CN115569053A - Automatic external chest compression system and use method - Google Patents

Abstract

The invention provides an automatic external chest compression system and a using method thereof, wherein the automatic external chest compression system comprises: the pressing device is connected to the frame, and a pressing detection device for monitoring the pressing depth of the pressing device is arranged on the side of the frame; the pressing device is connected with a driving device, the driving device can drive the pressing device to press a patient, and the pressing detection device is electrically connected with the driving device and used for controlling the power output of the driving device through the monitored pressing depth. The pressing depth of the pressing device acting on a patient can be monitored in real time through the pressing detection device, the accuracy of monitoring the pressing depth is improved, and the monitored pressing depth enables the pressing detection device to adjust the power output of the driving device in real time, so that the pressing depth is in a normal range.

Description

Automatic external chest compression system and use method

Technical Field

The invention relates to the technical field of medical instruments, in particular to an automatic external chest compression system and a using method thereof.

Background

Sudden cardiac arrest has very high timeliness requirements for clinical treatment, and the overall prognosis effect is not ideal. Chest compressions are an important component of cardiopulmonary resuscitation (CPR), and chest compressions increase the intrathoracic pressure and directly compress the heart to produce blood flow, so the compression depth is closely related to the cerebral perfusion pressure, cerebral blood flow, and prognosis, and increased survival rate increases with increased compression depth. The international guidelines for cardiopulmonary resuscitation in 2015 indicate that the standard of high-quality cardiopulmonary resuscitation is that the compression depth and frequency are 5-6cm and 100-120 times/min respectively, the external part of the chest is completely rebounded, the compression interruption is avoided, and the like.

The depth of cardiopulmonary resuscitation compressions is not the same for adults and children. For adults, the depth of compression is required to be between 5-6 cm. The compression amplitude of the children and the infants is at least 1/3 of the anteroposterior diameter of the chest, namely the compression amplitude of the children is about 5cm, and the compression amplitude of the infants is about 4 cm. Because the complications of extrathoracic compression include rib fracture, pericardial hematocele or cardiac tamponade, pneumothorax, hemothorax, lung contusion and the like, the requirement on depth is strict, over-depth and over-shallowness are avoided, the effect cannot be achieved if the over-shallowness is avoided, the occurrence rate of a plurality of complications (such as rib fracture) easily occurs if the over-shallowness is too deep, and the rescue work is difficult.

Disclosure of Invention

A first object of the present invention is to provide an automatic external chest compression system, which can monitor the compression depth in real time and automatically adjust the compression depth according to the monitored compression depth, so that the amplitude of the cardiopulmonary resuscitation compression is within a normal range.

The second objective of the present invention is to provide a method for using the automatic external chest compression system, which can perform cardiopulmonary resuscitation on a patient in time, so as to effectively achieve precise treatment.

The invention provides an automatic external chest compression system for cardiopulmonary resuscitation compression, comprising: the pressing device is connected to the frame, and a pressing detection device for monitoring the pressing depth of the pressing device is arranged on the side of the frame;

the pressing device is connected with a driving device, the driving device can drive the pressing device to press a patient, and the pressing detection device is electrically connected with the driving device and used for controlling the power output of the driving device through the monitored pressing depth.

Furthermore, the pressing device is arranged on the upper portion of the frame, the driving device is installed on the lower portion of the frame, and a pulling belt capable of driving the pressing device to move up and down is connected to the driving device.

Furthermore, press device includes the press pad, it is in to pull the area including setting up two of press pad both sides, every one end that pulls the area through the buckle with press pad can dismantle the connection, the other end pass the frame with drive arrangement meets.

Further, drive arrangement includes two motors that can counter-rotate relatively, all install the gyro wheel on the output shaft of motor, the pulling area is connected on the gyro wheel.

Further, press detection device including connect in the lidar board of frame lateral part, install a plurality of lidar that are to arrange in a row on the lidar board.

Further, the number of the laser radars is 24.

Further, a main control module, a signal transmitting module and a signal receiving module are arranged on the laser radar board, the signal transmitting module transmits laser under the control of the main control module, and the signal receiving module is used for receiving the reflected return light signals, and performing signal processing and algorithm processing on the received reflected return light signals through the main control module to monitor the pressing depth.

Furthermore, the signal transmitting module comprises a driving circuit for transmitting laser, the signal receiving module comprises a return light detection circuit for receiving return light, and the driving circuit and the return light detection circuit are electrically connected with the main control module.

Furthermore, the plurality of laser radars are electrically connected with the driving circuit and the return light detection circuit.

