CN117653534A - Split chest cavity pressing machine - Google Patents

Abstract

The utility model discloses a split chest cavity pressing machine, which comprises a main machine, wherein the main machine comprises a shell and swinging pieces which are arranged on two sides of the shell and can rotate; the rotary driving piece is arranged in the host machine and drives the swinging pieces at two sides to swing synchronously through the rotation of the rotary driving piece; and the external driving unit is separated from the host machine, the external driving unit is connected with a power conducting piece, the power conducting piece is detachably connected with a rotary driving piece on the host machine, and the external driving unit drives the rotary driving piece to rotate through the power conducting piece. The chest compression device solves the problems that the existing chest compression device only has single-point compression, has low cardiopulmonary resuscitation efficiency and has high overall gravity center of the product, and simultaneously reduces the weight of the body.

Description

Split chest cavity pressing machine

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a split chest compression machine.

Background

The current maintenance of blood circulation during CPR (cardiopulmonary resuscitation (cardiopulmonary resuscitation) is composed of basic elements such as chest compressions, relaxation and ventilation, and any of the elements can influence the generation of forward blood flow (reperfusion) during CPR.

In actual clinical operation, the manual pressing depth of medical staff in CPR is often insufficient, the aim of squeezing the chest cavity cannot be achieved, and the medical staff cannot be pressed for a long time due to larger physical consumption, so that a plurality of hospitals are equipped with cardiopulmonary pressing devices to replace the manual pressing of the medical staff, the existing chest external pressing devices are generally provided with a pressing head, only the action of downwards pressing the chest cavity can be realized, the single-point pressing can only be realized, the whole chest cavity contour cannot be deformed, so that the cardiopulmonary resuscitation efficiency is not high, and the single-point pressing is easy to cause injury to the chest of a patient.

In addition, the height of the existing chest compression device is generally higher, as in the external design of the publication number CN304758845S and the chest compression device disclosed in the publication number CN209286115U, a compression rod is extended from the lower end of the main machine, the main machine passively rises after the compression rod extends out, the mass of one main machine is generally larger, if the main machine passively rises, the gravity center of the whole compression machine rises, and then the equipment is unstable and can shake, so that the stability of the chest compression device in use is affected.

In addition, many components such as a motor, a transmission mechanism, a battery and the like are installed in the existing chest compression device, so that the weight of the chest compression device is relatively large, the whole body is placed on the chest of a human body when the chest compression device is used, and the chest rebound speed during cardiopulmonary resuscitation can be influenced by the body with excessive weight, so that the overall weight of the chest compression device needs to be reduced.

Disclosure of Invention

The utility model provides a split chest compression machine, which solves the problems that the existing chest compression device only has single-point compression, has low cardiopulmonary resuscitation efficiency and has high integral gravity center of a product, and simultaneously reduces the weight of a machine body.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the split chest cavity pressing machine comprises a main machine, wherein the main machine comprises a shell and swinging pieces which are arranged on two sides of the shell and can rotate; the rotary driving piece is arranged in the host machine and drives the swinging pieces at two sides to swing synchronously through the rotation of the rotary driving piece; the external driving unit is separated from the host machine, the external driving unit is connected with a power conducting piece, the power conducting piece is detachably connected with a rotary driving piece on the host machine, the external driving unit drives the rotary driving piece to rotate through the power conducting piece, the structure that the host machine is separated from the external driving unit is adopted, only the swinging piece and the rotary driving piece are needed to be installed inside the host machine, the parts of the power part are fully installed in the external driving unit, the volume and the weight of the host machine placed on the chest of a human body are greatly reduced, the pressure on the chest is very small, the gravity of the host machine cannot cause the chest to deform due to the downward too large pressing force of the chest, the rebound burden of the chest is lightened when the chest is rebounded, the rebound is rapid, the phenomenon that the rebound is insufficient is avoided, and the external driving unit drives the rotary driving piece to rotate through the flexible selection of the power conducting piece so that the external driving unit can stably control the host machine.

