Auxiliary treatment device for cardiac severe illness and operation method of auxiliary treatment device

Abstract

The invention discloses an auxiliary treatment device for cardiac severe illness, and the device comprises a pressing plate which achieves the vertical reciprocating motion through a pressing linkage mechanism; the linkage cylinder comprises an expiration cylinder and an oxygen inhalation cylinder which are respectively connected with the air bag and the reversing valve through air pipes; the reversing valve is used for conducting the exhaust channels a1-a2 when the reversing valve is pressed to move downwards and conducting the oxygen supply channels b1-b2 when the reversing valve is pressed to move upwards; the oxygen linkage mechanism synchronously and intermittently moves with the pressing linkage mechanism through gear meshing to drive the air bag to be compressed to supply oxygen; the oxygen mask is communicated with the reversing valve through an air pipe to form a breathing passage. Through cooperative work of the reversing valve and the oxygen linkage mechanism, efficient and accurate cardiac compression and oxygen supply functions are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an auxiliary treatment device for critical heart disease and an operating method thereof. Background Art

[0002] Existing cardiac resuscitation equipment has certain limitations in compression depth, frequency and oxygen supply function. Traditional equipment usually has a single function, cannot achieve efficient coordinated operation of compression and oxygen supply, and has deficiencies in accurately adjusting the compression force and oxygen supply flow rate. For example, the technical solutions disclosed in CN213431592U-A negative pressure device for cardiac resuscitation for critical care and CN222488075U-A negative pressure device for auxiliary treatment of critical heart disease can only achieve a single compression function. The present invention aims to solve these problems and provide an integrated and intelligent critical heart auxiliary treatment device to improve the efficiency and effectiveness of cardiac resuscitation. Summary of the invention

[0003] The purpose of the present invention is to provide an auxiliary treatment device for critically ill heart patients, which is used to provide effective compression and oxygen supply functions for cardiac resuscitation. The present invention aims to improve the standardized efficiency of cardiac compression while providing a stable oxygen supply function, so as to improve the survival rate and recovery effect of cardiac arrest patients.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: A cardiac critical care auxiliary treatment device, comprising: a pressing plate, which realizes vertical reciprocating motion through a pressing linkage mechanism;

[0005] The linkage cylinder includes an exhalation cylinder and an oxygen inhalation cylinder, which are respectively connected to the air bag and the reversing valve through the trachea; the reversing valve is used to open the exhaust channel a1-a2 when pressing downward, and to open the oxygen supply channel b1-b2 when pressing upward;

[0006] The oxygen linkage mechanism drives the airbag to compress and supply oxygen through gear meshing and synchronous intermittent movement with the pressing linkage mechanism;

[0007] The oxygen mask is connected to the reversing valve through the trachea to form a breathing passage.

[0008] Preferably, the pressing linkage mechanism includes a crank slider mechanism composed of a power output wheel, a planetary wheel, and a sliding bar, which converts the rotational motion into a vertical pressing motion of 100-120 times / minute, and the stroke accuracy is controlled within ±2mm.

[0009] The linkage cylinder is provided with a first one-way valve, a second one-way valve and a third one-way valve; the first one-way valve controls the oxygen input; the second one-way valve controls the exhaust gas discharge; the third one-way valve is connected to the airbag to form a two-way air circuit control system; the exhalation cylinder generates -15 to -20 cmH 2 O negative pressure, the oxygen cylinder outputs 30-50kPa positive pressure.

[0010] Preferably, the reversing valve comprises a rotatable sealing shaft, and its connecting channel connects the exhaust port a1-a2 and the oxygen port b1-b2 alternately through rotation, and the switching response time is <50ms.

[0011] Preferably, the oxygen linkage mechanism includes a linkage gear driving a first intermittent gear and a second intermittent gear to alternately mesh with a rack, and the reciprocating extrusion motion of the airbag pressure plate is achieved through a push-pull rod and a connecting rod mechanism.

[0012] Preferably, the pressing plate is integrated with a pressure sensor and a stroke sensor, and data is fed back to a PID control system to dynamically adjust the pressing depth to maintain the pressing resistance within a range of 5-10N.

[0013] Preferably, each component is integrated into an adjustable housing, and a 5-15cm distance adjustment is achieved through an electric slide rail. The slide rail is equipped with an overload protection mechanism, and automatically retracts when the abnormal resistance exceeds 20N.

