CN114522079A

CN114522079A - Pressing body and cardiopulmonary resuscitator

Info

Publication number: CN114522079A
Application number: CN202210099990.3A
Authority: CN
Inventors: 朱金春; 王红兵; 陈志华; 熊芬; 邓震; 邓伟良
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-05-24

Abstract

The invention discloses a pressing main body and a cardiopulmonary resuscitation machine, wherein the pressing main body comprises a supporting component, a driving component, a pressing component, a detecting component and a control component. The detection assembly comprises a light source and a receiver, the light source and the receiver are both mounted on the supporting assembly and face the reflective surface, light emitted by the light source is emitted to the receiver after passing through the reflective surface, the receiver converts different optical signals into electric signals and transmits the electric signals to the control assembly, and the control assembly stores and calculates the change times of the voltage value of the electric signals. According to the technical scheme, the detection assembly of the pressing main body and the pressing assembly are in non-contact type, the sensor is not easy to damage, and the requirement on structural accuracy is low.

Description

Pressing body and cardiopulmonary resuscitator

Technical Field

The invention relates to the technical field of medical equipment, in particular to a pressing main body and a cardiopulmonary resuscitator.

Background

With the rapid development of the medical industry, the design and manufacture of cardiopulmonary resuscitation devices have been greatly developed. The traditional detection assembly of the cardio-pulmonary resuscitation machine adopts a contact detection assembly, and has the characteristics of inaccurate precision, low durability and the like; the detection assembly controlled by the light intensity and the magnetic field intensity has high requirements on the position and the structural precision of the assembly and higher cost.

Disclosure of Invention

The invention mainly aims to provide a pressing body, which aims to detect the pressing depth and the pressing times of a cardio-pulmonary resuscitation machine through a non-contact detection assembly so as to reduce the requirement on the structural precision of the pressing body, reduce the cost and prolong the service life.

In order to achieve the above object, the present invention provides a pressing body including:

a support assembly;

the driving component comprises a driving piece and a transmission piece, the driving piece is arranged on the supporting component, and a driving shaft of the driving piece is connected with the transmission piece;

the pressing assembly comprises a pressing push rod and a pressing head, one end of the pressing push rod is connected with the transmission piece, the other end of the pressing push rod is connected with the pressing head, a light reflecting surface is arranged on the surface of the pressing push rod, the light reflecting surface comprises a light absorbing area and a light reflecting area, and the light absorbing area and the light reflecting area are alternately arranged along the axial direction of the push rod;

the detection assembly comprises a light source and a receiver, and the light source and the receiver are both arranged on the supporting assembly and face the light reflecting surface; and

a control assembly electrically connected to the receiver;

the driving piece drives the transmission piece to move so as to drive the pressing push rod to reciprocate in the axis direction of the pressing push rod, light emitted by the light source is emitted to the receiver after passing through the light reflecting surface, the receiver converts different optical signals into electric signals and transmits the electric signals to the control assembly, and the control assembly stores and calculates the change times of the voltage value of the electric signals.

Optionally, the detection assembly further includes a fixing member, the fixing member is mounted on the support assembly and faces the light-reflecting surface of the pressing push rod, and the light source and the receiver are arranged on the surface of the fixing member facing the light-reflecting surface at intervals.

Optionally, the supporting component includes first supporting seat and with the sleeve that first supporting seat is connected, drive assembly install in first supporting seat, the sleeve cover is located press the push rod, the mounting hole has been seted up to telescopic week side, the mounting install in the sleeve, and cover the mounting hole, the mounting hole is located the sleeve is close to the one end of press the head.

Optionally, the light-reflecting surface of the pressing push rod is made of a metal material, a black light-absorbing part is attached to the light-absorbing area of the pressing push rod, and the black light-absorbing part is a plastic part.

Optionally, a groove is formed in the position, located at the light absorption area, of the pressing push rod, and the black light absorption piece is filled in the groove.

Optionally, the pressing push rod is made of stainless steel;

and/or the black light-absorbing piece is made of epoxy resin;

and/or the width of the light-absorbing area in the axis direction is 0.4-0.6 mm, and the width of the light-reflecting area is 0.4-0.6 mm.

Optionally, the receiver is configured as a photoresistor.