Preferably, the swinging member comprises a supporting rotating shaft positioned in the main machine and a connecting shaft positioned outside the main machine, a swinging arm is connected between the connecting shaft and the end part of the supporting rotating shaft, and the supporting rotating shaft is used as the rotating center of the swinging member and is also used as a driving shaft to be matched with the rotating driving member to realize the rotation of the swinging member.

Preferably, the rotary driving member is a curved surface turntable, the curved surface turntable is arranged between the swinging members at two sides, one side of the curved surface turntable is uniformly provided with a plurality of curved surface protruding parts extending along the axial direction of the curved surface turntable, one side of the supporting rotating shaft is provided with a follower extending towards the curved surface protruding parts, the follower is always contacted with the edge curved surface of the curved surface protruding parts, when the curved surface turntable rotates, the follower and the edge curved surface of the curved surface protruding parts are matched to relatively move so that the swinging member swings around the supporting rotating shaft, the curved surface turntable is used as the rotary driving member and synchronously driven to rotate by the power transmission member, continuous swinging of the swinging member can be realized through the curved surface protruding parts, the curved surface protruding parts mainly push the follower downwards to move so as to drive the supporting rotating shaft to rotate, and therefore, the connecting shaft at the outer side of the swinging member swings, and the rotary driving member is a lever principle.

Preferably, the upper side of the curved surface turntable is provided with a transmission plug hole, the end part of the power conduction piece is provided with a plug connector matched with the transmission plug hole, and the power conduction piece and the curved surface turntable can be quickly connected through the transmission plug hole and the plug connector, so that the power conduction piece is convenient to assemble and disassemble.

Preferably, the edge curved surface of the curved surface protruding portion comprises a first curved surface portion and a second curved surface portion which are symmetrically arranged on two sides of the curved surface protruding portion, a third curved surface portion which is connected with the first curved surface portion and the second curved surface portion is arranged at the top of the curved surface protruding portion, a fourth curved surface portion is formed between the adjacent curved surface protruding portions, one end of the swinging piece can swing up and down through the first curved surface portion and the second curved surface portion, so that the swinging piece can bear larger force when in swinging, one end of the swinging piece can stay for a certain time at the two positions, particularly the position of the third curved surface portion needs to stay for a certain time, and the cardiopulmonary resuscitation effect can be improved.

Preferably, the follower comprises a cylindrical member and a connecting rod connected to one end of the cylindrical member, the connecting rod is connected with the connecting hole in the supporting rotating shaft, the cylindrical member is favorable for the cooperation contact between the follower and the curved surface protruding portion, and the connecting rod and the connecting hole can enable the follower to be detached from the connecting block.

Preferably, the follower comprises a roller and a supporting screw rod arranged at one axial end of the roller, the supporting screw rod is connected with a threaded hole in the supporting rotating shaft, the roller is contacted with the curved surface protruding portion, friction force between the follower and the curved surface protruding portion can be reduced, noise is reduced, and the pressing machine can run more smoothly.

Preferably, the number of the curved surface protruding parts is even, and the even number of the curved surface protruding parts enables swinging parts at two sides to always keep synchronous motion, so that cardiopulmonary resuscitation efficiency is improved.

Preferably, the power transmission part is a transmission flexible shaft, the transmission flexible shaft enables the position between the external driving unit and the main machine to be flexible, and the normal pressing process of the main machine is not affected by the rotation of the transmission flexible shaft when the chest is pressed.

Preferably, the rotary driving member is a driving shaft, the driving shaft is arranged between the swinging members at two sides and is parallel to the supporting rotating shafts, the driving shaft is wound with a drawing belt, two ends of the drawing belt are respectively wound on the supporting rotating shafts at two sides, and the driving shaft is driven to rotate through the power transmission member, so that two ends of the drawing belt are simultaneously tightened or loosened, and the supporting rotating shafts synchronously rotate, so that synchronous swinging of the swinging members is realized.

