Medical device for cardiopulmonary resuscitation

Abstract

The invention discloses a medical device for cardiopulmonary resuscitation, comprising a frame, a breathing device, a heart compression device, a displacement sensor, a flow transmitter, and a controller. The compression device comprises an arched airbag, a push rod is arranged in the middle of the airbag arch, a stepping motor is connected to the push rod for transmission, the displacement sensor is connected to the push rod displacement sensing signal, a pressure sensor is arranged on the bottom surface of the inner surface of the airbag in the middle of the airbag arch, a rubber body bottom block is arranged below the pressure sensor, and a rigid bottom plate is arranged on the top surface of the bottom block; a lace is arranged between the arch feet at both ends of the airbag; the air outlet of the breathing device is connected to the airway through a pipeline, and a flow transmitter and a flow control valve are arranged on the pipeline; the signal output ends of the displacement sensor, the pressure sensor, and the flow transmitter are respectively connected to the corresponding input end signals of the controller; and the corresponding signal output ends of the controller are respectively connected to the control input end signals of the stepping motor and the flow control valve. It has high reliability, flexible use, and wide applicability.

Description

Technical Field

[0001] The invention belongs to medical equipment technology and relates to a medical device for cardiopulmonary resuscitation. Background Art

[0002] The medical device for cardiopulmonary resuscitation of traditional technology includes two parts: a heart compression device and a breathing device. The traditional heart compression device is generally an artificial heart compression. The strength, frequency and matching relationship of the artificial heart compression during the treatment process are operated according to the corresponding international medical standards. However, the bone strength of different patients is not the same. If the compression operation force is too light, the rescue effect cannot be achieved. If it is too heavy, it may cause rib damage to the patient. Whether the artificial heart compression can meet the standard requirements is closely related to the proficiency of the corresponding skills of the medical personnel who rescue. The breathing device generally uses a commercially available ventilator, and the adjustment function of the commercially available ventilator is relatively simple. In the actual treatment process, due to the complexity and diversity of the patient's condition, it is sometimes necessary to flexibly adjust the matching relationship between the parameters of ventilation, gas volume, compression frequency, and compression force. It is obviously difficult for the medical device for cardiopulmonary resuscitation of traditional technology to meet such requirements.

[0003] Therefore, people have developed some medical devices for cardiopulmonary resuscitation with multi-parameter correlation and regulation functions.

[0004] For example: A Chinese patent with authorization announcement number CN105749395B discloses a trigger-type high-frequency jet ventilator for cardiopulmonary resuscitation, including a control unit and a jet ventilation device; the control unit is connected to a sensing unit or an artificial cardiopulmonary resuscitation machine for sensing chest fluctuations or respiratory airflow; the control unit sends a start jet command to the jet ventilation device at the end of chest compression; and sends a stop jet command at the end of chest rebound. The present invention achieves ventilation of patients under uninterrupted chest compression, greatly reduces the interval time between compressions, can accurately ventilate during the patient's chest rebound, and can effectively improve coronary artery, heart, and brain perfusion, thereby enabling patients to obtain better prognosis.

[0005] The specific technical solution of this patent includes a control unit and a jet ventilation device; the jet ventilation device is connected to an artificial airway through an air path; the control unit is connected to a sensing unit for sensing chest rise and fall or respiratory airflow or is connected to an artificial cardiopulmonary resuscitation machine; after receiving the sensing signal sent by the sensing unit or the compression signal from the artificial cardiopulmonary resuscitation machine, the control unit sends a start jet command to the jet ventilation device at the end of chest compression; sends a stop jet command at the end of chest rebound; the jet ventilation device starts jet ventilation or stops jet ventilation to the artificial airway according to the received command; the sensing unit is a positioning sensor for monitoring chest rise and fall changes; the number of positioning sensors is two, which are placed on the patient's chest and abdomen and back, respectively, or two positioning sensors are placed on the mid-axillary line on both sides of the patient; the patient's chest is sensed and judged to be in a compression state or a rebound state by the change in the distance between the positioning sensors; during the compression process, when the distance between the two positioning sensors is the smallest, it is the end of chest compression, and when the distance is the largest, it is the end of chest rebound; the sensing unit is a flow sensor for monitoring airway airflow changes during compression.

