Auxiliary device for cardio-pulmonary resuscitation

Abstract

The invention belongs to the technical field of first-aid equipment, particularly relates to an auxiliary device for cardio-pulmonary resuscitation, and aims to solve the technical problem that external chest compression frequency and depth cannot be maintained or rescue is interrupted due to rapid exhaustion of physical strength of a rescuer in the field, extreme or manpower limited environment. The device comprises a mounting frame, a driving device and a pressing device, the driving device is fixed in the mounting frame, and a motor drives cams on the two sides to rotate synchronously through a bevel gear set; the pressing device makes contact with the cam through a roller on the top of a first connecting rod of the pressing device, longitudinal accurate guiding and automatic rebounding are achieved through a limiting column and a spring structure, and therefore the pressing device is driven by the cam to do stable and vertical reciprocating motion. The device can be supported above a patient through a support and is powered by an external power source to achieve continuous operation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of first-aid equipment, and particularly relates to an auxiliary device for cardiopulmonary resuscitation. BACKGROUND

[0002] Sudden cardiac death is one of the most urgent and deadly public health challenges worldwide, and the golden time window for rescue is extremely short, usually only 4-6 minutes. During this process, timely and effective cardiopulmonary resuscitation is the key to maintaining the patient's life and gaining decisive time for subsequent advanced life support. Standard cardiopulmonary resuscitation includes two core links: chest compression and artificial respiration. Artificial respiration aims to deliver oxygen to the patient's lungs, while chest compression squeezes the heart through mechanical force to simulate its pumping function, forcing the minimum blood circulation to oxygenate the brain and heart itself, delaying irreversible damage.

[0003] Manual cardiopulmonary resuscitation requires a frequency of 100-120 times per minute and a depth of 5-6 centimeters, and requires the chest to fully rebound after compression, which is a great test of the rescuer's physical strength. Rapid physical exhaustion easily leads to reduced compression frequency, insufficient depth or interruption, directly leading to a sharp drop in blood perfusion and reducing the patient's survival hope. Military officers and soldiers are engaged in high-intensity physical training and extreme tasks for a long time, and their bodies are often under extreme physiological and psychological load, making them a relatively high-risk group for sudden cardiac death. Despite the rigorous military medical support system, sudden death incidents can still occur in outdoor training, long-distance training, special operations training, and other environments far from fixed medical facilities. In such environments, comrades are often the first witnesses and rescuers. However, after high-intensity training or in harsh battlefield environments, the rescuer's physical strength may be exhausted, or rescue may need to be implemented in complex terrain and limited manpower conditions, making it extremely difficult to maintain high-standard manual compression, and even rescue may be interrupted due to the rescuer's physical exhaustion.

[0004] Therefore, there is an urgent need to develop a portable auxiliary device that can overcome the limitations of manpower and ensure the quality and continuity of compression. SUMMARY

[0005] The present application aims to provide an auxiliary device for cardiopulmonary resuscitation, mainly to solve the technical problem of insufficient manual cardiopulmonary resuscitation strength and easy exhaustion leading to rescue interruption in the case of sudden cardiac death.

[0006] To solve the above technical problems, the present application provides the following technical solutions: An auxiliary device for cardiopulmonary resuscitation, comprising an external power supply, a driving device, a mounting bracket, and a compressor, the driving device is installed in the mounting bracket, the compressor is longitudinally limited and installed on the mounting bracket and is driven by the driving device to move up and down, and the external power supply is electrically connected with the driving device.

