CPR equipment

Abstract

The purpose of the present invention is to provide a cardiopulmonary resuscitation device with integrated compression, ventilation, defibrillation and monitoring functions. The lower part of the frame is provided with a back plate and a chest belt, and the upper part of the frame is provided with a compression unit and a breathing unit. The chest belt is provided with a bag belt, and the inner surface of the chest belt is provided with a plurality of defibrillation electrodes and ECG electrodes. The bag belt is inflated and expanded to wrap the patient's chest while pressing the defibrillation electrodes and ECG electrodes against the patient's skin. The above scheme integrates the compression, ventilation, defibrillation and monitoring functions into an integrated structure, and the different functions work together, which greatly improves the efficiency of the equipment and the convenience of operation. At the same time, the front and rear compression and the circumferential contraction are combined together. The compression unit inflates the bag belt while pressing the patient's chest. The bag belt tightly wraps the patient's chest, thereby providing a higher intrathoracic pressure change, a larger blood flow and a higher spontaneous circulation recovery rate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a cardiopulmonary resuscitation device. Background Art

[0002] Cardiopulmonary resuscitation can save patients with cardiac arrest. According to the 2015 AHA Cardiopulmonary Resuscitation Guidelines, the guidelines recommend that you perform cardiopulmonary resuscitation (chest compressions and artificial respiration) as soon as possible, and obtain a nearby AED (automatic external defibrillator) to minimize interruptions in compressions; once the AED is obtained, perform an electrocardiogram and defibrillation on the patient as soon as possible. Once cardiac arrest occurs, if it is not promptly rescued and resuscitated, it will cause irreversible damage to the patient's brain and other important organs and tissues of the people in distress after 4 to 6 minutes. Therefore, cardiopulmonary resuscitation after cardiac arrest must be performed immediately on the scene to win the most precious time for further rescue and even saving the lives of the patients with cardiac arrest.

[0003] At present, there are corresponding emergency equipment for sudden cardiac arrest on the market, but most of them work independently, such as cardiopulmonary resuscitation machines, AED defibrillators, ventilators, monitors, etc. When used together, it is difficult for the equipment to work together, the operation of the equipment is still too cumbersome, the quality of cardiopulmonary resuscitation is not high, and the success rate of treatment is almost the same as the success rate of manual compression. Moreover, the scale of the equipment used together will become huge, making it heavy and inconvenient to use. In particular, it is extremely inconvenient for out-of-hospital scenes such as ambulances, which ultimately leads to cumbersome operation of emergency equipment, loss of precious rescue time, poor emergency treatment effect, and even harm to patients. Summary of the invention

[0004] The purpose of the present invention is to provide a cardiopulmonary resuscitation device which integrates compression, ventilation, defibrillation and monitoring functions.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a cardiopulmonary resuscitation device, wherein a back plate and a chest strap are arranged at the lower part of the frame, a pressing unit and a breathing unit are arranged at the upper part of the frame, a bag strap is arranged inside the chest strap, and a plurality of defibrillation electrodes and ECG electrodes are arranged on the inner surface of the chest strap, the bag strap is inflated to wrap around the patient's chest while pressing the defibrillation electrodes and ECG electrodes tightly against the patient's skin.

[0006] The chest strap comprises an outer strap made of a non-compliant material, and the outer strap comprises a first outer strap, a second outer strap and a third outer strap, wherein a bag strap is arranged on the inner side of the middle section of the first outer strap, the upper end of the first outer strap is wound with a reel mechanism in a press positioning box located in the middle of the chest strap, and a Velcro / buckle half is arranged on the lower end, the upper end of the second outer strap is wound with a Velcro / buckle half that cooperates with the first outer strap, and the lower end is wound with a roller mechanism arranged in the back plate, a bag strap is arranged on the inner side of the middle section of the third outer strap, the upper end of the third outer strap is wound with the reel mechanism in the press positioning box, and the lower end is rotatably wound with the roller mechanism.

[0007] The first outer strap and the second outer strap are located on the same side of the press positioning box, the third outer strap is located on the other side of the press positioning box, the first outer strap extends from the middle of the chest to the armpit, the second outer strap extends from the armpit to the middle of the back, and the third outer strap extends from the middle of the chest to the middle of the back; on the first outer strap, two ends of the bag strap are reserved with a distance from two ends of the outer strap; on the third outer strap, one end of the bag strap is reserved with a distance from the upper end of the outer strap, and the other end of the bag strap extends to a position near the armpit.

