Cardiopulmonary resuscitation training device

Abstract

The invention discloses a cardio-pulmonary resuscitation training device which comprises a base, a pressing mechanism and a pressing auxiliary mechanism, the pressing mechanism comprises a pressing part, a guide rod, a pressure cylinder and a conduction part, and the pressing auxiliary mechanism comprises a limiting disc connected with a one-way bearing, a limiting pin synchronously moving with pressing operation and other structures. Different gas pressures are set in the pressure cylinder to simulate different chest compression resistances, and compressed gas provides springback support after compression to drive the compression auxiliary mechanism to provide reverse motion prevention in springback motion, so that a student is prevented from performing next compression operation when the student does not completely springback, and the student experience is improved. Therefore, the student can perform complete pressing and springback, thereby helping the student to master a single pressing operation and complete springback, and further helping the student to master the pressing frequency.

Description

Technical Field

[0001] The present application relates to the field of medical simulation, and in particular to a cardiopulmonary resuscitation training device. Background Art

[0002] Cardiopulmonary resuscitation (CPR) is a technique that combines artificial respiration and chest compressions for first aid when breathing and heartbeat stop. The purpose is to open the airway and restore breathing and circulation. The quality of chest compressions directly affects the effectiveness of resuscitation. The depth, rate, and rebound of compressions are all important indicators. Among them, the core requirement of chest rebound is complete rebound: after each compression, the rescuer must allow the chest to fully rebound to its natural position to ensure that the heart is adequately filled with blood (that is, to ensure venous return). Failure of the chest to fully rebound will reduce the blood filling of the heart, directly affecting the circulation efficiency of the next compression, and there is a risk of increased intrathoracic pressure causing secondary damage. People can only perform cardiopulmonary resuscitation for others after fully understanding the knowledge of cardiopulmonary resuscitation and receiving training in this area.

[0003] Existing manikins typically use linear compression springs installed in the chest cavity to simulate the elasticity of compressions. This means that the linear compression springs provide resistance within the thorax. Because the springs are fixed inside the manikin, the compression force cannot be adjusted. Therefore, a variety of springs are required to simulate the varying chest compression resistances for different cases. The manikin's complex structure makes disassembly and spring replacement difficult, and the springs are prone to fatigue during frequent compressions.

[0004] To this end, we proposed a cardiopulmonary resuscitation training device to simulate different chest compression resistances in different cases and ensure that the chest cavity fully rebounds to its initial state after each compression. Summary of the Invention

[0005] In order to achieve the above-mentioned objectives, the present application provides a cardiopulmonary resuscitation training device, comprising a base, a pressing mechanism, and a pressing auxiliary mechanism, wherein: The pressing mechanism includes a pressing portion, a guide rod, a pressure cylinder, and a conducting portion. The bottom of the pressure cylinder is fixedly connected to the base, the top of the pressure cylinder is provided with an opening, the conducting portion is slidably connected to the inner wall of the pressure cylinder, one end of the guide rod is fixedly connected to the conducting portion, and the other end extends through the opening to the outside of the pressure cylinder and is fixedly connected to the pressing portion. The cam is fixedly provided with a first end in contact with the bottom surface of the support shaft, and the cam is fixedly provided with a first driving rod and a second driving rod at the bottom surface of the support shaft, and the cam is connected with the second driving rod by the second engaging groove of the support shaft.

[0006] Furthermore, the support shaft includes a first support shaft and a second support shaft that are fixedly connected. The first support shaft is clamped with the one-way bearing, and the second support shaft is rotatably connected to the second driving rod.

[0007] Furthermore, a support sleeve is provided on the second support shaft to prevent the second driving rod from moving along the axial direction on the second support shaft.

[0008] Furthermore, it also includes a sleeve, which is arranged in the opening to provide guidance and lubrication for the guide rod.

[0009] Furthermore, it also includes a dust cover, which is arranged on the outside of the shaft sleeve.

[0010] Furthermore, it also includes a sealing layer, which is arranged between the outer periphery of the conducting part and the inner wall of the pressure cylinder.