Furthermore, each laser radar is respectively connected with a light emitting diode used for emitting laser and receiving return light.

Further, the driving circuit is an LD driving circuit, and the light return detection circuit is a PD light return detection circuit.

Further, the main control module comprises a 32-bit ARM core single chip microcomputer.

Furthermore, the laser radar board is also provided with a signal multiplexing module, and the signal multiplexing module comprises a transmitting multiplexer and a receiving multiplexer and is used for only conducting one path of the laser radar when transmitting laser and receiving return light each time.

Further, the frame is of a foldable structure and comprises an upper frame, a middle frame and a lower frame which are connected in a split mode, an upper back plate, a middle plate and a lower back plate are distributed on the upper frame, the middle frame and the lower frame, and the laser radar plate, the pressing pad and the motor are all connected to the upper back plate.

Furthermore, the upper back plate is provided with a motor fixing hole, a circuit board mounting hole, a pulling belt key groove and a binding belt key groove.

The use method of the automatic external chest compression system comprises the following steps:

1) Moving the patient to the automatic chest compression system and fixing the compression device;

2) Starting a driving device and a pressing detection device, and monitoring the pressing depth in real time;

3) The output of the drive is adjusted by the monitored compression depth during the compression process.

The invention has the following beneficial effects: the pressing depth of a patient acted on by the pressing device can be monitored in real time through the pressing detection device, the accuracy of monitoring the pressing depth is improved, and the power output of the driving device is adjusted in real time through the monitored pressing depth, so that the pressing depth is in a normal range.

By the use method of the automatic external chest compression system, the power output of the driving device can be adjusted in time according to the monitored compression depth, so that the compression device keeps the patient in a normal range, the compression depth can be accurately monitored, and the rescue efficiency is extremely high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of an automatic external chest compression system after the main structure is folded;

FIG. 2 is a bottom view of the main structure of the automatic chest compression system;

FIG. 3 is a schematic diagram of the framework of the main structure of the automatic chest compression system;

FIG. 4 is a schematic diagram of the structure of the driving device in the automatic chest compression system;

FIG. 5 is a schematic structural view of a right-angle vertical slot in the driving device;

FIG. 6 is a schematic view of the motor mounting structure of the driving device;

FIG. 7 is a schematic view of a roller of the driving device;

FIG. 8 is a schematic view of the structure of the upper and lower plates in the main structure;

FIG. 9 is a schematic view of a lower back plate in a main body structure;

FIG. 10 is a schematic view of the structure of the middle plate in the main structure;

FIG. 11 is a schematic view of a hand lift frame on one side thereof;

FIG. 12 is a schematic view of the other side of the hand-lift frame;

FIG. 13 is a schematic structural view of the cross frame;

FIG. 14 is a schematic view of the pressing device;

FIG. 15 is a schematic view of the securing strap configuration;

FIG. 16 is a schematic diagram of a return light detection circuit;

FIG. 17 is a schematic diagram of a drive circuit;

FIG. 18 is a schematic diagram of a master control circuit;

FIG. 19 is a schematic diagram of a receive multiplexing circuit;

FIG. 20 is a schematic diagram of a transmit multiplexing circuit;

FIG. 21 is a schematic diagram of a power supply circuit;

FIG. 22 is a schematic diagram of a communication module;

fig. 23 is a schematic diagram of an interface module of the lidar.

In the figure:

1-upper back plate; 2-a middle plate; 3-a lower back plate; 4-an upper frame; 5-a middle frame; 6-a lower frame; 7-a support leg; 8-a hinge; 9-motor fixing holes; 10-circuit board mounting holes; 11-a fixation hole; 12-pulling the belt key groove; 13-strap keyway; 14-handrail keyway; 15-mounting holes; 16-right angle fixing plate; 17-right-angle vertical grooves; 18-a motor; 19-a roller; 20-pulling the belt; 21-reinforcing ribs; 22-vertical groove fixing holes; 23-a rotating shaft; 24-vertical slots; 25-through slot; 26-buckling; 27-pressing pad; 28-a strap; 29-hand frame; 30-a spring; 31-a connecting rod; 32-a key pin; 33-a transverse frame; 34-laser radar plate mounting groove; 35-link track groove; 36-a spring groove; 37-pin slot; 38-small right-angle fixing plate; 39-motor fixing peripheral holes; 40-motor mounting holes; 100-a frame; 200-a pressing device; 300-a press detection device; 400-driving means.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1-2, an automatic chest compression system for cardiopulmonary resuscitation provided by the present invention includes: the pressing device comprises a frame 100, a pressing device 200 is connected to the frame 100, and a pressing detection device 300 for monitoring the pressing depth of the pressing device 200 is arranged on the side of the frame 100;

the pressing device 200 is connected with a driving device 400, the driving device 400 can drive the pressing device 200 to press a patient, and the pressing detection device 300 is electrically connected with the driving device 400 and used for controlling the power output of the driving device 400 through the monitored pressing depth.