Preferably, a transmission plug hole is formed in one end of the driving shaft, a plug connector matched with the transmission plug hole is arranged at the end of the power transmission part, and the transmission plug hole facilitates quick plug connection and quick disassembly of the power transmission part and the driving shaft.

Preferably, the utility model further comprises a binding belt, wherein two ends of the binding belt are respectively connected with swinging members at two sides of the shell to form a closed loop connection, the binding belt can be externally matched and used for fixing a host on a human body, the two ends of the binding belt are driven by the swinging members to lift up and integrally tighten, the chest can be squeezed, in addition, the host is pressed down to press the chest in the tightening and pressing processes of the binding belt, the gravity center of the host is not moved up in the pressing processes, the host is always attached to the chest of the human body, and shaking in the pressing processes can be reduced, so that the binding belt is stable.

Preferably, the end part of the binding belt is connected with the swinging part through the hook part, and the hook part facilitates the quick connection and disassembly of the binding belt and the swinging part, so that the binding belt is convenient to install and disassemble quickly in emergency treatment.

Preferably, the external driving unit comprises a portable box body, a driving motor and a speed reducer connected with a main shaft of the driving motor are arranged in the portable box body, an output shaft of the speed reducer is fixedly connected or detachably connected with the power transmission part, the portable box body is convenient for carrying the external driving unit, the portable box body can be provided with a lifting handle, the whole volume is smaller, the driving motor and the speed reducer are reasonably arranged in the portable box body, an output shaft of the speed reducer can be exposed out of the side part of the portable box body, the speed reducer is convenient to be connected with the power transmission part, and the power transmission part and the output shaft of the speed reducer can be detached for placement when the portable box body is carried or transported

Preferably, the external driving unit is provided with a built-in battery pack or is externally connected with a power supply through a power line, the battery pack can be replaced, the battery pack can be charged under the condition of not taking out, and the power line can be externally connected with the power supply when the battery pack is not powered.

Compared with the prior art, the utility model has the beneficial effects that:

through setting up outside drive unit and host computer separation to lighten the weight of host computer greatly, reduced the volume of host computer, this kind of host computer is when installing in human thorax through the bandage, and pressure to the thorax is very little, and host computer gravity can not lead to the thorax deformation for the too big compressive force downwards of thorax, when the resilience, lightens the resilience burden of thorax, makes the resilience quick, avoids the resilience insufficient.

The mode that adopts the swinging member to drive the bandage both ends to lift up and wholly tighten up can realize squeezing the thorax, this kind of mode cardiopulmonary resuscitation is efficient, solve current chest press device and only single-point press, cardiopulmonary resuscitation inefficiency and single-point press the problem that easily harm the chest, simultaneously at the bandage tighten up, force the in-process that the host computer pushed down, the host computer pushes down the effect that plays the thorax of pressing, at this in-process, the focus of host computer does not shift up, the host computer is the rocking of pressing the in-process of being stuck to human thorax always, so can be more stable.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a perspective view of a first embodiment of a host according to the present utility model;

FIG. 3 is an internal perspective view of a first embodiment of a host according to the present utility model;

FIG. 4 is an internal front view semi-cutaway view of a first embodiment of the host of the present utility model;

FIG. 5 is a perspective view of the curved turntable of the present utility model;

FIG. 6 is an internal perspective view of a second embodiment of a host according to the present utility model;

FIG. 7 is a schematic diagram of a second embodiment of a host according to the present utility model

FIG. 8 is a corresponding graph of compression depth versus time;

FIG. 9 is a schematic view of the use state of the present utility model;

fig. 10 is a schematic diagram showing the change of the center of gravity of the chest compression machine during the compression process.

