CN114129427A

CN114129427A - Reciprocating telescopic mechanism and external chest pressing device with same

Info

Publication number: CN114129427A
Application number: CN202111623557.7A
Authority: CN
Inventors: 孔伟方; 章军辉; 李宁
Original assignee: Sunlife Science (suzhou) Inc
Current assignee: Sunlife Science (suzhou) Inc
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-03-04
Also published as: WO2023123928A1

Abstract

A reciprocating telescopic mechanism comprises a rotating component, a pressing component, a driver and a working component, wherein the working component is arranged at the lower end of the pressing component and is used for squeezing the chest of a patient; the driving input position of the rotating component is connected with the driver, the sliding area of the rotating component is coupled with the pressing component, and the rotating component is used for converting the rotating motion of the driver into the linear motion of the pressing component; the actuation input location is located between the sliding region and the working assembly. The invention lowers the position of the driver, so that the center of gravity of the whole mechanism moves downwards, and the mechanism reduces the shaking during the pressing work.

Description

Reciprocating telescopic mechanism and external chest pressing device with same

Technical Field

The invention relates to the technical field of medical treatment, in particular to a reciprocating telescopic mechanism and an external chest compression device with the same.

Background

In the cardiopulmonary resuscitation process, chest compression is an important link, and directly influences whether a patient recovers spontaneous circulation and finally survives; chest compressions today fall largely into two theories of compression: heart pump theory mechanism and thoracic pump theory mechanism. The main principle of heart pump theory is to press directly on the sternum outside the heart to achieve the effect of pressing the heart at a single point, causing the heart to pump blood. The main principle of the thoracic pump theory is to squeeze the entire thorax of a patient, so as to realize the generation of heart pumping blood through the internal squeezing of the thorax. The mechanism of 3D chest compressions is a combination of cardiac and thoracic pump theory, involving both single point compressions and compression of the thorax.

Pressing outside the chest and pressing into artifical pressing and machinery and pressing two types, press the case to machinery outside the chest, in prior art, cardiopulmonary resuscitation appearance is the structure of carrying out the pressure (cardiopulmonary resuscitation appearance host computer promptly), carry out reciprocating motion through motor control press head, wherein the output shaft of motor all is upturned, and the position of motor also leans on to place, make the focus of pressing the device outside the chest concentrate on the upper portion of whole subassembly, rock easily when pressing, can lead to the interrupt of pressing even, directly influenced the effect of pressing, the success rate of resuscitation has been reduced.

Disclosure of Invention

The invention aims to provide a reciprocating telescopic mechanism and an external chest compression device with the same, so as to solve the technical problems.

In order to achieve the purpose, the invention provides the following technical scheme:

in a first aspect, the reciprocating telescopic mechanism comprises a rotating component, a pressing component, a driver and a working component,

the working assembly is arranged at the lower end of the pressing assembly and is used for squeezing the chest of the patient;

the driving input position of the rotating component is connected with the driver, the sliding area of the rotating component is coupled with the pressing component, and the rotating component is used for converting the rotating motion of the driver into the linear motion of the pressing component;

the actuation input location is located between the sliding region and the working assembly.

Further, the driving input position is located at a lower portion or a position near a lower end of the rotating assembly.

Further, the sliding area is a range between a position at or near an upper end of the rotating assembly and a driving input position.

Furthermore, an accommodating cavity is formed in the pressing component, and at least one part of the rotating component is positioned in the accommodating cavity;

the pressing assembly is also provided with an avoiding channel which is communicated with the accommodating cavity and the outside;

the reciprocating telescopic structure further comprises a transmission assembly, and the transmission assembly penetrates through the avoidance channel to be connected with the rotating assembly and the driver; the driver drives the rotating component to rotate through the transmission component.

Further, the rotating assembly comprises a rotating rod; the pressing assembly comprises a sliding block and a pressing piece, a containing cavity is formed in the center of the inside of the pressing piece, the upper end of the pressing piece is fixedly connected with the sliding block, at least one part of the rotating rod is located in the containing cavity, and the sliding block is coupled with the rotating rod located outside the containing cavity.

