing block 13 is just one third of the thickness of the chest cavity of a child patient when the U-shaped plate 5 is in contact with the cylinder 2; when the U-shaped plate 5 moves downwards, the lower end face of the U-shaped plate 5 pushes the wedge block 4 downwards, the wedge block 4 pushes the flat plate 8 to move downwards, the vertical rod 3 moves downwards along with the flat plate 8, and the pressing block 13 at the lower end of the vertical rod 3 presses the child patient; after the pressing, the hand is quickly moved upwards, the spring at the upper end of the vertical rod 3 pulls the vertical rod 3 to move upwards, the vertical rod 3 drives the flat plate 8 to move upwards, the flat plate 8 pushes the wedge block 4 to move upwards, the wedge block 4 pushes the U-shaped rod to move upwards, and the U-shaped plate 5 completes one pressing action after moving upwards; when the straight rod 24 moves upwards again, the hand presses the U-shaped plate 5 downwards once again at a constant speed, and the U-shaped plate 5 is pressed circularly in the way; while observing the straight rod 24, the child patient is often kept track of the situation, and the child patient stops pressing in time after recovering.

The moving distance of the rectangular block is three times that of the U-shaped plate 5, the horizontal distance from the third round rod 11 to the second round rod 10 can be equal to the horizontal distance from the third round rod 11 to the second round rod 10, and the included angle between the upper end surface of the wedge-shaped block 4 and the horizontal plane is one third of the included angle between the axis of the first round rod 9 and the horizontal plane.

In order to realize that the moving distance of the rectangular rod 7 relative to the shell 11 and the moving distance of the U-shaped plate 5 relative to the vertical rod 3 are 3:1, the horizontal distance from the third round rod 11 to the second round rod 10, the included angle between the upper end surface of the wedge block 4 and the horizontal plane and the included angle between the axis of the first round rod 9 and the horizontal plane are changed; the solution is as follows: the horizontal distance from the third round rod 11 to the second round rod 10 is equal to the horizontal distance from the third round rod 11 to the second round rod 10, and the included angle between the upper end surface of the wedge block 4 and the horizontal plane is one third of the included angle between the axis of the first round rod 9 and the horizontal plane; and the like.

The invention has the advantages that:

by adjusting the vertical distance between the lower end surface of the front support plate 15 and the lower end surface of the pressing block 13 to be three times as long as the vertical distance between the bottom of the U-shaped plate 5 and the upper end surface of the cylinder 2, during adjustment, the height of the rectangular rod 7 can be adjusted through the rotating shaft 6, the wedge-shaped block 4 can be adjusted back and forth through the rectangular rod 7, the wedge-shaped surface on the wedge-shaped block 4 enables the U-shaped plate 5 to be adjusted relative to the vertical rod 3, the ratio of the moving distance of the rectangular rod 7 relative to the shell 1 to the moving distance of the U-shaped plate 5 relative to the vertical rod 3 is 3:1, the ratio of the compression depth to the thorax thickness is always 1:3, a series of operations of manually and independently adjusting the compression position, measuring the thorax thickness, calculating the compression depth, adjusting the compression depth and the like are not needed, the optimal time of first aid affected by fussy operations is reduced, according to the scheme, only the rotating shaft 6 needs to be rotated, so that the complex operation can be solved, and the possibility of errors in the complex operation due to independent adjustment is prevented; and can realize according to children patient's thorax thickness that the regulation of pressing the degree of depth reaches the best degree of depth of pressing, prevents to press the possibility that the deep causes secondary damage to children patient.

Through the design of the U-shaped plate 5, the lower end face of the U-shaped plate 5 is in contact with the wedge-shaped face on the wedge-shaped block 4, the distance between the bottom of the U-shaped plate 5 and the upper end face of the cylinder 2 can ensure the minimum limit of the pressing depth, and secondary injury to a child patient due to over-deep pressing is prevented; because there is minimum spacing settlement, when can making medical personnel can't in time arrive at the scene, non-medical personnel also can press the line operation to can in time stop pressing after children's patient resumes.

The square rod 19 moves upwards relative to the shell 1 on the body of the child patient, the tooth-shaped surface on the second rectangular block 18 is meshed with the second gear 21, the second rectangular block 18 prevents the second gear 21 from rotating, the rotating shaft 6 cannot continue to rotate, observation can be omitted at any time when the pressing block 13 is adjusted to be in contact with the body of the child patient, the adjusting time is shortened, and the problem of misoperation caused by tension or worries during operation can be prevented.

The time that the straight rod 24 is driven by the clockwork spring 25 to move up and down once is consistent with the time that the straight rod is actually pressed once, so that an operator can press according to the actual pressing specification better, and the problem that non-medical staff cannot know the pressing speed is solved.

Realize the adjustment and press through pure mechanical mode, guarantee the stable operation of device, prevent most because of the influence of factors such as the voltage unstability of power output and signal output's signal interference, better be applicable to different environment.