Optionally, the transmission part includes a nut and a screw rod, one end of the screw rod is connected with the driving shaft of the driving part, the nut is rotatably connected to the peripheral surface of the screw rod, and one end of the nut departing from the driving part is connected with the pressing push rod so as to convert the rotary motion of the driving part into the linear reciprocating motion of the pressing push rod.

Optionally, the transmission part further comprises a driving wheel, a driven wheel and a conveying belt, the driving wheel is connected to the driving shaft of the driving part, the driven wheel is connected to the lead screw, and the conveying belt is sleeved between the driving wheel and the driven wheel.

The invention also provides a cardiopulmonary resuscitation machine, which comprises a pressing main body and supporting structures arranged on two sides of the pressing main body, wherein the pressing main body is any one of the pressing main bodies.

The pressing main body comprises a supporting component and a driving component arranged on the supporting component, and the driving component is driven by the driving component to move so as to drive the pressing push rod to reciprocate in the axis direction of the pressing push rod, so that the cardio-pulmonary resuscitation pressing function of the pressing head is realized. Simultaneously, be equipped with the reflection of light face that light absorption district and reflection of light district set up in turn on the side of pressing the push rod, combine the detection subassembly at interval with it, the light that sends at the light source is through reflection of light face after the directive receiver, the receiver transmits to control assembly after the reflected light signal conversion of different intensity is the signal of telecommunication of different voltage values, the control assembly storage and the number of times of voltage value change of calculating the signal of telecommunication, so, then can accurately obtain the depth of pressing the push rod, and the detection subassembly of this structure is non-contact detection structure, be difficult to damage, prolong its life, and the record through the number of times reachs the depth of pressing, position and the structure precision requirement to pressing the main part are low, the cost is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a pressing body according to an embodiment of the present invention;

FIG. 2 is a schematic view of the optical path structure of the detection assembly and the pressing rod in the pressing body according to the present invention;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Pressing body	51	Light source
10	Drive assembly	511	Incident light
				11	Driving member	512	Reflected light
12	Transmission member	52	Receiver with a plurality of receivers
				30	Pressing component	53	Fixing piece
31	Push rod	70	Support assembly
				32	Pressing head	71	First supporting seat
33	Reflecting surface	72	Second supporting seat
				331	Light absorption area	73	Sleeve barrel
332	Reflective zone	731	Mounting hole
				50	Detection assembly	74	Fan with cooling device

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention proposes a compression body 100 for cardiopulmonary resuscitation.

Referring to fig. 1 to 2, in an embodiment of the present invention, the pressing body 100 includes a driving assembly 10, a pressing assembly 30, a detecting assembly 50, a supporting assembly 70 and a control assembly 90;

the driving assembly 10 comprises a driving piece 11 and a transmission piece 12, the driving piece 11 is mounted on the supporting assembly 10, and a driving shaft of the driving piece 11 is connected with the transmission piece 12;

the pressing assembly 30 includes a pressing push rod 31 and a pressing head 32, one end of the pressing push rod 31 is connected to the transmission member 12, the other end is connected to the pressing head 32, a light reflecting surface 33 is disposed on the surface of the pressing push rod 31, the light reflecting surface 33 includes a light absorbing area 331 and a light reflecting area 332, and the light absorbing area 331 and the light reflecting area 332 are alternately arranged along the axial direction of the pressing push rod 31;

the detection assembly 50 comprises a light source 51 and a receiver 52, wherein the light source 51 and the receiver 52 are both mounted on the support assembly and face the light reflecting surface 33; the control assembly is electrically connected to the receiver 52;

the driving part 11 drives the driving part 12 to move so as to drive the pressing push rod 31 to reciprocate in the axial direction of the pressing push rod, light emitted by the light source 51 is emitted to the receiver 52 after passing through the reflective surface 33, the receiver 52 converts different optical signals into electric signals and transmits the electric signals to the control assembly, and the control assembly stores and calculates the change times of the voltage values of the electric signals.