Reference numerals:

1. host computer, 11, pull area, 2, swinging member, 21, swing arm, 22, support pivot, 23, connecting axle, 3, bandage, 4, outside drive unit, 5, power conduction spare, 6, bayonet joint, 7, transmission spliced eye, 8, curved surface revolving stage, 81, curved surface bellying, 9, drive shaft, 10, follower, T1, first curved surface portion, T2, third curved surface portion, T3, second curved surface portion, T4, fourth curved surface portion.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-10, the present utility model provides the following technical solutions for solving the problems of heavy weight and large volume of the existing organism: the split chest cavity pressing machine comprises a main machine 1, wherein the main machine 1 comprises a shell and swinging pieces 2 which are arranged on two sides of the shell and can rotate; the rotary driving piece is arranged in the host machine 1, and the swinging pieces 2 at two sides are driven to synchronously swing through the rotation of the rotary driving piece; the external driving unit 4 is separately arranged with the host 1, the external driving unit 4 is connected with the power conducting piece 5, the power conducting piece 5 is detachably connected with the rotary driving piece on the host 1, the external driving unit 4 drives the rotary driving piece to rotate through the power conducting piece 5, the structure that the host 1 is separated from the external driving unit 4 is adopted, only the swinging piece 2 and the rotary driving piece are needed to be arranged in the host 1, the parts of the power part are fully arranged in the external driving unit 4, the volume and the weight of the host 1 placed on the chest of a human body are greatly reduced, the pressure on the chest is very small, the gravity of the host 1 cannot lead to chest deformation due to the downward too large pressing force of the chest, the rebound burden of the chest is lightened in rebound, the rebound is fast, the phenomenon of insufficient rebound is avoided, and the external driving unit 4 can realize stable control of the host 1 through flexible selection of the power conducting piece 5 by driving the rotary driving piece.

Specifically, the main machine 1 may adopt a flat casing, and only a part of the structure of the swinging member 2 and the rotary driving member need to be contained in the casing, where the part of the structure of the rotary driving member may be exposed outside the casing, the power transmission member 5 may have various choices, such as a transmission flexible shaft, and the transmission flexible shaft makes the position between the external driving unit 4 and the main machine 1 flexible, and the rotation of the transmission flexible shaft during chest compression does not affect the normal compression process of the main machine 1, and the power transmission member 5 may also adopt a multi-section movable transmission shaft, which has better strength, and may also realize the transmission under flexible placement of the external driving unit 4 and the main machine 1.

The portable box body is convenient for carrying the external driving unit 4, the portable box body can be provided with a handle, the whole size is smaller, the driving motor and the speed reducer are reasonably arranged in the portable box body, the output shaft of the speed reducer can be exposed at the side part of the portable box body, the power transmission part 5 is conveniently connected with the power transmission part 5, the power transmission part 5 can be detached for placement when the portable box body is carried or transported, the upper side of the portable box body can be provided with a control panel, the rotating speed and the rotating direction of the driving motor can be adjusted through the control panel, and other control parts are not required to be arranged on the host machine 1.

As an option of the external driving unit 4 for supplying power, the external driving unit 4 is internally provided with a battery pack or externally connected with a power supply through a power line, the battery pack can be replaced, the battery pack can be charged under the condition of not taking out, the power line can be externally connected with a power supply when the battery pack is not powered, in the application process, the two power supply modes can be combined on the external driving unit 4, and a user can select different power supply modes according to different use environments.

In this embodiment, as shown in fig. 3, the swinging member 2 includes a supporting rotating shaft 22 located inside the host 1 and a connecting shaft 23 located outside the host 1, a swinging arm 21 is connected between the connecting shaft 23 and an end portion of the supporting rotating shaft 22, the supporting rotating shaft 22 is used as a rotation center of the swinging member 2, and is also used as a driving shaft to cooperate with a rotation driving member to realize rotation of the swinging member 2, and a bearing connected with a housing is sleeved on an outer side of the supporting rotating shaft 22, so that the rotation of the supporting rotating shaft 22 is smoother and more flexible, and the connecting shaft 23 is used to connect with the binding belt 3. In the actual use process, the protection covers can be arranged on the two sides of the host 1 to cover the movable ranges of the swing arm 21 and the connecting shaft 23, so that a user or a patient is prevented from being accidentally injured when the swing arm 21 swings.