[0011] Furthermore, a pressure sensor is included to monitor the gas pressure in the pressure cylinder.

[0012] Furthermore, a buffer portion is included for buffering the force exerted on the bottom and top of the pressure cylinder during the reciprocating motion of the conductive portion.

[0013] Furthermore, the pressure cylinder further includes at least one through hole for injecting or releasing the gas in the pressure cylinder.

[0014] Furthermore, the pressure cylinder is configured to include a cylinder bottom, a cylinder body, and a cylinder cover. The cylinder bottom and the cylinder cover are detachably connected via a connecting column, and sealing layers are provided at the contact portions of the cylinder bottom and the cylinder cover with the cylinder body.

[0015] The beneficial effects of this application are: The compression mechanism simulates compression resistance and provides rebound support: By injecting gas of different pressures into the pressure cylinder, the chest compression resistance of different human bodies is simulated. During the compression process, the gas pressure in the pressure cylinder gradually increases. After the compression is completed, the increased gas pressure provides power support for the chest rebound to drive the movement of the compression assist mechanism. At the same time, a pressure sensor is set to monitor the gas pressure in the pressure cylinder. By calculating the change in gas pressure, the compression depth can be obtained; The compression assist mechanism can provide reverse movement prevention through the one-way bearing and limit plate during rebound movement, ensuring that each compression operation of the trainee can complete the complete chest rebound, thereby completing a compression cycle and further mastering the compression frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the cardiopulmonary resuscitation training device according to an embodiment of the present application.

[0017] Figure 2 It is a cross-sectional schematic diagram of the pressing structure of an embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the exploded structure of the pressing auxiliary mechanism of an embodiment of the present application.

[0019] Figure 4 It is a structural schematic diagram of the annular limiting groove in an embodiment of the present application.

[0020] Figure 5 This is a schematic diagram of the coordination between the reset module and the limit pin in an embodiment of the present application.

[0021] Figure 6 This is a schematic diagram of the use status of the pressing auxiliary mechanism in an embodiment of the present application.

[0022] Figure 7 It is a schematic diagram of the explosion structure of a pressure cylinder in another embodiment of the present application.

[0023] Figure 8 It is a structural diagram of a cardiopulmonary resuscitation training device according to another embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] like Figures 1 to 5As shown, an embodiment of the present application provides a cardiopulmonary resuscitation training device 10, including a base 1, a pressing mechanism 2, and a pressing auxiliary mechanism 3, wherein the pressing mechanism 2 and the pressing auxiliary mechanism 3 are respectively fixedly connected to the top of the base 1.

[0026] The pressing mechanism 2 includes a pressing part 21, a guide rod 22, a conducting part 23, and a pressure cylinder 24. The bottom of the pressure cylinder 24 is fixedly connected to the base 1, an opening 241 is provided at the top of the pressure cylinder 24, and the conducting part 23 is slidably connected to the inner wall of the pressure cylinder 24. One end of the guide rod 22 is fixedly connected to the conducting part 23, and the other end passes through the opening 241 and extends to the outside of the pressure cylinder 24 and is fixedly connected to the pressing part 21.

[0027] During training, the pressing mechanism 2 is as follows Figure 2 As shown in (a), it is the initial state of training. After the trainee applies a pressing operation on the pressing part 21, Figure 2 As shown in (b), under the action of the pressing force (indicated by the downward arrow), the pressing part 21 and the guide rod 22 drive the conductive part 23 toward the bottom of the pressure cylinder 24, that is, toward the direction of compressing the gas within the pressure cylinder 24. As a result, the conductive part 23 is subjected to the reaction force of the gas pressure. As the compression depth increases, the gas pressure within the pressure cylinder 24 gradually increases. At the same time, the reaction force of the gas pressure on the conductive part 23 also increases accordingly, and is fed back to the trainee through the guide rod 22 and the pressing part 21, thus simulating the compression resistance (indicated by the upward arrow) that the trainee experiences when applying the compression operation. According to the compression operation process, the trainee presses to a certain position and releases the pressing part 21. The pressing force disappears. Due to the increased gas pressure within the pressure cylinder 24, the conductive part 23 is pushed toward the opening 241, and the guide rod 22 and the pressing part 21 are synchronously moved upward and returned to their initial state, thus simulating the rebound movement of chest compression.