[0007] The driving device comprises a motor, a connecting shaft, a driving gear, a driven gear, a connecting shaft and a cam, wherein the driving gear and the driven gear are bevel gears, the mounting frame comprises a first limiting plate and a first mounting plate; the first mounting plate comprises a top plate and a bottom plate, the motor is fixedly installed on the bottom plate, the driving gear is rotatably installed on the top plate and is fixedly connected with the driving shaft of the motor; the first limiting plate has four pieces and is fixedly connected on both sides of the first mounting plate in the longitudinal direction, the connecting shaft is fixedly installed at the center of the driven gear, the driven gear has two pieces and is symmetrically installed on the driving gear in meshing mode, the connecting shaft of the driven gear is rotatably installed on the two pieces of the first limiting plate on the same side, the cam is fixedly connected on the connecting shaft and is located between the two pieces of the first limiting plate on the same side, the presser is limitingly installed on the plurality of first limiting plates and abuts against the cam, when the motor works, the cam is driven to rotate through the gear device, and the cam can drive the presser to periodically move up and down, so that the pressing effect during cardiopulmonary resuscitation is achieved.

[0008] Preferably, the frequency of the driving device driving the presser is 100-120 times per minute.

[0009] Preferably, the support is further included, the support is installed at four corners of the mounting frame, the support comprises a support arm and a support leg, a second mounting plate is integrally formed at the lower part of the support, screw holes are arranged on the second mounting plate, a threaded stud is fixedly connected on the upper part of the support leg, and the threaded stud is fitted and installed in the screw hole of the second mounting plate.

[0010] Preferably, the support leg is disc-shaped, and anti-skid lines are arranged on the bottom of the support leg.

[0011] Preferably, the presser comprises a first connecting rod, a second connecting rod, a third mounting plate, a pressing plate and a soft pad, the first connecting rod has two pieces and is limitingly installed in the longitudinal direction between the two pieces of the first limiting plate on the same side, the upper part of the first connecting rod abuts against the cam, and the lower part penetrates through the bottom plate of the first mounting plate, the second connecting rod is integrally formed on both sides of the second mounting plate, the second connecting plate is fixedly installed on the lower part of the second connecting rod through bolts, the pressing plate is fixedly installed on the lower part of the second mounting plate, the pressing plate is used for pressing the chest cavity of a patient, and the soft pad is installed on the lower part of the pressing plate.

[0012] Preferably, a second limiting plate is arranged on the top of the first connecting rod, a limiting slot is arranged in the longitudinal direction on the first limiting plate, a limiting column is fixedly connected in the limiting slot, limiting holes are arranged on both sides of the second limiting plate, the limiting column is installed on the limiting column in the two pieces of the first limiting plate on the same side through the limiting holes, a spring is further sleeved on the limiting column, the spring is located at the lower part of the second limiting plate, and the presser is used for rebounding when backstroke is needed.

[0013] Preferably, a roller is further fixedly connected on the upper part of the second limiting plate, and the roller abuts against the first limiting plate.

[0014] Preferably, the stroke difference of the cam is 5-6 cm.

[0015] The beneficial effects of the present application are as follows: the present application sets the driving device powered by an external power supply, the mounting frame and the presser matched therewith, the presser is automatically driven by the driving device to move up and down stably and regularly, thereby completely replacing the manual pressing physical labor of the rescuer, effectively solving the technical problems of the decrease of pressing frequency, the insufficient depth or the interruption of rescue caused by the rapid exhaustion of the rescuer's physical strength in a long time or extreme environment, and ensuring that the cardiopulmonary resuscitation pressing action can be continuously and uninterruptedly performed at the standard required frequency and depth, thereby winning valuable time for maintaining the patient's vital signs. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application patent; Figure 2 It is a schematic diagram of the internal structure of the present application patent; Figure 3 It is a schematic diagram of the overall structure of the driving device of the present application patent; Figure 4 It is a schematic diagram of the overall structure of the presser of the present application patent; Figure 5 It is a sectional view of the limiting plate of the present application patent; The reference numerals in the drawings of the specification include: 1, mounting frame; 101, first mounting plate; 102, first limiting plate; 103, limiting groove; 104, limiting column; 105, spring; 2, bracket; 201, support arm; 202, second mounting plate; 203, stud; 204, support leg; 3, presser; 301, first connecting rod; 302, second connecting rod; 303, third mounting plate; 304, pressing plate; 305, soft pad; 306, roller; 307, second limiting plate; 4, driving device; 401, motor; 402, driving gear; 403, driven gear; 404, connecting shaft; 405, cam. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0020] In the description of the present application, several meanings are one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are not included in the number, above, below, within, etc. are understood to include the number. If the terms "first", "second", "third" are described, they are only for the purpose of description and to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the present application.