The elastic members can be arranged at two ends of the supporting rotating shaft 22, the elastic members can be coil springs, one ends of the coil springs are connected with the swing arms 21, and the other ends of the coil springs are connected with the shell, so that the swing members 2 can swing downwards rapidly to reset after swinging upwards, and the swing efficiency of the swing members 2 is improved.

As a first specific embodiment of the rotary driving member, as shown in fig. 2-5, the rotary driving member is a curved turntable 8, the curved turntable 8 is disposed between the swinging members 2 on two sides, a plurality of curved protrusions 81 extending along the axial direction of the curved turntable 8 are uniformly disposed on one side of the curved turntable 8, a follower 10 extending toward the curved protrusions 81 is mounted on one side of the supporting shaft 22, the follower 10 is always in contact with the curved surface of the edge of the curved protrusions 81, and when the curved turntable 8 rotates, the follower 10 and the curved surface of the edge of the curved protrusions 81 cooperate to perform relative movement so that the swinging member 2 swings around the supporting shaft 22, the curved turntable 8 is used as the rotary driving member, and the power transmission member 5 performs synchronous driving rotation, so that continuous swinging of the swinging member 2 can be realized through the curved protrusions 81, and the curved protrusions 81 mainly push the follower 10 downward to move, so as to drive the supporting shaft 22 to rotate, thereby swinging the connecting shaft 23 at the outer side of the swinging member 2, which is a lever principle.

In order to facilitate connection of the curved surface turntable 8 and the power transmission part 5, a transmission plug hole 7 is formed in the upper side of the curved surface turntable 8, a plug connector 6 matched with the transmission plug hole 7 is arranged at the end part of the power transmission part 5, the power transmission part 5 and the curved surface turntable 8 can be quickly connected through the transmission plug hole 7 and the plug connector 6, the disassembly and assembly are convenient, the transmission plug hole 7 is exposed out of the upper side of the shell, the plug connector 6 can be provided with a lock catch, the lock catch can be automatically locked when the power transmission part is inserted into the transmission plug hole 7, the power transmission part cannot slide out of the transmission plug hole 7, a lock catch button on the plug connector 6 is pressed when the power transmission part is required to be disassembled, the unlocking and the power transmission part is unlocked, and the power transmission part is particularly structurally in the prior art, and the power transmission part is not repeated.

Specifically, the edge curved surface of the curved surface protruding portion 81 includes a first curved surface portion T1 and a second curved surface portion T3 which are disposed on two sides of the curved surface protruding portion 81, a third curved surface portion T2 which is connected with the first curved surface portion T1 and the second curved surface portion T3 is disposed on the top of the curved surface protruding portion 81, a fourth curved surface portion T4 is formed between the adjacent curved surface protruding portions 81, one end of the swinging member can swing up and down through the first curved surface portion T1 and the second curved surface portion T3, so that the swinging member can bear larger force when swinging, meanwhile, when the binding band 3 is released, the second curved surface portion T3 of the curved surface protruding portion 81 is also effective under the action of the chest restoring force, the function of limiting rebound speed is achieved, and the swinging member swings reversely. The first end of the swinging piece can stay at the two positions for a certain time by the third curved surface part T2 and the fourth curved surface part T4, particularly, the third curved surface part T2 is pressed to the deepest position corresponding to the chest cavity and stays for a while, so that the blood in the heart can be pumped out fully; the fourth curved surface portion T4 corresponds to the most relaxed position of the chest and stays for a while, which is beneficial for blood to flow back to the heart. Corresponding to fig. 8, it can be seen that a plateau can be shown on the waveform of the compression for a while, which plateau is good for the compression effect, in the middle of T2 and T4.