[0006] The sensing unit includes a flow sensor for monitoring changes in airway airflow during compression and a positioning sensor for monitoring changes in chest rise and fall.

[0007] The control unit receives a compression signal from the artificial cardiopulmonary resuscitation machine.

[0008] Medical devices for cardiopulmonary resuscitation using such technology can certainly be used, but they still have the following shortcomings:

[0009] Since the squeezing force is only monitored by the positioning sensor, the squeezing force value is only used to control the ventilation device to issue a start or stop jet command, and does not consider how to protect the patient's ribs from being damaged. The reliability is not high enough.

[0010] After the control unit receives the sensing signal from the sensing unit or the compression signal from the cardiopulmonary resuscitation machine, it sends a start jet command to the jet ventilation device at the end point of chest compression; and sends a stop jet command at the end point of chest rebound; the jet ventilation device starts or stops jet ventilation to the artificial airway according to the received command; it can only control the correlation between the chest rise and fall state and the jet ventilation state, and the control mode is relatively simple. However, the patient's condition is complex and diverse, and sometimes it is necessary to flexibly adjust the matching relationship between parameters such as ventilation, air volume, compression frequency, and compression strength. Obviously, such a device cannot achieve such an effect.

[0011] In summary, the existing medical devices for cardiopulmonary resuscitation are not reliable enough in protecting the patient's ribs from damage, are not flexible enough in use, are not widely applicable, and have not achieved satisfactory results. Summary of the invention

[0012] In order to overcome the deficiencies of the prior art, the present invention provides a medical device for cardiopulmonary resuscitation with higher reliability, better flexibility of use, wider applicability and more ideal use effect.

[0013] The technical solution adopted by the present invention to achieve the above technical purpose is: a medical device for cardiopulmonary resuscitation, including a frame, a breathing device, a heart compression device, a displacement sensor for detecting the deformation value of the patient's chest arranged on the heart compression device, a flow transmitter and a controller for monitoring the change of airway airflow during compression arranged on the breathing device, wherein the heart compression device includes an arched airbag adapted to the patient's chest contour, an upper splint is arranged on the outer surface of the airbag body in the middle of the arch of the airbag, a vertical push rod is arranged on the top surface of the upper splint, a stepper motor arranged on the frame is connected to the push rod through an output shaft, a displacement sensor arranged on the frame is connected to the displacement degree sensing signal of the push rod, and a displacement sensor in the arch of the airbag is connected to the displacement sensor signal of the push rod. A lower clamping plate is provided on the inner surface of the airbag body, and a pressure sensor is also provided on the bottom surface of the lower clamping plate. A bottom block of a rubber body fixedly connected to the corresponding position of the inner surface of the airbag is provided below the pressure sensor in the airbag, and a rigid bottom plate is provided on the top surface of the bottom block; straps are provided between the arch feet at both ends of the arched airbag; the breathing device includes an air tank, and the air outlet of the air tank is connected to the airway through a pipeline, and a flow transmitter and a flow control valve are provided on the pipeline; the signal output ends of the displacement sensor, the pressure sensor and the flow transmitter are respectively connected to the corresponding signal input ends of the controller; the corresponding signal output ends of the controller are respectively connected to the control input ends of the stepping motor and the flow control valve.

[0014] When the extrusion device is in a non-pressurized state, a spacing space is provided between the pressure sensor and the bottom plate; when the extrusion device is in a pressurized state, the pressure sensor and the bottom plate are pressed and connected.

[0015] When the arched airbag is in a state of being pressed by a push rod, two inner sides of the arched leg portion of the arched airbag synchronously press against two sides of the patient's armpits.

[0016] The push rod is movably connected through a guide device arranged on the frame.

[0017] The lacing belt is passed through the lower part of the patient's back and is fastened when the patient is being rescued.

[0018] The controller is a computer.