[0014] Preferably, the airbag pressure plate adopts a progressive extrusion structure, with an initial stroke output of 15 L / min oxygen flow, a maximum stroke output of 30 L / min oxygen flow, and an adjustable range of oxygen supply concentration of 30-100%.

[0015] Preferably, the reversing valve is integrated with a 0.2 μm air filter, and the exhalation circuit is equipped with a UV-C ultraviolet sterilization module with a radiation intensity of ≥80 μW / cm 2 , it starts automatically during work breaks.

[0016] Preferably, a buffer cylinder is arranged above the pressing plate, a buffer spring is installed inside the buffer cylinder, and the upper end of the buffer spring is fixedly connected to the buffer piston; the interior of the buffer spring is filled with magnetorheological fluid; an electromagnetic generator is installed on the outer side of the inner wall of the buffer cylinder;

[0017] The invention also discloses an operating method of the device, comprising:

[0018] S1. The operator adjusts the position of the shell through the electric slide rail to make the compression plate accurately fit the lower 1 / 3 of the patient's sternum. The pressure sensor and the stroke sensor monitor the initial contact pressure in real time, with a target value of 5-10. The baseline parameters are established and the compression depth reference value is set according to the patient's body shape, 5-6cm for adults and 4-5cm for children.

[0019] S2, compression-exhalation coordination stage: When the power component drives the power output wheel to rotate, the gear transmission system drives the first driven wheel, and through the meshing of the planetary wheel and the fixed wheel, the rotational motion is converted into the vertical reciprocating motion of the sliding bar, and the lower moving rod pushes the compression plate to perform standard CPR compressions at a frequency of 100-120 times / minute;

[0020] S3, Synchronous mechanical action: The piston of the linkage cylinder moves downward to make the rodless chamber produce -15~-20cmH 2 O negative pressure; the reversing valve switches to the exhalation mode through the sealing shaft: the connecting channel conducts the first exhaust interface a1 and the second exhaust interface a2, disconnects the oxygen passage b1-b2, and the exhaust gas in the mask is sucked by the negative pressure of the linkage cylinder and discharged through the second one-way valve;

[0021] S4, reset-oxygen inhalation coordination stage: When the compression linkage mechanism returns to reset: the sliding bar drives the moving rod to rise, the compression plate is separated from the chest cavity, and the patient's chest rebounds naturally;

[0022] S5, key linkage process: the linkage gear in the oxygen linkage mechanism drives the first / second intermittent gear to operate alternately; when the first sector tooth pushes the rack forward, the push-pull rod compresses the airbag pressure plate through the connecting rod mechanism; the pre-stored oxygen in the airbag enters the oxygen inhalation cylinder through the third one-way valve;

[0023] S6, the reversing valve switches to oxygen inhalation mode: the sealing shaft rotates to connect the connecting channel to the b1-b2 interface; the a1-a2 exhaust channel is disconnected; the cylinder piston is linked to move upward to compress the rodless chamber, and oxygen is delivered to the mask at a pressure of 30-50kPa.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the coordinated work of the reversing valve and the oxygen linkage mechanism realizes efficient and accurate cardiac compression and oxygen supply functions. The device has high integration, simple operation, strong adjustability, is suitable for adult and child cardiac resuscitation, and has important clinical application value.

[0025] The present invention organically combines a planetary gear-sliding bar pressing mechanism, a double-acting linkage cylinder and a rotary reversing valve: the asymmetric motion trajectory generated by the meshing of the planetary gear and the fixed wheel is coupled with the vertical motion of the sliding bar to achieve pressing and assisting breathing at the same time.

[0026] The exhalation / oxygen inhalation dual chambers of the linkage cylinder and the rotation switching of the reversing valve form a timing closed loop, making the compression-breathing phase difference seamlessly connected;

[0027] The mechanical kinetic energy of the pressing linkage is transmitted in three directions:

[0028] Main path: drives the compression board to perform standard chest compression;

[0029] The first secondary path: driving the oxygen mechanism through the linkage gear to generate pulsating oxygen flow;

[0030] The second secondary path: the pressure conversion of the linkage cylinder is triggered by the lower moving rod; this energy distribution method enables a single power source to simultaneously realize the three functions of mechanical compression, negative pressure suction, and positive pressure oxygen supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the auxiliary treatment device of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the pressing linkage mechanism of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the linkage cylinder of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the reversing valve of the present invention;