For example, the curved surface protruding portion 81 is formed on the side wall of the curved surface turntable 8, the inside of the curved surface turntable 8 is hollowed, the first curved surface portion T1 and the second curved surface portion T3 extend to the inner top surface of the curved surface turntable 8, the fourth curved surface portion T4 is also located on the inner top surface of the curved surface turntable 8, the number of the curved surface protruding portions 81 is even, the even number of the curved surface protruding portions 81 enables swinging pieces on two sides to always keep synchronous movement, cardiopulmonary resuscitation efficiency is improved, the number of the curved surface protruding portions 81 is preferably 2 or 4, and adjustment can be performed as required, as shown in fig. 5, the first end of the swinging piece in the figure and the four curved surface portions formed by the edge curved surfaces of the curved surface protruding portions 81 move to form a pressing period, and circulation is performed.

In this embodiment, as a specific structure of the follower 10, the follower 10 includes a cylindrical member and a connecting rod connected to one end of the cylindrical member, where the connecting rod is connected to a connecting hole on the supporting shaft 22, the cylindrical member is beneficial to the mating contact between the follower 10 and the curved protrusion 81, and the mating of the connecting rod and the connecting hole enables the follower 10 to be detached from the connecting block.

As another specific structure of the follower 10, the follower 10 includes a roller and a supporting screw disposed at one axial end of the roller, the supporting screw is connected to a threaded hole on the supporting shaft 22, and the roller contacts with the curved protrusion 81 to reduce friction between the follower 10 and the curved protrusion 81, reduce noise, and enable the press to run more smoothly.

In the practical application process, the follower 10 and the supporting shaft 22 can be made into an integrated structure, and the follower 10 does not need to be additionally installed.

As a second embodiment of the rotary driving member, as shown in fig. 6-7, the rotary driving member is a driving shaft 9, the driving shaft 9 is disposed between the swinging members 2 at two sides and parallel to the supporting shafts 22, the driving shaft 9 is wound with a drawing belt 11, two ends of the drawing belt 11 are respectively wound on the supporting shafts 22 at two sides, and the driving shaft 9 is driven to rotate by the power transmission member 5, so that two ends of the drawing belt 11 are simultaneously tightened or loosened, and the supporting shafts 22 synchronously rotate, thereby realizing synchronous swinging of the swinging members 2.

Meanwhile, one end part of the driving shaft 9 is provided with a transmission plug hole 7, the end part of the power transmission piece 5 is provided with a plug connector 6 matched with the transmission plug hole 7, the transmission plug hole 7 facilitates quick plug connection and quick disassembly of the power transmission piece 5 and the driving shaft 9, one end part of the driving shaft 9 can be provided with a connecting cylinder with larger diameter, the transmission plug hole 7 is arranged on the end face of the connecting cylinder, and the transmission plug hole 7 is exposed on the side wall of the shell, so that plug connection is facilitated.

The embodiment also comprises a binding belt 3, wherein two ends of the binding belt 3 are respectively connected with the swinging members 2 at two sides of the shell to form closed-loop connection, the binding belt 3 can be externally matched and used for fixing the host 1 on a human body, the two ends of the binding belt 3 are driven by the swinging members 2 to lift and integrally tighten, the chest can be extruded, in addition, in the process of tightening the bandage and forcing the host to press down, the host presses down to play a role of pressing the chest, in the process, the gravity center of the host 1 does not move upwards, the host 1 is always attached to the chest of a human body, and shaking in the pressing process can be reduced, so that the device is stable.

In order to facilitate the quick connection and disassembly of the binding band 3 and the swinging piece 2, the end part of the binding band 3 is connected with the swinging piece 2 through a hook piece, and the hook piece facilitates the quick connection and disassembly of the binding band 3 and the swinging piece 2, so that the quick installation and disassembly are convenient in emergency.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims (15)

1. A split chest compression machine, comprising:

the main machine (1), the main machine (1) comprises a shell and swinging pieces (2) which are arranged on two sides of the shell and can rotate;

the rotary driving piece is arranged in the host machine (1), and the swinging pieces (2) at two sides are driven to synchronously swing through the rotation of the rotary driving piece;

the external driving unit (4) is arranged in a separated mode with the host machine (1), the external driving unit (4) is connected with the power conducting piece (5), the power conducting piece (5) is detachably connected with the rotary driving piece on the host machine (1), and the external driving unit (4) drives the rotary driving piece to rotate through the power conducting piece (5).