In this embodiment, the support assembly 70 functions to connect, secure and mount other components. Specifically, the support assembly 70 includes a first support base 71 having a substantially rectangular parallelepiped shape, and the driving assembly 10 is mounted on the first support base 71, and the height and thickness thereof are adjusted according to actual needs, so as to stably fix the driving assembly 10. The first supporting seat 71 may be made of metal with good heat conductivity, and may be formed by stamping or integral casting, so as to have both the stabilizing and heat dissipating functions. Of course, in other embodiments, injection molding or extrusion molding engineering plastics can be used, and the injection molding can be performed, so that the processing is convenient, the weight is light, the weight is effectively reduced, and the cost can be reduced on the premise of ensuring the mechanical performance.

The driving assembly 10 comprises a driving part 11 and a power transmission part 12, wherein the driving part 11 can be a motor or a motor, such as a brush motor, and has the advantages of simple structure, convenient maintenance and easy control; but also a stepper or servo motor. The driving part 11 is connected with the pressing component 30 through the transmission part 12 for driving, the running frequency of the driving part 11 can be effectively adjusted, the control is convenient, and the driving stability is improved. The transmission member 12 converts the rotation of the driving member 11 into a linear reciprocating motion, and the pressing member 30 is connected to the transmission member 12, so as to drive the pressing member 30 to perform a pressing function.

The pressing assembly 30 includes a pressing rod 31 and a pressing head 32, the pressing rod 31 is substantially cylindrical, one end of the pressing rod 31 is connected to the driving member 12, the other end of the pressing rod is connected to the pressing head 32, and the outer periphery of the pressing head 32 is generally wrapped by an elastic sleeve, so that the pressing damage is reduced. The surface of the pressing plunger 31 is provided with a light-reflecting surface 33, and the light-reflecting surface 33 may be a light-reflecting object attached to the peripheral side surface of the pressing plunger 31, or the surface of the pressing plunger 31 itself may be the light-reflecting surface 33. The light-reflecting surface 33 includes a light-absorbing region 331 and a light-reflecting region 332, the light-absorbing region 331 can absorb most of the light, so that the light-reflecting region 332 has a low reflectivity, and the light-reflecting region 332 absorbs less light, so that the light-reflecting region has a high reflectivity to light. Here, it is only necessary that the reflectivity of the light absorption region 331 is smaller than the reflectivity of the light reflection region 332, and the light absorption region 331 and the light reflection region 332 are alternately arranged along the axial direction of the pressing push rod 31, so that when the pressing push rod 31 moves linearly, the emitted light can be fed back with different reflectivities.

The detecting assembly 50 includes a light source 51 and a receiver 52, and the light source 51 may be infrared light or other visible light, which is not limited herein. The light source 51 and the reflecting surface 33 are arranged at intervals, so that light rays are transmitted and then fed back to the receiver 52 through the reflecting surface 33, therefore, the light source 51 and the receiver 52 need to be arranged at intervals, a baffle plate can be arranged between the light source 51 and the receiver 52 for blocking, the light rays are prevented from being directly emitted into the receiver 52, the receiver 52 can realize the feedback of different voltage values when receiving the light rays with different intensities, for example, the receiver 52 can be a photoresistor, and the photoresistor displays different resistance values under the irradiation of the light with different intensities. The control component can be a circuit board, and counts after receiving different voltage value signals caused by different fed-back resistors, so that the corresponding pressing depth can be obtained according to the voltage change times and the obtained movement displacement of the pressing push rod 31. Of course, in other embodiments, the receiver 52 may be other photosensitive devices, which have a more sensitive feedback of the light intensity and convert the light intensity into a corresponding electrical signal, such as a photodiode or a photosensor. The control unit may be provided as one structure with the main control board of the pressing body 100, or may be a separate structure, and is electrically connected to the main control board controlling the pressing motion.

The pressing main body 100 of the technical scheme of the invention comprises a supporting component 70 and a driving component 10 arranged on the supporting component 70, and the driving component 11 drives the transmission component 12 to move so as to drive the pressing push rod 31 to reciprocate in the axial direction of the pressing push rod, thereby realizing the cardio-pulmonary resuscitation pressing function of the pressing head. Meanwhile, the light-absorbing area 331 and the light-reflecting area 332 are alternately arranged on the peripheral side surface of the push rod 31, the light-reflecting area 33 is combined with the detection component 50 at a distance, light emitted by the light source 51 passes through the light-reflecting area and then irradiates to the receiver 52, the receiver 52 converts reflected light signals with different intensities into electric signals with different voltage values and then transmits the electric signals to the control component 90, and the control component 90 stores and calculates the change times of the voltage values of the electric signals.