[0028] Chest compression rebound is a very important indicator of cardiopulmonary resuscitation. Its core requirement is complete rebound, that is, after each compression, the rescuer must allow the chest to fully rebound to its natural position to ensure that the heart is adequately filled with blood. Insufficient rebound will affect the efficiency of the next compression cycle and may also cause secondary injuries. Therefore, in this embodiment, a compression auxiliary mechanism 3 is provided to prevent reverse movement during the rebound process, that is, to prevent the trainee from performing the next compression operation during the chest rebound movement. Specifically, Figures 3 to 5As shown, the pressing auxiliary mechanism 3 includes a bracket 31 fixed to the bottom 1, a first driving rod 32 fixed to the bottom of the pressing portion 21 and parallel to the guide rod 22, the bottom of the first driving rod 32 is rotatably connected to the second driving rod 33, the second driving rod 33 extends to the bracket 31, and is rotatably connected to the support shaft 34 fixedly connected to the bracket 31, one side of the second driving rod 33 is fixedly connected to the fixed plate 42 through the guide column 41, a movable plate 43 is provided between the second driving rod 33 and the fixed plate 42, and a return spring 44 is provided between the fixed plate 42 and the movable plate 43 and is sleeved on the outer wall of the guide column 41, and a limiting pin 45 is fixedly provided on the movable plate 43. 33 is provided with a through hole 331 for the limit pin 45 to extend out of the second driving rod 33, and the other side of the second driving rod 33 is provided with a one-way bearing 46 fixedly connected to the support shaft 34, and the outer periphery of the one-way bearing 46 is fixedly connected to a limit plate 47 with an annular limit groove 48, and the annular limit groove 48 is provided to be composed of a plurality of clamping grooves 50, which are used to cooperate with the limit pin 45 so that the limit pin 45 is clamped with the clamping groove 50 when it rotates to the corresponding clamping groove 50 position. A reset block 49 is also provided on the bracket 31 and is located above the support shaft 34. The front end of the reset block 49 is provided as a wedge block with a reset groove 491, which is used to clamp and lift the limit pin 45 and disengage it from the clamping groove 50.

[0029] The annular limiting groove 48 is set as the rotation path of the limiting pin 45, which is used to make the limiting pin 45 engage with the corresponding engaging groove 50 when the limiting pin 45 rotates to any position and is ejected by the return spring 44. At the same time, it ensures that the limiting pin 45 will not be ejected by the return spring 44 when it slides on the surface of the annular limiting groove 48 at a certain speed (which can be understood as the pressing speed). Figure 4 , which shows the structure of the annular limiting groove 48 in this embodiment, is configured with wavy inner walls on both sides and is composed of a plurality of interconnected engaging grooves 50. The narrowest width of the interconnected portion of the annular limiting groove 48 is smaller than the diameter of the limiting pin 45, ensuring that the limiting pin 45 engages with the engaging grooves 50. By adjusting the number and shape of the engaging grooves 50 in conjunction with the limiting pin 45, the density of the engaging positions of the limiting pin 45 and the limiting plate 47 can be adjusted.