[0008] The pouch is connected by a plurality of pouches, an inner strap is arranged on the inner side of the pouch, the outer periphery of the inner strap extends and is fixed to the inner wall of the outer strap, the pouch is located in the area between the inner and outer straps, and the defibrillation electrode and ECG electrode are fixed on the inner side of the inner strap.

[0009] The roller mechanism includes a first roller and a second roller whose axis is consistent with the length direction of the back plate. The lower end of the second outer binding belt is wrapped around the first reversing roller and then wound around the first roller. The lower end of the third outer binding belt is wrapped around the second reversing roller and then wound around the second roller. The power drives the first roller and the second roller to rotate forward to tighten the second outer binding belt and the third outer binding belt, or drives the first roller and the second roller to rotate reversely to release the second outer binding belt and the third outer binding belt.

[0010] The reel mechanism is arranged in a press-positioning box, which includes a box body, and a first reel and a second reel whose axis cores are consistent with the length direction of the back plate are arranged inside the box body. The first reel and the second reel are driven by power to rotate forward to tighten the first outer binding strap and the third outer binding strap, or to drive the first reel and the second reel to rotate reversely to release the first outer binding strap and the third outer binding strap.

[0011] A positioning block and a position sensor are arranged on the top of the box body. The control unit adjusts the position of the pressing unit to just above the positioning block according to the position signal transmitted by the position sensor. A defibrillation electrode is also arranged on the bottom of the box body.

[0012] The upper plate surface of the back plate is in a groove shape adapted to the human body. The control unit is arranged on the back plate. The control unit includes a PCB board, an operation panel, and a display.

[0013] The pressing unit includes a main unit and a pressing body. The pressing body includes an outer sleeve and a piston arranged inside the outer sleeve. The piston is connected to the pressing head through a pressing rod. The power source provides power to drive the piston to reciprocate in the outer sleeve. The pressing head intermittently presses the pressing positioning box. The outer sleeve is divided into an upper chamber and a lower chamber that are sealed to each other by the piston. The lower chamber is connected to the bag belt through an air pipe. The bag belt is inflated while the pressing head presses downward.

[0014] A controller and a power source are provided in the main unit. The main unit is also provided with an air-oxygen mixer and a valve assembly. An oxygen interface, an air interface and a mixed gas interface are provided on the shell of the main unit. The mask of the breathing unit is connected to the mixed gas interface on the main unit through an air supply pipe.

[0015] The frame includes a base plate, a column, and a top frame. Universal wheels are arranged at the corners of the base plate, and a cross slide rail is arranged on the top frame. The driving unit drives the pressing unit and the breathing unit to move on the cross slide rail to the top of the pressing positioning box. The column is a multi-section telescopic rod structure, and a slide rail is also arranged on the top section of the rod. The length direction of the slide rail is in the vertical direction.

[0016] The above scheme has at least the following beneficial effects:

[0017] 1. The compression, ventilation, defibrillation and monitoring functions are integrated into an integrated structure, and the different functions work together, which greatly improves the efficiency of the equipment and the convenience of operation.

[0018] 2. Combining forward and backward compression with circular contraction, the compression unit inflates the cuff while compressing the patient's chest. The cuff tightly wraps the patient's chest, thereby providing higher intrathoracic pressure changes, greater blood flow and a higher rate of spontaneous circulation recovery.

[0019] 3. The defibrillation electrodes and ECG electrodes are integrated on the inside of the chest strap, which can apply defibrillation shocks while pressing, thereby improving the success rate of defibrillation.

[0020] 4. The bag belt presses the defibrillator electrode and ECG electrode tightly against the patient's skin, reducing the transthoracic impedance of the current. There is no relative sliding between the two. The defibrillator electrode has a good defibrillation effect and the ECG electrode collects the patient's electrocardiogram signal accurately.

[0021] 5. After adjusting the tightness of the chest strap for the first time, there is no need to adjust the tightness of the chest strap again during the entire subsequent cardiopulmonary resuscitation process to reduce friction damage between the chest strap and the patient's skin.