[0022] The present application provides an auxiliary device for cardiopulmonary resuscitation, as shown in Figures 1-5 As shown in the figure, the device as a whole mainly consists of a mounting rack 1, a driving device 4, a presser 3, and an optional bracket 2 and an external power supply. Among them, the mounting rack 1 is the supporting framework of the whole device; the driving device 4 is fixedly installed inside the mounting rack 1, which is used to provide accurate and stable mechanical power; the presser 3 is driven by the driving device 4, and performs vertical reciprocating motion to simulate standard chest compression action; the bracket 2 is used to support the device stably above the patient's body; the external power supply provides continuous power for the driving device 4.

[0023] The mounting rack 1 comprises two horizontally arranged first mounting plates 101 and four vertically arranged first limiting plates 102. The first mounting plate 101 is designed as a double-layer plate structure with a top plate and a bottom plate parallel to each other and maintaining a certain distance, providing a mounting space for internal components. The four first limiting plates 102 are divided into two groups, with two plates in each group, which are respectively and fixedly connected to the two long sides of the first mounting plate 101, thereby forming a solid and rigid frame together with the first mounting plate 101.

[0024] The driving device 4 is integrated in the frame space formed by the mounting rack 1. The core of the driving device 4 is a motor 401 which is firmly fixed and mounted on the bottom plate of the first mounting plate 101, with its drive shaft extending vertically upward. A driving gear is rotatably mounted on the top plate of the first mounting plate 101 through a bearing or shaft sleeve structure, and the central hole of the driving gear is fixedly connected with the drive shaft of the motor 401 through key connection or tight fit, etc., so that the motor 401 can directly drive the driving gear to rotate. The driving gear adopts a bevel gear structure. Engaged with the driving gear are two driven gears, which are also bevel gears, symmetrically arranged on both sides of the driving gear, thereby converting the vertical rotational motion of the motor 401 drive shaft into two horizontal rotational motions. The center of each driven gear is fixedly connected with a connecting shaft 404. The corresponding positions of the two first limiting plates 102 on the same side are provided with shaft holes and installed with bearings, and the two ends of the connecting shaft 404 are respectively supported in the two bearings, thereby realizing the stable rotation of the connecting shaft 404 and the driven gear thereon on the first limiting plate 102. On each connecting shaft 404, the section between the two first limiting plates 102 on the same side is also fixedly installed with a cam 405. By accurately designing the gear ratio of the driving gear and the driven gear, the speed of the cam 405 can be controlled, thereby ensuring that the pressing frequency meets the standard requirement of 100 to 120 times per minute.