Further, the transmission assembly comprises a first synchronizing wheel, a second synchronizing wheel and a synchronous belt, the first synchronizing wheel is fixedly installed on an output shaft of the driver, the second synchronizing wheel is fixedly installed at a driving input position of the rotating rod, and the first synchronizing wheel and the second synchronizing wheel are connected through the synchronous belt.

Furthermore, the pressing piece is formed by a plurality of pressing sheets in a surrounding mode, the inner center positions of the pressing sheets are the accommodating cavities, and the clearance between the adjacent pressing sheets forms the avoiding channel.

Further, the lower end of the driver is higher than the lower end of the rotating assembly.

Further, the reciprocating telescopic mechanism further comprises a fixed plate, and the rotating rod is rotatably mounted on the fixed plate.

Further, the rotary rod passes through the connecting piece install in the fixed plate, the connecting piece passes dodge the passageway, the fixed plate with connecting piece fixed connection, the rotary rod is rotatable install in the connecting piece.

Further, the connecting piece is provided with the rotating rod through a bearing, and the bearing is positioned in the accommodating cavity.

Furthermore, the reciprocating telescopic mechanism further comprises an anti-rotation component, and the anti-rotation component enables the pressing component not to deviate and not to rotate along the central axis of the pressing component during reciprocating telescopic motion.

Further, the rotation preventing assembly includes a guide plate having a guide groove in the same direction as the movement direction of the working assembly, and a follower disposed at an upper end of the pressing assembly, the follower being embedded in the guide groove and sliding up and down therein.

Furthermore, an upper retainer ring and a lower retainer ring are arranged on the rotating rod;

the upper retainer ring is arranged at the upper end of the rotating rod;

the lower retainer ring is arranged at the lower part of the rotating rod or at a position close to the lower end of the rotating rod and used for fixing the bearing.

Furthermore, a sleeve positioned on the periphery of the pressing piece is arranged on the fixing plate.

Further, reciprocal telescopic machanism still includes the response subassembly, the response subassembly includes riser, photoelectric sensing ware and pointer, riser fixed mounting on the fixed plate and with pressing piece parallel arrangement, install the upper end of riser the photoelectric sensing ware, the pointer is fixed to be set up on the sliding block.

Furthermore, a plurality of hooks are symmetrically arranged on the fixing plate.

Further, the rotary rod is the lead screw, the sliding block be with the screw-nut that the rotary rod cooperation was used.

Further, the output shaft of the driver is disposed downward.

In a second aspect, a chest compression device comprises any one of the above reciprocating telescoping mechanisms.

The invention has the beneficial effects that:

1. according to the screw rod nut, the matching mode of the screw rod and the screw rod nut is adopted, and the pressing sheet is fixedly arranged on the screw rod nut and is positioned on the periphery of the screw rod, so that the structure is compact, and the overall size is reduced;

2. according to the mechanism, the driving input positions of the driver and the screw rod are arranged at the lower part of the screw rod or the position close to the lower end of the screw rod, so that the position of the driver is lowered on the premise of not reducing the stroke of the working assembly, the center of gravity of the whole mechanism is moved downwards, and the mechanism is reduced in shaking or does not shake when the working assembly performs extrusion action;

3. the lower end of the driver is higher than the lower end of the rotating assembly, when the reciprocating telescopic mechanism is in any state, the driver is not interfered with the working assembly, the structure is stable, and the gravity center of the reciprocating telescopic mechanism can be enabled to shift downwards;

4. this application can fix a position and adjust through the mounted position of adjusting the upper stop ring the stroke scope of sliding block has guaranteed the effective working stroke of working assembly, has guaranteed the effective extrusion to the patient promptly.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the connection of the actuator and the rotating assembly of the present invention;

FIG. 3 is a schematic view of a rotary assembly of the present invention;

FIG. 4 is a schematic view of the pressing assembly of the present invention;

FIG. 5 is a side view of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural view of an anti-rotation assembly and a sensing assembly according to the present invention;