So, then can accurately obtain the degree of depth of pressing push rod 31, and the determine module 50 of this structure is the non-contact detection structure, is difficult to damage, prolongs its life, and reachs the degree of depth of pressing through the record of number of times, and the position and the structure required precision to pressing main part 100 are low, effective the cost is reduced.

When the receiver 52 is configured as a photo-resistor, the detection assembly 50 operates on the following principle: the light source 51 emits incident light 511, the incident light 511 is infrared light or visible light, the incident light 511 forms reflected light 512 with low intensity after passing through the light absorption region 331, the reflected light 512 with high intensity is formed when passing through the light reflection region 332, the receiver 52 receives the reflected light 512 with different intensity, different resistance values are displayed through the photoresistor, different voltages are displayed under rated working current, and the data such as the pressing times, the pressing depth and the like are finally obtained by controlling the component to record the voltage change times.

Optionally, the detecting assembly further includes a fixing member 53, the fixing member 53 is mounted on the supporting assembly 70 and faces the reflective surface 33 of the pressing rod 31, and the light source 51 and the receiver 52 are spaced on a surface of the fixing member 53 facing the reflective surface 33.

In this embodiment, the fixing member 53 is set to more conveniently fix and mount the light source 51 and the receiver 52. The fixing member 53 is connected to the supporting member 70 by means of a snap, an adhesive, or a screw, and faces the reflective surface 33 of the push rod 31, so that light can directly irradiate the reflective surface 33 to improve the emitting efficiency. The fixing member 53 may be a plate or a block, and the material thereof may be plastic or metal, which is not limited herein.

Optionally, the supporting component 70 includes a first supporting seat and a sleeve 73 connected to the first supporting seat, the driving component 10 is installed in the first supporting seat, the sleeve 73 is sleeved on the pressing push rod 31, a mounting hole 731 is formed in the circumferential side surface of the sleeve 73, the fixing component 53 is installed in the sleeve 73 and covers the mounting hole 731, and the mounting hole 731 is arranged at one end of the sleeve 73 close to the pressing head 32.

In this embodiment, in order to protect the push rod 31, the supporting assembly 70 further includes a sleeve 73 connected to a surface of the first supporting seat 71. The sleeve 73 is fitted to the outside of the push rod 31, so that the sleeve 73 has a cylindrical shape matching the shape of the push rod 31, thereby not affecting the linear reciprocating motion thereof. In order to install the fixing member 53, an installation hole 731 is formed in a circumferential side surface of the sleeve 73, the fixing member 53 is installed in the sleeve 73 and covers the installation hole 731, for example, the fixing member 53 and the sleeve are fixedly connected by a screw thread, so that the fixing member is convenient to detach, and the opening shape of the installation hole 731 is matched with the shape of the fixing member 53, so that the loss of light is reduced. The mounting hole 731 is formed in one end of the sleeve 73 close to the pressing head 32, so that detection from a pressed limit position is facilitated, and detection accuracy is improved.

In addition, in order to ensure the working stability of the pressing body 100, the supporting assembly 70 further includes a second supporting seat 72, the second supporting seat 72 is fixed on the peripheral side surface of the sleeve 73, and is configured in a flat plate shape, and a heat dissipating device, such as the fan 13, is mounted on the second supporting seat 72. Two fans 13 are arranged on the second support base 72 at intervals and located on two sides of the sleeve 73 in the radial direction, heat dissipation holes are formed in the positions, corresponding to the fans 13, of the second support base 72, heat dissipation holes are formed, one fan 13 sucks external air flow for heat dissipation, and the other fan 13 blows out air flow inside the pressing body 100, so that heat dissipation circulating air flow is formed, and the heat dissipation effect is improved. Of course, the heat sink may also be a small heat sink or heat spreader.

Optionally, the light-reflecting surface 33 of the pressing push rod 31 is made of a metal material, and a black light-absorbing member is attached to the pressing push rod 31 in the light-absorbing area 331, and the black light-absorbing member is a plastic member.