[0022] 6. Through the coordinated action of the roller mechanism and the reel, the length of the chest strap and the position of the defibrillator electrodes are adjusted to the optimal state to adapt to patients of different body shapes.

[0023] 7. The inflation and deflation of the bag belt does not require the setting of an additional inflation and deflation mechanism and control unit. It is linked and synchronized with the action of the pressing head, reducing the complexity of the control system.

[0024] 8. The control unit can adjust the position of the pressing head in real time according to the real-time position signal sent by the position sensor, thereby ensuring that the pressing head is always located directly above the positioning block, always ensuring the correct pressing position, and thus ensuring the effect of cardiopulmonary resuscitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the cardiopulmonary resuscitation device during the non-compression period;

[0026] Figure 2 It is a schematic diagram of the overall structure of the cardiopulmonary resuscitation device during the compression period;

[0027] Figure 3 for Figure 1 A magnified schematic of the mid-back plate and chest strap;

[0028] Figure 4 for Figure 2 A zoomed-in illustration of the mid-back panel and chest strap. DETAILED DESCRIPTION

[0029] Combine the following Figure 1-Figure 4 The present invention is described in further detail.

[0030] A cardiopulmonary resuscitation device is disclosed. The lower part of a frame 10 is provided with a back plate 20 and a chest strap 30, and the upper part of the frame 10 is provided with a pressing unit 40 and a breathing unit 50. A bag belt 31 is provided inside the chest strap 30, and a plurality of defibrillation electrodes 60 and ECG electrodes 70 are provided on the inner surface of the chest strap 30. The bag belt 31 is inflated to wrap around the patient's chest and press the defibrillation electrodes 60 and ECG electrodes 70 tightly against the patient's skin.

[0031] In the present invention, a bag belt 31 is arranged inside the chest belt 30, and the front and rear compression and the circumferential contraction are combined together, that is, the pressing unit 40 inflates the bag belt 31 while pressing the patient's chest, and the bag belt 31 tightly wraps the patient's chest, thereby providing a higher intrathoracic pressure change, a larger blood flow and a higher spontaneous circulation recovery rate. At the same time, the structure of the bag belt 31 arranged inside the chest belt 30 also has a significant beneficial effect, that is, after adjusting the tightness of the chest belt 30, in the whole process of subsequent cardiopulmonary resuscitation, it is not necessary to adjust the tightness of the chest belt again, but the chest is tightened and compressed and the pressure is released by inflating and deflating the bag belt 31. When the pressing unit 40 presses the chest, the bag belt 31 is inflated, and the chest is tightened and compressed synchronously with the pressing of the pressing unit 40; when the pressing operation is removed, the bag belt 31 is deflated, and the chest is no longer subject to any restraint, which increases the change of intrathoracic pressure and improves the effect of cardiopulmonary resuscitation.

[0032] In the prior art, due to technical limitations, the defibrillation operation and the pressing operation are not synchronized. However, studies have shown that during the stage of pressing the chest and exhaling, the chest impedance is low, and the effect of applying defibrillation shock at this time is the best and the success rate is the highest. Studies have also shown that applying external force to the defibrillation electrode 60 can reduce the transthoracic resistance of the current. Therefore, another key point of the present invention is to set the defibrillation electrode 60 and the ECG electrode 70 on the inner surface of the chest strap 30. When pressing the chest, the chest strap 30 tightly wraps the chest, which is equivalent to applying an external force to the skin of the defibrillation electrode 60, reducing the transthoracic resistance of the current. The defibrillation electrode 60 fits tightly to the skin without relative sliding. The defibrillation electrode 60 applies the defibrillation operation, which improves the success rate of defibrillation. In addition, the ECG electrode monitors the patient's electrocardiogram signal in real time, and the electrocardiogram signal and other signals assist in the implementation of cardiopulmonary resuscitation operations. The defibrillation electrodes 60 can also be used as electrocardiogram electrodes during non-defibrillation periods. In addition, the device also includes a breathing unit 50, which can ventilate the patient at an appropriate time, provide the patient with respiratory support, and ensure that the lungs can perform effective gas exchange.

[0033] The present invention integrates the functions of compression, ventilation, defibrillation and monitoring into an integrated structure, and the different functions cooperate and complement each other, which greatly improves the efficiency of the equipment and the convenience of operation.