2. The split chest compression machine of claim 1 wherein: the swinging piece (2) comprises a supporting rotating shaft (22) positioned inside the host machine (1) and a connecting shaft (23) positioned outside the host machine (1), and a swinging arm (21) is connected between the connecting shaft (23) and the end part of the supporting rotating shaft (22).

3. The split chest compression machine of claim 2 wherein: the rotary driving piece is a curved surface rotary table (8), the curved surface rotary table (8) is arranged between swinging pieces (2) on two sides, a plurality of curved surface protruding portions (81) extending along the axial direction of the curved surface rotary table (8) are uniformly arranged on one side of the curved surface rotary table (8), a follow-up piece (10) extending towards the curved surface protruding portions (81) is arranged on one side of the supporting rotary shaft (22), the follow-up piece (10) always contacts with the edge curved surface of the curved surface protruding portions (81), and when the curved surface rotary table (8) rotates, the follow-up piece (10) is matched with the edge curved surface of the curved surface protruding portions (81) to perform relative movement so that the swinging pieces (2) swing around the supporting rotary shaft (22).

4. A split chest compression machine as claimed in claim 3 wherein: the upper side of curved surface revolving stage (8) be provided with transmission spliced eye (7), the tip of power conduction spare (5) be provided with transmission spliced eye (7) assorted bayonet joint (6).

5. A split chest compression machine as claimed in claim 3 wherein: the edge curved surface of the curved surface protruding portion (81) comprises a first curved surface portion (T1) and a second curved surface portion (T3) which are arranged on two sides of the curved surface protruding portion (81), a third curved surface portion (T2) which is connected with the first curved surface portion (T1) and the second curved surface portion (T3) is arranged at the top of the curved surface protruding portion (81), and a fourth curved surface portion (T4) is formed between the adjacent curved surface protruding portions (81).

6. A split chest compression machine as claimed in claim 3 wherein: the follower (10) comprises a cylindrical member and a connecting rod connected to one end of the cylindrical member, and the connecting rod is connected with a connecting hole on the supporting rotating shaft (22).

7. A split chest compression machine as claimed in claim 3 wherein: the follower (10) comprises a roller and a supporting screw rod arranged at one axial end of the roller, and the supporting screw rod is connected with a threaded hole in a supporting rotating shaft (22).

8. A split chest compression machine as claimed in claim 3 wherein: the number of the curved surface protruding parts (81) is even.

9. The split chest compression machine of claim 1 wherein: the power transmission part (5) is a transmission flexible shaft.

10. The split chest compression machine of claim 2 wherein: the rotary driving part is a driving shaft (9), the driving shaft (9) is arranged between the swinging parts (2) at two sides and is parallel to the supporting rotating shafts (22), the driving shaft (9) is wound with a drawing belt (11), and two ends of the drawing belt (11) are respectively wound on the supporting rotating shafts (22) at two sides.

11. The split chest compression machine of claim 10 wherein: one end part of the driving shaft (9) is provided with a transmission plug hole (7), and the end part of the power transmission part (5) is provided with a plug connector (6) matched with the transmission plug hole (7).

12. The split chest compression machine of claim 1 wherein: the novel portable electric power machine also comprises a binding belt (3), wherein two ends of the binding belt (3) are respectively connected with swinging pieces (2) on two sides of the shell to form closed loop connection.

13. The split chest compression machine of claim 12 wherein: the end part of the binding belt (3) is connected with the swinging piece (2) through the hook piece.

14. The split chest compression machine of claim 1 wherein: the external driving unit (4) comprises a portable box body, a driving motor and a speed reducer connected with a main shaft of the driving motor are arranged in the portable box body, and an output shaft of the speed reducer is fixedly connected or detachably connected with the power transmission piece (5).

15. The split chest compression machine of claim 14 wherein: the external driving unit (4) is internally provided with a battery pack or externally connected with a power supply through a power line.