FIG. 8 is a schematic view of the fixing plate and pressing assembly of the present invention;

fig. 9 is a schematic structural view of the fixing plate and the mounting plate of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In a first aspect, referring to fig. 1, a reciprocating telescoping mechanism comprises a rotating component 10, a pressing component 20, a driver 30 and a working component 40,

the working assembly 40 is a pressing head, and the working assembly 40 is arranged at the lower end of the pressing assembly 20 and is used for pressing the chest of the patient;

the driving input position of the rotating component 10 is connected with the driver 30, the sliding region of the rotating component 10 is coupled with the pressing component 20, and the rotating component 10 is used for converting the rotating motion of the driver 30 into the linear motion of the pressing component 20;

the actuation input position is located between the sliding area and the working assembly 40.

In a specific embodiment, the driver 30 of the present application drives the rotating component 10 to perform a rotating motion, the rotating component 10 drives the pressing component 20 coupled to the sliding region of the rotating component to perform an ascending and descending motion, the ascending and descending stroke of the pressing component 20 is the length of the sliding region of the rotating component 10, and the pressing component 20 drives the working component 40 at the lower end of the pressing component to perform an ascending and descending motion, so as to squeeze the chest of the patient.

Further, the driving input position is located at a lower portion or a position near a lower end of the rotating assembly 10.

Further, the sliding area is a range between a position at or near an upper end of the rotating assembly 10 and a driving input position.

When concrete implementation, the drive input position of this application is located the slip region with between the work subassembly 40 for the mounted position of driver is installed by prior art and is moved to the lower part of swivel assembly 10 or be close to the position of lower extreme at swivel assembly 10's top by the installation, moves reciprocating telescoping mechanism holistic focus down, and reciprocating telescoping mechanism reduces when pressing down work and rocks, has guaranteed effective extrusion to the patient.

When the concrete implementation, relative prior art, the sliding region and the drive input position of this application have been adjusted, the drive input position is located the lower part of runner assembly 10 or the position that is close to the lower extreme, the sliding region who presses down subassembly 20 is in the upper portion of runner assembly 10, the reciprocal telescopic machanism focus of this application squints downwards for the operation of whole reciprocal telescopic machanism is stable, has reduced the volume of whole reciprocal telescopic machanism greatly.

Further, referring to fig. 2, an accommodating cavity 26 is formed inside the pressing component 20, and at least a portion of the rotating component 10 is located in the accommodating cavity 26;

in practical implementation, the accommodating cavity 26 is arranged to prevent the rotating component from interfering with the pressing component when the pressing component reciprocates, that is, the accommodating cavity 26 provides a moving space for the rotating component.

The pressing component 20 is further provided with an avoiding channel 23, and the avoiding channel 23 is communicated with the accommodating cavity 26 and the outside;

the reciprocating telescopic structure further comprises a transmission assembly 31, and the transmission assembly 31 penetrates through an avoidance channel to connect the rotating assembly 10 and the driver 30; the driver 30 drives the rotating assembly 10 to rotate through the transmission assembly 31.

When the pressing assembly reciprocates, the avoiding channel prevents the transmission assembly from interfering with the pressing assembly, namely the avoiding channel provides a moving space for the transmission assembly.

It should be noted that the connection position of the transmission assembly 31 and the rotation assembly 10 is an input position for driving on the rotation assembly 10.

In particular, the drive 30 of the present application may be a motor.

Further, referring to fig. 3-6, the rotating assembly 10 includes a rotating rod 11; the pressing assembly 20 includes a sliding block 21 and a pressing member 22, an accommodating cavity 26 is disposed at a central position inside the pressing member 22, an upper end of the pressing member 22 is fixedly connected to the sliding block 21, at least one portion of the rotating rod 11 is located in the accommodating cavity 26, and the sliding block is coupled to the rotating rod 11 located outside the accommodating cavity 26.

In practical application, since at least a part of the rotating rod 11 is located in the accommodating cavity 26, the volume of the reciprocating telescopic mechanism of the present application is greatly reduced, and the structure is more compact.