[0025] The presser 3 is used to directly press the lower part of the sternum of the patient, and is longitudinally limitedly installed on the first limiting plate 102 of the mounting frame 1 through a guiding and limiting mechanism, and the upper part thereof is in contact with the cam 405 of the driving device 4. The presser 3 comprises two vertically arranged first connecting rods 301. The two first connecting rods 301 are respectively located on the two sides of the device, and each first connecting rod 301 is located between the two first limiting plates 102 on the same side. A second limiting plate 307 is fixedly arranged at the top of the first connecting rod 301. A longitudinally extending limiting groove 103 is processed on the inner side surface of each first limiting plate 102. A vertical limiting column 104 is fixedly installed in the limiting groove 103. Limiting holes are formed in the two side edges of the second limiting plate 307, and the limiting holes can be exactly sleeved on the limiting column 104 of the first limiting plate 102 on the same side. Through the cooperation of the limiting holes and the limiting column 104, the first connecting rod 301 and the whole presser 3 are strictly limited to only slide up and down along the axial direction of the limiting column 104, and cannot be laterally deviated or inclined, so that the verticality and stability of the pressing action are ensured. A roller 306 is also fixedly installed on the upper surface of the second limiting plate 307, and the roller 306 is in rolling contact with the working profile surface of the corresponding cam 405 below, so as to convert the sliding friction between the cam 405 and the presser 3 into rolling friction when the cam 405 rotates, thereby effectively reducing the running resistance and part wear. A spring 105 is sleeved on each limiting column 104 below the second limiting plate 307. When the cam 405 rotates to the lifting section to push the presser 3 to move downward, the spring 105 is compressed to store energy; when the cam 405 rotates to the return section, the spring 105 is actively and quickly pushed upward by the elastic restoring force of the compressed spring 105, so as to simulate the "full chest recoil" action required when pressing by hand. The lower part of the first connecting rod 301 extends downward through the bottom plate of the first mounting plate 101 in sequence. The second connecting rod is fixedly connected to the lower end of the first connecting rod 301, and the second connecting rod is integrally provided with a third mounting plate at the bottom. The third mounting plate is fixedly installed below and is used to directly contact the press plate 304 of the patient. In order to disperse the pressure during pressing and avoid unnecessary damage to the sternum of the patient, a soft pad 305 made of flexible material is detachably or fixedly installed on the lower surface of the press plate 304. The lifting of the profile of the cam 405 is accurately designed, and the difference between the maximum and minimum radii thereof is set to 5 to 6 cm, so as to ensure that the presser 3 can reach the 5 to 6 cm pressing depth required by the standard cardiopulmonary resuscitation when driving the press plate 304 to press downward.

[0026] In order to adapt to different rescue environment and patient size, the device can also be equipped with a support 2. The support 2 includes four arms 201, the upper end of the four arms 201 are respectively fixedly connected below the four corners of the first mounting plate 101 of the mounting frame 1. At the lower end of each arm 201, a horizontally outwardly extending second mounting plate 202 is integrally formed. A threaded hole is formed in the second mounting plate 202. A separate leg 204 has a threaded stud 203 vertically fixed at the center of the upper end. By rotating the stud 203 of the leg 204 into the threaded hole of the second mounting plate 202 of the arm 201, the detachable connection of the leg 204 and the arm 201 can be achieved. This threaded connection allows the user to fine-tune the height of the entire device relative to the patient's body by rotating the leg 204, ensuring that the initial position of the pressing plate 304 is appropriate. The leg 204 is designed as a disc to provide a stable support surface. In order to further enhance the stability of the device during pressing and prevent it from sliding, radial or concentric anti-slip patterns are processed on the bottom disc surface of the leg 204.

[0027] At the same time, there is also a separate external power supply, such as a portable DC battery pack, which is electrically connected to the motor 401 in the driving device 4 through a wire, providing continuous and reliable power for the entire cardiopulmonary resuscitation auxiliary device, enabling it to replace manual chest compression operation for a long time and high quality until professional rescue personnel arrive.