The automatic external chest compression system mainly performs cardiopulmonary resuscitation compression on a patient, monitors the compression depth of the patient by the compression device 200 in real time through the compression detection device 300, and controls the power output of the driving device 400 in real time through the monitored compression depth so as to achieve the technical purpose of adjusting the compression depth.

The pressing device 200 is installed at the upper portion of the frame 100, the driving device 400 is installed at the lower portion of the frame 100, and the pulling belt 20 is connected to the driving device 400. Specifically, the driving device 400 is connected to the pressing device 200 by the pulling belt 20, so that the driving device 400 can drive the pressing device 200 to move up and down at the chest of the patient, thereby achieving the function of performing cardiopulmonary resuscitation.

The pressing device 200 specifically includes a pressing pad 27, two sides of the pressing pad 27 are respectively connected with the pulling belts 20, the pulling belts 20 include two strips disposed on two sides of the pressing pad 27, and the two pulling belts 20 are respectively detachably connected with the pressing pad 27.

Specifically, one end of each pulling strip 20 is detachably connected with the pressing pad 27 through the buckle 26, so that the pressing pad 27 is conveniently fixed at the position of the chest of the patient; the other end is connected with the driving device 400 through the frame 100. In the compression process, the driving device 400 drives the pulling belt 20 to tighten and expand, so as to realize the cardiopulmonary resuscitation compression on the patient. In order to ensure stable and reliable tension output of the pulling belt 20, a belt material with high flexibility and without elasticity is adopted as the pulling belt 20, so that the power output by the driving device 400 can be fully and completely transmitted to the pressing pad 27.

The buckles 26 are arranged on two sides of the middle of the pressing pad 27, so that the pulling force applied by the pulling belt 20 can act on the center line position of the pressing pad 27, and the pressing force application is accurate and reliable.

The depth of the compression of the patient by the compression pad 27 is controlled by the extent of tightening and expanding of the pull band 20. Specifically, the driving device 400 is electrically connected to the pressing detection device 300, and sends a control signal to the driving device 400 according to the pressing depth monitored by the pressing detection device 300 in real time, so that the power output range of the driving device 400 can be controlled, and the pressing depth is always maintained within a normal range.

Specifically, the driving device 400 includes two motors 18 mounted on the frame 100, and the two motors 18 can rotate in opposite directions with respect to each other. The pulling belt 20 can be tightened and expanded at the connection end of the driving device 400 by the two motors 18 rotating in opposite directions.

The output shafts of the two motors 18 are connected with rollers 19, the two pulling belts 20 positioned on the two sides of the pressing pad 27 are respectively connected to the two rollers 19 in a clamping manner, the amplitude of tightening and expanding the pulling belts 20 is realized by controlling the rotation amplitude of the two opposite rotating motors 18, and the pressing depth of the pressing pad 27 is finally controlled.

In the pressing process, each motor 18 continuously rotates in a forward and reverse rotation mode, and the two motors 18 rotate in opposite directions, so that the two pulling belts 20 can be driven to be tightened and expanded simultaneously.

Before pressing, the pressing pad 27 is fixedly attached to the chest of the patient, and when pressing downward, the pulling band 20 pulls the pressing pad 27 tightly, so that the pulling force is converted into the downward pressure of the pressing pad 27. In the expanding and expanding process of the pulling belt 20, the pressing pad 27 is restored to the initial state by the resilience of the chest of the patient, and then the pulling and tightening are repeated, and the pressing process of the cardiopulmonary resuscitation is completed by repeating the alternation.

In one embodiment, the pressing depth is monitored by the pressing detection device 300 through a laser radar disposed at the side of the pressing pad 27, and the pressing detection device 300 includes a laser radar board connected to the side of the frame 100, on which 24 laser radars are mounted in a row.

Through set up 24 laser radar that are to be listed as and arrange on the laser radar board, be vertical row preferentially and arrange, constituted 24 line laser radar, can form multi-thread laser pulse, effectively improve the monitoring operating mode to pressing the degree of depth, improve the control precision.

The 24-line lidar is attached to the frame 100 during operation and the monitoring range of the compression depth covers the entire up and down range of the compression pad 27.