Still further, the rotating rod 11 is a screw rod, and the sliding block 21 is a screw nut used in cooperation with the rotating rod 11.

In the implementation, the screw rod converts the rotation of the driver 30 into the linear motion of the screw nut, and the pressing member 22 fixed on the screw nut drives the working assembly 40 to move linearly downward.

Still further, referring to fig. 4, the pressing member 22 is formed by a plurality of pressing sheets 221, the inner center positions of the plurality of pressing sheets 221 are the accommodating cavities 26, and the clearance between adjacent pressing sheets forms the escape passage 23 for the synchronous belt 313 to pass through.

In practical implementation, the pressing element 22 of the present application is composed of a plurality of pressing sheets, the pressing sheets are arc-shaped plates, the plurality of pressing sheets are combined into a cylinder shape, an accommodating cavity 26 is formed inside the plurality of pressing sheets, and the accommodating cavity 26 is used for installing at least a part of the rotating rod 11. The utility model provides a press the piece and be the arc but not be restricted to the arc, as long as its many press the structure that its inside formation after the piece is constituteed holds chamber 26 all is in the protection scope of this application.

Further, referring to fig. 2, 5 and 6, the transmission assembly 31 includes a first synchronizing wheel 311, a second synchronizing wheel 312 and a timing belt 313, the first synchronizing wheel 311 is fixedly installed on the output shaft of the driver 30, the second synchronizing wheel 312 is fixedly installed at the driving input position of the rotating rod 11, and the first synchronizing wheel 311 and the second synchronizing wheel 312 are connected through the timing belt 313.

In specific implementation, the timing belt 313 passes through the avoidance channel 23 to connect the first synchronizing wheel 311 and the second synchronizing wheel 312, so as to ensure that the rotation of the first synchronizing wheel 311 and the second synchronizing wheel 312 is synchronized.

Further, referring to fig. 2, the lower end of the driver 30 is higher than the lower end of the rotating assembly 10.

In practical implementation, it should be noted that in the embodiment of the present application, the driving input position is located at a position close to the lower end of the screw rod, and the installation mode of the driver 30 is an inverted mode, and the output shaft of the driver 30 is placed downward.

Preferably, the driver 30 may be installed in various ways, and the driver 30 is installed such that the lower end of the driver 30 is not lower than the lower end of the rotating assembly 10, and the installation way may be a horizontal installation way or an upward installation way.

When the actuator 30 is placed horizontally, the position of the actuation input is not limited by the height direction of the actuator 30; when the actuator 30 is placed in an upward manner, the actuation input position is located at a lower portion or a position near the middle portion of the lead screw; the driver 30 may be selected from one of a normal placement mode, an inverted placement mode, and a horizontal placement mode.

More specifically, the driver further includes a controller disposed outside the driver 30 and electrically connected to the driver 30.

Still specifically, an output end of the driver 30 is mounted with a speed reducer, and an output end of the speed reducer is mounted with the first synchronizing wheel 311.

Still more particularly, the driver further includes an encoder in communication with the controller.

More specifically, the driver further includes a power supply, the power supply may be a battery module for supplying power to the driver 30, the power supply may also be a wire for supplying power to the driver 30, and both power supply modes may also exist at the same time, which are selected according to the use environment and the use requirement.

Further, referring to fig. 3, the reciprocating telescoping mechanism further includes a fixing plate 50, and the fixing plate 50 is mounted on the rotating rod 11 through a bearing 51.

In practical implementation, referring to fig. 8, the reciprocating telescoping mechanism further includes a fixing plate 50, and the rotating rod 11 is rotatably mounted on the fixing plate 50.

Further, the rotating rod 11 is mounted on the fixing plate 50 through a connecting member 52, the connecting member 52 penetrates through the avoiding channel 23, the fixing plate 50 is fixedly connected with the connecting member 52, and the rotating rod 11 is rotatably mounted on the connecting member.

Still further, the connecting member 52 is mounted to the rotating rod 11 through a bearing 51, and the bearing 51 is located in the accommodating cavity 26.