In this embodiment, the selection is pressed the push rod 31 and is the metal material, when the push rod 31 is pressed in processing, polish the polishing to its surface to make it have better reflection of light effect, simple and convenient can further simplify the structure, and be equipped with black light absorbing member in the position of extinction district 331, black light absorbing member has better light absorbing effect here, thereby can carry out better differentiation with reflection of light district 332, and then promote the detection accuracy. The black light-absorbing member is made of plastic, such as black epoxy resin, or black light-absorbing cloth, and is not limited herein. Of course, in other embodiments, the pressing rod 31 may also be made of plastic, and a metal member is used in the reflective region 332 or a reflective coating is applied thereon, and a light-absorbing material is applied on the light-absorbing region 331.

Optionally, the pressing push rod 31 is provided with a groove at the light-absorbing area 331, and the black light-absorbing member is filled in the groove.

In this embodiment, set up flutedly pressing push rod 31, the recess is located the position of inhaling light zone 331 to locate the recess with black light-absorbing member, and then more conveniently process and inhale light zone 331, improve and distinguish the effect, and make the week side of pressing push rod 31 be glossy surface all the time, promote reciprocating motion's smooth and easy nature. Here, the opening shape of the groove is rectangular, but may be oval or other polygonal shapes.

Optionally, the pressing push rod 31 is made of stainless steel;

and/or the width range of the light-absorbing area 331 in the axial direction is 0.4 mm-0.6 mm, and the width range of the light-reflecting area 332 is 0.4 mm-0.6 mm.

In this embodiment, press push rod 31 to be stainless steel material, structural stability is good and reflection efficiency is high, can promote the reflection intensity of light, and the price is lower relatively, can material saving cost.

In addition to the above structure, the widths of the light absorbing region 331 and the light reflecting region 332 in the axial direction are set substantially the same. Certainly, the widths of the two on the axis are not suitable to be too small, otherwise, the emission times of the light source 51 are more, and the position record of the pressing push rod 31 and the record of the pressing times have larger deviation; and the width setting is not suitable to be too large, otherwise, the sensitivity is not high, and the detection accuracy is not good. Therefore, the width ranges of the light-absorbing area 331 and the light-reflecting area 332 in the axial direction are 0.4mm to 0.6mm, for example, 0.40mm, 0.45mm, 0.50mm, 0.55mm, 0.60mm, etc., which can not only obtain higher detection accuracy, but also reduce the waste of light and improve the light utilization rate.

Certainly, the lengths of the light absorption region 331 and the light reflection region 332 in the circumferential direction of the pressing push rod 31 are not too large, otherwise, material waste is caused, certainly, the lengths are not too small, otherwise, part of light cannot be fed back correctly, detection is not facilitated, and the length can be set according to the actual size of the pressing push rod 31.

Optionally, the transmission component 12 includes a nut and a screw rod, one end of the screw rod is connected to the driving shaft of the driving component 11, the nut is rotationally connected to the circumferential surface of the screw rod, and one end of the nut, which is away from the driving component 11, is connected to the pressing push rod 31, so as to convert the rotary motion of the driving component 11 into the linear reciprocating motion of the pressing push rod.

In this embodiment, the driving member 12 uses a nut and a screw rod, and the structure is simple, the driving stability is good, and the cost is low. One end of the screw rod is connected with a driving shaft of the driving part 11, and is driven by the driving part 11 to rotate, so that the nut rotationally connected with the screw rod moves in the axial direction, namely, moves linearly. The nut drives the pressing push rod 31 to perform linear reciprocating pressing motion.

Optionally, the transmission member 12 further includes a driving wheel, a driven wheel and a transmission belt, the driving wheel is connected to the driving shaft of the driving member 11, the driven wheel is connected to the lead screw, and the transmission belt is sleeved between the driving wheel and the driven wheel.