[0035] Figure 5 Another structural schematic diagram of the reversing valve of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the oxygen linkage mechanism of the present invention;

[0037] Figure 7 This is a usage state diagram of the first auxiliary treatment device of the present invention;

[0038] Figure 8 This is a usage state diagram of the second auxiliary treatment device of the present invention;

[0039] Fig. 9 This is a usage state diagram of the third auxiliary treatment device of the present invention;

[0040] Fig.10 This is a usage state diagram of the fourth auxiliary treatment device of the present invention;

[0041] Fig.11 This is a usage state diagram of the fifth auxiliary treatment device of the present invention;

[0042] Fig.12 It is a specific schematic diagram of the pressing plate of the present invention.

[0043] In the figure: pressing plate 1, pressing linkage mechanism 2, linkage cylinder 3, reversing valve 4, oxygen linkage mechanism 5, air bag 6, oxygen mask 7, electric slide rail 8;

[0044] Buffer cylinder 11, buffer piston 12, buffer spring 13, pressure sensor 14, electromagnetic generator 15, magnetorheological fluid 16;

[0045] Power output wheel 21, first driven wheel 22, fixed wheel 23, planetary wheel 24, sliding bar 25, sliding block 26, upper moving rod 27, lower moving rod 28;

[0046] Exhalation cylinder 31, oxygen inhalation cylinder 32, first one-way valve 33, second one-way valve 34, third one-way valve 35; reversing valve 4, valve body 41, sealing shaft 42, connecting channel 43, driving motor 44, first exhaust interface a1, second exhaust interface a2, first oxygen interface b1, second oxygen interface b2;

[0047] The linkage gear 51 , the first intermittent gear 52 , the first sector gear 53 , the rack 54 , the second intermittent gear 55 , the second sector gear 56 , the push-pull rod 57 , the connecting rod mechanism 58 , and the airbag pressure plate 59 . DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] This embodiment is a solution to the following problem: the existing critical care auxiliary treatment device has a single function and can only perform chest compression. In view of this, the critical care auxiliary treatment device of this embodiment can provide oxygen and assist breathing for the user while performing chest compression.

[0050] like Figure 1 As shown, the auxiliary treatment device for critical heart disease of this embodiment includes a pressing plate 1 for placing on the chest of a user, a pressing linkage mechanism 2 for driving the pressing plate 1 to move up and down, at least one air bag 6 for storing oxygen, an oxygen linkage mechanism 5 for intermittently pressing the air bag 6 and intermittently moving synchronously with the pressing linkage mechanism 2, a linkage cylinder 3 for transporting the oxygen in the air bag 6 to a breathing mask 7 and forming a negative pressure inside to assist the user in exhaling, a reversing valve 4 for switching the air path according to different requirements during use (oxygen supply, intake, exhalation); and at least one oxygen mask 7 placed in the mouth of the user.

[0051] The pressing plate 1 is installed at the lower end of the moving rod of the pressing linkage mechanism 2, and a linkage cylinder 3 is installed at the upper end of the moving rod of the pressing linkage mechanism 2. The pressing linkage mechanism 2 and the oxygen linkage mechanism 5 are driven by gear meshing. The outer side of the oxygen linkage mechanism 5 is in contact with the airbag 6. The linkage cylinder 3 is connected to the linkage cylinder 3 through a trachea, the linkage cylinder 3 is connected to the reversing valve 4 through a trachea, and the reversing valve 4 is connected to the oxygen mask 7 through a trachea.

[0052] like Figure 1As shown, in some embodiments, a pressure sensor is provided on the lower surface of the pressing plate 1 for feeding back the pressure value of the pressing plate 1 on the user's chest, and a stroke sensor is provided on the side of the pressing plate 1 for feeding back the stroke value of the pressing plate 1.

[0053] like Figure 1 As shown, in some embodiments, the pressing plate 1, the pressing linkage mechanism 2, the linkage cylinder 3, the reversing valve 4, the oxygen linkage mechanism 5, and the airbag 6 are all installed in a shell, and the shell is connected to the electric slide rail 8 through the side; the electric slide rail 8 is an existing conventional technology and will not be described in detail. The electric slide rail 8 is used to adjust the distance between the auxiliary treatment device and the user.