[0030] In order to maintain the stability of the movement of the movable plate 43, in this embodiment, four guide posts 41 are provided between the fixed plate 42 and the second driving rod 33, and four return springs 44 are respectively provided. Figure 5 As shown in (m), in the initial state, the reset module 49 is located between the movable plate 43 and the second drive rod 33, and the limit pin 45 is stuck in the reset groove 491. At this time, the limit pin 45 remains extended from a small portion of the second drive rod 33 or does not extend from the second drive rod 33. The structure can be set as needed. When kept in the initial position, the limit pin 45 does not contact the limit plate 47. When separated from the reset module 49, as shown in FIG. Figure 5 As shown in (n), under the action of the reset spring 44, the movable plate 43 drives the limit pin 45 to move toward the second drive rod 33, so that the limit pin 45 extends out of the second drive rod 33 and engages with the annular limit groove 48 on the limit plate 47. Since the annular limit groove 48 is configured to be composed of a plurality of engaging grooves, the limit pin 45 can engage with the engaging groove at the corresponding position when it rotates to any position and is ejected by the reset spring 44. When resetting, the front end of the reset module 49 is configured as a wedge block to facilitate lifting the movable plate 43, thereby driving the limit pin 45 to return to the original position. Figure 5 As shown in (m).

[0031] In this embodiment, to facilitate the assembly and fixation of various structures, the support shaft 34 is configured to include a first support shaft 341 and a second support shaft 342 that are fixedly connected. The first support shaft 341 is clamped with the one-way bearing 46 to fix the one-way bearing 46. The second support shaft 342 is rotatably connected to the second drive rod 33, and a support shaft sleeve 343 is used for fixing to prevent the second drive rod 33 from moving along the axial direction on the second support shaft 342.

[0032] In this embodiment, the limiting plate 47 is configured to be fixed to the outer periphery of the one-way bearing 46, thereby maintaining the same movement as the one-way bearing 46 and rotating in one direction, and is used to provide reverse movement prevention during rebound movement. Figures 3 to 5 ,like Figure 6 As shown, Figure 6 (1) is the initial state of the pressing operation of the pressing auxiliary mechanism 3, Figure 6 (2) is the downward movement state of the pressing auxiliary mechanism 3 during the pressing operation. In this embodiment, the one-way bearing 46 is set to move in a clockwise one-way direction, so the limit plate 47 also moves in a clockwise one-way direction (such as Figure 6 (1) As shown by the arrow). When pressing down (refer to Figure 6(2) solid arrow), the first driving rod 32 moves downward, driving the second driving rod 33 to rotate counterclockwise around the support shaft 34, thereby driving the fixed plate 42, the movable plate 43, and the limit pin 45 fixed on the second driving rod 33 to rotate synchronously and disengage from the reset block 49. Since the pressing operation needs to maintain a certain speed (such as 100-120 times / minute for adults), the initial speed of the pressing operation is very fast. Under the action of inertia, the movable plate 43, the limit pin 45 and the fixed plate 42 still maintain the speed after disengaging from the reset block 49. In the initial state, the limiting pin 45 moves synchronously on the surface of the limiting plate 47 and will not be stuck in the annular limiting groove 48. When the student presses to a certain depth, the pressing force disappears and the first driving rod 22 stops moving downward. At this time, under the action of the return spring 44, the movable plate 43 is pushed on the guide column 41 from the end near the fixed plate 42 to the end near the second driving rod 33, thereby driving the limiting pin 45 to engage with the annular limiting groove 48 at the corresponding position on the limiting plate 47, thereby engaging the second driving rod 33 with the limiting plate 47. During the rebound movement (refer to Figure 6 (2) hollow arrow), that is, the first drive rod 32 moves upward, and at the same time drives the second drive rod 33 to rotate clockwise around the support shaft 34, and drives the movable plate 43, the limit pin 45, and the fixed plate 42 to move clockwise. When it rotates to the reset block 49, the limit pin 45 is stuck in the reset groove 491 and is lifted by the reset block 49, so that the limit pin 45 is disengaged from the annular limit groove 48 and restored to the initial state, that is, completes the complete rebound movement. During the rebound process, since the limit plate 47 is fixedly installed with the one-way bearing 46 and limits the limit plate 47 to only clockwise unidirectional rotation, the clockwise unidirectional rotation of the second drive rod 33 during the rebound process is limited. Therefore, in this embodiment, during the chest rebound process, before it returns to the initial state, that is, the complete chest rebound is completed, the second drive rod 33 cannot rotate counterclockwise, that is, during the rebound process, the trainee cannot perform the next pressing operation.