[0034] For defibrillation operation, the accuracy of the position of the defibrillation electrode 60 on the chest has a significant impact on the defibrillation effect, because the accurate placement of the defibrillation electrode 60 is a key step to ensure that the current cannot effectively pass through the heart and restore the normal rhythm of the heart. The specific positions are as follows: one electrode is usually placed in the second intercostal space on the right edge of the sternum, which can better cover the right ventricular part of the heart, and the other electrode is placed at the apex of the heart, that is, at the intersection of the left midclavicular line and the fifth intercostal space, which can effectively act on the left ventricle of the heart. The correct electrode position can ensure that the current can pass through the heart evenly, covering the key right ventricular and left ventricular areas, thereby maximizing the defibrillation effect. If the electrode position is incorrect, the current may not be able to effectively pass through the heart, resulting in defibrillation failure. Incorrect electrode position may also increase the risk of complications, such as skin burns, myocardial damage, etc.

[0035] For patients of different body shapes, the position of the defibrillation electrode 60 on the chest strap 30 needs to be adjusted accordingly. Figure 3 , Figure 4 As shown, the chest strap 30 includes an outer strap 32 of a non-compliant material, and the outer strap 32 is composed of a first outer strap 321, a second outer strap 322 and a third outer strap 323, wherein a bag strap 31 is arranged on the inner side of the middle section of the first outer strap 321, one end of the first outer strap 321 is wound with a reel mechanism in a press positioning box 33 located in the middle of the chest strap 30, and a Velcro / buckle half is arranged on the other end, one end of the second outer strap 322 is arranged with a Velcro / buckle half that cooperates with the first outer strap 321, and the other end is wound with a roller mechanism 21 arranged in the back plate 20, and a bag strap 31 is arranged on the inner side of the middle section of the third outer strap 323, and one end of the third outer strap 323 is wound with the reel mechanism in the press positioning box 33, and the other end is wound with the roller mechanism 21. That is to say, the chest strap 30 is divided into two parts, the left and right parts, and the outer straps 32 of the left and right parts can be independently contracted and released, so as to adjust the position of the defibrillation electrode 60 on the strap according to the different body shapes of patients. At the same time, in order to achieve the adjustment of the outer straps 32 of the left and right parts, the bag strap 31 is only set in a part of the middle area of ​​the left and right straps. A section of the outer strap 32 of the left and right parts is reserved at the upper end for adjusting with the reel in the pressing and positioning box 33. This part of the bag strap 31 just covers the patient's chest area, while the outer straps 32 of the left and right parts still use a single layer of outer straps 32 for the area outside the chest, which is convenient for the winding and release of the roller mechanism 21. In order to facilitate the binding of the chest strap 30 to the patient's chest, the outer strap 32 on one side is divided into a two-section structure, such as Figure 2As shown in the figure, the left half of the outer strap 32 is divided into a first outer strap 321 and a second outer strap 322, which are quickly disassembled and quickly connected by a Velcro or buckle structure, and the bag strap 31 is only arranged in the first outer strap 321 for compressing the chest, and the second outer strap 322 is a pure strap structure without the bag strap 31.

[0036] By rationally setting the structure of the chest strap 30, and in addition to the joint action of the reel structure in the pressing and positioning box 33 and the roller mechanism 21 set in the back plate 20, the length of the chest strap 30 can be adjusted while ensuring the accuracy of the position of the defibrillation electrode 60. If only one set of roller mechanisms 21 is set, only the tightness of the chest strap 30 can be adjusted, but the position of the defibrillation electrode 60 cannot be adjusted, so it cannot be guaranteed to be suitable for patients of different body shapes.