[0054] like Figure 1-2 As shown, the pressing linkage mechanism 2 includes a crank slider mechanism consisting of a power output wheel 21, a planetary wheel 24, and a sliding bar 25, which converts the rotational motion into a vertical pressing motion of 100-120 times / minute, and the stroke accuracy is controlled at ±2mm.

[0055] In this embodiment, the pressing linkage mechanism 2 includes a power output wheel 21, a first driven wheel 22, a fixed wheel 23, a planetary wheel 24, a sliding bar 25, a sliding block 26, an upper moving rod 27, and a lower moving rod 28; the power output wheel 21 is connected to the power component through a rotating shaft, and is connected to the outer side of the first driven wheel 22 through gear meshing. A fixed wheel 23 is fixedly installed above the first driven wheel 22 and coaxially. A fixed protrusion is also provided on the first driven wheel 22, and a rotatable planetary wheel 24 is installed at the fixed protrusion. The planetary wheel 24 and the fixed protrusion are connected to the power component through a rotating shaft, and the fixed wheel 23 is fixedly installed above the first driven wheel 22 and coaxially. The outer side of the fixed wheel 23 is meshed by gears, and an eccentric shaft is fixedly installed above the planetary gear 24. The eccentric shaft is connected to a sliding block 26, and the sliding block 26 is clamped in the slot of the sliding bar 25. An upper moving rod 27 and a lower moving rod 28 are fixedly installed on the upper and lower sides of the central axis of the sliding bar 25; the lower moving rod 28 passes through the limit slider seat and is fixedly connected to the pressing plate 1; the lower moving rod 28 passes through the limit slider seat and is connected to the linkage cylinder 3; the rotating shaft of the power output wheel 21, the first driven wheel 22 and the limit slider seat are fixedly connected to the mechanism housing.

[0056] The pressing linkage mechanism 2 can press the user by moving the pressing plate 1 downward, and at the same time supply oxygen and assist breathing to the user by linkage with the linkage cylinder 3. Specifically, when the pressing plate 1 moves downward, the user's chest is pressed, and the user is in the state of exhalation at this time. The piston inside the linkage cylinder 3 moves downward at the same time as the pressing plate 1, and the rodless cavity of the linkage cylinder 3 is in a negative pressure state. At this time, the reversing valve 4 connects the oxygen mask 7 and the rodless cavity of the linkage cylinder 3, and the negative pressure state of the linkage cylinder 3 can assist the user in exhaling; similarly, when the pressing linkage mechanism 2 is reset and moves upward, the user's chest cavity expands and the breathing state is inhalation. At this time, the rodless cavity space of the linkage cylinder 3 is compressed, and oxygen is pressed into the oxygen mask 7.

[0057] like Figure 3 As shown, the linkage cylinder 3 is provided with a first one-way valve 33 to control oxygen input, a second one-way valve 34 to control exhaust gas discharge, and a third one-way valve 35 to connect the airbag 6. The exhalation cylinder 31 generates -15 to -20 cmH 2 O negative pressure, the oxygen cylinder 32 outputs 30-50kPa positive pressure.

[0058] The linkage cylinder 3 includes an exhalation cylinder 31, an oxygen inhalation cylinder 32, a first one-way valve 33, a second one-way valve 34, and a third one-way valve 35; the exhalation cylinder 31 and the oxygen inhalation cylinder 32 are linked at the same time, and the exhalation cylinder 31 is equipped with a first one-way valve 33 and a second one-way valve 34; the first one-way valve 33 is used to connect to the interface of the reversing valve 4 through the trachea, and the second one-way valve 34 is used to discharge the gas in the exhalation cylinder 31, the first one-way valve 33 can only allow the gas to enter the exhalation cylinder 31, and the second one-way valve 34 can only allow the gas to be discharged from the exhalation cylinder 31; the exhalation cylinder 31 is equipped with a third one-way valve 35, and the third one-way valve 35 is connected to the interface of the reversing valve 4 through the trachea; the exhalation cylinder 31 is connected to the airbag 6 through the trachea through an interface opened on the side;

[0059] like Figure 4-5 As shown, the reversing valve 4 comprises a rotatable sealing shaft 42, and its connecting channel 43 connects the exhaust interface a1-a2 and the oxygen interface b1-b2 alternately through rotation, and the switching response time is <50ms.