[0033] In other embodiments, the one-way bearing 46 can also be set to rotate in a counterclockwise direction. It is only necessary to adaptively adjust the reset block 49 and the first drive rod 32, the second drive rod 33 and other structures so that when moving downward, under the drive of the first drive rod 32, the second drive rod 33 drives the relevant structure to rotate clockwise around the support shaft 34, and when rebounding, it rotates counterclockwise. For example, refer to Figure 6 , the reset module 49, the first drive rod 32, the second drive rod 33 and other rotatable structures thereof can be adaptively adjusted to the right side.

[0034] Through the above embodiment, when the trainee performs a pressing operation, the pressing part 21 simultaneously drives the guide rod 22 and the first drive rod 32 to move downward, and the pressing mechanism 2 is provided with resistance during pressing by the closed pressure cylinder 24, and after the pressing is completed, the compressed gas in the pressure cylinder 24 provides rebound support, and the pressing auxiliary mechanism 3 provides a unidirectional movement restriction during the rebound process, preventing the trainee from performing the next pressing operation before completing the complete rebound, thereby helping the trainee master the single pressing operation and complete rebound, and then helping the trainee master the pressing frequency.

[0035] Because compression resistance is affected by physiological and pathological factors, resulting in significant individual differences, some embodiments also provide adjustable compression resistance, which can simulate compression resistance scenarios for patients of different body shapes, ages, and different pathologies according to different case needs, thereby improving the trainees' adaptability. Specifically, the pressure cylinder 24 is provided with at least one through-hole, which is configured as an air inlet and / or an air outlet. The air inlet is used to connect to an external gas storage device, which can infuse gas of different pressures into the pressure cylinder 24 through the through-hole. The gas in the pressure cylinder 24 can be released through the air outlet, thereby regulating the gas pressure and facilitating the adjustment of different pressure states.

[0036] At the same time, in order to facilitate the control of the filling and release of gas in the pressure cylinder 24, some embodiments further include at least one solenoid valve for controlling the opening or closing of the air inlet and the air outlet.

[0037] In order to facilitate real-time monitoring and adjustment of the gas pressure in the pressure cylinder 24, a pressure sensor may also be provided.

[0038] The pressure sensor can be arranged in the pressure cylinder 24, and can also be arranged in the gas pipeline between the gas storage device and the air inlet. At the same time, by monitoring the gas pressure change in the pressure cylinder 24 during the pressing process, the pressing depth can also be calculated.

[0039] In the above embodiment, in order to facilitate the installation of various structures inside the pressure cylinder 24 , the pressure cylinder 24 is configured to include a cylinder bottom 242 , a cylinder body 243 , and a cylinder cover 244 , wherein the opening 241 is provided on the cylinder cover 244 .

[0040] In order to ensure the airtightness of the structure and maintain the gas pressure in the pressure cylinder 24 stable, on the one hand, the structure of the pressure cylinder 24 itself ensures that the cylinder body 243 is tightly connected to the cylinder bottom 242 and the cylinder cover 244 respectively, and on the other hand, the guide rod 22 and the conductive part 23 are slidably connected to the opening 241 and the inner wall of the pressure cylinder 24 respectively. Therefore, in another embodiment of the present application, as Figure 7As shown, the pressure cylinder 24 comprises a cylinder base 242, a cylinder body 243, and a cylinder cover 244. An opening 241 is provided in the cylinder cover 244. The cylinder base 242 and cylinder cover 244 are detachably connected via four connecting posts 200. Each of the cylinder base 242 and cylinder cover 244 is provided with a groove for accommodating a sealing layer 201 disposed in contact with the cylinder body 243. A sealing layer 230 is provided between the conductive portion 23 and the inner wall of the cylinder body 243 to enhance the tightness of the conductive portion 23 when sliding against the inner wall of the pressure cylinder 24 and prevent the gas within the pressure cylinder 24 from escaping from the conductive portion 23 during compression. In this embodiment, the sealing layer 230 is made of a double-layer Gly Ring SPGO (tetrafluorocarbon fiber). Compared to conventional O-rings, this sealing layer provides a smooth sliding surface, reduces motion resistance, and is suitable for high-speed or frequent reciprocating motion. A bushing 205 is provided at the opening 241 to provide guidance and lubrication for the guide rod 22.