[0037] As a preferred embodiment of the present invention, the first external strap 321 and the second external strap 322 are located on the same side of the pressing and positioning box 33, and the third external strap 323 is located on the other side of the pressing and positioning box 33. The first external strap 321 extends from the middle of the chest to the armpit, the second external strap 322 extends from the armpit to the middle of the back, and the third external strap 323 extends from the middle of the chest to the middle of the back; on the first external strap 321, the two ends of the pocket strap 31 and the two ends of the external strap 32 reserve a distance; on the third external strap 323, one end of the pocket strap 31 and the upper end of the external strap 32 reserve a distance, and the other end of the pocket strap 31 extends to the position near the armpit. In this way, the Velcro or buckle structure between the first external strap 321 and the second external strap 322 is arranged exactly at the armpit, which will not rub against the patient's skin, thereby improving safety performance. As mentioned above, after adjusting the tightness of the chest strap 30, there is no need to adjust the tightness of the chest strap 30 again during the entire subsequent cardiopulmonary resuscitation process. Instead, the chest is tightened and compressed and the pressure is released by inflating and deflating the bag strap 31, and the outer strap 32 remains in place. This avoids external damage to the patient caused by periodic friction between the outer strap 32 and the patient's skin.

[0038] Furthermore, the pouch 31 is formed by connecting a plurality of pouches 311, and an inner strap 35 is provided on the inner side of the pouch 31. The outer periphery of the inner strap 35 extends and is fixed to the inner wall of the outer strap 32. The pouch 311 is located in the area between the inner and outer straps 35 and 32, and the defibrillation electrode 60 and the ECG electrode 70 are fixed on the inner side of the inner strap 35. The setting of the inner strap 35 fixes the positions of the plurality of pouches 311 on the one hand, and provides installation positions for the defibrillation electrode 60 and the ECG electrode 70 on the other hand. The defibrillation electrode 60 can also be used as an electrocardiogram electrode during non-defibrillation shock to collect the patient's electrocardiogram signal. Other sensors such as a pressure sensor and a heart sound sensor can also be provided on the inner side of the inner strap 35.

[0039] The main function of the roller mechanism 21 is to adjust the length of the chest strap 30 to make it suitable for patients of different body shapes. The roller mechanism 21 includes a first roller 211 and a second roller 212 whose shaft core is consistent with the length direction of the back plate 20. The lower end of the second outer strap 322 is wound around the first reversing roller 213 and then wound around the first roller 211. The lower end of the third outer strap 323 is wound around the second reversing roller 214 and then wound around the second roller 212. The power drives the first roller 211 and the second roller 212 to rotate forward to tighten the second outer strap 322 and the third outer strap 323, or drives the first roller 211 and the second roller 212 to rotate reversely to release the second outer strap 322 and the third outer strap 323. The first roller 211 and the second roller 212 can be driven by the same driving mechanism, or can be driven separately by different driving mechanisms.

[0040] The main function of the reel is to adjust the position of the defibrillation electrode 60 to make it suitable for patients of different body shapes. The reel mechanism is arranged in the press positioning box 33, and the press positioning box 33 includes a box body 331, and the box body 331 is provided with a first reel 333 and a second reel 334 whose shaft core is consistent with the length direction of the back plate 20. The power drives the first reel 333 and the second reel 334 to rotate forward to tighten the first outer strap 321 and the third outer strap 323, or drives the first reel 333 and the second reel 334 to rotate reversely to release the first outer strap 321 and the third outer strap 323. Similarly, the first reel 333 and the second reel 334 can be driven by the same driving mechanism, or can be driven separately by different driving mechanisms.

[0041] Through the coordinated action of the roller mechanism 21 and the reel, the length of the chest strap 30 and the position of the defibrillation electrode 60 are adjusted to an optimal state.

[0042] The compression position for cardiopulmonary resuscitation is mainly located at the lower half of the sternum, or the midpoint of the line connecting the two nipples. The selection of this position is based on anatomical characteristics, which can ensure that the heart is effectively squeezed during compression. The correct compression position can ensure the effectiveness of the compression, so that the heart is subjected to sufficient pressure to promote blood flow. If the compression position is inaccurate, the compression may be ineffective and the resuscitation effect cannot be achieved. The correct compression position can also avoid damage to the ribs and other surrounding tissues. If the compression position is too low, it is easy to cause rib fractures; if the compression position is too high, the heart may not be effectively squeezed.