The laser radar board is provided with a main control module, a signal transmitting module and a signal receiving module, the signal transmitting module transmits laser through the laser radar under the control of the main control module, the signal receiving module is used for receiving reflected return light signals, and the main control module is used for carrying out signal processing and algorithm processing on the received reflected return light signals and monitoring the pressing depth.

The control of the main control module to the signal transmitting module and the signal receiving module can realize accurate monitoring of the pressing depth through the modes of transmitting and detecting laser signals, and the accuracy of the rescue process is effectively improved. Through the formed 24-line laser pulse, the monitoring precision can be ensured, and the interference of the external light environment on the reflected return light signal is reduced.

In the conventional press depth monitoring, only one laser radar is arranged, and the press depth is monitored by receiving scattered light through a single-line laser transmitting and receiving circuit. The single-line laser is very susceptible to the influence of ambient visible light, so that the ambient light is mixed in the scattered light, thereby influencing the reception of the scattered light after reflection.

The laser pulse formed by the multi-line laser radar can reduce the mixing of ambient light in scattered light to the maximum extent and improve the monitoring precision of the laser on the pressing depth.

In the compression process of cardiopulmonary resuscitation, the 24-line laser radar continuously emits pulse laser, the compression depth is accurately processed through signal processing and an algorithm, and the purpose of monitoring the compression depth in real time is achieved.

Referring to fig. 16-18, the signal emitting module includes a driving circuit for emitting laser, the signal receiving module includes a return light detecting circuit for receiving the reflected and returned scattered light of the laser after encountering an obstacle, and both the driving circuit and the return light detecting circuit are electrically connected to the main control module. The main control module controls the driving circuit and the return light detection circuit, can control the driving circuit to provide a signal source, processes the received reflected return light signal, and provides various necessary signals for other circuit parts.

In the invention, each laser radar is electrically connected with the driving circuit and the return light detection circuit, the driving circuit and the return light detection circuit are controlled through the master control model, so that 24 lines of laser radars form laser pulses, and each laser radar is respectively connected with a light emitting diode for emitting laser and receiving return light.

In the pressing process, the 24-line laser radar adopts a time-sharing multiplexing principle, only one light-emitting diode is lighted at the same time, a section of laser pulse is emitted, the light-emitting diode is used for receiving a return light signal, an ADC (Analog to Digital Converter) is used for recording an echo waveform, fourier transform is carried out on the waveform after the recording is finished, and whether an obstacle exists at the point is judged by measuring the energy amplitude at the position corresponding to modulation frequency in an amplitude spectrum and setting a threshold value.

In one specific example, the distance between the 24 light emitting diodes in the signal transmitting module is 5mm, and only one light emitting diode is lighted at the same time by using the time division multiplexing principle, and the echo intensity of the light emitting diode is measured. When a certain laser beam does not touch an obstacle, the laser radar signal receiving module cannot receive a feedback signal of the laser pulse, and the pressing depth position value corresponding to the laser beam is 0.

Each light emitting diode emits laser pulse with specific high frequency f0, at the moment, dark current is generated on a photodiode PIN tube in a light return detection circuit, the dark current is converted into dark voltage, the dark voltage is filtered and output to an ADC, fourier transform is carried out, and amplitude response of the specific frequency f0 is read out. If the amplitude is correspondingly larger than the set threshold value a, the point in the cardio-pulmonary resuscitation process is marked as 1, and an obstacle exists.

The 24-line laser radar is time-division multiplexed and sequentially lightened, and the pulse frequency is high. The pressing depth and the pressing frequency are respectively 5-6cm and 100-120 times/min each time, 1.5-2 times of pressing is carried out within 1s, the frequency of emitted laser is far higher than the pressing frequency, and accurate signal feedback information receiving within a short time is guaranteed.

If the 24-line lidar has the following light emitting diodes LD placed every 5mm and continuously emits light pulses, the measurement result is that the pressing depth is: 8 x 5=40mm. At this time, the main control module in the pressing detection module judges that the pressing depth is less than the minimum depth of 5cm, and immediately sends a touch signal to the motor 18 in the driving device 400, so that the rotation amplitude of the roller 19 is increased when the motor 18 rotates, and the tightening amplitude of the pulling belt 20 is increased, thereby increasing the pressing depth of the pressing pad 27 on the patient. Through the real-time adjustment of the main control module to the motor 18, the pressing pad 27 can be positioned in a normal pressing depth range, the operation during pressing is greatly improved, and the rescue rate of a patient is effectively improved.