When the fixing device is specifically implemented, the connecting piece and the fixing plate are fixedly connected together or fixed with each other; the connecting element may also be formed by a part of the fixing plate protruding therefrom.

Preferably, the bearing is arranged in the accommodating cavity 26, the gravity center moves downwards in a compact structure, and the avoiding channel enables the pressing piece and the fixed plate or the connecting piece not to interfere with each other when the pressing piece moves in a reciprocating mode.

In the present application, the fixing plate 50 is installed at the lower end of the rotating rod 11 or a position close to the lower end, so that the center of gravity of the entire reciprocating telescoping mechanism is lowered.

In specific implementation, referring to fig. 9, a flange 53 is fixedly mounted at the lower end of the bearing 51, a plurality of mounting seats 531 extending outwards are uniformly distributed on the outer edge of the flange 53, and the mounting seats 531 and the connecting pieces 52 are fixed through bolts, screws and the like.

More specifically, the driver 30 is fixedly mounted on the fixing plate 50.

Still further, referring to fig. 6, the first synchronizing wheel 311, the second synchronizing wheel 312 and the timing belt 313 are disposed below the fixing plate 50.

Further, referring to fig. 2 and 7, the reciprocating telescoping mechanism further includes an anti-rotation component 60, and the anti-rotation component 60 is used for preventing the pressing component 20 from deviating and rotating along the central axis thereof during reciprocating telescoping movement.

Still further, the rotation preventing assembly 60 includes a guide plate 61 and a follower 62, the guide plate 61 has a guide groove 63 having the same direction as the moving direction of the working assembly 40, the follower 62 is provided at the upper end of the slide block 21, and the follower 62 is fitted into the guide groove 63 and slides up and down inside thereof.

Still further, the guide plate 61 is vertically and fixedly installed on the fixed plate 50, and the follower 62 includes a follower installation seat 621 fixedly installed on the slide block 21, and the follower installation seat 621 passes through the roller 622. The roller 622 is fitted into the guide groove 63.

In specific implementation, the guide groove 63 is vertically disposed, the roller 622 is embedded in the guide groove 63 and vertically displaces therein, and the roller 622 is fixedly mounted on the sliding block 21 to ensure that the sliding block 21 displaces in the vertical direction without generating a displacement phenomenon or causing the sliding block 21 to rotate around the rotating rod 11.

Further, referring to fig. 3 and 6, an upper retainer ring 12 and a lower retainer ring 13 are disposed on the rotating rod 11;

the upper retainer ring 12 is arranged at the upper end of the rotating rod 11; the upper retainer ring 12 is composed of two upper half rings, and the two upper half rings are fixed by a clamp spring.

In specific implementation, the upper retainer ring 12 has a limiting and stopping function, and is used for limiting the rising position of the sliding block 21 and preventing the sliding block 21 from sliding out of the upper end of the rotating rod 11; more specifically, the range of the sliding region is adjusted by adjusting the position of the upper retainer ring, so that the effective working stroke of the working assembly 40 is ensured.

The lower retainer 13 is disposed at a lower portion or a position near a lower end of the rotating rod 11, and is used to fix the bearing 51.

In specific implementation, the lower retainer ring 13 is arranged below the bearing, the lower retainer ring 13 is composed of two lower half rings, and the two lower half rings are fixed by a clamp spring.

Further, referring to fig. 1, a sleeve 70 is disposed on the fixing plate 50 and located at the periphery of the pressing member 22.

In a specific implementation, the sleeve 70 includes a plurality of cylindrical plates, and the shape of the cylindrical plates is the same as that of the pressing member 22. The sleeve is used for supporting and has the function of isolating oil stains and sundries.

Further, referring to fig. 2 and 7, the reciprocating telescoping mechanism further includes a sensing component 80, the sensing component 80 includes a vertical plate 81, a photoelectric sensor 82 and a pointer 83, the vertical plate 81 is fixedly mounted on the fixing plate 50 and is parallel to the pressing member 22, the photoelectric sensor 82 is mounted at the upper end of the vertical plate 81, and the pointer 83 is fixedly mounted on the sliding block 21.