[0043] It can be seen that the accuracy of the pressing position directly affects the effect of cardiopulmonary resuscitation. The correct pressing position can promote blood flow to the greatest extent, restore heart activity, and thus improve the success rate of cardiopulmonary resuscitation. In order to achieve the purpose of accurate pressing, a positioning block 332 and a position sensor (not shown in the figure) are provided on the top of the box body 331. The control unit 80 adjusts the position of the pressing unit 40 to just above the positioning block 332 according to the position signal transmitted by the position sensor. Regardless of the patient's body shape, when we tie the chest strap 30, we align the positioning block 332 of the box body 331 with the correct pressing position to place it. The position sensor collects the position of the positioning block 332 and feeds it back to the control unit 80. The control unit 80 controls the pressing head 45 of the pressing unit 40 to move to just above the positioning block 332 to perform the pressing operation to ensure the correctness of the pressing position. Even when the patient is moving (such as in an ambulance, or in the process of being transferred from an ambulance to a hospital), the control unit 80 adjusts the position of the pressing head 45 in real time according to the real-time position signal sent by the position sensor, thereby ensuring that the pressing head 45 is always located directly above the positioning block 332, and the pressing position is always correct, thereby ensuring the effect of cardiopulmonary resuscitation. A flexible material can be provided at the bottom of the box body 331 to reduce damage to the skin. A defibrillation electrode 60 can also be provided at the bottom of the box body 331, where the defibrillation electrode 60 is accurately positioned with respect to the patient's chest, without relative sliding, and has high defibrillation efficiency.

[0044] The upper surface of the back panel 20 is in the shape of a groove adapted to the human body. The groove includes an area that matches the back of the human body, an area that supports the head and back at an appropriate angle, and an area that supports the neck. The control unit 80 is arranged on the back panel 20 for easy operation and observation. The control unit 80 includes a PCB board, an operation panel, and a display.

[0045] As a preferred embodiment, the pressing unit 40 includes a main unit 41 and a pressing body. The pressing body includes an outer sleeve 42 and a piston 43 arranged inside the outer sleeve. The piston 43 is connected to a pressing head 45 through a pressure rod 44. The power source provides power to drive the piston 43 to move back and forth in the outer sleeve 42. The pressing head 45 intermittently presses the positioning box 33. The outer sleeve 42 is divided into an upper chamber A and a lower chamber B sealed to each other by the piston 43. The lower chamber B is connected to the bag belt 31 through an air pipe 46. The pressing head 45 inflates the bag belt 31 while pressing downward. The power source for driving the piston 43 to move can be compressed gas, a screw nut mechanism, or a linear motion structure of other structures. The lower chamber B of the outer sleeve 42 is originally filled with gas. When the power drives the piston 43 to move downward, the pressing head 45 presses the chest to perform cardiopulmonary resuscitation. At this time, the volume of the lower chamber B decreases, and the gas enters the bag belt 31 to inflate the bag belt 31. The chest strap 30 tightens and compresses the chest. Figure 2 As shown; when the power-driven piston 43 moves upward, the pressing head 45 leaves the patient's chest, and the volume of the lower chamber B increases to form a negative pressure, and the gas in the bag belt 31 returns to the lower chamber B, and the bag belt 31 deflates and shrinks, releasing the restraint on the patient's chest, as shown in FIG. Figure 1 As shown. This structural setting also plays a role in active decompression, thereby increasing venous blood return. At the same time, the inflation and deflation of the bag belt 31 does not require the setting of an additional inflation and deflation mechanism and control system. It is linked and synchronized with the action of the pressing head 45, reducing the complexity of the control system. It should be noted that the movement of the piston 43 is completed in a very short time, so the inflation and deflation of the bag belt 31 are almost instantaneous, so it can effectively squeeze and release the patient's chest.

[0046] The host 41 is provided with a controller and a power source, which may be compressed gas (compressed air or nitrogen or air-oxygen mixed gas) or a linear drive mechanism such as a motor or a screw-nut mechanism. The host 41 is also provided with an air-oxygen mixer and a valve assembly. The housing of the host 41 is provided with an oxygen interface, an air interface and a mixed gas interface. The mask 51 of the breathing unit 50 is connected to the mixed gas interface on the host 41 through an air supply pipe 52. Integrating the relevant structures of the breathing unit 50 into the host 41 of the pressing unit 40 reduces the volume of the entire device on the one hand, and improves the coordination of the control of the pressing unit 40 and the breathing unit 50 on the other hand.