[0028] In use, after confirming the environment safety and the patient unconscious and normal breathing, immediately call for help and get AED, and place the patient supine on a hard flat surface and expose the chest; quickly assemble the device, or use the assembled device, rotate the foot 204 into the second mounting plate 202 screw hole at the lower end of the support arm 201 and adjust to horizontal stability, connect the external power supply to the motor 401, then place the device above the patient, adjust the foot 204 to accurately align the center of the soft pad 305 at the lower 1 / 3 of the patient's sternum, and slowly lower it to the ground until the foot 204 is stable and the soft pad 305 touches the skin; turn on the power, drive the device 4 to start vertical pressing with the frequency of 100-120 times per minute, the operator needs to immediately observe to ensure that the pressing depth reaches 5-6 cm and the chest fully rebounds after each pressing, and strictly follow the 30:2 ratio to perform artificial respiration during the pressing gap; continuously monitor the stability of the device operation and the patient's response, and only in the case of AED analysis, shock, every 2 minutes re-evaluation, patient life signs recovery or environmental danger, pause the pressing, turn off the power and re-align and start after handling; after professional rescue personnel take over or the patient recovers from spontaneous circulation and respiration, terminate the use, turn off the power and remove the device and clean and disinfect it for reuse. It should be noted that the device is a mechanical auxiliary tool for external chest compression, which must be used in combination with artificial respiration, ensure that the foot 204 is securely installed and the device is stable before use, and strictly prohibit any part of the body from entering the movement track of the pressing plate 304 during operation, and regularly check the battery level, component integrity and movement mechanism lubrication state.

[0029] The foregoing description of specific exemplary embodiments of the application will be better understood when read in conjunction with the accompanying drawings. It should be understood that the description is not intended to limit the application to the precise forms disclosed, and the above-described embodiments are provided for illustrative purposes only. It is apparent that various modifications and changes can be made without departing from the scope of the application as set forth in the claims. The above-described embodiments are merely illustrative of the present application, and are not intended to limit the present application. The specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and the exemplary embodiments are selected and described for the purpose of explaining the specific principles of the present application and its practical application, so that those skilled in the art can make modifications, replacements, variations and various different selections and changes to the embodiments without creative contribution after reading the specification, as long as they are within the scope of the claims of the present application.

Claims

1. An auxiliary device for cardiopulmonary resuscitation comprising an external power source, characterized in that, The driving device (4) is installed in the mounting frame (1), the presser (3) is longitudinally limitedly installed on the mounting frame (1) and is driven by the driving device (4) to move up and down, and the external power supply is electrically connected with the driving device (4).

2. The auxiliary device for cardiopulmonary resuscitation according to claim 1, characterized in that, The frequency of the driving device (4) driving the presser (3) is 100-120 times per minute.

3. The auxiliary device for cardiopulmonary resuscitation according to claim 1, characterized in that, The stroke of the presser (3) is 5-6 cm.

4. The auxiliary device for cardiopulmonary resuscitation according to claim 1, characterized in that, The support (2) is installed at four corners of the mounting frame (1).

5. The device according to claim 1, wherein The driving device (4) comprises a motor (401), a connecting shaft (404) and a cam (405), the mounting frame (1) comprises a first limiting plate (102) and a first mounting plate (101), the first limiting plate (102) is fixedly installed on the first mounting plate (101), the motor (401) is fixedly installed on the first limiting plate (102), the cam (405) is fixedly installed on the connecting shaft (404), the connecting shaft (404) is rotatably installed on the first limiting plate (102) and is driven by the motor (401), and the presser (3) is limitedly installed on the first limiting plate (102) and abuts against the cam (405).

6. The device according to claim 4, wherein The support (2) comprises a supporting arm (201) and a supporting leg (204), the support (2) is integrally formed with a second mounting plate (202) at a lower portion, screw holes are formed in the second mounting plate (202), a stud (203) is fixedly connected to an upper portion of the supporting leg (204), and the stud (203) is fitted into the screw hole of the second mounting plate (202).

7. The device according to claim 6, wherein The supporting leg (204) is disc-shaped.

8. The device according to claim 6, wherein the device is a cardiopulmonary resuscitation assisting device. Anti-skid lines are arranged on a bottom of the supporting leg (204).

9. The auxiliary device for cardiopulmonary resuscitation according to claim 5, characterized by The presser (3) comprises a pressing plate (304) and a soft pad (305), the pressing plate (304) is used for pressing the chest of a patient, and the soft pad (305) is installed at a lower portion of the pressing plate (304).

10. The auxiliary device for cardiopulmonary resuscitation according to claim 5, characterized by The stroke difference of the cam (405) is 5-6 cm.

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