When the device is specifically implemented, the photoelectric sensor is matched with the pointer, the photoelectric sensor determines the position of the working assembly through the position of the pointer and transmits information to the controller, and the controller enables the working assembly to return to the original position through controlling the motor or enables the working assembly to start working in the sliding area by controlling the forward and reverse rotation time of the motor.

The sleeve 70 is provided with a slide hole in which the pointer 83 slides.

Further, referring to fig. 1 and 8, a plurality of hooks 90 are symmetrically disposed on the fixing plate 50.

In particular implementations, the hook is used to secure a strap.

Further, the central axes of the rotating rod 11, the pressing member 22, and the sleeve 70 are the same.

In the present application, referring to fig. 8 and 9, the upper and lower ends of the pressing members 22 are fixed by an upper plate 24 and a lower plate 25, the upper end surface of the upper plate 24 is fixedly provided with a sliding block 21, and the lower end surface of the lower plate 25 is fixedly provided with a working assembly 40.

The output shaft of the driver 30 of this application drives the first synchronizing wheel 311 and rotates, the hold-in range 313 makes the second synchronizing wheel 312 with the first synchronizing wheel 311 keeps synchronous rotation, the second synchronizing wheel 312 makes the rotary rod 11 carries out rotary motion, the rotary rod 11 will the rotary motion of driver 30 truns into the required linear motion of sliding block 21 is linear motion sliding block 21 drives the pressing member 22, the working component 40 that fix on it and is linear motion.

According to the screw rod nut, the matching mode of the screw rod and the screw rod nut is adopted, and the pressing sheet is fixedly arranged on the screw rod nut and is positioned on the periphery of the screw rod, so that the structure is compact, and the overall size is reduced;

according to the mechanism, the driving input positions of the driver and the screw rod are arranged at the lower part or the position close to the lower end of the screw rod, so that the position of the driver is lowered on the premise of not reducing the stroke of the working assembly, the center of gravity of the whole mechanism moves downwards, and the mechanism is reduced in shaking during pressing;

the lower end of the driver is higher than the lower end of the rotating assembly, when the reciprocating telescopic mechanism is in any state, the driver is not interfered with the working assembly, the structure is stable, and the gravity center of the reciprocating telescopic mechanism can be enabled to shift downwards;

this application can fix a position and adjust through the mounted position of adjusting the upper stop ring the stroke scope of sliding block has guaranteed the effective working stroke of working assembly, has guaranteed the effective extrusion to the patient promptly.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A reciprocating telescoping mechanism is characterized by comprising a rotating component (10), a pressing component (20), a driver (30) and a working component (40),

the working assembly is arranged at the lower end of the pressing assembly (20) and is used for pressing the chest of the patient;

the driving input position of the rotating component (10) is connected with the driver (30), the sliding area of the rotating component (10) is coupled with the pressing component (20), and the rotating component (10) is used for converting the rotating motion of the driver (30) into the linear motion of the pressing component (20);

the actuation input position is located between the sliding area and the working assembly (40).

2. A reciprocating telescoping mechanism as claimed in claim 1, wherein the actuation input location is at or near a lower portion of the rotating group (10).

3. A reciprocating telescopic mechanism according to claim 1, wherein said sliding area is the range between a position at or near the upper end of the rotating group (10) and the driving input position.

4. The reciprocating telescoping mechanism of claim 1, characterized in that the pressing component (20) is internally provided with a containing cavity (26), and at least a part of the rotating component (10) is positioned in the containing cavity (26);

the pressing assembly (20) is further provided with an avoiding channel (23), and the avoiding channel (23) is communicated with the accommodating cavity (26) and the outside;

the reciprocating telescopic structure further comprises a transmission assembly (31), and the transmission assembly (31) penetrates through the avoiding channel (23) to connect the rotating assembly (10) and the driver (30); the driver (30) drives the rotating component (10) to rotate through the transmission component (31).