[0047] Furthermore, the frame 10 includes a base plate 11, a column 12, and a top frame 13. Universal wheels 14 are provided at the corners of the base plate 11, and a cross slide rail (not shown in the figure) is provided on the top frame 13. The driving unit drives the pressing unit 40 and the breathing unit 50 to move on the cross slide rail to just above the pressing positioning box 33. The column 12 is a multi-section telescopic rod structure, and a slide rail is also provided on the top section of the rod, and the length direction of the slide rail is in the vertical direction. The cross slide rail is composed of two sets of mutually perpendicular slide rails, which can realize precise positioning and movement in a two-dimensional plane. Therefore, with the assistance of the position sensor, the pressing unit 40 can be accurately moved in the horizontal plane to just above the pressing positioning box 33; the column 12 is a multi-section telescopic rod structure, which can be used in various scenes such as ambulances, on the ground and by the bed; the top section of the column 12 is provided with a vertical slide rail, and the top frame 13 can move up and down along the slide rail to adjust the distance between the pressing unit 40 and the back plate 20; universal wheels 14 are also provided at the corners of the bottom plate 11 to facilitate the movement of the entire equipment, so that it can be used in different environments.

[0048] When performing cardiopulmonary resuscitation for patients of different body types, the pressing depth is not the same, and the pressing depth is one of the key factors to ensure the effectiveness of cardiopulmonary resuscitation. For the pressing depth, generally speaking, it is 5-6cm for adults, 2-5cm for children, 2-4cm for infants, and more than 5cm for the elderly. It can be seen that when performing cardiopulmonary resuscitation for patients of different types and body types, the pressing depth needs to be determined according to the specific conditions of the patients. In the present invention, in addition to considering the length of the chest strap 30 and the position of the defibrillation electrode 60, it is also necessary to consider the problem of the inflation amount of the bag belt 31. If more gas needs to be filled into the bag belt 31, it means that the displacement of the piston 43 is larger. Under the same pressing depth, the initial distance between the pressing unit 40 and the patient's chest should be set larger, that is, the height of the top frame 13 needs to be adjusted upward; if less gas needs to be filled into the bag belt 31, it means that the displacement of the piston 43 is smaller. Under the same pressing depth, the initial distance between the pressing unit 40 and the patient's chest should be set smaller, that is, the height of the top frame 13 needs to be adjusted downward. Therefore, it is necessary to reasonably control multiple factors to ensure the best effect of cardiopulmonary resuscitation.

[0049] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the schemes or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A cardiopulmonary resuscitation device, characterized in that: A back plate (20) and a chest belt (30) are arranged at the bottom of the frame (10), and a pressing unit (40) and a breathing unit (50) are arranged at the top of the frame (10); a bag belt (31) is arranged inside the chest belt (30), and a plurality of defibrillation electrodes (60) and ECG electrodes (70) are arranged on the inner surface of the chest belt (30); the bag belt (31) is inflated to wrap around the patient's chest and simultaneously presses the defibrillation electrodes (60) and the ECG electrodes (70) against the patient's skin; The chest strap (30) comprises an outer strap (32) made of a non-compliant material, wherein the outer strap (32) comprises a first outer strap (321), a second outer strap (322) and a third outer strap (323), wherein a bag strap (31) is arranged on the inner side of the middle section of the first outer strap (321), the upper end of the first outer strap (321) is wound with a reel mechanism in a press positioning box (33) located in the middle of the chest strap (30), and a Velcro / Hook is arranged on the lower end. The second outer strap (322) has a hook and loop half body, the upper end of which is provided with a Velcro / hook and loop half body cooperating with the first outer strap (321), and the lower end of which is in winding cooperation with a roller mechanism (21) arranged in the back plate (20); the inner side of the middle section of the third outer strap (323) is provided with a bag strap (31), and the upper end of the third outer strap (323) is in winding cooperation with the reel mechanism in the pressing and positioning box (33), and the lower end of the third outer strap (323) is in winding cooperation with the roller mechanism (21).

2. The cardiopulmonary resuscitation device according to claim 1, characterized in that: The first outer strap (321) and the second outer strap (322) are located on the same side of the pressing and positioning box (33), and the third outer strap (323) is located on the other side of the pressing and positioning box (33). The first outer strap (321) extends from the middle of the chest to the armpit, the second outer strap (322) extends from the armpit to the middle of the back, and the third outer strap (323) extends from the middle of the chest to the middle of the back. On the first outer strap (321), two ends of the bag strap (31) are spaced apart from two ends of the outer strap (32). On the third outer strap (323), one end of the bag strap (31) is spaced apart from the upper end of the outer strap (32), and the other end of the bag strap (31) is extended to a position near the armpit.