In another embodiment, the driving circuit is an LD driving circuit, and the return light detecting circuit is a PD return light detecting circuit. Specifically, the LD driving circuit is composed of a voltage-controlled constant current source driving circuit and a waveform shaping circuit, the waveform shaping circuit is composed of a resistance voltage dividing circuit and a first-order passive low-pass filter circuit, and the voltage-controlled constant current source circuit is mainly composed of a field effect transistor, an operational amplifier, a sampling resistor and a plurality of resistor capacitors. The function of which is to drive the light emitting diode to emit laser pulses of a specific waveform.

The PD return light detection circuit can convert reverse dark current generated on the photodiode PIN tube into voltage, the voltage is amplified through the in-phase proportional amplifier circuit, and the voltage is output to the ADC after low-pass filtering.

Referring to fig. 19-20, the time-division multiplexing principle is specifically implemented by a signal multiplexing module connected to a laser radar board, and the signal multiplexing module includes a transmitting multiplexing circuit and a transmitting multiplexer respectively; a receiving multiplexing circuit and a receiving multiplexer.

The transmitting multiplexer and the receiving multiplexer are both composed of analog selectors, only one path is conducted during each transmitting in operation, and only one light emitting diode can be lighted at each time.

When transmitting, only one path of laser receiving is conducted each time, so that only laser return light signals transmitted by the corresponding LD driving circuit can be received each time.

The main control module in the embodiment comprises a 32-bit ARM core single chip microcomputer, the instruction system, the bus structure, the debugging technology, the power consumption, the cost performance and the like of the main control module exceed those of a traditional 51-series single chip microcomputer, and meanwhile, a large number of internal and external devices are integrated in the 32-bit ARM core single chip microcomputer, so that the function and the reliability are greatly improved.

Referring to fig. 21-22, in addition to the above modules, the laser radar panel of the present invention is further provided with a communication module and a power module, wherein the communication module can automatically process and convert signals of different types, and the power module provides power for the entire press detection device 300, which is not described herein again.

In another preferred embodiment, a photodiode in a signal receiving module of the 24-line lidar board receives a return light signal, an ADC is used for recording a return waveform, fourier transform is performed on the waveform after recording, and the amplitude of energy at a modulation frequency corresponding to an amplitude spectrum is measured. The 24-line laser radar plate consists of six modules, namely a signal multiplexing module, a communication module, a power supply module, a signal transmitting module and a signal receiving module.

The 32-bit ARM core single chip microcomputer adopts an STM32F103 chip as a main control chip, provides a signal source for the signal transmitting module, processes received signals and provides various necessary signals for other circuit parts. The necessary signals are composed of pins PA1_ ADC, PA2_ TIM2_ ORI, MCU _ TXD, MCU _ RXD, MAX _ RE, and MAX _ DE.

The signal multiplexing module is divided into a transmitting multiplexer and a receiving multiplexer. The transmitting multiplexer is composed of 3 analog selectors with 8 paths, only one path is conducted when transmitting each time, only one light emitting diode can be lightened at each time, the receiving multiplexer is composed of 3 analog selectors with 8 paths, only one path is conducted at each time, only the correspondingly transmitted laser signal is received at each time, the signal transmitting module is composed of an LD driving circuit, namely, a voltage-controlled constant current source driving circuit and a waveform shaping circuit, after voltage division is carried out by input of a trigger, a voltage-controlled constant current source is input through a low-pass filter, the light emitting diode is driven by the voltage-controlled constant current source, and the output light waveform is the required light emitting waveform. The receiving module is composed of a light return detection circuit, converts reverse current of the photodiode into voltage, and amplifies the voltage through the same-phase proportional amplifier to carry out filtering output.

Referring to fig. 19 and in conjunction with fig. 23, the output of the PA1 \ ADC1 \ out0 and the signal receiving module are connected, based on the 24-line lidar in the present invention, 24 signal receiving modules are needed, the outputs of the 24 signal receiving modules are named PA1_ ADC1_ OUT0, PA1_ ADC1_ OUT1, and then pushed, until PA1_ ADC1_ OUT23, each output is connected to the corresponding receiving multiplexing circuit; the Trig in the signal transmitting module has the same principle with the circuit composition of the signal receiving module.

Referring to the main control module circuit in fig. 18 and the signal multiplexing modules in fig. 19 to fig. 20, three interfaces in MUX _ A0 to MUX _ A2 are used as address ends of 8-way analog selectors, and are used as three address ends, the third power of 2 is equal to 8 ways, the three address ends are also connected to the analog selectors, and are controlled by the main control circuit, and the purpose of routing one of the 8 ways can be achieved through the connection between the main control module and the analog selectors, which is not described herein again.