[0041] In this embodiment, a dust cover 206 is provided on the outside of the shaft sleeve 205 to remove dust, oil and the like on the surface of the guide rod 22 and protect the pressure cylinder 24 and its internal structures.

[0042] In this embodiment, buffer portions 202 are respectively provided at the bottom and top of the pressure cylinder 24 to buffer the force exerted by the conductive portion 23 on the bottom and top of the pressure cylinder 24 during reciprocating motion.

[0043] The base 1 can be set as a part of the human chest model, or can be set to be fixed inside the human chest model to provide a simulated human body model for cardiopulmonary resuscitation training, providing students with a simulated touch and environment, such as Figure 8 As shown, another embodiment of the present application provides a cardiopulmonary resuscitation training model 100, including a half-body human body model 101 with a chest cavity, a simulated epidermis 102 covering the chest cavity, a cardiopulmonary resuscitation training device 10 fixed in the chest cavity, and a simulated sternum 103 arranged under the simulated epidermis 102 and detachably connected to the cardiopulmonary resuscitation training device 10.

Claims

1. A cardiopulmonary resuscitation training device, characterized in that: It includes a base, a pressing mechanism, and a pressing auxiliary mechanism, wherein: The pressing mechanism includes a pressing portion, a guide rod, a pressure cylinder, and a conducting portion. The bottom of the pressure cylinder is fixedly connected to the base, the top of the pressure cylinder is provided with an opening, the conducting portion is slidably connected to the inner wall of the pressure cylinder, one end of the guide rod is fixedly connected to the conducting portion, and the other end extends through the opening to the outside of the pressure cylinder and is fixedly connected to the pressing portion. The cam is fixedly provided with a first end in contact with the bottom surface of the support shaft, and the cam is fixedly provided with a first driving rod and a second driving rod at the bottom surface of the support shaft, and the cam is connected with the second driving rod by the second engaging groove of the support shaft.

2. The cardiopulmonary resuscitation training device according to claim 1, characterized in that: The support shaft includes a first support shaft and a second support shaft that are fixedly connected. The first support shaft is clamped with the one-way bearing, and the second support shaft is rotatably connected to the second driving rod.

3. The cardiopulmonary resuscitation training device according to claim 2, characterized in that: A support sleeve is provided on the second support shaft to prevent the second driving rod from moving along the axial direction on the second support shaft.

4. The cardiopulmonary resuscitation training device according to claim 1, characterized in that: It also includes a shaft sleeve, which is arranged in the opening and provides guidance and lubrication for the guide rod.

5. The cardiopulmonary resuscitation training device according to claim 4, characterized in that: It also includes a dust cover, which is arranged on the outside of the shaft sleeve.

6. The cardiopulmonary resuscitation training device according to claim 1, characterized in that: It also includes a sealing layer, which is arranged between the outer periphery of the conducting part and the inner wall of the pressure cylinder.

7. The cardiopulmonary resuscitation training device according to claim 1, characterized in that: A pressure sensor is also included for monitoring the gas pressure in the pressure cylinder.

8. The cardiopulmonary resuscitation training device according to claim 1, characterized in that: It also includes a buffer part for buffering the force exerted on the bottom and top of the pressure cylinder when the conductive part moves back and forth.

9. The cardiopulmonary resuscitation training device according to claim 1, characterized in that: The pressure cylinder further includes at least one through hole for injecting or releasing gas in the pressure cylinder.

10. The cardiopulmonary resuscitation training device according to any one of claims 1 to 9, characterized in that: The pressure cylinder is configured to include a cylinder bottom, a cylinder body, and a cylinder cover. The cylinder bottom and the cylinder cover are detachably connected via a connecting column, and sealing layers are provided at the contact portions of the cylinder bottom and the cylinder cover with the cylinder body.

Images