3. The cardiopulmonary resuscitation device according to claim 1, characterized in that: The bag belt (31) is formed by connecting a plurality of bag bags (311), an inner strap (35) is arranged on the inner side of the bag belt (31), the outer periphery of the inner strap (35) is extended and fixed to the inner wall of the outer strap (32), the bag bag (311) is located in the area between the inner and outer straps (35, 32), and the defibrillation electrode (60) and the ECG electrode (70) are fixed on the inner side surface of the inner strap (35).

4. The cardiopulmonary resuscitation device according to claim 1, characterized in that: The roller mechanism (21) comprises a first roller (211) and a second roller (212) whose shaft cores are consistent with the length direction of the back plate (20); the lower end of the second outer binding belt (322) is wound around the first reversing roller (213) and then wound around the first roller (211); the lower end of the third outer binding belt (323) is wound around the second reversing roller (214) and then wound around the second roller (212); the first roller (211) and the second roller (212) are driven by power to rotate forward to tighten the second outer binding belt (322) and the third outer binding belt (323), or to drive the first roller (211) and the second roller (212) to rotate backward to release the second outer binding belt (322) and the third outer binding belt (323).

5. The cardiopulmonary resuscitation device according to claim 1, characterized in that: The reel mechanism is arranged in a push positioning box (33), and the push positioning box (33) comprises a box body (331). A first reel (333) and a second reel (334) are arranged inside the box body (331), and the axis cores are consistent with the length direction of the back plate (20). The first reel (333) and the second reel (334) are driven by power to rotate forward to tighten the first outer binding belt (321) and the third outer binding belt (323), or to drive the first reel (333) and the second reel (334) to rotate backward to release the first outer binding belt (321) and the third outer binding belt (323).

6. The cardiopulmonary resuscitation device according to claim 5, characterized in that: A positioning block (332) and a position sensor are arranged on the top of the box body (331); the control unit (80) adjusts the position of the pressing unit (40) to be directly above the positioning block (332) according to a position signal transmitted by the position sensor; and a defibrillation electrode (60) is also arranged on the bottom of the box body (331).

7. The cardiopulmonary resuscitation device according to claim 5, characterized in that: The upper surface of the back panel (20) is in a groove shape adapted to the human body. The control unit (80) is arranged on the back panel (20). The control unit (80) comprises a PCB board, an operation panel, and a display.

8. The cardiopulmonary resuscitation device according to claim 5, characterized in that: The pressing unit (40) comprises a main body (41) and a pressing body, wherein the pressing body comprises an outer sleeve (42) and a piston (43) arranged inside the outer sleeve, wherein the piston (43) is connected to a pressing head (45) via a pressing rod (44), wherein a power source provides power to drive the piston (43) to reciprocate in the outer sleeve (42), wherein the pressing head (45) intermittently presses the pressing positioning box (33), and the outer sleeve (42) is divided into an upper chamber (A) and a lower chamber (A) which are sealed from each other by the piston (43). The lower chamber (B) is connected to the bag belt (31) through the air pipe (46), and the bag belt (31) is inflated while the pressing head (45) is pressed downward. A controller and a power source are provided in the main unit (41). The main unit (41) is also provided with an air-oxygen mixer and a valve assembly. An oxygen interface, an air interface and a mixed gas interface are provided on the shell of the main unit (41). The mask (51) of the breathing unit (50) is connected to the mixed gas interface on the main unit (41) through the air supply pipe (52).

9. The cardiopulmonary resuscitation device according to claim 1, characterized in that: The frame (10) comprises a bottom plate (11), a column (12), and a top frame (13); a universal wheel (14) is provided at a corner of the bottom plate (11); a cross slide rail is provided on the top frame (13); a driving unit drives the pressing unit (40) and the breathing unit (50) to move on the cross slide rail to the top of the pressing positioning box (33); the column (12) is a multi-section telescopic rod structure; a slide rail is also provided on the top section of the rod; and the length direction of the slide rail is in the vertical direction.

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