In this embodiment, the driving member further includes a driving wheel, a driven wheel and a conveyor belt. The driving wheel is connected with the driving shaft, the conveying belt is sleeved between the driving wheel and the driven wheel, and the driven wheel is connected to one end of the screw rod. The during operation, driving piece 11 provides rotary power, and rotary drive drives the action wheel and rotates, and the action wheel drives the conveyer belt through frictional force and rotates, and then drives and rotate from the driving wheel, through to action wheel diameter and from the modification and the regulation of driving wheel diameter to this realizes the rotational speed adjustment to driving piece 11, in order to obtain better speed ratio, improves driving stability. Here, the axis of lead screw and the axis parallel arrangement of driving piece 11, and the lead screw all connects in the action wheel and from one side of driving wheel with driving piece 11, and then effectively practices thrift the space, reduces the volume of pressing main part 100, is favorable to the miniaturized design.

The driving wheel and the driven wheel can be in a gear shape, so that the friction force between the driving wheel and the conveying belt is increased, and the transmission stability is improved. The transmission belt can be a belt or a cloth belt, the surface of the transmission belt is rough, the friction coefficient is large, and the transmission belt can also be a chain and the like in other embodiments. Alternatively, in another embodiment, the transmission effect can be realized by directly engaging and connecting the driving wheel and the driven wheel.

In order to facilitate the adjustment and control of the pressing assembly 30 and save space, the main control board and the control assembly are integrated into a single structure, are mounted on the first supporting seat 71 in a thin plate shape, and are provided with various control circuits and calculation modules, which can record and control the number of turns of the driving member 11, and can also receive and process the electrical signal transmitted by the receiver 52 and output information such as the pressing depth of the pressing assembly 30.

The present invention also provides a cardiopulmonary resuscitation device (not shown) including a compression body 100 and support structures provided on both sides of the compression body 100, wherein the compression body 100 has the structure of any of the compression bodies 100 described above. The specific structure of the pressing body 100 refers to the above embodiments, and since the pressing body 100 adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A pressing body, comprising:

a support assembly;

the detection assembly comprises a light source and a receiver, and the light source and the receiver are both arranged on the support assembly and face the light reflecting surface; and

a control assembly electrically connected to the receiver;

the driving part drives the transmission part to move so as to drive the pressing push rod to reciprocate in the axis direction of the pressing push rod, light emitted by the light source is emitted to the receiver after passing through the reflecting surface, the receiver converts different optical signals into electric signals and transmits the electric signals to the control assembly, and the control assembly stores and calculates the change times of the voltage value of the electric signals.

2. The pressing body of claim 1 wherein the sensing assembly further comprises a mounting member mounted to the support assembly and facing the reflective surface of the pressing plunger, the light source and the receiver being spaced apart from each other on a surface of the mounting member facing the reflective surface.

3. The pressing body according to claim 2, wherein the supporting member includes a first supporting seat and a sleeve connected to the first supporting seat, the driving member is mounted to the first supporting seat, the sleeve is sleeved on the pressing rod, a mounting hole is formed in a peripheral side surface of the sleeve, the fixing member is mounted to the sleeve and covers the mounting hole, and the mounting hole is formed in an end of the sleeve close to the pressing head.

4. The pressing body as claimed in any one of claims 1 to 3, wherein the light-reflecting surface of the pressing rod is made of metal, and the pressing rod is provided with a black light-absorbing member adhered to the light-absorbing region, wherein the black light-absorbing member is made of plastic.

5. The pressing body as claimed in claim 4, wherein the pressing rod is provided with a groove at the light absorption area, and the black light absorbing member is filled in the groove.

6. The pressing body of claim 4, wherein the pressing plunger is stainless steel;

and/or the black light-absorbing piece is made of epoxy resin;

7. The pressing body according to one of claims 1 to 3, characterized in that the receiver is provided as a photoresistor.

8. The pressing body of claim 1 wherein the transmission member comprises a nut and a lead screw, one end of the lead screw is connected to the driving shaft of the driving member, the nut is rotatably connected to the peripheral surface of the lead screw, and one end of the nut facing away from the driving member is connected to the pressing rod to convert the rotational motion of the driving member into the linear reciprocating motion of the pressing rod.

9. The pressing body of claim 8 wherein the transmission member further comprises a driving wheel, a driven wheel and a transmission belt, the driving wheel is connected to the driving shaft of the driving member, the driven wheel is connected to the lead screw, and the transmission belt is sleeved between the driving wheel and the driven wheel.

10. Cardiopulmonary resuscitation machine comprising a compression body and support structures provided on both sides of the compression body, the compression body being as claimed in any one of claims 1 to 9.