In another preferred embodiment, in addition to the above-mentioned circuit components, the compression detection device 300 of the present invention is connected to the main structure of the automatic chest compression system, and the control operation of the compression device 200 is realized by controlling the driving device 400.

Referring to fig. 3-15, the driving device 400 in this embodiment is mounted on the frame 100, the frame 100 is a foldable structure and includes an upper frame 4, a middle frame 5 and a lower frame 6 which are separately connected, an upper back plate 1, a middle plate 2 and a lower back plate 3 are distributed on the upper frame 4, the middle frame 5 and the lower frame 6, and the lidar plate, the pressing pad 27 and the motor 18 are all connected to the upper back plate 1.

The upper back plate 1 is provided with a motor fixing hole 9, a circuit board mounting hole 10, a pulling band key groove 12 and a binding band key groove 13 for fixing the motor 18 and the lidar circuit board and allowing the pulling band 20 and the binding band 28 to penetrate through the upper back plate 1.

Specifically, the main structure of the automatic external chest compression system in this embodiment includes a supporting and fixing device, the supporting and fixing device adopts a mode of combining a back plate with the frame 100 to form a hollow structure and is supported by the supporting legs 7 to realize folding and unfolding, the driving device 400 is installed on the lower surface of the hollow structure formed by the supporting and fixing device and is connected with the compression device 200 through the pulling belt 20, and the compression detection device 300 is connected with the supporting and fixing device through the spring 30 mechanism.

The back plate structure of the supporting and fixing device is composed of carbon fiber plates, the frame 100 structure is formed by connecting aluminum alloy with the supporting legs 7 through splicing pieces, and the back plate comprises an upper back plate 1, a lower back plate 3 and a middle plate 2.

The frame 100 comprises an upper frame 4, a middle frame 5, a lower frame 6, support legs 7 and hinges 8 which are connected in a split mode. The middle of the upper frame 4 is connected with the upper back plate 1 through a fixing hole 11, and the lower bottom surface is connected with four supporting legs 7 through a right-angle fixing plate 16; the middle of the lower frame 6 is connected with the lower back plate 3 through a fixing hole 11, and the lower bottom surface is connected with four supporting legs 7 through a right-angle fixing plate 16; the middle frame 5 is connected to the middle plate 2 through a mounting hole 15, and the middle portion of the frame 100 is connected to the upper frame 4 and the lower frame 6 through two hinges 8.

The upper back plate 1 is distributed with: the circuit board mounting hole 10 matched with the laser radar circuit board, the motor mounting hole 40 matched with the motor 18 and the motor 18 bracket, the pulling belt key groove 12, the pulling belt key groove 13 and the handrail key groove 14 reserved for the strap 28 and the pulling belt 20 to penetrate through the upper back plate 1 ensure the connection stability and the assembly effectiveness of the laser radar circuit board, the motor 18, the strap 28 and the pulling belt 20, reserve the folding space of the handrail, realize the fixation of a patient in the cardio-pulmonary resuscitation process and prevent the displacement of the patient in the resuscitation process. The middle plate 2 is connected with the upper back plate 1 and the lower back plate 3 through hinges 8, and a space for a motor 18 part and the like is reserved after the middle plate is folded. The lower back plate 3 mainly plays a role in bearing load to form the whole device.

The frame 100 surrounds the edges of the back panel and is connected thereto by hinges 8. The hinge 8 is composed of two half leaves which are respectively arranged on two frames, the upper frame 4 and the lower frame 6 are respectively connected with the middle frame 5 through half leaf combination, 8 supporting legs 7 are arranged at the bottom of the frame 100 for supporting, and a supporting and fixing device is formed through the combination of the back plate and the frame 100.

The motor 18 in the driving device 400 is specifically installed on a motor 18 support structure, the motor 18 support structure is a right-angle vertical groove 17, assembling holes are uniformly distributed on mutually perpendicular right-angle surfaces, a vertical groove fixing hole 22 is arranged on one surface parallel to the back plate, the motor 18 support and the back plate are fixedly combined through assembling bolts, and the motor 18 is supported; and motor fixing peripheral holes 39 and motor mounting holes 40 are respectively formed in two sides of one side perpendicular to the back plate, and reinforcing ribs 21 are arranged in the middle of the right-angle vertical grooves 17, so that the overall strength is improved.

The motor 18 specifically comprises two motors which are symmetrically distributed on two sides of the bottom of the upper back plate 1, and the rotating shaft 23 of the motor 18 penetrates through the motor mounting hole 40 and is connected with the roller 19. The rotating shaft 23 of the motor 18 is provided with a flat key, the roller 19 is provided with a vertical groove 24 matched with the flat key, the rotating shaft 23 of the motor 18 and the roller 19 are connected in a flat key matching mode, the roller 19 is hollow, and the surface of the hollow cylinder is provided with two through grooves 25 which are convenient for the pulling belt 20 to pass through.