[0060] In this embodiment, the reversing valve 4 includes a valve body 41, a sealing shaft 42, a connecting channel 43, a first exhaust interface a1, a second exhaust interface a2, a first oxygen interface b1, and a second oxygen interface b2; a sealing shaft 42 is provided inside the valve body 41, the central axis of the sealing shaft 42 is connected to the driving motor, and the sealing shaft 42 is provided with a connecting channel 43; the connecting channel 43 is connected to the first exhaust interface a1 and the second exhaust interface a2 as the sealing shaft 42 rotates, and the first oxygen interface b1 and the second oxygen interface b2 are disconnected; the connecting channel 43 is connected to the first oxygen interface b1 and the second oxygen interface b2 as the sealing shaft 42 rotates, and the first exhaust interface a1 and the second exhaust interface a2 are disconnected. The first exhaust interface a1 and the first oxygen interface b1 are connected through a trachea and a linkage cylinder 3 respectively; the second exhaust interface a2 and the second oxygen interface b2 are connected through a trachea and an oxygen mask 7 respectively.

[0061] The reversing valve 4 is used to switch the exhalation and oxygen inhalation pipelines when the auxiliary treatment device is used; specifically, in the present embodiment, when the pressing linkage mechanism 2 is downward, the sealing shaft 42 of the reversing valve 4 rotates to connect the first exhaust interface a1 and the second exhaust interface a2, and disconnect the first oxygen interface b1 and the second oxygen interface b2; the exhalation cylinder 31 and the oxygen inhalation cylinder 32 have rod-free cavities, and their volumes increase to form negative pressure. The exhalation cylinder 31 draws out the gas in the mask through the trachea to help the user exhale, and the oxygen inhalation cylinder 32 inhales the oxygen in the airbag 6 at this time.

[0062] When the linkage mechanism 2 is pressed upward, the reversing valve 4 rotates the connecting channel 43 along with the sealing shaft 42 to connect the first oxygen interface b1 and the second oxygen interface b2; and the first exhaust interface a1 and the second exhaust interface a2 are disconnected; the linkage cylinder 3 has a rodless cavity and its volume becomes smaller, the gas in the exhalation cylinder 31 is discharged, and the oxygen in the oxygen in the oxygen cylinder 32 is pressed into the mask 7 to help the user inhale oxygen.

[0063] As shown in Figure 6; the oxygen linkage mechanism 5 includes a linkage gear 51 driving a first intermittent gear 52 and a second intermittent gear 55 to alternately mesh with a rack 54, and a push-pull rod 57 and a connecting rod mechanism 58 to achieve reciprocating extrusion motion of the airbag pressure plate 59.

[0064] In this embodiment, the oxygen linkage mechanism 5 includes a linkage gear 51, a first intermittent gear 52, a first sector tooth 53, a rack 54, a second intermittent gear 55, a second sector tooth 56, a push-pull rod 57, a connecting rod mechanism 58, and an airbag pressure plate 59; the linkage gear 51 is meshed with the first driven wheel 22 of the pressing linkage mechanism 2, and the upper and lower symmetrical sides of the linkage gear 51 are respectively meshed with the first intermittent gear 52 and the second intermittent gear 55, and the first sector tooth 53 is fixedly installed on the rotating shaft of the first intermittent gear 52, and the second intermittent gear 55 is fixedly installed on the rotating shaft of the first intermittent gear 52. A second sector tooth 56 is fixedly mounted on the rotating shaft; the first sector tooth 53 and the second sector tooth 56 are symmetrically mounted on the upper and lower sides of the rack 54, and the first sector tooth 53, the second sector tooth 56 and the rack 54 are not engaged at the same time, that is, when the first sector tooth 53 and the rack 54 are engaged, the second sector tooth 56 is not engaged with the rack 54; a push-pull rod 57 is fixedly mounted on the front end of the rack 54, and the front end of the push-pull rod 57 is connected to a connecting rod mechanism 58, and an airbag pressure plate 59 is arranged at the front end of the connecting rod mechanism 58; an airbag 6 is installed between the airbag pressure plates 59.

[0065] When the first driven wheel 22 of the pressing linkage mechanism 2 rotates, the meshing linkage gear 51 rotates accordingly. Since the linkage gear 51 is symmetrically connected to the first intermittent gear 52 and the second intermittent gear 55 on both sides, the rotation of the linkage gear 51 drives the first intermittent gear 52 and the second intermittent gear 55 to rotate alternately.