[0019] The beneficial effects of the present invention are as follows: since the cardiac compression device comprises an arched airbag 9 adapted to the chest contour of the patient, an upper splint 3 is provided on the outer surface of the airbag body in the middle of the arch of the airbag 9, a vertical push rod 2 is provided on the top surface of the upper splint 3, a stepper motor 1 arranged on a frame 10 is connected to the push rod 2 through an output shaft, a displacement sensor 11 arranged on the frame 10 is connected to the displacement sensing signal of the push rod 2, a lower splint 4 is provided on the inner surface of the airbag body in the middle of the arch of the airbag 9, a pressure sensor 8 is also provided on the bottom surface of the lower splint 4, and a fixed pressure sensor 8 corresponding to the inner surface of the airbag body is provided below the pressure sensor 8 in the airbag 9 The bottom block 7 of the rubber body is fixedly connected, and the top surface of the bottom block 7 is provided with a rigid bottom plate 5; a lace 6 is provided between the arch feet at both ends of the arch airbag 9; the breathing device includes an air tank 14, the air outlet of the air tank 14 is connected to the airway through a pipeline, and a flow transmitter 13 and a flow control valve 12 are arranged on the pipeline; the signal output ends of the displacement sensor 11, the pressure sensor 8, and the flow transmitter 13 are respectively connected to the corresponding signal input ends of the controller 15; the corresponding signal output ends of the controller 15 are respectively connected to the control input ends of the stepping motor 1 and the flow control valve 12.

[0020] Therefore, the present invention adopts two-way detection of displacement sensor 11 and pressure sensor 8, and the detection reliability is higher. The airbag 9 is used as the pressure execution device. When applying pressure, the two inner sides of the arch leg part of the arch airbag 9 face the two sides of the patient's armpits and apply pressure synchronously, which is equivalent to adding a "reinforcement rib" to the patient's ribs. It takes into account more comprehensively how to protect the patient's ribs from being damaged, and the reliability is higher. The present invention adopts a flow transmitter 13 and a flow control valve 12 arranged on the pipeline; the signal output ends of the displacement sensor 11, the pressure sensor 8, and the flow transmitter 13 are respectively connected to the corresponding signal input ends of the controller 15; the corresponding signal output ends of the controller 15 are respectively connected to the control input ends of the stepping motor 1 and the flow control valve 12, which can flexibly control the matching relationship between the parameters of ventilation, gas volume, extrusion frequency, and extrusion strength, and has better flexibility of use, wider applicability, and more ideal use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the heart compression device part of the present invention

[0023] Figure 2 It is a schematic diagram of the breathing device part of the present invention

[0024] Figure 3 It is a schematic diagram of the present invention as a whole.

[0025] The reference numerals in the accompanying drawings are described as follows: stepper motor 1, push rod 2, upper clamping plate 3, lower clamping plate 4, bottom plate 5, tie 6, bottom block 7, pressure sensor 8, air bag 9, frame 10, displacement sensor 11, flow control valve 12, flow transmitter 13, gas tank 14, controller 15 DETAILED DESCRIPTION

[0026] Embodiments of the present invention, such as Figures 1 to 3 As shown, a medical device for cardiopulmonary resuscitation includes a frame 10, a breathing device, a heart compression device, a displacement sensor 11 arranged on the heart compression device and capable of detecting the deformation value of the chest of a patient, a flow transmitter 13 arranged on the breathing device and used for monitoring the change of airway airflow during compression, and a controller 15. The heart compression device includes an arched airbag 9 adapted to the chest contour of the patient, an upper clamping plate 3 is arranged on the outer surface of the airbag body in the middle of the arch of the airbag 9, a vertical push rod 2 is arranged on the top surface of the upper clamping plate 3, a stepping motor 1 arranged on the frame 10 is connected to the push rod 2 through an output shaft, the displacement sensor 11 arranged on the frame 10 is connected to the displacement degree sensing signal of the push rod 2, and a lower clamping plate 4 is arranged on the inner surface of the airbag body in the middle of the arch of the airbag 9 A pressure sensor 8 is also provided on the bottom surface of the lower clamping plate 4. A rubber bottom block 7 fixedly connected to the corresponding position of the inner surface of the airbag 9 is provided below the pressure sensor 8 in the airbag 9, and a rigid bottom plate 5 is provided on the top surface of the bottom block 7; a lace 6 is provided between the arch feet at both ends of the arched airbag 9; the breathing device includes an air tank 14, the air outlet of the air tank 14 is connected to the airway through a pipeline, and a flow transmitter 13 and a flow control valve 12 are provided on the pipeline; the signal output ends of the displacement sensor 11, the pressure sensor 8 and the flow transmitter 13 are respectively connected to the corresponding signal input ends of the controller 15; the corresponding signal output ends of the controller 15 are respectively connected to the control input ends of the stepping motor 1 and the flow control valve 12.