5. A reciprocating telescoping mechanism as in claim 4, characterized in that the rotating assembly (10) comprises a rotating rod (11); the pressing assembly (20) comprises a sliding block (21) and a pressing piece (22), an accommodating cavity (26) is formed in the center of the inside of the pressing piece (22), the upper end of the pressing piece (22) is fixedly connected with the sliding block (21), at least one part of the rotating rod (11) is located in the accommodating cavity (26), and the sliding block (21) is coupled with the rotating rod (11) located outside the accommodating cavity (26).

6. The reciprocating telescoping mechanism of claim 5, wherein the transmission assembly (31) comprises a first synchronizing wheel (311), a second synchronizing wheel (312) and a timing belt (313), the first synchronizing wheel (311) is fixedly installed on an output shaft of the driver (30), the second synchronizing wheel (312) is fixedly installed at a driving input position of the rotating rod (11), and the first synchronizing wheel (311) and the second synchronizing wheel (312) are connected through the timing belt (313).

7. The reciprocating telescoping mechanism of claim 5, characterized in that the pressing piece (22) is surrounded by a plurality of pressing sheets (221), the inner center position of the plurality of pressing sheets (221) is the accommodating cavity (26), and the clearance between the adjacent pressing sheets (221) forms the escape channel (23).

8. A reciprocating telescoping mechanism as in claim 1, wherein the lower end of the driver (30) is higher than the lower end of the rotating group (10).

9. The reciprocating telescoping mechanism of claim 5, wherein: the reciprocating telescopic mechanism further comprises a fixing plate (50), and the rotating rod (11) is rotatably mounted on the fixing plate (50).

10. The reciprocating telescoping mechanism of claim 9, wherein: the rotary rod (11) is installed on the fixing plate (50) through a connecting piece (52), the connecting piece (52) penetrates through the avoiding channel (23), the fixing plate (50) is fixedly connected with the connecting piece (52), and the rotary rod (11) is rotatably installed on the connecting piece (52).

11. The reciprocating telescoping mechanism of claim 10, wherein: the connecting piece (52) is used for mounting the rotating rod (11) through a bearing (51), and the bearing (51) is positioned in the accommodating cavity (26).

12. The reciprocating telescoping mechanism of claim 5, further comprising an anti-rotation member (60), the anti-rotation member (60) allowing the pressing member (20) to reciprocate without deflection and rotation along its central axis.

13. The reciprocating telescopic mechanism according to claim 12, wherein the rotation preventing member (60) comprises a guide plate (61) and a follower (62), the guide plate (61) having a guide groove (63) in the same direction as the moving direction of the working member (40), the follower (62) being provided at an upper end of the pressing member (20), the follower (62) being inserted into the guide groove (63) and sliding up and down therein.

14. The reciprocating telescoping mechanism of claim 11, wherein the rotating rod (11) is provided with an upper retainer (12) and a lower retainer (13);

the upper retainer ring (12) is arranged at the upper end of the rotating rod (11);

the lower retainer ring (13) is arranged at the lower part of the rotating rod (11) or a position close to the lower end and used for fixing the bearing (51).

15. The reciprocating telescoping mechanism as claimed in claim 9, wherein a sleeve (70) is provided on the fixed plate (50) at the periphery of the pressing member (22).

16. The mechanism of claim 9, further comprising a sensing member (80), wherein the sensing member (80) comprises a vertical plate (81), a photoelectric sensor (82) and a pointer (83), the vertical plate (81) is fixedly mounted on the fixing plate (50) and is parallel to the pressing member (22), the photoelectric sensor (82) is mounted on an upper end of the vertical plate (81), and the pointer (83) is fixedly mounted on the sliding block (21).

17. The reciprocating telescoping mechanism as claimed in claim 9, wherein a plurality of hooks (90) are symmetrically provided on the fixed plate (50).

18. The reciprocating telescoping mechanism as claimed in claim 5, wherein the rotating rod (11) is a lead screw and the sliding block (21) is a lead screw nut cooperating with the rotating rod (11).

19. A reciprocating telescoping mechanism as in claim 8, wherein the output shaft of the driver (30) is disposed downwardly.

20. A chest compression device including a reciprocating telescoping mechanism as claimed in any one of claims 1 to 19.