[0066] When the first intermittent gear 52 rotates, the first sector tooth 53 fixedly mounted on the rotating shaft rotates accordingly. At this time, the first sector tooth 53 meshes with the rack 54, and as the first sector tooth 53 rotates, the rack 54 is pushed forward. In this process, the second sector tooth 56 is separated from the rack 54 and will not affect the movement of the rack 54.

[0067] When the first intermittent gear 52 stops running and the second intermittent gear 55 starts running, the second sector tooth 56 rotates accordingly and meshes with the rack 54. Since the rotation direction of the second sector tooth 56 is opposite to the meshing direction of the first sector tooth 53, it will pull the rack meshing 54 backward, so that the rack meshing 54 returns to near the initial position.

[0068] The push-pull rod 57 fixedly mounted at the front end of the rack 54 moves synchronously with the forward and backward movement of the rack 54. The front end of the push-pull rod 57 is connected to the connecting rod mechanism 58, and the forward and backward movement of the push-pull rod 57 is converted into a specific movement of the airbag pressure plate 59 through the conversion of the connecting rod mechanism 58.

[0069] When the push-pull rod 57 is pushed forward, the connecting rod mechanism 58 drives the airbag pressing plate 59 to move toward the direction close to the airbag 6, squeezing the airbag 6 so that the gas in the airbag 6 is squeezed out.

[0070] When the push-pull rod 57 moves backward, the airbag pressing plate 59 is driven by the connecting rod mechanism 58 to move away from the airbag 6, and the airbag 6 can be replenished with gas or restored to the initial state to prepare for the next squeezing. This cycle is repeated to achieve regular squeezing and releasing operations on the airbag 6 to meet the requirements of the entire system for oxygen-related functions.

[0071] like Figure 1-11 As shown, the present invention uses the process:

[0072] S1. The operator adjusts the position of the shell through the electric slide rail so that the compression plate 1 is precisely fitted to the lower 1 / 3 of the patient's sternum. The pressure sensor and the stroke sensor monitor the initial contact pressure in real time (target value 5-10N), establish baseline parameters and set the compression depth reference value according to the patient's body shape (5-6cm for adults and 4-5cm for children);

[0073] S2, compression-exhalation coordination stage; when the power component (motor not shown) drives the power output wheel 21 to rotate, the gear transmission system drives the first driven wheel 22, and through the engagement of the planetary wheel 24 and the fixed wheel 23, the rotational motion is converted into the vertical reciprocating motion of the sliding bar 25, and the lower moving rod 28 pushes the pressing plate 1 to perform standard CPR compressions at a frequency of 100-120 times / minute;

[0074] S3, Synchronous mechanical action: The piston of the linkage cylinder 3 moves downward to make the rodless chamber produce -15~-20cmH 2 O negative pressure; the reversing valve 4 is switched to the exhalation mode through the sealing shaft 42: the connecting channel 43 conducts the first exhaust interface a1 and the second exhaust interface a2, disconnects the oxygen passage b1-b2, and the exhaust gas in the mask 7 is sucked by the negative pressure of the linkage cylinder 3 and discharged through the second one-way valve 34;

[0075] S4, reset-oxygen inhalation coordination stage: when the pressing linkage mechanism 2 returns to reset, the sliding bar 25 drives the moving rod 28 to rise, the pressing plate 1 is separated from the chest cavity, and the patient's chest rebounds naturally;

[0076] S5, key linkage process: the linkage gear 51 in the oxygen linkage mechanism 5 drives the first / second intermittent gears 52 / 55 to operate alternately; when the first sector tooth 53 pushes the rack 54 forward, the push-pull rod 57 compresses the airbag pressure plate 59 through the connecting rod mechanism 58; the pre-stored oxygen in the airbag 6 enters the oxygen inhalation cylinder 32 through the third one-way valve 35;

[0077] S6, the reversing valve 4 switches to the oxygen inhalation mode: the sealing shaft 42 rotates 90 degrees to make the connecting channel 43 connect to the b1-b2 interface; the a1-a2 exhaust channel is disconnected; the piston of the linkage cylinder 3 moves upward to compress the rodless chamber, and the oxygen is delivered to the mask 7 at a pressure of 30-50kPa.