The pressing device 200 includes a pressing pad 27 and a buckle 26, wherein the pressing pad 27 is made of soft material sponge, and the pulling belt 20 is connected with the pressing pad 27 to realize full-enclosed pressing. The spongy cushion is used for increasing the toughness of the pressing part, plays the role of effectively relieving impact force, improves the safety on the premise of ensuring the pressing strength, enables the stress to be more attached to the thorax, reduces the power consumption and ensures the pressing efficiency.

One end of the pulling belt 20 is matched and connected with the roller 19 through two through grooves 25 of the roller 19, and the other end of the pulling belt passes through the pulling belt key groove 12 of the back plate and is connected with a buckle 26 together for unlocking the pressing pad 27 and adjusting the initial position of the pressing pad 27. The ends of the pulling belt 20 connected with the buckles 26 are respectively connected with the two ends of the pressing pad 27 to form a closed loop. Retraction of the pull tape 20 is accomplished by reversing the rotation of the motor 18 and reversing the two directions of rotation. Pulling the strap 20 effects a force transfer that converts the force of the motor 18 rotation into a force that compresses or contracts. Two ends of the buckle 26 are respectively connected with the pressing pad 27, so that the buckle is convenient to disassemble and is beneficial to quick rescue.

The motor 18 drive adopts the H bridge circuit to design, and the H bridge circuit comprises four N type field effect transistors to use two half-bridge driver chips to drive the MOS, and when the motor 18 corotates, the upper left field effect transistor and the lower right field effect transistor are switched on, and the upper left field effect transistor and the upper right field effect transistor are switched off.

In order to prevent the patient from shifting during the pressing process, the main body structure is also connected with a fixing bandage 28, the fixing bandage 28 passes through the bandage key slot 13 on the upper back plate 1 and forms a closed loop state above the upper back plate 1 through the buckle 26, and the fixing bandage is used for fixing the patient during the cardiopulmonary resuscitation and preventing the patient from shifting during the resuscitation.

The main structure further comprises a hand-lifting frame 29, a spring 30, a connecting rod 31, a key pin 32 and a cross frame 33, wherein one side of the hand-lifting frame 29 is provided with a laser radar plate mounting groove 34, the other side of the hand-lifting frame is provided with a connecting rod track groove 35, one end of the cross frame 33 is fixedly connected with the supporting leg 7 of the supporting frame 100 through a small right-angle fixing plate 38, and two side surfaces of the other end are respectively provided with a spring groove 36 and a pin groove 37.

The hand-lifting frame 29 is of an integrated retractable type, so that the space is saved and the carrying is convenient. The hand-lifting frame 29 is matched with the spring 30 through the connecting rod 31, and the hand-lifting frame 29 is driven to contract. One end of the link 31 is engaged with the key pin 32, moves along the link trace groove 35 by a pressing force during contraction, and the other end is engaged with the key pin 32, so that the other end of the link 31 is fixed to the cross frame 33. The cross frame 33 is provided with a pin slot 37 and a spring slot 36, which are respectively used for fixing one end of the connecting rod 31 and one end of the spring 30, and are positioned on the same plane with the bottom supporting leg 7 of the frame 100, thereby saving space. The spring 30 is arranged at one end of the lower surface of the hand-lifting frame 29 and at the other end of the spring is arranged in the spring groove 36 of the cross frame 33, and is used for connecting the handrail and the cross frame 33 to realize the ejection of the handrail.

Through the main structure of the automatic external chest compression system and the 24-line laser radar board arranged on the main structure, the precision of compression depth monitoring can be effectively improved while the rapid compression of a patient is realized, and the rescue environment in the cardiopulmonary resuscitation process is greatly improved.

The invention also provides a using method of the automatic external chest compression system, which comprises the following steps:

1) Opening a main structure of the automatic external chest compression system and moving the patient to the automatic external chest compression system;

2) The pressing pad 27 is placed on the chest of the patient and is fixedly connected with the pulling belt 20 through the buckle 26;

3) After the patient is fixed, the driving device 400 is started to press, and meanwhile, the pressing detection device 300 is started to monitor the pressing depth of the pressing pad 27 in real time;

4) The power output of the driving device 400 is controlled by the main control module in the pressing detection device 300 so that the pressing depth is maintained within a normal range.