[0027] When the extrusion device is in a non-pressurized state, a spacing space is provided between the pressure sensor 8 and the bottom plate 5 ; when the extrusion device is in a pressurized state, the pressure sensor 8 and the bottom plate 5 are pressed and connected.

[0028] When the arched airbag 9 is in the state of being pressed by the push rod 2, the two inner sides of the arched leg portion of the arched airbag 9 synchronously pressurize the two sides of the patient's armpit.

[0029] The push rod 2 is movably connected through a guide device arranged on the frame 10 .

[0030] The lacing belt 6 is passed through the lower back of the patient and is fastened when rescuing the patient.

[0031] The controller 15 is a computer.

[0032] Further explanation of the present invention: The control strategy of the controller can be tested with a prototype before manufacturing the product. A plurality of gears can be pre-set according to corresponding medical standards and the pressure applied by experienced doctors to different types of patients. The size of the arch airbag 9 can also be set in series. The matching relationship between the parameters such as ventilation, air volume, squeezing frequency and squeezing force can be pre-set for different types of patients according to medical experience to suit different patients.

Claims

1. A medical device for cardiopulmonary resuscitation, comprising a frame, a breathing device, a heart compression device, a displacement sensor for detecting the chest deformation value of a patient provided on the heart compression device, a flow transmitter for monitoring the change of airway airflow during compression provided on the breathing device, and a controller, characterized in that: The cardiac compression device comprises an arched airbag adapted to the chest contour of the patient, an upper clamp is provided on the outer surface of the airbag body in the middle of the arch of the airbag, a vertical push rod is provided on the top surface of the upper clamp, a stepper motor arranged on the frame is connected to the push rod through an output shaft, a displacement sensor arranged on the frame is connected to the displacement sensing signal of the push rod, a lower clamp is provided on the inner surface of the airbag body in the middle of the arch of the airbag, a pressure sensor is also provided on the bottom surface of the lower clamp, a rubber body bottom block fixedly connected to the corresponding position of the inner surface of the airbag body is provided below the pressure sensor in the airbag, and a rigid bottom plate is provided on the top surface of the bottom block; straps are provided between the arch feet at both ends of the arched airbag; the breathing device comprises an air tank, the air outlet of the air tank is connected to the airway through a pipeline, and a flow transmitter and a flow control valve are provided on the pipeline; the signal output ends of the displacement sensor, the pressure sensor and the flow transmitter are respectively connected to the corresponding signal input ends of the controller; the corresponding signal output ends of the controller are respectively connected to the control input ends of the stepper motor and the flow control valve.

2. A medical device for cardiopulmonary resuscitation according to claim 1, characterized in that: When the extrusion device is in a non-pressurized state, a spacing space is provided between the pressure sensor and the bottom plate; when the extrusion device is in a pressurized state, the pressure sensor and the bottom plate are pressed and connected.

3. A medical device for cardiopulmonary resuscitation according to claim 2, characterized in that: When the arched airbag is in a state of being pressed by a push rod, two inner sides of the arched leg portion of the arched airbag synchronously press against two sides of the patient's armpits.

4. A medical device for cardiopulmonary resuscitation according to claim 3, characterized in that: The push rod is movably connected through a guide device arranged on the frame.

5. A medical device for cardiopulmonary resuscitation according to claim 4, characterized in that: The lacing belt is passed through the lower part of the patient's back and is fastened when the patient is being rescued.

6. A medical device for cardiopulmonary resuscitation according to claim 5, characterized in that: The controller is a computer.

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