[0078] It should be noted that if Figure 1 ,12 As shown, in this embodiment, a buffer cylinder 11 is arranged above the pressing plate 1, and a buffer spring 13 is installed inside the buffer cylinder 11, and the upper end of the buffer spring 13 is fixedly connected to the buffer piston 12; the interior of the buffer spring 13 is filled with magnetorheological fluid 16; an electromagnetic generator 15 is installed on the outer side of the inner wall of the buffer cylinder 11; the electromagnetic generator 15 is used to apply an external magnetic field to the magnetorheological fluid 16 inside the buffer spring 13, and the magnetic particles of the magnetorheological fluid 16 are magnetized and arranged into chain-like or columnar structures along the direction of the magnetic field. These structures hinder the flow of the fluid, causing a sharp increase in viscosity, and even presenting solid-like characteristics, thereby increasing the elastic modulus of the buffer spring 13.

[0079] The pressing plate 1 has pressure adaptation: the pressure sensor 14 provides real-time feedback data. When abnormal pressing resistance is detected, the power output wheel speed is adjusted through the PID algorithm to ensure that the pressing depth error is <±2mm. The feedback data of the pressure sensor 14 can change the spring strength through the magnetic field change of the electromagnetic generator 15, thereby realizing a multi-modal buffer structure. Traditional mechanical buffer layer: the buffer piston 12 and the cylinder body are supported by a chromium-nickel alloy buffer spring 13 to achieve basic elastic support (stiffness coefficient K=1200N / m); intelligent adjustment layer: the buffer spring 13 is filled with carbonyl iron powder-based magnetorheological fluid (particle size 3-5μm, volume fraction 35%), and 32 groups of electromagnetic coil arrays are distributed in an annular manner on the outer wall of the cylinder to form an electromagnetic generator 15, which can generate a 0-1.2T axial gradient magnetic field.

[0080] In addition, in some specific embodiments of the present invention:

[0081] The airbag pressure plate 59 adopts a progressive extrusion design, and the initial extrusion stroke generates a basic oxygen flow of 15L / min, and the subsequent stroke can be increased to 30L / min to meet peak demand, thereby achieving oxygen flow control;

[0082] The gear ratio design (1:1.25) ensures that the compression-oxygen supply phase difference is less than 50ms, strictly following the CPR breathing ratio standard of 30:2, thereby achieving timing calibration.

[0083] In addition, the electric slide rail 8 is equipped with overload protection, and automatically withdraws 5cm when abnormal resistance is detected; the reversing valve 4 has a built-in self-cleaning structure, and the air path is purified through a 0.2μm filter membrane each time it is switched, and the UV-C ultraviolet module irradiates and sterilizes the exhalation circuit during the interval (radiation intensity ≥80μW / cm 2 ).

[0084] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cardiac critical care auxiliary treatment device, characterized in that: include: A pressing plate (1) is arranged at the chest position of a user and is installed at the lower end of a pressing linkage mechanism (2), and realizes vertical reciprocating motion through the pressing linkage mechanism (2); A pressing linkage mechanism (2), connected to the pressing plate (1), and used to drive the pressing plate to perform vertical pressing movement at a frequency of 100-120 times / minute; The linkage cylinder (3) is installed at the upper end of the pressing linkage mechanism (2), and comprises an exhalation cylinder (31) and an oxygen inhalation cylinder (32), which are respectively connected to the reversing valve (4) and the air bag (6) through the trachea; The reversing valve (4) opens the exhaust passage (a1-a2) when pressed downward, and opens the oxygen supply passage (b1-b2) when pressed upward; The oxygen linkage mechanism (5) is connected to the pressing linkage mechanism (2) through gear meshing to synchronize intermittent motion, thereby driving the air bag (6) to compress and supply oxygen; The oxygen mask (7) is connected to the reversing valve (4) through the trachea to form a breathing passage.

2. The device according to claim 1, characterized in that: The pressing linkage mechanism (2) comprises a crank slider mechanism consisting of a power output wheel (21), a planetary wheel (24) and a sliding bar (25), which converts the rotational motion into a vertical pressing motion of 100-120 times / minute.

3. The device according to claim 1, characterized in that: The linkage cylinder (3) is provided with a first one-way valve (33), a second one-way valve (34), and a third one-way valve (35); the first one-way valve (33) controls oxygen input; the second one-way valve (34) controls exhaust gas discharge; the third one-way valve (35) is connected to the air bag (6); and a two-way air circuit control system is formed.