In particular, the device is folded during non-use and unfolded during use. In case no movement is required: pressing the handrail parts at two sides to pop up the handrail parts, opening the buckles 26 at two sides of the pressing pad 27 to enable the patient to lie flat on the system, enabling the buckles 26 at two sides of the pressing pad 27 to penetrate through the armpits of the patient to be buckled, checking whether the pressing part is correct or not, further adjusting, opening an operating panel startup key after adjusting, selecting pressing parameters, and pressing.

If the carrying is needed: the fixing bands 28 disposed on both sides of the patient are engaged by the engaging members 26 so that the pressing portion of the patient does not move too much during the transportation process, and then the patient is transported to an ambulance or the like for more accurate treatment.

In the cardio-pulmonary resuscitation process, the 24-line laser radar works to continuously emit pulse light waves, and the accurate compression depth is processed through a signal processing algorithm, so that the purpose of monitoring the compression depth in real time is achieved.

In the monitoring process, if the pressing depth is less than 5cm, the main control module in the pressing detection device 300 sends a trigger signal to the motor 18, so that the motor 18 increases the revolution during rotation, and further drives the pulling belt 20 to increase the tightening amplitude, thereby increasing the pressing depth; if the pressing depth is greater than 6cm, the main control module in the pressing detection device 300 sends a trigger signal to the motor 18, so that the motor 18 reduces the number of revolutions during rotation, and further drives the pulling belt 20 to reduce the tightening amplitude, thereby reducing the pressing depth.

After the treatment is carried out or the treatment is finished, in the process of removing the device, the buckles 26 of the fixing belt and the buckles 26 on the two sides of the pressing pad 27 are opened, the patient is moved to other places, the handrail parts on the two sides are pressed again, the device is retracted into the device, and finally the device is folded and stored.

Through the use method, the cardiopulmonary resuscitation can be performed on the patient in time, and importantly, through the combination of the compression detection device 300 and the driving device 400, the compression depth can be in a normal compression range, the rescue efficiency is extremely high, and the compression depth can be accurately monitored.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An automated external chest compression system for cardiopulmonary resuscitation compression, comprising: the pressing device is connected to the frame, and a pressing detection device for monitoring the pressing depth of the pressing device is arranged on the side of the frame;

the pressing device is connected with a driving device, the driving device can drive the pressing device to press a patient, and the pressing detection device is electrically connected with the driving device and used for controlling the power output of the driving device through the monitored pressing depth.

2. The automatic external chest compression system of claim 1 wherein said compression device is disposed at an upper portion of said frame, said drive means is mounted at a lower portion of said frame, and said drive means is coupled to a pull belt capable of moving said compression device up and down.

3. The automated external chest compression system of claim 2 wherein said compression device comprises a compression pad, said pull straps comprise two strips disposed on opposite sides of said compression pad, each of said pull straps having one end removably connected to said compression pad by a snap fit and the other end connected to said drive device through said frame.

4. The automatic chest compression system of claim 3 wherein said drive means comprises two motors capable of counter-rotating, each motor having an output shaft with a roller mounted thereon, said pull belt being connected to said rollers.

5. The automated chest compression system of any one of claims 1-4 wherein the compression detection means comprises a lidar plate attached to a side of the frame, the lidar plate having a plurality of lidar mounted in a column.

6. The automatic chest compression system of claim 5, wherein the laser radar board is provided with a main control module, a signal transmitting module and a signal receiving module, the signal transmitting module transmits laser under the control of the main control module, and the signal receiving module is used for receiving the reflected return light signal and processing the received reflected return light signal through the main control module so as to monitor the compression depth.

7. The automatic chest compression system of claim 6, wherein the signal emitting module comprises a driving circuit for emitting laser, the signal receiving module comprises a return light detecting circuit for receiving return light, and the driving circuit and the return light detecting circuit are both electrically connected to the main control module.

8. The automatic chest compression system of claim 7 wherein a plurality of the lidar are each electrically connected to the drive circuit and the return light detection circuit; and each laser radar is respectively connected with a light emitting diode for emitting laser and receiving return light.

9. The automatic chest compression system of claim 7 further comprising a signal multiplexing module disposed on the lidar board, wherein the signal multiplexing module comprises a transmit multiplexer and a receive multiplexer for only conducting one path of the lidar each time the lidar is transmitting and receiving return light.

10. A method of using the automatic chest compression system of any one of claims 1-9, comprising the steps of:

1) Moving the patient to the automated external chest compression system and securing the compression device;

2) Starting a driving device and a pressing detection device, and monitoring the pressing depth in real time;

3) The output of the drive is adjusted by the monitored compression depth during the compression process.

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