4. The device according to claim 1, characterized in that: The reversing valve (4) comprises a rotatable sealed shaft (42), and its connecting channel (43) connects the exhaust port (a1-a2) and the oxygen port (b1-b2) alternately through rotation, and the switching response time is less than 50 ms.

5. The device according to claim 1, characterized in that: The oxygen linkage mechanism (5) comprises a linkage gear (51) driving a first intermittent gear (52) and a second intermittent gear (55) to alternately mesh with a rack (54), and realizes the reciprocating squeezing motion of the airbag pressure plate (59) through a push-pull rod (57) and a connecting rod mechanism (58).

6. The device according to claim 1, characterized in that: The pressing plate (1) is integrated with a pressure sensor and a stroke sensor, and data is fed back to a PID control system to dynamically adjust the pressing depth and maintain the pressing resistance within a range of 5-10N.

7. The device according to claim 1, characterized in that: The components of the device are integrated in the shell, and the distance adjustment of 5-15 cm from the shell is achieved through an electric slide rail (8). The slide rail is equipped with an overload protection mechanism, and automatically retracts when the abnormal resistance exceeds 20N.

8. The device according to claim 1, characterized in that: A buffer cylinder (11) is arranged above the pressing plate (1), a buffer spring (13) is installed inside the buffer cylinder (11), and the upper end of the buffer spring (13) is fixedly connected to the buffer piston (12); the interior of the buffer spring (13) is filled with magnetorheological fluid (16); and an electromagnetic generator (15) is installed on the outer side of the inner wall of the buffer cylinder (11).

9. The device according to claim 1, characterized in that: The reversing valve (4) is integrated with a 0.2 μm air filter, and the exhalation circuit is equipped with a UV-C ultraviolet sterilization module with a radiation intensity of ≥80 μW / cm 2 , it starts automatically during work breaks.

10. The method for operating the device according to any one of claims 1 to 9, characterized in that include: S1. The operator adjusts the position of the shell through the electric slide rail to make the compression plate 1 accurately fit the lower 1 / 3 of the patient's sternum. The pressure sensor and the stroke sensor monitor the initial contact pressure in real time, with a target value of 5-10. The baseline parameters are established and the compression depth reference value is set according to the patient's body shape, 5-6cm for adults and 4-5cm for children. S2, compression-exhalation coordination stage; when the power component drives the power output wheel 21 to rotate, the gear transmission system drives the first driven wheel 22, and through the engagement of the planetary wheel 24 and the fixed wheel 23, the rotational motion is converted into the vertical reciprocating motion of the sliding bar 25, and the lower moving rod 28 pushes the pressing plate 1 to perform standard CPR compressions at a frequency of 100-120 times / minute; S3, synchronous mechanical action: the piston of the linkage cylinder 3 moves downward to generate a negative pressure of -15 to -20 cmH2O in the rodless chamber; the reversing valve 4 switches to the exhalation mode through the sealing shaft 42: the connecting channel 43 conducts the first exhaust interface a1 and the second exhaust interface a2, disconnects the oxygen passage b1-b2, and the exhaust gas in the mask 7 is sucked by the negative pressure of the linkage cylinder 3 and discharged through the second one-way valve 34; S4, reset-oxygen inhalation coordination stage: when the pressing linkage mechanism 2 returns to reset, the sliding bar 25 drives the moving rod 28 to rise, the pressing plate 1 is separated from the chest cavity, and the patient's chest rebounds naturally; S5, key linkage process: the linkage gear 51 in the oxygen linkage mechanism 5 drives the first / second intermittent gears 52 / 55 to operate alternately; when the first sector tooth 53 pushes the rack 54 forward, the push-pull rod 57 compresses the airbag pressure plate 59 through the connecting rod mechanism 58; the pre-stored oxygen in the airbag 6 enters the oxygen inhalation cylinder 32 through the third one-way valve 35; S6, the reversing valve 4 is switched to the oxygen absorption mode: the sealing shaft 42 rotates to connect the connection channel 43 to the b1-b2 interface and disconnect the a1-a2 exhaust channel; The piston of the linkage cylinder 3 moves upward to compress the rodless chamber, and delivers oxygen to the mask 7 at a pressure of 30-50 kPa.

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